forked from cerc-io/plugeth
64af2aafda
This implements 1b & 1c of EIP150 by adding a new GasTable which must be returned from the RuleSet config method. This table is used to determine the gas prices for the current epoch. Please note that when the CreateBySuicide gas price is set it is assumed that we're in the new epoch phase. In addition this PR will serve as temporary basis while refactorisation in being done in the EVM64 PR, which will substentially overhaul the gas price code.
62 lines
2.4 KiB
Go
62 lines
2.4 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 core
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import (
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"errors"
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"math/big"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/params"
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)
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var ChainConfigNotFoundErr = errors.New("ChainConfig not found") // general config not found error
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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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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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HomesteadGasRepriceBlock *big.Int `json:"homesteadGasRepriceBlock"` // Homestead gas reprice switch block (nil = no fork)
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VmConfig vm.Config `json:"-"`
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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) params.GasTable {
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if c.HomesteadGasRepriceBlock == nil || num == nil || num.Cmp(c.HomesteadGasRepriceBlock) < 0 {
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return params.GasTableHomestead
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}
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return params.GasTableHomesteadGasRepriceFork
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}
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