update walk_call_expr for namer

Signed-off-by: shruti2522 <[email protected]>

kclvm/sema/src/namer/node.rs

@@ -1,6 +1,7 @@
 use crate::core::package::ImportInfo;
 use crate::core::symbol::{
-    AttributeSymbol, RuleSymbol, SchemaSymbol, SymbolKind, SymbolRef, TypeAliasSymbol, ValueSymbol,
+    AttributeSymbol, FunctionSymbol, RuleSymbol, SchemaSymbol, SymbolKind, SymbolRef,
+    TypeAliasSymbol, ValueSymbol,
 };
 
 use super::Namer;
@@ -255,8 +256,15 @@ impl<'ctx> MutSelfTypedResultWalker<'ctx> for Namer<'ctx> {
         None
     }
 
-    fn walk_call_expr(&mut self, _call_expr: &'ctx ast::CallExpr) -> Self::Result {
-        None
+    fn walk_call_expr(&mut self, call_expr: &'ctx ast::CallExpr) -> Self::Result {
+        let (start_pos, end_pos): Range = call_expr.func.get_span_pos();
+        let owner = self.ctx.owner_symbols.last().unwrap().clone();
+        let func_name = call_expr.func.node.get_expr_name();
+        let func_ref = self.gs.get_symbols_mut().alloc_function_symbol(
+            FunctionSymbol::new(func_name, start_pos, end_pos, Some(owner), true),
+            self.ctx.get_node_key(&call_expr.func.id),
+        );
+        Some(vec![func_ref])
     }
 
     fn walk_subscript(&mut self, _subscript: &'ctx ast::Subscript) -> Self::Result {