From 19c81938763c74228852b3fb759202978a200b48 Mon Sep 17 00:00:00 2001
From: rjl493456442 <garyrong0905@gmail.com>
Date: Thu, 15 Jun 2017 21:49:12 +0800
Subject: [PATCH] core/vm: add a reverted flag in vm contract

which is used to indicate whether state revert happen during
state transition.

if child's revert flag been set, it will also affect its parent
recursively
---
 core/vm/contract.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/core/vm/contract.go b/core/vm/contract.go
index 66748e8215..810a1a8b46 100644
--- a/core/vm/contract.go
+++ b/core/vm/contract.go
@@ -62,6 +62,8 @@ type Contract struct {
 	Args []byte
 
 	DelegateCall bool
+	Reverted     bool // use to represent whether transaction is reverted during state transition
+	// child's reverted field changed will also affect parent.
 }
 
 // NewContract returns a new contract environment for the execution of EVM.
@@ -151,3 +153,12 @@ func (self *Contract) SetCallCode(addr *common.Address, hash common.Hash, code [
 	self.CodeHash = hash
 	self.CodeAddr = addr
 }
+
+// MarkReverted mark current transaction's execution has meet revert.
+func (self *Contract) MarkReverted() {
+	self.Reverted = true
+	// affect parent recursively
+	if parent, ok := self.caller.(*Contract); ok {
+		parent.MarkReverted()
+	}
+}