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Merge pull request #1880 from Gustav-Simonsson/core_transfer

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core, core/vm, cmd/evm: remove redundant balance check
This commit is contained in:
Jeffrey Wilcke 2015-10-08 11:32:30 -07:00
commit bba4dcb72f
6 changed files with 10 additions and 19 deletions
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4
cmd/evm/main.go
View File

@ -217,8 +217,8 @@ func (self *VMEnv) AddLog(log *vm.Log) {
func (self *VMEnv) CanTransfer(from common.Address, balance *big.Int) bool {
return self.state.GetBalance(from).Cmp(balance) >= 0
}
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
return core.Transfer(from, to, amount)
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) {
core.Transfer(from, to, amount)
}
func (self *VMEnv) Call(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {

9
core/execution.go
View File

@ -17,7 +17,6 @@
package core
import (
"errors"
"math/big"
"github.com/ethereum/go-ethereum/common"
@ -108,13 +107,7 @@ func exec(env vm.Environment, caller vm.ContractRef, address, codeAddr *common.A
}
// generic transfer method
func Transfer(from, to vm.Account, amount *big.Int) error {
if from.Balance().Cmp(amount) < 0 {
return errors.New("Insufficient balance in account")
}
func Transfer(from, to vm.Account, amount *big.Int) {
from.SubBalance(amount)
to.AddBalance(amount)
return nil
}

2
core/vm/environment.go
View File

@ -51,7 +51,7 @@ type Environment interface {
// Determines whether it's possible to transact
CanTransfer(from common.Address, balance *big.Int) bool
// Transfers amount from one account to the other
Transfer(from, to Account, amount *big.Int) error
Transfer(from, to Account, amount *big.Int)
// Adds a LOG to the state
AddLog(*Log)
// Adds a structured log to the env

4
core/vm/jit_test.go
View File

@ -152,9 +152,7 @@ func (self *Env) SetDepth(i int) { self.depth = i }
func (self *Env) CanTransfer(from common.Address, balance *big.Int) bool {
return true
}
func (self *Env) Transfer(from, to Account, amount *big.Int) error {
return nil
}
func (self *Env) Transfer(from, to Account, amount *big.Int) {}
func (self *Env) Call(caller ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
return nil, nil
}

4
core/vm_env.go
View File

@ -81,8 +81,8 @@ func (self *VMEnv) SetSnapshot(copy vm.Database) {
self.state.Set(copy.(*state.StateDB))
}
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
return Transfer(from, to, amount)
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) {
Transfer(from, to, amount)
}
func (self *VMEnv) Call(me vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {

6
tests/util.go
View File

@ -209,11 +209,11 @@ func (self *Env) SetSnapshot(copy vm.Database) {
self.state.Set(copy.(*state.StateDB))
}
func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error {
func (self *Env) Transfer(from, to vm.Account, amount *big.Int) {
if self.skipTransfer {
return nil
return
}
return core.Transfer(from, to, amount)
core.Transfer(from, to, amount)
}
func (self *Env) Call(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {