From ca1b2a1a91401255ab4e26cec7eb575b99ecb8da Mon Sep 17 00:00:00 2001 From: obscuren Date: Sat, 3 Jan 2015 17:18:43 +0100 Subject: Changed prev_hash to block_hash, state transition now uses vm env * PREVHASH => BLOCKHASH( N ) * State transition object uses VMEnv as it's query interface * Updated vm.Enviroment has GetHash( n ) for BLOCKHASH instruction * Added GetHash to xeth, core, utils & test environments --- xeth/vm_env.go | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'xeth/vm_env.go') diff --git a/xeth/vm_env.go b/xeth/vm_env.go index d2a21afd5..1470b9eaa 100644 --- a/xeth/vm_env.go +++ b/xeth/vm_env.go @@ -10,6 +10,7 @@ import ( ) type VMEnv struct { + chain *core.ChainManager state *state.StateDB block *types.Block value *big.Int @@ -18,7 +19,7 @@ type VMEnv struct { depth int } -func NewEnv(state *state.StateDB, block *types.Block, value *big.Int, sender []byte) *VMEnv { +func NewEnv(chain *core.ChainManager, state *state.StateDB, block *types.Block, value *big.Int, sender []byte) *VMEnv { return &VMEnv{ state: state, block: block, @@ -33,12 +34,18 @@ func (self *VMEnv) PrevHash() []byte { return self.block.ParentHash() } func (self *VMEnv) Coinbase() []byte { return self.block.Coinbase() } func (self *VMEnv) Time() int64 { return self.block.Time() } func (self *VMEnv) Difficulty() *big.Int { return self.block.Difficulty() } -func (self *VMEnv) BlockHash() []byte { return self.block.Hash() } func (self *VMEnv) GasLimit() *big.Int { return self.block.GasLimit() } func (self *VMEnv) Value() *big.Int { return self.value } func (self *VMEnv) State() *state.StateDB { return self.state } func (self *VMEnv) Depth() int { return self.depth } func (self *VMEnv) SetDepth(i int) { self.depth = i } +func (self *VMEnv) GetHash(n uint64) []byte { + if block := self.chain.GetBlockByNumber(n); block != nil { + return block.Hash() + } + + return nil +} func (self *VMEnv) AddLog(log state.Log) { self.state.AddLog(log) } -- cgit