From 0a7927ed8257857c8d114387f12844312f6da51c Mon Sep 17 00:00:00 2001
From: Mel <einebeere@gmail.com>
Date: Wed, 18 May 2022 02:19:35 +0200
Subject: Start call stack with at least one frame

---
 pkg/lang/vm/stack.go | 4 ++++
 pkg/lang/vm/vm.go    | 5 +++--
 2 files changed, 7 insertions(+), 2 deletions(-)

(limited to 'pkg/lang/vm')

diff --git a/pkg/lang/vm/stack.go b/pkg/lang/vm/stack.go
index 433c0b7..1d028e5 100644
--- a/pkg/lang/vm/stack.go
+++ b/pkg/lang/vm/stack.go
@@ -4,6 +4,10 @@ import "jinx/pkg/lang/vm/value"
 
 type CallStack []*LocalStack
 
+func NewCallStack() CallStack {
+	return []*LocalStack{{}}
+}
+
 func (cs *CallStack) Push() {
 	*cs = append(*cs, &LocalStack{})
 }
diff --git a/pkg/lang/vm/vm.go b/pkg/lang/vm/vm.go
index 434eae3..a6e1fb8 100644
--- a/pkg/lang/vm/vm.go
+++ b/pkg/lang/vm/vm.go
@@ -13,8 +13,9 @@ type VM struct {
 
 func New(code *code.Code) *VM {
 	return &VM{
-		code: code,
-		pc:   0,
+		code:  code,
+		pc:    0,
+		stack: NewCallStack(),
 	}
 }
 
-- 
cgit 1.4.1