erc20

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README 

= ERC 20

[.readme-notice]
NOTE: This document is better viewed at https://docs.openzeppelin.com/contracts/api/token/erc20

This set of interfaces, contracts, and utilities are all related to the https://eips.ethereum.org/EIPS/eip-20[ERC20 Token Standard].

TIP: For an overview of ERC20 tokens and a walk through on how to create a token contract read our xref:ROOT:erc20.adoc[ERC20 guide].

There are a few core contracts that implement the behavior specified in the EIP:

* {IERC20}: the interface all ERC20 implementations should conform to.
* {IERC20Metadata}: the extended ERC20 interface including the <<ERC20-name,`name`>>, <<ERC20-symbol,`symbol`>> and <<ERC20-decimals,`decimals`>> functions.
* {ERC20}: the implementation of the ERC20 interface, including the <<ERC20-name,`name`>>, <<ERC20-symbol,`symbol`>> and <<ERC20-decimals,`decimals`>> optional standard extension to the base interface.

Additionally there are multiple custom extensions, including:

* {ERC20Burnable}: destruction of own tokens.
* {ERC20Capped}: enforcement of a cap to the total supply when minting tokens.
* {ERC20Pausable}: ability to pause token transfers.
* {ERC20Snapshot}: efficient storage of past token balances to be later queried at any point in time.
* {ERC20Permit}: gasless approval of tokens (standardized as ERC2612).
* {ERC20FlashMint}: token level support for flash loans through the minting and burning of ephemeral tokens (standardized as ERC3156).
* {ERC20Votes}: support for voting and vote delegation.
* {ERC20VotesComp}: support for voting and vote delegation (compatible with Compound's token, with uint96 restrictions).
* {ERC20Wrapper}: wrapper to create an ERC20 backed by another ERC20, with deposit and withdraw methods. Useful in conjunction with {ERC20Votes}.

Finally, there are some utilities to interact with ERC20 contracts in various ways.

* {SafeERC20}: a wrapper around the interface that eliminates the need to handle boolean return values.
* {TokenTimelock}: hold tokens for a beneficiary until a specified time.

The following related EIPs are in draft status.

- {ERC20Permit}

NOTE: This core set of contracts is designed to be unopinionated, allowing developers to access the internal functions in ERC20 (such as <<ERC20-_mint-address-uint256-,`_mint`>>) and expose them as external functions in the way they prefer. On the other hand, xref:ROOT:erc20.adoc#Presets[ERC20 Presets] (such as {ERC20PresetMinterPauser}) are designed using opinionated patterns to provide developers with ready to use, deployable contracts.

== Core

{{IERC20}}

{{IERC20Metadata}}

{{ERC20}}

== Extensions

{{ERC20Burnable}}

{{ERC20Capped}}

{{ERC20Pausable}}

{{ERC20Snapshot}}

{{ERC20Votes}}

{{ERC20VotesComp}}

{{ERC20Wrapper}}

{{ERC20FlashMint}}

== Draft EIPs

The following EIPs are still in Draft status. Due to their nature as drafts, the details of these contracts may change and we cannot guarantee their xref:ROOT:releases-stability.adoc[stability]. Minor releases of OpenZeppelin Contracts may contain breaking changes for the contracts in this directory, which will be duly announced in the https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md[changelog]. The EIPs included here are used by projects in production and this may make them less likely to change significantly.

{{ERC20Permit}}

== Presets

These contracts are preconfigured combinations of the above features. They can be used through inheritance or as models to copy and paste their source code.

{{ERC20PresetMinterPauser}}

{{ERC20PresetFixedSupply}}

== Utilities

{{SafeERC20}}

{{TokenTimelock}}

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var Erc20ABI = Erc20MetaData.ABI

Erc20ABI is the input ABI used to generate the binding from. Deprecated: Use Erc20MetaData.ABI instead.

View Source 
var Erc20MetaData = &bind.MetaData{
	ABI: "[{\"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\":[{\"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\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"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\"},{\"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\":[],\"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\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]",
}

Erc20MetaData contains all meta data concerning the Erc20 contract.

Functions

This section is empty.

Types

type Erc20 

type Erc20 struct {
	Erc20Caller     // Read-only binding to the contract
	Erc20Transactor // Write-only binding to the contract
	Erc20Filterer   // Log filterer for contract events
}

Erc20 is an auto generated Go binding around an Ethereum contract.

func NewErc20 

func NewErc20(address common.Address, backend bind.ContractBackend) (*Erc20, error)

NewErc20 creates a new instance of Erc20, bound to a specific deployed contract.

type Erc20Approval 

type Erc20Approval struct {
	Owner   common.Address
	Spender common.Address
	Value   *big.Int
	Raw     types.Log // Blockchain specific contextual infos
}

Erc20Approval represents a Approval event raised by the Erc20 contract.

type Erc20ApprovalIterator 

type Erc20ApprovalIterator struct {
	Event *Erc20Approval // Event containing the contract specifics and raw log
	// contains filtered or unexported fields
}

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.

func (*Erc20ApprovalIterator) Close 

func (it *Erc20ApprovalIterator) Close() error

Close terminates the iteration process, releasing any pending underlying resources.

func (*Erc20ApprovalIterator) Error 

func (it *Erc20ApprovalIterator) Error() error

Error returns any retrieval or parsing error occurred during filtering.

func (*Erc20ApprovalIterator) Next 

func (it *Erc20ApprovalIterator) Next() bool

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.

type Erc20Caller 

type Erc20Caller struct {
	// contains filtered or unexported fields
}

Erc20Caller is an auto generated read-only Go binding around an Ethereum contract.

func NewErc20Caller 

func NewErc20Caller(address common.Address, caller bind.ContractCaller) (*Erc20Caller, error)

NewErc20Caller creates a new read-only instance of Erc20, bound to a specific deployed contract.

func (*Erc20Caller) Allowance 

func (_Erc20 *Erc20Caller) Allowance(opts *bind.CallOpts, owner common.Address, spender common.Address) (*big.Int, error)

Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.

Solidity: function allowance(address owner, address spender) view returns(uint256)

func (*Erc20Caller) BalanceOf 

func (_Erc20 *Erc20Caller) BalanceOf(opts *bind.CallOpts, account common.Address) (*big.Int, error)

BalanceOf is a free data retrieval call binding the contract method 0x70a08231.

Solidity: function balanceOf(address account) view returns(uint256)

func (*Erc20Caller) Decimals 

func (_Erc20 *Erc20Caller) Decimals(opts *bind.CallOpts) (uint8, error)

Decimals is a free data retrieval call binding the contract method 0x313ce567.

Solidity: function decimals() view returns(uint8)

func (*Erc20Caller) Name 

func (_Erc20 *Erc20Caller) Name(opts *bind.CallOpts) (string, error)

Name is a free data retrieval call binding the contract method 0x06fdde03.

Solidity: function name() view returns(string)

func (*Erc20Caller) Symbol 

func (_Erc20 *Erc20Caller) Symbol(opts *bind.CallOpts) (string, error)

Symbol is a free data retrieval call binding the contract method 0x95d89b41.

Solidity: function symbol() view returns(string)

func (*Erc20Caller) TotalSupply 

func (_Erc20 *Erc20Caller) TotalSupply(opts *bind.CallOpts) (*big.Int, error)

TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.

Solidity: function totalSupply() view returns(uint256)

type Erc20CallerRaw 

type Erc20CallerRaw struct {
	Contract *Erc20Caller // Generic read-only contract binding to access the raw methods on
}

Erc20CallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.

func (*Erc20CallerRaw) Call 

func (_Erc20 *Erc20CallerRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error

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.

type Erc20CallerSession 

type Erc20CallerSession struct {
	Contract *Erc20Caller  // Generic contract caller binding to set the session for
	CallOpts bind.CallOpts // Call options to use throughout this session
}

Erc20CallerSession is an auto generated read-only Go binding around an Ethereum contract, with pre-set call options.

func (*Erc20CallerSession) Allowance 

func (_Erc20 *Erc20CallerSession) Allowance(owner common.Address, spender common.Address) (*big.Int, error)

Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.

Solidity: function allowance(address owner, address spender) view returns(uint256)

func (*Erc20CallerSession) BalanceOf 

func (_Erc20 *Erc20CallerSession) BalanceOf(account common.Address) (*big.Int, error)

BalanceOf is a free data retrieval call binding the contract method 0x70a08231.

Solidity: function balanceOf(address account) view returns(uint256)

func (*Erc20CallerSession) Decimals 

func (_Erc20 *Erc20CallerSession) Decimals() (uint8, error)

Decimals is a free data retrieval call binding the contract method 0x313ce567.

Solidity: function decimals() view returns(uint8)

func (*Erc20CallerSession) Name 

func (_Erc20 *Erc20CallerSession) Name() (string, error)

Name is a free data retrieval call binding the contract method 0x06fdde03.

Solidity: function name() view returns(string)

func (*Erc20CallerSession) Symbol 

func (_Erc20 *Erc20CallerSession) Symbol() (string, error)

Symbol is a free data retrieval call binding the contract method 0x95d89b41.

Solidity: function symbol() view returns(string)

func (*Erc20CallerSession) TotalSupply 

func (_Erc20 *Erc20CallerSession) TotalSupply() (*big.Int, error)

TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.

Solidity: function totalSupply() view returns(uint256)

type Erc20Filterer 

type Erc20Filterer struct {
	// contains filtered or unexported fields
}

Erc20Filterer is an auto generated log filtering Go binding around an Ethereum contract events.

func NewErc20Filterer 

func NewErc20Filterer(address common.Address, filterer bind.ContractFilterer) (*Erc20Filterer, error)

NewErc20Filterer creates a new log filterer instance of Erc20, bound to a specific deployed contract.

func (*Erc20Filterer) FilterApproval 

func (_Erc20 *Erc20Filterer) FilterApproval(opts *bind.FilterOpts, owner []common.Address, spender []common.Address) (*Erc20ApprovalIterator, error)

FilterApproval is a free log retrieval operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.

Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)

func (*Erc20Filterer) FilterTransfer 

func (_Erc20 *Erc20Filterer) FilterTransfer(opts *bind.FilterOpts, from []common.Address, to []common.Address) (*Erc20TransferIterator, error)

FilterTransfer is a free log retrieval operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.

Solidity: event Transfer(address indexed from, address indexed to, uint256 value)

func (*Erc20Filterer) ParseApproval 

func (_Erc20 *Erc20Filterer) ParseApproval(log types.Log) (*Erc20Approval, error)

ParseApproval is a log parse operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.

Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)

func (*Erc20Filterer) ParseTransfer 

func (_Erc20 *Erc20Filterer) ParseTransfer(log types.Log) (*Erc20Transfer, error)

ParseTransfer is a log parse operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.

Solidity: event Transfer(address indexed from, address indexed to, uint256 value)

func (*Erc20Filterer) WatchApproval 

func (_Erc20 *Erc20Filterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *Erc20Approval, owner []common.Address, spender []common.Address) (event.Subscription, error)

WatchApproval is a free log subscription operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.

Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)

func (*Erc20Filterer) WatchTransfer 

func (_Erc20 *Erc20Filterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *Erc20Transfer, from []common.Address, to []common.Address) (event.Subscription, error)

WatchTransfer is a free log subscription operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.

Solidity: event Transfer(address indexed from, address indexed to, uint256 value)

type Erc20Raw 

type Erc20Raw struct {
	Contract *Erc20 // Generic contract binding to access the raw methods on
}

Erc20Raw is an auto generated low-level Go binding around an Ethereum contract.

func (*Erc20Raw) Call 

func (_Erc20 *Erc20Raw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error

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 (*Erc20Raw) Transact 

func (_Erc20 *Erc20Raw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error)

Transact invokes the (paid) contract method with params as input values.

func (*Erc20Raw) Transfer 

func (_Erc20 *Erc20Raw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error)

Transfer initiates a plain transaction to move funds to the contract, calling its default method if one is available.

type Erc20Session 

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
}

Erc20Session is an auto generated Go binding around an Ethereum contract, with pre-set call and transact options.

func (*Erc20Session) Allowance 

func (_Erc20 *Erc20Session) Allowance(owner common.Address, spender common.Address) (*big.Int, error)

Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.

Solidity: function allowance(address owner, address spender) view returns(uint256)

func (*Erc20Session) Approve 

func (_Erc20 *Erc20Session) Approve(spender common.Address, amount *big.Int) (*types.Transaction, error)

Approve is a paid mutator transaction binding the contract method 0x095ea7b3.

Solidity: function approve(address spender, uint256 amount) returns(bool)

func (*Erc20Session) BalanceOf 

func (_Erc20 *Erc20Session) BalanceOf(account common.Address) (*big.Int, error)

BalanceOf is a free data retrieval call binding the contract method 0x70a08231.

Solidity: function balanceOf(address account) view returns(uint256)

func (*Erc20Session) Decimals 

func (_Erc20 *Erc20Session) Decimals() (uint8, error)

Decimals is a free data retrieval call binding the contract method 0x313ce567.

Solidity: function decimals() view returns(uint8)

func (*Erc20Session) DecreaseAllowance 

func (_Erc20 *Erc20Session) DecreaseAllowance(spender common.Address, subtractedValue *big.Int) (*types.Transaction, error)

DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.

Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)

func (*Erc20Session) IncreaseAllowance 

func (_Erc20 *Erc20Session) IncreaseAllowance(spender common.Address, addedValue *big.Int) (*types.Transaction, error)

IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.

Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)

func (*Erc20Session) Name 

func (_Erc20 *Erc20Session) Name() (string, error)

Name is a free data retrieval call binding the contract method 0x06fdde03.

Solidity: function name() view returns(string)

func (*Erc20Session) Symbol 

func (_Erc20 *Erc20Session) Symbol() (string, error)

Symbol is a free data retrieval call binding the contract method 0x95d89b41.

Solidity: function symbol() view returns(string)

func (*Erc20Session) TotalSupply 

func (_Erc20 *Erc20Session) TotalSupply() (*big.Int, error)

TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.

Solidity: function totalSupply() view returns(uint256)

func (*Erc20Session) Transfer 

func (_Erc20 *Erc20Session) Transfer(to common.Address, amount *big.Int) (*types.Transaction, error)

Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.

Solidity: function transfer(address to, uint256 amount) returns(bool)

func (*Erc20Session) TransferFrom 

func (_Erc20 *Erc20Session) TransferFrom(from common.Address, to common.Address, amount *big.Int) (*types.Transaction, error)

TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.

Solidity: function transferFrom(address from, address to, uint256 amount) returns(bool)

type Erc20Transactor 

type Erc20Transactor struct {
	// contains filtered or unexported fields
}

Erc20Transactor is an auto generated write-only Go binding around an Ethereum contract.

func NewErc20Transactor 

func NewErc20Transactor(address common.Address, transactor bind.ContractTransactor) (*Erc20Transactor, error)

NewErc20Transactor creates a new write-only instance of Erc20, bound to a specific deployed contract.

func (*Erc20Transactor) Approve 

func (_Erc20 *Erc20Transactor) Approve(opts *bind.TransactOpts, spender common.Address, amount *big.Int) (*types.Transaction, error)

Approve is a paid mutator transaction binding the contract method 0x095ea7b3.

Solidity: function approve(address spender, uint256 amount) returns(bool)

func (*Erc20Transactor) DecreaseAllowance 

func (_Erc20 *Erc20Transactor) DecreaseAllowance(opts *bind.TransactOpts, spender common.Address, subtractedValue *big.Int) (*types.Transaction, error)

DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.

Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)

func (*Erc20Transactor) IncreaseAllowance 

func (_Erc20 *Erc20Transactor) IncreaseAllowance(opts *bind.TransactOpts, spender common.Address, addedValue *big.Int) (*types.Transaction, error)

IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.

Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)

func (*Erc20Transactor) Transfer 

func (_Erc20 *Erc20Transactor) Transfer(opts *bind.TransactOpts, to common.Address, amount *big.Int) (*types.Transaction, error)

Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.

Solidity: function transfer(address to, uint256 amount) returns(bool)

func (*Erc20Transactor) TransferFrom 

func (_Erc20 *Erc20Transactor) TransferFrom(opts *bind.TransactOpts, from common.Address, to common.Address, amount *big.Int) (*types.Transaction, error)

TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.

Solidity: function transferFrom(address from, address to, uint256 amount) returns(bool)

type Erc20TransactorRaw 

type Erc20TransactorRaw struct {
	Contract *Erc20Transactor // Generic write-only contract binding to access the raw methods on
}

Erc20TransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.

func (*Erc20TransactorRaw) Transact 

func (_Erc20 *Erc20TransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error)

Transact invokes the (paid) contract method with params as input values.

func (*Erc20TransactorRaw) Transfer 

func (_Erc20 *Erc20TransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error)

Transfer initiates a plain transaction to move funds to the contract, calling its default method if one is available.

type Erc20TransactorSession 

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
}

Erc20TransactorSession is an auto generated write-only Go binding around an Ethereum contract, with pre-set transact options.

func (*Erc20TransactorSession) Approve 

func (_Erc20 *Erc20TransactorSession) Approve(spender common.Address, amount *big.Int) (*types.Transaction, error)

Approve is a paid mutator transaction binding the contract method 0x095ea7b3.

Solidity: function approve(address spender, uint256 amount) returns(bool)

func (*Erc20TransactorSession) DecreaseAllowance 

func (_Erc20 *Erc20TransactorSession) DecreaseAllowance(spender common.Address, subtractedValue *big.Int) (*types.Transaction, error)

DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.

Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)

func (*Erc20TransactorSession) IncreaseAllowance 

func (_Erc20 *Erc20TransactorSession) IncreaseAllowance(spender common.Address, addedValue *big.Int) (*types.Transaction, error)

IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.

Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)

func (*Erc20TransactorSession) Transfer 

func (_Erc20 *Erc20TransactorSession) Transfer(to common.Address, amount *big.Int) (*types.Transaction, error)

Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.

Solidity: function transfer(address to, uint256 amount) returns(bool)

func (*Erc20TransactorSession) TransferFrom 

func (_Erc20 *Erc20TransactorSession) TransferFrom(from common.Address, to common.Address, amount *big.Int) (*types.Transaction, error)

TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.

Solidity: function transferFrom(address from, address to, uint256 amount) returns(bool)

type Erc20Transfer 

type Erc20Transfer struct {
	From  common.Address
	To    common.Address
	Value *big.Int
	Raw   types.Log // Blockchain specific contextual infos
}

Erc20Transfer represents a Transfer event raised by the Erc20 contract.

type Erc20TransferIterator 

type Erc20TransferIterator struct {
	Event *Erc20Transfer // Event containing the contract specifics and raw log
	// contains filtered or unexported fields
}

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.

func (*Erc20TransferIterator) Close 

func (it *Erc20TransferIterator) Close() error

Close terminates the iteration process, releasing any pending underlying resources.

func (*Erc20TransferIterator) Error 

func (it *Erc20TransferIterator) Error() error

Error returns any retrieval or parsing error occurred during filtering.

func (*Erc20TransferIterator) Next 

func (it *Erc20TransferIterator) Next() bool

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.

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