github.com/XinFinOrg/xdcchain@v1.1.0/contracts/chequebook/gencode.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  // +build none
    18  
    19  // This program generates contract/code.go, which contains the chequebook code
    20  // after deployment.
    21  package main
    22  
    23  import (
    24  	"fmt"
    25  	"io/ioutil"
    26  	"math/big"
    27  
    28  	"github.com/ethereum/go-ethereum/accounts/abi/bind"
    29  	"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
    30  	"github.com/ethereum/go-ethereum/contracts/chequebook/contract"
    31  	"github.com/ethereum/go-ethereum/core"
    32  	"github.com/ethereum/go-ethereum/crypto"
    33  )
    34  
    35  var (
    36  	testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
    37  	testAlloc  = core.GenesisAlloc{
    38  		crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(500000000000)},
    39  	}
    40  )
    41  
    42  func main() {
    43  	backend := backends.NewSimulatedBackend(testAlloc, uint64(100000000))
    44  	auth := bind.NewKeyedTransactor(testKey)
    45  
    46  	// Deploy the contract, get the code.
    47  	addr, _, _, err := contract.DeployChequebook(auth, backend)
    48  	if err != nil {
    49  		panic(err)
    50  	}
    51  	backend.Commit()
    52  	code, err := backend.CodeAt(nil, addr, nil)
    53  	if err != nil {
    54  		panic(err)
    55  	}
    56  	if len(code) == 0 {
    57  		panic("empty code")
    58  	}
    59  
    60  	// Write the output file.
    61  	content := fmt.Sprintf(`package contract
    62  
    63  // ContractDeployedCode is used to detect suicides. This constant needs to be
    64  // updated when the contract code is changed.
    65  const ContractDeployedCode = "%#x"
    66  `, code)
    67  	if err := ioutil.WriteFile("contract/code.go", []byte(content), 0644); err != nil {
    68  		panic(err)
    69  	}
    70  }