add strings to parser

1 files changed, 14 insertions, 7 deletions

diff --git a/ast.c b/ast.c
index 2443283..d0a7ffe 100644
--- a/ast.c
+++ b/ast.c
@@ -57,6 +57,15 @@ AstNode astnode_new_symbol(char *s) {
 	};
 }
 
+AstNode astnode_new_string(char *s) {
+	return (AstNode){
+		.ty =AST_STRING,
+		.as = {
+			.str = s
+		}
+	};
+}
+
 void astnode_disp(AstNode *a) {
 	switch (a->ty) {
 	case AST_NUM:
@@ -70,20 +79,18 @@ void astnode_disp(AstNode *a) {
 		}
 		printf(")");
 		break;
-	case AST_SYMBOL:;
+	case AST_SYMBOL:
+	case AST_STRING:
 		printf("%s:%s ",ast_ty_to_str(a->ty), a->as.str);
 		break;
+
 	}
 }
 
 const char* ty_names[] = {
-	"list", "num", "symbol"
+	"list", "num", "symbol", "string"
 };
 const char *ast_ty_to_str(AstTy ty) {
-	if (ty >= AST_TY_LAST || ty < 0) {
-		return "???";
-	} else {
-		return ty_names[ty];
-	}
+	return ty_names[ty];
 }