56 lines
2.1 KiB
Solidity
56 lines
2.1 KiB
Solidity
|
pragma solidity ^0.5.17;
|
||
|
|
|
||
|
|
|
||
|
|
// Interface for ERC900: https://eips.ethereum.org/EIPS/eip-900
|
||
|
|
interface ERC900 {
|
||
|
|
event Staked(address indexed user, uint256 amount, uint256 total, bytes data);
|
||
|
|
event Unstaked(address indexed user, uint256 amount, uint256 total, bytes data);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Stake a certain amount of tokens
|
||
|
|
* @param _amount Amount of tokens to be staked
|
||
|
|
* @param _data Optional data that can be used to add signalling information in more complex staking applications
|
||
|
|
*/
|
||
|
|
function stake(uint256 _amount, bytes calldata _data) external;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Stake a certain amount of tokens in favor of someone
|
||
|
|
* @param _user Address to stake an amount of tokens to
|
||
|
|
* @param _amount Amount of tokens to be staked
|
||
|
|
* @param _data Optional data that can be used to add signalling information in more complex staking applications
|
||
|
|
*/
|
||
|
|
function stakeFor(address _user, uint256 _amount, bytes calldata _data) external;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Unstake a certain amount of tokens
|
||
|
|
* @param _amount Amount of tokens to be unstaked
|
||
|
|
* @param _data Optional data that can be used to add signalling information in more complex staking applications
|
||
|
|
*/
|
||
|
|
function unstake(uint256 _amount, bytes calldata _data) external;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Tell the total amount of tokens staked for an address
|
||
|
|
* @param _addr Address querying the total amount of tokens staked for
|
||
|
|
* @return Total amount of tokens staked for an address
|
||
|
|
*/
|
||
|
|
function totalStakedFor(address _addr) external view returns (uint256);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Tell the total amount of tokens staked
|
||
|
|
* @return Total amount of tokens staked
|
||
|
|
*/
|
||
|
|
function totalStaked() external view returns (uint256);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @dev Tell the address of the token used for staking
|
||
|
|
* @return Address of the token used for staking
|
||
|
|
*/
|
||
|
|
function token() external view returns (address);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* @dev Tell if the current registry supports historic information or not
|
||
|
|
* @return True if the optional history functions are implemented, false otherwise
|
||
|
|
*/
|
||
|
|
function supportsHistory() external pure returns (bool);
|
||
|
|
}
|