More work on order independent bindings, A bit more cleanup, Delete some of the null code, no longer valid c code

new_ast.cpp

@@ -226,7 +226,11 @@ struct Ast_Var: Ast_Named{
 };
 
 struct Ast_Const: Ast_Named{
-  Ast_Expr *value;
+  union{
+    Ast *ast;
+    Ast_Expr *value;
+    Ast_Struct *agg;
+  };
 };
 
 struct Ast_Package:Ast{
@@ -460,3 +464,21 @@ ast_package(Token *pos, String name, Array<Ast_Named *> decls){
   For(result->decls) it[0]->parent = result;
   return result;
 }
+
+//-----------------------------------------------------------------------------
+// Utillities
+//-----------------------------------------------------------------------------
+function Ast_Struct *
+const_get_struct(Ast *ast){
+  assert(ast->kind == AST_CONST);
+  Ast_Const *constant = (Ast_Const *)ast;
+  assert(constant->value->kind == AST_STRUCT);
+  return (Ast_Struct *)constant->value;
+}
+
+function Intern_String
+ast_get_name(Ast *ast){
+  assert(is_flag_set(ast->flags, AST_BINDING));
+  auto constant = (Ast_Named *)ast;
+  return constant->name;
+}