41 lines
2.0 KiB
Solidity
41 lines
2.0 KiB
Solidity
pragma solidity ^0.4.23;
|
|
|
|
// Abstract contract for the full ERC 20 Token standard
|
|
// https://github.com/ethereum/EIPs/issues/20
|
|
|
|
interface ERC20Token {
|
|
|
|
/// @notice send `_value` token to `_to` from `msg.sender`
|
|
/// @param _to The address of the recipient
|
|
/// @param _value The amount of token to be transferred
|
|
/// @return Whether the transfer was successful or not
|
|
function transfer(address _to, uint256 _value) external returns (bool success);
|
|
|
|
/// @notice `msg.sender` approves `_spender` to spend `_value` tokens
|
|
/// @param _spender The address of the account able to transfer the tokens
|
|
/// @param _value The amount of tokens to be approved for transfer
|
|
/// @return Whether the approval was successful or not
|
|
function approve(address _spender, uint256 _value) external returns (bool success);
|
|
|
|
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
|
|
/// @param _from The address of the sender
|
|
/// @param _to The address of the recipient
|
|
/// @param _value The amount of token to be transferred
|
|
/// @return Whether the transfer was successful or not
|
|
function transferFrom(address _from, address _to, uint256 _value) external returns (bool success);
|
|
|
|
/// @param _owner The address from which the balance will be retrieved
|
|
/// @return The balance
|
|
function balanceOf(address _owner) external view returns (uint256 balance);
|
|
|
|
/// @param _owner The address of the account owning tokens
|
|
/// @param _spender The address of the account able to transfer the tokens
|
|
/// @return Amount of remaining tokens allowed to spent
|
|
function allowance(address _owner, address _spender) external view returns (uint256 remaining);
|
|
|
|
/// total amount of tokens
|
|
function totalSupply() external view returns (uint256 supply);
|
|
|
|
event Transfer(address indexed _from, address indexed _to, uint256 _value);
|
|
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
|
|
} |