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- Contract name:
- AToken
- Optimization enabled
- true
- Compiler version
- v0.7.6+commit.7338295f
- Optimization runs
- 200
- Verified at
- 2026-02-28T18:39:51.058794Z
contracts/protocol/tokenization/AToken.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
import {IERC20} from "../../dependencies/openzeppelin/contracts/IERC20.sol";
import {SafeERC20} from "../../dependencies/openzeppelin/contracts/SafeERC20.sol";
import {ILendingPool} from "../../interfaces/ILendingPool.sol";
import {IAToken} from "../../interfaces/IAToken.sol";
import {WadRayMath} from "../libraries/math/WadRayMath.sol";
import {Errors} from "../libraries/helpers/Errors.sol";
import {VersionedInitializable} from "../libraries/aave-upgradeability/VersionedInitializable.sol";
import {IncentivizedERC20} from "./IncentivizedERC20.sol";
import {IPhiatIncentivesController} from "../../interfaces/IPhiatIncentivesController.sol";
import {SafeMath} from "../../dependencies/openzeppelin/contracts/SafeMath.sol";
/**
* @title Aave ERC20 AToken
* @dev Implementation of the interest bearing token for the Aave protocol
* @author Aave
*/
contract AToken is
VersionedInitializable,
IncentivizedERC20("ATOKEN_IMPL", "ATOKEN_IMPL", 0),
IAToken
{
using WadRayMath for uint256;
using SafeERC20 for IERC20;
using SafeMath for uint256;
bytes public constant EIP712_REVISION = bytes("1");
bytes32 internal constant EIP712_DOMAIN =
keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
bytes32 public constant PERMIT_TYPEHASH =
keccak256(
"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
);
uint256 public constant ATOKEN_REVISION = 0x1;
/// @dev owner => next valid nonce to submit with permit()
mapping(address => uint256) public _nonces;
bytes32 public DOMAIN_SEPARATOR;
address internal _treasury;
modifier onlyLendingPool() {
require(
_msgSender() == address(_pool),
Errors.CT_CALLER_MUST_BE_LENDING_POOL
);
_;
}
function getRevision() internal pure virtual override returns (uint256) {
return ATOKEN_REVISION;
}
/**
* @dev Initializes the aToken
* @param pool The address of the lending pool where this aToken will be used
* @param treasury The address of the Aave treasury, receiving the fees on this aToken
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param aTokenDecimals The decimals of the aToken, same as the underlying asset's
* @param aTokenName The name of the aToken
* @param aTokenSymbol The symbol of the aToken
*/
function initialize(
ILendingPool pool,
address treasury,
address underlyingAsset,
uint8 aTokenDecimals,
string calldata aTokenName,
string calldata aTokenSymbol,
bytes calldata params
) external override initializer {
require(treasury != address(0), "Treasury can not be zero address");
require(
underlyingAsset != address(0),
"Underlying asset can not be zero address"
);
uint256 chainId;
//solium-disable-next-line
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
EIP712_DOMAIN,
keccak256(bytes(aTokenName)),
keccak256(EIP712_REVISION),
chainId,
address(this)
)
);
_setName(aTokenName);
_setSymbol(aTokenSymbol);
_setDecimals(aTokenDecimals);
_pool = pool;
_treasury = treasury;
_underlyingAsset = underlyingAsset;
emit Initialized(
underlyingAsset,
address(pool),
treasury,
aTokenDecimals,
aTokenName,
aTokenSymbol,
params
);
}
/**
* @dev Burns aTokens from `user` and sends the equivalent amount of underlying to `receiverOfUnderlying`
* - Only callable by the LendingPool, as extra state updates there need to be managed
* @param user The owner of the aTokens, getting them burned
* @param receiverOfUnderlying The address that will receive the underlying
* @param amount The amount being burned
* @param index The new liquidity index of the reserve
**/
function burn(
address user,
address receiverOfUnderlying,
uint256 amount,
uint256 index
) external override onlyLendingPool {
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_BURN_AMOUNT);
_burn(user, amountScaled);
IERC20(_underlyingAsset).safeTransfer(receiverOfUnderlying, amount);
emit Transfer(user, address(0), amount);
emit Burn(user, receiverOfUnderlying, amount, index);
}
/**
* @dev Mints `amount` aTokens to `user`
* - Only callable by the LendingPool, as extra state updates there need to be managed
* @param user The address receiving the minted tokens
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
* @return `true` if the the previous balance of the user was 0
*/
function mint(
address user,
uint256 amount,
uint256 index
) external override onlyLendingPool returns (bool) {
uint256 previousBalance = super.balanceOf(user);
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_MINT_AMOUNT);
_mint(user, amountScaled);
emit Transfer(address(0), user, amount);
emit Mint(user, amount, index);
return previousBalance == 0;
}
/**
* @dev Mints aTokens to the reserve treasury
* - Only callable by the LendingPool
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
*/
function mintToTreasury(uint256 amount, uint256 index)
external
override
onlyLendingPool
{
if (amount == 0) {
return;
}
address treasury = _treasury;
// Compared to the normal mint, we don't check for rounding errors.
// The amount to mint can easily be very small since it is a fraction of the interest ccrued.
// In that case, the treasury will experience a (very small) loss, but it
// wont cause potentially valid transactions to fail.
_mint(treasury, amount.rayDiv(index));
emit Transfer(address(0), treasury, amount);
emit Mint(treasury, amount, index);
}
/**
* @dev Transfers aTokens in the event of a borrow being liquidated, in case the liquidators reclaims the aToken
* - Only callable by the LendingPool
* @param from The address getting liquidated, current owner of the aTokens
* @param to The recipient
* @param value The amount of tokens getting transferred
**/
function transferOnLiquidation(
address from,
address to,
uint256 value
) external override onlyLendingPool {
// Being a normal transfer, the Transfer() and BalanceTransfer() are emitted
// so no need to emit a specific event here
_transfer(from, to, value, false);
emit Transfer(from, to, value);
}
/**
* @dev Calculates the balance of the user: principal balance + interest generated by the principal
* @param user The user whose balance is calculated
* @return The balance of the user
**/
function balanceOf(address user)
public
view
override(IncentivizedERC20, IERC20)
returns (uint256)
{
return
super.balanceOf(user).rayMul(
_pool.getReserveNormalizedIncome(_underlyingAsset)
);
}
/**
* @dev Returns the scaled balance of the user. The scaled balance is the sum of all the
* updated stored balance divided by the reserve's liquidity index at the moment of the update
* @param user The user whose balance is calculated
* @return The scaled balance of the user
**/
function scaledBalanceOf(address user)
external
view
override
returns (uint256)
{
return super.balanceOf(user);
}
/**
* @dev Returns the scaled balance of the user and the scaled total supply.
* @param user The address of the user
* @return The scaled balance of the user
* @return The scaled balance and the scaled total supply
**/
function getScaledUserBalanceAndSupply(address user)
external
view
override
returns (uint256, uint256)
{
return (super.balanceOf(user), super.totalSupply());
}
/**
* @dev calculates the total supply of the specific aToken
* since the balance of every single user increases over time, the total supply
* does that too.
* @return the current total supply
**/
function totalSupply()
public
view
override(IncentivizedERC20, IERC20)
returns (uint256)
{
uint256 currentSupplyScaled = super.totalSupply();
if (currentSupplyScaled == 0) {
return 0;
}
return
currentSupplyScaled.rayMul(
_pool.getReserveNormalizedIncome(_underlyingAsset)
);
}
/**
* @dev Returns the scaled total supply of the variable debt token. Represents sum(debt/index)
* @return the scaled total supply
**/
function scaledTotalSupply()
public
view
virtual
override
returns (uint256)
{
return super.totalSupply();
}
/**
* @dev Returns the address of the Aave treasury, receiving the fees on this aToken
**/
function RESERVE_TREASURY_ADDRESS() public view override returns (address) {
return _treasury;
}
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() public view override returns (address) {
return _underlyingAsset;
}
/**
* @dev Returns the address of the lending pool where this aToken is used
**/
function POOL() public view returns (ILendingPool) {
return _pool;
}
/**
* @dev For internal usage in the logic of the parent contract IncentivizedERC20
**/
function _getIncentivesController()
internal
view
override
returns (IPhiatIncentivesController)
{
return
IPhiatIncentivesController(
_pool.getAddressesProvider().getIncentivesController()
);
}
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController()
external
view
override
returns (IPhiatIncentivesController)
{
return _getIncentivesController();
}
/**
* @dev Transfers the underlying asset to `target`. Used by the LendingPool to transfer
* assets in borrow(), withdraw() and flashLoan()
* @param target The recipient of the aTokens
* @param amount The amount getting transferred
* @return The amount transferred
**/
function transferUnderlyingTo(address target, uint256 amount)
external
override
onlyLendingPool
returns (uint256)
{
IERC20(_underlyingAsset).safeTransfer(target, amount);
return amount;
}
/**
* @dev Invoked to execute actions on the aToken side after a repayment.
* @param user The user executing the repayment
* @param amount The amount getting repaid
**/
function handleRepayment(address user, uint256 amount)
external
override
onlyLendingPool
{}
/**
* @dev implements the permit function as for
* https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md
* @param owner The owner of the funds
* @param spender The spender
* @param value The amount
* @param deadline The deadline timestamp, type(uint256).max for max deadline
* @param v Signature param
* @param s Signature param
* @param r Signature param
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external {
require(owner != address(0), "INVALID_OWNER");
//solium-disable-next-line
require(block.timestamp <= deadline, "INVALID_EXPIRATION");
uint256 currentValidNonce = _nonces[owner];
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
currentValidNonce,
deadline
)
)
)
);
require(owner == ecrecover(digest, v, r, s), "INVALID_SIGNATURE");
_nonces[owner] = currentValidNonce.add(1);
_approve(owner, spender, value);
}
/**
* @dev Transfers the aTokens between two users. Validates the transfer
* (ie checks for valid HF after the transfer) if required
* @param from The source address
* @param to The destination address
* @param amount The amount getting transferred
* @param validate `true` if the transfer needs to be validated
**/
function _transfer(
address from,
address to,
uint256 amount,
bool validate
) internal {
address underlyingAsset = _underlyingAsset;
ILendingPool pool = _pool;
uint256 index = pool.getReserveNormalizedIncome(underlyingAsset);
uint256 fromBalanceBefore = super.balanceOf(from).rayMul(index);
uint256 toBalanceBefore = super.balanceOf(to).rayMul(index);
super._transfer(from, to, amount.rayDiv(index));
if (validate) {
pool.finalizeTransfer(
underlyingAsset,
from,
to,
amount,
fromBalanceBefore,
toBalanceBefore
);
}
emit BalanceTransfer(from, to, amount, index);
}
/**
* @dev Overrides the parent _transfer to force validated transfer() and transferFrom()
* @param from The source address
* @param to The destination address
* @param amount The amount getting transferred
**/
function _transfer(
address from,
address to,
uint256 amount
) internal override {
_transfer(from, to, amount, true);
}
}
/VersionedInitializable.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
/**
* @title VersionedInitializable
*
* @dev Helper contract to implement initializer functions. To use it, replace
* the constructor with a function that has the `initializer` modifier.
* WARNING: Unlike constructors, initializer functions must be manually
* invoked. This applies both to deploying an Initializable contract, as well
* as extending an Initializable contract via inheritance.
* WARNING: When used with inheritance, manual care must be taken to not invoke
* a parent initializer twice, or ensure that all initializers are idempotent,
* because this is not dealt with automatically as with constructors.
*
* @author Aave, inspired by the OpenZeppelin Initializable contract
*/
abstract contract VersionedInitializable {
/**
* @dev Indicates that the contract has been initialized.
*/
uint256 private lastInitializedRevision = 0;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifier to use in the initializer function of a contract.
*/
modifier initializer() {
uint256 revision = getRevision();
require(
initializing ||
isConstructor() ||
revision > lastInitializedRevision,
"Contract instance has already been initialized"
);
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
lastInitializedRevision = revision;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
/**
* @dev returns the revision number of the contract
* Needs to be defined in the inherited class as a constant.
**/
function getRevision() internal pure virtual returns (uint256);
/**
* @dev Returns true if and only if the function is running in the constructor
**/
function isConstructor() private view returns (bool) {
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
uint256 cs;
//solium-disable-next-line
assembly {
cs := extcodesize(address())
}
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
/IERC20Metadata.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity 0.7.6;
import "./IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
/
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
pragma experimental ABIEncoderV2;
interface IPhiatIncentivesController {
event RewardsAccrued(address indexed user, uint256 amount);
event RewardsClaimed(address indexed user, uint256 amount);
/**
* @dev add asset to accumulate rewards
* @param asset The address of the reference asset of the distribution
*/
function addAsset(address asset) external;
/**
* @dev Returns the configuration of the distribution for a certain asset
* @param asset The address of the reference asset of the distribution
* @return The asset index, the emission per second and the last updated timestamp
**/
function getAssetData(address asset)
external
view
returns (
uint256,
uint256,
uint256
);
/**
* LEGACY **************************
* @dev Returns the configuration of the distribution for a certain asset
* @param asset The address of the reference asset of the distribution
* @return The asset index, the emission per second and the last updated timestamp
**/
function assets(address asset)
external
view
returns (
uint128,
uint128,
uint256
);
/**
* @dev Called by the corresponding asset on any update that affects the rewards distribution
* @param user The address of the user
* @param userBalance The (old) balance of the user of the asset in the lending pool
* latest user balance (if different) can be retrieved from sender's balanceOf function
* @param totalSupply The (old) total supply of the asset in the lending pool
* latest total supply (if different) can be retrieved from sender's totalSupply function
**/
function handleAction(
address user,
uint256 userBalance,
uint256 totalSupply
) external;
/**
* @dev returns the unclaimed rewards of the user
* @param user the address of the user
* @return the unclaimed user rewards
*/
function getUserUnclaimedRewards(address user)
external
view
returns (uint256);
/**
* @dev returns the unclaimed rewards of the user
* @param user the address of the user
* @param asset The asset to incentivize
* @return the user index for the asset
*/
function getUserAssetData(address user, address asset)
external
view
returns (uint256);
/**
* @dev claim all user rewards
* @param user the address of the user
*/
function claimRewards(address user) external;
/**
* @dev for backward compatibility with previous implementation of the Incentives controller
*/
function REWARD_TOKEN() external view returns (address);
/**
* @dev for backward compatibility with previous implementation of the Incentives controller
*/
function PRECISION() external view returns (uint8);
/**
* @dev Gets the distribution end timestamp of the emissions
*/
function DISTRIBUTION_END() external view returns (uint256);
}
/SafeERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IERC20.sol";
import "./SafeMath.sol";
import "./Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transfer.selector, to, value)
);
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
);
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, value)
);
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(
value
);
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(
value,
"SafeERC20: decreased allowance below zero"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(
data,
"SafeERC20: low-level call failed"
);
if (returndata.length > 0) {
// Return data is optional
// solhint-disable-next-line max-line-length
require(
abi.decode(returndata, (bool)),
"SafeERC20: ERC20 operation did not succeed"
);
}
}
}
/SafeMath.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b)
internal
pure
returns (bool, uint256)
{
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b)
internal
pure
returns (bool, uint256)
{
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b)
internal
pure
returns (bool, uint256)
{
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b)
internal
pure
returns (bool, uint256)
{
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b)
internal
pure
returns (bool, uint256)
{
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
/Context.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/Address.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(
address(this).balance >= amount,
"Address: insufficient balance"
);
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{value: amount}("");
require(
success,
"Address: unable to send value, recipient may have reverted"
);
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return
functionCallWithValue(
target,
data,
value,
"Address: low-level call with value failed"
);
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(
address(this).balance >= value,
"Address: insufficient balance for call"
);
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{value: value}(
data
);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data)
internal
view
returns (bytes memory)
{
return
functionStaticCall(
target,
data,
"Address: low-level static call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return
functionDelegateCall(
target,
data,
"Address: low-level delegate call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) private pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/IERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount)
external
returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
/
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
/**
* @title LendingPoolAddressesProvider contract
* @dev Main registry of addresses part of or connected to the protocol, including permissioned roles
* - Acting also as factory of proxies and admin of those, so with right to change its implementations
* - Owned by the Aave Governance
* @author Aave
**/
interface ILendingPoolAddressesProvider {
event MarketIdSet(string newMarketId);
event LendingPoolUpdated(address indexed newAddress);
event ConfigurationAdminUpdated(address indexed newAddress);
event EmergencyAdminUpdated(address indexed newAddress);
event LendingPoolConfiguratorUpdated(address indexed newAddress);
event LendingPoolCollateralManagerUpdated(address indexed newAddress);
event PriceOracleUpdated(address indexed newAddress);
event LendingRateOracleUpdated(address indexed newAddress);
event IncentivesControllerUpdated(address indexed newAddress);
event ProxyCreated(bytes32 id, address indexed newAddress);
event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy);
function getMarketId() external view returns (string memory);
function setMarketId(string calldata marketId) external;
function setAddress(bytes32 id, address newAddress) external;
function setAddressAsProxy(bytes32 id, address impl) external;
function getAddress(bytes32 id) external view returns (address);
function getLendingPool() external view returns (address);
function setLendingPoolImpl(address pool) external;
function getLendingPoolConfigurator() external view returns (address);
function setLendingPoolConfiguratorImpl(address configurator) external;
function getLendingPoolCollateralManager() external view returns (address);
function setLendingPoolCollateralManager(address manager) external;
function getPoolAdmin() external view returns (address);
function setPoolAdmin(address admin) external;
function getEmergencyAdmin() external view returns (address);
function setEmergencyAdmin(address admin) external;
function getPriceOracle() external view returns (address);
function setPriceOracle(address priceOracle) external;
function getLendingRateOracle() external view returns (address);
function setLendingRateOracle(address lendingRateOracle) external;
function getIncentivesController() external view returns (address);
function setIncentivesController(address lendingRateOracle) external;
}
/
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
import {Context} from "../../dependencies/openzeppelin/contracts/Context.sol";
import {IERC20} from "../../dependencies/openzeppelin/contracts/IERC20.sol";
import {IERC20Metadata} from "../../dependencies/openzeppelin/contracts/IERC20Metadata.sol";
import {SafeMath} from "../../dependencies/openzeppelin/contracts/SafeMath.sol";
import {IPhiatIncentivesController} from "../../interfaces/IPhiatIncentivesController.sol";
import {ILendingPoolAddressesProvider} from "../../interfaces/ILendingPoolAddressesProvider.sol";
import {ILendingPool} from "../../interfaces/ILendingPool.sol";
/**
* @title ERC20
* @notice Basic ERC20 implementation
* @author Aave, inspired by the Openzeppelin ERC20 implementation
**/
abstract contract IncentivizedERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) internal _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 internal _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
ILendingPool internal _pool;
address internal _underlyingAsset;
constructor(
string memory name,
string memory symbol,
uint8 decimals
) {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return The name of the token
**/
function name() public view override returns (string memory) {
return _name;
}
/**
* @return The symbol of the token
**/
function symbol() public view override returns (string memory) {
return _symbol;
}
/**
* @return The decimals of the token
**/
function decimals() public view override returns (uint8) {
return _decimals;
}
/**
* @return The total supply of the token
**/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @return The balance of the token
**/
function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}
/**
* @return Abstract function implemented by the child aToken/debtToken.
* Done this way in order to not break compatibility with previous versions of aTokens/debtTokens
**/
function _getIncentivesController()
internal
view
virtual
returns (IPhiatIncentivesController);
/**
* @dev Executes a transfer of tokens from _msgSender() to recipient
* @param recipient The recipient of the tokens
* @param amount The amount of tokens being transferred
* @return `true` if the transfer succeeds, `false` otherwise
**/
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
emit Transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev Returns the allowance of spender on the tokens owned by owner
* @param owner The owner of the tokens
* @param spender The user allowed to spend the owner's tokens
* @return The amount of owner's tokens spender is allowed to spend
**/
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev Allows `spender` to spend the tokens owned by _msgSender()
* @param spender The user allowed to spend _msgSender() tokens
* @return `true`
**/
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev Executes a transfer of token from sender to recipient, if _msgSender() is allowed to do so
* @param sender The owner of the tokens
* @param recipient The recipient of the tokens
* @param amount The amount of tokens being transferred
* @return `true` if the transfer succeeds, `false` otherwise
**/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
emit Transfer(sender, recipient, amount);
return true;
}
/**
* @dev Increases the allowance of spender to spend _msgSender() tokens
* @param spender The user allowed to spend on behalf of _msgSender()
* @param addedValue The amount being added to the allowance
* @return `true`
**/
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}
/**
* @dev Decreases the allowance of spender to spend _msgSender() tokens
* @param spender The user allowed to spend on behalf of _msgSender()
* @param subtractedValue The amount being subtracted to the allowance
* @return `true`
**/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 oldSenderBalance = _balances[sender];
_balances[sender] = oldSenderBalance.sub(
amount,
"ERC20: transfer amount exceeds balance"
);
uint256 oldRecipientBalance = _balances[recipient];
_balances[recipient] = _balances[recipient].add(amount);
if (address(_getIncentivesController()) != address(0)) {
uint256 currentTotalSupply = _totalSupply;
_getIncentivesController().handleAction(
sender,
oldSenderBalance,
currentTotalSupply
);
if (sender != recipient) {
_getIncentivesController().handleAction(
recipient,
oldRecipientBalance,
currentTotalSupply
);
}
}
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
uint256 oldTotalSupply = _totalSupply;
_totalSupply = oldTotalSupply.add(amount);
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.add(amount);
if (address(_getIncentivesController()) != address(0)) {
_getIncentivesController().handleAction(
account,
oldAccountBalance,
oldTotalSupply
);
}
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 oldTotalSupply = _totalSupply;
_totalSupply = oldTotalSupply.sub(amount);
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.sub(
amount,
"ERC20: burn amount exceeds balance"
);
if (address(_getIncentivesController()) != address(0)) {
_getIncentivesController().handleAction(
account,
oldAccountBalance,
oldTotalSupply
);
}
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _setName(string memory newName) internal {
_name = newName;
}
function _setSymbol(string memory newSymbol) internal {
_symbol = newSymbol;
}
function _setDecimals(uint8 newDecimals) internal {
_decimals = newDecimals;
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
/DataTypes.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
library DataTypes {
// refer to the whitepaper, section 1.1 basic concepts for a formal description of these properties.
struct ReserveData {
//stores the reserve configuration
ReserveConfigurationMap configuration;
//the liquidity index. Expressed in ray
uint128 liquidityIndex;
//variable borrow index. Expressed in ray
uint128 variableBorrowIndex;
//the current supply rate. Expressed in ray
uint128 currentLiquidityRate;
//the current variable borrow rate. Expressed in ray
uint128 currentVariableBorrowRate;
//the current stable borrow rate. Expressed in ray
uint128 currentStableBorrowRate;
uint40 lastUpdateTimestamp;
//tokens addresses
address aTokenAddress;
address stableDebtTokenAddress;
address variableDebtTokenAddress;
//address of the interest rate strategy
address interestRateStrategyAddress;
//the id of the reserve. Represents the position in the list of the active reserves
uint8 id;
}
struct ReserveConfigurationMap {
//bit 0-15: LTV
//bit 16-31: Liq. threshold
//bit 32-47: Liq. bonus
//bit 48-55: Decimals
//bit 56: Reserve is active
//bit 57: reserve is frozen
//bit 58: borrowing is enabled
//bit 59: stable rate borrowing enabled
//bit 60-63: reserved
//bit 64-79: reserve factor
uint256 data;
}
struct ReserveLimits {
uint256 maxGlobalDepositSize;
uint256 maxIndividualDepositSize;
uint256 minIndividualDepositSize;
uint256 maxGlobalBorrowSize;
uint256 maxIndividualBorrowSize;
uint256 maxBorrowBps;
}
struct UserConfigurationMap {
uint256 data;
}
enum InterestRateMode {
NONE,
STABLE,
VARIABLE
}
}
/WadRayMath.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
import {Errors} from "../helpers/Errors.sol";
/**
* @title WadRayMath library
* @author Aave
* @dev Provides mul and div function for wads (decimal numbers with 18 digits precision) and rays (decimals with 27 digits)
**/
library WadRayMath {
uint256 internal constant WAD = 1e18;
uint256 internal constant halfWAD = WAD / 2;
uint256 internal constant RAY = 1e27;
uint256 internal constant halfRAY = RAY / 2;
uint256 internal constant WAD_RAY_RATIO = 1e9;
/**
* @return One ray, 1e27
**/
function ray() internal pure returns (uint256) {
return RAY;
}
/**
* @return One wad, 1e18
**/
function wad() internal pure returns (uint256) {
return WAD;
}
/**
* @return Half ray, 1e27/2
**/
function halfRay() internal pure returns (uint256) {
return halfRAY;
}
/**
* @return Half ray, 1e18/2
**/
function halfWad() internal pure returns (uint256) {
return halfWAD;
}
/**
* @dev Multiplies two wad, rounding half up to the nearest wad
* @param a Wad
* @param b Wad
* @return The result of a*b, in wad
**/
function wadMul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
require(
a <= (type(uint256).max - halfWAD) / b,
Errors.MATH_MULTIPLICATION_OVERFLOW
);
return (a * b + halfWAD) / WAD;
}
/**
* @dev Divides two wad, rounding half up to the nearest wad
* @param a Wad
* @param b Wad
* @return The result of a/b, in wad
**/
function wadDiv(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, Errors.MATH_DIVISION_BY_ZERO);
uint256 halfB = b / 2;
require(
a <= (type(uint256).max - halfB) / WAD,
Errors.MATH_MULTIPLICATION_OVERFLOW
);
return (a * WAD + halfB) / b;
}
/**
* @dev Multiplies two ray, rounding half up to the nearest ray
* @param a Ray
* @param b Ray
* @return The result of a*b, in ray
**/
function rayMul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
require(
a <= (type(uint256).max - halfRAY) / b,
Errors.MATH_MULTIPLICATION_OVERFLOW
);
return (a * b + halfRAY) / RAY;
}
/**
* @dev Divides two ray, rounding half up to the nearest ray
* @param a Ray
* @param b Ray
* @return The result of a/b, in ray
**/
function rayDiv(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, Errors.MATH_DIVISION_BY_ZERO);
uint256 halfB = b / 2;
require(
a <= (type(uint256).max - halfB) / RAY,
Errors.MATH_MULTIPLICATION_OVERFLOW
);
return (a * RAY + halfB) / b;
}
/**
* @dev Casts ray down to wad
* @param a Ray
* @return a casted to wad, rounded half up to the nearest wad
**/
function rayToWad(uint256 a) internal pure returns (uint256) {
uint256 halfRatio = WAD_RAY_RATIO / 2;
uint256 result = halfRatio + a;
require(result >= halfRatio, Errors.MATH_ADDITION_OVERFLOW);
return result / WAD_RAY_RATIO;
}
/**
* @dev Converts wad up to ray
* @param a Wad
* @return a converted in ray
**/
function wadToRay(uint256 a) internal pure returns (uint256) {
uint256 result = a * WAD_RAY_RATIO;
require(
result / WAD_RAY_RATIO == a,
Errors.MATH_MULTIPLICATION_OVERFLOW
);
return result;
}
}
/Errors.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
/**
* @title Errors library
* @author Aave
* @notice Defines the error messages emitted by the different contracts of the Aave protocol
* @dev Error messages prefix glossary:
* - VL = ValidationLogic
* - AVL = Additional ValidationLogic
* - MATH = Math libraries
* - CT = Common errors between tokens (AToken, VariableDebtToken and StableDebtToken)
* - AT = AToken
* - SDT = StableDebtToken
* - VDT = VariableDebtToken
* - LP = LendingPool
* - LPAPR = LendingPoolAddressesProviderRegistry
* - LPC = LendingPoolConfiguration
* - RL = ReserveLogic
* - LPCM = LendingPoolCollateralManager
* - P = Pausable
*/
library Errors {
//common errors
string public constant CALLER_NOT_POOL_ADMIN = "33"; // 'The caller must be the pool admin'
string public constant BORROW_ALLOWANCE_NOT_ENOUGH = "59"; // User borrows on behalf, but allowance are too small
//contract specific errors
string public constant VL_INVALID_AMOUNT = "1"; // 'Amount must be greater than 0'
string public constant VL_NO_ACTIVE_RESERVE = "2"; // 'Action requires an active reserve'
string public constant VL_RESERVE_FROZEN = "3"; // 'Action cannot be performed because the reserve is frozen'
string public constant VL_CURRENT_AVAILABLE_LIQUIDITY_NOT_ENOUGH = "4"; // 'The current liquidity is not enough'
string public constant VL_NOT_ENOUGH_AVAILABLE_USER_BALANCE = "5"; // 'User cannot withdraw more than the available balance'
string public constant VL_TRANSFER_NOT_ALLOWED = "6"; // 'Transfer cannot be allowed.'
string public constant VL_BORROWING_NOT_ENABLED = "7"; // 'Borrowing is not enabled'
string public constant VL_INVALID_INTEREST_RATE_MODE_SELECTED = "8"; // 'Invalid interest rate mode selected'
string public constant VL_COLLATERAL_BALANCE_IS_0 = "9"; // 'The collateral balance is 0'
string public constant VL_HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD =
"10"; // 'Health factor is lesser than the liquidation threshold'
string public constant VL_COLLATERAL_CANNOT_COVER_NEW_BORROW = "11"; // 'There is not enough collateral to cover a new borrow'
string public constant VL_STABLE_BORROWING_NOT_ENABLED = "12"; // stable borrowing not enabled
string public constant VL_COLLATERAL_SAME_AS_BORROWING_CURRENCY = "13"; // collateral is (mostly) the same currency that is being borrowed
string public constant VL_AMOUNT_BIGGER_THAN_MAX_LOAN_SIZE_STABLE = "14"; // 'The requested amount is greater than the max loan size in stable rate mode
string public constant VL_NO_DEBT_OF_SELECTED_TYPE = "15"; // 'for repayment of stable debt, the user needs to have stable debt, otherwise, he needs to have variable debt'
string public constant VL_NO_EXPLICIT_AMOUNT_TO_REPAY_ON_BEHALF = "16"; // 'To repay on behalf of an user an explicit amount to repay is needed'
string public constant VL_NO_STABLE_RATE_LOAN_IN_RESERVE = "17"; // 'User does not have a stable rate loan in progress on this reserve'
string public constant VL_NO_VARIABLE_RATE_LOAN_IN_RESERVE = "18"; // 'User does not have a variable rate loan in progress on this reserve'
string public constant VL_UNDERLYING_BALANCE_NOT_GREATER_THAN_0 = "19"; // 'The underlying balance needs to be greater than 0'
string public constant VL_DEPOSIT_ALREADY_IN_USE = "20"; // 'User deposit is already being used as collateral'
string public constant LP_NOT_ENOUGH_STABLE_BORROW_BALANCE = "21"; // 'User does not have any stable rate loan for this reserve'
string public constant LP_INTEREST_RATE_REBALANCE_CONDITIONS_NOT_MET = "22"; // 'Interest rate rebalance conditions were not met'
string public constant LP_LIQUIDATION_CALL_FAILED = "23"; // 'Liquidation call failed'
string public constant LP_NOT_ENOUGH_LIQUIDITY_TO_BORROW = "24"; // 'There is not enough liquidity available to borrow'
string public constant LP_REQUESTED_AMOUNT_TOO_SMALL = "25"; // 'The requested amount is too small for a FlashLoan.'
string public constant LP_INCONSISTENT_PROTOCOL_ACTUAL_BALANCE = "26"; // 'The actual balance of the protocol is inconsistent'
string public constant LP_CALLER_NOT_LENDING_POOL_CONFIGURATOR = "27"; // 'The caller of the function is not the lending pool configurator'
string public constant LP_INCONSISTENT_FLASHLOAN_PARAMS = "28";
string public constant CT_CALLER_MUST_BE_LENDING_POOL = "29"; // 'The caller of this function must be a lending pool'
string public constant CT_CANNOT_GIVE_ALLOWANCE_TO_HIMSELF = "30"; // 'User cannot give allowance to himself'
string public constant CT_TRANSFER_AMOUNT_NOT_GT_0 = "31"; // 'Transferred amount needs to be greater than zero'
string public constant RL_RESERVE_ALREADY_INITIALIZED = "32"; // 'Reserve has already been initialized'
string public constant LPC_RESERVE_LIQUIDITY_NOT_0 = "34"; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_ATOKEN_POOL_ADDRESS = "35"; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_STABLE_DEBT_TOKEN_POOL_ADDRESS = "36"; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_VARIABLE_DEBT_TOKEN_POOL_ADDRESS = "37"; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_STABLE_DEBT_TOKEN_UNDERLYING_ADDRESS =
"38"; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_VARIABLE_DEBT_TOKEN_UNDERLYING_ADDRESS =
"39"; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_ADDRESSES_PROVIDER_ID = "40"; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_CONFIGURATION = "75"; // 'Invalid risk parameters for the reserve'
string public constant LPC_CALLER_NOT_EMERGENCY_ADMIN = "76"; // 'The caller must be the emergency admin'
string public constant LPAPR_PROVIDER_NOT_REGISTERED = "41"; // 'Provider is not registered'
string public constant LPCM_HEALTH_FACTOR_NOT_BELOW_THRESHOLD = "42"; // 'Health factor is not below the threshold'
string public constant LPCM_COLLATERAL_CANNOT_BE_LIQUIDATED = "43"; // 'The collateral chosen cannot be liquidated'
string public constant LPCM_SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = "44"; // 'User did not borrow the specified currency'
string public constant LPCM_NOT_ENOUGH_LIQUIDITY_TO_LIQUIDATE = "45"; // "There isn't enough liquidity available to liquidate"
string public constant LPCM_NO_ERRORS = "46"; // 'No errors'
string public constant LP_INVALID_FLASHLOAN_MODE = "47"; //Invalid flashloan mode selected
string public constant MATH_MULTIPLICATION_OVERFLOW = "48";
string public constant MATH_ADDITION_OVERFLOW = "49";
string public constant MATH_DIVISION_BY_ZERO = "50";
string public constant RL_LIQUIDITY_INDEX_OVERFLOW = "51"; // Liquidity index overflows uint128
string public constant RL_VARIABLE_BORROW_INDEX_OVERFLOW = "52"; // Variable borrow index overflows uint128
string public constant RL_LIQUIDITY_RATE_OVERFLOW = "53"; // Liquidity rate overflows uint128
string public constant RL_VARIABLE_BORROW_RATE_OVERFLOW = "54"; // Variable borrow rate overflows uint128
string public constant RL_STABLE_BORROW_RATE_OVERFLOW = "55"; // Stable borrow rate overflows uint128
string public constant CT_INVALID_MINT_AMOUNT = "56"; //invalid amount to mint
string public constant LP_FAILED_REPAY_WITH_COLLATERAL = "57";
string public constant CT_INVALID_BURN_AMOUNT = "58"; //invalid amount to burn
string public constant LP_FAILED_COLLATERAL_SWAP = "60";
string public constant LP_INVALID_EQUAL_ASSETS_TO_SWAP = "61";
string public constant LP_REENTRANCY_NOT_ALLOWED = "62";
string public constant LP_CALLER_MUST_BE_AN_ATOKEN = "63";
string public constant LP_IS_PAUSED = "64"; // 'Pool is paused'
string public constant LP_NO_MORE_RESERVES_ALLOWED = "65";
string public constant LP_INVALID_FLASH_LOAN_EXECUTOR_RETURN = "66";
string public constant RC_INVALID_LTV = "67";
string public constant RC_INVALID_LIQ_THRESHOLD = "68";
string public constant RC_INVALID_LIQ_BONUS = "69";
string public constant RC_INVALID_DECIMALS = "70";
string public constant RC_INVALID_RESERVE_FACTOR = "71";
string public constant LPAPR_INVALID_ADDRESSES_PROVIDER_ID = "72";
string public constant VL_INCONSISTENT_FLASHLOAN_PARAMS = "73";
string public constant LP_INCONSISTENT_PARAMS_LENGTH = "74";
string public constant UL_INVALID_INDEX = "77";
string public constant LP_NOT_CONTRACT = "78";
string public constant SDT_STABLE_DEBT_OVERFLOW = "79";
string public constant SDT_BURN_EXCEEDS_BALANCE = "80";
string public constant AVL_EXCEED_MAX_GLOBAL_DEPOSIT_SIZE = "81";
string public constant AVL_EXCEED_MAX_INDIVIDUAL_DEPOSIT_SIZE = "82";
string public constant AVL_BELOW_MIN_INDIVIDUAL_DEPOSIT_SIZE = "83";
string public constant AVL_EXCEED_MAX_GLOBAL_BORROW_SIZE = "84";
string public constant AVL_EXCEED_MAX_INDIVIDUAL_BORROW_SIZE = "85";
string public constant AVL_EXCEED_BORROW_MAX_PERCENTAGE = "86";
string public constant AVL_INVALID_BORROW_MAX_PERCENTAGE = "87";
string public constant LP_USER_IS_BLACKLISTED = "88";
string public constant LP_USER_NOT_ELIGIBLE_FOR_BLACKLIST = "89";
enum CollateralManagerErrors {
NO_ERROR,
NO_COLLATERAL_AVAILABLE,
COLLATERAL_CANNOT_BE_LIQUIDATED,
CURRRENCY_NOT_BORROWED,
HEALTH_FACTOR_ABOVE_THRESHOLD,
NOT_ENOUGH_LIQUIDITY,
NO_ACTIVE_RESERVE,
HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD,
INVALID_EQUAL_ASSETS_TO_SWAP,
FROZEN_RESERVE
}
}
/
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
import {ILendingPool} from "./ILendingPool.sol";
/**
* @title IInitializableAToken
* @notice Interface for the initialize function on AToken
* @author Aave
**/
interface IInitializableAToken {
/**
* @dev Emitted when an aToken is initialized
* @param underlyingAsset The address of the underlying asset
* @param pool The address of the associated lending pool
* @param treasury The address of the treasury
* @param aTokenDecimals the decimals of the underlying
* @param aTokenName the name of the aToken
* @param aTokenSymbol the symbol of the aToken
* @param params A set of encoded parameters for additional initialization
**/
event Initialized(
address indexed underlyingAsset,
address indexed pool,
address treasury,
uint8 aTokenDecimals,
string aTokenName,
string aTokenSymbol,
bytes params
);
/**
* @dev Initializes the aToken
* @param pool The address of the lending pool where this aToken will be used
* @param treasury The address of the Aave treasury, receiving the fees on this aToken
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param aTokenDecimals The decimals of the aToken, same as the underlying asset's
* @param aTokenName The name of the aToken
* @param aTokenSymbol The symbol of the aToken
*/
function initialize(
ILendingPool pool,
address treasury,
address underlyingAsset,
uint8 aTokenDecimals,
string calldata aTokenName,
string calldata aTokenSymbol,
bytes calldata params
) external;
}
/
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
interface IScaledBalanceToken {
/**
* @dev Returns the scaled balance of the user. The scaled balance is the sum of all the
* updated stored balance divided by the reserve's liquidity index at the moment of the update
* @param user The user whose balance is calculated
* @return The scaled balance of the user
**/
function scaledBalanceOf(address user) external view returns (uint256);
/**
* @dev Returns the scaled balance of the user and the scaled total supply.
* @param user The address of the user
* @return The scaled balance of the user
* @return The scaled balance and the scaled total supply
**/
function getScaledUserBalanceAndSupply(address user)
external
view
returns (uint256, uint256);
/**
* @dev Returns the scaled total supply of the variable debt token. Represents sum(debt/index)
* @return The scaled total supply
**/
function scaledTotalSupply() external view returns (uint256);
}
/
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
pragma experimental ABIEncoderV2;
import {ILendingPoolAddressesProvider} from "./ILendingPoolAddressesProvider.sol";
import {DataTypes} from "../protocol/libraries/types/DataTypes.sol";
interface ILendingPool {
/**
* @dev Emitted on deposit()
* @param reserve The address of the underlying asset of the reserve
* @param user The address initiating the deposit
* @param onBehalfOf The beneficiary of the deposit, receiving the aTokens
* @param amount The amount deposited
* @param referral The referral code used
**/
event Deposit(
address indexed reserve,
address user,
address indexed onBehalfOf,
uint256 amount,
uint16 indexed referral
);
/**
* @dev Emitted on withdraw()
* @param reserve The address of the underlyng asset being withdrawn
* @param user The address initiating the withdrawal, owner of aTokens
* @param to Address that will receive the underlying
* @param amount The amount to be withdrawn
**/
event Withdraw(
address indexed reserve,
address indexed user,
address indexed to,
uint256 amount
);
/**
* @dev Emitted on borrow() and flashLoan() when debt needs to be opened
* @param reserve The address of the underlying asset being borrowed
* @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just
* initiator of the transaction on flashLoan()
* @param onBehalfOf The address that will be getting the debt
* @param amount The amount borrowed out
* @param borrowRateMode The rate mode: 1 for Stable, 2 for Variable
* @param borrowRate The numeric rate at which the user has borrowed
* @param referral The referral code used
**/
event Borrow(
address indexed reserve,
address user,
address indexed onBehalfOf,
uint256 amount,
uint256 borrowRateMode,
uint256 borrowRate,
uint16 indexed referral
);
/**
* @dev Emitted on repay()
* @param reserve The address of the underlying asset of the reserve
* @param user The beneficiary of the repayment, getting his debt reduced
* @param repayer The address of the user initiating the repay(), providing the funds
* @param amount The amount repaid
**/
event Repay(
address indexed reserve,
address indexed user,
address indexed repayer,
uint256 amount
);
/**
* @dev Emitted on swapBorrowRateMode()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user swapping his rate mode
* @param rateMode The rate mode that the user wants to swap to
**/
event Swap(address indexed reserve, address indexed user, uint256 rateMode);
/**
* @dev Emitted on setUserUseReserveAsCollateral()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user enabling the usage as collateral
**/
event ReserveUsedAsCollateralEnabled(
address indexed reserve,
address indexed user
);
/**
* @dev Emitted on setUserUseReserveAsCollateral()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user enabling the usage as collateral
**/
event ReserveUsedAsCollateralDisabled(
address indexed reserve,
address indexed user
);
/**
* @dev Emitted on rebalanceStableBorrowRate()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user for which the rebalance has been executed
**/
event RebalanceStableBorrowRate(
address indexed reserve,
address indexed user
);
/**
* @dev Emitted on flashLoan()
* @param target The address of the flash loan receiver contract
* @param initiator The address initiating the flash loan
* @param asset The address of the asset being flash borrowed
* @param amount The amount flash borrowed
* @param premium The fee flash borrowed
* @param referralCode The referral code used
**/
event FlashLoan(
address indexed target,
address indexed initiator,
address indexed asset,
uint256 amount,
uint256 premium,
uint16 referralCode
);
/**
* @dev Emitted when the pause is triggered.
*/
event Paused();
/**
* @dev Emitted when the pause is lifted.
*/
event Unpaused();
/**
* @dev Emitted when a borrower is liquidated. This event is emitted by the LendingPool via
* LendingPoolCollateral manager using a DELEGATECALL
* This allows to have the events in the generated ABI for LendingPool.
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param liquidatedCollateralAmount The amount of collateral received by the liiquidator
* @param liquidator The address of the liquidator
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
event LiquidationCall(
address indexed collateralAsset,
address indexed debtAsset,
address indexed user,
uint256 debtToCover,
uint256 liquidatedCollateralAmount,
address liquidator,
bool receiveAToken
);
/**
* @dev Emitted when a borrower is blacklisted.
* @param user The address of the borrower getting liquidated
**/
event Blacklist(address indexed user);
/**
* @dev Emitted when the state of a reserve is updated. NOTE: This event is actually declared
* in the ReserveLogic library and emitted in the updateInterestRates() function. Since the function is internal,
* the event will actually be fired by the LendingPool contract. The event is therefore replicated here so it
* gets added to the LendingPool ABI
* @param reserve The address of the underlying asset of the reserve
* @param liquidityRate The new liquidity rate
* @param stableBorrowRate The new stable borrow rate
* @param variableBorrowRate The new variable borrow rate
* @param liquidityIndex The new liquidity index
* @param variableBorrowIndex The new variable borrow index
**/
event ReserveDataUpdated(
address indexed reserve,
uint256 liquidityRate,
uint256 stableBorrowRate,
uint256 variableBorrowRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex
);
function isBlacklisted(address user) external returns (bool);
/**
* @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
* - E.g. User deposits 100 USDC and gets in return 100 aUSDC
* @param asset The address of the underlying asset to deposit
* @param amount The amount to be deposited
* @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
* wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
* is a different wallet
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function deposit(
address asset,
uint256 amount,
address onBehalfOf,
uint16 referralCode
) external;
/**
* @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
* E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
* @param asset The address of the underlying asset to withdraw
* @param amount The underlying amount to be withdrawn
* - Send the value type(uint256).max in order to withdraw the whole aToken balance
* @param to Address that will receive the underlying, same as msg.sender if the user
* wants to receive it on his own wallet, or a different address if the beneficiary is a
* different wallet
* @return The final amount withdrawn
**/
function withdraw(
address asset,
uint256 amount,
address to
) external returns (uint256);
/**
* @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
* already deposited enough collateral, or he was given enough allowance by a credit delegator on the
* corresponding debt token (StableDebtToken or VariableDebtToken)
* - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
* and 100 stable/variable debt tokens, depending on the `interestRateMode`
* @param asset The address of the underlying asset to borrow
* @param amount The amount to be borrowed
* @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
* @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
* calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
* if he has been given credit delegation allowance
**/
function borrow(
address asset,
uint256 amount,
uint256 interestRateMode,
uint16 referralCode,
address onBehalfOf
) external;
/**
* @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
* - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
* @param asset The address of the borrowed underlying asset previously borrowed
* @param amount The amount to repay
* - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
* @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
* @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
* user calling the function if he wants to reduce/remove his own debt, or the address of any other
* other borrower whose debt should be removed
* @return The final amount repaid
**/
function repay(
address asset,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) external returns (uint256);
/**
* @notice Repay all debts of the user and blacklist that user.
* @param user Address of the user who will get his debt removed. Should be the address of the
* user calling the function if he wants to reduce/remove his own debt, or the address of any other
* other borrower whose debt should be removed
**/
function repayAllAndBlacklist(address user) external;
/**
* @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
* @param asset The address of the underlying asset borrowed
* @param rateMode The rate mode that the user wants to swap to
**/
function swapBorrowRateMode(address asset, uint256 rateMode) external;
/**
* @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
* - Users can be rebalanced if the following conditions are satisfied:
* 1. Usage ratio is above 95%
* 2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
* borrowed at a stable rate and depositors are not earning enough
* @param asset The address of the underlying asset borrowed
* @param user The address of the user to be rebalanced
**/
function rebalanceStableBorrowRate(address asset, address user) external;
/**
* @dev Allows depositors to enable/disable a specific deposited asset as collateral
* @param asset The address of the underlying asset deposited
* @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
**/
function setUserUseReserveAsCollateral(address asset, bool useAsCollateral)
external;
/**
* @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
* - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
* a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
function liquidationCall(
address collateralAsset,
address debtAsset,
address user,
uint256 debtToCover,
bool receiveAToken
) external;
/**
* @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
* as long as the amount taken plus a fee is returned.
* IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
* For further details please visit https://developers.aave.com
* @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
* @param assets The addresses of the assets being flash-borrowed
* @param amounts The amounts amounts being flash-borrowed
* @param params Variadic packed params to pass to the receiver as extra information
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function flashLoan(
address receiverAddress,
address[] calldata assets,
uint256[] calldata amounts,
bytes calldata params,
uint16 referralCode
) external;
/**
* @dev Returns the user account data across all the reserves
* @param user The address of the user
* @return totalCollateralETH the total collateral in ETH of the user
* @return totalDebtETH the total debt in ETH of the user
* @return availableBorrowsETH the borrowing power left of the user
* @return currentLiquidationThreshold the liquidation threshold of the user
* @return ltv the loan to value of the user
* @return healthFactor the current health factor of the user
**/
function getUserAccountData(address user)
external
view
returns (
uint256 totalCollateralETH,
uint256 totalDebtETH,
uint256 availableBorrowsETH,
uint256 currentLiquidationThreshold,
uint256 ltv,
uint256 healthFactor
);
function initReserve(
address reserve,
address aTokenAddress,
address stableDebtAddress,
address variableDebtAddress,
address interestRateStrategyAddress
) external;
function setReserveInterestRateStrategyAddress(
address reserve,
address rateStrategyAddress
) external;
function setConfiguration(address reserve, uint256 configuration) external;
function setLimits(
address reserve,
DataTypes.ReserveLimits calldata reserveLimits
) external;
/**
* @dev Returns the configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The configuration of the reserve
**/
function getConfiguration(address asset)
external
view
returns (DataTypes.ReserveConfigurationMap memory);
/**
* @dev Returns the configuration of the user across all the reserves
* @param user The user address
* @return The configuration of the user
**/
function getUserConfiguration(address user)
external
view
returns (DataTypes.UserConfigurationMap memory);
/**
* @dev Returns the normalized income normalized income of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The reserve's normalized income
*/
function getReserveNormalizedIncome(address asset)
external
view
returns (uint256);
/**
* @dev Returns the normalized variable debt per unit of asset
* @param asset The address of the underlying asset of the reserve
* @return The reserve normalized variable debt
*/
function getReserveNormalizedVariableDebt(address asset)
external
view
returns (uint256);
/**
* @dev Returns the state and configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The state of the reserve
**/
function getReserveData(address asset)
external
view
returns (DataTypes.ReserveData memory);
/**
* @dev Returns the limits of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The limits of the reserve
**/
function getReserveLimits(address asset)
external
view
returns (DataTypes.ReserveLimits memory);
function finalizeTransfer(
address asset,
address from,
address to,
uint256 amount,
uint256 balanceFromAfter,
uint256 balanceToBefore
) external;
function getReservesList() external view returns (address[] memory);
function getAddressesProvider()
external
view
returns (ILendingPoolAddressesProvider);
function setPause(bool val) external;
function paused() external view returns (bool);
function FLASHLOAN_PREMIUM_TOTAL() external view returns (uint256);
}
/
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.6;
import {IERC20} from "../dependencies/openzeppelin/contracts/IERC20.sol";
import {IScaledBalanceToken} from "./IScaledBalanceToken.sol";
import {IInitializableAToken} from "./IInitializableAToken.sol";
import {IPhiatIncentivesController} from "./IPhiatIncentivesController.sol";
interface IAToken is IERC20, IScaledBalanceToken, IInitializableAToken {
/**
* @dev Emitted after the mint action
* @param from The address performing the mint
* @param value The amount being
* @param index The new liquidity index of the reserve
**/
event Mint(address indexed from, uint256 value, uint256 index);
/**
* @dev Mints `amount` aTokens to `user`
* @param user The address receiving the minted tokens
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
* @return `true` if the the previous balance of the user was 0
*/
function mint(
address user,
uint256 amount,
uint256 index
) external returns (bool);
/**
* @dev Emitted after aTokens are burned
* @param from The owner of the aTokens, getting them burned
* @param target The address that will receive the underlying
* @param value The amount being burned
* @param index The new liquidity index of the reserve
**/
event Burn(
address indexed from,
address indexed target,
uint256 value,
uint256 index
);
/**
* @dev Emitted during the transfer action
* @param from The user whose tokens are being transferred
* @param to The recipient
* @param value The amount being transferred
* @param index The new liquidity index of the reserve
**/
event BalanceTransfer(
address indexed from,
address indexed to,
uint256 value,
uint256 index
);
/**
* @dev Burns aTokens from `user` and sends the equivalent amount of underlying to `receiverOfUnderlying`
* @param user The owner of the aTokens, getting them burned
* @param receiverOfUnderlying The address that will receive the underlying
* @param amount The amount being burned
* @param index The new liquidity index of the reserve
**/
function burn(
address user,
address receiverOfUnderlying,
uint256 amount,
uint256 index
) external;
/**
* @dev Mints aTokens to the reserve treasury
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
*/
function mintToTreasury(uint256 amount, uint256 index) external;
/**
* @dev Transfers aTokens in the event of a borrow being liquidated, in case the liquidators reclaims the aToken
* @param from The address getting liquidated, current owner of the aTokens
* @param to The recipient
* @param value The amount of tokens getting transferred
**/
function transferOnLiquidation(
address from,
address to,
uint256 value
) external;
/**
* @dev Transfers the underlying asset to `target`. Used by the LendingPool to transfer
* assets in borrow(), withdraw() and flashLoan()
* @param user The recipient of the underlying
* @param amount The amount getting transferred
* @return The amount transferred
**/
function transferUnderlyingTo(address user, uint256 amount)
external
returns (uint256);
/**
* @dev Invoked to execute actions on the aToken side after a repayment.
* @param user The user executing the repayment
* @param amount The amount getting repaid
**/
function handleRepayment(address user, uint256 amount) external;
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController()
external
view
returns (IPhiatIncentivesController);
/**
* @dev Returns the address of treasury
**/
function RESERVE_TREASURY_ADDRESS() external view returns (address);
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() external view returns (address);
}
Compiler Settings
{"remappings":[],"optimizer":{"runs":200,"enabled":true},"metadata":{"bytecodeHash":"ipfs"},"libraries":{},"evmVersion":"istanbul","compilationTarget":{"contracts/protocol/tokenization/AToken.sol":"AToken"}}
Contract ABI
[{"type":"event","name":"Approval","inputs":[{"type":"address","name":"owner","internalType":"address","indexed":true},{"type":"address","name":"spender","internalType":"address","indexed":true},{"type":"uint256","name":"value","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"BalanceTransfer","inputs":[{"type":"address","name":"from","internalType":"address","indexed":true},{"type":"address","name":"to","internalType":"address","indexed":true},{"type":"uint256","name":"value","internalType":"uint256","indexed":false},{"type":"uint256","name":"index","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"Burn","inputs":[{"type":"address","name":"from","internalType":"address","indexed":true},{"type":"address","name":"target","internalType":"address","indexed":true},{"type":"uint256","name":"value","internalType":"uint256","indexed":false},{"type":"uint256","name":"index","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"Initialized","inputs":[{"type":"address","name":"underlyingAsset","internalType":"address","indexed":true},{"type":"address","name":"pool","internalType":"address","indexed":true},{"type":"address","name":"treasury","internalType":"address","indexed":false},{"type":"uint8","name":"aTokenDecimals","internalType":"uint8","indexed":false},{"type":"string","name":"aTokenName","internalType":"string","indexed":false},{"type":"string","name":"aTokenSymbol","internalType":"string","indexed":false},{"type":"bytes","name":"params","internalType":"bytes","indexed":false}],"anonymous":false},{"type":"event","name":"Mint","inputs":[{"type":"address","name":"from","internalType":"address","indexed":true},{"type":"uint256","name":"value","internalType":"uint256","indexed":false},{"type":"uint256","name":"index","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"type":"address","name":"from","internalType":"address","indexed":true},{"type":"address","name":"to","internalType":"address","indexed":true},{"type":"uint256","name":"value","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"ATOKEN_REVISION","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes32","name":"","internalType":"bytes32"}],"name":"DOMAIN_SEPARATOR","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes","name":"","internalType":"bytes"}],"name":"EIP712_REVISION","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes32","name":"","internalType":"bytes32"}],"name":"PERMIT_TYPEHASH","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"contract ILendingPool"}],"name":"POOL","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"RESERVE_TREASURY_ADDRESS","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"UNDERLYING_ASSET_ADDRESS","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"_nonces","inputs":[{"type":"address","name":"","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"allowance","inputs":[{"type":"address","name":"owner","internalType":"address"},{"type":"address","name":"spender","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"approve","inputs":[{"type":"address","name":"spender","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"balanceOf","inputs":[{"type":"address","name":"user","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"burn","inputs":[{"type":"address","name":"user","internalType":"address"},{"type":"address","name":"receiverOfUnderlying","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"uint256","name":"index","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint8","name":"","internalType":"uint8"}],"name":"decimals","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"decreaseAllowance","inputs":[{"type":"address","name":"spender","internalType":"address"},{"type":"uint256","name":"subtractedValue","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"contract IPhiatIncentivesController"}],"name":"getIncentivesController","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"},{"type":"uint256","name":"","internalType":"uint256"}],"name":"getScaledUserBalanceAndSupply","inputs":[{"type":"address","name":"user","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"handleRepayment","inputs":[{"type":"address","name":"user","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"increaseAllowance","inputs":[{"type":"address","name":"spender","internalType":"address"},{"type":"uint256","name":"addedValue","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"initialize","inputs":[{"type":"address","name":"pool","internalType":"contract ILendingPool"},{"type":"address","name":"treasury","internalType":"address"},{"type":"address","name":"underlyingAsset","internalType":"address"},{"type":"uint8","name":"aTokenDecimals","internalType":"uint8"},{"type":"string","name":"aTokenName","internalType":"string"},{"type":"string","name":"aTokenSymbol","internalType":"string"},{"type":"bytes","name":"params","internalType":"bytes"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"mint","inputs":[{"type":"address","name":"user","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"uint256","name":"index","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"mintToTreasury","inputs":[{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"uint256","name":"index","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"","internalType":"string"}],"name":"name","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"permit","inputs":[{"type":"address","name":"owner","internalType":"address"},{"type":"address","name":"spender","internalType":"address"},{"type":"uint256","name":"value","internalType":"uint256"},{"type":"uint256","name":"deadline","internalType":"uint256"},{"type":"uint8","name":"v","internalType":"uint8"},{"type":"bytes32","name":"r","internalType":"bytes32"},{"type":"bytes32","name":"s","internalType":"bytes32"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"scaledBalanceOf","inputs":[{"type":"address","name":"user","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"scaledTotalSupply","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"","internalType":"string"}],"name":"symbol","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"totalSupply","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"transfer","inputs":[{"type":"address","name":"recipient","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"transferFrom","inputs":[{"type":"address","name":"sender","internalType":"address"},{"type":"address","name":"recipient","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOnLiquidation","inputs":[{"type":"address","name":"from","internalType":"address"},{"type":"address","name":"to","internalType":"address"},{"type":"uint256","name":"value","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"transferUnderlyingTo","inputs":[{"type":"address","name":"target","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]}]
Contract Creation Code
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