sync-block/erc20/erc20.go

// Code generated - DO NOT EDIT.
// This file is a generated binding and any manual changes will be lost.

package erc20

import (
	"errors"
	"fmt"
	"math/big"
	"reflect"
	"strings"

	ethereum "github.com/ethereum/go-ethereum"
	"github.com/ethereum/go-ethereum/accounts/abi"
	"github.com/ethereum/go-ethereum/accounts/abi/bind"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/event"
)

// Reference imports to suppress errors if they are not otherwise used.
var (
	_ = big.NewInt
	_ = strings.NewReader
	_ = ethereum.NotFound
	_ = bind.Bind
	_ = common.Big1
	_ = types.BloomLookup
	_ = event.NewSubscription
)

// Erc20ABI is the input ABI used to generate the binding from.
const Erc20ABI = "[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"name_\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"symbol_\",\"type\":\"string\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]"

// Erc20Bin is the compiled bytecode used for deploying new contracts.
var Erc20Bin = "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// DeployErc20 deploys a new Ethereum contract, binding an instance of Erc20 to it.
func DeployErc20(auth *bind.TransactOpts, backend bind.ContractBackend, name_ string, symbol_ string) (common.Address, *types.Transaction, *Erc20, error) {
	parsed, err := abi.JSON(strings.NewReader(Erc20ABI))
	if err != nil {
		return common.Address{}, nil, nil, err
	}

	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(Erc20Bin), backend, name_, symbol_)
	if err != nil {
		return common.Address{}, nil, nil, err
	}
	return address, tx, &Erc20{Erc20Caller: Erc20Caller{contract: contract}, Erc20Transactor: Erc20Transactor{contract: contract}, Erc20Filterer: Erc20Filterer{contract: contract}}, nil
}

// Erc20 is an auto generated Go binding around an Ethereum contract.
type Erc20 struct {
	Erc20Caller     // Read-only binding to the contract
	Erc20Transactor // Write-only binding to the contract
	Erc20Filterer   // Log filterer for contract events
}

// Erc20Caller is an auto generated read-only Go binding around an Ethereum contract.
type Erc20Caller struct {
	contract *bind.BoundContract // Generic contract wrapper for the low level calls
}

// Erc20Transactor is an auto generated write-only Go binding around an Ethereum contract.
type Erc20Transactor struct {
	contract *bind.BoundContract // Generic contract wrapper for the low level calls
}

// Erc20Filterer is an auto generated log filtering Go binding around an Ethereum contract events.
type Erc20Filterer struct {
	contract *bind.BoundContract // Generic contract wrapper for the low level calls
}

// Erc20Session is an auto generated Go binding around an Ethereum contract,
// with pre-set call and transact options.
type Erc20Session struct {
	Contract     *Erc20            // Generic contract binding to set the session for
	CallOpts     bind.CallOpts     // Call options to use throughout this session
	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
}

// Erc20CallerSession is an auto generated read-only Go binding around an Ethereum contract,
// with pre-set call options.
type Erc20CallerSession struct {
	Contract *Erc20Caller  // Generic contract caller binding to set the session for
	CallOpts bind.CallOpts // Call options to use throughout this session
}

// Erc20TransactorSession is an auto generated write-only Go binding around an Ethereum contract,
// with pre-set transact options.
type Erc20TransactorSession struct {
	Contract     *Erc20Transactor  // Generic contract transactor binding to set the session for
	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
}

// Erc20Raw is an auto generated low-level Go binding around an Ethereum contract.
type Erc20Raw struct {
	Contract *Erc20 // Generic contract binding to access the raw methods on
}

// Erc20CallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
type Erc20CallerRaw struct {
	Contract *Erc20Caller // Generic read-only contract binding to access the raw methods on
}

// Erc20TransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
type Erc20TransactorRaw struct {
	Contract *Erc20Transactor // Generic write-only contract binding to access the raw methods on
}

// NewErc20 creates a new instance of Erc20, bound to a specific deployed contract.
func NewErc20(address common.Address, backend bind.ContractBackend) (*Erc20, error) {
	contract, err := bindErc20(address, backend, backend, backend)
	if err != nil {
		return nil, err
	}
	return &Erc20{Erc20Caller: Erc20Caller{contract: contract}, Erc20Transactor: Erc20Transactor{contract: contract}, Erc20Filterer: Erc20Filterer{contract: contract}}, nil
}

// indirect recursively dereferences the value until it either gets the value
// or finds a big.Int
func indirect(v reflect.Value) reflect.Value {
	if v.Kind() == reflect.Ptr && v.Elem().Type() != reflect.TypeOf(big.Int{}) {
		return indirect(v.Elem())
	}
	return v
}

// setSlice attempts to assign src to dst when slices are not assignable by default
// e.g. src: [][]byte -> dst: [][15]byte
// setSlice ignores if we cannot copy all of src' elements.
func setSlice(dst, src reflect.Value) error {
	slice := reflect.MakeSlice(dst.Type(), src.Len(), src.Len())
	for i := 0; i < src.Len(); i++ {
		if src.Index(i).Kind() == reflect.Struct {
			if err := set(slice.Index(i), src.Index(i)); err != nil {
				return err
			}
		} else {
			// e.g. [][32]uint8 to []common.Hash
			if err := set(slice.Index(i), src.Index(i)); err != nil {
				return err
			}
		}
	}
	if dst.CanSet() {
		dst.Set(slice)
		return nil
	}
	return errors.New("Cannot set slice, destination not settable")
}

func setArray(dst, src reflect.Value) error {
	if src.Kind() == reflect.Ptr {
		return set(dst, indirect(src))
	}
	array := reflect.New(dst.Type()).Elem()
	min := src.Len()
	if src.Len() > dst.Len() {
		min = dst.Len()
	}
	for i := 0; i < min; i++ {
		if err := set(array.Index(i), src.Index(i)); err != nil {
			return err
		}
	}
	if dst.CanSet() {
		dst.Set(array)
		return nil
	}
	return errors.New("Cannot set array, destination not settable")
}

func setStruct(dst, src reflect.Value) error {
	for i := 0; i < src.NumField(); i++ {
		srcField := src.Field(i)
		dstField := dst.Field(i)
		if !dstField.IsValid() || !srcField.IsValid() {
			return fmt.Errorf("Could not find src field: %v value: %v in destination", srcField.Type().Name(), srcField)
		}
		if err := set(dstField, srcField); err != nil {
			return err
		}
	}
	return nil
}

func set(dst, src reflect.Value) error {
	dstType, srcType := dst.Type(), src.Type()
	switch {
	case dstType.Kind() == reflect.Interface && dst.Elem().IsValid():
		return set(dst.Elem(), src)
	case dstType.Kind() == reflect.Ptr && dstType.Elem() != reflect.TypeOf(big.Int{}):
		return set(dst.Elem(), src)
	case srcType.AssignableTo(dstType) && dst.CanSet():
		dst.Set(src)
	case dstType.Kind() == reflect.Slice && srcType.Kind() == reflect.Slice && dst.CanSet():
		return setSlice(dst, src)
	case dstType.Kind() == reflect.Array:
		return setArray(dst, src)
	case dstType.Kind() == reflect.Struct:
		return setStruct(dst, src)
	default:
		return fmt.Errorf("abi: cannot unmarshal %v in to %v", src.Type(), dst.Type())
	}
	return nil
}

func ConvertType(in interface{}, proto interface{}) interface{} {
	protoType := reflect.TypeOf(proto)
	if reflect.TypeOf(in).ConvertibleTo(protoType) {
		return reflect.ValueOf(in).Convert(protoType).Interface()
	}
	// Use set as a last ditch effort
	if err := set(reflect.ValueOf(proto), reflect.ValueOf(in)); err != nil {
		panic(err)
	}
	return proto
}

// NewErc20Caller creates a new read-only instance of Erc20, bound to a specific deployed contract.
func NewErc20Caller(address common.Address, caller bind.ContractCaller) (*Erc20Caller, error) {
	contract, err := bindErc20(address, caller, nil, nil)
	if err != nil {
		return nil, err
	}
	return &Erc20Caller{contract: contract}, nil
}

// NewErc20Transactor creates a new write-only instance of Erc20, bound to a specific deployed contract.
func NewErc20Transactor(address common.Address, transactor bind.ContractTransactor) (*Erc20Transactor, error) {
	contract, err := bindErc20(address, nil, transactor, nil)
	if err != nil {
		return nil, err
	}
	return &Erc20Transactor{contract: contract}, nil
}

// NewErc20Filterer creates a new log filterer instance of Erc20, bound to a specific deployed contract.
func NewErc20Filterer(address common.Address, filterer bind.ContractFilterer) (*Erc20Filterer, error) {
	contract, err := bindErc20(address, nil, nil, filterer)
	if err != nil {
		return nil, err
	}
	return &Erc20Filterer{contract: contract}, nil
}

// bindErc20 binds a generic wrapper to an already deployed contract.
func bindErc20(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
	parsed, err := abi.JSON(strings.NewReader(Erc20ABI))
	if err != nil {
		return nil, err
	}

	return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
}

// Call invokes the (constant) contract method with params as input values and
// sets the output to result. The result type might be a single field for simple
// returns, a slice of interfaces for anonymous returns and a struct for named
// returns.
func (_Erc20 *Erc20Raw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
	return _Erc20.Contract.Erc20Caller.contract.Call(opts, result, method, params...)
}

// Transfer initiates a plain transaction to move funds to the contract, calling
// its default method if one is available.
func (_Erc20 *Erc20Raw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
	return _Erc20.Contract.Erc20Transactor.contract.Transfer(opts)
}

// Transact invokes the (paid) contract method with params as input values.
func (_Erc20 *Erc20Raw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
	return _Erc20.Contract.Erc20Transactor.contract.Transact(opts, method, params...)
}

// Call invokes the (constant) contract method with params as input values and
// sets the output to result. The result type might be a single field for simple
// returns, a slice of interfaces for anonymous returns and a struct for named
// returns.
func (_Erc20 *Erc20CallerRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
	return _Erc20.Contract.contract.Call(opts, result, method, params...)
}

// Transfer initiates a plain transaction to move funds to the contract, calling
// its default method if one is available.
func (_Erc20 *Erc20TransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
	return _Erc20.Contract.contract.Transfer(opts)
}

// Transact invokes the (paid) contract method with params as input values.
func (_Erc20 *Erc20TransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
	return _Erc20.Contract.contract.Transact(opts, method, params...)
}

// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
//
// Solidity: function allowance(address owner, address spender) view returns(uint256)
func (_Erc20 *Erc20Caller) Allowance(opts *bind.CallOpts, owner common.Address, spender common.Address) (*big.Int, error) {
	var out []interface{}
	err := _Erc20.contract.Call(opts, &out, "allowance", owner, spender)

	if err != nil {
		return *new(*big.Int), err
	}

	out0 := *ConvertType(out[0], new(*big.Int)).(**big.Int)

	return out0, err

}

// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
//
// Solidity: function allowance(address owner, address spender) view returns(uint256)
func (_Erc20 *Erc20Session) Allowance(owner common.Address, spender common.Address) (*big.Int, error) {
	return _Erc20.Contract.Allowance(&_Erc20.CallOpts, owner, spender)
}

// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
//
// Solidity: function allowance(address owner, address spender) view returns(uint256)
func (_Erc20 *Erc20CallerSession) Allowance(owner common.Address, spender common.Address) (*big.Int, error) {
	return _Erc20.Contract.Allowance(&_Erc20.CallOpts, owner, spender)
}

// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
//
// Solidity: function balanceOf(address account) view returns(uint256)
func (_Erc20 *Erc20Caller) BalanceOf(opts *bind.CallOpts, account common.Address) (*big.Int, error) {
	var out []interface{}
	err := _Erc20.contract.Call(opts, &out, "balanceOf", account)

	if err != nil {
		return *new(*big.Int), err
	}

	out0 := *ConvertType(out[0], new(*big.Int)).(**big.Int)

	return out0, err

}

// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
//
// Solidity: function balanceOf(address account) view returns(uint256)
func (_Erc20 *Erc20Session) BalanceOf(account common.Address) (*big.Int, error) {
	return _Erc20.Contract.BalanceOf(&_Erc20.CallOpts, account)
}

// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
//
// Solidity: function balanceOf(address account) view returns(uint256)
func (_Erc20 *Erc20CallerSession) BalanceOf(account common.Address) (*big.Int, error) {
	return _Erc20.Contract.BalanceOf(&_Erc20.CallOpts, account)
}

// Decimals is a free data retrieval call binding the contract method 0x313ce567.
//
// Solidity: function decimals() view returns(uint8)
func (_Erc20 *Erc20Caller) Decimals(opts *bind.CallOpts) (uint8, error) {
	var out []interface{}
	err := _Erc20.contract.Call(opts, &out, "decimals")

	if err != nil {
		return *new(uint8), err
	}

	out0 := *ConvertType(out[0], new(uint8)).(*uint8)

	return out0, err

}

// Decimals is a free data retrieval call binding the contract method 0x313ce567.
//
// Solidity: function decimals() view returns(uint8)
func (_Erc20 *Erc20Session) Decimals() (uint8, error) {
	return _Erc20.Contract.Decimals(&_Erc20.CallOpts)
}

// Decimals is a free data retrieval call binding the contract method 0x313ce567.
//
// Solidity: function decimals() view returns(uint8)
func (_Erc20 *Erc20CallerSession) Decimals() (uint8, error) {
	return _Erc20.Contract.Decimals(&_Erc20.CallOpts)
}

// Name is a free data retrieval call binding the contract method 0x06fdde03.
//
// Solidity: function name() view returns(string)
func (_Erc20 *Erc20Caller) Name(opts *bind.CallOpts) (string, error) {
	var out []interface{}
	err := _Erc20.contract.Call(opts, &out, "name")

	if err != nil {
		return *new(string), err
	}

	out0 := *ConvertType(out[0], new(string)).(*string)

	return out0, err

}

// Name is a free data retrieval call binding the contract method 0x06fdde03.
//
// Solidity: function name() view returns(string)
func (_Erc20 *Erc20Session) Name() (string, error) {
	return _Erc20.Contract.Name(&_Erc20.CallOpts)
}

// Name is a free data retrieval call binding the contract method 0x06fdde03.
//
// Solidity: function name() view returns(string)
func (_Erc20 *Erc20CallerSession) Name() (string, error) {
	return _Erc20.Contract.Name(&_Erc20.CallOpts)
}

// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
//
// Solidity: function symbol() view returns(string)
func (_Erc20 *Erc20Caller) Symbol(opts *bind.CallOpts) (string, error) {
	var out []interface{}
	err := _Erc20.contract.Call(opts, &out, "symbol")

	if err != nil {
		return *new(string), err
	}

	out0 := *ConvertType(out[0], new(string)).(*string)

	return out0, err

}

// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
//
// Solidity: function symbol() view returns(string)
func (_Erc20 *Erc20Session) Symbol() (string, error) {
	return _Erc20.Contract.Symbol(&_Erc20.CallOpts)
}

// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
//
// Solidity: function symbol() view returns(string)
func (_Erc20 *Erc20CallerSession) Symbol() (string, error) {
	return _Erc20.Contract.Symbol(&_Erc20.CallOpts)
}

// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
//
// Solidity: function totalSupply() view returns(uint256)
func (_Erc20 *Erc20Caller) TotalSupply(opts *bind.CallOpts) (*big.Int, error) {
	var out []interface{}
	err := _Erc20.contract.Call(opts, &out, "totalSupply")

	if err != nil {
		return *new(*big.Int), err
	}

	out0 := *ConvertType(out[0], new(*big.Int)).(**big.Int)

	return out0, err

}

// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
//
// Solidity: function totalSupply() view returns(uint256)
func (_Erc20 *Erc20Session) TotalSupply() (*big.Int, error) {
	return _Erc20.Contract.TotalSupply(&_Erc20.CallOpts)
}

// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
//
// Solidity: function totalSupply() view returns(uint256)
func (_Erc20 *Erc20CallerSession) TotalSupply() (*big.Int, error) {
	return _Erc20.Contract.TotalSupply(&_Erc20.CallOpts)
}

// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
//
// Solidity: function approve(address spender, uint256 amount) returns(bool)
func (_Erc20 *Erc20Transactor) Approve(opts *bind.TransactOpts, spender common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.contract.Transact(opts, "approve", spender, amount)
}

// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
//
// Solidity: function approve(address spender, uint256 amount) returns(bool)
func (_Erc20 *Erc20Session) Approve(spender common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.Approve(&_Erc20.TransactOpts, spender, amount)
}

// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
//
// Solidity: function approve(address spender, uint256 amount) returns(bool)
func (_Erc20 *Erc20TransactorSession) Approve(spender common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.Approve(&_Erc20.TransactOpts, spender, amount)
}

// DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.
//
// Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)
func (_Erc20 *Erc20Transactor) DecreaseAllowance(opts *bind.TransactOpts, spender common.Address, subtractedValue *big.Int) (*types.Transaction, error) {
	return _Erc20.contract.Transact(opts, "decreaseAllowance", spender, subtractedValue)
}

// DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.
//
// Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)
func (_Erc20 *Erc20Session) DecreaseAllowance(spender common.Address, subtractedValue *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.DecreaseAllowance(&_Erc20.TransactOpts, spender, subtractedValue)
}

// DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.
//
// Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)
func (_Erc20 *Erc20TransactorSession) DecreaseAllowance(spender common.Address, subtractedValue *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.DecreaseAllowance(&_Erc20.TransactOpts, spender, subtractedValue)
}

// IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.
//
// Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)
func (_Erc20 *Erc20Transactor) IncreaseAllowance(opts *bind.TransactOpts, spender common.Address, addedValue *big.Int) (*types.Transaction, error) {
	return _Erc20.contract.Transact(opts, "increaseAllowance", spender, addedValue)
}

// IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.
//
// Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)
func (_Erc20 *Erc20Session) IncreaseAllowance(spender common.Address, addedValue *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.IncreaseAllowance(&_Erc20.TransactOpts, spender, addedValue)
}

// IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.
//
// Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)
func (_Erc20 *Erc20TransactorSession) IncreaseAllowance(spender common.Address, addedValue *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.IncreaseAllowance(&_Erc20.TransactOpts, spender, addedValue)
}

// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
//
// Solidity: function transfer(address recipient, uint256 amount) returns(bool)
func (_Erc20 *Erc20Transactor) Transfer(opts *bind.TransactOpts, recipient common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.contract.Transact(opts, "transfer", recipient, amount)
}

// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
//
// Solidity: function transfer(address recipient, uint256 amount) returns(bool)
func (_Erc20 *Erc20Session) Transfer(recipient common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.Transfer(&_Erc20.TransactOpts, recipient, amount)
}

// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
//
// Solidity: function transfer(address recipient, uint256 amount) returns(bool)
func (_Erc20 *Erc20TransactorSession) Transfer(recipient common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.Transfer(&_Erc20.TransactOpts, recipient, amount)
}

// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
//
// Solidity: function transferFrom(address sender, address recipient, uint256 amount) returns(bool)
func (_Erc20 *Erc20Transactor) TransferFrom(opts *bind.TransactOpts, sender common.Address, recipient common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.contract.Transact(opts, "transferFrom", sender, recipient, amount)
}

// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
//
// Solidity: function transferFrom(address sender, address recipient, uint256 amount) returns(bool)
func (_Erc20 *Erc20Session) TransferFrom(sender common.Address, recipient common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.TransferFrom(&_Erc20.TransactOpts, sender, recipient, amount)
}

// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
//
// Solidity: function transferFrom(address sender, address recipient, uint256 amount) returns(bool)
func (_Erc20 *Erc20TransactorSession) TransferFrom(sender common.Address, recipient common.Address, amount *big.Int) (*types.Transaction, error) {
	return _Erc20.Contract.TransferFrom(&_Erc20.TransactOpts, sender, recipient, amount)
}

// Erc20ApprovalIterator is returned from FilterApproval and is used to iterate over the raw logs and unpacked data for Approval events raised by the Erc20 contract.
type Erc20ApprovalIterator struct {
	Event *Erc20Approval // Event containing the contract specifics and raw log

	contract *bind.BoundContract // Generic contract to use for unpacking event data
	event    string              // Event name to use for unpacking event data

	logs chan types.Log        // Log channel receiving the found contract events
	sub  ethereum.Subscription // Subscription for errors, completion and termination
	done bool                  // Whether the subscription completed delivering logs
	fail error                 // Occurred error to stop iteration
}

// Next advances the iterator to the subsequent event, returning whether there
// are any more events found. In case of a retrieval or parsing error, false is
// returned and Error() can be queried for the exact failure.
func (it *Erc20ApprovalIterator) Next() bool {
	// If the iterator failed, stop iterating
	if it.fail != nil {
		return false
	}
	// If the iterator completed, deliver directly whatever's available
	if it.done {
		select {
		case log := <-it.logs:
			it.Event = new(Erc20Approval)
			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
				it.fail = err
				return false
			}
			it.Event.Raw = log
			return true

		default:
			return false
		}
	}
	// Iterator still in progress, wait for either a data or an error event
	select {
	case log := <-it.logs:
		it.Event = new(Erc20Approval)
		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
			it.fail = err
			return false
		}
		it.Event.Raw = log
		return true

	case err := <-it.sub.Err():
		it.done = true
		it.fail = err
		return it.Next()
	}
}

// Error returns any retrieval or parsing error occurred during filtering.
func (it *Erc20ApprovalIterator) Error() error {
	return it.fail
}

// Close terminates the iteration process, releasing any pending underlying
// resources.
func (it *Erc20ApprovalIterator) Close() error {
	it.sub.Unsubscribe()
	return nil
}

// Erc20Approval represents a Approval event raised by the Erc20 contract.
type Erc20Approval struct {
	Owner   common.Address
	Spender common.Address
	Value   *big.Int
	Raw     types.Log // Blockchain specific contextual infos
}

// FilterApproval is a free log retrieval operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
//
// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
func (_Erc20 *Erc20Filterer) FilterApproval(opts *bind.FilterOpts, owner []common.Address, spender []common.Address) (*Erc20ApprovalIterator, error) {

	var ownerRule []interface{}
	for _, ownerItem := range owner {
		ownerRule = append(ownerRule, ownerItem)
	}
	var spenderRule []interface{}
	for _, spenderItem := range spender {
		spenderRule = append(spenderRule, spenderItem)
	}

	logs, sub, err := _Erc20.contract.FilterLogs(opts, "Approval", ownerRule, spenderRule)
	if err != nil {
		return nil, err
	}
	return &Erc20ApprovalIterator{contract: _Erc20.contract, event: "Approval", logs: logs, sub: sub}, nil
}

// WatchApproval is a free log subscription operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
//
// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
func (_Erc20 *Erc20Filterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *Erc20Approval, owner []common.Address, spender []common.Address) (event.Subscription, error) {

	var ownerRule []interface{}
	for _, ownerItem := range owner {
		ownerRule = append(ownerRule, ownerItem)
	}
	var spenderRule []interface{}
	for _, spenderItem := range spender {
		spenderRule = append(spenderRule, spenderItem)
	}

	logs, sub, err := _Erc20.contract.WatchLogs(opts, "Approval", ownerRule, spenderRule)
	if err != nil {
		return nil, err
	}
	return event.NewSubscription(func(quit <-chan struct{}) error {
		defer sub.Unsubscribe()
		for {
			select {
			case log := <-logs:
				// New log arrived, parse the event and forward to the user
				event := new(Erc20Approval)
				if err := _Erc20.contract.UnpackLog(event, "Approval", log); err != nil {
					return err
				}
				event.Raw = log

				select {
				case sink <- event:
				case err := <-sub.Err():
					return err
				case <-quit:
					return nil
				}
			case err := <-sub.Err():
				return err
			case <-quit:
				return nil
			}
		}
	}), nil
}

// ParseApproval is a log parse operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
//
// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
func (_Erc20 *Erc20Filterer) ParseApproval(log types.Log) (*Erc20Approval, error) {
	event := new(Erc20Approval)
	if err := _Erc20.contract.UnpackLog(event, "Approval", log); err != nil {
		return nil, err
	}
	event.Raw = log
	return event, nil
}

// Erc20TransferIterator is returned from FilterTransfer and is used to iterate over the raw logs and unpacked data for Transfer events raised by the Erc20 contract.
type Erc20TransferIterator struct {
	Event *Erc20Transfer // Event containing the contract specifics and raw log

	contract *bind.BoundContract // Generic contract to use for unpacking event data
	event    string              // Event name to use for unpacking event data

	logs chan types.Log        // Log channel receiving the found contract events
	sub  ethereum.Subscription // Subscription for errors, completion and termination
	done bool                  // Whether the subscription completed delivering logs
	fail error                 // Occurred error to stop iteration
}

// Next advances the iterator to the subsequent event, returning whether there
// are any more events found. In case of a retrieval or parsing error, false is
// returned and Error() can be queried for the exact failure.
func (it *Erc20TransferIterator) Next() bool {
	// If the iterator failed, stop iterating
	if it.fail != nil {
		return false
	}
	// If the iterator completed, deliver directly whatever's available
	if it.done {
		select {
		case log := <-it.logs:
			it.Event = new(Erc20Transfer)
			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
				it.fail = err
				return false
			}
			it.Event.Raw = log
			return true

		default:
			return false
		}
	}
	// Iterator still in progress, wait for either a data or an error event
	select {
	case log := <-it.logs:
		it.Event = new(Erc20Transfer)
		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
			it.fail = err
			return false
		}
		it.Event.Raw = log
		return true

	case err := <-it.sub.Err():
		it.done = true
		it.fail = err
		return it.Next()
	}
}

// Error returns any retrieval or parsing error occurred during filtering.
func (it *Erc20TransferIterator) Error() error {
	return it.fail
}

// Close terminates the iteration process, releasing any pending underlying
// resources.
func (it *Erc20TransferIterator) Close() error {
	it.sub.Unsubscribe()
	return nil
}

// Erc20Transfer represents a Transfer event raised by the Erc20 contract.
type Erc20Transfer struct {
	From  common.Address
	To    common.Address
	Value *big.Int
	Raw   types.Log // Blockchain specific contextual infos
}

// FilterTransfer is a free log retrieval operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
//
// Solidity: event Transfer(address indexed from, address indexed to, uint256 value)
func (_Erc20 *Erc20Filterer) FilterTransfer(opts *bind.FilterOpts, from []common.Address, to []common.Address) (*Erc20TransferIterator, error) {

	var fromRule []interface{}
	for _, fromItem := range from {
		fromRule = append(fromRule, fromItem)
	}
	var toRule []interface{}
	for _, toItem := range to {
		toRule = append(toRule, toItem)
	}

	logs, sub, err := _Erc20.contract.FilterLogs(opts, "Transfer", fromRule, toRule)
	if err != nil {
		return nil, err
	}
	return &Erc20TransferIterator{contract: _Erc20.contract, event: "Transfer", logs: logs, sub: sub}, nil
}

// WatchTransfer is a free log subscription operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
//
// Solidity: event Transfer(address indexed from, address indexed to, uint256 value)
func (_Erc20 *Erc20Filterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *Erc20Transfer, from []common.Address, to []common.Address) (event.Subscription, error) {

	var fromRule []interface{}
	for _, fromItem := range from {
		fromRule = append(fromRule, fromItem)
	}
	var toRule []interface{}
	for _, toItem := range to {
		toRule = append(toRule, toItem)
	}

	logs, sub, err := _Erc20.contract.WatchLogs(opts, "Transfer", fromRule, toRule)
	if err != nil {
		return nil, err
	}
	return event.NewSubscription(func(quit <-chan struct{}) error {
		defer sub.Unsubscribe()
		for {
			select {
			case log := <-logs:
				// New log arrived, parse the event and forward to the user
				event := new(Erc20Transfer)
				if err := _Erc20.contract.UnpackLog(event, "Transfer", log); err != nil {
					return err
				}
				event.Raw = log

				select {
				case sink <- event:
				case err := <-sub.Err():
					return err
				case <-quit:
					return nil
				}
			case err := <-sub.Err():
				return err
			case <-quit:
				return nil
			}
		}
	}), nil
}

// ParseTransfer is a log parse operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
//
// Solidity: event Transfer(address indexed from, address indexed to, uint256 value)
func (_Erc20 *Erc20Filterer) ParseTransfer(log types.Log) (*Erc20Transfer, error) {
	event := new(Erc20Transfer)
	if err := _Erc20.contract.UnpackLog(event, "Transfer", log); err != nil {
		return nil, err
	}
	event.Raw = log
	return event, nil
}