mirror of
https://github.com/Instadapp/aave-protocol-v2.git
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118 lines
3.2 KiB
Solidity
118 lines
3.2 KiB
Solidity
// SPDX-License-Identifier: agpl-3.0
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pragma solidity ^0.6.8;
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/**
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* @title interface IStableDebtToken
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*
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* @notice defines the interface for the stable debt token
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*
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* @dev it does not inherit from IERC20 to save in code size
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*
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* @author Aave
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*
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**/
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interface IStableDebtToken {
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/**
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* @dev emitted when new stable debt is minted
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* @param user the address of the user
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* @param amount the amount minted
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* @param previousBalance the previous balance of the user
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* @param currentBalance the current balance of the user
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* @param balanceIncrease the debt increase since the last update
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* @param newRate the rate of the debt after the minting
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**/
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event Mint(
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address indexed user,
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uint256 amount,
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uint256 previousBalance,
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uint256 currentBalance,
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uint256 balanceIncrease,
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uint256 newRate
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);
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/**
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* @dev emitted when new stable debt is burned
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* @param user the address of the user
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* @param amount the amount minted
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* @param previousBalance the previous balance of the user
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* @param currentBalance the current balance of the user
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* @param balanceIncrease the debt increase since the last update
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**/
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event Burn(
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address indexed user,
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uint256 amount,
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uint256 previousBalance,
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uint256 currentBalance,
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uint256 balanceIncrease
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);
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/**
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* @dev mints debt token to the target user. The resulting rate is the weighted average
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* between the rate of the new debt and the rate of the previous debt
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* @param user the address of the user
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* @param amount the amount of debt tokens to mint
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* @param rate the rate of the debt being minted.
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**/
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function mint(
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address user,
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uint256 amount,
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uint256 rate
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) external;
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/**
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* @dev burns debt of the target user.
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* @param user the address of the user
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* @param amount the amount of debt tokens to mint
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**/
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function burn(address user, uint256 amount) external;
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/**
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* @dev returns the average rate of all the stable rate loans.
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* @return the average stable rate
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**/
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function getAverageStableRate() external view returns (uint256);
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/**
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* @dev returns the stable rate of the user debt
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* @return the stable rate of the user
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**/
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function getUserStableRate(address user) external view returns (uint256);
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/**
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* @dev returns the timestamp of the last update of the user
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* @return the timestamp
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**/
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function getUserLastUpdated(address user) external view returns (uint40);
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/**
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* @dev returns the principal, the total supply and the average stable rate
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**/
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function getSupplyData()
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external
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view
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returns (
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uint256,
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uint256,
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uint256,
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uint40
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);
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/**
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* @dev returns the timestamp of the last update of the total supply
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* @return the timestamp
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**/
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function getTotalSupplyLastUpdated() external view returns (uint40);
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/**
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* @dev returns the total supply and the average stable rate
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**/
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function getTotalSupplyAndAvgRate() external view returns (uint256, uint256);
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/**
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* @dev Returns the principal debt balance of the user
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* @return The debt balance of the user since the last burn/mint action
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**/
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function principalBalanceOf(address user) external view returns (uint256);
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}
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