Fix crash caused by incorrect assumption about the type of an ast node.

Fixes #1556.

PiperOrigin-RevId: 595503542

pytype/pyi/parser.py

@@ -279,7 +279,11 @@ class _MetadataVisitor(visitor.BaseVisitor):
   def visit_Call(self, node):
     posargs = tuple(evaluator.literal_eval(x) for x in node.args)
     kwargs = {x.arg: evaluator.literal_eval(x.value) for x in node.keywords}
-    return (node.func.id, posargs, kwargs)
+    if isinstance(node.func, astlib.Attribute):
+      func_name = _attribute_to_name(node.func)
+    else:
+      func_name = node.func
+    return (func_name.id, posargs, kwargs)
 
   def visit_Dict(self, node):
     return evaluator.literal_eval(node)

pytype/pyi/parser_test.py

@@ -2885,6 +2885,19 @@ class Foo:
           x: Annotated[int, Signal]
     """)
 
+  def test_attribute_access_and_call(self):
+    self.check("""
+      from typing import Annotated, Any
+      a: Any
+      def f() -> Annotated[list[int], a.b.C(3)]: ...
+    """, """
+      from typing import Annotated, Any, List
+
+      a: Any
+
+      def f() -> Annotated[List[int], {'tag': 'call', 'fn': 'a.b.C', 'posargs': (3,), 'kwargs': {}}]: ...
+    """)
+
 
 class ErrorTest(test_base.UnitTest):
   """Test parser errors."""