137 lines
4.7 KiB
Go
137 lines
4.7 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package params
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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)
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// MainnetChainConfig is the chain parameters to run a node on the main network.
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var MainnetChainConfig = &ChainConfig{
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ChainId: MainNetChainID,
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HomesteadBlock: MainNetHomesteadBlock,
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DAOForkBlock: MainNetDAOForkBlock,
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DAOForkSupport: true,
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EIP150Block: MainNetHomesteadGasRepriceBlock,
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EIP150Hash: MainNetHomesteadGasRepriceHash,
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EIP155Block: MainNetSpuriousDragon,
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EIP158Block: MainNetSpuriousDragon,
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}
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// TestnetChainConfig is the chain parameters to run a node on the test network.
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var TestnetChainConfig = &ChainConfig{
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ChainId: TestNetChainID,
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HomesteadBlock: TestNetHomesteadBlock,
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DAOForkBlock: TestNetDAOForkBlock,
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DAOForkSupport: false,
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EIP150Block: TestNetHomesteadGasRepriceBlock,
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EIP150Hash: TestNetHomesteadGasRepriceHash,
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EIP155Block: TestNetSpuriousDragon,
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EIP158Block: TestNetSpuriousDragon,
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}
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// ChainConfig is the core config which determines the blockchain settings.
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//
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// ChainConfig is stored in the database on a per block basis. This means
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// that any network, identified by its genesis block, can have its own
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// set of configuration options.
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type ChainConfig struct {
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ChainId *big.Int `json:"chainId"` // Chain id identifies the current chain and is used for replay protection
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HomesteadBlock *big.Int `json:"homesteadBlock"` // Homestead switch block (nil = no fork, 0 = already homestead)
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DAOForkBlock *big.Int `json:"daoForkBlock"` // TheDAO hard-fork switch block (nil = no fork)
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DAOForkSupport bool `json:"daoForkSupport"` // Whether the nodes supports or opposes the DAO hard-fork
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// EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150)
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EIP150Block *big.Int `json:"eip150Block"` // EIP150 HF block (nil = no fork)
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EIP150Hash common.Hash `json:"eip150Hash"` // EIP150 HF hash (fast sync aid)
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EIP155Block *big.Int `json:"eip155Block"` // EIP155 HF block
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EIP158Block *big.Int `json:"eip158Block"` // EIP158 HF block
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}
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var (
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TestChainConfig = &ChainConfig{big.NewInt(1), new(big.Int), new(big.Int), true, new(big.Int), common.Hash{}, new(big.Int), new(big.Int)}
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TestRules = TestChainConfig.Rules(new(big.Int))
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)
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// IsHomestead returns whether num is either equal to the homestead block or greater.
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func (c *ChainConfig) IsHomestead(num *big.Int) bool {
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if c.HomesteadBlock == nil || num == nil {
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return false
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}
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return num.Cmp(c.HomesteadBlock) >= 0
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}
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// GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice).
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//
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// The returned GasTable's fields shouldn't, under any circumstances, be changed.
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func (c *ChainConfig) GasTable(num *big.Int) GasTable {
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if num == nil {
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return GasTableHomestead
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}
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switch {
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case c.EIP158Block != nil && num.Cmp(c.EIP158Block) >= 0:
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return GasTableEIP158
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case c.EIP150Block != nil && num.Cmp(c.EIP150Block) >= 0:
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return GasTableHomesteadGasRepriceFork
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default:
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return GasTableHomestead
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}
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}
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func (c *ChainConfig) IsEIP150(num *big.Int) bool {
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if c.EIP150Block == nil || num == nil {
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return false
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}
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return num.Cmp(c.EIP150Block) >= 0
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}
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func (c *ChainConfig) IsEIP155(num *big.Int) bool {
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if c.EIP155Block == nil || num == nil {
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return false
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}
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return num.Cmp(c.EIP155Block) >= 0
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}
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func (c *ChainConfig) IsEIP158(num *big.Int) bool {
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if c.EIP158Block == nil || num == nil {
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return false
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}
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return num.Cmp(c.EIP158Block) >= 0
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}
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// Rules wraps ChainConfig and is merely syntatic sugar or can be used for functions
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// that do not have or require information about the block.
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//
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// Rules is a one time interface meaning that it shouldn't be used in between transition
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// phases.
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type Rules struct {
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ChainId *big.Int
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IsHomestead, IsEIP150, IsEIP155, IsEIP158 bool
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}
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func (c *ChainConfig) Rules(num *big.Int) Rules {
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return Rules{ChainId: new(big.Int).Set(c.ChainId), IsHomestead: c.IsHomestead(num), IsEIP150: c.IsEIP150(num), IsEIP155: c.IsEIP155(num), IsEIP158: c.IsEIP158(num)}
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}
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