Refactor parse_return_statement method to handle nested returns (#1549)

Fixes [Component Output] Custom component does not display output connection points in Langflow UI #1357

src/backend/langflow/interface/custom/code_parser/code_parser.py

@@ -6,6 +6,8 @@
 
 from cachetools import TTLCache, cachedmethod, keys
 from fastapi import HTTPException
+
+
 from langflow.interface.custom.schema import CallableCodeDetails, ClassCodeDetails
 
 
@@ -234,10 +236,28 @@ def parse_function_body(self, node: ast.FunctionDef) -> List[str]:
 
  def parse_return_statement(self, node: ast.FunctionDef) -> bool:
  """
- Parses the return statement of a function or method node.
- """
-
- return any(isinstance(n, ast.Return) for n in node.body)
+ Parses the return statement of a function or method node, including nested returns.
+ """
+
+ def has_return(node):
+ if isinstance(node, ast.Return):
+ return True
+ elif isinstance(node, ast.If):
+ return any(has_return(child) for child in node.body) or any(has_return(child) for child in node.orelse)
+ elif isinstance(node, ast.Try):
+ return (
+ any(has_return(child) for child in node.body)
+ or any(has_return(child) for child in node.handlers)
+ or any(has_return(child) for child in node.finalbody)
+ )
+ elif isinstance(node, (ast.For, ast.While)):
+ return any(has_return(child) for child in node.body) or any(has_return(child) for child in node.orelse)
+ elif isinstance(node, ast.With):
+ return any(has_return(child) for child in node.body)
+ else:
+ return False
+
+ return any(has_return(child) for child in node.body)
 
  def parse_assign(self, stmt):
  """