diff --git a/kclvm/parser/src/parser/tests.rs b/kclvm/parser/src/parser/tests.rs
index e83a43cf2..f4f9e3c2c 100644
--- a/kclvm/parser/src/parser/tests.rs
+++ b/kclvm/parser/src/parser/tests.rs
@@ -10,895 +10,50 @@ use regex::Regex;
 use std::path::PathBuf;
 use std::sync::Arc;
 
-fn check_parsing_expr(src: &str, expect: Expect) {
-    let sm = SourceMap::new(FilePathMapping::empty());
-    let sf = sm.new_source_file(PathBuf::from("").into(), src.to_string());
-    let sess = &ParseSession::with_source_map(Arc::new(sm));
-
-    match sf.src.as_ref() {
-        Some(src_from_sf) => {
-            create_session_globals_then(|| {
-                let stream = parse_token_streams(sess, src_from_sf.as_str(), new_byte_pos(0));
-                let mut parser = Parser::new(sess, stream);
-                let expr = parser.parse_expr();
-                let actual = format!("{expr:?}\n");
-                expect.assert_eq(&actual)
-            });
-        }
-        None => todo!(),
-    };
-}
-
-fn check_parsing_file_ast_json(filename: &str, src: &str, expect: Expect) {
-    let m = crate::parse_file_with_global_session(
-        Arc::new(ParseSession::default()),
-        filename,
-        Some(src.into()),
-    )
-    .unwrap();
-    let actual = serde_json::ser::to_string(&m).unwrap();
-    let actual = format!("{actual}\n");
-    expect.assert_eq(&actual)
-}
-
-fn check_parsing_type(src: &str, expect: Expect) {
-    let sm = SourceMap::new(FilePathMapping::empty());
-    sm.new_source_file(PathBuf::from("").into(), src.to_string());
-    let sess = &ParseSession::with_source_map(Arc::new(sm));
-
-    create_session_globals_then(|| {
-        let stream = parse_token_streams(sess, src, new_byte_pos(0));
-        let mut parser = Parser::new(sess, stream);
-        let typ = parser.parse_type_annotation();
-        let actual = format!("{typ:?}\n");
-        expect.assert_eq(&actual)
-    });
-}
-
-fn check_type_str(src: &str, expect: Expect) {
-    let sm = SourceMap::new(FilePathMapping::empty());
-    sm.new_source_file(PathBuf::from("").into(), src.to_string());
-    let sess = &ParseSession::with_source_map(Arc::new(sm));
-
-    create_session_globals_then(|| {
-        let stream = parse_token_streams(sess, src, new_byte_pos(0));
-        let mut parser = Parser::new(sess, stream);
-        let typ = parser.parse_type_annotation();
-        let actual = typ.node.to_string();
-        expect.assert_eq(&actual)
-    });
-}
-
-fn check_parsing_module(filename: &str, src: &str, expect: &str) {
-    let m = crate::parse_file(filename, Some(src.to_string())).expect(filename);
-    let actual = format!("{}\n", serde_json::ser::to_string(&m).unwrap());
-    assert_eq!(actual.trim(), expect.trim());
-}
-
-#[test]
-fn smoke_test_parsing_expr() {
-    check_parsing_expr(
-        "1\n",
-        expect![[r#"
-        Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }
-        "#]],
-    );
-    check_parsing_expr(
-        "\"1\"\n",
-        expect![[r#"
-        Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"1\"", value: "1" }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }
-        "#]],
-    );
-}
-
-#[test]
-fn named_literal_expr() {
-    check_parsing_expr(
-        r####"Undefined"####,
-        expect![[r#"
-        Node { node: NameConstantLit(NameConstantLit { value: Undefined }), filename: "", line: 1, column: 0, end_line: 1, end_column: 9 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"None"####,
-        expect![[r#"
-        Node { node: NameConstantLit(NameConstantLit { value: None }), filename: "", line: 1, column: 0, end_line: 1, end_column: 4 }
-        "#]],
-    );
-    (
-        r####"True"####,
-        expect![[r#"
-        Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 1, column: 1, end_line: 1, end_column: 1 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"False"####,
-        expect![[r#"
-        Node { node: NameConstantLit(NameConstantLit { value: False }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn nonstring_literal_expr() {
-    check_parsing_expr(
-        r####"1234"####,
-        expect![[r#"
-        Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1234) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 4 }
-        "#]],
-    )
-}
-
-#[test]
-fn string_literal_expr_0() {
-    check_parsing_expr(
-        r####"'1234'"####,
-        expect![[r#"
-        Node { node: StringLit(StringLit { is_long_string: false, raw_value: "'1234'", value: "1234" }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    )
-}
-
-#[test]
-fn string_literal_expr_1() {
-    check_parsing_expr(
-        r####""1234""####,
-        expect![[r#"
-        Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"1234\"", value: "1234" }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    )
-}
-
-#[test]
-fn string_literal_expr_2() {
-    check_parsing_expr(
-        r####""1234\n""####,
-        expect![[r#"
-        Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"1234\\n\"", value: "1234\n" }), filename: "", line: 1, column: 0, end_line: 1, end_column: 8 }
-        "#]],
-    )
-}
-
-#[test]
-fn number_bin_suffix_expr() {
-    check_parsing_expr(
-        r####"1234Ki"####,
-        expect![[r#"
-        Node { node: NumberLit(NumberLit { binary_suffix: Some(Ki), value: Int(1234) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    )
-}
-
-#[test]
-fn unary_expr() {
-    check_parsing_expr(
-        r####"+1"####,
-        expect![[r#"
-        Node { node: Unary(UnaryExpr { op: UAdd, operand: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 2 }
-        "#]],
-    );
-}
-
-#[test]
-fn binary_expr_0() {
-    check_parsing_expr(
-        r####"1+2+3"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn binary_expr_1() {
-    check_parsing_expr(
-        r####"1+2*3-4"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, op: Bin(Add), right: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }, op: Bin(Mul), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 2, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }, op: Bin(Sub), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(4) }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn binary_expr_2() {
-    check_parsing_expr(
-        r####"1+2*3/4"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, op: Bin(Add), right: Node { node: Binary(BinaryExpr { left: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }, op: Bin(Mul), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 2, end_line: 1, end_column: 5 }, op: Bin(Div), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(4) }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 2, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn binary_expr_3() {
-    check_parsing_expr(
-        r####"a or b"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, op: Bin(Or), right: Node { node: Identifier(Identifier { names: [Node { node: "b", filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-    "#]],
-    );
-}
-
-#[test]
-fn binary_expr_4() {
-    check_parsing_expr(
-        r####"x == a or b"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, ops: [Eq], comparators: [Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 11 }, op: Bin(Or), right: Node { node: Identifier(Identifier { names: [Node { node: "b", filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 10, end_line: 1, end_column: 11 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 11 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"22 > 11 and 111 < 222"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Compare(Compare { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(22) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 2 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(11) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 7 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 21 }, op: Bin(And), right: Node { node: Compare(Compare { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(111) }), filename: "", line: 1, column: 12, end_line: 1, end_column: 15 }, ops: [Lt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(222) }), filename: "", line: 1, column: 18, end_line: 1, end_column: 21 }] }), filename: "", line: 1, column: 12, end_line: 1, end_column: 21 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 21 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"int(e.value) > 1 and i == 0"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Compare(Compare { left: Node { node: Call(CallExpr { func: Node { node: Identifier(Identifier { names: [Node { node: "int", filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }, args: [Node { node: Identifier(Identifier { names: [Node { node: "e", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, Node { node: "value", filename: "", line: 1, column: 6, end_line: 1, end_column: 11 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 11 }], keywords: [] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 12 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 15, end_line: 1, end_column: 16 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 27 }, op: Bin(And), right: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "i", filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }, ops: [Eq], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 26, end_line: 1, end_column: 27 }] }), filename: "", line: 1, column: 21, end_line: 1, end_column: 27 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 27 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"key in ['key']"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "key", filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }, ops: [In], comparators: [Node { node: List(ListExpr { elts: [Node { node: StringLit(StringLit { is_long_string: false, raw_value: "'key'", value: "key" }), filename: "", line: 1, column: 8, end_line: 1, end_column: 13 }], ctx: Load }), filename: "", line: 1, column: 7, end_line: 1, end_column: 14 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 14 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"key not in ['key']"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "key", filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }, ops: [NotIn], comparators: [Node { node: List(ListExpr { elts: [Node { node: StringLit(StringLit { is_long_string: false, raw_value: "'key'", value: "key" }), filename: "", line: 1, column: 12, end_line: 1, end_column: 17 }], ctx: Load }), filename: "", line: 1, column: 11, end_line: 1, end_column: 18 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 18 }
-        "#]],
-    );
-
-    check_parsing_expr(
-        r####"1 is 1 and 11 is not 22"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Compare(Compare { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, ops: [Is], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 23 }, op: Bin(And), right: Node { node: Compare(Compare { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(11) }), filename: "", line: 1, column: 11, end_line: 1, end_column: 13 }, ops: [IsNot], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(22) }), filename: "", line: 1, column: 21, end_line: 1, end_column: 23 }] }), filename: "", line: 1, column: 11, end_line: 1, end_column: 23 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 23 }
-        "#]],
-    );
-}
-
-#[test]
-fn binary_expr_5() {
-    check_parsing_expr(
-        r####"1 + a and b"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, op: Bin(Add), right: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }, op: Bin(And), right: Node { node: Identifier(Identifier { names: [Node { node: "b", filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 10, end_line: 1, end_column: 11 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 11 }
-        "#]],
-    );
-}
-
-#[test]
-fn binary_expr_with_paren() {
-    check_parsing_expr(
-        r####"1*(2+3)-4"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, op: Bin(Mul), right: Node { node: Paren(ParenExpr { expr: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 3, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 2, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }, op: Bin(Sub), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(4) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 9 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 9 }
-        "#]],
-    );
-}
-
-#[test]
-fn logic_expr_0() {
-    check_parsing_expr(
-        r####"0 < a < 100"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, ops: [Lt, Lt], comparators: [Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(100) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 11 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 11 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"0 < a < 100 + a"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, ops: [Lt, Lt], comparators: [Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(100) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 11 }, op: Bin(Add), right: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 14, end_line: 1, end_column: 15 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 14, end_line: 1, end_column: 15 } }), filename: "", line: 1, column: 8, end_line: 1, end_column: 15 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 15 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"100 > a > 0"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(100) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }, ops: [Gt, Gt], comparators: [Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 11 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"100 + a > a > 0"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(100) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }, op: Bin(Add), right: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }, ops: [Gt, Gt], comparators: [Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 14, end_line: 1, end_column: 15 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 15 }
-        "#]],
-    );
-}
-
-#[test]
-fn logic_expr_1() {
-    check_parsing_expr(
-        r####"a is b"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, ops: [Is], comparators: [Node { node: Identifier(Identifier { names: [Node { node: "b", filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"a is not True"####,
-        expect![[r#"
-        Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, ops: [IsNot], comparators: [Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 1, column: 9, end_line: 1, end_column: 13 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 13 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"not False or a > 0 and b is True"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: Unary(UnaryExpr { op: Not, operand: Node { node: NameConstantLit(NameConstantLit { value: False }), filename: "", line: 1, column: 4, end_line: 1, end_column: 9 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 9 }, op: Bin(Or), right: Node { node: Binary(BinaryExpr { left: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 13, end_line: 1, end_column: 14 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 13, end_line: 1, end_column: 14 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 17, end_line: 1, end_column: 18 }] }), filename: "", line: 1, column: 13, end_line: 1, end_column: 32 }, op: Bin(And), right: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "b", filename: "", line: 1, column: 23, end_line: 1, end_column: 24 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 23, end_line: 1, end_column: 24 }, ops: [Is], comparators: [Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 1, column: 28, end_line: 1, end_column: 32 }] }), filename: "", line: 1, column: 23, end_line: 1, end_column: 32 } }), filename: "", line: 1, column: 13, end_line: 1, end_column: 32 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 32 }
-        "#]],
-    );
-}
-
-#[test]
-fn if_expr() {
-    check_parsing_expr(
-        r####"1 if true else 2"####,
-        expect![[r#"
-        Node { node: If(IfExpr { body: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, cond: Node { node: Identifier(Identifier { names: [Node { node: "true", filename: "", line: 1, column: 5, end_line: 1, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 5, end_line: 1, end_column: 9 }, orelse: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 15, end_line: 1, end_column: 16 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 16 }
-        "#]],
-    );
-}
-
-#[test]
-fn primary_expr_0() {
-    check_parsing_expr(
-        r####"a.b.c"####,
-        expect![[r#"
-        Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, Node { node: "b", filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }, Node { node: "c", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn primary_expr_1() {
-    check_parsing_expr(
-        r####"'{}'.format(1)"####,
-        expect![[r#"
-        Node { node: Call(CallExpr { func: Node { node: Selector(SelectorExpr { value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "'{}'", value: "{}" }), filename: "", line: 1, column: 0, end_line: 1, end_column: 4 }, attr: Node { node: Identifier { names: [Node { node: "format", filename: "", line: 1, column: 5, end_line: 1, end_column: 11 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 5, end_line: 1, end_column: 11 }, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 11 }, args: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 12, end_line: 1, end_column: 13 }], keywords: [] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 14 }
-        "#]],
-    );
-}
-
-#[test]
-fn primary_expr_2() {
-    check_parsing_expr(
-        r####"str(1).isdigit()"####,
-        expect![[r#"
-        Node { node: Call(CallExpr { func: Node { node: Selector(SelectorExpr { value: Node { node: Call(CallExpr { func: Node { node: Identifier(Identifier { names: [Node { node: "str", filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 3 }, args: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], keywords: [] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }, attr: Node { node: Identifier { names: [Node { node: "isdigit", filename: "", line: 1, column: 7, end_line: 1, end_column: 14 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 14 }, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 14 }, args: [], keywords: [] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 16 }
-        "#]],
-    );
-}
-
-#[test]
-fn list_expr() {
-    check_parsing_expr(
-        r####"[1, 2, 3]"####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 9 }
-        "#]],
-    );
-
-    check_parsing_expr(
-        r####"[1, if True: 2, 3]"####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, Node { node: ListIfItem(ListIfItemExpr { if_cond: Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 1, column: 7, end_line: 1, end_column: 11 }, exprs: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 13, end_line: 1, end_column: 14 }], orelse: None }), filename: "", line: 1, column: 4, end_line: 1, end_column: 14 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 16, end_line: 1, end_column: 17 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 18 }
-        "#]],
-    );
-}
-
-#[test]
-fn list_comp_expr_0() {
-    check_parsing_expr(
-        r####"[x ** 2 for x in [1, 2, 3]]"####,
-        expect![[r#"
-        Node { node: ListComp(ListComp { elt: Node { node: Binary(BinaryExpr { left: Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, op: Bin(Pow), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 1, end_line: 1, end_column: 7 }, generators: [Node { node: CompClause { targets: [Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 12, end_line: 1, end_column: 13 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 12, end_line: 1, end_column: 13 }], iter: Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 18, end_line: 1, end_column: 19 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 24, end_line: 1, end_column: 25 }], ctx: Load }), filename: "", line: 1, column: 17, end_line: 1, end_column: 26 }, ifs: [] }, filename: "", line: 1, column: 8, end_line: 1, end_column: 26 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 27 }
-        "#]],
-    );
-}
-
-#[test]
-fn list_comp_expr_1() {
-    check_parsing_expr(
-        r####"[i for i in [1, 2, 3] if i > 2]"####,
-        expect![[r#"
-        Node { node: ListComp(ListComp { elt: Node { node: Identifier(Identifier { names: [Node { node: "i", filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, generators: [Node { node: CompClause { targets: [Node { node: Identifier { names: [Node { node: "i", filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], iter: Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 13, end_line: 1, end_column: 14 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 16, end_line: 1, end_column: 17 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 19, end_line: 1, end_column: 20 }], ctx: Load }), filename: "", line: 1, column: 12, end_line: 1, end_column: 21 }, ifs: [Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "i", filename: "", line: 1, column: 25, end_line: 1, end_column: 26 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 25, end_line: 1, end_column: 26 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 29, end_line: 1, end_column: 30 }] }), filename: "", line: 1, column: 25, end_line: 1, end_column: 30 }] }, filename: "", line: 1, column: 3, end_line: 1, end_column: 30 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 31 }
-        "#]],
-    );
-}
-
-#[test]
-fn dict_expr() {
-    check_parsing_expr(
-        r####"{k0=v0, k1=v1}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k0", filename: "", line: 1, column: 1, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 3 }), value: Node { node: Identifier(Identifier { names: [Node { node: "v0", filename: "", line: 1, column: 4, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 6 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 1, end_line: 1, end_column: 6 }, Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k1", filename: "", line: 1, column: 8, end_line: 1, end_column: 10 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 8, end_line: 1, end_column: 10 }), value: Node { node: Identifier(Identifier { names: [Node { node: "v1", filename: "", line: 1, column: 11, end_line: 1, end_column: 13 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 11, end_line: 1, end_column: 13 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 8, end_line: 1, end_column: 13 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 14 }
-        "#]],
-    );
-}
-
-#[test]
-fn dict_comp_expr() {
-    check_parsing_expr(
-        r####"{k: v + 1 for k, v in {k1 = 1, k2 = 2}}"####,
-        expect![[r#"
-        Node { node: DictComp(DictComp { entry: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k", filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }), value: Node { node: Binary(BinaryExpr { left: Node { node: Identifier(Identifier { names: [Node { node: "v", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 9 } }), filename: "", line: 1, column: 4, end_line: 1, end_column: 9 }, operation: Union, insert_index: -1 }, generators: [Node { node: CompClause { targets: [Node { node: Identifier { names: [Node { node: "k", filename: "", line: 1, column: 14, end_line: 1, end_column: 15 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 14, end_line: 1, end_column: 15 }, Node { node: Identifier { names: [Node { node: "v", filename: "", line: 1, column: 17, end_line: 1, end_column: 18 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 17, end_line: 1, end_column: 18 }], iter: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k1", filename: "", line: 1, column: 23, end_line: 1, end_column: 25 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 23, end_line: 1, end_column: 25 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 28, end_line: 1, end_column: 29 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 23, end_line: 1, end_column: 29 }, Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k2", filename: "", line: 1, column: 31, end_line: 1, end_column: 33 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 31, end_line: 1, end_column: 33 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 36, end_line: 1, end_column: 37 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 31, end_line: 1, end_column: 37 }] }), filename: "", line: 1, column: 22, end_line: 1, end_column: 38 }, ifs: [] }, filename: "", line: 1, column: 10, end_line: 1, end_column: 38 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 39 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_0() {
-    check_parsing_expr(
-        r####"a[0]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), lower: None, upper: None, step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 4 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_1() {
-    check_parsing_expr(
-        r####"b["k"]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "b", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"k\"", value: "k" }), filename: "", line: 1, column: 2, end_line: 1, end_column: 5 }), lower: None, upper: None, step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_2() {
-    check_parsing_expr(
-        r####"c?[1]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "c", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }), lower: None, upper: None, step: None, ctx: Load, has_question: true }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_3() {
-    check_parsing_expr(
-        r####"a[1:]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), upper: None, step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_4() {
-    check_parsing_expr(
-        r####"a[:-1]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: None, upper: Some(Node { node: Unary(UnaryExpr { op: USub, operand: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 3, end_line: 1, end_column: 5 }), step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_5() {
-    check_parsing_expr(
-        r####"a[1:len]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), upper: Some(Node { node: Identifier(Identifier { names: [Node { node: "len", filename: "", line: 1, column: 4, end_line: 1, end_column: 7 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 7 }), step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 8 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_6() {
-    check_parsing_expr(
-        r####"a[0:-1]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), upper: Some(Node { node: Unary(UnaryExpr { op: USub, operand: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 4, end_line: 1, end_column: 6 }), step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_7() {
-    check_parsing_expr(
-        r####"a[::]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: None, upper: None, step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_8() {
-    check_parsing_expr(
-        r####"a[1::]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), upper: None, step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_9() {
-    check_parsing_expr(
-        r####"a[:0:]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: None, upper: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }), step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_10() {
-    check_parsing_expr(
-        r####"a[::-1]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: None, upper: None, step: Some(Node { node: Unary(UnaryExpr { op: USub, operand: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 4, end_line: 1, end_column: 6 }), ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_11() {
-    check_parsing_expr(
-        r####"a[1::2]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), upper: None, step: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }), ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_12() {
-    check_parsing_expr(
-        r####"a[:2:1]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: None, upper: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }), step: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }), ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_13() {
-    check_parsing_expr(
-        r####"a[1:2:]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), upper: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }), step: None, ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn subscript_expr_14() {
-    check_parsing_expr(
-        r####"a[1:3:1]"####,
-        expect![[r#"
-        Node { node: Subscript(Subscript { value: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, index: None, lower: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), upper: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }), step: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }), ctx: Load, has_question: false }), filename: "", line: 1, column: 0, end_line: 1, end_column: 8 }
-        "#]],
-    );
-}
-
-#[test]
-fn call_expr_0() {
-    check_parsing_expr(
-        r####"func0()"####,
-        expect![[r#"
-        Node { node: Call(CallExpr { func: Node { node: Identifier(Identifier { names: [Node { node: "func0", filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }, args: [], keywords: [] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn call_expr_1() {
-    check_parsing_expr(
-        r####"func1(1)"####,
-        expect![[r#"
-        Node { node: Call(CallExpr { func: Node { node: Identifier(Identifier { names: [Node { node: "func1", filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }, args: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }], keywords: [] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 8 }
-        "#]],
-    );
-}
-
-#[test]
-fn call_expr_2() {
-    check_parsing_expr(
-        r####"func2(x=2)"####,
-        expect![[r#"
-        Node { node: Call(CallExpr { func: Node { node: Identifier(Identifier { names: [Node { node: "func2", filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }, args: [], keywords: [Node { node: Keyword { arg: Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }, value: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 9 }) }, filename: "", line: 1, column: 6, end_line: 1, end_column: 9 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 10 }
-        "#]],
-    );
-}
-
-#[test]
-fn call_expr_3() {
-    check_parsing_expr(
-        r####"func3(1,x=2)"####,
-        expect![[r#"
-        Node { node: Call(CallExpr { func: Node { node: Identifier(Identifier { names: [Node { node: "func3", filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }, args: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }], keywords: [Node { node: Keyword { arg: Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 8, end_line: 1, end_column: 9 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 8, end_line: 1, end_column: 9 }, value: Some(Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }) }, filename: "", line: 1, column: 8, end_line: 1, end_column: 11 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 12 }
-        "#]],
-    );
-}
-
-#[test]
-fn quant_expr_0() {
-    check_parsing_expr(
-        r####"all x in collection {x > 0}"####,
-        expect![[r#"
-        Node { node: Quant(QuantExpr { target: Node { node: Identifier(Identifier { names: [Node { node: "collection", filename: "", line: 1, column: 9, end_line: 1, end_column: 19 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 9, end_line: 1, end_column: 19 }, variables: [Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], op: All, test: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 25, end_line: 1, end_column: 26 }] }), filename: "", line: 1, column: 21, end_line: 1, end_column: 26 }, if_cond: None, ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 27 }
-        "#]],
-    );
-}
-
-#[test]
-fn quant_expr_1() {
-    check_parsing_expr(
-        r####"any y in collection {y < 0}"####,
-        expect![[r#"
-        Node { node: Quant(QuantExpr { target: Node { node: Identifier(Identifier { names: [Node { node: "collection", filename: "", line: 1, column: 9, end_line: 1, end_column: 19 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 9, end_line: 1, end_column: 19 }, variables: [Node { node: Identifier { names: [Node { node: "y", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], op: Any, test: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "y", filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }, ops: [Lt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 25, end_line: 1, end_column: 26 }] }), filename: "", line: 1, column: 21, end_line: 1, end_column: 26 }, if_cond: None, ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 27 }
-        "#]],
-    );
-}
-
-#[test]
-fn quant_expr_2() {
-    check_parsing_expr(
-        r####"map x in collection {x + 1}"####,
-        expect![[r#"
-        Node { node: Quant(QuantExpr { target: Node { node: Identifier(Identifier { names: [Node { node: "collection", filename: "", line: 1, column: 9, end_line: 1, end_column: 19 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 9, end_line: 1, end_column: 19 }, variables: [Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], op: Map, test: Node { node: Binary(BinaryExpr { left: Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 21, end_line: 1, end_column: 22 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 25, end_line: 1, end_column: 26 } }), filename: "", line: 1, column: 21, end_line: 1, end_column: 26 }, if_cond: None, ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 27 }
-        "#]],
-    );
-}
-
-#[test]
-fn quant_expr_3() {
-    check_parsing_expr(
-        r####"filter x in collection {x > 1}"####,
-        expect![[r#"
-        Node { node: Quant(QuantExpr { target: Node { node: Identifier(Identifier { names: [Node { node: "collection", filename: "", line: 1, column: 12, end_line: 1, end_column: 22 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 12, end_line: 1, end_column: 22 }, variables: [Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], op: Filter, test: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 1, column: 24, end_line: 1, end_column: 25 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 24, end_line: 1, end_column: 25 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 28, end_line: 1, end_column: 29 }] }), filename: "", line: 1, column: 24, end_line: 1, end_column: 29 }, if_cond: None, ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 30 }
-        "#]],
-    );
-}
-
-#[test]
-fn quant_expr_4() {
-    check_parsing_expr(
-        r####"filter x in collection {x > 1}"####,
-        expect![[r#"
-        Node { node: Quant(QuantExpr { target: Node { node: Identifier(Identifier { names: [Node { node: "collection", filename: "", line: 1, column: 12, end_line: 1, end_column: 22 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 12, end_line: 1, end_column: 22 }, variables: [Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], op: Filter, test: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 1, column: 24, end_line: 1, end_column: 25 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 24, end_line: 1, end_column: 25 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 28, end_line: 1, end_column: 29 }] }), filename: "", line: 1, column: 24, end_line: 1, end_column: 29 }, if_cond: None, ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 30 }
-        "#]],
-    );
-}
-
-#[test]
-fn quant_expr_5() {
-    check_parsing_expr(
-        r####"map i, e in [{k1 = "v1", k2 = "v2"}] { e }"####,
-        expect![[r#"
-        Node { node: Quant(QuantExpr { target: Node { node: List(ListExpr { elts: [Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k1", filename: "", line: 1, column: 14, end_line: 1, end_column: 16 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 14, end_line: 1, end_column: 16 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"v1\"", value: "v1" }), filename: "", line: 1, column: 19, end_line: 1, end_column: 23 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 14, end_line: 1, end_column: 23 }, Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k2", filename: "", line: 1, column: 25, end_line: 1, end_column: 27 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 25, end_line: 1, end_column: 27 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"v2\"", value: "v2" }), filename: "", line: 1, column: 30, end_line: 1, end_column: 34 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 25, end_line: 1, end_column: 34 }] }), filename: "", line: 1, column: 13, end_line: 1, end_column: 35 }], ctx: Load }), filename: "", line: 1, column: 12, end_line: 1, end_column: 36 }, variables: [Node { node: Identifier { names: [Node { node: "i", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, Node { node: Identifier { names: [Node { node: "e", filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], op: Map, test: Node { node: Identifier(Identifier { names: [Node { node: "e", filename: "", line: 1, column: 39, end_line: 1, end_column: 40 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 39, end_line: 1, end_column: 40 }, if_cond: None, ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 42 }
-        "#]],
-    );
-}
-
-#[test]
-fn quant_expr_6() {
-    check_parsing_expr(
-        r####"map i, e in [{k1 = "v1", k2 = "v2"}] { e if i > 0 }"####,
-        expect![[r#"
-        Node { node: Quant(QuantExpr { target: Node { node: List(ListExpr { elts: [Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k1", filename: "", line: 1, column: 14, end_line: 1, end_column: 16 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 14, end_line: 1, end_column: 16 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"v1\"", value: "v1" }), filename: "", line: 1, column: 19, end_line: 1, end_column: 23 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 14, end_line: 1, end_column: 23 }, Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k2", filename: "", line: 1, column: 25, end_line: 1, end_column: 27 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 25, end_line: 1, end_column: 27 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"v2\"", value: "v2" }), filename: "", line: 1, column: 30, end_line: 1, end_column: 34 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 25, end_line: 1, end_column: 34 }] }), filename: "", line: 1, column: 13, end_line: 1, end_column: 35 }], ctx: Load }), filename: "", line: 1, column: 12, end_line: 1, end_column: 36 }, variables: [Node { node: Identifier { names: [Node { node: "i", filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, Node { node: Identifier { names: [Node { node: "e", filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], op: Map, test: Node { node: Identifier(Identifier { names: [Node { node: "e", filename: "", line: 1, column: 39, end_line: 1, end_column: 40 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 39, end_line: 1, end_column: 40 }, if_cond: Some(Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "i", filename: "", line: 1, column: 44, end_line: 1, end_column: 45 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 44, end_line: 1, end_column: 45 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(0) }), filename: "", line: 1, column: 48, end_line: 1, end_column: 49 }] }), filename: "", line: 1, column: 44, end_line: 1, end_column: 49 }), ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 51 }
-        "#]],
-    );
-}
-
-#[test]
-fn lambda_expr_0() {
-    check_parsing_expr(
-        r####"lambda {}"####,
-        expect![[r#"
-        Node { node: Lambda(LambdaExpr { args: None, return_type_str: None, body: [], return_ty: None }), filename: "", line: 1, column: 0, end_line: 1, end_column: 9 }
-        "#]],
-    );
-}
-
-#[test]
-fn lambda_expr_1() {
-    check_parsing_expr(
-        r####"lambda x {}"####,
-        expect![[r#"
-        Node { node: Lambda(LambdaExpr { args: Some(Node { node: Arguments { args: [Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], defaults: [None], type_annotation_list: [None], ty_list: [None] }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }), return_type_str: None, body: [], return_ty: None }), filename: "", line: 1, column: 0, end_line: 1, end_column: 11 }
-        "#]],
-    );
-}
-
-#[test]
-fn lambda_expr_2() {
-    check_parsing_expr(
-        r####"lambda x: int -> int {x}"####,
-        expect![[r#"
-        Node { node: Lambda(LambdaExpr { args: Some(Node { node: Arguments { args: [Node { node: Identifier { names: [Node { node: "x", filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 7, end_line: 1, end_column: 8 }], defaults: [None], type_annotation_list: [Some(Node { node: "int", filename: "", line: 1, column: 10, end_line: 1, end_column: 13 })], ty_list: [Some(Node { node: Basic(Int), filename: "", line: 1, column: 10, end_line: 1, end_column: 13 })] }, filename: "", line: 1, column: 7, end_line: 1, end_column: 13 }), return_type_str: Some("int"), body: [Node { node: Expr(ExprStmt { exprs: [Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 1, column: 22, end_line: 1, end_column: 23 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 22, end_line: 1, end_column: 23 }] }), filename: "", line: 1, column: 22, end_line: 1, end_column: 23 }], return_ty: Some(Node { node: Basic(Int), filename: "", line: 1, column: 17, end_line: 1, end_column: 20 }) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 24 }
-        "#]],
-    );
-}
-
-#[test]
-fn lambda_expr_3() {
-    check_parsing_expr(
-        r####"lambda {
-    if True:
-        _a = 1
-    else:
-        _a = 2
-    _a
-}"####,
-        expect![[r#"
-        Node { node: Lambda(LambdaExpr { args: None, return_type_str: None, body: [Node { node: If(IfStmt { body: [Node { node: Assign(AssignStmt { targets: [Node { node: Identifier { names: [Node { node: "_a", filename: "", line: 3, column: 8, end_line: 3, end_column: 10 }], pkgpath: "", ctx: Store }, filename: "", line: 3, column: 8, end_line: 3, end_column: 10 }], value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 3, column: 13, end_line: 3, end_column: 14 }, type_annotation: None, ty: None }), filename: "", line: 3, column: 8, end_line: 3, end_column: 14 }], cond: Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 2, column: 7, end_line: 2, end_column: 11 }, orelse: [Node { node: Assign(AssignStmt { targets: [Node { node: Identifier { names: [Node { node: "_a", filename: "", line: 5, column: 8, end_line: 5, end_column: 10 }], pkgpath: "", ctx: Store }, filename: "", line: 5, column: 8, end_line: 5, end_column: 10 }], value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 5, column: 13, end_line: 5, end_column: 14 }, type_annotation: None, ty: None }), filename: "", line: 5, column: 8, end_line: 5, end_column: 14 }] }), filename: "", line: 2, column: 4, end_line: 6, end_column: 4 }, Node { node: Expr(ExprStmt { exprs: [Node { node: Identifier(Identifier { names: [Node { node: "_a", filename: "", line: 6, column: 4, end_line: 6, end_column: 6 }], pkgpath: "", ctx: Load }), filename: "", line: 6, column: 4, end_line: 6, end_column: 6 }] }), filename: "", line: 6, column: 4, end_line: 6, end_column: 6 }], return_ty: None }), filename: "", line: 1, column: 0, end_line: 7, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn config_expr_0() {
-    check_parsing_expr(
-        r####"{
-    "name" = {
-        "name": "alice"
-    },
-    "gender" = "female"
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"name\"", value: "name" }), filename: "", line: 2, column: 4, end_line: 2, end_column: 10 }), value: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"name\"", value: "name" }), filename: "", line: 3, column: 8, end_line: 3, end_column: 14 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"alice\"", value: "alice" }), filename: "", line: 3, column: 16, end_line: 3, end_column: 23 }, operation: Union, insert_index: -1 }, filename: "", line: 3, column: 8, end_line: 3, end_column: 23 }] }), filename: "", line: 2, column: 13, end_line: 4, end_column: 5 }, operation: Override, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 4, end_column: 5 }, Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"gender\"", value: "gender" }), filename: "", line: 5, column: 4, end_line: 5, end_column: 12 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"female\"", value: "female" }), filename: "", line: 5, column: 15, end_line: 5, end_column: 23 }, operation: Override, insert_index: -1 }, filename: "", line: 5, column: 4, end_line: 5, end_column: 23 }] }), filename: "", line: 1, column: 0, end_line: 6, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn config_expr_1() {
-    check_parsing_expr(
-        r####"{
-    "name" = {
-        "name": "alice"
-    }
-    "gender" = "female",
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"name\"", value: "name" }), filename: "", line: 2, column: 4, end_line: 2, end_column: 10 }), value: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"name\"", value: "name" }), filename: "", line: 3, column: 8, end_line: 3, end_column: 14 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"alice\"", value: "alice" }), filename: "", line: 3, column: 16, end_line: 3, end_column: 23 }, operation: Union, insert_index: -1 }, filename: "", line: 3, column: 8, end_line: 3, end_column: 23 }] }), filename: "", line: 2, column: 13, end_line: 4, end_column: 5 }, operation: Override, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 4, end_column: 5 }, Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"gender\"", value: "gender" }), filename: "", line: 5, column: 4, end_line: 5, end_column: 12 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"female\"", value: "female" }), filename: "", line: 5, column: 15, end_line: 5, end_column: 23 }, operation: Override, insert_index: -1 }, filename: "", line: 5, column: 4, end_line: 5, end_column: 23 }] }), filename: "", line: 1, column: 0, end_line: 6, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn config_expr_2() {
-    check_parsing_expr(
-        r####"{
-    "name" = {
-        "name": "alice",
-    }
-    "gender" = "female"
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"name\"", value: "name" }), filename: "", line: 2, column: 4, end_line: 2, end_column: 10 }), value: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"name\"", value: "name" }), filename: "", line: 3, column: 8, end_line: 3, end_column: 14 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"alice\"", value: "alice" }), filename: "", line: 3, column: 16, end_line: 3, end_column: 23 }, operation: Union, insert_index: -1 }, filename: "", line: 3, column: 8, end_line: 3, end_column: 23 }] }), filename: "", line: 2, column: 13, end_line: 4, end_column: 5 }, operation: Override, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 4, end_column: 5 }, Node { node: ConfigEntry { key: Some(Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"gender\"", value: "gender" }), filename: "", line: 5, column: 4, end_line: 5, end_column: 12 }), value: Node { node: StringLit(StringLit { is_long_string: false, raw_value: "\"female\"", value: "female" }), filename: "", line: 5, column: 15, end_line: 5, end_column: 23 }, operation: Override, insert_index: -1 }, filename: "", line: 5, column: 4, end_line: 5, end_column: 23 }] }), filename: "", line: 1, column: 0, end_line: 6, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn config_if_expr_0() {
-    check_parsing_expr(
-        r####"{
-    if True:
-        a = 1
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: None, value: Node { node: ConfigIfEntry(ConfigIfEntryExpr { if_cond: Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 2, column: 7, end_line: 2, end_column: 11 }, items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 3, column: 8, end_line: 3, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 3, column: 8, end_line: 3, end_column: 9 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 3, column: 12, end_line: 3, end_column: 13 }, operation: Override, insert_index: -1 }, filename: "", line: 3, column: 8, end_line: 3, end_column: 13 }], orelse: None }), filename: "", line: 2, column: 4, end_line: 4, end_column: 0 }, operation: Union, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 4, end_column: 0 }] }), filename: "", line: 1, column: 0, end_line: 4, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn config_if_expr_1() {
-    check_parsing_expr(
-        r####"{
-    if True:
-        a = 1
-    else:
-        a = 2
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: None, value: Node { node: ConfigIfEntry(ConfigIfEntryExpr { if_cond: Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 2, column: 7, end_line: 2, end_column: 11 }, items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 3, column: 8, end_line: 3, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 3, column: 8, end_line: 3, end_column: 9 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 3, column: 12, end_line: 3, end_column: 13 }, operation: Override, insert_index: -1 }, filename: "", line: 3, column: 8, end_line: 3, end_column: 13 }], orelse: Some(Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 5, column: 8, end_line: 5, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 5, column: 8, end_line: 5, end_column: 9 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 5, column: 12, end_line: 5, end_column: 13 }, operation: Override, insert_index: -1 }, filename: "", line: 5, column: 8, end_line: 5, end_column: 13 }] }), filename: "", line: 4, column: 4, end_line: 6, end_column: 0 }) }), filename: "", line: 2, column: 4, end_line: 6, end_column: 0 }, operation: Union, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 6, end_column: 0 }] }), filename: "", line: 1, column: 0, end_line: 6, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn config_if_expr_2() {
-    check_parsing_expr(
-        r####"{
-    if True:
-        a = 1
-    elif x > 1:
-        a = 2
-    else:
-        a = 3
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: None, value: Node { node: ConfigIfEntry(ConfigIfEntryExpr { if_cond: Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 2, column: 7, end_line: 2, end_column: 11 }, items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 3, column: 8, end_line: 3, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 3, column: 8, end_line: 3, end_column: 9 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 3, column: 12, end_line: 3, end_column: 13 }, operation: Override, insert_index: -1 }, filename: "", line: 3, column: 8, end_line: 3, end_column: 13 }], orelse: Some(Node { node: ConfigIfEntry(ConfigIfEntryExpr { if_cond: Node { node: Compare(Compare { left: Node { node: Identifier(Identifier { names: [Node { node: "x", filename: "", line: 4, column: 9, end_line: 4, end_column: 10 }], pkgpath: "", ctx: Load }), filename: "", line: 4, column: 9, end_line: 4, end_column: 10 }, ops: [Gt], comparators: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 4, column: 13, end_line: 4, end_column: 14 }] }), filename: "", line: 4, column: 9, end_line: 4, end_column: 14 }, items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 5, column: 8, end_line: 5, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 5, column: 8, end_line: 5, end_column: 9 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 5, column: 12, end_line: 5, end_column: 13 }, operation: Override, insert_index: -1 }, filename: "", line: 5, column: 8, end_line: 5, end_column: 13 }], orelse: Some(Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 7, column: 8, end_line: 7, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 7, column: 8, end_line: 7, end_column: 9 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 7, column: 12, end_line: 7, end_column: 13 }, operation: Override, insert_index: -1 }, filename: "", line: 7, column: 8, end_line: 7, end_column: 13 }] }), filename: "", line: 6, column: 4, end_line: 8, end_column: 0 }) }), filename: "", line: 4, column: 4, end_line: 6, end_column: 4 }) }), filename: "", line: 2, column: 4, end_line: 8, end_column: 0 }, operation: Union, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 8, end_column: 0 }] }), filename: "", line: 1, column: 0, end_line: 8, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn config_if_expr_3() {
-    check_parsing_expr(
-        r####"{
-    if True:
-        if False:
-            a = 1
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: None, value: Node { node: ConfigIfEntry(ConfigIfEntryExpr { if_cond: Node { node: NameConstantLit(NameConstantLit { value: True }), filename: "", line: 2, column: 7, end_line: 2, end_column: 11 }, items: [Node { node: ConfigEntry { key: None, value: Node { node: ConfigIfEntry(ConfigIfEntryExpr { if_cond: Node { node: NameConstantLit(NameConstantLit { value: False }), filename: "", line: 3, column: 11, end_line: 3, end_column: 16 }, items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 4, column: 12, end_line: 4, end_column: 13 }], pkgpath: "", ctx: Load }), filename: "", line: 4, column: 12, end_line: 4, end_column: 13 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 4, column: 16, end_line: 4, end_column: 17 }, operation: Override, insert_index: -1 }, filename: "", line: 4, column: 12, end_line: 4, end_column: 17 }], orelse: None }), filename: "", line: 3, column: 8, end_line: 5, end_column: 0 }, operation: Override, insert_index: -1 }, filename: "", line: 3, column: 8, end_line: 5, end_column: 0 }], orelse: None }), filename: "", line: 2, column: 4, end_line: 5, end_column: 0 }, operation: Union, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 5, end_column: 0 }] }), filename: "", line: 1, column: 0, end_line: 5, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn schema_expr_0() {
-    check_parsing_expr(
-        r####"Schema {}"####,
-        expect![[r#"
-        Node { node: Schema(SchemaExpr { name: Node { node: Identifier { names: [Node { node: "Schema", filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }, args: [], kwargs: [], config: Node { node: Config(ConfigExpr { items: [] }), filename: "", line: 1, column: 7, end_line: 1, end_column: 9 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 9 }
-        "#]],
-    );
+fn check_parsing_file_ast_json(filename: &str, src: &str, expect: Expect) {
+    let m = crate::parse_file_with_global_session(
+        Arc::new(ParseSession::default()),
+        filename,
+        Some(src.into()),
+    )
+    .unwrap();
+    let actual = serde_json::ser::to_string(&m).unwrap();
+    let actual = format!("{actual}\n");
+    expect.assert_eq(&actual)
 }
 
-#[test]
-fn schema_expr_1() {
-    check_parsing_expr(
-        r####"Schema {k=v}"####,
-        expect![[r#"
-        Node { node: Schema(SchemaExpr { name: Node { node: Identifier { names: [Node { node: "Schema", filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }, args: [], kwargs: [], config: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k", filename: "", line: 1, column: 8, end_line: 1, end_column: 9 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 8, end_line: 1, end_column: 9 }), value: Node { node: Identifier(Identifier { names: [Node { node: "v", filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 10, end_line: 1, end_column: 11 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 8, end_line: 1, end_column: 11 }] }), filename: "", line: 1, column: 7, end_line: 1, end_column: 12 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 12 }
-        "#]],
-    );
-}
+fn check_parsing_type(src: &str, expect: Expect) {
+    let sm = SourceMap::new(FilePathMapping::empty());
+    sm.new_source_file(PathBuf::from("").into(), src.to_string());
+    let sess = &ParseSession::with_source_map(Arc::new(sm));
 
-#[test]
-fn schema_expr_2() {
-    check_parsing_expr(
-        r####"Schema () {k=v}"####,
-        expect![[r#"
-        Node { node: Schema(SchemaExpr { name: Node { node: Identifier { names: [Node { node: "Schema", filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }, args: [], kwargs: [], config: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k", filename: "", line: 1, column: 11, end_line: 1, end_column: 12 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 11, end_line: 1, end_column: 12 }), value: Node { node: Identifier(Identifier { names: [Node { node: "v", filename: "", line: 1, column: 13, end_line: 1, end_column: 14 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 13, end_line: 1, end_column: 14 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 11, end_line: 1, end_column: 14 }] }), filename: "", line: 1, column: 10, end_line: 1, end_column: 15 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 15 }
-        "#]],
-    );
+    create_session_globals_then(|| {
+        let stream = parse_token_streams(sess, src, new_byte_pos(0));
+        let mut parser = Parser::new(sess, stream);
+        let typ = parser.parse_type_annotation();
+        let actual = format!("{typ:?}\n");
+        expect.assert_eq(&actual)
+    });
 }
 
-#[test]
-fn schema_expr_3() {
-    check_parsing_expr(
-        r####"Schema (1, 2) {k=v}"####,
-        expect![[r#"
-        Node { node: Schema(SchemaExpr { name: Node { node: Identifier { names: [Node { node: "Schema", filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }, args: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 9 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 11, end_line: 1, end_column: 12 }], kwargs: [], config: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k", filename: "", line: 1, column: 15, end_line: 1, end_column: 16 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 15, end_line: 1, end_column: 16 }), value: Node { node: Identifier(Identifier { names: [Node { node: "v", filename: "", line: 1, column: 17, end_line: 1, end_column: 18 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 17, end_line: 1, end_column: 18 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 15, end_line: 1, end_column: 18 }] }), filename: "", line: 1, column: 14, end_line: 1, end_column: 19 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 19 }
-        "#]],
-    );
-}
+fn check_type_str(src: &str, expect: Expect) {
+    let sm = SourceMap::new(FilePathMapping::empty());
+    sm.new_source_file(PathBuf::from("").into(), src.to_string());
+    let sess = &ParseSession::with_source_map(Arc::new(sm));
 
-#[test]
-fn schema_expr_4() {
-    check_parsing_expr(
-        r####"Schema (1, 2) {
-    k=v
-}"####,
-        expect![[r#"
-        Node { node: Schema(SchemaExpr { name: Node { node: Identifier { names: [Node { node: "Schema", filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }], pkgpath: "", ctx: Load }, filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }, args: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 9 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 11, end_line: 1, end_column: 12 }], kwargs: [], config: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "k", filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }), value: Node { node: Identifier(Identifier { names: [Node { node: "v", filename: "", line: 2, column: 6, end_line: 2, end_column: 7 }], pkgpath: "", ctx: Load }), filename: "", line: 2, column: 6, end_line: 2, end_column: 7 }, operation: Override, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 2, end_column: 7 }] }), filename: "", line: 1, column: 14, end_line: 3, end_column: 1 } }), filename: "", line: 1, column: 0, end_line: 3, end_column: 1 }
-        "#]],
-    );
+    create_session_globals_then(|| {
+        let stream = parse_token_streams(sess, src, new_byte_pos(0));
+        let mut parser = Parser::new(sess, stream);
+        let typ = parser.parse_type_annotation();
+        let actual = typ.node.to_string();
+        expect.assert_eq(&actual)
+    });
 }
 
-#[test]
-fn line_continue() {
-    check_parsing_expr(
-        r####"1 + \
-2
-"####,
-        expect![[r#"
-        Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 2, column: 0, end_line: 2, end_column: 1 } }), filename: "", line: 1, column: 0, end_line: 2, end_column: 1 }
-        "#]],
-    );
+fn check_parsing_module(filename: &str, src: &str, expect: &str) {
+    let m = crate::parse_file(filename, Some(src.to_string())).expect(filename);
+    let actual = format!("{}\n", serde_json::ser::to_string(&m).unwrap());
+    assert_eq!(actual.trim(), expect.trim());
 }
 
 #[test]
@@ -1131,22 +286,6 @@ schema TestBool:
     );
 }
 
-#[test]
-fn test_parse_joined_string() {
-    check_parsing_expr(
-        r####"'${123+200}'"####,
-        expect![[r#"
-        Node { node: JoinedString(JoinedString { is_long_string: false, values: [Node { node: FormattedValue(FormattedValue { is_long_string: false, value: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(123) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 6 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(200) }), filename: "", line: 1, column: 7, end_line: 1, end_column: 10 } }), filename: "", line: 1, column: 3, end_line: 1, end_column: 10 }, format_spec: None }), filename: "", line: 1, column: 3, end_line: 1, end_column: 10 }], raw_value: "'${123+200}'" }), filename: "", line: 1, column: 0, end_line: 1, end_column: 12 }
-        "#]],
-    );
-    check_parsing_expr(
-        r####"'abc${a+1}cde'"####,
-        expect![[r#"
-        Node { node: JoinedString(JoinedString { is_long_string: false, values: [Node { node: StringLit(StringLit { is_long_string: false, raw_value: "abc", value: "abc" }), filename: "", line: 1, column: 1, end_line: 1, end_column: 1 }, Node { node: FormattedValue(FormattedValue { is_long_string: false, value: Node { node: Binary(BinaryExpr { left: Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 6, end_line: 1, end_column: 7 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 1, column: 8, end_line: 1, end_column: 9 } }), filename: "", line: 1, column: 6, end_line: 1, end_column: 9 }, format_spec: None }), filename: "", line: 1, column: 6, end_line: 1, end_column: 9 }, Node { node: StringLit(StringLit { is_long_string: false, raw_value: "cde", value: "cde" }), filename: "", line: 1, column: 1, end_line: 1, end_column: 1 }], raw_value: "'abc${a+1}cde'" }), filename: "", line: 1, column: 0, end_line: 1, end_column: 14 }
-        "#]],
-    );
-}
-
 #[test]
 fn test_parse_assign_stmt() {
     check_parsing_file_ast_json(
@@ -1236,230 +375,6 @@ fn test_parse_file() {
     }
 }
 
-#[test]
-fn expr_with_paren1() {
-    check_parsing_expr(
-        r####"(2+3)"####,
-        expect![[r#"
-        Node { node: Paren(ParenExpr { expr: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 } }), filename: "", line: 1, column: 1, end_line: 1, end_column: 4 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_paren2() {
-    check_parsing_expr(
-        r####"((2+3)"####,
-        expect![[r#"
-        Node { node: Paren(ParenExpr { expr: Node { node: Paren(ParenExpr { expr: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 2, end_line: 1, end_column: 5 } }), filename: "", line: 1, column: 1, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_paren3() {
-    check_parsing_expr(
-        r####"(2+3))"####,
-        expect![[r#"
-        Node { node: Paren(ParenExpr { expr: Node { node: Binary(BinaryExpr { left: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, op: Bin(Add), right: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 } }), filename: "", line: 1, column: 1, end_line: 1, end_column: 4 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket1() {
-    check_parsing_expr(
-        r####"[2,3]"####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket2() {
-    check_parsing_expr(
-        r####"[[2,3]"####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 6 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket3() {
-    check_parsing_expr(
-        r####"[2,3]]"####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket4() {
-    check_parsing_expr(
-        r####"[2,3"####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(3) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 4 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket5() {
-    check_parsing_expr(
-        r####"["####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket6() {
-    check_parsing_expr(
-        r####"[
-    1
-    2,
-]
-        "####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 3, column: 4, end_line: 3, end_column: 5 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 4, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket7() {
-    check_parsing_expr(
-        r####"[
-    1,2,
-]
-        "####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 2, column: 6, end_line: 2, end_column: 7 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 3, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_bracket8() {
-    check_parsing_expr(
-        r####"[
-    1,2,
-
-        "####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }, Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 2, column: 6, end_line: 2, end_column: 7 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 4, end_column: 8 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_brace1() {
-    check_parsing_expr(
-        r####"{a=2}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 1, end_line: 1, end_column: 4 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_brace2() {
-    check_parsing_expr(
-        r####"{a=2}}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 3, end_line: 1, end_column: 4 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 1, end_line: 1, end_column: 4 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 5 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim1() {
-    check_parsing_expr(
-        r####"({a=2}"####,
-        expect![[r#"
-        Node { node: Paren(ParenExpr { expr: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 2, end_line: 1, end_column: 5 }] }), filename: "", line: 1, column: 1, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim2() {
-    check_parsing_expr(
-        r####"({a=(2}"####,
-        expect![[r#"
-        Node { node: Paren(ParenExpr { expr: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), value: Node { node: Paren(ParenExpr { expr: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 } }), filename: "", line: 1, column: 4, end_line: 1, end_column: 7 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 2, end_line: 1, end_column: 7 }] }), filename: "", line: 1, column: 1, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim3() {
-    check_parsing_expr(
-        r####"{a=[2]"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 1, end_line: 1, end_column: 2 }), value: Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }], ctx: Load }), filename: "", line: 1, column: 3, end_line: 1, end_column: 6 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 1, end_line: 1, end_column: 6 }] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim4() {
-    check_parsing_expr(
-        r####"[{a=2}"####,
-        expect![[r#"
-        Node { node: List(ListExpr { elts: [Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 4, end_line: 1, end_column: 5 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 2, end_line: 1, end_column: 5 }] }), filename: "", line: 1, column: 1, end_line: 1, end_column: 6 }], ctx: Load }), filename: "", line: 1, column: 0, end_line: 1, end_column: 6 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim5() {
-    check_parsing_expr(
-        r####"({a=[2}"####,
-        expect![[r#"
-        Node { node: Paren(ParenExpr { expr: Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }], pkgpath: "", ctx: Load }), filename: "", line: 1, column: 2, end_line: 1, end_column: 3 }), value: Node { node: List(ListExpr { elts: [Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(2) }), filename: "", line: 1, column: 5, end_line: 1, end_column: 6 }], ctx: Load }), filename: "", line: 1, column: 4, end_line: 1, end_column: 7 }, operation: Override, insert_index: -1 }, filename: "", line: 1, column: 2, end_line: 1, end_column: 7 }] }), filename: "", line: 1, column: 1, end_line: 1, end_column: 7 } }), filename: "", line: 1, column: 0, end_line: 1, end_column: 7 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim6() {
-    check_parsing_expr(
-        r####"{"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [] }), filename: "", line: 1, column: 0, end_line: 1, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim7() {
-    check_parsing_expr(
-        r####"{
-    a = 1
-}"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 2, column: 8, end_line: 2, end_column: 9 }, operation: Override, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 2, end_column: 9 }] }), filename: "", line: 1, column: 0, end_line: 3, end_column: 1 }
-        "#]],
-    );
-}
-
-#[test]
-fn expr_with_delim8() {
-    check_parsing_expr(
-        r####"{
-    a = 1
-"####,
-        expect![[r#"
-        Node { node: Config(ConfigExpr { items: [Node { node: ConfigEntry { key: Some(Node { node: Identifier(Identifier { names: [Node { node: "a", filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }], pkgpath: "", ctx: Load }), filename: "", line: 2, column: 4, end_line: 2, end_column: 5 }), value: Node { node: NumberLit(NumberLit { binary_suffix: None, value: Int(1) }), filename: "", line: 2, column: 8, end_line: 2, end_column: 9 }, operation: Override, insert_index: -1 }, filename: "", line: 2, column: 4, end_line: 2, end_column: 9 }] }), filename: "", line: 1, column: 0, end_line: 2, end_column: 10 }
-        "#]],
-    );
-}
-
 #[test]
 fn test_parse_file_not_found() {
     match parse_file("The file path is invalid", None) {
diff --git a/kclvm/parser/src/tests.rs b/kclvm/parser/src/tests.rs
index 82ccf65f7..09b31b1cd 100644
--- a/kclvm/parser/src/tests.rs
+++ b/kclvm/parser/src/tests.rs
@@ -11,6 +11,7 @@ use crate::*;
 use core::any::Any;
 
 mod error_recovery;
+mod expr;
 
 #[macro_export]
 macro_rules! parse_expr_snapshot {
diff --git a/kclvm/parser/src/tests/expr.rs b/kclvm/parser/src/tests/expr.rs
new file mode 100644
index 000000000..d7b491e5c
--- /dev/null
+++ b/kclvm/parser/src/tests/expr.rs
@@ -0,0 +1,221 @@
+use crate::tests::parse_expr_snapshot;
+
+parse_expr_snapshot!(smoke_test_parsing_expr_0, "1\n");
+parse_expr_snapshot!(smoke_test_parsing_expr_1, "\"1\"\n");
+parse_expr_snapshot!(named_literal_expr_0, "Undefined");
+parse_expr_snapshot!(named_literal_expr_1, "None");
+parse_expr_snapshot!(named_literal_expr_2, "True");
+parse_expr_snapshot!(named_literal_expr_3, "False");
+parse_expr_snapshot!(nonstring_literal_expr, r####"1234"####);
+parse_expr_snapshot!(string_literal_expr_0, r####"'1234'"####);
+parse_expr_snapshot!(string_literal_expr_1, r####""1234""####);
+parse_expr_snapshot!(string_literal_expr_2, r####""1234\n""####);
+parse_expr_snapshot!(number_bin_suffix_expr, r####"1234Ki"####);
+parse_expr_snapshot!(unary_expr, r####"+1"####);
+parse_expr_snapshot!(binary_expr_0, r####"1+2+3"####);
+parse_expr_snapshot!(binary_expr_1, r####"1+2*3-4"####);
+parse_expr_snapshot!(binary_expr_2, r####"1+2*3/4"####);
+parse_expr_snapshot!(binary_expr_3, r####"a or b"####);
+parse_expr_snapshot!(binary_expr_4, r####"x == a or b"####);
+parse_expr_snapshot!(binary_expr_5, r####"22 > 11 and 111 < 222"####);
+parse_expr_snapshot!(binary_expr_6, r####"int(e.value) > 1 and i == 0"####);
+parse_expr_snapshot!(binary_expr_7, r####"key in ['key']"####);
+parse_expr_snapshot!(binary_expr_8, r####"key not in ['key']"####);
+parse_expr_snapshot!(binary_expr_9, r####"1 is 1 and 11 is not 22"####);
+parse_expr_snapshot!(binary_expr_10, r####"1 + a and b"####);
+parse_expr_snapshot!(binary_expr_with_paren, r####"1*(2+3)-4"####);
+parse_expr_snapshot!(logic_expr_0, r####"0 < a < 100"####);
+parse_expr_snapshot!(logic_expr_1, r####"0 < a < 100 + a"####);
+parse_expr_snapshot!(logic_expr_2, r####"100 > a > 0"####);
+parse_expr_snapshot!(logic_expr_3, r####"100 + a > a > 0"####);
+parse_expr_snapshot!(logic_expr_4, r####"a is b"####);
+parse_expr_snapshot!(logic_expr_5, r####"a is not True"####);
+parse_expr_snapshot!(logic_expr_6, r####"not False or a > 0 and b is True"####);
+parse_expr_snapshot!(if_expr, r####"1 if true else 2"####);
+parse_expr_snapshot!(primary_expr_0, r####"a.b.c"####);
+parse_expr_snapshot!(primary_expr_1, r####"'{}'.format(1)"####);
+parse_expr_snapshot!(primary_expr_2, r####"str(1).isdigit()"####);
+parse_expr_snapshot!(list_expr_0, r####"[1, 2, 3]"####);
+parse_expr_snapshot!(list_expr_1, r####"[1, if True: 2, 3]"####);
+parse_expr_snapshot!(list_comp_expr_0, r####"[x ** 2 for x in [1, 2, 3]]"####);
+parse_expr_snapshot!(list_comp_expr_1, r####"[i for i in [1, 2, 3] if i > 2]"####);
+parse_expr_snapshot!(dict_expr, r####"{k0=v0, k1=v1}"####);
+parse_expr_snapshot!(
+    dict_comp_expr,
+    r####"{k: v + 1 for k, v in {k1 = 1, k2 = 2}}"####
+);
+parse_expr_snapshot!(subscript_expr_0, r####"a[0]"####);
+parse_expr_snapshot!(subscript_expr_1, r####"b["k"]"####);
+parse_expr_snapshot!(subscript_expr_2, r####"c?[1]"####);
+parse_expr_snapshot!(subscript_expr_3, r####"a[1:]"####);
+parse_expr_snapshot!(subscript_expr_4, r####"a[:-1]"####);
+parse_expr_snapshot!(subscript_expr_5, r####"a[1:len]"####);
+parse_expr_snapshot!(subscript_expr_6, r####"a[0:-1]"####);
+parse_expr_snapshot!(subscript_expr_7, r####"a[::]"####);
+parse_expr_snapshot!(subscript_expr_8, r####"a[1::]"####);
+parse_expr_snapshot!(subscript_expr_9, r####"a[:0:]"####);
+parse_expr_snapshot!(subscript_expr_10, r####"a[::-1]"####);
+parse_expr_snapshot!(subscript_expr_11, r####"a[1::2]"####);
+parse_expr_snapshot!(subscript_expr_12, r####"a[:2:1]"####);
+parse_expr_snapshot!(subscript_expr_13, r####"a[1:2:]"####);
+parse_expr_snapshot!(subscript_expr_14, r####"a[1:3:1]"####);
+parse_expr_snapshot!(call_expr_0, r####"func0()"####);
+parse_expr_snapshot!(call_expr_1, r####"func1(1)"####);
+parse_expr_snapshot!(call_expr_2, r####"func2(x=2)"####);
+parse_expr_snapshot!(call_expr_3, r####"func3(1,x=2)"####);
+parse_expr_snapshot!(quant_expr_0, r####"all x in collection {x > 0}"####);
+parse_expr_snapshot!(quant_expr_1, r####"any y in collection {y < 0}"####);
+parse_expr_snapshot!(quant_expr_2, r####"map x in collection {x + 1}"####);
+parse_expr_snapshot!(quant_expr_3, r####"filter x in collection {x > 1}"####);
+parse_expr_snapshot!(quant_expr_4, r####"filter x in collection {x > 1}"####);
+parse_expr_snapshot!(
+    quant_expr_5,
+    r####"map i, e in [{k1 = "v1", k2 = "v2"}] { e }"####
+);
+parse_expr_snapshot!(
+    quant_expr_6,
+    r####"map i, e in [{k1 = "v1", k2 = "v2"}] { e if i > 0 }"####
+);
+parse_expr_snapshot!(lambda_expr_0, r####"lambda {}"####);
+parse_expr_snapshot!(lambda_expr_1, r####"lambda x {}"####);
+parse_expr_snapshot!(lambda_expr_2, r####"lambda x: int -> int {x}"####);
+parse_expr_snapshot!(
+    lambda_expr_3,
+    r####"lambda {
+    if True:
+        _a = 1
+    else:
+        _a = 2
+    _a
+}"####
+);
+parse_expr_snapshot!(
+    config_expr_0,
+    r####"{
+    "name" = {
+        "name": "alice"
+    },
+    "gender" = "female"
+}"####
+);
+parse_expr_snapshot!(
+    config_expr_1,
+    r####"{
+    "name" = {
+        "name": "alice"
+    }
+    "gender" = "female",
+}"####
+);
+parse_expr_snapshot!(
+    config_expr_2,
+    r####"{
+    "name" = {
+        "name": "alice",
+    }
+    "gender" = "female"
+}"####
+);
+parse_expr_snapshot!(
+    config_if_expr_0,
+    r####"{
+    if True:
+        a = 1
+}"####
+);
+parse_expr_snapshot!(
+    config_if_expr_1,
+    r####"{
+    if True:
+        a = 1
+    else:
+        a = 2
+}"####
+);
+parse_expr_snapshot!(
+    config_if_expr_2,
+    r####"{
+    if True:
+        a = 1
+    elif x > 1:
+        a = 2
+    else:
+        a = 3
+}"####
+);
+parse_expr_snapshot!(
+    config_if_expr_3,
+    r####"{
+    if True:
+        if False:
+            a = 1
+}"####
+);
+parse_expr_snapshot!(schema_expr_0, r####"Schema {}"####);
+parse_expr_snapshot!(schema_expr_1, r####"Schema {k=v}"####);
+parse_expr_snapshot!(schema_expr_2, r####"Schema () {k=v}"####);
+parse_expr_snapshot!(schema_expr_3, r####"Schema (1, 2) {k=v}"####);
+parse_expr_snapshot!(
+    schema_expr_4,
+    r####"Schema (1, 2) {
+    k=v
+}"####
+);
+parse_expr_snapshot!(
+    line_continue,
+    r####"1 + \
+2
+"####
+);
+parse_expr_snapshot!(parse_joined_string_0, r####"'${123+200}'"####);
+parse_expr_snapshot!(parse_joined_string_1, r####"'abc${a+1}cde'"####);
+parse_expr_snapshot!(expr_with_paren_0, r####"(2+3)"####);
+parse_expr_snapshot!(expr_with_paren_1, r####"((2+3)"####);
+parse_expr_snapshot!(expr_with_paren_2, r####"(2+3))"####);
+parse_expr_snapshot!(expr_with_bracket_0, r####"[2,3]"####);
+parse_expr_snapshot!(expr_with_bracket_1, r####"[[2,3]"####);
+parse_expr_snapshot!(expr_with_bracket_2, r####"[2,3]]"####);
+parse_expr_snapshot!(expr_with_bracket_3, r####"[2,3"####);
+parse_expr_snapshot!(expr_with_bracket_4, r####"["####);
+parse_expr_snapshot!(
+    expr_with_bracket_5,
+    r####"[
+    1
+    2,
+]
+        "####
+);
+parse_expr_snapshot!(
+    expr_with_bracket_6,
+    r####"[
+    1,2,
+]
+        "####
+);
+parse_expr_snapshot!(
+    expr_with_bracket_7,
+    r####"[
+    1,2,
+
+        "####
+);
+parse_expr_snapshot!(expr_with_brace_0, r####"{a=2}"####);
+parse_expr_snapshot!(expr_with_brace_1, r####"{a=2}}"####);
+parse_expr_snapshot!(expr_with_delim_0, r####"({a=2}"####);
+parse_expr_snapshot!(expr_with_delim_1, r####"({a=(2}"####);
+parse_expr_snapshot!(expr_with_delim_2, r####"{a=[2]"####);
+parse_expr_snapshot!(expr_with_delim_3, r####"[{a=2}"####);
+parse_expr_snapshot!(expr_with_delim_4, r####"({a=[2}"####);
+parse_expr_snapshot!(expr_with_delim_5, r####"{"####);
+parse_expr_snapshot!(
+    expr_with_delim_6,
+    r####"{
+    a = 1
+}"####
+);
+parse_expr_snapshot!(
+    expr_with_delim_7,
+    r####"{
+    a = 1
+"####
+);
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_0.snap
new file mode 100644
index 000000000..ff497d920
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_0.snap
@@ -0,0 +1,78 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1+2+3\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 1,
+                        },
+                        op: Bin(
+                            Add,
+                        ),
+                        right: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        2,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 2,
+                            end_line: 1,
+                            end_column: 3,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 3,
+            },
+            op: Bin(
+                Add,
+            ),
+            right: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            3,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 4,
+                end_line: 1,
+                end_column: 5,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_1.snap
new file mode 100644
index 000000000..d5ea0857a
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_1.snap
@@ -0,0 +1,107 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1+2*3-4\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 1,
+                        },
+                        op: Bin(
+                            Add,
+                        ),
+                        right: Node {
+                            node: Binary(
+                                BinaryExpr {
+                                    left: Node {
+                                        node: NumberLit(
+                                            NumberLit {
+                                                binary_suffix: None,
+                                                value: Int(
+                                                    2,
+                                                ),
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 2,
+                                        end_line: 1,
+                                        end_column: 3,
+                                    },
+                                    op: Bin(
+                                        Mul,
+                                    ),
+                                    right: Node {
+                                        node: NumberLit(
+                                            NumberLit {
+                                                binary_suffix: None,
+                                                value: Int(
+                                                    3,
+                                                ),
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 4,
+                                        end_line: 1,
+                                        end_column: 5,
+                                    },
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 2,
+                            end_line: 1,
+                            end_column: 5,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 5,
+            },
+            op: Bin(
+                Sub,
+            ),
+            right: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            4,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 6,
+                end_line: 1,
+                end_column: 7,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_10.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_10.snap
new file mode 100644
index 000000000..880406eae
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_10.snap
@@ -0,0 +1,94 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1 + a and b\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 1,
+                        },
+                        op: Bin(
+                            Add,
+                        ),
+                        right: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "a",
+                                            filename: "",
+                                            line: 1,
+                                            column: 4,
+                                            end_line: 1,
+                                            end_column: 5,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 4,
+                            end_line: 1,
+                            end_column: 5,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 5,
+            },
+            op: Bin(
+                And,
+            ),
+            right: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "b",
+                                filename: "",
+                                line: 1,
+                                column: 10,
+                                end_line: 1,
+                                end_column: 11,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 10,
+                end_line: 1,
+                end_column: 11,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 11,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_2.snap
new file mode 100644
index 000000000..bf66dd48a
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_2.snap
@@ -0,0 +1,107 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1+2*3/4\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            1,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            op: Bin(
+                Add,
+            ),
+            right: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: Binary(
+                                BinaryExpr {
+                                    left: Node {
+                                        node: NumberLit(
+                                            NumberLit {
+                                                binary_suffix: None,
+                                                value: Int(
+                                                    2,
+                                                ),
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 2,
+                                        end_line: 1,
+                                        end_column: 3,
+                                    },
+                                    op: Bin(
+                                        Mul,
+                                    ),
+                                    right: Node {
+                                        node: NumberLit(
+                                            NumberLit {
+                                                binary_suffix: None,
+                                                value: Int(
+                                                    3,
+                                                ),
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 4,
+                                        end_line: 1,
+                                        end_column: 5,
+                                    },
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 2,
+                            end_line: 1,
+                            end_column: 5,
+                        },
+                        op: Bin(
+                            Div,
+                        ),
+                        right: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        4,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 6,
+                            end_line: 1,
+                            end_column: 7,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 2,
+                end_line: 1,
+                end_column: 7,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_3.snap
new file mode 100644
index 000000000..2b7e42805
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_3.snap
@@ -0,0 +1,65 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a or b\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            op: Bin(
+                Or,
+            ),
+            right: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "b",
+                                filename: "",
+                                line: 1,
+                                column: 5,
+                                end_line: 1,
+                                end_column: 6,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 5,
+                end_line: 1,
+                end_column: 6,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_4.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_4.snap
new file mode 100644
index 000000000..f95bc13af
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_4.snap
@@ -0,0 +1,104 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"x == a or b\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 0,
+                                            end_line: 1,
+                                            end_column: 1,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 1,
+                        },
+                        ops: [
+                            Eq,
+                        ],
+                        comparators: [
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "a",
+                                                filename: "",
+                                                line: 1,
+                                                column: 5,
+                                                end_line: 1,
+                                                end_column: 6,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 5,
+                                end_line: 1,
+                                end_column: 6,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 11,
+            },
+            op: Bin(
+                Or,
+            ),
+            right: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "b",
+                                filename: "",
+                                line: 1,
+                                column: 10,
+                                end_line: 1,
+                                end_column: 11,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 10,
+                end_line: 1,
+                end_column: 11,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 11,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_5.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_5.snap
new file mode 100644
index 000000000..19b27602b
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_5.snap
@@ -0,0 +1,111 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"22 > 11 and 111 < 222\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        22,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 2,
+                        },
+                        ops: [
+                            Gt,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            11,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 5,
+                                end_line: 1,
+                                end_column: 7,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 21,
+            },
+            op: Bin(
+                And,
+            ),
+            right: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        111,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 12,
+                            end_line: 1,
+                            end_column: 15,
+                        },
+                        ops: [
+                            Lt,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            222,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 18,
+                                end_line: 1,
+                                end_column: 21,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 12,
+                end_line: 1,
+                end_column: 21,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 21,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_6.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_6.snap
new file mode 100644
index 000000000..55952d50b
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_6.snap
@@ -0,0 +1,172 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"int(e.value) > 1 and i == 0\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: Call(
+                                CallExpr {
+                                    func: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "int",
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 0,
+                                                        end_line: 1,
+                                                        end_column: 3,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 0,
+                                        end_line: 1,
+                                        end_column: 3,
+                                    },
+                                    args: [
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "e",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 4,
+                                                            end_line: 1,
+                                                            end_column: 5,
+                                                        },
+                                                        Node {
+                                                            node: "value",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 6,
+                                                            end_line: 1,
+                                                            end_column: 11,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 4,
+                                            end_line: 1,
+                                            end_column: 11,
+                                        },
+                                    ],
+                                    keywords: [],
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 12,
+                        },
+                        ops: [
+                            Gt,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 15,
+                                end_line: 1,
+                                end_column: 16,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 27,
+            },
+            op: Bin(
+                And,
+            ),
+            right: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "i",
+                                            filename: "",
+                                            line: 1,
+                                            column: 21,
+                                            end_line: 1,
+                                            end_column: 22,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 21,
+                            end_line: 1,
+                            end_column: 22,
+                        },
+                        ops: [
+                            Eq,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            0,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 26,
+                                end_line: 1,
+                                end_column: 27,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 21,
+                end_line: 1,
+                end_column: 27,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 27,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_7.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_7.snap
new file mode 100644
index 000000000..7f48f3a65
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_7.snap
@@ -0,0 +1,72 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"key in ['key']\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "key",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 3,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 3,
+            },
+            ops: [
+                In,
+            ],
+            comparators: [
+                Node {
+                    node: List(
+                        ListExpr {
+                            elts: [
+                                Node {
+                                    node: StringLit(
+                                        StringLit {
+                                            is_long_string: false,
+                                            raw_value: "'key'",
+                                            value: "key",
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 8,
+                                    end_line: 1,
+                                    end_column: 13,
+                                },
+                            ],
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 14,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 14,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_8.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_8.snap
new file mode 100644
index 000000000..1bb4f300a
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_8.snap
@@ -0,0 +1,72 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"key not in ['key']\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "key",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 3,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 3,
+            },
+            ops: [
+                NotIn,
+            ],
+            comparators: [
+                Node {
+                    node: List(
+                        ListExpr {
+                            elts: [
+                                Node {
+                                    node: StringLit(
+                                        StringLit {
+                                            is_long_string: false,
+                                            raw_value: "'key'",
+                                            value: "key",
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 12,
+                                    end_line: 1,
+                                    end_column: 17,
+                                },
+                            ],
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 11,
+                    end_line: 1,
+                    end_column: 18,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 18,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_9.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_9.snap
new file mode 100644
index 000000000..54807efd4
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_9.snap
@@ -0,0 +1,111 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1 is 1 and 11 is not 22\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 1,
+                        },
+                        ops: [
+                            Is,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 5,
+                                end_line: 1,
+                                end_column: 6,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 23,
+            },
+            op: Bin(
+                And,
+            ),
+            right: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        11,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 11,
+                            end_line: 1,
+                            end_column: 13,
+                        },
+                        ops: [
+                            IsNot,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            22,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 21,
+                                end_line: 1,
+                                end_column: 23,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 11,
+                end_line: 1,
+                end_column: 23,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 23,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_with_paren.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_with_paren.snap
new file mode 100644
index 000000000..179afbde6
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__binary_expr_with_paren.snap
@@ -0,0 +1,118 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1*(2+3)-4\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 1,
+                        },
+                        op: Bin(
+                            Mul,
+                        ),
+                        right: Node {
+                            node: Paren(
+                                ParenExpr {
+                                    expr: Node {
+                                        node: Binary(
+                                            BinaryExpr {
+                                                left: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                2,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 1,
+                                                    column: 3,
+                                                    end_line: 1,
+                                                    end_column: 4,
+                                                },
+                                                op: Bin(
+                                                    Add,
+                                                ),
+                                                right: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                3,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 1,
+                                                    column: 5,
+                                                    end_line: 1,
+                                                    end_column: 6,
+                                                },
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 3,
+                                        end_line: 1,
+                                        end_column: 6,
+                                    },
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 2,
+                            end_line: 1,
+                            end_column: 7,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 7,
+            },
+            op: Bin(
+                Sub,
+            ),
+            right: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            4,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 8,
+                end_line: 1,
+                end_column: 9,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 9,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_0.snap
new file mode 100644
index 000000000..44b34d0df
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_0.snap
@@ -0,0 +1,41 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"func0()\"####)"
+---
+Node {
+    node: Call(
+        CallExpr {
+            func: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "func0",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 5,
+            },
+            args: [],
+            keywords: [],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_1.snap
new file mode 100644
index 000000000..7f53f5a9e
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_1.snap
@@ -0,0 +1,57 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"func1(1)\"####)"
+---
+Node {
+    node: Call(
+        CallExpr {
+            func: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "func1",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 5,
+            },
+            args: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 6,
+                    end_line: 1,
+                    end_column: 7,
+                },
+            ],
+            keywords: [],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 8,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_2.snap
new file mode 100644
index 000000000..365a54fd2
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_2.snap
@@ -0,0 +1,89 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"func2(x=2)\"####)"
+---
+Node {
+    node: Call(
+        CallExpr {
+            func: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "func2",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 5,
+            },
+            args: [],
+            keywords: [
+                Node {
+                    node: Keyword {
+                        arg: Node {
+                            node: Identifier {
+                                names: [
+                                    Node {
+                                        node: "x",
+                                        filename: "",
+                                        line: 1,
+                                        column: 6,
+                                        end_line: 1,
+                                        end_column: 7,
+                                    },
+                                ],
+                                pkgpath: "",
+                                ctx: Load,
+                            },
+                            filename: "",
+                            line: 1,
+                            column: 6,
+                            end_line: 1,
+                            end_column: 7,
+                        },
+                        value: Some(
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            2,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 8,
+                                end_line: 1,
+                                end_column: 9,
+                            },
+                        ),
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 6,
+                    end_line: 1,
+                    end_column: 9,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 10,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_3.snap
new file mode 100644
index 000000000..abe42a4cb
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__call_expr_3.snap
@@ -0,0 +1,105 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"func3(1,x=2)\"####)"
+---
+Node {
+    node: Call(
+        CallExpr {
+            func: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "func3",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 5,
+            },
+            args: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 6,
+                    end_line: 1,
+                    end_column: 7,
+                },
+            ],
+            keywords: [
+                Node {
+                    node: Keyword {
+                        arg: Node {
+                            node: Identifier {
+                                names: [
+                                    Node {
+                                        node: "x",
+                                        filename: "",
+                                        line: 1,
+                                        column: 8,
+                                        end_line: 1,
+                                        end_column: 9,
+                                    },
+                                ],
+                                pkgpath: "",
+                                ctx: Load,
+                            },
+                            filename: "",
+                            line: 1,
+                            column: 8,
+                            end_line: 1,
+                            end_column: 9,
+                        },
+                        value: Some(
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            2,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 10,
+                                end_line: 1,
+                                end_column: 11,
+                            },
+                        ),
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 8,
+                    end_line: 1,
+                    end_column: 11,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 12,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_0.snap
new file mode 100644
index 000000000..9368a7f64
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_0.snap
@@ -0,0 +1,140 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    \"name\" = {\n        \"name\": \"alice\"\n    },\n    \"gender\" = \"female\"\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: StringLit(
+                                    StringLit {
+                                        is_long_string: false,
+                                        raw_value: "\"name\"",
+                                        value: "name",
+                                    },
+                                ),
+                                filename: "",
+                                line: 2,
+                                column: 4,
+                                end_line: 2,
+                                end_column: 10,
+                            },
+                        ),
+                        value: Node {
+                            node: Config(
+                                ConfigExpr {
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: StringLit(
+                                                            StringLit {
+                                                                is_long_string: false,
+                                                                raw_value: "\"name\"",
+                                                                value: "name",
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 3,
+                                                        column: 8,
+                                                        end_line: 3,
+                                                        end_column: 14,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: StringLit(
+                                                        StringLit {
+                                                            is_long_string: false,
+                                                            raw_value: "\"alice\"",
+                                                            value: "alice",
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 16,
+                                                    end_line: 3,
+                                                    end_column: 23,
+                                                },
+                                                operation: Union,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 3,
+                                            column: 8,
+                                            end_line: 3,
+                                            end_column: 23,
+                                        },
+                                    ],
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 13,
+                            end_line: 4,
+                            end_column: 5,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 4,
+                    end_column: 5,
+                },
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: StringLit(
+                                    StringLit {
+                                        is_long_string: false,
+                                        raw_value: "\"gender\"",
+                                        value: "gender",
+                                    },
+                                ),
+                                filename: "",
+                                line: 5,
+                                column: 4,
+                                end_line: 5,
+                                end_column: 12,
+                            },
+                        ),
+                        value: Node {
+                            node: StringLit(
+                                StringLit {
+                                    is_long_string: false,
+                                    raw_value: "\"female\"",
+                                    value: "female",
+                                },
+                            ),
+                            filename: "",
+                            line: 5,
+                            column: 15,
+                            end_line: 5,
+                            end_column: 23,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 5,
+                    column: 4,
+                    end_line: 5,
+                    end_column: 23,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 6,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_1.snap
new file mode 100644
index 000000000..6c3076fa3
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_1.snap
@@ -0,0 +1,140 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    \"name\" = {\n        \"name\": \"alice\"\n    }\n    \"gender\" = \"female\",\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: StringLit(
+                                    StringLit {
+                                        is_long_string: false,
+                                        raw_value: "\"name\"",
+                                        value: "name",
+                                    },
+                                ),
+                                filename: "",
+                                line: 2,
+                                column: 4,
+                                end_line: 2,
+                                end_column: 10,
+                            },
+                        ),
+                        value: Node {
+                            node: Config(
+                                ConfigExpr {
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: StringLit(
+                                                            StringLit {
+                                                                is_long_string: false,
+                                                                raw_value: "\"name\"",
+                                                                value: "name",
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 3,
+                                                        column: 8,
+                                                        end_line: 3,
+                                                        end_column: 14,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: StringLit(
+                                                        StringLit {
+                                                            is_long_string: false,
+                                                            raw_value: "\"alice\"",
+                                                            value: "alice",
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 16,
+                                                    end_line: 3,
+                                                    end_column: 23,
+                                                },
+                                                operation: Union,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 3,
+                                            column: 8,
+                                            end_line: 3,
+                                            end_column: 23,
+                                        },
+                                    ],
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 13,
+                            end_line: 4,
+                            end_column: 5,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 4,
+                    end_column: 5,
+                },
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: StringLit(
+                                    StringLit {
+                                        is_long_string: false,
+                                        raw_value: "\"gender\"",
+                                        value: "gender",
+                                    },
+                                ),
+                                filename: "",
+                                line: 5,
+                                column: 4,
+                                end_line: 5,
+                                end_column: 12,
+                            },
+                        ),
+                        value: Node {
+                            node: StringLit(
+                                StringLit {
+                                    is_long_string: false,
+                                    raw_value: "\"female\"",
+                                    value: "female",
+                                },
+                            ),
+                            filename: "",
+                            line: 5,
+                            column: 15,
+                            end_line: 5,
+                            end_column: 23,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 5,
+                    column: 4,
+                    end_line: 5,
+                    end_column: 23,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 6,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_2.snap
new file mode 100644
index 000000000..dbab80146
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_expr_2.snap
@@ -0,0 +1,140 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    \"name\" = {\n        \"name\": \"alice\",\n    }\n    \"gender\" = \"female\"\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: StringLit(
+                                    StringLit {
+                                        is_long_string: false,
+                                        raw_value: "\"name\"",
+                                        value: "name",
+                                    },
+                                ),
+                                filename: "",
+                                line: 2,
+                                column: 4,
+                                end_line: 2,
+                                end_column: 10,
+                            },
+                        ),
+                        value: Node {
+                            node: Config(
+                                ConfigExpr {
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: StringLit(
+                                                            StringLit {
+                                                                is_long_string: false,
+                                                                raw_value: "\"name\"",
+                                                                value: "name",
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 3,
+                                                        column: 8,
+                                                        end_line: 3,
+                                                        end_column: 14,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: StringLit(
+                                                        StringLit {
+                                                            is_long_string: false,
+                                                            raw_value: "\"alice\"",
+                                                            value: "alice",
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 16,
+                                                    end_line: 3,
+                                                    end_column: 23,
+                                                },
+                                                operation: Union,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 3,
+                                            column: 8,
+                                            end_line: 3,
+                                            end_column: 23,
+                                        },
+                                    ],
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 13,
+                            end_line: 4,
+                            end_column: 5,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 4,
+                    end_column: 5,
+                },
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: StringLit(
+                                    StringLit {
+                                        is_long_string: false,
+                                        raw_value: "\"gender\"",
+                                        value: "gender",
+                                    },
+                                ),
+                                filename: "",
+                                line: 5,
+                                column: 4,
+                                end_line: 5,
+                                end_column: 12,
+                            },
+                        ),
+                        value: Node {
+                            node: StringLit(
+                                StringLit {
+                                    is_long_string: false,
+                                    raw_value: "\"female\"",
+                                    value: "female",
+                                },
+                            ),
+                            filename: "",
+                            line: 5,
+                            column: 15,
+                            end_line: 5,
+                            end_column: 23,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 5,
+                    column: 4,
+                    end_line: 5,
+                    end_column: 23,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 6,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_0.snap
new file mode 100644
index 000000000..8262d6a38
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_0.snap
@@ -0,0 +1,107 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    if True:\n        a = 1\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: None,
+                        value: Node {
+                            node: ConfigIfEntry(
+                                ConfigIfEntryExpr {
+                                    if_cond: Node {
+                                        node: NameConstantLit(
+                                            NameConstantLit {
+                                                value: True,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 2,
+                                        column: 7,
+                                        end_line: 2,
+                                        end_column: 11,
+                                    },
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: Identifier(
+                                                            Identifier {
+                                                                names: [
+                                                                    Node {
+                                                                        node: "a",
+                                                                        filename: "",
+                                                                        line: 3,
+                                                                        column: 8,
+                                                                        end_line: 3,
+                                                                        end_column: 9,
+                                                                    },
+                                                                ],
+                                                                pkgpath: "",
+                                                                ctx: Load,
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 3,
+                                                        column: 8,
+                                                        end_line: 3,
+                                                        end_column: 9,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                1,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 12,
+                                                    end_line: 3,
+                                                    end_column: 13,
+                                                },
+                                                operation: Override,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 3,
+                                            column: 8,
+                                            end_line: 3,
+                                            end_column: 13,
+                                        },
+                                    ],
+                                    orelse: None,
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 4,
+                            end_line: 4,
+                            end_column: 0,
+                        },
+                        operation: Union,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 4,
+                    end_column: 0,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 4,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_1.snap
new file mode 100644
index 000000000..3077aef2c
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_1.snap
@@ -0,0 +1,172 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    if True:\n        a = 1\n    else:\n        a = 2\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: None,
+                        value: Node {
+                            node: ConfigIfEntry(
+                                ConfigIfEntryExpr {
+                                    if_cond: Node {
+                                        node: NameConstantLit(
+                                            NameConstantLit {
+                                                value: True,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 2,
+                                        column: 7,
+                                        end_line: 2,
+                                        end_column: 11,
+                                    },
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: Identifier(
+                                                            Identifier {
+                                                                names: [
+                                                                    Node {
+                                                                        node: "a",
+                                                                        filename: "",
+                                                                        line: 3,
+                                                                        column: 8,
+                                                                        end_line: 3,
+                                                                        end_column: 9,
+                                                                    },
+                                                                ],
+                                                                pkgpath: "",
+                                                                ctx: Load,
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 3,
+                                                        column: 8,
+                                                        end_line: 3,
+                                                        end_column: 9,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                1,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 12,
+                                                    end_line: 3,
+                                                    end_column: 13,
+                                                },
+                                                operation: Override,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 3,
+                                            column: 8,
+                                            end_line: 3,
+                                            end_column: 13,
+                                        },
+                                    ],
+                                    orelse: Some(
+                                        Node {
+                                            node: Config(
+                                                ConfigExpr {
+                                                    items: [
+                                                        Node {
+                                                            node: ConfigEntry {
+                                                                key: Some(
+                                                                    Node {
+                                                                        node: Identifier(
+                                                                            Identifier {
+                                                                                names: [
+                                                                                    Node {
+                                                                                        node: "a",
+                                                                                        filename: "",
+                                                                                        line: 5,
+                                                                                        column: 8,
+                                                                                        end_line: 5,
+                                                                                        end_column: 9,
+                                                                                    },
+                                                                                ],
+                                                                                pkgpath: "",
+                                                                                ctx: Load,
+                                                                            },
+                                                                        ),
+                                                                        filename: "",
+                                                                        line: 5,
+                                                                        column: 8,
+                                                                        end_line: 5,
+                                                                        end_column: 9,
+                                                                    },
+                                                                ),
+                                                                value: Node {
+                                                                    node: NumberLit(
+                                                                        NumberLit {
+                                                                            binary_suffix: None,
+                                                                            value: Int(
+                                                                                2,
+                                                                            ),
+                                                                        },
+                                                                    ),
+                                                                    filename: "",
+                                                                    line: 5,
+                                                                    column: 12,
+                                                                    end_line: 5,
+                                                                    end_column: 13,
+                                                                },
+                                                                operation: Override,
+                                                                insert_index: -1,
+                                                            },
+                                                            filename: "",
+                                                            line: 5,
+                                                            column: 8,
+                                                            end_line: 5,
+                                                            end_column: 13,
+                                                        },
+                                                    ],
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 4,
+                                            column: 4,
+                                            end_line: 6,
+                                            end_column: 0,
+                                        },
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 4,
+                            end_line: 6,
+                            end_column: 0,
+                        },
+                        operation: Union,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 6,
+                    end_column: 0,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 6,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_2.snap
new file mode 100644
index 000000000..65871797e
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_2.snap
@@ -0,0 +1,292 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    if True:\n        a = 1\n    elif x > 1:\n        a = 2\n    else:\n        a = 3\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: None,
+                        value: Node {
+                            node: ConfigIfEntry(
+                                ConfigIfEntryExpr {
+                                    if_cond: Node {
+                                        node: NameConstantLit(
+                                            NameConstantLit {
+                                                value: True,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 2,
+                                        column: 7,
+                                        end_line: 2,
+                                        end_column: 11,
+                                    },
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: Identifier(
+                                                            Identifier {
+                                                                names: [
+                                                                    Node {
+                                                                        node: "a",
+                                                                        filename: "",
+                                                                        line: 3,
+                                                                        column: 8,
+                                                                        end_line: 3,
+                                                                        end_column: 9,
+                                                                    },
+                                                                ],
+                                                                pkgpath: "",
+                                                                ctx: Load,
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 3,
+                                                        column: 8,
+                                                        end_line: 3,
+                                                        end_column: 9,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                1,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 12,
+                                                    end_line: 3,
+                                                    end_column: 13,
+                                                },
+                                                operation: Override,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 3,
+                                            column: 8,
+                                            end_line: 3,
+                                            end_column: 13,
+                                        },
+                                    ],
+                                    orelse: Some(
+                                        Node {
+                                            node: ConfigIfEntry(
+                                                ConfigIfEntryExpr {
+                                                    if_cond: Node {
+                                                        node: Compare(
+                                                            Compare {
+                                                                left: Node {
+                                                                    node: Identifier(
+                                                                        Identifier {
+                                                                            names: [
+                                                                                Node {
+                                                                                    node: "x",
+                                                                                    filename: "",
+                                                                                    line: 4,
+                                                                                    column: 9,
+                                                                                    end_line: 4,
+                                                                                    end_column: 10,
+                                                                                },
+                                                                            ],
+                                                                            pkgpath: "",
+                                                                            ctx: Load,
+                                                                        },
+                                                                    ),
+                                                                    filename: "",
+                                                                    line: 4,
+                                                                    column: 9,
+                                                                    end_line: 4,
+                                                                    end_column: 10,
+                                                                },
+                                                                ops: [
+                                                                    Gt,
+                                                                ],
+                                                                comparators: [
+                                                                    Node {
+                                                                        node: NumberLit(
+                                                                            NumberLit {
+                                                                                binary_suffix: None,
+                                                                                value: Int(
+                                                                                    1,
+                                                                                ),
+                                                                            },
+                                                                        ),
+                                                                        filename: "",
+                                                                        line: 4,
+                                                                        column: 13,
+                                                                        end_line: 4,
+                                                                        end_column: 14,
+                                                                    },
+                                                                ],
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 4,
+                                                        column: 9,
+                                                        end_line: 4,
+                                                        end_column: 14,
+                                                    },
+                                                    items: [
+                                                        Node {
+                                                            node: ConfigEntry {
+                                                                key: Some(
+                                                                    Node {
+                                                                        node: Identifier(
+                                                                            Identifier {
+                                                                                names: [
+                                                                                    Node {
+                                                                                        node: "a",
+                                                                                        filename: "",
+                                                                                        line: 5,
+                                                                                        column: 8,
+                                                                                        end_line: 5,
+                                                                                        end_column: 9,
+                                                                                    },
+                                                                                ],
+                                                                                pkgpath: "",
+                                                                                ctx: Load,
+                                                                            },
+                                                                        ),
+                                                                        filename: "",
+                                                                        line: 5,
+                                                                        column: 8,
+                                                                        end_line: 5,
+                                                                        end_column: 9,
+                                                                    },
+                                                                ),
+                                                                value: Node {
+                                                                    node: NumberLit(
+                                                                        NumberLit {
+                                                                            binary_suffix: None,
+                                                                            value: Int(
+                                                                                2,
+                                                                            ),
+                                                                        },
+                                                                    ),
+                                                                    filename: "",
+                                                                    line: 5,
+                                                                    column: 12,
+                                                                    end_line: 5,
+                                                                    end_column: 13,
+                                                                },
+                                                                operation: Override,
+                                                                insert_index: -1,
+                                                            },
+                                                            filename: "",
+                                                            line: 5,
+                                                            column: 8,
+                                                            end_line: 5,
+                                                            end_column: 13,
+                                                        },
+                                                    ],
+                                                    orelse: Some(
+                                                        Node {
+                                                            node: Config(
+                                                                ConfigExpr {
+                                                                    items: [
+                                                                        Node {
+                                                                            node: ConfigEntry {
+                                                                                key: Some(
+                                                                                    Node {
+                                                                                        node: Identifier(
+                                                                                            Identifier {
+                                                                                                names: [
+                                                                                                    Node {
+                                                                                                        node: "a",
+                                                                                                        filename: "",
+                                                                                                        line: 7,
+                                                                                                        column: 8,
+                                                                                                        end_line: 7,
+                                                                                                        end_column: 9,
+                                                                                                    },
+                                                                                                ],
+                                                                                                pkgpath: "",
+                                                                                                ctx: Load,
+                                                                                            },
+                                                                                        ),
+                                                                                        filename: "",
+                                                                                        line: 7,
+                                                                                        column: 8,
+                                                                                        end_line: 7,
+                                                                                        end_column: 9,
+                                                                                    },
+                                                                                ),
+                                                                                value: Node {
+                                                                                    node: NumberLit(
+                                                                                        NumberLit {
+                                                                                            binary_suffix: None,
+                                                                                            value: Int(
+                                                                                                3,
+                                                                                            ),
+                                                                                        },
+                                                                                    ),
+                                                                                    filename: "",
+                                                                                    line: 7,
+                                                                                    column: 12,
+                                                                                    end_line: 7,
+                                                                                    end_column: 13,
+                                                                                },
+                                                                                operation: Override,
+                                                                                insert_index: -1,
+                                                                            },
+                                                                            filename: "",
+                                                                            line: 7,
+                                                                            column: 8,
+                                                                            end_line: 7,
+                                                                            end_column: 13,
+                                                                        },
+                                                                    ],
+                                                                },
+                                                            ),
+                                                            filename: "",
+                                                            line: 6,
+                                                            column: 4,
+                                                            end_line: 8,
+                                                            end_column: 0,
+                                                        },
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 4,
+                                            column: 4,
+                                            end_line: 6,
+                                            end_column: 4,
+                                        },
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 4,
+                            end_line: 8,
+                            end_column: 0,
+                        },
+                        operation: Union,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 8,
+                    end_column: 0,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 8,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_3.snap
new file mode 100644
index 000000000..1102a3fe4
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__config_if_expr_3.snap
@@ -0,0 +1,145 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    if True:\n        if False:\n            a = 1\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: None,
+                        value: Node {
+                            node: ConfigIfEntry(
+                                ConfigIfEntryExpr {
+                                    if_cond: Node {
+                                        node: NameConstantLit(
+                                            NameConstantLit {
+                                                value: True,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 2,
+                                        column: 7,
+                                        end_line: 2,
+                                        end_column: 11,
+                                    },
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: None,
+                                                value: Node {
+                                                    node: ConfigIfEntry(
+                                                        ConfigIfEntryExpr {
+                                                            if_cond: Node {
+                                                                node: NameConstantLit(
+                                                                    NameConstantLit {
+                                                                        value: False,
+                                                                    },
+                                                                ),
+                                                                filename: "",
+                                                                line: 3,
+                                                                column: 11,
+                                                                end_line: 3,
+                                                                end_column: 16,
+                                                            },
+                                                            items: [
+                                                                Node {
+                                                                    node: ConfigEntry {
+                                                                        key: Some(
+                                                                            Node {
+                                                                                node: Identifier(
+                                                                                    Identifier {
+                                                                                        names: [
+                                                                                            Node {
+                                                                                                node: "a",
+                                                                                                filename: "",
+                                                                                                line: 4,
+                                                                                                column: 12,
+                                                                                                end_line: 4,
+                                                                                                end_column: 13,
+                                                                                            },
+                                                                                        ],
+                                                                                        pkgpath: "",
+                                                                                        ctx: Load,
+                                                                                    },
+                                                                                ),
+                                                                                filename: "",
+                                                                                line: 4,
+                                                                                column: 12,
+                                                                                end_line: 4,
+                                                                                end_column: 13,
+                                                                            },
+                                                                        ),
+                                                                        value: Node {
+                                                                            node: NumberLit(
+                                                                                NumberLit {
+                                                                                    binary_suffix: None,
+                                                                                    value: Int(
+                                                                                        1,
+                                                                                    ),
+                                                                                },
+                                                                            ),
+                                                                            filename: "",
+                                                                            line: 4,
+                                                                            column: 16,
+                                                                            end_line: 4,
+                                                                            end_column: 17,
+                                                                        },
+                                                                        operation: Override,
+                                                                        insert_index: -1,
+                                                                    },
+                                                                    filename: "",
+                                                                    line: 4,
+                                                                    column: 12,
+                                                                    end_line: 4,
+                                                                    end_column: 17,
+                                                                },
+                                                            ],
+                                                            orelse: None,
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 8,
+                                                    end_line: 5,
+                                                    end_column: 0,
+                                                },
+                                                operation: Override,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 3,
+                                            column: 8,
+                                            end_line: 5,
+                                            end_column: 0,
+                                        },
+                                    ],
+                                    orelse: None,
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 4,
+                            end_line: 5,
+                            end_column: 0,
+                        },
+                        operation: Union,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 5,
+                    end_column: 0,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 5,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__dict_comp_expr.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__dict_comp_expr.snap
new file mode 100644
index 000000000..47a0c8716
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__dict_comp_expr.snap
@@ -0,0 +1,268 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{k: v + 1 for k, v in {k1 = 1, k2 = 2}}\"####)"
+---
+Node {
+    node: DictComp(
+        DictComp {
+            entry: ConfigEntry {
+                key: Some(
+                    Node {
+                        node: Identifier(
+                            Identifier {
+                                names: [
+                                    Node {
+                                        node: "k",
+                                        filename: "",
+                                        line: 1,
+                                        column: 1,
+                                        end_line: 1,
+                                        end_column: 2,
+                                    },
+                                ],
+                                pkgpath: "",
+                                ctx: Load,
+                            },
+                        ),
+                        filename: "",
+                        line: 1,
+                        column: 1,
+                        end_line: 1,
+                        end_column: 2,
+                    },
+                ),
+                value: Node {
+                    node: Binary(
+                        BinaryExpr {
+                            left: Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "v",
+                                                filename: "",
+                                                line: 1,
+                                                column: 4,
+                                                end_line: 1,
+                                                end_column: 5,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 4,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                            op: Bin(
+                                Add,
+                            ),
+                            right: Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 8,
+                                end_line: 1,
+                                end_column: 9,
+                            },
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 9,
+                },
+                operation: Union,
+                insert_index: -1,
+            },
+            generators: [
+                Node {
+                    node: CompClause {
+                        targets: [
+                            Node {
+                                node: Identifier {
+                                    names: [
+                                        Node {
+                                            node: "k",
+                                            filename: "",
+                                            line: 1,
+                                            column: 14,
+                                            end_line: 1,
+                                            end_column: 15,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 14,
+                                end_line: 1,
+                                end_column: 15,
+                            },
+                            Node {
+                                node: Identifier {
+                                    names: [
+                                        Node {
+                                            node: "v",
+                                            filename: "",
+                                            line: 1,
+                                            column: 17,
+                                            end_line: 1,
+                                            end_column: 18,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 17,
+                                end_line: 1,
+                                end_column: 18,
+                            },
+                        ],
+                        iter: Node {
+                            node: Config(
+                                ConfigExpr {
+                                    items: [
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: Identifier(
+                                                            Identifier {
+                                                                names: [
+                                                                    Node {
+                                                                        node: "k1",
+                                                                        filename: "",
+                                                                        line: 1,
+                                                                        column: 23,
+                                                                        end_line: 1,
+                                                                        end_column: 25,
+                                                                    },
+                                                                ],
+                                                                pkgpath: "",
+                                                                ctx: Load,
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 23,
+                                                        end_line: 1,
+                                                        end_column: 25,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                1,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 1,
+                                                    column: 28,
+                                                    end_line: 1,
+                                                    end_column: 29,
+                                                },
+                                                operation: Override,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 1,
+                                            column: 23,
+                                            end_line: 1,
+                                            end_column: 29,
+                                        },
+                                        Node {
+                                            node: ConfigEntry {
+                                                key: Some(
+                                                    Node {
+                                                        node: Identifier(
+                                                            Identifier {
+                                                                names: [
+                                                                    Node {
+                                                                        node: "k2",
+                                                                        filename: "",
+                                                                        line: 1,
+                                                                        column: 31,
+                                                                        end_line: 1,
+                                                                        end_column: 33,
+                                                                    },
+                                                                ],
+                                                                pkgpath: "",
+                                                                ctx: Load,
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 31,
+                                                        end_line: 1,
+                                                        end_column: 33,
+                                                    },
+                                                ),
+                                                value: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                2,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 1,
+                                                    column: 36,
+                                                    end_line: 1,
+                                                    end_column: 37,
+                                                },
+                                                operation: Override,
+                                                insert_index: -1,
+                                            },
+                                            filename: "",
+                                            line: 1,
+                                            column: 31,
+                                            end_line: 1,
+                                            end_column: 37,
+                                        },
+                                    ],
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 22,
+                            end_line: 1,
+                            end_column: 38,
+                        },
+                        ifs: [],
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 10,
+                    end_line: 1,
+                    end_column: 38,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 39,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__dict_expr.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__dict_expr.snap
new file mode 100644
index 000000000..091ef3644
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__dict_expr.snap
@@ -0,0 +1,136 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{k0=v0, k1=v1}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "k0",
+                                                filename: "",
+                                                line: 1,
+                                                column: 1,
+                                                end_line: 1,
+                                                end_column: 3,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 1,
+                                end_line: 1,
+                                end_column: 3,
+                            },
+                        ),
+                        value: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "v0",
+                                            filename: "",
+                                            line: 1,
+                                            column: 4,
+                                            end_line: 1,
+                                            end_column: 6,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 4,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 6,
+                },
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "k1",
+                                                filename: "",
+                                                line: 1,
+                                                column: 8,
+                                                end_line: 1,
+                                                end_column: 10,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 8,
+                                end_line: 1,
+                                end_column: 10,
+                            },
+                        ),
+                        value: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "v1",
+                                            filename: "",
+                                            line: 1,
+                                            column: 11,
+                                            end_line: 1,
+                                            end_column: 13,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 11,
+                            end_line: 1,
+                            end_column: 13,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 8,
+                    end_line: 1,
+                    end_column: 13,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 14,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_brace_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_brace_0.snap
new file mode 100644
index 000000000..ad2a5a0cf
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_brace_0.snap
@@ -0,0 +1,69 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{a=2}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "a",
+                                                filename: "",
+                                                line: 1,
+                                                column: 1,
+                                                end_line: 1,
+                                                end_column: 2,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 1,
+                                end_line: 1,
+                                end_column: 2,
+                            },
+                        ),
+                        value: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        2,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 3,
+                            end_line: 1,
+                            end_column: 4,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_brace_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_brace_1.snap
new file mode 100644
index 000000000..9fb8ad972
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_brace_1.snap
@@ -0,0 +1,69 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{a=2}}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "a",
+                                                filename: "",
+                                                line: 1,
+                                                column: 1,
+                                                end_line: 1,
+                                                end_column: 2,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 1,
+                                end_line: 1,
+                                end_column: 2,
+                            },
+                        ),
+                        value: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        2,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 3,
+                            end_line: 1,
+                            end_column: 4,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_0.snap
new file mode 100644
index 000000000..5f61ac170
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_0.snap
@@ -0,0 +1,49 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[2,3]\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 2,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                3,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_1.snap
new file mode 100644
index 000000000..8540a6417
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_1.snap
@@ -0,0 +1,63 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[[2,3]\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: List(
+                        ListExpr {
+                            elts: [
+                                Node {
+                                    node: NumberLit(
+                                        NumberLit {
+                                            binary_suffix: None,
+                                            value: Int(
+                                                2,
+                                            ),
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 2,
+                                    end_line: 1,
+                                    end_column: 3,
+                                },
+                                Node {
+                                    node: NumberLit(
+                                        NumberLit {
+                                            binary_suffix: None,
+                                            value: Int(
+                                                3,
+                                            ),
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 4,
+                                    end_line: 1,
+                                    end_column: 5,
+                                },
+                            ],
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_2.snap
new file mode 100644
index 000000000..974638b56
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_2.snap
@@ -0,0 +1,49 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[2,3]]\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 2,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                3,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_3.snap
new file mode 100644
index 000000000..f00b8be1a
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_3.snap
@@ -0,0 +1,49 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[2,3\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 2,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                3,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 4,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_4.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_4.snap
new file mode 100644
index 000000000..1caf60fff
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_4.snap
@@ -0,0 +1,18 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_5.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_5.snap
new file mode 100644
index 000000000..aa4f7fe96
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_5.snap
@@ -0,0 +1,49 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[\n    1\n    2,\n]\n        \"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 2,
+                    end_column: 5,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 3,
+                    column: 4,
+                    end_line: 3,
+                    end_column: 5,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 4,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_6.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_6.snap
new file mode 100644
index 000000000..ca20c1f26
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_6.snap
@@ -0,0 +1,49 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[\n    1,2,\n]\n        \"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 2,
+                    end_column: 5,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 2,
+                    column: 6,
+                    end_line: 2,
+                    end_column: 7,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 3,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_7.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_7.snap
new file mode 100644
index 000000000..9ae683dfa
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_bracket_7.snap
@@ -0,0 +1,49 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[\n    1,2,\n\n        \"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 2,
+                    end_column: 5,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 2,
+                    column: 6,
+                    end_line: 2,
+                    end_column: 7,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 4,
+    end_column: 8,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_0.snap
new file mode 100644
index 000000000..bcb6bdaff
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_0.snap
@@ -0,0 +1,80 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"({a=2}\"####)"
+---
+Node {
+    node: Paren(
+        ParenExpr {
+            expr: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [
+                            Node {
+                                node: ConfigEntry {
+                                    key: Some(
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "a",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 2,
+                                                            end_line: 1,
+                                                            end_column: 3,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 2,
+                                            end_line: 1,
+                                            end_column: 3,
+                                        },
+                                    ),
+                                    value: Node {
+                                        node: NumberLit(
+                                            NumberLit {
+                                                binary_suffix: None,
+                                                value: Int(
+                                                    2,
+                                                ),
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 4,
+                                        end_line: 1,
+                                        end_column: 5,
+                                    },
+                                    operation: Override,
+                                    insert_index: -1,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 2,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 6,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_1.snap
new file mode 100644
index 000000000..909f52bcf
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_1.snap
@@ -0,0 +1,91 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"({a=(2}\"####)"
+---
+Node {
+    node: Paren(
+        ParenExpr {
+            expr: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [
+                            Node {
+                                node: ConfigEntry {
+                                    key: Some(
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "a",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 2,
+                                                            end_line: 1,
+                                                            end_column: 3,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 2,
+                                            end_line: 1,
+                                            end_column: 3,
+                                        },
+                                    ),
+                                    value: Node {
+                                        node: Paren(
+                                            ParenExpr {
+                                                expr: Node {
+                                                    node: NumberLit(
+                                                        NumberLit {
+                                                            binary_suffix: None,
+                                                            value: Int(
+                                                                2,
+                                                            ),
+                                                        },
+                                                    ),
+                                                    filename: "",
+                                                    line: 1,
+                                                    column: 5,
+                                                    end_line: 1,
+                                                    end_column: 6,
+                                                },
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 4,
+                                        end_line: 1,
+                                        end_column: 7,
+                                    },
+                                    operation: Override,
+                                    insert_index: -1,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 2,
+                                end_line: 1,
+                                end_column: 7,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 7,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_2.snap
new file mode 100644
index 000000000..086df811c
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_2.snap
@@ -0,0 +1,83 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{a=[2]\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "a",
+                                                filename: "",
+                                                line: 1,
+                                                column: 1,
+                                                end_line: 1,
+                                                end_column: 2,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 1,
+                                end_line: 1,
+                                end_column: 2,
+                            },
+                        ),
+                        value: Node {
+                            node: List(
+                                ListExpr {
+                                    elts: [
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        2,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 4,
+                                            end_line: 1,
+                                            end_column: 5,
+                                        },
+                                    ],
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 3,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_3.snap
new file mode 100644
index 000000000..47ac7d93d
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_3.snap
@@ -0,0 +1,83 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[{a=2}\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: Config(
+                        ConfigExpr {
+                            items: [
+                                Node {
+                                    node: ConfigEntry {
+                                        key: Some(
+                                            Node {
+                                                node: Identifier(
+                                                    Identifier {
+                                                        names: [
+                                                            Node {
+                                                                node: "a",
+                                                                filename: "",
+                                                                line: 1,
+                                                                column: 2,
+                                                                end_line: 1,
+                                                                end_column: 3,
+                                                            },
+                                                        ],
+                                                        pkgpath: "",
+                                                        ctx: Load,
+                                                    },
+                                                ),
+                                                filename: "",
+                                                line: 1,
+                                                column: 2,
+                                                end_line: 1,
+                                                end_column: 3,
+                                            },
+                                        ),
+                                        value: Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        2,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 4,
+                                            end_line: 1,
+                                            end_column: 5,
+                                        },
+                                        operation: Override,
+                                        insert_index: -1,
+                                    },
+                                    filename: "",
+                                    line: 1,
+                                    column: 2,
+                                    end_line: 1,
+                                    end_column: 5,
+                                },
+                            ],
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_4.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_4.snap
new file mode 100644
index 000000000..de2f05aab
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_4.snap
@@ -0,0 +1,94 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"({a=[2}\"####)"
+---
+Node {
+    node: Paren(
+        ParenExpr {
+            expr: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [
+                            Node {
+                                node: ConfigEntry {
+                                    key: Some(
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "a",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 2,
+                                                            end_line: 1,
+                                                            end_column: 3,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 2,
+                                            end_line: 1,
+                                            end_column: 3,
+                                        },
+                                    ),
+                                    value: Node {
+                                        node: List(
+                                            ListExpr {
+                                                elts: [
+                                                    Node {
+                                                        node: NumberLit(
+                                                            NumberLit {
+                                                                binary_suffix: None,
+                                                                value: Int(
+                                                                    2,
+                                                                ),
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 5,
+                                                        end_line: 1,
+                                                        end_column: 6,
+                                                    },
+                                                ],
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 4,
+                                        end_line: 1,
+                                        end_column: 7,
+                                    },
+                                    operation: Override,
+                                    insert_index: -1,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 2,
+                                end_line: 1,
+                                end_column: 7,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 7,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_5.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_5.snap
new file mode 100644
index 000000000..e69e0ea93
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_5.snap
@@ -0,0 +1,17 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_6.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_6.snap
new file mode 100644
index 000000000..f65835076
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_6.snap
@@ -0,0 +1,69 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    a = 1\n}\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "a",
+                                                filename: "",
+                                                line: 2,
+                                                column: 4,
+                                                end_line: 2,
+                                                end_column: 5,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 2,
+                                column: 4,
+                                end_line: 2,
+                                end_column: 5,
+                            },
+                        ),
+                        value: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 8,
+                            end_line: 2,
+                            end_column: 9,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 2,
+                    end_column: 9,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 3,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_7.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_7.snap
new file mode 100644
index 000000000..39f44a320
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_delim_7.snap
@@ -0,0 +1,69 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"{\n    a = 1\n\"####)"
+---
+Node {
+    node: Config(
+        ConfigExpr {
+            items: [
+                Node {
+                    node: ConfigEntry {
+                        key: Some(
+                            Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "a",
+                                                filename: "",
+                                                line: 2,
+                                                column: 4,
+                                                end_line: 2,
+                                                end_column: 5,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 2,
+                                column: 4,
+                                end_line: 2,
+                                end_column: 5,
+                            },
+                        ),
+                        value: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 2,
+                            column: 8,
+                            end_line: 2,
+                            end_column: 9,
+                        },
+                        operation: Override,
+                        insert_index: -1,
+                    },
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 2,
+                    end_column: 9,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 2,
+    end_column: 10,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_0.snap
new file mode 100644
index 000000000..98eef0b07
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_0.snap
@@ -0,0 +1,60 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"(2+3)\"####)"
+---
+Node {
+    node: Paren(
+        ParenExpr {
+            expr: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        2,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 1,
+                            end_line: 1,
+                            end_column: 2,
+                        },
+                        op: Bin(
+                            Add,
+                        ),
+                        right: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        3,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 3,
+                            end_line: 1,
+                            end_column: 4,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 4,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_1.snap
new file mode 100644
index 000000000..fa0105b3e
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_1.snap
@@ -0,0 +1,71 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"((2+3)\"####)"
+---
+Node {
+    node: Paren(
+        ParenExpr {
+            expr: Node {
+                node: Paren(
+                    ParenExpr {
+                        expr: Node {
+                            node: Binary(
+                                BinaryExpr {
+                                    left: Node {
+                                        node: NumberLit(
+                                            NumberLit {
+                                                binary_suffix: None,
+                                                value: Int(
+                                                    2,
+                                                ),
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 2,
+                                        end_line: 1,
+                                        end_column: 3,
+                                    },
+                                    op: Bin(
+                                        Add,
+                                    ),
+                                    right: Node {
+                                        node: NumberLit(
+                                            NumberLit {
+                                                binary_suffix: None,
+                                                value: Int(
+                                                    3,
+                                                ),
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 4,
+                                        end_line: 1,
+                                        end_column: 5,
+                                    },
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 2,
+                            end_line: 1,
+                            end_column: 5,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 6,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_2.snap
new file mode 100644
index 000000000..405b5f0e0
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__expr_with_paren_2.snap
@@ -0,0 +1,60 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"(2+3))\"####)"
+---
+Node {
+    node: Paren(
+        ParenExpr {
+            expr: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        2,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 1,
+                            end_line: 1,
+                            end_column: 2,
+                        },
+                        op: Bin(
+                            Add,
+                        ),
+                        right: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        3,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 3,
+                            end_line: 1,
+                            end_column: 4,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 4,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__if_expr.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__if_expr.snap
new file mode 100644
index 000000000..6d43c32c0
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__if_expr.snap
@@ -0,0 +1,69 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1 if true else 2\"####)"
+---
+Node {
+    node: If(
+        IfExpr {
+            body: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            1,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            cond: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "true",
+                                filename: "",
+                                line: 1,
+                                column: 5,
+                                end_line: 1,
+                                end_column: 9,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 5,
+                end_line: 1,
+                end_column: 9,
+            },
+            orelse: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            2,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 15,
+                end_line: 1,
+                end_column: 16,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 16,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_0.snap
new file mode 100644
index 000000000..39e4e5a6e
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_0.snap
@@ -0,0 +1,20 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"lambda {}\"####)"
+---
+Node {
+    node: Lambda(
+        LambdaExpr {
+            args: None,
+            return_type_str: None,
+            body: [],
+            return_ty: None,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 9,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_1.snap
new file mode 100644
index 000000000..a560a0138
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_1.snap
@@ -0,0 +1,62 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"lambda x {}\"####)"
+---
+Node {
+    node: Lambda(
+        LambdaExpr {
+            args: Some(
+                Node {
+                    node: Arguments {
+                        args: [
+                            Node {
+                                node: Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 7,
+                                            end_line: 1,
+                                            end_column: 8,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 8,
+                            },
+                        ],
+                        defaults: [
+                            None,
+                        ],
+                        type_annotation_list: [
+                            None,
+                        ],
+                        ty_list: [
+                            None,
+                        ],
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 8,
+                },
+            ),
+            return_type_str: None,
+            body: [],
+            return_ty: None,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 11,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_2.snap
new file mode 100644
index 000000000..5a8575f24
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_2.snap
@@ -0,0 +1,132 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"lambda x: int -> int {x}\"####)"
+---
+Node {
+    node: Lambda(
+        LambdaExpr {
+            args: Some(
+                Node {
+                    node: Arguments {
+                        args: [
+                            Node {
+                                node: Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 7,
+                                            end_line: 1,
+                                            end_column: 8,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 8,
+                            },
+                        ],
+                        defaults: [
+                            None,
+                        ],
+                        type_annotation_list: [
+                            Some(
+                                Node {
+                                    node: "int",
+                                    filename: "",
+                                    line: 1,
+                                    column: 10,
+                                    end_line: 1,
+                                    end_column: 13,
+                                },
+                            ),
+                        ],
+                        ty_list: [
+                            Some(
+                                Node {
+                                    node: Basic(
+                                        Int,
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 10,
+                                    end_line: 1,
+                                    end_column: 13,
+                                },
+                            ),
+                        ],
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 13,
+                },
+            ),
+            return_type_str: Some(
+                "int",
+            ),
+            body: [
+                Node {
+                    node: Expr(
+                        ExprStmt {
+                            exprs: [
+                                Node {
+                                    node: Identifier(
+                                        Identifier {
+                                            names: [
+                                                Node {
+                                                    node: "x",
+                                                    filename: "",
+                                                    line: 1,
+                                                    column: 22,
+                                                    end_line: 1,
+                                                    end_column: 23,
+                                                },
+                                            ],
+                                            pkgpath: "",
+                                            ctx: Load,
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 22,
+                                    end_line: 1,
+                                    end_column: 23,
+                                },
+                            ],
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 22,
+                    end_line: 1,
+                    end_column: 23,
+                },
+            ],
+            return_ty: Some(
+                Node {
+                    node: Basic(
+                        Int,
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 17,
+                    end_line: 1,
+                    end_column: 20,
+                },
+            ),
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 24,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_3.snap
new file mode 100644
index 000000000..cec3abf08
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__lambda_expr_3.snap
@@ -0,0 +1,186 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"lambda {\n    if True:\n        _a = 1\n    else:\n        _a = 2\n    _a\n}\"####)"
+---
+Node {
+    node: Lambda(
+        LambdaExpr {
+            args: None,
+            return_type_str: None,
+            body: [
+                Node {
+                    node: If(
+                        IfStmt {
+                            body: [
+                                Node {
+                                    node: Assign(
+                                        AssignStmt {
+                                            targets: [
+                                                Node {
+                                                    node: Identifier {
+                                                        names: [
+                                                            Node {
+                                                                node: "_a",
+                                                                filename: "",
+                                                                line: 3,
+                                                                column: 8,
+                                                                end_line: 3,
+                                                                end_column: 10,
+                                                            },
+                                                        ],
+                                                        pkgpath: "",
+                                                        ctx: Store,
+                                                    },
+                                                    filename: "",
+                                                    line: 3,
+                                                    column: 8,
+                                                    end_line: 3,
+                                                    end_column: 10,
+                                                },
+                                            ],
+                                            value: Node {
+                                                node: NumberLit(
+                                                    NumberLit {
+                                                        binary_suffix: None,
+                                                        value: Int(
+                                                            1,
+                                                        ),
+                                                    },
+                                                ),
+                                                filename: "",
+                                                line: 3,
+                                                column: 13,
+                                                end_line: 3,
+                                                end_column: 14,
+                                            },
+                                            type_annotation: None,
+                                            ty: None,
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 3,
+                                    column: 8,
+                                    end_line: 3,
+                                    end_column: 14,
+                                },
+                            ],
+                            cond: Node {
+                                node: NameConstantLit(
+                                    NameConstantLit {
+                                        value: True,
+                                    },
+                                ),
+                                filename: "",
+                                line: 2,
+                                column: 7,
+                                end_line: 2,
+                                end_column: 11,
+                            },
+                            orelse: [
+                                Node {
+                                    node: Assign(
+                                        AssignStmt {
+                                            targets: [
+                                                Node {
+                                                    node: Identifier {
+                                                        names: [
+                                                            Node {
+                                                                node: "_a",
+                                                                filename: "",
+                                                                line: 5,
+                                                                column: 8,
+                                                                end_line: 5,
+                                                                end_column: 10,
+                                                            },
+                                                        ],
+                                                        pkgpath: "",
+                                                        ctx: Store,
+                                                    },
+                                                    filename: "",
+                                                    line: 5,
+                                                    column: 8,
+                                                    end_line: 5,
+                                                    end_column: 10,
+                                                },
+                                            ],
+                                            value: Node {
+                                                node: NumberLit(
+                                                    NumberLit {
+                                                        binary_suffix: None,
+                                                        value: Int(
+                                                            2,
+                                                        ),
+                                                    },
+                                                ),
+                                                filename: "",
+                                                line: 5,
+                                                column: 13,
+                                                end_line: 5,
+                                                end_column: 14,
+                                            },
+                                            type_annotation: None,
+                                            ty: None,
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 5,
+                                    column: 8,
+                                    end_line: 5,
+                                    end_column: 14,
+                                },
+                            ],
+                        },
+                    ),
+                    filename: "",
+                    line: 2,
+                    column: 4,
+                    end_line: 6,
+                    end_column: 4,
+                },
+                Node {
+                    node: Expr(
+                        ExprStmt {
+                            exprs: [
+                                Node {
+                                    node: Identifier(
+                                        Identifier {
+                                            names: [
+                                                Node {
+                                                    node: "_a",
+                                                    filename: "",
+                                                    line: 6,
+                                                    column: 4,
+                                                    end_line: 6,
+                                                    end_column: 6,
+                                                },
+                                            ],
+                                            pkgpath: "",
+                                            ctx: Load,
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 6,
+                                    column: 4,
+                                    end_line: 6,
+                                    end_column: 6,
+                                },
+                            ],
+                        },
+                    ),
+                    filename: "",
+                    line: 6,
+                    column: 4,
+                    end_line: 6,
+                    end_column: 6,
+                },
+            ],
+            return_ty: None,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 7,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__line_continue.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__line_continue.snap
new file mode 100644
index 000000000..f45491884
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__line_continue.snap
@@ -0,0 +1,49 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1 + \\\n2\n\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            1,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            op: Bin(
+                Add,
+            ),
+            right: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            2,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 2,
+                column: 0,
+                end_line: 2,
+                end_column: 1,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 2,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_comp_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_comp_expr_0.snap
new file mode 100644
index 000000000..9e0d2a633
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_comp_expr_0.snap
@@ -0,0 +1,162 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[x ** 2 for x in [1, 2, 3]]\"####)"
+---
+Node {
+    node: ListComp(
+        ListComp {
+            elt: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 1,
+                                            end_line: 1,
+                                            end_column: 2,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 1,
+                            end_line: 1,
+                            end_column: 2,
+                        },
+                        op: Bin(
+                            Pow,
+                        ),
+                        right: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        2,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 6,
+                            end_line: 1,
+                            end_column: 7,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 7,
+            },
+            generators: [
+                Node {
+                    node: CompClause {
+                        targets: [
+                            Node {
+                                node: Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 12,
+                                            end_line: 1,
+                                            end_column: 13,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 12,
+                                end_line: 1,
+                                end_column: 13,
+                            },
+                        ],
+                        iter: Node {
+                            node: List(
+                                ListExpr {
+                                    elts: [
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        1,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 18,
+                                            end_line: 1,
+                                            end_column: 19,
+                                        },
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        2,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 21,
+                                            end_line: 1,
+                                            end_column: 22,
+                                        },
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        3,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 24,
+                                            end_line: 1,
+                                            end_column: 25,
+                                        },
+                                    ],
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 17,
+                            end_line: 1,
+                            end_column: 26,
+                        },
+                        ifs: [],
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 8,
+                    end_line: 1,
+                    end_column: 26,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 27,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_comp_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_comp_expr_1.snap
new file mode 100644
index 000000000..724c18610
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_comp_expr_1.snap
@@ -0,0 +1,188 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[i for i in [1, 2, 3] if i > 2]\"####)"
+---
+Node {
+    node: ListComp(
+        ListComp {
+            elt: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "i",
+                                filename: "",
+                                line: 1,
+                                column: 1,
+                                end_line: 1,
+                                end_column: 2,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 2,
+            },
+            generators: [
+                Node {
+                    node: CompClause {
+                        targets: [
+                            Node {
+                                node: Identifier {
+                                    names: [
+                                        Node {
+                                            node: "i",
+                                            filename: "",
+                                            line: 1,
+                                            column: 7,
+                                            end_line: 1,
+                                            end_column: 8,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 8,
+                            },
+                        ],
+                        iter: Node {
+                            node: List(
+                                ListExpr {
+                                    elts: [
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        1,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 13,
+                                            end_line: 1,
+                                            end_column: 14,
+                                        },
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        2,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 16,
+                                            end_line: 1,
+                                            end_column: 17,
+                                        },
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        3,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 19,
+                                            end_line: 1,
+                                            end_column: 20,
+                                        },
+                                    ],
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 12,
+                            end_line: 1,
+                            end_column: 21,
+                        },
+                        ifs: [
+                            Node {
+                                node: Compare(
+                                    Compare {
+                                        left: Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "i",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 25,
+                                                            end_line: 1,
+                                                            end_column: 26,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 25,
+                                            end_line: 1,
+                                            end_column: 26,
+                                        },
+                                        ops: [
+                                            Gt,
+                                        ],
+                                        comparators: [
+                                            Node {
+                                                node: NumberLit(
+                                                    NumberLit {
+                                                        binary_suffix: None,
+                                                        value: Int(
+                                                            2,
+                                                        ),
+                                                    },
+                                                ),
+                                                filename: "",
+                                                line: 1,
+                                                column: 29,
+                                                end_line: 1,
+                                                end_column: 30,
+                                            },
+                                        ],
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 25,
+                                end_line: 1,
+                                end_column: 30,
+                            },
+                        ],
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 30,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 31,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_expr_0.snap
new file mode 100644
index 000000000..356ee9454
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_expr_0.snap
@@ -0,0 +1,64 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[1, 2, 3]\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 2,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                3,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 8,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 9,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_expr_1.snap
new file mode 100644
index 000000000..3401d3c7f
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__list_expr_1.snap
@@ -0,0 +1,90 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"[1, if True: 2, 3]\"####)"
+---
+Node {
+    node: List(
+        ListExpr {
+            elts: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 2,
+                },
+                Node {
+                    node: ListIfItem(
+                        ListIfItemExpr {
+                            if_cond: Node {
+                                node: NameConstantLit(
+                                    NameConstantLit {
+                                        value: True,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 11,
+                            },
+                            exprs: [
+                                Node {
+                                    node: NumberLit(
+                                        NumberLit {
+                                            binary_suffix: None,
+                                            value: Int(
+                                                2,
+                                            ),
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 13,
+                                    end_line: 1,
+                                    end_column: 14,
+                                },
+                            ],
+                            orelse: None,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 14,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                3,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 16,
+                    end_line: 1,
+                    end_column: 17,
+                },
+            ],
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 18,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_0.snap
new file mode 100644
index 000000000..6f3ba2059
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_0.snap
@@ -0,0 +1,75 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"0 < a < 100\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            0,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            ops: [
+                Lt,
+                Lt,
+            ],
+            comparators: [
+                Node {
+                    node: Identifier(
+                        Identifier {
+                            names: [
+                                Node {
+                                    node: "a",
+                                    filename: "",
+                                    line: 1,
+                                    column: 4,
+                                    end_line: 1,
+                                    end_column: 5,
+                                },
+                            ],
+                            pkgpath: "",
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                100,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 8,
+                    end_line: 1,
+                    end_column: 11,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 11,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_1.snap
new file mode 100644
index 000000000..d52a567e1
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_1.snap
@@ -0,0 +1,112 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"0 < a < 100 + a\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            0,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            ops: [
+                Lt,
+                Lt,
+            ],
+            comparators: [
+                Node {
+                    node: Identifier(
+                        Identifier {
+                            names: [
+                                Node {
+                                    node: "a",
+                                    filename: "",
+                                    line: 1,
+                                    column: 4,
+                                    end_line: 1,
+                                    end_column: 5,
+                                },
+                            ],
+                            pkgpath: "",
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+                Node {
+                    node: Binary(
+                        BinaryExpr {
+                            left: Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            100,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 8,
+                                end_line: 1,
+                                end_column: 11,
+                            },
+                            op: Bin(
+                                Add,
+                            ),
+                            right: Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "a",
+                                                filename: "",
+                                                line: 1,
+                                                column: 14,
+                                                end_line: 1,
+                                                end_column: 15,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 14,
+                                end_line: 1,
+                                end_column: 15,
+                            },
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 8,
+                    end_line: 1,
+                    end_column: 15,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 15,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_2.snap
new file mode 100644
index 000000000..b8df91bfb
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_2.snap
@@ -0,0 +1,75 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"100 > a > 0\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            100,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 3,
+            },
+            ops: [
+                Gt,
+                Gt,
+            ],
+            comparators: [
+                Node {
+                    node: Identifier(
+                        Identifier {
+                            names: [
+                                Node {
+                                    node: "a",
+                                    filename: "",
+                                    line: 1,
+                                    column: 6,
+                                    end_line: 1,
+                                    end_column: 7,
+                                },
+                            ],
+                            pkgpath: "",
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 6,
+                    end_line: 1,
+                    end_column: 7,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                0,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 10,
+                    end_line: 1,
+                    end_column: 11,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 11,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_3.snap
new file mode 100644
index 000000000..9bdc33aff
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_3.snap
@@ -0,0 +1,112 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"100 + a > a > 0\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        100,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 3,
+                        },
+                        op: Bin(
+                            Add,
+                        ),
+                        right: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "a",
+                                            filename: "",
+                                            line: 1,
+                                            column: 6,
+                                            end_line: 1,
+                                            end_column: 7,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 6,
+                            end_line: 1,
+                            end_column: 7,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 7,
+            },
+            ops: [
+                Gt,
+                Gt,
+            ],
+            comparators: [
+                Node {
+                    node: Identifier(
+                        Identifier {
+                            names: [
+                                Node {
+                                    node: "a",
+                                    filename: "",
+                                    line: 1,
+                                    column: 10,
+                                    end_line: 1,
+                                    end_column: 11,
+                                },
+                            ],
+                            pkgpath: "",
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 10,
+                    end_line: 1,
+                    end_column: 11,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                0,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 14,
+                    end_line: 1,
+                    end_column: 15,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 15,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_4.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_4.snap
new file mode 100644
index 000000000..4d1179f19
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_4.snap
@@ -0,0 +1,67 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a is b\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            ops: [
+                Is,
+            ],
+            comparators: [
+                Node {
+                    node: Identifier(
+                        Identifier {
+                            names: [
+                                Node {
+                                    node: "b",
+                                    filename: "",
+                                    line: 1,
+                                    column: 5,
+                                    end_line: 1,
+                                    end_column: 6,
+                                },
+                            ],
+                            pkgpath: "",
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 5,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_5.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_5.snap
new file mode 100644
index 000000000..45e278b7b
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_5.snap
@@ -0,0 +1,56 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a is not True\"####)"
+---
+Node {
+    node: Compare(
+        Compare {
+            left: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            ops: [
+                IsNot,
+            ],
+            comparators: [
+                Node {
+                    node: NameConstantLit(
+                        NameConstantLit {
+                            value: True,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 9,
+                    end_line: 1,
+                    end_column: 13,
+                },
+            ],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 13,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_6.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_6.snap
new file mode 100644
index 000000000..5d1e2bbf0
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__logic_expr_6.snap
@@ -0,0 +1,162 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"not False or a > 0 and b is True\"####)"
+---
+Node {
+    node: Binary(
+        BinaryExpr {
+            left: Node {
+                node: Unary(
+                    UnaryExpr {
+                        op: Not,
+                        operand: Node {
+                            node: NameConstantLit(
+                                NameConstantLit {
+                                    value: False,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 4,
+                            end_line: 1,
+                            end_column: 9,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 9,
+            },
+            op: Bin(
+                Or,
+            ),
+            right: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: Compare(
+                                Compare {
+                                    left: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "a",
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 13,
+                                                        end_line: 1,
+                                                        end_column: 14,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 13,
+                                        end_line: 1,
+                                        end_column: 14,
+                                    },
+                                    ops: [
+                                        Gt,
+                                    ],
+                                    comparators: [
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        0,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 17,
+                                            end_line: 1,
+                                            end_column: 18,
+                                        },
+                                    ],
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 13,
+                            end_line: 1,
+                            end_column: 32,
+                        },
+                        op: Bin(
+                            And,
+                        ),
+                        right: Node {
+                            node: Compare(
+                                Compare {
+                                    left: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "b",
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 23,
+                                                        end_line: 1,
+                                                        end_column: 24,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 23,
+                                        end_line: 1,
+                                        end_column: 24,
+                                    },
+                                    ops: [
+                                        Is,
+                                    ],
+                                    comparators: [
+                                        Node {
+                                            node: NameConstantLit(
+                                                NameConstantLit {
+                                                    value: True,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 28,
+                                            end_line: 1,
+                                            end_column: 32,
+                                        },
+                                    ],
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 23,
+                            end_line: 1,
+                            end_column: 32,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 13,
+                end_line: 1,
+                end_column: 32,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 32,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_0.snap
new file mode 100644
index 000000000..7de5ef740
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_0.snap
@@ -0,0 +1,17 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(\"Undefined\")"
+---
+Node {
+    node: NameConstantLit(
+        NameConstantLit {
+            value: Undefined,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 9,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_1.snap
new file mode 100644
index 000000000..7f5c7ef9d
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_1.snap
@@ -0,0 +1,17 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(\"None\")"
+---
+Node {
+    node: NameConstantLit(
+        NameConstantLit {
+            value: None,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 4,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_2.snap
new file mode 100644
index 000000000..2da8eaa4c
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_2.snap
@@ -0,0 +1,17 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(\"True\")"
+---
+Node {
+    node: NameConstantLit(
+        NameConstantLit {
+            value: True,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 4,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_3.snap
new file mode 100644
index 000000000..2f6bf66cc
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__named_literal_expr_3.snap
@@ -0,0 +1,17 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(\"False\")"
+---
+Node {
+    node: NameConstantLit(
+        NameConstantLit {
+            value: False,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__nonstring_literal_expr.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__nonstring_literal_expr.snap
new file mode 100644
index 000000000..565de3ff4
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__nonstring_literal_expr.snap
@@ -0,0 +1,20 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1234\"####)"
+---
+Node {
+    node: NumberLit(
+        NumberLit {
+            binary_suffix: None,
+            value: Int(
+                1234,
+            ),
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 4,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__number_bin_suffix_expr.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__number_bin_suffix_expr.snap
new file mode 100644
index 000000000..5082423ff
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__number_bin_suffix_expr.snap
@@ -0,0 +1,22 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"1234Ki\"####)"
+---
+Node {
+    node: NumberLit(
+        NumberLit {
+            binary_suffix: Some(
+                Ki,
+            ),
+            value: Int(
+                1234,
+            ),
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__parse_joined_string_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__parse_joined_string_0.snap
new file mode 100644
index 000000000..91caf5d34
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__parse_joined_string_0.snap
@@ -0,0 +1,77 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"'${123+200}'\"####)"
+---
+Node {
+    node: JoinedString(
+        JoinedString {
+            is_long_string: false,
+            values: [
+                Node {
+                    node: FormattedValue(
+                        FormattedValue {
+                            is_long_string: false,
+                            value: Node {
+                                node: Binary(
+                                    BinaryExpr {
+                                        left: Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        123,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 3,
+                                            end_line: 1,
+                                            end_column: 6,
+                                        },
+                                        op: Bin(
+                                            Add,
+                                        ),
+                                        right: Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        200,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 7,
+                                            end_line: 1,
+                                            end_column: 10,
+                                        },
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 3,
+                                end_line: 1,
+                                end_column: 10,
+                            },
+                            format_spec: None,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 10,
+                },
+            ],
+            raw_value: "'${123+200}'",
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 12,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__parse_joined_string_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__parse_joined_string_1.snap
new file mode 100644
index 000000000..cf0d73a0d
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__parse_joined_string_1.snap
@@ -0,0 +1,113 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"'abc${a+1}cde'\"####)"
+---
+Node {
+    node: JoinedString(
+        JoinedString {
+            is_long_string: false,
+            values: [
+                Node {
+                    node: StringLit(
+                        StringLit {
+                            is_long_string: false,
+                            raw_value: "abc",
+                            value: "abc",
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 1,
+                },
+                Node {
+                    node: FormattedValue(
+                        FormattedValue {
+                            is_long_string: false,
+                            value: Node {
+                                node: Binary(
+                                    BinaryExpr {
+                                        left: Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "a",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 6,
+                                                            end_line: 1,
+                                                            end_column: 7,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 6,
+                                            end_line: 1,
+                                            end_column: 7,
+                                        },
+                                        op: Bin(
+                                            Add,
+                                        ),
+                                        right: Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        1,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 8,
+                                            end_line: 1,
+                                            end_column: 9,
+                                        },
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 6,
+                                end_line: 1,
+                                end_column: 9,
+                            },
+                            format_spec: None,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 6,
+                    end_line: 1,
+                    end_column: 9,
+                },
+                Node {
+                    node: StringLit(
+                        StringLit {
+                            is_long_string: false,
+                            raw_value: "cde",
+                            value: "cde",
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 1,
+                    end_line: 1,
+                    end_column: 1,
+                },
+            ],
+            raw_value: "'abc${a+1}cde'",
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 14,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_0.snap
new file mode 100644
index 000000000..a028192b6
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_0.snap
@@ -0,0 +1,44 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a.b.c\"####)"
+---
+Node {
+    node: Identifier(
+        Identifier {
+            names: [
+                Node {
+                    node: "a",
+                    filename: "",
+                    line: 1,
+                    column: 0,
+                    end_line: 1,
+                    end_column: 1,
+                },
+                Node {
+                    node: "b",
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+                Node {
+                    node: "c",
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ],
+            pkgpath: "",
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_1.snap
new file mode 100644
index 000000000..df2ad88f0
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_1.snap
@@ -0,0 +1,82 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"'{}'.format(1)\"####)"
+---
+Node {
+    node: Call(
+        CallExpr {
+            func: Node {
+                node: Selector(
+                    SelectorExpr {
+                        value: Node {
+                            node: StringLit(
+                                StringLit {
+                                    is_long_string: false,
+                                    raw_value: "'{}'",
+                                    value: "{}",
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 4,
+                        },
+                        attr: Node {
+                            node: Identifier {
+                                names: [
+                                    Node {
+                                        node: "format",
+                                        filename: "",
+                                        line: 1,
+                                        column: 5,
+                                        end_line: 1,
+                                        end_column: 11,
+                                    },
+                                ],
+                                pkgpath: "",
+                                ctx: Load,
+                            },
+                            filename: "",
+                            line: 1,
+                            column: 5,
+                            end_line: 1,
+                            end_column: 11,
+                        },
+                        ctx: Load,
+                        has_question: false,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 11,
+            },
+            args: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 12,
+                    end_line: 1,
+                    end_column: 13,
+                },
+            ],
+            keywords: [],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 14,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_2.snap
new file mode 100644
index 000000000..45416f506
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__primary_expr_2.snap
@@ -0,0 +1,104 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"str(1).isdigit()\"####)"
+---
+Node {
+    node: Call(
+        CallExpr {
+            func: Node {
+                node: Selector(
+                    SelectorExpr {
+                        value: Node {
+                            node: Call(
+                                CallExpr {
+                                    func: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "str",
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 0,
+                                                        end_line: 1,
+                                                        end_column: 3,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 0,
+                                        end_line: 1,
+                                        end_column: 3,
+                                    },
+                                    args: [
+                                        Node {
+                                            node: NumberLit(
+                                                NumberLit {
+                                                    binary_suffix: None,
+                                                    value: Int(
+                                                        1,
+                                                    ),
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 4,
+                                            end_line: 1,
+                                            end_column: 5,
+                                        },
+                                    ],
+                                    keywords: [],
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                        attr: Node {
+                            node: Identifier {
+                                names: [
+                                    Node {
+                                        node: "isdigit",
+                                        filename: "",
+                                        line: 1,
+                                        column: 7,
+                                        end_line: 1,
+                                        end_column: 14,
+                                    },
+                                ],
+                                pkgpath: "",
+                                ctx: Load,
+                            },
+                            filename: "",
+                            line: 1,
+                            column: 7,
+                            end_line: 1,
+                            end_column: 14,
+                        },
+                        ctx: Load,
+                        has_question: false,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 14,
+            },
+            args: [],
+            keywords: [],
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 16,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_0.snap
new file mode 100644
index 000000000..2da80a01e
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_0.snap
@@ -0,0 +1,119 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"all x in collection {x > 0}\"####)"
+---
+Node {
+    node: Quant(
+        QuantExpr {
+            target: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "collection",
+                                filename: "",
+                                line: 1,
+                                column: 9,
+                                end_line: 1,
+                                end_column: 19,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 9,
+                end_line: 1,
+                end_column: 19,
+            },
+            variables: [
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "x",
+                                filename: "",
+                                line: 1,
+                                column: 4,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ],
+            op: All,
+            test: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 21,
+                                            end_line: 1,
+                                            end_column: 22,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 21,
+                            end_line: 1,
+                            end_column: 22,
+                        },
+                        ops: [
+                            Gt,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            0,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 25,
+                                end_line: 1,
+                                end_column: 26,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 21,
+                end_line: 1,
+                end_column: 26,
+            },
+            if_cond: None,
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 27,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_1.snap
new file mode 100644
index 000000000..2191519ad
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_1.snap
@@ -0,0 +1,119 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"any y in collection {y < 0}\"####)"
+---
+Node {
+    node: Quant(
+        QuantExpr {
+            target: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "collection",
+                                filename: "",
+                                line: 1,
+                                column: 9,
+                                end_line: 1,
+                                end_column: 19,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 9,
+                end_line: 1,
+                end_column: 19,
+            },
+            variables: [
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "y",
+                                filename: "",
+                                line: 1,
+                                column: 4,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ],
+            op: Any,
+            test: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "y",
+                                            filename: "",
+                                            line: 1,
+                                            column: 21,
+                                            end_line: 1,
+                                            end_column: 22,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 21,
+                            end_line: 1,
+                            end_column: 22,
+                        },
+                        ops: [
+                            Lt,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            0,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 25,
+                                end_line: 1,
+                                end_column: 26,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 21,
+                end_line: 1,
+                end_column: 26,
+            },
+            if_cond: None,
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 27,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_2.snap
new file mode 100644
index 000000000..7910878c3
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_2.snap
@@ -0,0 +1,117 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"map x in collection {x + 1}\"####)"
+---
+Node {
+    node: Quant(
+        QuantExpr {
+            target: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "collection",
+                                filename: "",
+                                line: 1,
+                                column: 9,
+                                end_line: 1,
+                                end_column: 19,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 9,
+                end_line: 1,
+                end_column: 19,
+            },
+            variables: [
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "x",
+                                filename: "",
+                                line: 1,
+                                column: 4,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ],
+            op: Map,
+            test: Node {
+                node: Binary(
+                    BinaryExpr {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 21,
+                                            end_line: 1,
+                                            end_column: 22,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 21,
+                            end_line: 1,
+                            end_column: 22,
+                        },
+                        op: Bin(
+                            Add,
+                        ),
+                        right: Node {
+                            node: NumberLit(
+                                NumberLit {
+                                    binary_suffix: None,
+                                    value: Int(
+                                        1,
+                                    ),
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 25,
+                            end_line: 1,
+                            end_column: 26,
+                        },
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 21,
+                end_line: 1,
+                end_column: 26,
+            },
+            if_cond: None,
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 27,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_3.snap
new file mode 100644
index 000000000..272131f54
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_3.snap
@@ -0,0 +1,119 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"filter x in collection {x > 1}\"####)"
+---
+Node {
+    node: Quant(
+        QuantExpr {
+            target: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "collection",
+                                filename: "",
+                                line: 1,
+                                column: 12,
+                                end_line: 1,
+                                end_column: 22,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 12,
+                end_line: 1,
+                end_column: 22,
+            },
+            variables: [
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "x",
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 8,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 8,
+                },
+            ],
+            op: Filter,
+            test: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 24,
+                                            end_line: 1,
+                                            end_column: 25,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 24,
+                            end_line: 1,
+                            end_column: 25,
+                        },
+                        ops: [
+                            Gt,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 28,
+                                end_line: 1,
+                                end_column: 29,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 24,
+                end_line: 1,
+                end_column: 29,
+            },
+            if_cond: None,
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 30,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_4.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_4.snap
new file mode 100644
index 000000000..272131f54
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_4.snap
@@ -0,0 +1,119 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"filter x in collection {x > 1}\"####)"
+---
+Node {
+    node: Quant(
+        QuantExpr {
+            target: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "collection",
+                                filename: "",
+                                line: 1,
+                                column: 12,
+                                end_line: 1,
+                                end_column: 22,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 12,
+                end_line: 1,
+                end_column: 22,
+            },
+            variables: [
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "x",
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 8,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 8,
+                },
+            ],
+            op: Filter,
+            test: Node {
+                node: Compare(
+                    Compare {
+                        left: Node {
+                            node: Identifier(
+                                Identifier {
+                                    names: [
+                                        Node {
+                                            node: "x",
+                                            filename: "",
+                                            line: 1,
+                                            column: 24,
+                                            end_line: 1,
+                                            end_column: 25,
+                                        },
+                                    ],
+                                    pkgpath: "",
+                                    ctx: Load,
+                                },
+                            ),
+                            filename: "",
+                            line: 1,
+                            column: 24,
+                            end_line: 1,
+                            end_column: 25,
+                        },
+                        ops: [
+                            Gt,
+                        ],
+                        comparators: [
+                            Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 28,
+                                end_line: 1,
+                                end_column: 29,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 24,
+                end_line: 1,
+                end_column: 29,
+            },
+            if_cond: None,
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 30,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_5.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_5.snap
new file mode 100644
index 000000000..b80e8af80
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_5.snap
@@ -0,0 +1,213 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"map i, e in [{k1 = \"v1\", k2 = \"v2\"}] { e }\"####)"
+---
+Node {
+    node: Quant(
+        QuantExpr {
+            target: Node {
+                node: List(
+                    ListExpr {
+                        elts: [
+                            Node {
+                                node: Config(
+                                    ConfigExpr {
+                                        items: [
+                                            Node {
+                                                node: ConfigEntry {
+                                                    key: Some(
+                                                        Node {
+                                                            node: Identifier(
+                                                                Identifier {
+                                                                    names: [
+                                                                        Node {
+                                                                            node: "k1",
+                                                                            filename: "",
+                                                                            line: 1,
+                                                                            column: 14,
+                                                                            end_line: 1,
+                                                                            end_column: 16,
+                                                                        },
+                                                                    ],
+                                                                    pkgpath: "",
+                                                                    ctx: Load,
+                                                                },
+                                                            ),
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 14,
+                                                            end_line: 1,
+                                                            end_column: 16,
+                                                        },
+                                                    ),
+                                                    value: Node {
+                                                        node: StringLit(
+                                                            StringLit {
+                                                                is_long_string: false,
+                                                                raw_value: "\"v1\"",
+                                                                value: "v1",
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 19,
+                                                        end_line: 1,
+                                                        end_column: 23,
+                                                    },
+                                                    operation: Override,
+                                                    insert_index: -1,
+                                                },
+                                                filename: "",
+                                                line: 1,
+                                                column: 14,
+                                                end_line: 1,
+                                                end_column: 23,
+                                            },
+                                            Node {
+                                                node: ConfigEntry {
+                                                    key: Some(
+                                                        Node {
+                                                            node: Identifier(
+                                                                Identifier {
+                                                                    names: [
+                                                                        Node {
+                                                                            node: "k2",
+                                                                            filename: "",
+                                                                            line: 1,
+                                                                            column: 25,
+                                                                            end_line: 1,
+                                                                            end_column: 27,
+                                                                        },
+                                                                    ],
+                                                                    pkgpath: "",
+                                                                    ctx: Load,
+                                                                },
+                                                            ),
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 25,
+                                                            end_line: 1,
+                                                            end_column: 27,
+                                                        },
+                                                    ),
+                                                    value: Node {
+                                                        node: StringLit(
+                                                            StringLit {
+                                                                is_long_string: false,
+                                                                raw_value: "\"v2\"",
+                                                                value: "v2",
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 30,
+                                                        end_line: 1,
+                                                        end_column: 34,
+                                                    },
+                                                    operation: Override,
+                                                    insert_index: -1,
+                                                },
+                                                filename: "",
+                                                line: 1,
+                                                column: 25,
+                                                end_line: 1,
+                                                end_column: 34,
+                                            },
+                                        ],
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 13,
+                                end_line: 1,
+                                end_column: 35,
+                            },
+                        ],
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 12,
+                end_line: 1,
+                end_column: 36,
+            },
+            variables: [
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "i",
+                                filename: "",
+                                line: 1,
+                                column: 4,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "e",
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 8,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 8,
+                },
+            ],
+            op: Map,
+            test: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "e",
+                                filename: "",
+                                line: 1,
+                                column: 39,
+                                end_line: 1,
+                                end_column: 40,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 39,
+                end_line: 1,
+                end_column: 40,
+            },
+            if_cond: None,
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 42,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_6.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_6.snap
new file mode 100644
index 000000000..6112b0f13
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__quant_expr_6.snap
@@ -0,0 +1,268 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"map i, e in [{k1 = \"v1\", k2 = \"v2\"}] { e if i > 0 }\"####)"
+---
+Node {
+    node: Quant(
+        QuantExpr {
+            target: Node {
+                node: List(
+                    ListExpr {
+                        elts: [
+                            Node {
+                                node: Config(
+                                    ConfigExpr {
+                                        items: [
+                                            Node {
+                                                node: ConfigEntry {
+                                                    key: Some(
+                                                        Node {
+                                                            node: Identifier(
+                                                                Identifier {
+                                                                    names: [
+                                                                        Node {
+                                                                            node: "k1",
+                                                                            filename: "",
+                                                                            line: 1,
+                                                                            column: 14,
+                                                                            end_line: 1,
+                                                                            end_column: 16,
+                                                                        },
+                                                                    ],
+                                                                    pkgpath: "",
+                                                                    ctx: Load,
+                                                                },
+                                                            ),
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 14,
+                                                            end_line: 1,
+                                                            end_column: 16,
+                                                        },
+                                                    ),
+                                                    value: Node {
+                                                        node: StringLit(
+                                                            StringLit {
+                                                                is_long_string: false,
+                                                                raw_value: "\"v1\"",
+                                                                value: "v1",
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 19,
+                                                        end_line: 1,
+                                                        end_column: 23,
+                                                    },
+                                                    operation: Override,
+                                                    insert_index: -1,
+                                                },
+                                                filename: "",
+                                                line: 1,
+                                                column: 14,
+                                                end_line: 1,
+                                                end_column: 23,
+                                            },
+                                            Node {
+                                                node: ConfigEntry {
+                                                    key: Some(
+                                                        Node {
+                                                            node: Identifier(
+                                                                Identifier {
+                                                                    names: [
+                                                                        Node {
+                                                                            node: "k2",
+                                                                            filename: "",
+                                                                            line: 1,
+                                                                            column: 25,
+                                                                            end_line: 1,
+                                                                            end_column: 27,
+                                                                        },
+                                                                    ],
+                                                                    pkgpath: "",
+                                                                    ctx: Load,
+                                                                },
+                                                            ),
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 25,
+                                                            end_line: 1,
+                                                            end_column: 27,
+                                                        },
+                                                    ),
+                                                    value: Node {
+                                                        node: StringLit(
+                                                            StringLit {
+                                                                is_long_string: false,
+                                                                raw_value: "\"v2\"",
+                                                                value: "v2",
+                                                            },
+                                                        ),
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 30,
+                                                        end_line: 1,
+                                                        end_column: 34,
+                                                    },
+                                                    operation: Override,
+                                                    insert_index: -1,
+                                                },
+                                                filename: "",
+                                                line: 1,
+                                                column: 25,
+                                                end_line: 1,
+                                                end_column: 34,
+                                            },
+                                        ],
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 13,
+                                end_line: 1,
+                                end_column: 35,
+                            },
+                        ],
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 12,
+                end_line: 1,
+                end_column: 36,
+            },
+            variables: [
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "i",
+                                filename: "",
+                                line: 1,
+                                column: 4,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+                Node {
+                    node: Identifier {
+                        names: [
+                            Node {
+                                node: "e",
+                                filename: "",
+                                line: 1,
+                                column: 7,
+                                end_line: 1,
+                                end_column: 8,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                    filename: "",
+                    line: 1,
+                    column: 7,
+                    end_line: 1,
+                    end_column: 8,
+                },
+            ],
+            op: Map,
+            test: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "e",
+                                filename: "",
+                                line: 1,
+                                column: 39,
+                                end_line: 1,
+                                end_column: 40,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 39,
+                end_line: 1,
+                end_column: 40,
+            },
+            if_cond: Some(
+                Node {
+                    node: Compare(
+                        Compare {
+                            left: Node {
+                                node: Identifier(
+                                    Identifier {
+                                        names: [
+                                            Node {
+                                                node: "i",
+                                                filename: "",
+                                                line: 1,
+                                                column: 44,
+                                                end_line: 1,
+                                                end_column: 45,
+                                            },
+                                        ],
+                                        pkgpath: "",
+                                        ctx: Load,
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 44,
+                                end_line: 1,
+                                end_column: 45,
+                            },
+                            ops: [
+                                Gt,
+                            ],
+                            comparators: [
+                                Node {
+                                    node: NumberLit(
+                                        NumberLit {
+                                            binary_suffix: None,
+                                            value: Int(
+                                                0,
+                                            ),
+                                        },
+                                    ),
+                                    filename: "",
+                                    line: 1,
+                                    column: 48,
+                                    end_line: 1,
+                                    end_column: 49,
+                                },
+                            ],
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 44,
+                    end_line: 1,
+                    end_column: 49,
+                },
+            ),
+            ctx: Load,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 51,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_0.snap
new file mode 100644
index 000000000..ca2d929a2
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_0.snap
@@ -0,0 +1,51 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"Schema {}\"####)"
+---
+Node {
+    node: Schema(
+        SchemaExpr {
+            name: Node {
+                node: Identifier {
+                    names: [
+                        Node {
+                            node: "Schema",
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                    ],
+                    pkgpath: "",
+                    ctx: Load,
+                },
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 6,
+            },
+            args: [],
+            kwargs: [],
+            config: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 7,
+                end_line: 1,
+                end_column: 9,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 9,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_1.snap
new file mode 100644
index 000000000..e73ebd8fd
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_1.snap
@@ -0,0 +1,111 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"Schema {k=v}\"####)"
+---
+Node {
+    node: Schema(
+        SchemaExpr {
+            name: Node {
+                node: Identifier {
+                    names: [
+                        Node {
+                            node: "Schema",
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                    ],
+                    pkgpath: "",
+                    ctx: Load,
+                },
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 6,
+            },
+            args: [],
+            kwargs: [],
+            config: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [
+                            Node {
+                                node: ConfigEntry {
+                                    key: Some(
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "k",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 8,
+                                                            end_line: 1,
+                                                            end_column: 9,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 8,
+                                            end_line: 1,
+                                            end_column: 9,
+                                        },
+                                    ),
+                                    value: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "v",
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 10,
+                                                        end_line: 1,
+                                                        end_column: 11,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 10,
+                                        end_line: 1,
+                                        end_column: 11,
+                                    },
+                                    operation: Override,
+                                    insert_index: -1,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 8,
+                                end_line: 1,
+                                end_column: 11,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 7,
+                end_line: 1,
+                end_column: 12,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 12,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_2.snap
new file mode 100644
index 000000000..8d63ad2c7
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_2.snap
@@ -0,0 +1,111 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"Schema () {k=v}\"####)"
+---
+Node {
+    node: Schema(
+        SchemaExpr {
+            name: Node {
+                node: Identifier {
+                    names: [
+                        Node {
+                            node: "Schema",
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                    ],
+                    pkgpath: "",
+                    ctx: Load,
+                },
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 6,
+            },
+            args: [],
+            kwargs: [],
+            config: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [
+                            Node {
+                                node: ConfigEntry {
+                                    key: Some(
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "k",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 11,
+                                                            end_line: 1,
+                                                            end_column: 12,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 11,
+                                            end_line: 1,
+                                            end_column: 12,
+                                        },
+                                    ),
+                                    value: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "v",
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 13,
+                                                        end_line: 1,
+                                                        end_column: 14,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 13,
+                                        end_line: 1,
+                                        end_column: 14,
+                                    },
+                                    operation: Override,
+                                    insert_index: -1,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 11,
+                                end_line: 1,
+                                end_column: 14,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 10,
+                end_line: 1,
+                end_column: 15,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 15,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_3.snap
new file mode 100644
index 000000000..01fcebee5
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_3.snap
@@ -0,0 +1,142 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"Schema (1, 2) {k=v}\"####)"
+---
+Node {
+    node: Schema(
+        SchemaExpr {
+            name: Node {
+                node: Identifier {
+                    names: [
+                        Node {
+                            node: "Schema",
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                    ],
+                    pkgpath: "",
+                    ctx: Load,
+                },
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 6,
+            },
+            args: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 8,
+                    end_line: 1,
+                    end_column: 9,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 11,
+                    end_line: 1,
+                    end_column: 12,
+                },
+            ],
+            kwargs: [],
+            config: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [
+                            Node {
+                                node: ConfigEntry {
+                                    key: Some(
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "k",
+                                                            filename: "",
+                                                            line: 1,
+                                                            column: 15,
+                                                            end_line: 1,
+                                                            end_column: 16,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 1,
+                                            column: 15,
+                                            end_line: 1,
+                                            end_column: 16,
+                                        },
+                                    ),
+                                    value: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "v",
+                                                        filename: "",
+                                                        line: 1,
+                                                        column: 17,
+                                                        end_line: 1,
+                                                        end_column: 18,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 1,
+                                        column: 17,
+                                        end_line: 1,
+                                        end_column: 18,
+                                    },
+                                    operation: Override,
+                                    insert_index: -1,
+                                },
+                                filename: "",
+                                line: 1,
+                                column: 15,
+                                end_line: 1,
+                                end_column: 18,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 14,
+                end_line: 1,
+                end_column: 19,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 19,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_4.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_4.snap
new file mode 100644
index 000000000..9fa625d2e
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__schema_expr_4.snap
@@ -0,0 +1,142 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"Schema (1, 2) {\n    k=v\n}\"####)"
+---
+Node {
+    node: Schema(
+        SchemaExpr {
+            name: Node {
+                node: Identifier {
+                    names: [
+                        Node {
+                            node: "Schema",
+                            filename: "",
+                            line: 1,
+                            column: 0,
+                            end_line: 1,
+                            end_column: 6,
+                        },
+                    ],
+                    pkgpath: "",
+                    ctx: Load,
+                },
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 6,
+            },
+            args: [
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 8,
+                    end_line: 1,
+                    end_column: 9,
+                },
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 11,
+                    end_line: 1,
+                    end_column: 12,
+                },
+            ],
+            kwargs: [],
+            config: Node {
+                node: Config(
+                    ConfigExpr {
+                        items: [
+                            Node {
+                                node: ConfigEntry {
+                                    key: Some(
+                                        Node {
+                                            node: Identifier(
+                                                Identifier {
+                                                    names: [
+                                                        Node {
+                                                            node: "k",
+                                                            filename: "",
+                                                            line: 2,
+                                                            column: 4,
+                                                            end_line: 2,
+                                                            end_column: 5,
+                                                        },
+                                                    ],
+                                                    pkgpath: "",
+                                                    ctx: Load,
+                                                },
+                                            ),
+                                            filename: "",
+                                            line: 2,
+                                            column: 4,
+                                            end_line: 2,
+                                            end_column: 5,
+                                        },
+                                    ),
+                                    value: Node {
+                                        node: Identifier(
+                                            Identifier {
+                                                names: [
+                                                    Node {
+                                                        node: "v",
+                                                        filename: "",
+                                                        line: 2,
+                                                        column: 6,
+                                                        end_line: 2,
+                                                        end_column: 7,
+                                                    },
+                                                ],
+                                                pkgpath: "",
+                                                ctx: Load,
+                                            },
+                                        ),
+                                        filename: "",
+                                        line: 2,
+                                        column: 6,
+                                        end_line: 2,
+                                        end_column: 7,
+                                    },
+                                    operation: Override,
+                                    insert_index: -1,
+                                },
+                                filename: "",
+                                line: 2,
+                                column: 4,
+                                end_line: 2,
+                                end_column: 7,
+                            },
+                        ],
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 14,
+                end_line: 3,
+                end_column: 1,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 3,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__smoke_test_parsing_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__smoke_test_parsing_expr_0.snap
new file mode 100644
index 000000000..896509e1b
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__smoke_test_parsing_expr_0.snap
@@ -0,0 +1,20 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(\"1\\n\")"
+---
+Node {
+    node: NumberLit(
+        NumberLit {
+            binary_suffix: None,
+            value: Int(
+                1,
+            ),
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 1,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__smoke_test_parsing_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__smoke_test_parsing_expr_1.snap
new file mode 100644
index 000000000..2e7abca86
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__smoke_test_parsing_expr_1.snap
@@ -0,0 +1,19 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(\"\\\"1\\\"\\n\")"
+---
+Node {
+    node: StringLit(
+        StringLit {
+            is_long_string: false,
+            raw_value: "\"1\"",
+            value: "1",
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 3,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_0.snap
new file mode 100644
index 000000000..6c8c37538
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_0.snap
@@ -0,0 +1,19 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"'1234'\"####)"
+---
+Node {
+    node: StringLit(
+        StringLit {
+            is_long_string: false,
+            raw_value: "'1234'",
+            value: "1234",
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_1.snap
new file mode 100644
index 000000000..1f108e406
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_1.snap
@@ -0,0 +1,19 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"\"1234\"\"####)"
+---
+Node {
+    node: StringLit(
+        StringLit {
+            is_long_string: false,
+            raw_value: "\"1234\"",
+            value: "1234",
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_2.snap
new file mode 100644
index 000000000..a5f3e2e53
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__string_literal_expr_2.snap
@@ -0,0 +1,19 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"\"1234\\n\"\"####)"
+---
+Node {
+    node: StringLit(
+        StringLit {
+            is_long_string: false,
+            raw_value: "\"1234\\n\"",
+            value: "1234\n",
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 8,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_0.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_0.snap
new file mode 100644
index 000000000..3752cbeac
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_0.snap
@@ -0,0 +1,61 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[0]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                0,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            lower: None,
+            upper: None,
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 4,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_1.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_1.snap
new file mode 100644
index 000000000..9b32e231a
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_1.snap
@@ -0,0 +1,60 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"b[\"k\"]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "b",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: Some(
+                Node {
+                    node: StringLit(
+                        StringLit {
+                            is_long_string: false,
+                            raw_value: "\"k\"",
+                            value: "k",
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ),
+            lower: None,
+            upper: None,
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_10.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_10.snap
new file mode 100644
index 000000000..ce08b1682
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_10.snap
@@ -0,0 +1,73 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[::-1]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: None,
+            upper: None,
+            step: Some(
+                Node {
+                    node: Unary(
+                        UnaryExpr {
+                            op: USub,
+                            operand: Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 5,
+                                end_line: 1,
+                                end_column: 6,
+                            },
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ),
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_11.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_11.snap
new file mode 100644
index 000000000..a5cc8ab34
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_11.snap
@@ -0,0 +1,77 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[1::2]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            upper: None,
+            step: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 5,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ),
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_12.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_12.snap
new file mode 100644
index 000000000..f6cfe4beb
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_12.snap
@@ -0,0 +1,77 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[:2:1]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: None,
+            upper: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ),
+            step: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 5,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ),
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_13.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_13.snap
new file mode 100644
index 000000000..61b668cca
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_13.snap
@@ -0,0 +1,77 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[1:2:]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            upper: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                2,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ),
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_14.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_14.snap
new file mode 100644
index 000000000..001416f3a
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_14.snap
@@ -0,0 +1,93 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[1:3:1]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            upper: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                3,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ),
+            step: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 6,
+                    end_line: 1,
+                    end_column: 7,
+                },
+            ),
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 8,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_2.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_2.snap
new file mode 100644
index 000000000..1c4f15312
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_2.snap
@@ -0,0 +1,61 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"c?[1]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "c",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ),
+            lower: None,
+            upper: None,
+            step: None,
+            ctx: Load,
+            has_question: true,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_3.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_3.snap
new file mode 100644
index 000000000..a288ead99
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_3.snap
@@ -0,0 +1,61 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[1:]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            upper: None,
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_4.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_4.snap
new file mode 100644
index 000000000..d65b89649
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_4.snap
@@ -0,0 +1,73 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[:-1]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: None,
+            upper: Some(
+                Node {
+                    node: Unary(
+                        UnaryExpr {
+                            op: USub,
+                            operand: Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 4,
+                                end_line: 1,
+                                end_column: 5,
+                            },
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 5,
+                },
+            ),
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_5.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_5.snap
new file mode 100644
index 000000000..d095deb1f
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_5.snap
@@ -0,0 +1,85 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[1:len]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            upper: Some(
+                Node {
+                    node: Identifier(
+                        Identifier {
+                            names: [
+                                Node {
+                                    node: "len",
+                                    filename: "",
+                                    line: 1,
+                                    column: 4,
+                                    end_line: 1,
+                                    end_column: 7,
+                                },
+                            ],
+                            pkgpath: "",
+                            ctx: Load,
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 7,
+                },
+            ),
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 8,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_6.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_6.snap
new file mode 100644
index 000000000..16596547b
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_6.snap
@@ -0,0 +1,89 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[0:-1]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                0,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            upper: Some(
+                Node {
+                    node: Unary(
+                        UnaryExpr {
+                            op: USub,
+                            operand: Node {
+                                node: NumberLit(
+                                    NumberLit {
+                                        binary_suffix: None,
+                                        value: Int(
+                                            1,
+                                        ),
+                                    },
+                                ),
+                                filename: "",
+                                line: 1,
+                                column: 5,
+                                end_line: 1,
+                                end_column: 6,
+                            },
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 4,
+                    end_line: 1,
+                    end_column: 6,
+                },
+            ),
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 7,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_7.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_7.snap
new file mode 100644
index 000000000..efdc7b695
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_7.snap
@@ -0,0 +1,45 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[::]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: None,
+            upper: None,
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 5,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_8.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_8.snap
new file mode 100644
index 000000000..6a16c990c
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_8.snap
@@ -0,0 +1,61 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[1::]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                1,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 2,
+                    end_line: 1,
+                    end_column: 3,
+                },
+            ),
+            upper: None,
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_9.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_9.snap
new file mode 100644
index 000000000..14164675c
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__subscript_expr_9.snap
@@ -0,0 +1,61 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"a[:0:]\"####)"
+---
+Node {
+    node: Subscript(
+        Subscript {
+            value: Node {
+                node: Identifier(
+                    Identifier {
+                        names: [
+                            Node {
+                                node: "a",
+                                filename: "",
+                                line: 1,
+                                column: 0,
+                                end_line: 1,
+                                end_column: 1,
+                            },
+                        ],
+                        pkgpath: "",
+                        ctx: Load,
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 0,
+                end_line: 1,
+                end_column: 1,
+            },
+            index: None,
+            lower: None,
+            upper: Some(
+                Node {
+                    node: NumberLit(
+                        NumberLit {
+                            binary_suffix: None,
+                            value: Int(
+                                0,
+                            ),
+                        },
+                    ),
+                    filename: "",
+                    line: 1,
+                    column: 3,
+                    end_line: 1,
+                    end_column: 4,
+                },
+            ),
+            step: None,
+            ctx: Load,
+            has_question: false,
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 6,
+}
+
diff --git a/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__unary_expr.snap b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__unary_expr.snap
new file mode 100644
index 000000000..174b7eeec
--- /dev/null
+++ b/kclvm/parser/src/tests/snapshots/kclvm_parser__tests__expr__unary_expr.snap
@@ -0,0 +1,32 @@
+---
+source: parser/src/tests/expr.rs
+expression: "crate::tests::parsing_expr_string(r####\"+1\"####)"
+---
+Node {
+    node: Unary(
+        UnaryExpr {
+            op: UAdd,
+            operand: Node {
+                node: NumberLit(
+                    NumberLit {
+                        binary_suffix: None,
+                        value: Int(
+                            1,
+                        ),
+                    },
+                ),
+                filename: "",
+                line: 1,
+                column: 1,
+                end_line: 1,
+                end_column: 2,
+            },
+        },
+    ),
+    filename: "",
+    line: 1,
+    column: 0,
+    end_line: 1,
+    end_column: 2,
+}
+