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go-ethereum/contracts/chequebook/gencode.go

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// 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/>.
// +build none
// This program generates contract/code.go, which contains the chequebook code
// after deployment.
package main
import (
"fmt"
"io/ioutil"
"math/big"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
"github.com/ethereum/go-ethereum/contracts/chequebook/contract"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
)
var (
testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
testAlloc = core.GenesisAlloc{
crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(500000000000)},
}
)
func main() {
backend := backends.NewSimulatedBackend(testAlloc, uint64(100000000))
auth := bind.NewKeyedTransactor(testKey)
// Deploy the contract, get the code.
addr, _, _, err := contract.DeployChequebook(auth, backend)
if err != nil {
panic(err)
}
backend.Commit()
code, err := backend.CodeAt(nil, addr, nil)
if err != nil {
panic(err)
}
if len(code) == 0 {
panic("empty code")
}
// Write the output file.
content := fmt.Sprintf(`package contract
// ContractDeployedCode is used to detect suicides. This constant needs to be
// updated when the contract code is changed.
const ContractDeployedCode = "%#x"
`, code)
if err := ioutil.WriteFile("contract/code.go", []byte(content), 0644); err != nil {
panic(err)
}
}