From a4e26bf7c2c0cfc65be14ef98af695a0d663609f Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Mon, 23 Jun 2014 11:25:14 +0200
Subject: [PATCH] Added Block do which replays the given block or error

---
 ethereum.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/ethereum.go b/ethereum.go
index a6cb78b1f..77a7c92c7 100644
--- a/ethereum.go
+++ b/ethereum.go
@@ -113,6 +113,24 @@ func New(caps Caps, usePnp bool) (*Ethereum, error) {
 	return ethereum, nil
 }
 
+// Replay block
+func (self *Ethereum) BlockDo(hash []byte) error {
+	block := self.blockChain.GetBlock(hash)
+	if block == nil {
+		return fmt.Errorf("unknown block %x", hash)
+	}
+
+	parent := self.blockChain.GetBlock(block.PrevHash)
+
+	_, err := self.stateManager.ApplyDiff(parent.State(), parent, block)
+	if err != nil {
+		return err
+	}
+
+	return nil
+
+}
+
 func (s *Ethereum) Reactor() *ethutil.ReactorEngine {
 	return s.reactor
 }