mirror of
https://gitlab.com/pulsechaincom/go-pulse.git
synced 2024-12-23 20:07:16 +00:00
47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package core
|
|
|
|
import "math/big"
|
|
|
|
// GasPool tracks the amount of gas available during
|
|
// execution of the transactions in a block.
|
|
// The zero value is a pool with zero gas available.
|
|
type GasPool big.Int
|
|
|
|
// AddGas makes gas available for execution.
|
|
func (gp *GasPool) AddGas(amount *big.Int) *GasPool {
|
|
i := (*big.Int)(gp)
|
|
i.Add(i, amount)
|
|
return gp
|
|
}
|
|
|
|
// SubGas deducts the given amount from the pool if enough gas is
|
|
// available and returns an error otherwise.
|
|
func (gp *GasPool) SubGas(amount *big.Int) error {
|
|
i := (*big.Int)(gp)
|
|
if i.Cmp(amount) < 0 {
|
|
return ErrGasLimitReached
|
|
}
|
|
i.Sub(i, amount)
|
|
return nil
|
|
}
|
|
|
|
func (gp *GasPool) String() string {
|
|
return (*big.Int)(gp).String()
|
|
}
|