github.com/annchain/OG@v0.0.9/vm/ovm/config.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package ovm
    18  
    19  import (
    20  	"fmt"
    21  	"math/big"
    22  )
    23  
    24  // ChainConfig is the core config which determines the blockchain settings.
    25  //
    26  // ChainConfig is stored in the database on a per block basis. This means
    27  // that any network, identified by its genesis block, can have its own
    28  // set of configuration options.
    29  type ChainConfig struct {
    30  	ChainID uint32 `json:"chainId"` // chainId identifies the current chain and is used for replay protection
    31  }
    32  
    33  // String implements the fmt.Stringer interface.
    34  func (c *ChainConfig) String() string {
    35  	return fmt.Sprintf("{ChainID: %v}",
    36  		c.ChainID,
    37  	)
    38  }
    39  
    40  // ConfigCompatError is raised if the locally-stored blockchain is initialised with a
    41  // ChainConfig that would alter the past.
    42  type ConfigCompatError struct {
    43  	What string
    44  	// block numbers of the stored and new configurations
    45  	StoredConfig, NewConfig *big.Int
    46  	// the block number to which the local chain must be rewound to correct the error
    47  	RewindTo uint64
    48  }
    49  
    50  func (err *ConfigCompatError) Error() string {
    51  	return fmt.Sprintf("mismatching %s in database (have %d, want %d, rewindto %d)", err.What, err.StoredConfig, err.NewConfig, err.RewindTo)
    52  }
    53  
    54  var TestChainConfig = &ChainConfig{0}
    55  
    56  type OVMConfig struct {
    57  	// NoRecursion disabled Interpreter call, callcode,
    58  	// delegate call and create.
    59  	NoRecursion bool
    60  }