From 7b519eba0dd6b0efd48ee5e9bc602d48bba000e8 Mon Sep 17 00:00:00 2001
From: BlockChainDev <kevtheappdev@gmail.com>
Date: Sat, 16 Mar 2019 22:09:04 +0000
Subject: [PATCH] Add RET Opcode

---
 pkg/vm/vm_ops_flow.go | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 pkg/vm/vm_ops_flow.go

diff --git a/pkg/vm/vm_ops_flow.go b/pkg/vm/vm_ops_flow.go
new file mode 100644
index 000000000..7a90638b0
--- /dev/null
+++ b/pkg/vm/vm_ops_flow.go
@@ -0,0 +1,25 @@
+package vm
+
+import (
+	"github.com/CityOfZion/neo-go/pkg/vm/stack"
+)
+
+// Flow control
+
+// RET Returns from the current context
+// Returns HALT if there are nomore context's to run
+func RET(op stack.Instruction, ctx *stack.Context, istack *stack.Invocation) (Vmstate, error) {
+
+	// Pop current context from the Inovation stack
+	err := istack.RemoveCurrentContext()
+	if err != nil {
+		return FAULT, err
+	}
+
+	// If there are no-more context's left to ran, then we HALT
+	if istack.Len() == 0 {
+		return HALT, nil
+	}
+
+	return NONE, nil
+}