function arguments are getting added to the AST!

AST.py

@@ -24,6 +24,9 @@ class NodeType(Enum):
     IdentifierLiteral = "IdentifierLiteral"
     BooleanLiteral = "BooleanLiteral"
 
+    # Helper
+    FunctionParameter = "FunctionParameter"
+
 class Node:
     @abstractmethod
     def type(self) -> NodeType:
@@ -52,6 +55,23 @@ class Program(Node):
             "statements": [{stmt.type().value: stmt.json()} for stmt in self.statements]
         }
     
+# region Helpers
+class FunctionParameter(Expression):
+    def __init__(self, name: str, value_type: str = None) -> None:
+        self.name = name
+        self.value_type = value_type
+
+    def type(self) -> NodeType:
+        return NodeType.FunctionParameter
+    
+    def json(self) -> dict:
+        return {
+            "type": self.type().value,
+            "name": self.name,
+            "value_type": self.value_type
+        }
+# endregion
+    
 # region Literals
 class IntegerLiteral(Expression):
     def __init__(self, value: int = None) -> None:
@@ -164,7 +184,7 @@ class ReturnStatement(Statement):
         }
     
 class FunctionStatement(Statement):
-    def __init__(self, parameters: list = [], body: BlockStatement = None, name: IdentifierLiteral = None, return_type: str = None):
+    def __init__(self, parameters: list[FunctionParameter] = [], body: BlockStatement = None, name: IdentifierLiteral = None, return_type: str = None):
         self.parameters = parameters
         self.body = body
         self.name = name