Iterator + start to add core to core codegen

core_ast.cpp

@@ -240,6 +240,7 @@ ast_enum(Token *pos, Ast_Expr *typespec, Ast_Scope *scope) {
     AST_NEW(Decl, ENUM, pos, AST_DECL);
     result->scope = scope;
     result->typespec = typespec;
+    if (typespec) set_flag(typespec->flags, AST_TYPESPEC);
     return result;
 }
 
@@ -248,6 +249,7 @@ ast_var(Token *pos, Ast_Expr *typespec, Intern_String name, Ast_Expr *expr) {
     AST_NEW(Decl, VAR, pos, AST_DECL);
     result->name = name;
     result->typespec = typespec;
+    if (typespec) set_flag(typespec->flags, AST_TYPESPEC);
     result->expr = expr;
     return result;
 }