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core, core/state, trie: EIP158, reprice & skip empty account write

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This commit implements EIP158 part 1, 2, 3 & 4

1. If an account is empty it's no longer written to the trie. An empty
  account is defined as (balance=0, nonce=0, storage=0, code=0).
2. Delete an empty account if it's touched
3. An empty account is redefined as either non-existent or empty.
4. Zero value calls and zero value suicides no longer consume the 25k
  reation costs.

params: moved core/config to params

Signed-off-by: Jeffrey Wilcke <jeffrey@ethereum.org>
This commit is contained in:
Jeffrey Wilcke
2016-10-20 13:36:29 +02:00
parent 932d973e36
commit 445feaeef5
74 changed files with 729 additions and 573 deletions
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4
core/state_transition.go
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@ -139,7 +139,7 @@ func (self *StateTransition) from() (vm.Account, error) {
f common.Address
err error
)
if self.env.RuleSet().IsHomestead(self.env.BlockNumber()) {
if self.env.ChainConfig().IsHomestead(self.env.BlockNumber()) {
f, err = self.msg.From()
} else {
f, err = self.msg.FromFrontier()
@ -234,7 +234,7 @@ func (self *StateTransition) TransitionDb() (ret []byte, requiredGas, usedGas *b
msg := self.msg
sender, _ := self.from() // err checked in preCheck
homestead := self.env.RuleSet().IsHomestead(self.env.BlockNumber())
homestead := self.env.ChainConfig().IsHomestead(self.env.BlockNumber())
contractCreation := MessageCreatesContract(msg)
// Pay intrinsic gas
if err = self.useGas(IntrinsicGas(self.data, contractCreation, homestead)); err != nil {