From 83d1dc87f3336d70ccda476627c70c282b7b6e11 Mon Sep 17 00:00:00 2001
From: Mel <einebeere@gmail.com>
Date: Fri, 27 May 2022 23:34:40 +0000
Subject: Function envs and value escaping

---
 pkg/lang/vm/mem/ptr.go | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'pkg/lang/vm/mem/ptr.go')

diff --git a/pkg/lang/vm/mem/ptr.go b/pkg/lang/vm/mem/ptr.go
index 5e3bf3d..f6e3e64 100644
--- a/pkg/lang/vm/mem/ptr.go
+++ b/pkg/lang/vm/mem/ptr.go
@@ -4,7 +4,15 @@ import "strconv"
 
 type Ptr uint64
 
+const (
+	NullPtr Ptr = 0
+)
+
 func (p Ptr) String() string {
 	val := strconv.FormatUint(uint64(p), 10)
 	return "@" + val
 }
+
+func (p Ptr) IsNull() bool {
+	return p == NullPtr
+}
-- 
cgit 1.4.1