From 1fb32ebcbcf189032c31e39b7cb5af8e2471ea3a Mon Sep 17 00:00:00 2001
From: zhuliquan <zlqlovecode@foxmail.com>
Date: Sun, 7 Apr 2024 23:56:57 +0800
Subject: [PATCH] fix: fix bug on nil invoke parenthesis

---
 ast/node.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ast/node.go b/ast/node.go
index dcd79ae5..d659d408 100644
--- a/ast/node.go
+++ b/ast/node.go
@@ -54,7 +54,9 @@ func (n *base) SetType(t reflect.Type) {
 
 // SetParenthesis indicate node is surround by bracket
 func (n *base) SetParenthesis() {
-	n.hasParen = true
+	if n != nil {
+		n.hasParen = true
+	}
 }
 
 func (n *base) parenthesis() bool {