47 lines
1.7 KiB
Go
47 lines
1.7 KiB
Go
// Copyright 2016 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 (
|
|
"errors"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
)
|
|
|
|
var ChainConfigNotFoundErr = errors.New("ChainConfig not found") // general config not found error
|
|
|
|
// ChainConfig is the core config which determines the blockchain settings.
|
|
//
|
|
// ChainConfig is stored in the database on a per block basis. This means
|
|
// that any network, identified by its genesis block, can have its own
|
|
// set of configuration options.
|
|
type ChainConfig struct {
|
|
HomesteadBlock *big.Int `json:"homesteadBlock"` // homestead switch block (0 = already homestead)
|
|
DAOForkBlock *big.Int `json:"daoForkBlock"` // TheDAO hard-fork block (nil = no fork)
|
|
|
|
VmConfig vm.Config `json:"-"`
|
|
}
|
|
|
|
// IsHomestead returns whether num is either equal to the homestead block or greater.
|
|
func (c *ChainConfig) IsHomestead(num *big.Int) bool {
|
|
if c.HomesteadBlock == nil || num == nil {
|
|
return false
|
|
}
|
|
return num.Cmp(c.HomesteadBlock) >= 0
|
|
}
|