From 93261b98c2bc664af30676129def291ff9e8a9ce Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Mon, 21 Jul 2014 11:56:04 +0200
Subject: [PATCH] Changed iterator

---
 ethchain/state.go        | 14 ++------------
 ethchain/state_object.go | 26 ++++++++++++++++++++++++++
 ethchain/vm.go           |  2 +-
 ethpub/types.go          |  4 ++--
 4 files changed, 31 insertions(+), 15 deletions(-)

diff --git a/ethchain/state.go b/ethchain/state.go
index 684b81102..3a9929ecc 100644
--- a/ethchain/state.go
+++ b/ethchain/state.go
@@ -1,7 +1,6 @@
 package ethchain
 
 import (
-	"fmt"
 	"github.com/ethereum/eth-go/ethcrypto"
 	"github.com/ethereum/eth-go/ethtrie"
 	"github.com/ethereum/eth-go/ethutil"
@@ -27,12 +26,6 @@ func NewState(trie *ethtrie.Trie) *State {
 	return &State{trie: trie, stateObjects: make(map[string]*StateObject), manifest: NewManifest()}
 }
 
-// Iterate over each storage address and yield callback
-func (s *State) EachStorage(cb ethtrie.EachCallback) {
-	it := s.trie.NewIterator()
-	it.Each(cb)
-}
-
 // Retrieve the balance from the given address or 0 if object not found
 func (self *State) GetBalance(addr []byte) *big.Int {
 	stateObject := self.GetStateObject(addr)
@@ -214,11 +207,8 @@ func (self *State) Update() {
 
 // Debug stuff
 func (self *State) CreateOutputForDiff() {
-	for addr, stateObject := range self.stateObjects {
-		fmt.Printf("%x %x %x %x\n", addr, stateObject.state.Root(), stateObject.Amount.Bytes(), stateObject.Nonce)
-		stateObject.state.EachStorage(func(addr string, value *ethutil.Value) {
-			fmt.Printf("%x %x\n", addr, value.Bytes())
-		})
+	for _, stateObject := range self.stateObjects {
+		stateObject.CreateOutputForDiff()
 	}
 }
 
diff --git a/ethchain/state_object.go b/ethchain/state_object.go
index 8e7b5fece..184609015 100644
--- a/ethchain/state_object.go
+++ b/ethchain/state_object.go
@@ -151,6 +151,24 @@ func (self *StateObject) setStorage(k []byte, value *ethutil.Value) {
 	*/
 }
 
+// Iterate over each storage address and yield callback
+func (self *StateObject) EachStorage(cb ethtrie.EachCallback) {
+	// First loop over the uncommit/cached values in storage
+	for key, value := range self.storage {
+		// XXX Most iterators Fns as it stands require encoded values
+		encoded := ethutil.NewValue(value.Encode())
+		cb(key, encoded)
+	}
+
+	it := self.state.trie.NewIterator()
+	it.Each(func(key string, value *ethutil.Value) {
+		// If it's cached don't call the callback.
+		if self.storage[key] == nil {
+			cb(key, value)
+		}
+	})
+}
+
 func (self *StateObject) Sync() {
 	/*
 		fmt.Println("############# BEFORE ################")
@@ -303,6 +321,14 @@ func (c *StateObject) Init() Code {
 	return c.initScript
 }
 
+// Debug stuff
+func (self *StateObject) CreateOutputForDiff() {
+	fmt.Printf("%x %x %x %x\n", self.Address(), self.state.Root(), self.Amount.Bytes(), self.Nonce)
+	self.EachStorage(func(addr string, value *ethutil.Value) {
+		fmt.Printf("%x %x\n", addr, value.Bytes())
+	})
+}
+
 //
 // Encoding
 //
diff --git a/ethchain/vm.go b/ethchain/vm.go
index 4fdf8b31a..9d47f950d 100644
--- a/ethchain/vm.go
+++ b/ethchain/vm.go
@@ -158,7 +158,7 @@ func (vm *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
 			switch op {
 			case STOP, RETURN, SUICIDE:
 				closure.object.Sync()
-				closure.object.state.EachStorage(func(key string, value *ethutil.Value) {
+				closure.object.EachStorage(func(key string, value *ethutil.Value) {
 					value.Decode()
 					fmt.Printf("%x %x\n", new(big.Int).SetBytes([]byte(key)).Bytes(), value.Bytes())
 				})
diff --git a/ethpub/types.go b/ethpub/types.go
index 9e5159a4c..52ea5a6bb 100644
--- a/ethpub/types.go
+++ b/ethpub/types.go
@@ -215,7 +215,7 @@ func (c *PStateObject) IsContract() bool {
 }
 
 func (self *PStateObject) EachStorage(cb ethtrie.EachCallback) {
-	self.object.State().EachStorage(cb)
+	self.object.EachStorage(cb)
 }
 
 type KeyVal struct {
@@ -226,7 +226,7 @@ type KeyVal struct {
 func (c *PStateObject) StateKeyVal(asJson bool) interface{} {
 	var values []KeyVal
 	if c.object != nil {
-		c.object.State().EachStorage(func(name string, value *ethutil.Value) {
+		c.object.EachStorage(func(name string, value *ethutil.Value) {
 			values = append(values, KeyVal{name, ethutil.Bytes2Hex(value.Bytes())})
 		})
 	}