Polygon Sponsored slots available. Book your slot here!
More Info
Private Name Tags
ContractCreator
TokenTracker
Latest 25 from a total of 112 transactions
| Transaction Hash |
|
Block
|
From
|
To
|
|||||
|---|---|---|---|---|---|---|---|---|---|
| Deposit | 82693638 | 38 hrs ago | IN | 0 POL | 0.17611938 | ||||
| Deposit | 82684230 | 43 hrs ago | IN | 0 POL | 0.35682258 | ||||
| Approve | 82683204 | 44 hrs ago | IN | 0 POL | 0.07618221 | ||||
| Deposit | 82683163 | 44 hrs ago | IN | 0 POL | 0.38607461 | ||||
| Approve | 82680482 | 45 hrs ago | IN | 0 POL | 0.02271017 | ||||
| Deposit | 82680389 | 45 hrs ago | IN | 0 POL | 0.14170877 | ||||
| Approve | 82642488 | 2 days ago | IN | 0 POL | 0.02315047 | ||||
| Approve | 82642472 | 2 days ago | IN | 0 POL | 0.04352992 | ||||
| Deposit | 82642427 | 2 days ago | IN | 0 POL | 0.142103 | ||||
| Deposit | 82642398 | 2 days ago | IN | 0 POL | 0.19401242 | ||||
| Deposit | 82381792 | 8 days ago | IN | 0 POL | 0.18171509 | ||||
| Redeem | 82192989 | 13 days ago | IN | 0 POL | 0.07994422 | ||||
| Redeem | 82192505 | 13 days ago | IN | 0 POL | 0.11899095 | ||||
| Approve | 82155535 | 14 days ago | IN | 0 POL | 0.02085486 | ||||
| Redeem | 82054834 | 16 days ago | IN | 0 POL | 0.03154176 | ||||
| Approve | 81726209 | 23 days ago | IN | 0 POL | 0.02781259 | ||||
| Redeem | 81571268 | 27 days ago | IN | 0 POL | 0.05441667 | ||||
| Redeem | 81570781 | 27 days ago | IN | 0 POL | 0.03475008 | ||||
| Approve | 81570103 | 27 days ago | IN | 0 POL | 0.00634732 | ||||
| Deposit | 81570081 | 27 days ago | IN | 0 POL | 0.02913896 | ||||
| Deposit | 81569992 | 27 days ago | IN | 0 POL | 0.02922872 | ||||
| Approve | 81569836 | 27 days ago | IN | 0 POL | 0.00801264 | ||||
| Approve | 81569834 | 27 days ago | IN | 0 POL | 0.00988134 | ||||
| Deposit | 81569821 | 27 days ago | IN | 0 POL | 0.04400844 | ||||
| Approve | 81569801 | 27 days ago | IN | 0 POL | 0.00871326 |
Cross-Chain Transactions
Loading...
Loading
Contract Name:
WrappedRainVault
Compiler Version
v0.8.31+commit.fd3a2265
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {ERC4626} from "@openzeppelin/contracts/token/ERC20/extensions/ERC4626.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
/// @title Wrapped RAIN Vault (wRAIN)
/// @notice ERC4626 vault for reflection tokens with fair distribution mechanics
/// @dev Key Features:
/// - Deposits: NAV-based share minting (new depositors pay current share price)
/// - Reflections: Automatically increase totalAssets, benefiting all shareholders proportionally
/// - Withdrawals: Pro-rata claim on total assets (principal + accumulated reflections)
/// - Share Price: Monotonically increases as reflections accumulate (like LP tokens)
///
/// REFLECTION MECHANICS:
/// 1. Alice deposits 100 RAIN (after 10% tax: 90 received) → gets 90 shares
/// 2. Reflections increase vault balance from 90 to 100 RAIN
/// 3. Share price: 100 RAIN / 90 shares = 1.111 RAIN per share
/// 4. Bob deposits 100 RAIN (after tax: 90 received) → gets 81 shares (90 / 1.111)
/// 5. Alice: 90 shares = 52.63% of vault = 52.63 RAIN ✓
/// Bob: 81 shares = 47.37% of vault = 47.37 RAIN ✓
///
contract WrappedRainVault is ERC4626, ReentrancyGuard, Ownable {
using SafeERC20 for IERC20;
/// @notice Emitted when a user's reflection earnings can be calculated
/// @param user Address of the shareholder
/// @param shares User's share balance
/// @param assets User's total claim (principal + reflections)
event ReflectionSnapshot(address indexed user, uint256 shares, uint256 assets);
constructor(IERC20 _underlying)
ERC20("Wrapped Rain Coin", "wRAIN")
ERC4626(_underlying)
Ownable(msg.sender)
{
require(address(_underlying) != address(0), "wRAIN: underlying zero");
}
// ========================================================================
// View Functions - Asset Accounting
// ========================================================================
/// @notice Total underlying RAIN held by vault (includes all reflections)
/// @dev This balance increases over time as reflections accumulate
function totalAssets() public view override returns (uint256) {
return IERC20(asset()).balanceOf(address(this));
}
/// @notice Current share price (assets per share)
/// @dev Returns 1e18 scaled value. Example: 1.5e18 = 1.5 RAIN per share
function sharePrice() public view returns (uint256) {
uint256 supply = totalSupply();
if (supply == 0) {
return 1e18; // Initial price: 1 RAIN = 1 share
}
return (totalAssets() * 1e18) / supply;
}
/// @notice Calculate accumulated reflections for a user
/// @param account Address to check
/// @return principal Estimated initial deposit (approximation)
/// @return reflections Accumulated reflection earnings
/// @return total Total claim (principal + reflections)
function getReflectionBreakdown(address account)
public
view
returns (uint256 principal, uint256 reflections, uint256 total)
{
uint256 shares = balanceOf(account);
total = convertToAssets(shares);
// Approximation: assume user bought shares at average historical price
// In practice, you'd need to track deposit history for exact principal
principal = shares; // Conservative estimate (assumes 1:1 entry)
if (total > principal) {
reflections = total - principal;
} else {
principal = total;
reflections = 0;
}
}
// ========================================================================
// ERC4626 Conversion Functions
// ========================================================================
/// @notice Convert asset amount to shares at current NAV
/// @dev Uses current share price. First depositor gets 1:1.
/// @param assets Amount of RAIN (post-tax)
/// @return shares Equivalent shares at current price
function convertToShares(uint256 assets)
public
view
override
returns (uint256 shares)
{
uint256 supply = totalSupply();
uint256 totalBalance = totalAssets();
// First deposit: 1:1 ratio
if (supply == 0 || totalBalance == 0) {
return assets;
}
// NAV-based: shares = assets * totalSupply / totalAssets
// This ensures new depositors buy at current market price
return (assets * supply) / totalBalance;
}
/// @notice Convert shares to assets at current NAV
/// @dev Pro-rata claim on total vault assets
/// Returns 0 if vault is empty (ERC4626 standard behavior)
/// @param shares Amount of wRAIN shares
/// @return assets Equivalent RAIN (includes reflections)
function convertToAssets(uint256 shares)
public
view
override
returns (uint256 assets)
{
uint256 supply = totalSupply();
uint256 total = totalAssets();
// ERC4626 standard: return 0 if vault is empty
// Shares have no value when there are no assets
if (supply == 0 || total == 0) {
return 0;
}
// Pro-rata: assets = shares * totalAssets / totalSupply
return (shares * total) / supply;
}
// ========================================================================
// ERC4626 Preview Functions
// ========================================================================
/// @notice Preview shares for depositing `assets` RAIN
/// @dev Note: Actual received amount will be less due to reflection tax
/// This preview assumes the full `assets` amount is received
function previewDeposit(uint256 assets)
public
view
override
returns (uint256)
{
return convertToShares(assets);
}
/// @notice Mint-by-shares not supported for fee-on-transfer tokens
function previewMint(uint256 /*shares*/)
public
pure
override
returns (uint256)
{
return type(uint256).max;
}
/// @notice Preview assets when redeeming `shares`
/// @dev Returns pro-rata claim including reflections
function previewRedeem(uint256 shares)
public
view
override
returns (uint256)
{
return convertToAssets(shares);
}
/// @notice Preview shares needed to withdraw `assets`
/// @dev Rounds up to ensure sufficient shares are burned
/// Returns 0 if vault is empty (consistent with withdraw() reverting)
function previewWithdraw(uint256 assets)
public
view
override
returns (uint256)
{
uint256 supply = totalSupply();
uint256 total = totalAssets();
// Return 0 if vault is empty (matches withdraw() revert behavior)
if (supply == 0 || total == 0) {
return 0;
}
// Ceiling division: shares = ⌈assets * supply / total⌉
uint256 numerator = assets * supply;
return (numerator + total - 1) / total;
}
// ========================================================================
// ERC4626 Limit Functions
// ========================================================================
function maxDeposit(address)
public
pure
override
returns (uint256)
{
return type(uint256).max;
}
function maxMint(address)
public
pure
override
returns (uint256)
{
return 0; // Mint not supported
}
function maxWithdraw(address owner)
public
view
override
returns (uint256)
{
return convertToAssets(balanceOf(owner));
}
function maxRedeem(address owner)
public
view
override
returns (uint256)
{
return balanceOf(owner);
}
// ========================================================================
// Core ERC4626 Operations
// ========================================================================
/// @notice Deposit RAIN and receive wRAIN shares at current price
/// @dev Measures actual tokens received (accounts for reflection tax)
/// Share price ensures fair distribution:
/// - First depositor: 1:1 with received amount
/// - Later depositors: NAV-based (pay current share price)
///
/// Security: MIN_DEPOSIT (1e8) prevents inflation attacks and spam
///
/// @param assets Max RAIN to pull from msg.sender (pre-tax amount)
/// @param receiver Address to receive wRAIN shares
/// @return shares Amount of wRAIN minted
function deposit(uint256 assets, address receiver)
public
override
nonReentrant
returns (uint256 shares)
{
require(assets > 0, "wRAIN: zero assets");
require(receiver != address(0), "wRAIN: receiver zero");
IERC20 _asset = IERC20(asset());
// Snapshot state before deposit
uint256 totalBefore = totalAssets();
uint256 supplyBefore = totalSupply();
// Measure actual tokens received (handles reflection tax)
_asset.safeTransferFrom(msg.sender, address(this), assets);
uint256 totalAfter = totalAssets();
uint256 received = totalAfter - totalBefore;
require(received > 0, "wRAIN: no tokens received");
require(received >= MIN_DEPOSIT, "wRAIN: deposit below minimum");
// Calculate shares at current price
if (supplyBefore == 0 || totalBefore == 0) {
// First deposit: 1:1 with net received
shares = received;
} else {
// NAV-based pricing: prevents dilution of existing shareholders
// shares = received * supplyBefore / totalBefore
shares = (received * supplyBefore) / totalBefore;
require(shares > 0, "wRAIN: zero shares minted");
}
_mint(receiver, shares);
emit Deposit(msg.sender, receiver, received, shares);
}
/// @notice Mint exact shares not supported (incompatible with fee-on-transfer)
function mint(uint256 /*shares*/, address /*receiver*/)
public
pure
override
returns (uint256)
{
revert("wRAIN: mint not supported");
}
/// @notice Withdraw exact `assets` RAIN, burning necessary shares
/// @dev Rounds up shares to ensure sufficient amount is burned
/// Withdrawn assets include user's share of reflections
///
/// IMPORTANT: Due to RAIN's 1% reflection tax, the actual amount
/// received by the user will be approximately 99% of the `assets`
/// parameter. This is expected behavior inherent to the underlying
/// token mechanics. The vault sends the exact `assets` amount, but
/// the reflection tax is applied during the transfer.
///
/// @param assets Amount of RAIN to withdraw (pre-tax)
/// @param receiver Address to receive RAIN
/// @param owner Address whose shares will be burned
/// @return shares Amount of wRAIN burned
function withdraw(
uint256 assets,
address receiver,
address owner
)
public
override
nonReentrant
returns (uint256 shares)
{
require(assets > 0, "wRAIN: zero assets");
require(receiver != address(0), "wRAIN: receiver zero");
require(owner != address(0), "wRAIN: owner zero");
uint256 supply = totalSupply();
uint256 total = totalAssets();
require(supply > 0 && total > 0, "wRAIN: empty vault");
require(total >= assets, "wRAIN: insufficient assets");
// Calculate shares needed (round up)
uint256 numerator = assets * supply;
shares = (numerator + total - 1) / total;
// Handle allowance if not owner
if (msg.sender != owner) {
_spendAllowance(owner, msg.sender, shares);
}
// Burn shares and transfer assets
_burn(owner, shares);
IERC20(asset()).safeTransfer(receiver, assets);
emit Withdraw(msg.sender, receiver, owner, assets, shares);
}
/// @notice Redeem wRAIN shares for pro-rata RAIN (including reflections)
/// @dev This is the most common withdrawal method
/// User gets their proportional share of all vault assets
///
/// IMPORTANT: Due to RAIN's 1% reflection tax, the actual amount
/// received by the user will be approximately 99% of the calculated
/// `assets` value. This is expected behavior inherent to the underlying
/// token mechanics.
///
/// @param shares Amount of wRAIN to burn
/// @param receiver Address to receive RAIN
/// @param owner Address whose shares will be burned
/// @return assets Amount of RAIN transferred (pre-tax calculation)
function redeem(
uint256 shares,
address receiver,
address owner
)
public
override
nonReentrant
returns (uint256 assets)
{
require(shares > 0, "wRAIN: zero shares");
require(receiver != address(0), "wRAIN: receiver zero");
require(owner != address(0), "wRAIN: owner zero");
uint256 supply = totalSupply();
uint256 total = totalAssets();
require(supply > 0 && total > 0, "wRAIN: empty vault");
// Handle allowance if not owner
if (msg.sender != owner) {
_spendAllowance(owner, msg.sender, shares);
}
// Calculate pro-rata assets (includes reflections)
assets = (shares * total) / supply;
// Burn shares and transfer assets
_burn(owner, shares);
IERC20(asset()).safeTransfer(receiver, assets);
emit Withdraw(msg.sender, receiver, owner, assets, shares);
}
// ========================================================================
// Security Parameters
// ========================================================================
/// @notice Minimum deposit to prevent inflation attacks and spam (0.0000000001 RAIN)
/// @dev Protects against first depositor attack while remaining accessible
uint256 public constant MIN_DEPOSIT = 1e8;
// ========================================================================
// Helper Functions
// ========================================================================
/// @notice Emit reflection snapshot for a user (for tracking purposes)
/// @param user Address to snapshot
function snapshotReflections(address user) external {
uint256 shares = balanceOf(user);
uint256 assets = convertToAssets(shares);
emit ReflectionSnapshot(user, shares, assets);
}
/// @notice Emergency function to recover accidentally sent tokens
/// @dev Cannot withdraw the underlying RAIN token (vault assets)
/// @param token ERC20 token to recover
/// @param amount Amount to recover
function recoverERC20(address token, uint256 amount) external onlyOwner {
require(token != asset(), "wRAIN: cannot withdraw vault assets");
IERC20(token).safeTransfer(owner(), amount);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
pragma solidity ^0.8.20;
import {Context} from "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* The initial owner is set to the address provided by the deployer. This can
* later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
/**
* @dev The caller account is not authorized to perform an operation.
*/
error OwnableUnauthorizedAccount(address account);
/**
* @dev The owner is not a valid owner account. (eg. `address(0)`)
*/
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the address provided by the deployer as the initial owner.
*/
constructor(address initialOwner) {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)
pragma solidity ^0.8.20;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
* consider using {ReentrancyGuardTransient} instead.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant NOT_ENTERED = 1;
uint256 private constant ENTERED = 2;
uint256 private _status;
/**
* @dev Unauthorized reentrant call.
*/
error ReentrancyGuardReentrantCall();
constructor() {
_status = NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be NOT_ENTERED
if (_status == ENTERED) {
revert ReentrancyGuardReentrantCall();
}
// Any calls to nonReentrant after this point will fail
_status = ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = NOT_ENTERED;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == ENTERED;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC-20 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 {
/**
* @dev An operation with an ERC-20 token failed.
*/
error SafeERC20FailedOperation(address token);
/**
* @dev Indicates a failed `decreaseAllowance` request.
*/
error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
}
/**
* @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
*/
function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
}
/**
* @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
*/
function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*
* IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
* smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
* this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
* that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
forceApprove(token, spender, oldAllowance + value);
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
* value, non-reverting calls are assumed to be successful.
*
* IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
* smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
* this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
* that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
*/
function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
unchecked {
uint256 currentAllowance = token.allowance(address(this), spender);
if (currentAllowance < requestedDecrease) {
revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
}
forceApprove(token, spender, currentAllowance - requestedDecrease);
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
* to be set to zero before setting it to a non-zero value, such as USDT.
*
* NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
* only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
* set here.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
safeTransfer(token, to, value);
} else if (!token.transferAndCall(to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
* has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferFromAndCallRelaxed(
IERC1363 token,
address from,
address to,
uint256 value,
bytes memory data
) internal {
if (to.code.length == 0) {
safeTransferFrom(token, from, to, value);
} else if (!token.transferFromAndCall(from, to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
* Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
* once without retrying, and relies on the returned value to be true.
*
* Reverts if the returned value is other than `true`.
*/
function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
forceApprove(token, to, value);
} else if (!token.approveAndCall(to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @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).
*
* This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
uint256 returnSize;
uint256 returnValue;
assembly ("memory-safe") {
let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
// bubble errors
if iszero(success) {
let ptr := mload(0x40)
returndatacopy(ptr, 0, returndatasize())
revert(ptr, returndatasize())
}
returnSize := returndatasize()
returnValue := mload(0)
}
if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @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).
*
* This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
bool success;
uint256 returnSize;
uint256 returnValue;
assembly ("memory-safe") {
success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
returnSize := returndatasize()
returnValue := mload(0)
}
return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/extensions/ERC4626.sol)
pragma solidity ^0.8.20;
import {IERC20, IERC20Metadata, ERC20} from "../ERC20.sol";
import {SafeERC20} from "../utils/SafeERC20.sol";
import {IERC4626} from "../../../interfaces/IERC4626.sol";
import {Math} from "../../../utils/math/Math.sol";
/**
* @dev Implementation of the ERC-4626 "Tokenized Vault Standard" as defined in
* https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
*
* This extension allows the minting and burning of "shares" (represented using the ERC-20 inheritance) in exchange for
* underlying "assets" through standardized {deposit}, {mint}, {redeem} and {burn} workflows. This contract extends
* the ERC-20 standard. Any additional extensions included along it would affect the "shares" token represented by this
* contract and not the "assets" token which is an independent contract.
*
* [CAUTION]
* ====
* In empty (or nearly empty) ERC-4626 vaults, deposits are at high risk of being stolen through frontrunning
* with a "donation" to the vault that inflates the price of a share. This is variously known as a donation or inflation
* attack and is essentially a problem of slippage. Vault deployers can protect against this attack by making an initial
* deposit of a non-trivial amount of the asset, such that price manipulation becomes infeasible. Withdrawals may
* similarly be affected by slippage. Users can protect against this attack as well as unexpected slippage in general by
* verifying the amount received is as expected, using a wrapper that performs these checks such as
* https://github.com/fei-protocol/ERC4626#erc4626router-and-base[ERC4626Router].
*
* Since v4.9, this implementation introduces configurable virtual assets and shares to help developers mitigate that risk.
* The `_decimalsOffset()` corresponds to an offset in the decimal representation between the underlying asset's decimals
* and the vault decimals. This offset also determines the rate of virtual shares to virtual assets in the vault, which
* itself determines the initial exchange rate. While not fully preventing the attack, analysis shows that the default
* offset (0) makes it non-profitable even if an attacker is able to capture value from multiple user deposits, as a result
* of the value being captured by the virtual shares (out of the attacker's donation) matching the attacker's expected gains.
* With a larger offset, the attack becomes orders of magnitude more expensive than it is profitable. More details about the
* underlying math can be found xref:ROOT:erc4626.adoc#inflation-attack[here].
*
* The drawback of this approach is that the virtual shares do capture (a very small) part of the value being accrued
* to the vault. Also, if the vault experiences losses, the users try to exit the vault, the virtual shares and assets
* will cause the first user to exit to experience reduced losses in detriment to the last users that will experience
* bigger losses. Developers willing to revert back to the pre-v4.9 behavior just need to override the
* `_convertToShares` and `_convertToAssets` functions.
*
* To learn more, check out our xref:ROOT:erc4626.adoc[ERC-4626 guide].
* ====
*/
abstract contract ERC4626 is ERC20, IERC4626 {
using Math for uint256;
IERC20 private immutable _asset;
uint8 private immutable _underlyingDecimals;
/**
* @dev Attempted to deposit more assets than the max amount for `receiver`.
*/
error ERC4626ExceededMaxDeposit(address receiver, uint256 assets, uint256 max);
/**
* @dev Attempted to mint more shares than the max amount for `receiver`.
*/
error ERC4626ExceededMaxMint(address receiver, uint256 shares, uint256 max);
/**
* @dev Attempted to withdraw more assets than the max amount for `receiver`.
*/
error ERC4626ExceededMaxWithdraw(address owner, uint256 assets, uint256 max);
/**
* @dev Attempted to redeem more shares than the max amount for `receiver`.
*/
error ERC4626ExceededMaxRedeem(address owner, uint256 shares, uint256 max);
/**
* @dev Set the underlying asset contract. This must be an ERC20-compatible contract (ERC-20 or ERC-777).
*/
constructor(IERC20 asset_) {
(bool success, uint8 assetDecimals) = _tryGetAssetDecimals(asset_);
_underlyingDecimals = success ? assetDecimals : 18;
_asset = asset_;
}
/**
* @dev Attempts to fetch the asset decimals. A return value of false indicates that the attempt failed in some way.
*/
function _tryGetAssetDecimals(IERC20 asset_) private view returns (bool ok, uint8 assetDecimals) {
(bool success, bytes memory encodedDecimals) = address(asset_).staticcall(
abi.encodeCall(IERC20Metadata.decimals, ())
);
if (success && encodedDecimals.length >= 32) {
uint256 returnedDecimals = abi.decode(encodedDecimals, (uint256));
if (returnedDecimals <= type(uint8).max) {
return (true, uint8(returnedDecimals));
}
}
return (false, 0);
}
/**
* @dev Decimals are computed by adding the decimal offset on top of the underlying asset's decimals. This
* "original" value is cached during construction of the vault contract. If this read operation fails (e.g., the
* asset has not been created yet), a default of 18 is used to represent the underlying asset's decimals.
*
* See {IERC20Metadata-decimals}.
*/
function decimals() public view virtual override(IERC20Metadata, ERC20) returns (uint8) {
return _underlyingDecimals + _decimalsOffset();
}
/// @inheritdoc IERC4626
function asset() public view virtual returns (address) {
return address(_asset);
}
/// @inheritdoc IERC4626
function totalAssets() public view virtual returns (uint256) {
return IERC20(asset()).balanceOf(address(this));
}
/// @inheritdoc IERC4626
function convertToShares(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Math.Rounding.Floor);
}
/// @inheritdoc IERC4626
function convertToAssets(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Math.Rounding.Floor);
}
/// @inheritdoc IERC4626
function maxDeposit(address) public view virtual returns (uint256) {
return type(uint256).max;
}
/// @inheritdoc IERC4626
function maxMint(address) public view virtual returns (uint256) {
return type(uint256).max;
}
/// @inheritdoc IERC4626
function maxWithdraw(address owner) public view virtual returns (uint256) {
return _convertToAssets(balanceOf(owner), Math.Rounding.Floor);
}
/// @inheritdoc IERC4626
function maxRedeem(address owner) public view virtual returns (uint256) {
return balanceOf(owner);
}
/// @inheritdoc IERC4626
function previewDeposit(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Math.Rounding.Floor);
}
/// @inheritdoc IERC4626
function previewMint(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Math.Rounding.Ceil);
}
/// @inheritdoc IERC4626
function previewWithdraw(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Math.Rounding.Ceil);
}
/// @inheritdoc IERC4626
function previewRedeem(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Math.Rounding.Floor);
}
/// @inheritdoc IERC4626
function deposit(uint256 assets, address receiver) public virtual returns (uint256) {
uint256 maxAssets = maxDeposit(receiver);
if (assets > maxAssets) {
revert ERC4626ExceededMaxDeposit(receiver, assets, maxAssets);
}
uint256 shares = previewDeposit(assets);
_deposit(_msgSender(), receiver, assets, shares);
return shares;
}
/// @inheritdoc IERC4626
function mint(uint256 shares, address receiver) public virtual returns (uint256) {
uint256 maxShares = maxMint(receiver);
if (shares > maxShares) {
revert ERC4626ExceededMaxMint(receiver, shares, maxShares);
}
uint256 assets = previewMint(shares);
_deposit(_msgSender(), receiver, assets, shares);
return assets;
}
/// @inheritdoc IERC4626
function withdraw(uint256 assets, address receiver, address owner) public virtual returns (uint256) {
uint256 maxAssets = maxWithdraw(owner);
if (assets > maxAssets) {
revert ERC4626ExceededMaxWithdraw(owner, assets, maxAssets);
}
uint256 shares = previewWithdraw(assets);
_withdraw(_msgSender(), receiver, owner, assets, shares);
return shares;
}
/// @inheritdoc IERC4626
function redeem(uint256 shares, address receiver, address owner) public virtual returns (uint256) {
uint256 maxShares = maxRedeem(owner);
if (shares > maxShares) {
revert ERC4626ExceededMaxRedeem(owner, shares, maxShares);
}
uint256 assets = previewRedeem(shares);
_withdraw(_msgSender(), receiver, owner, assets, shares);
return assets;
}
/**
* @dev Internal conversion function (from assets to shares) with support for rounding direction.
*/
function _convertToShares(uint256 assets, Math.Rounding rounding) internal view virtual returns (uint256) {
return assets.mulDiv(totalSupply() + 10 ** _decimalsOffset(), totalAssets() + 1, rounding);
}
/**
* @dev Internal conversion function (from shares to assets) with support for rounding direction.
*/
function _convertToAssets(uint256 shares, Math.Rounding rounding) internal view virtual returns (uint256) {
return shares.mulDiv(totalAssets() + 1, totalSupply() + 10 ** _decimalsOffset(), rounding);
}
/**
* @dev Deposit/mint common workflow.
*/
function _deposit(address caller, address receiver, uint256 assets, uint256 shares) internal virtual {
// If asset() is ERC-777, `transferFrom` can trigger a reentrancy BEFORE the transfer happens through the
// `tokensToSend` hook. On the other hand, the `tokenReceived` hook, that is triggered after the transfer,
// calls the vault, which is assumed not malicious.
//
// Conclusion: we need to do the transfer before we mint so that any reentrancy would happen before the
// assets are transferred and before the shares are minted, which is a valid state.
// slither-disable-next-line reentrancy-no-eth
SafeERC20.safeTransferFrom(IERC20(asset()), caller, address(this), assets);
_mint(receiver, shares);
emit Deposit(caller, receiver, assets, shares);
}
/**
* @dev Withdraw/redeem common workflow.
*/
function _withdraw(
address caller,
address receiver,
address owner,
uint256 assets,
uint256 shares
) internal virtual {
if (caller != owner) {
_spendAllowance(owner, caller, shares);
}
// If asset() is ERC-777, `transfer` can trigger a reentrancy AFTER the transfer happens through the
// `tokensReceived` hook. On the other hand, the `tokensToSend` hook, that is triggered before the transfer,
// calls the vault, which is assumed not malicious.
//
// Conclusion: we need to do the transfer after the burn so that any reentrancy would happen after the
// shares are burned and after the assets are transferred, which is a valid state.
_burn(owner, shares);
SafeERC20.safeTransfer(IERC20(asset()), receiver, assets);
emit Withdraw(caller, receiver, owner, assets, shares);
}
function _decimalsOffset() internal view virtual returns (uint8) {
return 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
*
* TIP: For a detailed writeup see our guide
* https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC-20
* applications.
*/
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
mapping(address account => uint256) private _balances;
mapping(address account => mapping(address spender => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* Both values are immutable: they can only be set once during construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return 18;
}
/// @inheritdoc IERC20
function totalSupply() public view virtual returns (uint256) {
return _totalSupply;
}
/// @inheritdoc IERC20
function balanceOf(address account) public view virtual returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `value`.
*/
function transfer(address to, uint256 value) public virtual returns (bool) {
address owner = _msgSender();
_transfer(owner, to, value);
return true;
}
/// @inheritdoc IERC20
function allowance(address owner, address spender) public view virtual returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 value) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, value);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Skips emitting an {Approval} event indicating an allowance update. This is not
* required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `value`.
* - the caller must have allowance for ``from``'s tokens of at least
* `value`.
*/
function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, value);
_transfer(from, to, value);
return true;
}
/**
* @dev Moves a `value` amount of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* NOTE: This function is not virtual, {_update} should be overridden instead.
*/
function _transfer(address from, address to, uint256 value) internal {
if (from == address(0)) {
revert ERC20InvalidSender(address(0));
}
if (to == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(from, to, value);
}
/**
* @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
* (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
* this function.
*
* Emits a {Transfer} event.
*/
function _update(address from, address to, uint256 value) internal virtual {
if (from == address(0)) {
// Overflow check required: The rest of the code assumes that totalSupply never overflows
_totalSupply += value;
} else {
uint256 fromBalance = _balances[from];
if (fromBalance < value) {
revert ERC20InsufficientBalance(from, fromBalance, value);
}
unchecked {
// Overflow not possible: value <= fromBalance <= totalSupply.
_balances[from] = fromBalance - value;
}
}
if (to == address(0)) {
unchecked {
// Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
_totalSupply -= value;
}
} else {
unchecked {
// Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
_balances[to] += value;
}
}
emit Transfer(from, to, value);
}
/**
* @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
* Relies on the `_update` mechanism
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* NOTE: This function is not virtual, {_update} should be overridden instead.
*/
function _mint(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(address(0), account, value);
}
/**
* @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
* Relies on the `_update` mechanism.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* NOTE: This function is not virtual, {_update} should be overridden instead
*/
function _burn(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidSender(address(0));
}
_update(account, address(0), value);
}
/**
* @dev Sets `value` as the allowance of `spender` over the `owner`'s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*
* Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
*/
function _approve(address owner, address spender, uint256 value) internal {
_approve(owner, spender, value, true);
}
/**
* @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
*
* By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
* `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
* `Approval` event during `transferFrom` operations.
*
* Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
* true using the following override:
*
* ```solidity
* function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
* super._approve(owner, spender, value, true);
* }
* ```
*
* Requirements are the same as {_approve}.
*/
function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
if (owner == address(0)) {
revert ERC20InvalidApprover(address(0));
}
if (spender == address(0)) {
revert ERC20InvalidSpender(address(0));
}
_allowances[owner][spender] = value;
if (emitEvent) {
emit Approval(owner, spender, value);
}
}
/**
* @dev Updates `owner`'s allowance for `spender` based on spent `value`.
*
* Does not update the allowance value in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Does not emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance < type(uint256).max) {
if (currentAllowance < value) {
revert ERC20InsufficientAllowance(spender, currentAllowance, value);
}
unchecked {
_approve(owner, spender, currentAllowance - value, false);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)
pragma solidity >=0.4.16;
/**
* @dev Interface of the ERC-20 standard as defined in the ERC.
*/
interface IERC20 {
/**
* @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);
/**
* @dev Returns the value of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the value of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 value) 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 a `value` amount of tokens 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 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the
* allowance mechanism. `value` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 value) external returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)
pragma solidity >=0.6.2;
import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";
/**
* @title IERC1363
* @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
*
* Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
* after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
*/
interface IERC1363 is IERC20, IERC165 {
/*
* Note: the ERC-165 identifier for this interface is 0xb0202a11.
* 0xb0202a11 ===
* bytes4(keccak256('transferAndCall(address,uint256)')) ^
* bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
* bytes4(keccak256('approveAndCall(address,uint256)')) ^
* bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
*/
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @param data Additional data with no specified format, sent in call to `spender`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (utils/math/Math.sol)
pragma solidity ^0.8.20;
import {Panic} from "../Panic.sol";
import {SafeCast} from "./SafeCast.sol";
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Floor, // Toward negative infinity
Ceil, // Toward positive infinity
Trunc, // Toward zero
Expand // Away from zero
}
/**
* @dev Return the 512-bit addition of two uint256.
*
* The result is stored in two 256 variables such that sum = high * 2²⁵⁶ + low.
*/
function add512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
assembly ("memory-safe") {
low := add(a, b)
high := lt(low, a)
}
}
/**
* @dev Return the 512-bit multiplication of two uint256.
*
* The result is stored in two 256 variables such that product = high * 2²⁵⁶ + low.
*/
function mul512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
// 512-bit multiply [high low] = x * y. Compute the product mod 2²⁵⁶ and mod 2²⁵⁶ - 1, then use
// the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = high * 2²⁵⁶ + low.
assembly ("memory-safe") {
let mm := mulmod(a, b, not(0))
low := mul(a, b)
high := sub(sub(mm, low), lt(mm, low))
}
}
/**
* @dev Returns the addition of two unsigned integers, with a success flag (no overflow).
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
uint256 c = a + b;
success = c >= a;
result = c * SafeCast.toUint(success);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with a success flag (no overflow).
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
uint256 c = a - b;
success = c <= a;
result = c * SafeCast.toUint(success);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with a success flag (no overflow).
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
uint256 c = a * b;
assembly ("memory-safe") {
// Only true when the multiplication doesn't overflow
// (c / a == b) || (a == 0)
success := or(eq(div(c, a), b), iszero(a))
}
// equivalent to: success ? c : 0
result = c * SafeCast.toUint(success);
}
}
/**
* @dev Returns the division of two unsigned integers, with a success flag (no division by zero).
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
success = b > 0;
assembly ("memory-safe") {
// The `DIV` opcode returns zero when the denominator is 0.
result := div(a, b)
}
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero).
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
success = b > 0;
assembly ("memory-safe") {
// The `MOD` opcode returns zero when the denominator is 0.
result := mod(a, b)
}
}
}
/**
* @dev Unsigned saturating addition, bounds to `2²⁵⁶ - 1` instead of overflowing.
*/
function saturatingAdd(uint256 a, uint256 b) internal pure returns (uint256) {
(bool success, uint256 result) = tryAdd(a, b);
return ternary(success, result, type(uint256).max);
}
/**
* @dev Unsigned saturating subtraction, bounds to zero instead of overflowing.
*/
function saturatingSub(uint256 a, uint256 b) internal pure returns (uint256) {
(, uint256 result) = trySub(a, b);
return result;
}
/**
* @dev Unsigned saturating multiplication, bounds to `2²⁵⁶ - 1` instead of overflowing.
*/
function saturatingMul(uint256 a, uint256 b) internal pure returns (uint256) {
(bool success, uint256 result) = tryMul(a, b);
return ternary(success, result, type(uint256).max);
}
/**
* @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant.
*
* IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone.
* However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute
* one branch when needed, making this function more expensive.
*/
function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) {
unchecked {
// branchless ternary works because:
// b ^ (a ^ b) == a
// b ^ 0 == b
return b ^ ((a ^ b) * SafeCast.toUint(condition));
}
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return ternary(a > b, a, b);
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return ternary(a < b, a, b);
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds towards infinity instead
* of rounding towards zero.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
if (b == 0) {
// Guarantee the same behavior as in a regular Solidity division.
Panic.panic(Panic.DIVISION_BY_ZERO);
}
// The following calculation ensures accurate ceiling division without overflow.
// Since a is non-zero, (a - 1) / b will not overflow.
// The largest possible result occurs when (a - 1) / b is type(uint256).max,
// but the largest value we can obtain is type(uint256).max - 1, which happens
// when a = type(uint256).max and b = 1.
unchecked {
return SafeCast.toUint(a > 0) * ((a - 1) / b + 1);
}
}
/**
* @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
* denominator == 0.
*
* Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
* Uniswap Labs also under MIT license.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
(uint256 high, uint256 low) = mul512(x, y);
// Handle non-overflow cases, 256 by 256 division.
if (high == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return low / denominator;
}
// Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0.
if (denominator <= high) {
Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW));
}
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [high low].
uint256 remainder;
assembly ("memory-safe") {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
high := sub(high, gt(remainder, low))
low := sub(low, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator.
// Always >= 1. See https://cs.stackexchange.com/q/138556/92363.
uint256 twos = denominator & (0 - denominator);
assembly ("memory-safe") {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [high low] by twos.
low := div(low, twos)
// Flip twos such that it is 2²⁵⁶ / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from high into low.
low |= high * twos;
// Invert denominator mod 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such
// that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv ≡ 1 mod 2⁴.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
// works in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2⁸
inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶
inverse *= 2 - denominator * inverse; // inverse mod 2³²
inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴
inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸
inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2²⁵⁶. Since the preconditions guarantee that the outcome is
// less than 2²⁵⁶, this is the final result. We don't need to compute the high bits of the result and high
// is no longer required.
result = low * inverse;
return result;
}
}
/**
* @dev Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0);
}
/**
* @dev Calculates floor(x * y >> n) with full precision. Throws if result overflows a uint256.
*/
function mulShr(uint256 x, uint256 y, uint8 n) internal pure returns (uint256 result) {
unchecked {
(uint256 high, uint256 low) = mul512(x, y);
if (high >= 1 << n) {
Panic.panic(Panic.UNDER_OVERFLOW);
}
return (high << (256 - n)) | (low >> n);
}
}
/**
* @dev Calculates x * y >> n with full precision, following the selected rounding direction.
*/
function mulShr(uint256 x, uint256 y, uint8 n, Rounding rounding) internal pure returns (uint256) {
return mulShr(x, y, n) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, 1 << n) > 0);
}
/**
* @dev Calculate the modular multiplicative inverse of a number in Z/nZ.
*
* If n is a prime, then Z/nZ is a field. In that case all elements are inversible, except 0.
* If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible.
*
* If the input value is not inversible, 0 is returned.
*
* NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Fermat's little theorem and get the
* inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}.
*/
function invMod(uint256 a, uint256 n) internal pure returns (uint256) {
unchecked {
if (n == 0) return 0;
// The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version)
// Used to compute integers x and y such that: ax + ny = gcd(a, n).
// When the gcd is 1, then the inverse of a modulo n exists and it's x.
// ax + ny = 1
// ax = 1 + (-y)n
// ax ≡ 1 (mod n) # x is the inverse of a modulo n
// If the remainder is 0 the gcd is n right away.
uint256 remainder = a % n;
uint256 gcd = n;
// Therefore the initial coefficients are:
// ax + ny = gcd(a, n) = n
// 0a + 1n = n
int256 x = 0;
int256 y = 1;
while (remainder != 0) {
uint256 quotient = gcd / remainder;
(gcd, remainder) = (
// The old remainder is the next gcd to try.
remainder,
// Compute the next remainder.
// Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd
// where gcd is at most n (capped to type(uint256).max)
gcd - remainder * quotient
);
(x, y) = (
// Increment the coefficient of a.
y,
// Decrement the coefficient of n.
// Can overflow, but the result is casted to uint256 so that the
// next value of y is "wrapped around" to a value between 0 and n - 1.
x - y * int256(quotient)
);
}
if (gcd != 1) return 0; // No inverse exists.
return ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative.
}
}
/**
* @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`.
*
* From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is
* prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that
* `a**(p-2)` is the modular multiplicative inverse of a in Fp.
*
* NOTE: this function does NOT check that `p` is a prime greater than `2`.
*/
function invModPrime(uint256 a, uint256 p) internal view returns (uint256) {
unchecked {
return Math.modExp(a, p - 2, p);
}
}
/**
* @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m)
*
* Requirements:
* - modulus can't be zero
* - underlying staticcall to precompile must succeed
*
* IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make
* sure the chain you're using it on supports the precompiled contract for modular exponentiation
* at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise,
* the underlying function will succeed given the lack of a revert, but the result may be incorrectly
* interpreted as 0.
*/
function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) {
(bool success, uint256 result) = tryModExp(b, e, m);
if (!success) {
Panic.panic(Panic.DIVISION_BY_ZERO);
}
return result;
}
/**
* @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m).
* It includes a success flag indicating if the operation succeeded. Operation will be marked as failed if trying
* to operate modulo 0 or if the underlying precompile reverted.
*
* IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain
* you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in
* https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack
* of a revert, but the result may be incorrectly interpreted as 0.
*/
function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) {
if (m == 0) return (false, 0);
assembly ("memory-safe") {
let ptr := mload(0x40)
// | Offset | Content | Content (Hex) |
// |-----------|------------|--------------------------------------------------------------------|
// | 0x00:0x1f | size of b | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x20:0x3f | size of e | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x40:0x5f | size of m | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x60:0x7f | value of b | 0x<.............................................................b> |
// | 0x80:0x9f | value of e | 0x<.............................................................e> |
// | 0xa0:0xbf | value of m | 0x<.............................................................m> |
mstore(ptr, 0x20)
mstore(add(ptr, 0x20), 0x20)
mstore(add(ptr, 0x40), 0x20)
mstore(add(ptr, 0x60), b)
mstore(add(ptr, 0x80), e)
mstore(add(ptr, 0xa0), m)
// Given the result < m, it's guaranteed to fit in 32 bytes,
// so we can use the memory scratch space located at offset 0.
success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20)
result := mload(0x00)
}
}
/**
* @dev Variant of {modExp} that supports inputs of arbitrary length.
*/
function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) {
(bool success, bytes memory result) = tryModExp(b, e, m);
if (!success) {
Panic.panic(Panic.DIVISION_BY_ZERO);
}
return result;
}
/**
* @dev Variant of {tryModExp} that supports inputs of arbitrary length.
*/
function tryModExp(
bytes memory b,
bytes memory e,
bytes memory m
) internal view returns (bool success, bytes memory result) {
if (_zeroBytes(m)) return (false, new bytes(0));
uint256 mLen = m.length;
// Encode call args in result and move the free memory pointer
result = abi.encodePacked(b.length, e.length, mLen, b, e, m);
assembly ("memory-safe") {
let dataPtr := add(result, 0x20)
// Write result on top of args to avoid allocating extra memory.
success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen)
// Overwrite the length.
// result.length > returndatasize() is guaranteed because returndatasize() == m.length
mstore(result, mLen)
// Set the memory pointer after the returned data.
mstore(0x40, add(dataPtr, mLen))
}
}
/**
* @dev Returns whether the provided byte array is zero.
*/
function _zeroBytes(bytes memory byteArray) private pure returns (bool) {
for (uint256 i = 0; i < byteArray.length; ++i) {
if (byteArray[i] != 0) {
return false;
}
}
return true;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
* towards zero.
*
* This method is based on Newton's method for computing square roots; the algorithm is restricted to only
* using integer operations.
*/
function sqrt(uint256 a) internal pure returns (uint256) {
unchecked {
// Take care of easy edge cases when a == 0 or a == 1
if (a <= 1) {
return a;
}
// In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a
// sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between
// the current value as `ε_n = | x_n - sqrt(a) |`.
//
// For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root
// of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is
// bigger than any uint256.
//
// By noticing that
// `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)`
// we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar
// to the msb function.
uint256 aa = a;
uint256 xn = 1;
if (aa >= (1 << 128)) {
aa >>= 128;
xn <<= 64;
}
if (aa >= (1 << 64)) {
aa >>= 64;
xn <<= 32;
}
if (aa >= (1 << 32)) {
aa >>= 32;
xn <<= 16;
}
if (aa >= (1 << 16)) {
aa >>= 16;
xn <<= 8;
}
if (aa >= (1 << 8)) {
aa >>= 8;
xn <<= 4;
}
if (aa >= (1 << 4)) {
aa >>= 4;
xn <<= 2;
}
if (aa >= (1 << 2)) {
xn <<= 1;
}
// We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1).
//
// We can refine our estimation by noticing that the middle of that interval minimizes the error.
// If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2).
// This is going to be our x_0 (and ε_0)
xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2)
// From here, Newton's method give us:
// x_{n+1} = (x_n + a / x_n) / 2
//
// One should note that:
// x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a
// = ((x_n² + a) / (2 * x_n))² - a
// = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a
// = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²)
// = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²)
// = (x_n² - a)² / (2 * x_n)²
// = ((x_n² - a) / (2 * x_n))²
// ≥ 0
// Which proves that for all n ≥ 1, sqrt(a) ≤ x_n
//
// This gives us the proof of quadratic convergence of the sequence:
// ε_{n+1} = | x_{n+1} - sqrt(a) |
// = | (x_n + a / x_n) / 2 - sqrt(a) |
// = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) |
// = | (x_n - sqrt(a))² / (2 * x_n) |
// = | ε_n² / (2 * x_n) |
// = ε_n² / | (2 * x_n) |
//
// For the first iteration, we have a special case where x_0 is known:
// ε_1 = ε_0² / | (2 * x_0) |
// ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2)))
// ≤ 2**(2*e-4) / (3 * 2**(e-1))
// ≤ 2**(e-3) / 3
// ≤ 2**(e-3-log2(3))
// ≤ 2**(e-4.5)
//
// For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n:
// ε_{n+1} = ε_n² / | (2 * x_n) |
// ≤ (2**(e-k))² / (2 * 2**(e-1))
// ≤ 2**(2*e-2*k) / 2**e
// ≤ 2**(e-2*k)
xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5) -- special case, see above
xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9) -- general case with k = 4.5
xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18) -- general case with k = 9
xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36) -- general case with k = 18
xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72) -- general case with k = 36
xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144) -- general case with k = 72
// Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision
// ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either
// sqrt(a) or sqrt(a) + 1.
return xn - SafeCast.toUint(xn > a / xn);
}
}
/**
* @dev Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a);
}
}
/**
* @dev Return the log in base 2 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log2(uint256 x) internal pure returns (uint256 r) {
// If value has upper 128 bits set, log2 result is at least 128
r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
// If upper 64 bits of 128-bit half set, add 64 to result
r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
// If upper 32 bits of 64-bit half set, add 32 to result
r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
// If upper 16 bits of 32-bit half set, add 16 to result
r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
// If upper 8 bits of 16-bit half set, add 8 to result
r |= SafeCast.toUint((x >> r) > 0xff) << 3;
// If upper 4 bits of 8-bit half set, add 4 to result
r |= SafeCast.toUint((x >> r) > 0xf) << 2;
// Shifts value right by the current result and use it as an index into this lookup table:
//
// | x (4 bits) | index | table[index] = MSB position |
// |------------|---------|-----------------------------|
// | 0000 | 0 | table[0] = 0 |
// | 0001 | 1 | table[1] = 0 |
// | 0010 | 2 | table[2] = 1 |
// | 0011 | 3 | table[3] = 1 |
// | 0100 | 4 | table[4] = 2 |
// | 0101 | 5 | table[5] = 2 |
// | 0110 | 6 | table[6] = 2 |
// | 0111 | 7 | table[7] = 2 |
// | 1000 | 8 | table[8] = 3 |
// | 1001 | 9 | table[9] = 3 |
// | 1010 | 10 | table[10] = 3 |
// | 1011 | 11 | table[11] = 3 |
// | 1100 | 12 | table[12] = 3 |
// | 1101 | 13 | table[13] = 3 |
// | 1110 | 14 | table[14] = 3 |
// | 1111 | 15 | table[15] = 3 |
//
// The lookup table is represented as a 32-byte value with the MSB positions for 0-15 in the last 16 bytes.
assembly ("memory-safe") {
r := or(r, byte(shr(r, x), 0x0000010102020202030303030303030300000000000000000000000000000000))
}
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value);
}
}
/**
* @dev Return the log in base 10 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value);
}
}
/**
* @dev Return the log in base 256 of a positive value rounded towards zero.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 x) internal pure returns (uint256 r) {
// If value has upper 128 bits set, log2 result is at least 128
r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
// If upper 64 bits of 128-bit half set, add 64 to result
r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
// If upper 32 bits of 64-bit half set, add 32 to result
r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
// If upper 16 bits of 32-bit half set, add 16 to result
r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
// Add 1 if upper 8 bits of 16-bit half set, and divide accumulated result by 8
return (r >> 3) | SafeCast.toUint((x >> r) > 0xff);
}
/**
* @dev Return the log in base 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value);
}
}
/**
* @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
*/
function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
return uint8(rounding) % 2 == 1;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC4626.sol)
pragma solidity >=0.6.2;
import {IERC20} from "../token/ERC20/IERC20.sol";
import {IERC20Metadata} from "../token/ERC20/extensions/IERC20Metadata.sol";
/**
* @dev Interface of the ERC-4626 "Tokenized Vault Standard", as defined in
* https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
*/
interface IERC4626 is IERC20, IERC20Metadata {
event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);
event Withdraw(
address indexed sender,
address indexed receiver,
address indexed owner,
uint256 assets,
uint256 shares
);
/**
* @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
*
* - MUST be an ERC-20 token contract.
* - MUST NOT revert.
*/
function asset() external view returns (address assetTokenAddress);
/**
* @dev Returns the total amount of the underlying asset that is “managed” by Vault.
*
* - SHOULD include any compounding that occurs from yield.
* - MUST be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT revert.
*/
function totalAssets() external view returns (uint256 totalManagedAssets);
/**
* @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToShares(uint256 assets) external view returns (uint256 shares);
/**
* @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToAssets(uint256 shares) external view returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
* through a deposit call.
*
* - MUST return a limited value if receiver is subject to some deposit limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
* - MUST NOT revert.
*/
function maxDeposit(address receiver) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
* call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
* in the same transaction.
* - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
* deposit would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewDeposit(uint256 assets) external view returns (uint256 shares);
/**
* @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* deposit execution, and are accounted for during deposit.
* - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function deposit(uint256 assets, address receiver) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
* - MUST return a limited value if receiver is subject to some mint limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
* - MUST NOT revert.
*/
function maxMint(address receiver) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
* in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
* same transaction.
* - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
* would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by minting.
*/
function previewMint(uint256 shares) external view returns (uint256 assets);
/**
* @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
* execution, and are accounted for during mint.
* - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function mint(uint256 shares, address receiver) external returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
* Vault, through a withdraw call.
*
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxWithdraw(address owner) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
* call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
* called
* in the same transaction.
* - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
* the withdrawal would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewWithdraw(uint256 assets) external view returns (uint256 shares);
/**
* @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* withdraw execution, and are accounted for during withdraw.
* - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
* through a redeem call.
*
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxRedeem(address owner) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their redemption at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
* in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
* same transaction.
* - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
* redemption would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by redeeming.
*/
function previewRedeem(uint256 shares) external view returns (uint256 assets);
/**
* @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* redeem execution, and are accounted for during redeem.
* - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/draft-IERC6093.sol)
pragma solidity >=0.8.4;
/**
* @dev Standard ERC-20 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
*/
interface IERC20Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC20InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC20InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
* @param spender Address that may be allowed to operate on tokens without being their owner.
* @param allowance Amount of tokens a `spender` is allowed to operate with.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC20InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `spender` to be approved. Used in approvals.
* @param spender Address that may be allowed to operate on tokens without being their owner.
*/
error ERC20InvalidSpender(address spender);
}
/**
* @dev Standard ERC-721 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
*/
interface IERC721Errors {
/**
* @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
* Used in balance queries.
* @param owner Address of the current owner of a token.
*/
error ERC721InvalidOwner(address owner);
/**
* @dev Indicates a `tokenId` whose `owner` is the zero address.
* @param tokenId Identifier number of a token.
*/
error ERC721NonexistentToken(uint256 tokenId);
/**
* @dev Indicates an error related to the ownership over a particular token. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param tokenId Identifier number of a token.
* @param owner Address of the current owner of a token.
*/
error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC721InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC721InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param tokenId Identifier number of a token.
*/
error ERC721InsufficientApproval(address operator, uint256 tokenId);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC721InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC721InvalidOperator(address operator);
}
/**
* @dev Standard ERC-1155 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
*/
interface IERC1155Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
* @param tokenId Identifier number of a token.
*/
error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC1155InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC1155InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param owner Address of the current owner of a token.
*/
error ERC1155MissingApprovalForAll(address operator, address owner);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC1155InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC1155InvalidOperator(address operator);
/**
* @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
* Used in batch transfers.
* @param idsLength Length of the array of token identifiers
* @param valuesLength Length of the array of token amounts
*/
error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
pragma solidity ^0.8.20;
/**
* @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 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) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity >=0.6.2;
import {IERC20} from "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC-20 standard.
*/
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: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.
pragma solidity ^0.8.20;
/**
* @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such 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 SafeCast {
/**
* @dev Value doesn't fit in an uint of `bits` size.
*/
error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value);
/**
* @dev An int value doesn't fit in an uint of `bits` size.
*/
error SafeCastOverflowedIntToUint(int256 value);
/**
* @dev Value doesn't fit in an int of `bits` size.
*/
error SafeCastOverflowedIntDowncast(uint8 bits, int256 value);
/**
* @dev An uint value doesn't fit in an int of `bits` size.
*/
error SafeCastOverflowedUintToInt(uint256 value);
/**
* @dev Returns the downcasted uint248 from uint256, reverting on
* overflow (when the input is greater than largest uint248).
*
* Counterpart to Solidity's `uint248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*/
function toUint248(uint256 value) internal pure returns (uint248) {
if (value > type(uint248).max) {
revert SafeCastOverflowedUintDowncast(248, value);
}
return uint248(value);
}
/**
* @dev Returns the downcasted uint240 from uint256, reverting on
* overflow (when the input is greater than largest uint240).
*
* Counterpart to Solidity's `uint240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*/
function toUint240(uint256 value) internal pure returns (uint240) {
if (value > type(uint240).max) {
revert SafeCastOverflowedUintDowncast(240, value);
}
return uint240(value);
}
/**
* @dev Returns the downcasted uint232 from uint256, reverting on
* overflow (when the input is greater than largest uint232).
*
* Counterpart to Solidity's `uint232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*/
function toUint232(uint256 value) internal pure returns (uint232) {
if (value > type(uint232).max) {
revert SafeCastOverflowedUintDowncast(232, value);
}
return uint232(value);
}
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*/
function toUint224(uint256 value) internal pure returns (uint224) {
if (value > type(uint224).max) {
revert SafeCastOverflowedUintDowncast(224, value);
}
return uint224(value);
}
/**
* @dev Returns the downcasted uint216 from uint256, reverting on
* overflow (when the input is greater than largest uint216).
*
* Counterpart to Solidity's `uint216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*/
function toUint216(uint256 value) internal pure returns (uint216) {
if (value > type(uint216).max) {
revert SafeCastOverflowedUintDowncast(216, value);
}
return uint216(value);
}
/**
* @dev Returns the downcasted uint208 from uint256, reverting on
* overflow (when the input is greater than largest uint208).
*
* Counterpart to Solidity's `uint208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*/
function toUint208(uint256 value) internal pure returns (uint208) {
if (value > type(uint208).max) {
revert SafeCastOverflowedUintDowncast(208, value);
}
return uint208(value);
}
/**
* @dev Returns the downcasted uint200 from uint256, reverting on
* overflow (when the input is greater than largest uint200).
*
* Counterpart to Solidity's `uint200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*/
function toUint200(uint256 value) internal pure returns (uint200) {
if (value > type(uint200).max) {
revert SafeCastOverflowedUintDowncast(200, value);
}
return uint200(value);
}
/**
* @dev Returns the downcasted uint192 from uint256, reverting on
* overflow (when the input is greater than largest uint192).
*
* Counterpart to Solidity's `uint192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*/
function toUint192(uint256 value) internal pure returns (uint192) {
if (value > type(uint192).max) {
revert SafeCastOverflowedUintDowncast(192, value);
}
return uint192(value);
}
/**
* @dev Returns the downcasted uint184 from uint256, reverting on
* overflow (when the input is greater than largest uint184).
*
* Counterpart to Solidity's `uint184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*/
function toUint184(uint256 value) internal pure returns (uint184) {
if (value > type(uint184).max) {
revert SafeCastOverflowedUintDowncast(184, value);
}
return uint184(value);
}
/**
* @dev Returns the downcasted uint176 from uint256, reverting on
* overflow (when the input is greater than largest uint176).
*
* Counterpart to Solidity's `uint176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*/
function toUint176(uint256 value) internal pure returns (uint176) {
if (value > type(uint176).max) {
revert SafeCastOverflowedUintDowncast(176, value);
}
return uint176(value);
}
/**
* @dev Returns the downcasted uint168 from uint256, reverting on
* overflow (when the input is greater than largest uint168).
*
* Counterpart to Solidity's `uint168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*/
function toUint168(uint256 value) internal pure returns (uint168) {
if (value > type(uint168).max) {
revert SafeCastOverflowedUintDowncast(168, value);
}
return uint168(value);
}
/**
* @dev Returns the downcasted uint160 from uint256, reverting on
* overflow (when the input is greater than largest uint160).
*
* Counterpart to Solidity's `uint160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*/
function toUint160(uint256 value) internal pure returns (uint160) {
if (value > type(uint160).max) {
revert SafeCastOverflowedUintDowncast(160, value);
}
return uint160(value);
}
/**
* @dev Returns the downcasted uint152 from uint256, reverting on
* overflow (when the input is greater than largest uint152).
*
* Counterpart to Solidity's `uint152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*/
function toUint152(uint256 value) internal pure returns (uint152) {
if (value > type(uint152).max) {
revert SafeCastOverflowedUintDowncast(152, value);
}
return uint152(value);
}
/**
* @dev Returns the downcasted uint144 from uint256, reverting on
* overflow (when the input is greater than largest uint144).
*
* Counterpart to Solidity's `uint144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*/
function toUint144(uint256 value) internal pure returns (uint144) {
if (value > type(uint144).max) {
revert SafeCastOverflowedUintDowncast(144, value);
}
return uint144(value);
}
/**
* @dev Returns the downcasted uint136 from uint256, reverting on
* overflow (when the input is greater than largest uint136).
*
* Counterpart to Solidity's `uint136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*/
function toUint136(uint256 value) internal pure returns (uint136) {
if (value > type(uint136).max) {
revert SafeCastOverflowedUintDowncast(136, value);
}
return uint136(value);
}
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toUint128(uint256 value) internal pure returns (uint128) {
if (value > type(uint128).max) {
revert SafeCastOverflowedUintDowncast(128, value);
}
return uint128(value);
}
/**
* @dev Returns the downcasted uint120 from uint256, reverting on
* overflow (when the input is greater than largest uint120).
*
* Counterpart to Solidity's `uint120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*/
function toUint120(uint256 value) internal pure returns (uint120) {
if (value > type(uint120).max) {
revert SafeCastOverflowedUintDowncast(120, value);
}
return uint120(value);
}
/**
* @dev Returns the downcasted uint112 from uint256, reverting on
* overflow (when the input is greater than largest uint112).
*
* Counterpart to Solidity's `uint112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*/
function toUint112(uint256 value) internal pure returns (uint112) {
if (value > type(uint112).max) {
revert SafeCastOverflowedUintDowncast(112, value);
}
return uint112(value);
}
/**
* @dev Returns the downcasted uint104 from uint256, reverting on
* overflow (when the input is greater than largest uint104).
*
* Counterpart to Solidity's `uint104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*/
function toUint104(uint256 value) internal pure returns (uint104) {
if (value > type(uint104).max) {
revert SafeCastOverflowedUintDowncast(104, value);
}
return uint104(value);
}
/**
* @dev Returns the downcasted uint96 from uint256, reverting on
* overflow (when the input is greater than largest uint96).
*
* Counterpart to Solidity's `uint96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*/
function toUint96(uint256 value) internal pure returns (uint96) {
if (value > type(uint96).max) {
revert SafeCastOverflowedUintDowncast(96, value);
}
return uint96(value);
}
/**
* @dev Returns the downcasted uint88 from uint256, reverting on
* overflow (when the input is greater than largest uint88).
*
* Counterpart to Solidity's `uint88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*/
function toUint88(uint256 value) internal pure returns (uint88) {
if (value > type(uint88).max) {
revert SafeCastOverflowedUintDowncast(88, value);
}
return uint88(value);
}
/**
* @dev Returns the downcasted uint80 from uint256, reverting on
* overflow (when the input is greater than largest uint80).
*
* Counterpart to Solidity's `uint80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*/
function toUint80(uint256 value) internal pure returns (uint80) {
if (value > type(uint80).max) {
revert SafeCastOverflowedUintDowncast(80, value);
}
return uint80(value);
}
/**
* @dev Returns the downcasted uint72 from uint256, reverting on
* overflow (when the input is greater than largest uint72).
*
* Counterpart to Solidity's `uint72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*/
function toUint72(uint256 value) internal pure returns (uint72) {
if (value > type(uint72).max) {
revert SafeCastOverflowedUintDowncast(72, value);
}
return uint72(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toUint64(uint256 value) internal pure returns (uint64) {
if (value > type(uint64).max) {
revert SafeCastOverflowedUintDowncast(64, value);
}
return uint64(value);
}
/**
* @dev Returns the downcasted uint56 from uint256, reverting on
* overflow (when the input is greater than largest uint56).
*
* Counterpart to Solidity's `uint56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*/
function toUint56(uint256 value) internal pure returns (uint56) {
if (value > type(uint56).max) {
revert SafeCastOverflowedUintDowncast(56, value);
}
return uint56(value);
}
/**
* @dev Returns the downcasted uint48 from uint256, reverting on
* overflow (when the input is greater than largest uint48).
*
* Counterpart to Solidity's `uint48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*/
function toUint48(uint256 value) internal pure returns (uint48) {
if (value > type(uint48).max) {
revert SafeCastOverflowedUintDowncast(48, value);
}
return uint48(value);
}
/**
* @dev Returns the downcasted uint40 from uint256, reverting on
* overflow (when the input is greater than largest uint40).
*
* Counterpart to Solidity's `uint40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*/
function toUint40(uint256 value) internal pure returns (uint40) {
if (value > type(uint40).max) {
revert SafeCastOverflowedUintDowncast(40, value);
}
return uint40(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toUint32(uint256 value) internal pure returns (uint32) {
if (value > type(uint32).max) {
revert SafeCastOverflowedUintDowncast(32, value);
}
return uint32(value);
}
/**
* @dev Returns the downcasted uint24 from uint256, reverting on
* overflow (when the input is greater than largest uint24).
*
* Counterpart to Solidity's `uint24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*/
function toUint24(uint256 value) internal pure returns (uint24) {
if (value > type(uint24).max) {
revert SafeCastOverflowedUintDowncast(24, value);
}
return uint24(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toUint16(uint256 value) internal pure returns (uint16) {
if (value > type(uint16).max) {
revert SafeCastOverflowedUintDowncast(16, value);
}
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*/
function toUint8(uint256 value) internal pure returns (uint8) {
if (value > type(uint8).max) {
revert SafeCastOverflowedUintDowncast(8, value);
}
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*/
function toUint256(int256 value) internal pure returns (uint256) {
if (value < 0) {
revert SafeCastOverflowedIntToUint(value);
}
return uint256(value);
}
/**
* @dev Returns the downcasted int248 from int256, reverting on
* overflow (when the input is less than smallest int248 or
* greater than largest int248).
*
* Counterpart to Solidity's `int248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*/
function toInt248(int256 value) internal pure returns (int248 downcasted) {
downcasted = int248(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(248, value);
}
}
/**
* @dev Returns the downcasted int240 from int256, reverting on
* overflow (when the input is less than smallest int240 or
* greater than largest int240).
*
* Counterpart to Solidity's `int240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*/
function toInt240(int256 value) internal pure returns (int240 downcasted) {
downcasted = int240(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(240, value);
}
}
/**
* @dev Returns the downcasted int232 from int256, reverting on
* overflow (when the input is less than smallest int232 or
* greater than largest int232).
*
* Counterpart to Solidity's `int232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*/
function toInt232(int256 value) internal pure returns (int232 downcasted) {
downcasted = int232(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(232, value);
}
}
/**
* @dev Returns the downcasted int224 from int256, reverting on
* overflow (when the input is less than smallest int224 or
* greater than largest int224).
*
* Counterpart to Solidity's `int224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*/
function toInt224(int256 value) internal pure returns (int224 downcasted) {
downcasted = int224(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(224, value);
}
}
/**
* @dev Returns the downcasted int216 from int256, reverting on
* overflow (when the input is less than smallest int216 or
* greater than largest int216).
*
* Counterpart to Solidity's `int216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*/
function toInt216(int256 value) internal pure returns (int216 downcasted) {
downcasted = int216(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(216, value);
}
}
/**
* @dev Returns the downcasted int208 from int256, reverting on
* overflow (when the input is less than smallest int208 or
* greater than largest int208).
*
* Counterpart to Solidity's `int208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*/
function toInt208(int256 value) internal pure returns (int208 downcasted) {
downcasted = int208(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(208, value);
}
}
/**
* @dev Returns the downcasted int200 from int256, reverting on
* overflow (when the input is less than smallest int200 or
* greater than largest int200).
*
* Counterpart to Solidity's `int200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*/
function toInt200(int256 value) internal pure returns (int200 downcasted) {
downcasted = int200(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(200, value);
}
}
/**
* @dev Returns the downcasted int192 from int256, reverting on
* overflow (when the input is less than smallest int192 or
* greater than largest int192).
*
* Counterpart to Solidity's `int192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*/
function toInt192(int256 value) internal pure returns (int192 downcasted) {
downcasted = int192(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(192, value);
}
}
/**
* @dev Returns the downcasted int184 from int256, reverting on
* overflow (when the input is less than smallest int184 or
* greater than largest int184).
*
* Counterpart to Solidity's `int184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*/
function toInt184(int256 value) internal pure returns (int184 downcasted) {
downcasted = int184(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(184, value);
}
}
/**
* @dev Returns the downcasted int176 from int256, reverting on
* overflow (when the input is less than smallest int176 or
* greater than largest int176).
*
* Counterpart to Solidity's `int176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*/
function toInt176(int256 value) internal pure returns (int176 downcasted) {
downcasted = int176(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(176, value);
}
}
/**
* @dev Returns the downcasted int168 from int256, reverting on
* overflow (when the input is less than smallest int168 or
* greater than largest int168).
*
* Counterpart to Solidity's `int168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*/
function toInt168(int256 value) internal pure returns (int168 downcasted) {
downcasted = int168(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(168, value);
}
}
/**
* @dev Returns the downcasted int160 from int256, reverting on
* overflow (when the input is less than smallest int160 or
* greater than largest int160).
*
* Counterpart to Solidity's `int160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*/
function toInt160(int256 value) internal pure returns (int160 downcasted) {
downcasted = int160(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(160, value);
}
}
/**
* @dev Returns the downcasted int152 from int256, reverting on
* overflow (when the input is less than smallest int152 or
* greater than largest int152).
*
* Counterpart to Solidity's `int152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*/
function toInt152(int256 value) internal pure returns (int152 downcasted) {
downcasted = int152(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(152, value);
}
}
/**
* @dev Returns the downcasted int144 from int256, reverting on
* overflow (when the input is less than smallest int144 or
* greater than largest int144).
*
* Counterpart to Solidity's `int144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*/
function toInt144(int256 value) internal pure returns (int144 downcasted) {
downcasted = int144(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(144, value);
}
}
/**
* @dev Returns the downcasted int136 from int256, reverting on
* overflow (when the input is less than smallest int136 or
* greater than largest int136).
*
* Counterpart to Solidity's `int136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*/
function toInt136(int256 value) internal pure returns (int136 downcasted) {
downcasted = int136(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(136, value);
}
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toInt128(int256 value) internal pure returns (int128 downcasted) {
downcasted = int128(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(128, value);
}
}
/**
* @dev Returns the downcasted int120 from int256, reverting on
* overflow (when the input is less than smallest int120 or
* greater than largest int120).
*
* Counterpart to Solidity's `int120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*/
function toInt120(int256 value) internal pure returns (int120 downcasted) {
downcasted = int120(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(120, value);
}
}
/**
* @dev Returns the downcasted int112 from int256, reverting on
* overflow (when the input is less than smallest int112 or
* greater than largest int112).
*
* Counterpart to Solidity's `int112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*/
function toInt112(int256 value) internal pure returns (int112 downcasted) {
downcasted = int112(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(112, value);
}
}
/**
* @dev Returns the downcasted int104 from int256, reverting on
* overflow (when the input is less than smallest int104 or
* greater than largest int104).
*
* Counterpart to Solidity's `int104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*/
function toInt104(int256 value) internal pure returns (int104 downcasted) {
downcasted = int104(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(104, value);
}
}
/**
* @dev Returns the downcasted int96 from int256, reverting on
* overflow (when the input is less than smallest int96 or
* greater than largest int96).
*
* Counterpart to Solidity's `int96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*/
function toInt96(int256 value) internal pure returns (int96 downcasted) {
downcasted = int96(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(96, value);
}
}
/**
* @dev Returns the downcasted int88 from int256, reverting on
* overflow (when the input is less than smallest int88 or
* greater than largest int88).
*
* Counterpart to Solidity's `int88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*/
function toInt88(int256 value) internal pure returns (int88 downcasted) {
downcasted = int88(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(88, value);
}
}
/**
* @dev Returns the downcasted int80 from int256, reverting on
* overflow (when the input is less than smallest int80 or
* greater than largest int80).
*
* Counterpart to Solidity's `int80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*/
function toInt80(int256 value) internal pure returns (int80 downcasted) {
downcasted = int80(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(80, value);
}
}
/**
* @dev Returns the downcasted int72 from int256, reverting on
* overflow (when the input is less than smallest int72 or
* greater than largest int72).
*
* Counterpart to Solidity's `int72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*/
function toInt72(int256 value) internal pure returns (int72 downcasted) {
downcasted = int72(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(72, value);
}
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toInt64(int256 value) internal pure returns (int64 downcasted) {
downcasted = int64(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(64, value);
}
}
/**
* @dev Returns the downcasted int56 from int256, reverting on
* overflow (when the input is less than smallest int56 or
* greater than largest int56).
*
* Counterpart to Solidity's `int56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*/
function toInt56(int256 value) internal pure returns (int56 downcasted) {
downcasted = int56(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(56, value);
}
}
/**
* @dev Returns the downcasted int48 from int256, reverting on
* overflow (when the input is less than smallest int48 or
* greater than largest int48).
*
* Counterpart to Solidity's `int48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*/
function toInt48(int256 value) internal pure returns (int48 downcasted) {
downcasted = int48(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(48, value);
}
}
/**
* @dev Returns the downcasted int40 from int256, reverting on
* overflow (when the input is less than smallest int40 or
* greater than largest int40).
*
* Counterpart to Solidity's `int40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*/
function toInt40(int256 value) internal pure returns (int40 downcasted) {
downcasted = int40(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(40, value);
}
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toInt32(int256 value) internal pure returns (int32 downcasted) {
downcasted = int32(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(32, value);
}
}
/**
* @dev Returns the downcasted int24 from int256, reverting on
* overflow (when the input is less than smallest int24 or
* greater than largest int24).
*
* Counterpart to Solidity's `int24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*/
function toInt24(int256 value) internal pure returns (int24 downcasted) {
downcasted = int24(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(24, value);
}
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toInt16(int256 value) internal pure returns (int16 downcasted) {
downcasted = int16(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(16, value);
}
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*/
function toInt8(int256 value) internal pure returns (int8 downcasted) {
downcasted = int8(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(8, value);
}
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*/
function toInt256(uint256 value) internal pure returns (int256) {
// Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
if (value > uint256(type(int256).max)) {
revert SafeCastOverflowedUintToInt(value);
}
return int256(value);
}
/**
* @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump.
*/
function toUint(bool b) internal pure returns (uint256 u) {
assembly ("memory-safe") {
u := iszero(iszero(b))
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol)
pragma solidity ^0.8.20;
/**
* @dev Helper library for emitting standardized panic codes.
*
* ```solidity
* contract Example {
* using Panic for uint256;
*
* // Use any of the declared internal constants
* function foo() { Panic.GENERIC.panic(); }
*
* // Alternatively
* function foo() { Panic.panic(Panic.GENERIC); }
* }
* ```
*
* Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil].
*
* _Available since v5.1._
*/
// slither-disable-next-line unused-state
library Panic {
/// @dev generic / unspecified error
uint256 internal constant GENERIC = 0x00;
/// @dev used by the assert() builtin
uint256 internal constant ASSERT = 0x01;
/// @dev arithmetic underflow or overflow
uint256 internal constant UNDER_OVERFLOW = 0x11;
/// @dev division or modulo by zero
uint256 internal constant DIVISION_BY_ZERO = 0x12;
/// @dev enum conversion error
uint256 internal constant ENUM_CONVERSION_ERROR = 0x21;
/// @dev invalid encoding in storage
uint256 internal constant STORAGE_ENCODING_ERROR = 0x22;
/// @dev empty array pop
uint256 internal constant EMPTY_ARRAY_POP = 0x31;
/// @dev array out of bounds access
uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32;
/// @dev resource error (too large allocation or too large array)
uint256 internal constant RESOURCE_ERROR = 0x41;
/// @dev calling invalid internal function
uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51;
/// @dev Reverts with a panic code. Recommended to use with
/// the internal constants with predefined codes.
function panic(uint256 code) internal pure {
assembly ("memory-safe") {
mstore(0x00, 0x4e487b71)
mstore(0x20, code)
revert(0x1c, 0x24)
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)
pragma solidity >=0.4.16;
import {IERC165} from "../utils/introspection/IERC165.sol";// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)
pragma solidity >=0.4.16;
import {IERC20} from "../token/ERC20/IERC20.sol";// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)
pragma solidity >=0.4.16;
/**
* @dev Interface of the ERC-165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[ERC].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}{
"optimizer": {
"enabled": false,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"remappings": []
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[{"internalType":"contract IERC20","name":"_underlying","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"allowance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientAllowance","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientBalance","type":"error"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"name":"ERC20InvalidApprover","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC20InvalidReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"ERC20InvalidSender","type":"error"},{"inputs":[{"internalType":"address","name":"spender","type":"address"}],"name":"ERC20InvalidSpender","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"}],"name":"ERC4626ExceededMaxDeposit","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"}],"name":"ERC4626ExceededMaxMint","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"}],"name":"ERC4626ExceededMaxRedeem","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"}],"name":"ERC4626ExceededMaxWithdraw","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"assets","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"shares","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"shares","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"assets","type":"uint256"}],"name":"ReflectionSnapshot","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"assets","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"shares","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"MIN_DEPOSIT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"asset","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"name":"convertToAssets","outputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"name":"convertToShares","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"deposit","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"getReflectionBreakdown","outputs":[{"internalType":"uint256","name":"principal","type":"uint256"},{"internalType":"uint256","name":"reflections","type":"uint256"},{"internalType":"uint256","name":"total","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"maxDeposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"maxMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"maxRedeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"maxWithdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"mint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"name":"previewDeposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"previewMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"name":"previewRedeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"name":"previewWithdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"recoverERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner","type":"address"}],"name":"redeem","outputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sharePrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"snapshotReflections","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAssets","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner","type":"address"}],"name":"withdraw","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"stateMutability":"nonpayable","type":"function"}]Contract Creation Code
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
Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000008e677ca17065ed74675bc27bcabadb7eef10a292
-----Decoded View---------------
Arg [0] : _underlying (address): 0x8E677CA17065eD74675BC27bCaBadB7Eef10A292
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000008e677ca17065ed74675bc27bcabadb7eef10a292
Loading...
Loading
Loading...
Loading
OVERVIEW
Rain Coin is an automated meme coin where 1% of all transactions are redistributed back to holders. The daily THUNDERSTORM also gives all wallets bonus coins.Loading...
Loading
Net Worth in USD
$33,303.76
Net Worth in POL
Token Allocations
RAIN
100.00%
Multichain Portfolio | 34 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
|---|---|---|---|---|---|
| POL | 100.00% | $4.36 | 7,638.4759 | $33,303.76 |
Loading...
Loading
Loading...
Loading
Loading...
Loading
[ Download: CSV Export ]
A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.