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// Copyright 2019 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus 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 dexon-consensus 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 dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package vm
import (
"strings"
"github.com/dexon-foundation/dexon/accounts/abi"
"github.com/dexon-foundation/dexon/common"
)
var GovernanceContractAddress = common.HexToAddress("63751838d6485578b23e8b051d40861ecc416794")
var NodeInfoOracleAddress = common.HexToAddress("58a7c88ad1f32e7252bebba54def98d3e7b3df11")
var GovernanceABI *OracleContractABI
var NodeInfoOracleABI *OracleContractABI
func init() {
GovernanceABI = NewOracleContractABI(GovernanceABIJSON)
NodeInfoOracleABI = NewOracleContractABI(NodeInfoOracleABIJSON)
}
// OracleContract represent special system contracts written in Go.
type OracleContract interface {
Run(evm *EVM, input []byte, contract *Contract) (ret []byte, err error)
}
// A map representing available system oracle contracts.
var OracleContracts = map[common.Address]OracleContract{
GovernanceContractAddress: &GovernanceContract{},
NodeInfoOracleAddress: &NodeInfoOracleContract{},
}
// Run oracle contract.
func RunOracleContract(oracle OracleContract, evm *EVM, input []byte, contract *Contract) (ret []byte, err error) {
return oracle.Run(evm, input, contract)
}
// OracleContractABI represents ABI information for a given contract.
type OracleContractABI struct {
ABI abi.ABI
Name2Method map[string]abi.Method
Sig2Method map[string]abi.Method
Events map[string]abi.Event
}
// NewOracleContractABI parse the ABI.
func NewOracleContractABI(abiDefinition string) *OracleContractABI {
abiObject, err := abi.JSON(strings.NewReader(abiDefinition))
if err != nil {
panic(err)
}
sig2Method := make(map[string]abi.Method)
name2Method := make(map[string]abi.Method)
for _, method := range abiObject.Methods {
sig2Method[string(method.Id())] = method
name2Method[method.Name] = method
}
events := make(map[string]abi.Event)
for _, event := range abiObject.Events {
events[event.Name] = event
}
return &OracleContractABI{
ABI: abiObject,
Name2Method: name2Method,
Sig2Method: sig2Method,
Events: events,
}
}
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