mirror of https://github.com/ethereum/go-ethereum
Péter Szilágyi
9 years ago
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// 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 bind |
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import "github.com/ethereum/go-ethereum/accounts/abi" |
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// tmplData is the data structure required to fill the binding template.
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type tmplData struct { |
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Package string // Name of the package to place the generated file in
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Contracts map[string]*tmplContract // List of contracts to generate into this file
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} |
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// tmplContract contains the data needed to generate an individual contract binding.
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type tmplContract struct { |
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Type string // Type name of the main contract binding
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InputABI string // JSON ABI used as the input to generate the binding from
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InputBin string // Optional EVM bytecode used to denetare deploy code from
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Constructor abi.Method // Contract constructor for deploy parametrization
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Calls map[string]*tmplMethod // Contract calls that only read state data
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Transacts map[string]*tmplMethod // Contract calls that write state data
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} |
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// tmplMethod is a wrapper around an abi.Method that contains a few preprocessed
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// and cached data fields.
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type tmplMethod struct { |
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Original abi.Method // Original method as parsed by the abi package
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Normalized abi.Method // Normalized version of the parsed method (capitalized names, non-anonymous args/returns)
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Structured bool // Whether the returns should be accumulated into a contract
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} |
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// tmplSource is the Go source template use to generate the contract binding
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// based on.
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const tmplSource = ` |
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// This file is an automatically generated Go binding. Do not modify as any
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// change will likely be lost upon the next re-generation!
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package {{.Package}} |
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{{range $contract := .Contracts}} |
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// {{.Type}}ABI is the input ABI used to generate the binding from.
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const {{.Type}}ABI = ` + "`" + `{{.InputABI}}` + "`" + ` |
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{{if .InputBin}} |
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// {{.Type}}Bin is the compiled bytecode used for deploying new contracts.
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const {{.Type}}Bin = ` + "`" + `{{.InputBin}}` + "`" + ` |
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// Deploy{{.Type}} deploys a new Ethereum contract, binding an instance of {{.Type}} to it.
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func Deploy{{.Type}}(auth *bind.TransactOpts, backend bind.ContractBackend {{range .Constructor.Inputs}}, {{.Name}} {{bindtype .Type}}{{end}}) (common.Address, *types.Transaction, *{{.Type}}, error) { |
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parsed, err := abi.JSON(strings.NewReader({{.Type}}ABI)) |
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if err != nil { |
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return common.Address{}, nil, nil, err |
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} |
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address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex({{.Type}}Bin), backend {{range .Constructor.Inputs}}, {{.Name}}{{end}}) |
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if err != nil { |
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return common.Address{}, nil, nil, err |
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} |
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return address, tx, &{{.Type}}{ {{.Type}}Caller: {{.Type}}Caller{contract: contract}, {{.Type}}Transactor: {{.Type}}Transactor{contract: contract} }, nil |
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} |
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{{end}} |
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// {{.Type}} is an auto generated Go binding around an Ethereum contract.
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type {{.Type}} struct { |
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{{.Type}}Caller // Read-only binding to the contract
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{{.Type}}Transactor // Write-only binding to the contract
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} |
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// {{.Type}}Caller is an auto generated read-only Go binding around an Ethereum contract.
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type {{.Type}}Caller struct { |
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contract *bind.BoundContract // Generic contract wrapper for the low level calls
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} |
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// {{.Type}}Transactor is an auto generated write-only Go binding around an Ethereum contract.
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type {{.Type}}Transactor struct { |
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contract *bind.BoundContract // Generic contract wrapper for the low level calls
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} |
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// {{.Type}}Session is an auto generated Go binding around an Ethereum contract,
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// with pre-set call and transact options.
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type {{.Type}}Session struct { |
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Contract *{{.Type}} // Generic contract binding to set the session for
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CallOpts bind.CallOpts // Call options to use throughout this session
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TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
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} |
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// {{.Type}}CallerSession is an auto generated read-only Go binding around an Ethereum contract,
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// with pre-set call options.
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type {{.Type}}CallerSession struct { |
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Contract *{{.Type}}Caller // Generic contract caller binding to set the session for
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CallOpts bind.CallOpts // Call options to use throughout this session
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} |
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// {{.Type}}TransactorSession is an auto generated write-only Go binding around an Ethereum contract,
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// with pre-set transact options.
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type {{.Type}}TransactorSession struct { |
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Contract *{{.Type}}Transactor // Generic contract transactor binding to set the session for
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TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
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} |
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// New{{.Type}} creates a new instance of {{.Type}}, bound to a specific deployed contract.
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func New{{.Type}}(address common.Address, backend bind.ContractBackend) (*{{.Type}}, error) { |
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contract, err := bind{{.Type}}(address, backend.(bind.ContractCaller), backend.(bind.ContractTransactor)) |
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if err != nil { |
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return nil, err |
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} |
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return &{{.Type}}{ {{.Type}}Caller: {{.Type}}Caller{contract: contract}, {{.Type}}Transactor: {{.Type}}Transactor{contract: contract} }, nil |
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} |
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// New{{.Type}}Caller creates a new read-only instance of {{.Type}}, bound to a specific deployed contract.
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func New{{.Type}}Caller(address common.Address, caller bind.ContractCaller) (*{{.Type}}Caller, error) { |
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contract, err := bind{{.Type}}(address, caller, nil) |
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if err != nil { |
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return nil, err |
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} |
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return &{{.Type}}Caller{contract: contract}, nil |
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} |
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// New{{.Type}}Transactor creates a new write-only instance of {{.Type}}, bound to a specific deployed contract.
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func New{{.Type}}Transactor(address common.Address, transactor bind.ContractTransactor) (*{{.Type}}Transactor, error) { |
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contract, err := bind{{.Type}}(address, nil, transactor) |
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if err != nil { |
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return nil, err |
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} |
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return &{{.Type}}Transactor{contract: contract}, nil |
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} |
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// bind{{.Type}} binds a generic wrapper to an already deployed contract.
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func bind{{.Type}}(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor) (*bind.BoundContract, error) { |
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parsed, err := abi.JSON(strings.NewReader({{.Type}}ABI)) |
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if err != nil { |
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return nil, err |
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} |
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return bind.NewBoundContract(address, parsed, caller, transactor), nil |
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} |
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{{range .Calls}} |
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{{if .Structured}} |
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// {{.Normalized.Name}}Result is the result of the {{.Normalized.Name}} invocation."
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type {{.Normalized.Name}}Result struct { |
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{{range .Normalized.Outputs}}{{.Name}} {{bindtype .Type}} |
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{{end}} |
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} |
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{{end}} |
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// {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.Id}}.
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//
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// Solidity: {{.Original.String}}
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func (_{{$contract.Type}} *{{$contract.Type}}Caller) {{.Normalized.Name}}(opts *bind.CallOpts {{range .Normalized.Inputs}}, {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}*{{.Normalized.Name}}Result,{{else}}{{range .Normalized.Outputs}}{{bindtype .Type}},{{end}}{{end}} error) { |
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var ( |
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{{if .Structured}}ret = new(*{{.Normalized.Name}}Result){{else}}{{range $i, $_ := .Normalized.Outputs}}ret{{$i}} = new({{bindtype .Type}}) |
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{{end}}{{end}} |
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) |
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out := {{if .Structured}}ret{{else}}{{if eq (len .Normalized.Outputs) 1}}ret0{{else}}[]interface{}{ |
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{{range $i, $_ := .Normalized.Outputs}}ret{{$i}}, |
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{{end}} |
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}{{end}}{{end}} |
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err := _{{$contract.Type}}.contract.Call(opts, out, "{{.Original.Name}}" {{range .Normalized.Inputs}}, {{.Name}}{{end}}) |
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return {{if .Structured}}*ret,{{else}}{{range $i, $_ := .Normalized.Outputs}}*ret{{$i}},{{end}}{{end}} err |
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} |
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// {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.Id}}.
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//
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// Solidity: {{.Original.String}}
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func (_{{$contract.Type}} *{{$contract.Type}}Session) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}*{{.Normalized.Name}}Result, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type}},{{end}} {{end}} error) { |
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return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.CallOpts {{range .Normalized.Inputs}}, {{.Name}}{{end}}) |
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} |
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// {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.Id}}.
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//
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// Solidity: {{.Original.String}}
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func (_{{$contract.Type}} *{{$contract.Type}}CallerSession) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}*{{.Normalized.Name}}Result, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type}},{{end}} {{end}} error) { |
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return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.CallOpts {{range .Normalized.Inputs}}, {{.Name}}{{end}}) |
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} |
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{{end}} |
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{{range .Transacts}} |
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// {{.Normalized.Name}} is a paid mutator transaction binding the contract method 0x{{printf "%x" .Original.Id}}.
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//
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// Solidity: {{.Original.String}}
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func (_{{$contract.Type}} *{{$contract.Type}}Transactor) {{.Normalized.Name}}(opts *bind.TransactOpts {{range .Normalized.Inputs}}, {{.Name}} {{bindtype .Type}} {{end}}) (*types.Transaction, error) { |
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return _{{$contract.Type}}.contract.Transact(opts, "{{.Original.Name}}" {{range .Normalized.Inputs}}, {{.Name}}{{end}}) |
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} |
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// {{.Normalized.Name}} is a paid mutator transaction binding the contract method 0x{{printf "%x" .Original.Id}}.
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//
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// Solidity: {{.Original.String}}
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func (_{{$contract.Type}} *{{$contract.Type}}Session) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) (*types.Transaction, error) { |
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return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.TransactOpts {{range $i, $_ := .Normalized.Inputs}}, {{.Name}}{{end}}) |
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} |
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// {{.Normalized.Name}} is a paid mutator transaction binding the contract method 0x{{printf "%x" .Original.Id}}.
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//
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// Solidity: {{.Original.String}}
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func (_{{$contract.Type}} *{{$contract.Type}}TransactorSession) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) (*types.Transaction, error) { |
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return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.TransactOpts {{range $i, $_ := .Normalized.Inputs}}, {{.Name}}{{end}}) |
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} |
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{{end}} |
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{{end}} |
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` |
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