Actual modules and core

1 files changed, 21 insertions, 1 deletions

diff --git a/pkg/lang/vm/value/data.go b/pkg/lang/vm/value/data.go
index 39193d5..1cd258b 100644
--- a/pkg/lang/vm/value/data.go
+++ b/pkg/lang/vm/value/data.go
@@ -116,11 +116,31 @@ func (a ArrayData) Push(m mem.Mem, v Value) error {
 
 	arr := data.(ArrayCell).Get()
 	arr = append(arr, v)
-	m.Set(a.data, ArrayCell(arr))
 
+	if err := m.Set(a.data, ArrayCell(arr)); err != nil {
+		return err
+	}
 	return nil
 }
 
+func (a ArrayData) Pop(m mem.Mem) (Value, error) {
+	data, err := m.Get(a.data)
+	if err != nil {
+		return Value{}, err
+	}
+
+	arr := data.(ArrayCell).Get()
+
+	popped := arr[len(arr)-1]
+	arr = arr[:len(arr)-1]
+
+	if err := m.Set(a.data, ArrayCell(arr)); err != nil {
+		return Value{}, err
+	}
+
+	return popped, nil
+}
+
 type NullData struct{}
 
 func (n NullData) String(_ mem.Mem) (string, error) {