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| Withdraw | 45405074 | 25 days ago | IN | 46.89921171 MON | 0.08755 |
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Contract Name:
SablierLockup
Compiler Version
v0.8.29+commit.ab55807c
Optimization Enabled:
Yes with 500 runs
Other Settings:
shanghai EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.22;
import { IERC4906 } from "@openzeppelin/contracts/interfaces/IERC4906.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { ERC721 } from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import { Batch } from "@sablier/evm-utils/src/Batch.sol";
import { Comptrollerable } from "@sablier/evm-utils/src/Comptrollerable.sol";
import { ISablierComptroller } from "@sablier/evm-utils/src/interfaces/ISablierComptroller.sol";
import { SablierLockupDynamic } from "./abstracts/SablierLockupDynamic.sol";
import { SablierLockupLinear } from "./abstracts/SablierLockupLinear.sol";
import { SablierLockupState } from "./abstracts/SablierLockupState.sol";
import { SablierLockupTranched } from "./abstracts/SablierLockupTranched.sol";
import { ILockupNFTDescriptor } from "./interfaces/ILockupNFTDescriptor.sol";
import { ISablierLockup } from "./interfaces/ISablierLockup.sol";
import { ISablierLockupRecipient } from "./interfaces/ISablierLockupRecipient.sol";
import { Errors } from "./libraries/Errors.sol";
import { LockupMath } from "./libraries/LockupMath.sol";
import { Lockup } from "./types/Lockup.sol";
/*
███████╗ █████╗ ██████╗ ██╗ ██╗███████╗██████╗ ██╗ ██████╗ ██████╗██╗ ██╗██╗ ██╗██████╗
██╔════╝██╔══██╗██╔══██╗██║ ██║██╔════╝██╔══██╗ ██║ ██╔═══██╗██╔════╝██║ ██╔╝██║ ██║██╔══██╗
███████╗███████║██████╔╝██║ ██║█████╗ ██████╔╝ ██║ ██║ ██║██║ █████╔╝ ██║ ██║██████╔╝
╚════██║██╔══██║██╔══██╗██║ ██║██╔══╝ ██╔══██╗ ██║ ██║ ██║██║ ██╔═██╗ ██║ ██║██╔═══╝
███████║██║ ██║██████╔╝███████╗██║███████╗██║ ██║ ███████╗╚██████╔╝╚██████╗██║ ██╗╚██████╔╝██║
╚══════╝╚═╝ ╚═╝╚═════╝ ╚══════╝╚═╝╚══════╝╚═╝ ╚═╝ ╚══════╝ ╚═════╝ ╚═════╝╚═╝ ╚═╝ ╚═════╝ ╚═╝
*/
/// @title SablierLockup
/// @notice See the documentation in {ISablierLockup}.
contract SablierLockup is
Batch, // 1 inherited component
Comptrollerable, // 1 inherited component
ERC721, // 6 inherited components
ISablierLockup, // 10 inherited components
SablierLockupDynamic, // 4 inherited components
SablierLockupLinear, // 4 inherited components
SablierLockupTranched // 4 inherited components
{
using SafeERC20 for IERC20;
/*//////////////////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////////////////*/
/// @param initialComptroller The address of the initial comptroller contract.
/// @param initialNFTDescriptor The address of the NFT descriptor contract.
constructor(
address initialComptroller,
address initialNFTDescriptor
)
Comptrollerable(initialComptroller)
ERC721("Sablier Lockup NFT", "SAB-LOCKUP")
SablierLockupState(initialNFTDescriptor)
{ }
/*//////////////////////////////////////////////////////////////////////////
USER-FACING READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc ISablierLockup
function calculateMinFeeWei(uint256 streamId)
external
view
override
notNull(streamId)
returns (uint256 minFeeWei)
{
// Calculate the minimum fee in wei for the stream sender.
minFeeWei = comptroller.calculateMinFeeWeiFor({
protocol: ISablierComptroller.Protocol.Lockup,
user: _streams[streamId].sender
});
}
/// @inheritdoc ISablierLockup
function getRecipient(uint256 streamId) external view override returns (address recipient) {
// Check the stream NFT exists and return the owner, which is the stream's recipient.
recipient = _requireOwned({ tokenId: streamId });
}
/// @inheritdoc ISablierLockup
function isCold(uint256 streamId) external view override notNull(streamId) returns (bool result) {
Lockup.Status status = _statusOf(streamId);
result = status == Lockup.Status.SETTLED || status == Lockup.Status.CANCELED || status == Lockup.Status.DEPLETED;
}
/// @inheritdoc ISablierLockup
function isWarm(uint256 streamId) external view override notNull(streamId) returns (bool result) {
Lockup.Status status = _statusOf(streamId);
result = status == Lockup.Status.PENDING || status == Lockup.Status.STREAMING;
}
/// @inheritdoc ISablierLockup
function refundableAmountOf(uint256 streamId)
external
view
override
notNull(streamId)
returns (uint128 refundableAmount)
{
// Note that checking for `isCancelable` also checks if the stream `wasCanceled` thanks to the protocol
// invariant that canceled streams are not cancelable anymore.
if (_streams[streamId].isCancelable && !_streams[streamId].isDepleted) {
refundableAmount = _streams[streamId].amounts.deposited - _streamedAmountOf(streamId);
}
// Otherwise, the result is implicitly zero.
}
/// @inheritdoc ISablierLockup
function statusOf(uint256 streamId) external view override notNull(streamId) returns (Lockup.Status status) {
status = _statusOf(streamId);
}
/// @inheritdoc ISablierLockup
function streamedAmountOf(uint256 streamId)
external
view
override
notNull(streamId)
returns (uint128 streamedAmount)
{
streamedAmount = _streamedAmountOf(streamId);
}
/// @inheritdoc ERC721
function supportsInterface(bytes4 interfaceId) public view override(IERC165, ERC721) returns (bool) {
// 0x49064906 is the ERC-165 interface ID required by ERC-4906
return interfaceId == 0x49064906 || super.supportsInterface(interfaceId);
}
/// @inheritdoc ERC721
function tokenURI(uint256 streamId) public view override(IERC721Metadata, ERC721) returns (string memory uri) {
// Check: the stream NFT exists.
_requireOwned({ tokenId: streamId });
// Generate the URI describing the stream NFT.
uri = nftDescriptor.tokenURI({ sablier: this, streamId: streamId });
}
/// @inheritdoc ISablierLockup
function withdrawableAmountOf(uint256 streamId)
external
view
override
notNull(streamId)
returns (uint128 withdrawableAmount)
{
withdrawableAmount = _withdrawableAmountOf(streamId);
}
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc ISablierLockup
function allowToHook(address recipient) external override onlyComptroller {
// Check: recipients implements the ERC-165 interface ID required by {ISablierLockupRecipient}.
bytes4 interfaceId = type(ISablierLockupRecipient).interfaceId;
if (!ISablierLockupRecipient(recipient).supportsInterface(interfaceId)) {
revert Errors.SablierLockup_AllowToHookUnsupportedInterface(recipient);
}
// Effect: put the recipient on the allowlist.
_allowedToHook[recipient] = true;
// Log the allowlist addition.
emit ISablierLockup.AllowToHook(comptroller, recipient);
}
/// @inheritdoc ISablierLockup
function burn(uint256 streamId) external payable override noDelegateCall notNull(streamId) {
// Check: only depleted streams can be burned.
if (!_streams[streamId].isDepleted) {
revert Errors.SablierLockup_StreamNotDepleted(streamId);
}
// Retrieve the current owner.
address currentRecipient = _ownerOf(streamId);
// Check: `msg.sender` is either the owner of the NFT or an approved third party.
if (!_isCallerStreamRecipientOrApproved(streamId, currentRecipient)) {
revert Errors.SablierLockup_Unauthorized(streamId, msg.sender);
}
// Effect: burn the NFT.
_burn({ tokenId: streamId });
}
/// @inheritdoc ISablierLockup
function cancel(uint256 streamId)
public
payable
override
noDelegateCall
notNull(streamId)
returns (uint128 refundedAmount)
{
// Check: the stream is neither depleted nor canceled.
if (_streams[streamId].isDepleted) {
revert Errors.SablierLockup_StreamDepleted(streamId);
} else if (_streams[streamId].wasCanceled) {
revert Errors.SablierLockup_StreamCanceled(streamId);
}
// Check: `msg.sender` is the stream's sender.
if (msg.sender != _streams[streamId].sender) {
revert Errors.SablierLockup_Unauthorized(streamId, msg.sender);
}
// Checks, Effects and Interactions: cancel the stream.
refundedAmount = _cancel(streamId);
}
/// @inheritdoc ISablierLockup
function cancelMultiple(uint256[] calldata streamIds)
external
payable
override
noDelegateCall
returns (uint128[] memory refundedAmounts)
{
uint256 count = streamIds.length;
// Initialize the refunded amounts array.
refundedAmounts = new uint128[](count);
// Iterate over the provided array of stream IDs and cancel each stream.
for (uint256 i = 0; i < count; ++i) {
// Checks, Effects and Interactions: cancel the stream using a delegate call to self.
(bool success, bytes memory result) =
address(this).delegatecall(abi.encodeCall(ISablierLockup.cancel, (streamIds[i])));
// If there is a revert, log it using an event, and continue with the next stream.
if (!success) {
emit ISablierLockup.InvalidStreamInCancelMultiple(streamIds[i], result);
}
// Otherwise, the call is successful, so insert the refunded amount into the array.
else {
// Update the amounts array.
refundedAmounts[i] = abi.decode(result, (uint128));
}
}
}
/// @inheritdoc ISablierLockup
function recover(IERC20 token, address to) external override onlyComptroller {
// If tokens are directly transferred to the contract without using the stream creation functions, the
// ERC-20 balance may be greater than the aggregate amount.
uint256 surplus = token.balanceOf(address(this)) - aggregateAmount[token];
// Interaction: transfer the surplus to the provided address.
token.safeTransfer({ to: to, value: surplus });
}
/// @inheritdoc ISablierLockup
function renounce(uint256 streamId) public payable override noDelegateCall notNull(streamId) {
// Check: the stream is not cold.
Lockup.Status status = _statusOf(streamId);
if (status == Lockup.Status.DEPLETED) {
revert Errors.SablierLockup_StreamDepleted(streamId);
} else if (status == Lockup.Status.CANCELED) {
revert Errors.SablierLockup_StreamCanceled(streamId);
} else if (status == Lockup.Status.SETTLED) {
revert Errors.SablierLockup_StreamSettled(streamId);
}
// Check: `msg.sender` is the stream's sender.
if (msg.sender != _streams[streamId].sender) {
revert Errors.SablierLockup_Unauthorized(streamId, msg.sender);
}
// Check: the stream is cancelable.
if (!_streams[streamId].isCancelable) {
revert Errors.SablierLockup_StreamNotCancelable(streamId);
}
// Effect: renounce the stream by making it not cancelable.
_streams[streamId].isCancelable = false;
// Log the renouncement.
emit ISablierLockup.RenounceLockupStream(streamId);
}
/// @inheritdoc ISablierLockup
function setNativeToken(address newNativeToken) external override onlyComptroller {
// Check: native token is not set.
if (nativeToken != address(0)) {
revert Errors.SablierLockup_NativeTokenAlreadySet(nativeToken);
}
// Effect: set the native token.
nativeToken = newNativeToken;
}
/// @inheritdoc ISablierLockup
function setNFTDescriptor(ILockupNFTDescriptor newNFTDescriptor) external override onlyComptroller {
// Effect: set the NFT descriptor.
ILockupNFTDescriptor oldNftDescriptor = nftDescriptor;
nftDescriptor = newNFTDescriptor;
// Log the change of the NFT descriptor.
emit ISablierLockup.SetNFTDescriptor(comptroller, oldNftDescriptor, newNFTDescriptor);
// Refresh the NFT metadata for all streams.
emit IERC4906.BatchMetadataUpdate({ _fromTokenId: 1, _toTokenId: nextStreamId - 1 });
}
/// @inheritdoc ISablierLockup
function withdraw(
uint256 streamId,
address to,
uint128 amount
)
public
payable
override
noDelegateCall
notNull(streamId)
{
// Check: the stream is not depleted.
if (_streams[streamId].isDepleted) {
revert Errors.SablierLockup_StreamDepleted(streamId);
}
// Check: the withdrawal address is not zero.
if (to == address(0)) {
revert Errors.SablierLockup_WithdrawToZeroAddress(streamId);
}
// Retrieve the recipient from storage.
address recipient = _ownerOf(streamId);
// Check: if `msg.sender` is neither the stream's recipient nor an approved third party, the withdrawal address
// must be the recipient.
if (to != recipient && !_isCallerStreamRecipientOrApproved(streamId, recipient)) {
revert Errors.SablierLockup_WithdrawalAddressNotRecipient(streamId, msg.sender, to);
}
// Check: the withdraw amount is not zero.
if (amount == 0) {
revert Errors.SablierLockup_WithdrawAmountZero(streamId);
}
// Check: the withdraw amount is not greater than the withdrawable amount.
uint128 withdrawableAmount = _withdrawableAmountOf(streamId);
if (amount > withdrawableAmount) {
revert Errors.SablierLockup_Overdraw(streamId, amount, withdrawableAmount);
}
// Effects and Interactions: make the withdrawal.
_withdraw(streamId, to, amount);
// Emit an ERC-4906 event to trigger an update of the NFT metadata.
emit IERC4906.MetadataUpdate({ _tokenId: streamId });
// Interaction: if `msg.sender` is not the recipient and the recipient is on the allowlist, run the hook.
if (msg.sender != recipient && _allowedToHook[recipient]) {
bytes4 selector = ISablierLockupRecipient(recipient).onSablierLockupWithdraw({
streamId: streamId,
caller: msg.sender,
to: to,
amount: amount
});
// Check: the recipient's hook returned the correct selector.
if (selector != ISablierLockupRecipient.onSablierLockupWithdraw.selector) {
revert Errors.SablierLockup_InvalidHookSelector(recipient);
}
}
}
/// @inheritdoc ISablierLockup
function withdrawMax(uint256 streamId, address to) external payable override returns (uint128 withdrawnAmount) {
withdrawnAmount = _withdrawableAmountOf(streamId);
withdraw({ streamId: streamId, to: to, amount: withdrawnAmount });
}
/// @inheritdoc ISablierLockup
function withdrawMaxAndTransfer(
uint256 streamId,
address newRecipient
)
external
payable
override
noDelegateCall
notNull(streamId)
returns (uint128 withdrawnAmount)
{
// Retrieve the current owner. This also checks that the NFT was not burned.
address currentRecipient = _ownerOf(streamId);
// Check: `msg.sender` is either the stream's recipient or an approved third party.
if (!_isCallerStreamRecipientOrApproved(streamId, currentRecipient)) {
revert Errors.SablierLockup_Unauthorized(streamId, msg.sender);
}
// Skip the withdrawal if the withdrawable amount is zero.
withdrawnAmount = _withdrawableAmountOf(streamId);
if (withdrawnAmount > 0) {
withdraw({ streamId: streamId, to: currentRecipient, amount: withdrawnAmount });
}
// Checks and Effects: transfer the NFT.
_transfer({ from: currentRecipient, to: newRecipient, tokenId: streamId });
}
/// @inheritdoc ISablierLockup
function withdrawMultiple(
uint256[] calldata streamIds,
uint128[] calldata amounts
)
external
payable
override
noDelegateCall
{
// Check: there is an equal number of `streamIds` and `amounts`.
uint256 streamIdsCount = streamIds.length;
uint256 amountsCount = amounts.length;
if (streamIdsCount != amountsCount) {
revert Errors.SablierLockup_WithdrawArrayCountsNotEqual(streamIdsCount, amountsCount);
}
// Iterate over the provided array of stream IDs and withdraw from each stream to the recipient.
for (uint256 i = 0; i < streamIdsCount; ++i) {
// Checks, Effects and Interactions: withdraw using a delegate call to self.
(bool success, bytes memory result) = address(this).delegatecall(
abi.encodeCall(ISablierLockup.withdraw, (streamIds[i], _ownerOf(streamIds[i]), amounts[i]))
);
// If there is a revert, log it using an event, and continue with the next stream.
if (!success) {
emit ISablierLockup.InvalidWithdrawalInWithdrawMultiple(streamIds[i], result);
}
}
}
/*//////////////////////////////////////////////////////////////////////////
INTERNAL READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc SablierLockupState
function _streamedAmountOf(uint256 streamId) internal view override returns (uint128 streamedAmount) {
// Load the stream from storage.
Lockup.Stream memory stream = _streams[streamId];
if (stream.isDepleted) {
return stream.amounts.withdrawn;
} else if (stream.wasCanceled) {
return stream.amounts.deposited - stream.amounts.refunded;
}
// Calculate the streamed amount for the LD model.
if (stream.lockupModel == Lockup.Model.LOCKUP_DYNAMIC) {
streamedAmount = LockupMath.calculateStreamedAmountLD({
depositedAmount: stream.amounts.deposited,
endTime: stream.endTime,
segments: _segments[streamId],
startTime: stream.startTime,
withdrawnAmount: stream.amounts.withdrawn
});
}
// Calculate the streamed amount for the LL model.
else if (stream.lockupModel == Lockup.Model.LOCKUP_LINEAR) {
streamedAmount = LockupMath.calculateStreamedAmountLL({
cliffTime: _cliffs[streamId],
depositedAmount: stream.amounts.deposited,
endTime: stream.endTime,
startTime: stream.startTime,
unlockAmounts: _unlockAmounts[streamId],
withdrawnAmount: stream.amounts.withdrawn
});
}
// Calculate the streamed amount for the LT model.
else if (stream.lockupModel == Lockup.Model.LOCKUP_TRANCHED) {
streamedAmount = LockupMath.calculateStreamedAmountLT({
depositedAmount: stream.amounts.deposited,
endTime: stream.endTime,
startTime: stream.startTime,
tranches: _tranches[streamId]
});
}
}
/*//////////////////////////////////////////////////////////////////////////
INTERNAL STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc SablierLockupState
function _create(
bool cancelable,
uint128 depositAmount,
Lockup.Model lockupModel,
address recipient,
address sender,
uint256 streamId,
Lockup.Timestamps memory timestamps,
IERC20 token,
bool transferable
)
internal
override
{
// Effect: create the stream.
_streams[streamId] = Lockup.Stream({
sender: sender,
startTime: timestamps.start,
endTime: timestamps.end,
isCancelable: cancelable,
wasCanceled: false,
token: token,
isDepleted: false,
isTransferable: transferable,
lockupModel: lockupModel,
amounts: Lockup.Amounts({ deposited: depositAmount, withdrawn: 0, refunded: 0 })
});
// Effect: mint the NFT to the recipient.
_mint({ to: recipient, tokenId: streamId });
unchecked {
// Effect: bump the next stream ID.
nextStreamId = streamId + 1;
// Effect: increase the aggregate amount.
aggregateAmount[token] += depositAmount;
}
// Interaction: transfer the deposit amount.
token.safeTransferFrom({ from: msg.sender, to: address(this), value: depositAmount });
}
/// @notice Overrides the {ERC-721._update} function to check that the stream is transferable, and emits an
/// ERC-4906 event.
/// @dev There are two cases when the transferable flag is ignored:
/// - If the current owner is 0, then the update is a mint and is allowed.
/// - If `to` is 0, then the update is a burn and is also allowed.
/// @param to The address of the new recipient of the stream.
/// @param streamId ID of the stream to update.
/// @param auth Optional parameter. If the value is not zero, the overridden implementation will check that
/// `auth` is either the recipient of the stream, or an approved third party.
/// @return The original recipient of the `streamId` before the update.
function _update(address to, uint256 streamId, address auth) internal override returns (address) {
address from = _ownerOf(streamId);
if (from != address(0) && to != address(0) && !_streams[streamId].isTransferable) {
revert Errors.SablierLockup_NotTransferable(streamId);
}
// Emit an ERC-4906 event to trigger an update of the NFT metadata.
emit IERC4906.MetadataUpdate({ _tokenId: streamId });
return super._update(to, streamId, auth);
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Checks whether `msg.sender` is the stream's recipient or an approved third party, when the `recipient`
/// is known in advance.
/// @param streamId The stream ID for the query.
/// @param recipient The address of the stream's recipient.
function _isCallerStreamRecipientOrApproved(uint256 streamId, address recipient) private view returns (bool) {
return _isAuthorized({ owner: recipient, spender: msg.sender, tokenId: streamId });
}
/// @dev See the documentation for the user-facing functions that call this private function.
function _withdrawableAmountOf(uint256 streamId) private view returns (uint128) {
return _streamedAmountOf(streamId) - _streams[streamId].amounts.withdrawn;
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev See the documentation for the user-facing functions that call this private function.
function _cancel(uint256 streamId) private returns (uint128 senderAmount) {
// Calculate the streamed amount.
uint128 streamedAmount = _streamedAmountOf(streamId);
// Retrieve the amounts from storage.
Lockup.Amounts memory amounts = _streams[streamId].amounts;
// Check: the stream is not settled.
if (streamedAmount >= amounts.deposited) {
revert Errors.SablierLockup_StreamSettled(streamId);
}
// Check: the stream is cancelable.
if (!_streams[streamId].isCancelable) {
revert Errors.SablierLockup_StreamNotCancelable(streamId);
}
// Calculate the sender's amount.
unchecked {
senderAmount = amounts.deposited - streamedAmount;
}
// Calculate the recipient's amount.
uint128 recipientAmount = streamedAmount - amounts.withdrawn;
// Effect: mark the stream as canceled.
_streams[streamId].wasCanceled = true;
// Effect: make the stream not cancelable anymore, because a stream can only be canceled once.
_streams[streamId].isCancelable = false;
// Effect: if there are no tokens left for the recipient to withdraw, mark the stream as depleted.
if (recipientAmount == 0) {
_streams[streamId].isDepleted = true;
}
// Effect: set the refunded amount.
_streams[streamId].amounts.refunded = senderAmount;
// Retrieve the sender and the recipient from storage.
address sender = _streams[streamId].sender;
address recipient = _ownerOf(streamId);
// Retrieve the ERC-20 token from storage.
IERC20 token = _streams[streamId].token;
unchecked {
// Effect: decrease the aggregate amount.
aggregateAmount[token] -= senderAmount;
}
// Interaction: refund the sender.
token.safeTransfer({ to: sender, value: senderAmount });
// Log the cancellation.
emit ISablierLockup.CancelLockupStream(streamId, sender, recipient, token, senderAmount, recipientAmount);
// Emit an ERC-4906 event to trigger an update of the NFT metadata.
emit IERC4906.MetadataUpdate({ _tokenId: streamId });
// Interaction: if the recipient is on the allowlist, run the hook.
if (_allowedToHook[recipient]) {
bytes4 selector = ISablierLockupRecipient(recipient).onSablierLockupCancel({
streamId: streamId,
sender: sender,
senderAmount: senderAmount,
recipientAmount: recipientAmount
});
// Check: the recipient's hook returned the correct selector.
if (selector != ISablierLockupRecipient.onSablierLockupCancel.selector) {
revert Errors.SablierLockup_InvalidHookSelector(recipient);
}
}
}
/// @dev See the documentation for the user-facing functions that call this private function.
function _withdraw(uint256 streamId, address to, uint128 amount) private {
// Calculate the minimum fee in wei for the stream sender.
uint256 minFeeWei = comptroller.calculateMinFeeWeiFor({
protocol: ISablierComptroller.Protocol.Lockup,
user: _streams[streamId].sender
});
uint256 feePaid = msg.value;
// Check: fee paid is at least the minimum fee.
if (feePaid < minFeeWei) {
revert Errors.SablierLockup_InsufficientFeePayment(feePaid, minFeeWei);
}
// Effect: update the withdrawn amount.
_streams[streamId].amounts.withdrawn = _streams[streamId].amounts.withdrawn + amount;
// Retrieve the amounts from storage.
Lockup.Amounts memory amounts = _streams[streamId].amounts;
// Using ">=" instead of "==" for additional safety reasons. In the event of an unforeseen increase in the
// withdrawn amount, the stream will still be marked as depleted.
if (amounts.withdrawn >= amounts.deposited - amounts.refunded) {
// Effect: mark the stream as depleted.
_streams[streamId].isDepleted = true;
// Effect: make the stream not cancelable anymore, because a depleted stream cannot be canceled.
_streams[streamId].isCancelable = false;
}
// Retrieve the ERC-20 token from storage.
IERC20 token = _streams[streamId].token;
unchecked {
// Effect: decrease the aggregate amount.
aggregateAmount[token] -= amount;
}
// Interaction: perform the ERC-20 transfer.
token.safeTransfer({ to: to, value: amount });
// Log the withdrawal.
emit ISablierLockup.WithdrawFromLockupStream(streamId, to, token, amount);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC4906.sol)
pragma solidity ^0.8.20;
import {IERC165} from "./IERC165.sol";
import {IERC721} from "./IERC721.sol";
/// @title ERC-721 Metadata Update Extension
interface IERC4906 is IERC165, IERC721 {
/// @dev This event emits when the metadata of a token is changed.
/// So that the third-party platforms such as NFT market could
/// timely update the images and related attributes of the NFT.
event MetadataUpdate(uint256 _tokenId);
/// @dev This event emits when the metadata of a range of tokens is changed.
/// So that the third-party platforms such as NFT market could
/// timely update the images and related attributes of the NFTs.
event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.20;
/**
* @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 v5.3.0) (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 v5.1.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.20;
import {IERC721} from "./IERC721.sol";
import {IERC721Metadata} from "./extensions/IERC721Metadata.sol";
import {ERC721Utils} from "./utils/ERC721Utils.sol";
import {Context} from "../../utils/Context.sol";
import {Strings} from "../../utils/Strings.sol";
import {IERC165, ERC165} from "../../utils/introspection/ERC165.sol";
import {IERC721Errors} from "../../interfaces/draft-IERC6093.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC-721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Errors {
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
mapping(uint256 tokenId => address) private _owners;
mapping(address owner => uint256) private _balances;
mapping(uint256 tokenId => address) private _tokenApprovals;
mapping(address owner => mapping(address operator => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual returns (uint256) {
if (owner == address(0)) {
revert ERC721InvalidOwner(address(0));
}
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual returns (address) {
return _requireOwned(tokenId);
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual returns (string memory) {
_requireOwned(tokenId);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string.concat(baseURI, tokenId.toString()) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual {
_approve(to, tokenId, _msgSender());
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual returns (address) {
_requireOwned(tokenId);
return _getApproved(tokenId);
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
// Setting an "auth" arguments enables the `_isAuthorized` check which verifies that the token exists
// (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.
address previousOwner = _update(to, tokenId, _msgSender());
if (previousOwner != from) {
revert ERC721IncorrectOwner(from, tokenId, previousOwner);
}
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual {
transferFrom(from, to, tokenId);
ERC721Utils.checkOnERC721Received(_msgSender(), from, to, tokenId, data);
}
/**
* @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
*
* IMPORTANT: Any overrides to this function that add ownership of tokens not tracked by the
* core ERC-721 logic MUST be matched with the use of {_increaseBalance} to keep balances
* consistent with ownership. The invariant to preserve is that for any address `a` the value returned by
* `balanceOf(a)` must be equal to the number of tokens such that `_ownerOf(tokenId)` is `a`.
*/
function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
return _owners[tokenId];
}
/**
* @dev Returns the approved address for `tokenId`. Returns 0 if `tokenId` is not minted.
*/
function _getApproved(uint256 tokenId) internal view virtual returns (address) {
return _tokenApprovals[tokenId];
}
/**
* @dev Returns whether `spender` is allowed to manage `owner`'s tokens, or `tokenId` in
* particular (ignoring whether it is owned by `owner`).
*
* WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
* assumption.
*/
function _isAuthorized(address owner, address spender, uint256 tokenId) internal view virtual returns (bool) {
return
spender != address(0) &&
(owner == spender || isApprovedForAll(owner, spender) || _getApproved(tokenId) == spender);
}
/**
* @dev Checks if `spender` can operate on `tokenId`, assuming the provided `owner` is the actual owner.
* Reverts if:
* - `spender` does not have approval from `owner` for `tokenId`.
* - `spender` does not have approval to manage all of `owner`'s assets.
*
* WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
* assumption.
*/
function _checkAuthorized(address owner, address spender, uint256 tokenId) internal view virtual {
if (!_isAuthorized(owner, spender, tokenId)) {
if (owner == address(0)) {
revert ERC721NonexistentToken(tokenId);
} else {
revert ERC721InsufficientApproval(spender, tokenId);
}
}
}
/**
* @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
*
* NOTE: the value is limited to type(uint128).max. This protect against _balance overflow. It is unrealistic that
* a uint256 would ever overflow from increments when these increments are bounded to uint128 values.
*
* WARNING: Increasing an account's balance using this function tends to be paired with an override of the
* {_ownerOf} function to resolve the ownership of the corresponding tokens so that balances and ownership
* remain consistent with one another.
*/
function _increaseBalance(address account, uint128 value) internal virtual {
unchecked {
_balances[account] += value;
}
}
/**
* @dev Transfers `tokenId` from its current owner to `to`, or alternatively mints (or burns) if the current owner
* (or `to`) is the zero address. Returns the owner of the `tokenId` before the update.
*
* The `auth` argument is optional. If the value passed is non 0, then this function will check that
* `auth` is either the owner of the token, or approved to operate on the token (by the owner).
*
* Emits a {Transfer} event.
*
* NOTE: If overriding this function in a way that tracks balances, see also {_increaseBalance}.
*/
function _update(address to, uint256 tokenId, address auth) internal virtual returns (address) {
address from = _ownerOf(tokenId);
// Perform (optional) operator check
if (auth != address(0)) {
_checkAuthorized(from, auth, tokenId);
}
// Execute the update
if (from != address(0)) {
// Clear approval. No need to re-authorize or emit the Approval event
_approve(address(0), tokenId, address(0), false);
unchecked {
_balances[from] -= 1;
}
}
if (to != address(0)) {
unchecked {
_balances[to] += 1;
}
}
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
return from;
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
address previousOwner = _update(to, tokenId, address(0));
if (previousOwner != address(0)) {
revert ERC721InvalidSender(address(0));
}
}
/**
* @dev Mints `tokenId`, transfers it to `to` and checks for `to` acceptance.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
_mint(to, tokenId);
ERC721Utils.checkOnERC721Received(_msgSender(), address(0), to, tokenId, data);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
* This is an internal function that does not check if the sender is authorized to operate on the token.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal {
address previousOwner = _update(address(0), tokenId, address(0));
if (previousOwner == address(0)) {
revert ERC721NonexistentToken(tokenId);
}
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
address previousOwner = _update(to, tokenId, address(0));
if (previousOwner == address(0)) {
revert ERC721NonexistentToken(tokenId);
} else if (previousOwner != from) {
revert ERC721IncorrectOwner(from, tokenId, previousOwner);
}
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking that contract recipients
* are aware of the ERC-721 standard to prevent tokens from being forever locked.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is like {safeTransferFrom} in the sense that it invokes
* {IERC721Receiver-onERC721Received} on the receiver, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `tokenId` token must exist and be owned by `from`.
* - `to` cannot be the zero address.
* - `from` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId) internal {
_safeTransfer(from, to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeTransfer-address-address-uint256-}[`_safeTransfer`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
_transfer(from, to, tokenId);
ERC721Utils.checkOnERC721Received(_msgSender(), from, to, tokenId, data);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* The `auth` argument is optional. If the value passed is non 0, then this function will check that `auth` is
* either the owner of the token, or approved to operate on all tokens held by this owner.
*
* Emits an {Approval} event.
*
* Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
*/
function _approve(address to, uint256 tokenId, address auth) internal {
_approve(to, tokenId, auth, true);
}
/**
* @dev Variant of `_approve` with an optional flag to enable or disable the {Approval} event. The event is not
* emitted in the context of transfers.
*/
function _approve(address to, uint256 tokenId, address auth, bool emitEvent) internal virtual {
// Avoid reading the owner unless necessary
if (emitEvent || auth != address(0)) {
address owner = _requireOwned(tokenId);
// We do not use _isAuthorized because single-token approvals should not be able to call approve
if (auth != address(0) && owner != auth && !isApprovedForAll(owner, auth)) {
revert ERC721InvalidApprover(auth);
}
if (emitEvent) {
emit Approval(owner, to, tokenId);
}
}
_tokenApprovals[tokenId] = to;
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Requirements:
* - operator can't be the address zero.
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
if (operator == address(0)) {
revert ERC721InvalidOperator(operator);
}
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` doesn't have a current owner (it hasn't been minted, or it has been burned).
* Returns the owner.
*
* Overrides to ownership logic should be done to {_ownerOf}.
*/
function _requireOwned(uint256 tokenId) internal view returns (address) {
address owner = _ownerOf(tokenId);
if (owner == address(0)) {
revert ERC721NonexistentToken(tokenId);
}
return owner;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.20;
import {IERC721} from "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)
pragma solidity ^0.8.20;
/**
* @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);
}// SPDX-License-Identifier: GPL-3.0-or-later
// solhint-disable no-inline-assembly
pragma solidity >=0.8.22;
import { IBatch } from "./interfaces/IBatch.sol";
/// @title Batch
/// @notice See the documentation in {IBatch}.
abstract contract Batch is IBatch {
/// @inheritdoc IBatch
/// @dev Since `msg.value` can be reused across calls, be VERY CAREFUL when using it. Refer to
/// https://paradigm.xyz/2021/08/two-rights-might-make-a-wrong for more information.
function batch(bytes[] calldata calls) external payable virtual override returns (bytes[] memory results) {
uint256 count = calls.length;
results = new bytes[](count);
for (uint256 i = 0; i < count; ++i) {
(bool success, bytes memory result) = address(this).delegatecall(calls[i]);
// Check: If the delegatecall failed, load and bubble up the revert data.
if (!success) {
assembly {
// Get the length of the result stored in the first 32 bytes.
let resultSize := mload(result)
// Forward the pointer by 32 bytes to skip the length argument, and revert with the result.
revert(add(32, result), resultSize)
}
}
// Push the result into the results array.
results[i] = result;
}
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IComptrollerable } from "./interfaces/IComptrollerable.sol";
import { ISablierComptroller } from "./interfaces/ISablierComptroller.sol";
import { Errors } from "./libraries/Errors.sol";
/// @title Comptrollerable
/// @notice See the documentation in {IComptrollerable}.
abstract contract Comptrollerable is IComptrollerable {
/*//////////////////////////////////////////////////////////////////////////
STATE VARIABLES
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc IComptrollerable
ISablierComptroller public override comptroller;
/*//////////////////////////////////////////////////////////////////////////
MODIFIERS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Reverts if called by any account other than the comptroller.
modifier onlyComptroller() {
_checkComptroller();
_;
}
/*//////////////////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////////////////*/
/// @param initialComptroller The address of the initial comptroller contract.
constructor(address initialComptroller) {
// Define the minimal interface ID required by the contracts inherited from {Comptrollerable}.
bytes4 initialMInimalInterfaceId = ISablierComptroller.calculateMinFeeWeiFor.selector
^ ISablierComptroller.convertUSDFeeToWei.selector ^ ISablierComptroller.execute.selector
^ ISablierComptroller.getMinFeeUSDFor.selector;
// Set the initial comptroller.
_setComptroller({
previousComptroller: ISablierComptroller(address(0)),
newComptroller: ISablierComptroller(initialComptroller),
minimalInterfaceId: initialMInimalInterfaceId
});
}
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc IComptrollerable
function setComptroller(ISablierComptroller newComptroller) external override onlyComptroller {
// Checks and Effects: set the new comptroller.
_setComptroller({
previousComptroller: comptroller,
newComptroller: newComptroller,
minimalInterfaceId: comptroller.MINIMAL_INTERFACE_ID()
});
}
/// @inheritdoc IComptrollerable
function transferFeesToComptroller() external override {
uint256 feeAmount = address(this).balance;
// Interaction: transfer the fees to the comptroller.
(bool success,) = address(comptroller).call{ value: feeAmount }("");
// Dummy assignment to silence the compiler warning, because comptroller is expected to implement `receive()`
// function.
success;
// Log the fee transfer.
emit IComptrollerable.TransferFeesToComptroller(comptroller, feeAmount);
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev See the documentation for the user-facing functions that call this private function.
function _checkComptroller() private view {
if (msg.sender != address(comptroller)) {
revert Errors.Comptrollerable_CallerNotComptroller(address(comptroller), msg.sender);
}
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev See the documentation for the user-facing functions that call this private function.
function _setComptroller(
ISablierComptroller previousComptroller,
ISablierComptroller newComptroller,
bytes4 minimalInterfaceId
)
private
{
// Check: the new comptroller supports the minimal interface ID.
if (!newComptroller.supportsInterface(minimalInterfaceId)) {
revert Errors.Comptrollerable_UnsupportedInterfaceId({
previousComptroller: address(previousComptroller),
newComptroller: address(newComptroller),
minimalInterfaceId: minimalInterfaceId
});
}
// Effect: set the new comptroller.
comptroller = newComptroller;
// Log the change.
emit SetComptroller(previousComptroller, newComptroller);
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import { IERC1822Proxiable } from "@openzeppelin/contracts/interfaces/draft-IERC1822.sol";
import { IRoleAdminable } from "./IRoleAdminable.sol";
/// @title ISablierComptroller
/// @notice Manage fees across all Sablier protocols. State-changing functions are only accessible to the admin and the
/// fee manager.
interface ISablierComptroller is IERC165, IERC1822Proxiable, IRoleAdminable {
/*//////////////////////////////////////////////////////////////////////////
TYPES
//////////////////////////////////////////////////////////////////////////*/
/// @notice Struct encapsulating the parameters of a custom USD fee.
/// @param enabled Whether the fee is enabled. If false, the min USD fee will apply instead.
/// @param fee The fee amount in USD, denominated in Chainlink's 8-decimal format for USD prices, where 1e8 is $1.
struct CustomFeeUSD {
bool enabled;
uint256 fee;
}
/// @notice Enum representing the different protocols supported by the comptroller.
enum Protocol {
Airdrops,
Flow,
Lockup,
Staking
}
/// @notice Struct encapsulating the fees for a protocol.
/// @param minFeeUSD The minimum fee in USD, denominated in Chainlink's 8-decimal format for USD prices, where 1e8
/// is $1.
/// @param customFees Custom fees struct mapped by user address.
struct ProtocolFees {
uint256 minFeeUSD;
mapping(address user => CustomFeeUSD) customFeesUSD;
}
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when the admin or the fee manager disables the custom USD fee for the provided user.
event DisableCustomFeeUSD(
Protocol indexed protocol, address caller, address indexed user, uint256 previousMinFeeUSD, uint256 newMinFeeUSD
);
/// @notice Emitted when a target contract is called.
event Execute(address indexed target, bytes data, bytes result);
/// @notice Emitted when the admin or the fee manager sets the custom USD fee for the provided user.
event SetCustomFeeUSD(
Protocol indexed protocol, address caller, address indexed user, uint256 previousMinFeeUSD, uint256 newMinFeeUSD
);
/// @notice Emitted when the admin or the fee manager sets a new minimum USD fee.
event SetMinFeeUSD(Protocol indexed protocol, address caller, uint256 previousMinFeeUSD, uint256 newMinFeeUSD);
/// @notice Emitted when the oracle contract address is set by the admin.
event SetOracle(address indexed admin, address previousOracle, address newOracle);
/// @notice Emitted when the admin or the fee collector transfers the accrued fees to the fee recipient.
event TransferFees(address indexed feeRecipient, uint256 feeAmount);
/*//////////////////////////////////////////////////////////////////////////
READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Retrieves the maximum USD fee that can be set for claiming an airdrop or withdrawing from a stream.
/// @dev This is a constant state variable and is 100e8, which is equivalent to $100.
function MAX_FEE_USD() external view returns (uint256);
/// @notice The minimal interface ID of the comptroller.
/// @dev Any new comptroller must support the minimal interface ID made up of the following functions:
/// 1. {calculateMinFeeWeiFor} - used by protocols inherited from {IComptrollerable}.
/// 2. {convertUSDFeeToWei} - used by protocols inherited from {IComptrollerable}.
/// 3. {execute} - used by comptroller admin to perform necessary operations.
/// 4. {getMinFeeUSDFor} - used by protocols inherited from {IComptrollerable}.
function MINIMAL_INTERFACE_ID() external view returns (bytes4);
/// @notice Calculates the minimum fee in wei for the given protocol.
/// @dev See the documentation for {convertUSDFeeToWei} for more details.
/// @param protocol The protocol as defined in {Protocol} enum.
function calculateMinFeeWei(Protocol protocol) external view returns (uint256);
/// @notice Calculates the minimum fee in wei for the provided user for the given protocol.
/// @dev If the custom fee is enabled, it returns the custom fee, otherwise it returns the default minimum fee. See
/// the documentation for {convertUSDFeeToWei} for more details.
/// @param protocol The protocol as defined in {Protocol} enum.
/// @param user The user address.
function calculateMinFeeWeiFor(Protocol protocol, address user) external view returns (uint256);
/// @notice Converts the fee amount from USD to Wei.
/// @dev The price is considered to be 0 if:
/// 1. The oracle is not set.
/// 2. The min USD fee is 0.
/// 3. The oracle price is ≤ 0.
/// 4. The oracle's update timestamp is in the future.
/// 5. The oracle price hasn't been updated in the last 24 hours.
///
/// @param feeUSD The fee in USD, denominated in Chainlink's 8-decimal format for USD prices, where 1e8 is $1.
/// @return The fee in wei, denominated in 18 decimals (1e18 = 1 native token).
function convertUSDFeeToWei(uint256 feeUSD) external view returns (uint256);
/// @notice Get the minimum fee in USD for the given protocol, paid in the native token of the chain, e.g.,
/// ETH for Ethereum Mainnet. Use {calculateMinFeeWei} to retrieve the fee in wei.
/// @dev The fee is denominated in Chainlink's 8-decimal format for USD prices, where 1e8 is $1.
function getMinFeeUSD(Protocol protocol) external view returns (uint256);
/// @notice Get the minimum fee in USD for the provided user for the given protocol, paid in the native token of the
/// chain, e.g., ETH for Ethereum Mainnet. Use {calculateMinFeeWeiFor} to retrieve the fee in wei.
/// @dev The fee is denominated in Chainlink's 8-decimal format for USD prices, where 1e8 is $1.
function getMinFeeUSDFor(Protocol protocol, address user) external view returns (uint256);
/// @notice Retrieves the oracle contract address, which provides price data for the native token.
/// @dev A zero address indicates that the oracle is not set.
function oracle() external view returns (address);
/*//////////////////////////////////////////////////////////////////////////
STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Disables the custom USD fee for the provided user for the given protocol, defaulting to the minimum fee.
/// @dev Emits a {DisableCustomFeeUSD} event.
///
/// Notes:
/// - In case of airdrops, the new fee applies only to the future campaigns created by the user. Past campaigns are
/// not affected.
/// - In case of streams, the new fee applies immediately to all the streams created by user.
///
/// Requirements:
/// - `msg.sender` must be either the admin or have the {IRoleAdminable.FEE_MANAGEMENT_ROLE} role.
///
/// @param protocol The protocol as defined in {Protocol} enum.
/// @param user The user address.
function disableCustomFeeUSDFor(Protocol protocol, address user) external;
/// @notice Executes an external call to any contract and function.
///
/// @dev Emits an {Execute} event.
///
/// Requirements:
/// - `msg.sender` must be the admin.
/// - `target` must be a contract.
///
/// @param target The address of the target contract on which the data is executed.
/// @param data Function selector plus ABI encoded data.
/// @return result The result from the call.
function execute(address target, bytes calldata data) external returns (bytes memory result);
/// @notice Sets the custom USD fee for the provided user for the given protocol.
/// @dev Emits a {SetCustomFeeUSD} event.
///
/// Notes:
/// - In case of airdrops, the new fee applies only to the future campaigns created by the user. Past campaigns are
/// not affected.
/// - In case of streams, the new fee applies immediately to all the streams created by user.
///
/// Requirements:
/// - `msg.sender` must be either the admin or have the {IRoleAdminable.FEE_MANAGEMENT_ROLE} role.
/// - `customFeeUSD` must be less than or equal to {MAX_FEE_USD}.
///
/// @param protocol The protocol as defined in {Protocol} enum.
/// @param user The user address.
/// @param customFeeUSD The custom USD fee to set, denominated in 8 decimals.
function setCustomFeeUSDFor(Protocol protocol, address user, uint256 customFeeUSD) external;
/// @notice Sets a new min USD fee for the given protocol.
/// @dev Emits a {SetMinFeeUSD} event.
///
/// Notes:
/// - In case of airdrops, the new fee applies only to the future campaigns created by the user. Past campaigns are
/// not affected.
/// - In case of streams, the new fee applies immediately to all the streams created by user.
///
/// Requirements:
/// - `msg.sender` must be either the admin or have the {IRoleAdminable.FEE_MANAGEMENT_ROLE} role.
/// - `newMinFeeUSD` must be less than or equal to {MAX_FEE_USD}.
///
/// @param protocol The protocol as defined in {Protocol} enum.
/// @param newMinFeeUSD The custom USD fee to set, denominated in 8 decimals.
function setMinFeeUSD(Protocol protocol, uint256 newMinFeeUSD) external;
/// @notice Sets the oracle contract address. The zero address can be used to disable the oracle.
/// @dev Emits a {SetOracle} event.
///
/// Requirements:
/// - `msg.sender` must be the admin.
/// - If `newOracle` is not the zero address, the call to it must not fail.
///
/// @param newOracle The new oracle contract address. It can be the zero address.
function setOracle(address newOracle) external;
/// @notice Transfers fees from the given protocol addresses to this contract, and then transfer the entire balance
/// of this contract to the fee recipient.
/// @dev Emits a {TransferFees} event.
///
/// Notes:
/// - If `feeRecipient` is a contract, it must be able to receive native tokens, e.g., ETH for Ethereum Mainnet.
/// - `protocolAddresses` can be empty.
///
/// Requirements:
/// `feeRecipient` must not be the zero address.
/// - If `msg.sender` has neither the {IRoleAdminable.FEE_COLLECTOR_ROLE} role nor is the contract admin, then
/// `feeRecipient` must be the admin address.
/// - `protocolAddresses` must implement the {IComptrollerable} interface.
///
/// @param protocolAddresses An array of addresses of the Sablier protocols from which fees is transferred from.
/// @param feeRecipient The address to which the entire fee from this contract is transferred.
function transferFees(address[] calldata protocolAddresses, address feeRecipient) external;
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.22;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { NoDelegateCall } from "@sablier/evm-utils/src/NoDelegateCall.sol";
import { ISablierLockupDynamic } from "../interfaces/ISablierLockupDynamic.sol";
import { Helpers } from "../libraries/Helpers.sol";
import { Lockup } from "../types/Lockup.sol";
import { LockupDynamic } from "../types/LockupDynamic.sol";
import { SablierLockupState } from "./SablierLockupState.sol";
/// @title SablierLockupDynamic
/// @notice See the documentation in {ISablierLockupDynamic}.
abstract contract SablierLockupDynamic is
ISablierLockupDynamic, // 1 inherited component
NoDelegateCall, // 0 inherited components
SablierLockupState // 1 inherited component
{
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc ISablierLockupDynamic
function createWithDurationsLD(
Lockup.CreateWithDurations calldata params,
LockupDynamic.SegmentWithDuration[] calldata segmentsWithDuration
)
external
payable
override
noDelegateCall
returns (uint256 streamId)
{
// Use the block timestamp as the start time.
uint40 startTime = uint40(block.timestamp);
// Generate the canonical segments.
LockupDynamic.Segment[] memory segments = Helpers.calculateSegmentTimestamps(segmentsWithDuration, startTime);
// Declare the timestamps for the stream.
Lockup.Timestamps memory timestamps =
Lockup.Timestamps({ start: startTime, end: segments[segments.length - 1].timestamp });
// Checks, Effects and Interactions: create the stream.
streamId = _createLD({
cancelable: params.cancelable,
depositAmount: params.depositAmount,
recipient: params.recipient,
segments: segments,
sender: params.sender,
shape: params.shape,
timestamps: timestamps,
token: params.token,
transferable: params.transferable
});
}
/// @inheritdoc ISablierLockupDynamic
function createWithTimestampsLD(
Lockup.CreateWithTimestamps calldata params,
LockupDynamic.Segment[] calldata segments
)
external
payable
override
noDelegateCall
returns (uint256 streamId)
{
// Checks, Effects and Interactions: create the stream.
streamId = _createLD({
cancelable: params.cancelable,
depositAmount: params.depositAmount,
recipient: params.recipient,
segments: segments,
sender: params.sender,
shape: params.shape,
timestamps: params.timestamps,
token: params.token,
transferable: params.transferable
});
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev See the documentation for the user-facing functions that call this private function.
function _createLD(
bool cancelable,
uint128 depositAmount,
address recipient,
LockupDynamic.Segment[] memory segments,
address sender,
string memory shape,
Lockup.Timestamps memory timestamps,
IERC20 token,
bool transferable
)
private
returns (uint256 streamId)
{
// Check: validate the user-provided parameters and segments.
Helpers.checkCreateLD({
sender: sender,
timestamps: timestamps,
depositAmount: depositAmount,
segments: segments,
token: address(token),
nativeToken: nativeToken,
shape: shape
});
// Load the stream ID in a variable.
streamId = nextStreamId;
// Effect: store the segments. Since Solidity lacks a syntax for copying arrays of structs directly from
// memory to storage, a manual approach is necessary. See https://github.com/ethereum/solidity/issues/12783.
uint256 segmentCount = segments.length;
for (uint256 i = 0; i < segmentCount; ++i) {
_segments[streamId].push(segments[i]);
}
// Effect: create the stream, mint the NFT and transfer the deposit amount.
_create({
cancelable: cancelable,
depositAmount: depositAmount,
lockupModel: Lockup.Model.LOCKUP_DYNAMIC,
recipient: recipient,
sender: sender,
streamId: streamId,
timestamps: timestamps,
token: token,
transferable: transferable
});
// Log the newly created stream.
emit ISablierLockupDynamic.CreateLockupDynamicStream({
streamId: streamId,
commonParams: Lockup.CreateEventCommon({
funder: msg.sender,
sender: sender,
recipient: recipient,
depositAmount: depositAmount,
token: token,
cancelable: cancelable,
transferable: transferable,
timestamps: timestamps,
shape: shape
}),
segments: segments
});
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.22;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { NoDelegateCall } from "@sablier/evm-utils/src/NoDelegateCall.sol";
import { ISablierLockupLinear } from "../interfaces/ISablierLockupLinear.sol";
import { Helpers } from "../libraries/Helpers.sol";
import { Lockup } from "../types/Lockup.sol";
import { LockupLinear } from "../types/LockupLinear.sol";
import { SablierLockupState } from "./SablierLockupState.sol";
/// @title SablierLockupLinear
/// @notice See the documentation in {ISablierLockupLinear}.
abstract contract SablierLockupLinear is
ISablierLockupLinear, // 1 inherited component
NoDelegateCall, // 0 inherited components
SablierLockupState // 1 inherited component
{
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc ISablierLockupLinear
function createWithDurationsLL(
Lockup.CreateWithDurations calldata params,
LockupLinear.UnlockAmounts calldata unlockAmounts,
LockupLinear.Durations calldata durations
)
external
payable
override
noDelegateCall
returns (uint256 streamId)
{
// Set the current block timestamp as the stream's start time.
Lockup.Timestamps memory timestamps = Lockup.Timestamps({ start: uint40(block.timestamp), end: 0 });
uint40 cliffTime;
// Calculate the cliff time and the end time.
if (durations.cliff > 0) {
cliffTime = timestamps.start + durations.cliff;
}
timestamps.end = timestamps.start + durations.total;
// Checks, Effects and Interactions: create the stream.
streamId = _createLL({
cancelable: params.cancelable,
cliffTime: cliffTime,
depositAmount: params.depositAmount,
recipient: params.recipient,
sender: params.sender,
shape: params.shape,
timestamps: timestamps,
token: params.token,
transferable: params.transferable,
unlockAmounts: unlockAmounts
});
}
/// @inheritdoc ISablierLockupLinear
function createWithTimestampsLL(
Lockup.CreateWithTimestamps calldata params,
LockupLinear.UnlockAmounts calldata unlockAmounts,
uint40 cliffTime
)
external
payable
override
noDelegateCall
returns (uint256 streamId)
{
// Checks, Effects and Interactions: create the stream.
streamId = _createLL({
cancelable: params.cancelable,
cliffTime: cliffTime,
depositAmount: params.depositAmount,
recipient: params.recipient,
sender: params.sender,
shape: params.shape,
timestamps: params.timestamps,
token: params.token,
transferable: params.transferable,
unlockAmounts: unlockAmounts
});
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev See the documentation for the user-facing functions that call this private function.
function _createLL(
bool cancelable,
uint40 cliffTime,
uint128 depositAmount,
address recipient,
address sender,
string memory shape,
Lockup.Timestamps memory timestamps,
IERC20 token,
bool transferable,
LockupLinear.UnlockAmounts memory unlockAmounts
)
private
returns (uint256 streamId)
{
// Check: validate the user-provided parameters and cliff time.
Helpers.checkCreateLL({
sender: sender,
timestamps: timestamps,
cliffTime: cliffTime,
depositAmount: depositAmount,
unlockAmounts: unlockAmounts,
token: address(token),
nativeToken: nativeToken,
shape: shape
});
// Load the stream ID in a variable.
streamId = nextStreamId;
// Effect: set the start and cliff unlock amounts.
_unlockAmounts[streamId] = unlockAmounts;
// Effect: update cliff time.
_cliffs[streamId] = cliffTime;
// Effect: create the stream, mint the NFT and transfer the deposit amount.
_create({
cancelable: cancelable,
depositAmount: depositAmount,
lockupModel: Lockup.Model.LOCKUP_LINEAR,
recipient: recipient,
sender: sender,
streamId: streamId,
timestamps: timestamps,
token: token,
transferable: transferable
});
// Log the newly created stream.
emit ISablierLockupLinear.CreateLockupLinearStream({
streamId: streamId,
commonParams: Lockup.CreateEventCommon({
funder: msg.sender,
sender: sender,
recipient: recipient,
depositAmount: depositAmount,
token: token,
cancelable: cancelable,
transferable: transferable,
timestamps: timestamps,
shape: shape
}),
cliffTime: cliffTime,
unlockAmounts: unlockAmounts
});
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.22;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { ILockupNFTDescriptor } from "../interfaces/ILockupNFTDescriptor.sol";
import { ISablierLockupState } from "../interfaces/ISablierLockupState.sol";
import { Errors } from "../libraries/Errors.sol";
import { Lockup } from "../types/Lockup.sol";
import { LockupDynamic } from "../types/LockupDynamic.sol";
import { LockupLinear } from "../types/LockupLinear.sol";
import { LockupTranched } from "../types/LockupTranched.sol";
/// @title SablierLockupState
/// @notice See the documentation in {ISablierLockupState}.
abstract contract SablierLockupState is ISablierLockupState {
/*//////////////////////////////////////////////////////////////////////////
STATE VARIABLES
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc ISablierLockupState
mapping(IERC20 token => uint256 amount) public override aggregateAmount;
/// @inheritdoc ISablierLockupState
address public override nativeToken;
/// @inheritdoc ISablierLockupState
uint256 public override nextStreamId;
/// @inheritdoc ISablierLockupState
ILockupNFTDescriptor public override nftDescriptor;
/// @dev Mapping of contracts allowed to hook to Sablier when a stream is canceled or when tokens are withdrawn.
mapping(address recipient => bool allowed) internal _allowedToHook;
/// @dev Cliff timestamp mapped by stream IDs, used in LL streams.
mapping(uint256 streamId => uint40 cliffTime) internal _cliffs;
/// @dev Stream segments mapped by stream IDs, used in LD streams.
mapping(uint256 streamId => LockupDynamic.Segment[] segments) internal _segments;
/// @dev Lockup streams mapped by unsigned integers.
mapping(uint256 id => Lockup.Stream stream) internal _streams;
/// @dev Stream tranches mapped by stream IDs, used in LT streams.
mapping(uint256 streamId => LockupTranched.Tranche[] tranches) internal _tranches;
/// @dev Unlock amounts mapped by stream IDs, used in LL streams.
mapping(uint256 streamId => LockupLinear.UnlockAmounts unlockAmounts) internal _unlockAmounts;
/*//////////////////////////////////////////////////////////////////////////
MODIFIERS
//////////////////////////////////////////////////////////////////////////*/
/// @dev Checks that `streamId` does not reference a null stream.
modifier notNull(uint256 streamId) {
_notNull(streamId);
_;
}
/*//////////////////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////////////////*/
/// @param initialNFTDescriptor The address of the initial NFT descriptor.
constructor(address initialNFTDescriptor) {
// Set the next stream to 1.
nextStreamId = 1;
// Set the NFT Descriptor.
nftDescriptor = ILockupNFTDescriptor(initialNFTDescriptor);
}
/*//////////////////////////////////////////////////////////////////////////
USER-FACING READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc ISablierLockupState
function getCliffTime(uint256 streamId) external view override notNull(streamId) returns (uint40 cliffTime) {
if (_streams[streamId].lockupModel != Lockup.Model.LOCKUP_LINEAR) {
revert Errors.SablierLockupState_NotExpectedModel(
_streams[streamId].lockupModel, Lockup.Model.LOCKUP_LINEAR
);
}
cliffTime = _cliffs[streamId];
}
/// @inheritdoc ISablierLockupState
function getDepositedAmount(uint256 streamId)
external
view
override
notNull(streamId)
returns (uint128 depositedAmount)
{
depositedAmount = _streams[streamId].amounts.deposited;
}
/// @inheritdoc ISablierLockupState
function getEndTime(uint256 streamId) external view override notNull(streamId) returns (uint40 endTime) {
endTime = _streams[streamId].endTime;
}
/// @inheritdoc ISablierLockupState
function getLockupModel(uint256 streamId)
external
view
override
notNull(streamId)
returns (Lockup.Model lockupModel)
{
lockupModel = _streams[streamId].lockupModel;
}
/// @inheritdoc ISablierLockupState
function getRefundedAmount(uint256 streamId)
external
view
override
notNull(streamId)
returns (uint128 refundedAmount)
{
refundedAmount = _streams[streamId].amounts.refunded;
}
/// @inheritdoc ISablierLockupState
function getSegments(uint256 streamId)
external
view
override
notNull(streamId)
returns (LockupDynamic.Segment[] memory segments)
{
if (_streams[streamId].lockupModel != Lockup.Model.LOCKUP_DYNAMIC) {
revert Errors.SablierLockupState_NotExpectedModel(
_streams[streamId].lockupModel, Lockup.Model.LOCKUP_DYNAMIC
);
}
segments = _segments[streamId];
}
/// @inheritdoc ISablierLockupState
function getSender(uint256 streamId) external view override notNull(streamId) returns (address sender) {
sender = _streams[streamId].sender;
}
/// @inheritdoc ISablierLockupState
function getStartTime(uint256 streamId) external view override notNull(streamId) returns (uint40 startTime) {
startTime = _streams[streamId].startTime;
}
/// @inheritdoc ISablierLockupState
function getTranches(uint256 streamId)
external
view
override
notNull(streamId)
returns (LockupTranched.Tranche[] memory tranches)
{
if (_streams[streamId].lockupModel != Lockup.Model.LOCKUP_TRANCHED) {
revert Errors.SablierLockupState_NotExpectedModel(
_streams[streamId].lockupModel, Lockup.Model.LOCKUP_TRANCHED
);
}
tranches = _tranches[streamId];
}
/// @inheritdoc ISablierLockupState
function getUnderlyingToken(uint256 streamId) external view override notNull(streamId) returns (IERC20 token) {
token = _streams[streamId].token;
}
/// @inheritdoc ISablierLockupState
function getUnlockAmounts(uint256 streamId)
external
view
override
notNull(streamId)
returns (LockupLinear.UnlockAmounts memory unlockAmounts)
{
if (_streams[streamId].lockupModel != Lockup.Model.LOCKUP_LINEAR) {
revert Errors.SablierLockupState_NotExpectedModel(
_streams[streamId].lockupModel, Lockup.Model.LOCKUP_LINEAR
);
}
unlockAmounts = _unlockAmounts[streamId];
}
/// @inheritdoc ISablierLockupState
function getWithdrawnAmount(uint256 streamId)
external
view
override
notNull(streamId)
returns (uint128 withdrawnAmount)
{
withdrawnAmount = _streams[streamId].amounts.withdrawn;
}
/// @inheritdoc ISablierLockupState
function isAllowedToHook(address recipient) external view returns (bool result) {
result = _allowedToHook[recipient];
}
/// @inheritdoc ISablierLockupState
function isCancelable(uint256 streamId) external view override notNull(streamId) returns (bool result) {
if (_statusOf(streamId) != Lockup.Status.SETTLED) {
result = _streams[streamId].isCancelable;
}
}
/// @inheritdoc ISablierLockupState
function isDepleted(uint256 streamId) external view override notNull(streamId) returns (bool result) {
result = _streams[streamId].isDepleted;
}
/// @inheritdoc ISablierLockupState
function isStream(uint256 streamId) external view override returns (bool result) {
// Since {Helpers._checkCreateStream} reverts if the sender address is zero, this can be used to check whether
// the stream exists.
result = _streams[streamId].sender != address(0);
}
/// @inheritdoc ISablierLockupState
function isTransferable(uint256 streamId) external view override notNull(streamId) returns (bool result) {
result = _streams[streamId].isTransferable;
}
/// @inheritdoc ISablierLockupState
function wasCanceled(uint256 streamId) external view override notNull(streamId) returns (bool result) {
result = _streams[streamId].wasCanceled;
}
/*//////////////////////////////////////////////////////////////////////////
INTERNAL READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev Retrieves the stream's status without performing a null check.
function _statusOf(uint256 streamId) internal view returns (Lockup.Status) {
if (_streams[streamId].isDepleted) {
return Lockup.Status.DEPLETED;
} else if (_streams[streamId].wasCanceled) {
return Lockup.Status.CANCELED;
}
if (block.timestamp < _streams[streamId].startTime) {
return Lockup.Status.PENDING;
}
if (_streamedAmountOf(streamId) < _streams[streamId].amounts.deposited) {
return Lockup.Status.STREAMING;
} else {
return Lockup.Status.SETTLED;
}
}
/// @notice Calculates the streamed amount of the stream.
/// @dev This function is implemented by child contract. The logic varies according to the distribution model.
function _streamedAmountOf(uint256 streamId) internal view virtual returns (uint128);
/*//////////////////////////////////////////////////////////////////////////
INTERNAL STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice This function is implemented by {SablierLockup} and is used in the {SablierLockupDynamic},
/// {SablierLockupLinear} and {SablierLockupTranched} contracts.
/// @dev It updates state variables based on the stream parameters, mints an NFT to the recipient, bumps stream ID,
/// and transfers the deposit amount.
function _create(
bool cancelable,
uint128 depositAmount,
Lockup.Model lockupModel,
address recipient,
address sender,
uint256 streamId,
Lockup.Timestamps memory timestamps,
IERC20 token,
bool transferable
)
internal
virtual
{ }
/*//////////////////////////////////////////////////////////////////////////
PRIVATE READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev A private function is used instead of inlining this logic in a modifier because Solidity copies modifiers
/// into every function that uses them.
function _notNull(uint256 streamId) private view {
// Since {Helpers._checkCreateStream} reverts if the sender address is zero, this can be used to check whether
// the stream exists.
if (_streams[streamId].sender == address(0)) {
revert Errors.SablierLockupState_Null(streamId);
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.22;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { NoDelegateCall } from "@sablier/evm-utils/src/NoDelegateCall.sol";
import { ISablierLockupTranched } from "../interfaces/ISablierLockupTranched.sol";
import { Helpers } from "../libraries/Helpers.sol";
import { Lockup } from "../types/Lockup.sol";
import { LockupTranched } from "../types/LockupTranched.sol";
import { SablierLockupState } from "./SablierLockupState.sol";
/// @title SablierLockupTranched
/// @notice See the documentation in {ISablierLockupTranched}.
abstract contract SablierLockupTranched is
ISablierLockupTranched, // 1 inherited component
NoDelegateCall, // 0 inherited components
SablierLockupState // 1 inherited component
{
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @inheritdoc ISablierLockupTranched
function createWithDurationsLT(
Lockup.CreateWithDurations calldata params,
LockupTranched.TrancheWithDuration[] calldata tranchesWithDuration
)
external
payable
override
noDelegateCall
returns (uint256 streamId)
{
// Use the block timestamp as the start time.
uint40 startTime = uint40(block.timestamp);
// Generate the canonical tranches.
LockupTranched.Tranche[] memory tranches = Helpers.calculateTrancheTimestamps(tranchesWithDuration, startTime);
// Declare the timestamps for the stream.
Lockup.Timestamps memory timestamps =
Lockup.Timestamps({ start: startTime, end: tranches[tranches.length - 1].timestamp });
// Checks, Effects and Interactions: create the stream.
streamId = _createLT({
cancelable: params.cancelable,
depositAmount: params.depositAmount,
recipient: params.recipient,
sender: params.sender,
shape: params.shape,
timestamps: timestamps,
token: params.token,
tranches: tranches,
transferable: params.transferable
});
}
/// @inheritdoc ISablierLockupTranched
function createWithTimestampsLT(
Lockup.CreateWithTimestamps calldata params,
LockupTranched.Tranche[] calldata tranches
)
external
payable
override
noDelegateCall
returns (uint256 streamId)
{
// Checks, Effects and Interactions: create the stream.
streamId = _createLT({
cancelable: params.cancelable,
depositAmount: params.depositAmount,
recipient: params.recipient,
sender: params.sender,
shape: params.shape,
timestamps: params.timestamps,
token: params.token,
tranches: tranches,
transferable: params.transferable
});
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev See the documentation for the user-facing functions that call this private function.
function _createLT(
bool cancelable,
uint128 depositAmount,
address recipient,
address sender,
string memory shape,
Lockup.Timestamps memory timestamps,
IERC20 token,
bool transferable,
LockupTranched.Tranche[] memory tranches
)
private
returns (uint256 streamId)
{
// Check: validate the user-provided parameters and tranches.
Helpers.checkCreateLT({
sender: sender,
timestamps: timestamps,
depositAmount: depositAmount,
tranches: tranches,
token: address(token),
nativeToken: nativeToken,
shape: shape
});
// Load the stream ID in a variable.
streamId = nextStreamId;
// Effect: store the tranches. Since Solidity lacks a syntax for copying arrays of structs directly from
// memory to storage, a manual approach is necessary. See https://github.com/ethereum/solidity/issues/12783.
uint256 trancheCount = tranches.length;
for (uint256 i = 0; i < trancheCount; ++i) {
_tranches[streamId].push(tranches[i]);
}
// Effect: create the stream, mint the NFT and transfer the deposit amount.
_create({
cancelable: cancelable,
depositAmount: depositAmount,
lockupModel: Lockup.Model.LOCKUP_TRANCHED,
recipient: recipient,
sender: sender,
streamId: streamId,
timestamps: timestamps,
token: token,
transferable: transferable
});
// Log the newly created stream.
emit ISablierLockupTranched.CreateLockupTranchedStream({
streamId: streamId,
commonParams: Lockup.CreateEventCommon({
funder: msg.sender,
sender: sender,
recipient: recipient,
depositAmount: depositAmount,
token: token,
cancelable: cancelable,
transferable: transferable,
timestamps: timestamps,
shape: shape
}),
tranches: tranches
});
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
/// @title ILockupNFTDescriptor
/// @notice This contract generates the URI describing the Sablier stream NFTs.
/// @dev Inspired by Uniswap V3 Positions NFTs.
interface ILockupNFTDescriptor {
/*//////////////////////////////////////////////////////////////////////////
USER-FACING READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Produces the URI describing a particular stream NFT.
/// @dev This is a data URI with the JSON contents directly inlined.
/// @param sablier The address of the Sablier contract the stream was created in.
/// @param streamId The ID of the stream for which to produce a description.
/// @return uri The URI of the ERC721-compliant metadata.
function tokenURI(IERC721Metadata sablier, uint256 streamId) external view returns (string memory uri);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IERC4906 } from "@openzeppelin/contracts/interfaces/IERC4906.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import { IBatch } from "@sablier/evm-utils/src/interfaces/IBatch.sol";
import { IComptrollerable } from "@sablier/evm-utils/src/interfaces/IComptrollerable.sol";
import { ISablierComptroller } from "@sablier/evm-utils/src/interfaces/ISablierComptroller.sol";
import { Lockup } from "../types/Lockup.sol";
import { ILockupNFTDescriptor } from "./ILockupNFTDescriptor.sol";
import { ISablierLockupDynamic } from "./ISablierLockupDynamic.sol";
import { ISablierLockupLinear } from "./ISablierLockupLinear.sol";
import { ISablierLockupTranched } from "./ISablierLockupTranched.sol";
/// @title ISablierLockup
/// @notice Interface to manage Lockup streams with various distribution models.
interface ISablierLockup is
IBatch, // 0 inherited components
IComptrollerable, // 0 inherited components
IERC4906, // 2 inherited components
IERC721Metadata, // 2 inherited components
ISablierLockupDynamic, // 1 inherited component
ISablierLockupLinear, // 1 inherited component
ISablierLockupTranched // 1 inherited component
{
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when the comptroller allows a new recipient contract to hook to Sablier.
/// @param comptroller The address of the current comptroller.
/// @param recipient The address of the recipient contract put on the allowlist.
event AllowToHook(ISablierComptroller indexed comptroller, address indexed recipient);
/// @notice Emitted when a stream is canceled.
/// @param streamId The ID of the stream.
/// @param sender The address of the stream's sender.
/// @param recipient The address of the stream's recipient.
/// @param token The contract address of the ERC-20 token that has been distributed.
/// @param senderAmount The amount of tokens refunded to the stream's sender, denoted in units of the token's
/// decimals.
/// @param recipientAmount The amount of tokens left for the stream's recipient to withdraw, denoted in units of the
/// token's decimals.
event CancelLockupStream(
uint256 streamId,
address indexed sender,
address indexed recipient,
IERC20 indexed token,
uint128 senderAmount,
uint128 recipientAmount
);
/// @notice Emitted when canceling multiple streams and one particular cancellation reverts.
/// @param streamId The ID of the stream that reverted the cancellation.
/// @param revertData The error data returned by the reverted cancel.
event InvalidStreamInCancelMultiple(uint256 indexed streamId, bytes revertData);
/// @notice Emitted when withdrawing from multiple streams and one particular withdrawal reverts.
/// @param streamId The ID of the stream that reverted the withdrawal.
/// @param revertData The error data returned by the reverted withdraw.
event InvalidWithdrawalInWithdrawMultiple(uint256 indexed streamId, bytes revertData);
/// @notice Emitted when a sender gives up the right to cancel a stream.
/// @param streamId The ID of the stream.
event RenounceLockupStream(uint256 indexed streamId);
/// @notice Emitted when the comptroller sets a new NFT descriptor contract.
/// @param comptroller The address of the current comptroller.
/// @param oldNFTDescriptor The address of the old NFT descriptor contract.
/// @param newNFTDescriptor The address of the new NFT descriptor contract.
event SetNFTDescriptor(
ISablierComptroller indexed comptroller,
ILockupNFTDescriptor indexed oldNFTDescriptor,
ILockupNFTDescriptor indexed newNFTDescriptor
);
/// @notice Emitted when tokens are withdrawn from a stream.
/// @param streamId The ID of the stream.
/// @param to The address that has received the withdrawn tokens.
/// @param token The contract address of the ERC-20 token that has been withdrawn.
/// @param amount The amount of tokens withdrawn, denoted in units of the token's decimals.
event WithdrawFromLockupStream(uint256 indexed streamId, address indexed to, IERC20 indexed token, uint128 amount);
/*//////////////////////////////////////////////////////////////////////////
USER-FACING READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Calculates the minimum fee in wei required to withdraw from the given stream ID.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function calculateMinFeeWei(uint256 streamId) external view returns (uint256 minFeeWei);
/// @notice Retrieves the stream's recipient.
/// @dev Reverts if the NFT has been burned.
/// @param streamId The stream ID for the query.
function getRecipient(uint256 streamId) external view returns (address recipient);
/// @notice Retrieves a flag indicating whether the stream is cold, i.e. settled, canceled, or depleted.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function isCold(uint256 streamId) external view returns (bool result);
/// @notice Retrieves a flag indicating whether the stream is warm, i.e. either pending or streaming.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function isWarm(uint256 streamId) external view returns (bool result);
/// @notice Calculates the amount that the sender would be refunded if the stream were canceled, denoted in units
/// of the token's decimals.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function refundableAmountOf(uint256 streamId) external view returns (uint128 refundableAmount);
/// @notice Retrieves the stream's status.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function statusOf(uint256 streamId) external view returns (Lockup.Status status);
/// @notice Calculates the amount streamed to the recipient, denoted in units of the token's decimals.
/// @dev Reverts if `streamId` references a null stream.
///
/// Notes:
/// - Upon cancellation of the stream, the amount streamed is calculated as the difference between the deposited
/// amount and the refunded amount. Ultimately, when the stream becomes depleted, the streamed amount is equivalent
/// to the total amount withdrawn.
///
/// @param streamId The stream ID for the query.
function streamedAmountOf(uint256 streamId) external view returns (uint128 streamedAmount);
/// @notice Calculates the amount that the recipient can withdraw from the stream, denoted in units of the token's
/// decimals.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function withdrawableAmountOf(uint256 streamId) external view returns (uint128 withdrawableAmount);
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Allows a recipient contract to hook to Sablier when a stream is canceled or when tokens are withdrawn.
/// Useful for implementing contracts that hold streams on behalf of users, such as vaults or staking contracts.
///
/// @dev Emits an {AllowToHook} event.
///
/// Notes:
/// - Does not revert if the contract is already on the allowlist.
/// - This is an irreversible operation. The contract cannot be removed from the allowlist.
///
/// Requirements:
/// - `msg.sender` must be the comptroller contract.
/// - `recipient` must implement {ISablierLockupRecipient}.
///
/// @param recipient The address of the contract to allow for hooks.
function allowToHook(address recipient) external;
/// @notice Burns the NFT associated with the stream.
///
/// @dev Emits a {Transfer} and {MetadataUpdate} event.
///
/// Requirements:
/// - Must not be delegate called.
/// - `streamId` must reference a depleted stream.
/// - The NFT must exist.
/// - `msg.sender` must be either the NFT owner or an approved third party.
///
/// @param streamId The ID of the stream NFT to burn.
function burn(uint256 streamId) external payable;
/// @notice Cancels the stream and refunds any remaining tokens to the sender.
///
/// @dev Emits a {Transfer}, {CancelLockupStream} and {MetadataUpdate} event.
///
/// Notes:
/// - If there any tokens left for the recipient to withdraw, the stream is marked as canceled. Otherwise, the
/// stream is marked as depleted.
/// - If the address is on the allowlist, this function will invoke a hook on the recipient.
///
/// Requirements:
/// - Must not be delegate called.
/// - The stream must be warm and cancelable.
/// - `msg.sender` must be the stream's sender.
///
/// @param streamId The ID of the stream to cancel.
/// @return refundedAmount The amount refunded to the sender, denoted in units of the token's decimals.
function cancel(uint256 streamId) external payable returns (uint128 refundedAmount);
/// @notice Cancels multiple streams and refunds any remaining tokens to the sender.
///
/// @dev Emits multiple {Transfer}, {CancelLockupStream} and {MetadataUpdate} events. For each reverted
/// cancellation, it emits an {InvalidStreamInCancelMultiple} event.
///
/// Notes:
/// - This function as a whole will not revert if one or more cancellations revert. A zero amount is returned for
/// reverted streams.
/// - Refer to the notes and requirements from {cancel}.
///
/// @param streamIds The IDs of the streams to cancel.
/// @return refundedAmounts The amounts refunded to the sender, denoted in units of the token's decimals.
function cancelMultiple(uint256[] calldata streamIds) external payable returns (uint128[] memory refundedAmounts);
/// @notice Recover the surplus amount of tokens.
///
/// @dev Notes:
/// - The surplus amount is defined as the difference between the total balance of the contract for the provided
/// ERC-20 token and the sum of balances of all streams created using the same ERC-20 token.
///
/// Requirements:
/// - `msg.sender` must be the comptroller contract.
/// - The surplus amount must be greater than zero.
///
/// @param token The contract address of the ERC-20 token to recover for.
/// @param to The address to send the surplus amount.
function recover(IERC20 token, address to) external;
/// @notice Removes the right of the stream's sender to cancel the stream.
///
/// @dev Emits a {RenounceLockupStream} event.
///
/// Notes:
/// - This is an irreversible operation.
///
/// Requirements:
/// - Must not be delegate called.
/// - `streamId` must reference a warm stream.
/// - `msg.sender` must be the stream's sender.
/// - The stream must be cancelable.
///
/// @param streamId The ID of the stream to renounce.
function renounce(uint256 streamId) external payable;
/// @notice Sets the native token address. Once set, it cannot be changed.
/// @dev For more information, see the documentation for {nativeToken}.
///
/// Notes:
/// - If `newNativeToken` is zero address, the function does not revert.
///
/// Requirements:
/// - `msg.sender` must be the comptroller contract.
/// - The current native token must be zero address.
/// @param newNativeToken The address of the native token.
function setNativeToken(address newNativeToken) external;
/// @notice Sets a new NFT descriptor contract, which produces the URI describing the Sablier stream NFTs.
///
/// @dev Emits a {SetNFTDescriptor} and {BatchMetadataUpdate} event.
///
/// Notes:
/// - Does not revert if the NFT descriptor is the same.
///
/// Requirements:
/// - `msg.sender` must be the comptroller contract.
///
/// @param newNFTDescriptor The address of the new NFT descriptor contract.
function setNFTDescriptor(ILockupNFTDescriptor newNFTDescriptor) external;
/// @notice Withdraws the provided amount of tokens from the stream to the `to` address.
///
/// @dev Emits a {Transfer}, {WithdrawFromLockupStream} and {MetadataUpdate} event.
///
/// Notes:
/// - If `msg.sender` is not the recipient and the address is on the allowlist, this function will invoke a hook on
/// the recipient.
/// - The minimum fee in wei is calculated for the stream's sender using the {SablierComptroller} contract.
///
/// Requirements:
/// - Must not be delegate called.
/// - `streamId` must not reference a null or depleted stream.
/// - `to` must not be the zero address.
/// - `amount` must be greater than zero and must not exceed the withdrawable amount.
/// - `to` must be the recipient if `msg.sender` is not the stream's recipient or an approved third party.
/// - `msg.value` must be greater than or equal to the minimum fee in wei for the stream's sender.
///
/// @param streamId The ID of the stream to withdraw from.
/// @param to The address receiving the withdrawn tokens.
/// @param amount The amount to withdraw, denoted in units of the token's decimals.
function withdraw(uint256 streamId, address to, uint128 amount) external payable;
/// @notice Withdraws the maximum withdrawable amount from the stream to the provided address `to`.
///
/// @dev Emits a {Transfer}, {WithdrawFromLockupStream} and {MetadataUpdate} event.
///
/// Notes:
/// - Refer to the notes in {withdraw}.
///
/// Requirements:
/// - Refer to the requirements in {withdraw}.
///
/// @param streamId The ID of the stream to withdraw from.
/// @param to The address receiving the withdrawn tokens.
/// @return withdrawnAmount The amount withdrawn, denoted in units of the token's decimals.
function withdrawMax(uint256 streamId, address to) external payable returns (uint128 withdrawnAmount);
/// @notice Withdraws the maximum withdrawable amount from the stream to the current recipient, and transfers the
/// NFT to `newRecipient`.
///
/// @dev Emits a {WithdrawFromLockupStream}, {Transfer} and {MetadataUpdate} event.
///
/// Notes:
/// - If the withdrawable amount is zero, the withdrawal is skipped.
/// - Refer to the notes in {withdraw}.
///
/// Requirements:
/// - `msg.sender` must be either the NFT owner or an approved third party.
/// - Refer to the requirements in {withdraw}.
/// - Refer to the requirements in {IERC721.transferFrom}.
///
/// @param streamId The ID of the stream NFT to transfer.
/// @param newRecipient The address of the new owner of the stream NFT.
/// @return withdrawnAmount The amount withdrawn, denoted in units of the token's decimals.
function withdrawMaxAndTransfer(
uint256 streamId,
address newRecipient
)
external
payable
returns (uint128 withdrawnAmount);
/// @notice Withdraws tokens from streams to the recipient of each stream.
///
/// @dev Emits multiple {Transfer}, {WithdrawFromLockupStream} and {MetadataUpdate} events. For each reverting
/// withdrawal, it emits an {InvalidWithdrawalInWithdrawMultiple} event.
///
/// Notes:
/// - This function as a whole will not revert if one or more withdrawals revert.
/// - This function attempts to call a hook on the recipient of each stream, unless `msg.sender` is the recipient.
/// - Refer to the notes and requirements from {withdraw}.
///
/// Requirements:
/// - Must not be delegate called.
/// - There must be an equal number of `streamIds` and `amounts`.
///
/// @param streamIds The IDs of the streams to withdraw from.
/// @param amounts The amounts to withdraw, denoted in units of the token's decimals.
function withdrawMultiple(uint256[] calldata streamIds, uint128[] calldata amounts) external payable;
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
/// @title ISablierLockupRecipient
/// @notice Interface for recipient contracts capable of reacting to cancellations and withdrawals. For this to be able
/// to hook into Sablier, it must fully implement this interface and it must have been allowlisted in the Lockup
/// contract.
/// @dev See {IERC165-supportsInterface}.
/// The implementation MUST implement the {IERC165-supportsInterface} method, which MUST return `true` when called with
/// `0xf8ee98d3`, i.e. `type(ISablierLockupRecipient).interfaceId`.
interface ISablierLockupRecipient is IERC165 {
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Responds to cancellations.
///
/// @dev Notes:
/// - The function MUST return the selector `ISablierLockupRecipient.onSablierLockupCancel.selector`.
/// - If this function reverts, the execution in the Lockup contract will revert as well.
///
/// @param streamId The ID of the canceled stream.
/// @param sender The stream's sender, who canceled the stream.
/// @param senderAmount The amount of tokens refunded to the stream's sender, denoted in units of the token's
/// decimals.
/// @param recipientAmount The amount of tokens left for the stream's recipient to withdraw, denoted in units of
/// the token's decimals.
///
/// @return selector The selector of this function needed to validate the hook.
function onSablierLockupCancel(
uint256 streamId,
address sender,
uint128 senderAmount,
uint128 recipientAmount
)
external
returns (bytes4 selector);
/// @notice Responds to withdrawals triggered by any address except the contract implementing this interface.
///
/// @dev Notes:
/// - The function MUST return the selector `ISablierLockupRecipient.onSablierLockupWithdraw.selector`.
/// - If this function reverts, the execution in the Lockup contract will revert as well.
///
/// @param streamId The ID of the stream being withdrawn from.
/// @param caller The original `msg.sender` address that triggered the withdrawal.
/// @param to The address receiving the withdrawn tokens.
/// @param amount The amount of tokens withdrawn, denoted in units of the token's decimals.
///
/// @return selector The selector of this function needed to validate the hook.
function onSablierLockupWithdraw(
uint256 streamId,
address caller,
address to,
uint128 amount
)
external
returns (bytes4 selector);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { Lockup } from "../types/Lockup.sol";
/// @title Errors
/// @notice Library containing all custom errors the protocol may revert with.
library Errors {
/*//////////////////////////////////////////////////////////////////////////
SABLIER-BATCH-LOCKUP
//////////////////////////////////////////////////////////////////////////*/
error SablierBatchLockup_BatchSizeZero();
/*//////////////////////////////////////////////////////////////////////////
HELPERS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when trying to create a linear stream with a cliff time not strictly less than the end time.
error SablierHelpers_CliffTimeNotLessThanEndTime(uint40 cliffTime, uint40 endTime);
/// @notice Thrown when trying to create a stream with a non zero cliff unlock amount when the cliff time is zero.
error SablierHelpers_CliffTimeZeroUnlockAmountNotZero(uint128 cliffUnlockAmount);
/// @notice Thrown when trying to create a stream with the native token.
error SablierHelpers_CreateNativeToken(address nativeToken);
/// @notice Thrown when trying to create a dynamic stream with a deposit amount not equal to the sum of the segment
/// amounts.
error SablierHelpers_DepositAmountNotEqualToSegmentAmountsSum(uint128 depositAmount, uint128 segmentAmountsSum);
/// @notice Thrown when trying to create a tranched stream with a deposit amount not equal to the sum of the tranche
/// amounts.
error SablierHelpers_DepositAmountNotEqualToTrancheAmountsSum(uint128 depositAmount, uint128 trancheAmountsSum);
/// @notice Thrown when trying to create a stream with a zero deposit amount.
error SablierHelpers_DepositAmountZero();
/// @notice Thrown when trying to create a dynamic stream with end time not equal to the last segment's timestamp.
error SablierHelpers_EndTimeNotEqualToLastSegmentTimestamp(uint40 endTime, uint40 lastSegmentTimestamp);
/// @notice Thrown when trying to create a tranched stream with end time not equal to the last tranche's timestamp.
error SablierHelpers_EndTimeNotEqualToLastTrancheTimestamp(uint40 endTime, uint40 lastTrancheTimestamp);
/// @notice Thrown when trying to create a dynamic stream with no segments.
error SablierHelpers_SegmentCountZero();
/// @notice Thrown when trying to create a dynamic stream with unordered segment timestamps.
error SablierHelpers_SegmentTimestampsNotOrdered(uint256 index, uint40 previousTimestamp, uint40 currentTimestamp);
/// @notice Thrown when trying to create a stream with the sender as the zero address.
error SablierHelpers_SenderZeroAddress();
/// @notice Thrown when trying to create a stream with a shape string exceeding 32 bytes.
error SablierHelpers_ShapeExceeds32Bytes(uint256 shapeLength);
/// @notice Thrown when trying to create a linear stream with a start time not strictly less than the cliff time,
/// when the cliff time does not have a zero value.
error SablierHelpers_StartTimeNotLessThanCliffTime(uint40 startTime, uint40 cliffTime);
/// @notice Thrown when trying to create a linear stream with a start time not strictly less than the end time.
error SablierHelpers_StartTimeNotLessThanEndTime(uint40 startTime, uint40 endTime);
/// @notice Thrown when trying to create a dynamic stream with a start time not strictly less than the first
/// segment timestamp.
error SablierHelpers_StartTimeNotLessThanFirstSegmentTimestamp(uint40 startTime, uint40 firstSegmentTimestamp);
/// @notice Thrown when trying to create a tranched stream with a start time not strictly less than the first
/// tranche timestamp.
error SablierHelpers_StartTimeNotLessThanFirstTrancheTimestamp(uint40 startTime, uint40 firstTrancheTimestamp);
/// @notice Thrown when trying to create a stream with a zero start time.
error SablierHelpers_StartTimeZero();
/// @notice Thrown when trying to create a tranched stream with no tranches.
error SablierHelpers_TrancheCountZero();
/// @notice Thrown when trying to create a tranched stream with unordered tranche timestamps.
error SablierHelpers_TrancheTimestampsNotOrdered(uint256 index, uint40 previousTimestamp, uint40 currentTimestamp);
/// @notice Thrown when trying to create a stream with the sum of the unlock amounts greater than the deposit
/// amount.
error SablierHelpers_UnlockAmountsSumTooHigh(
uint128 depositAmount, uint128 startUnlockAmount, uint128 cliffUnlockAmount
);
/*//////////////////////////////////////////////////////////////////////////
SABLIER-LOCKUP
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when trying to allow to hook a contract that doesn't implement the interface correctly.
error SablierLockup_AllowToHookUnsupportedInterface(address recipient);
/// @notice Thrown when trying to allow to hook an address with no code.
error SablierLockup_AllowToHookZeroCodeSize(address recipient);
/// @notice Thrown when trying to withdraw with a fee amount less than the minimum fee.
error SablierLockup_InsufficientFeePayment(uint256 feePaid, uint256 minFeeWei);
/// @notice Thrown when the fee transfer fails.
error SablierLockup_FeeTransferFailed(address comptroller, uint256 feeAmount);
/// @notice Thrown when the hook does not return the correct selector.
error SablierLockup_InvalidHookSelector(address recipient);
/// @notice Thrown when trying to set the native token address when it is already set.
error SablierLockup_NativeTokenAlreadySet(address nativeToken);
/// @notice Thrown when trying to transfer Stream NFT when transferability is disabled.
error SablierLockup_NotTransferable(uint256 tokenId);
/// @notice Thrown when trying to withdraw an amount greater than the withdrawable amount.
error SablierLockup_Overdraw(uint256 streamId, uint128 amount, uint128 withdrawableAmount);
/// @notice Thrown when trying to cancel or renounce a canceled stream.
error SablierLockup_StreamCanceled(uint256 streamId);
/// @notice Thrown when trying to cancel, renounce, or withdraw from a depleted stream.
error SablierLockup_StreamDepleted(uint256 streamId);
/// @notice Thrown when trying to cancel or renounce a stream that is not cancelable.
error SablierLockup_StreamNotCancelable(uint256 streamId);
/// @notice Thrown when trying to burn a stream that is not depleted.
error SablierLockup_StreamNotDepleted(uint256 streamId);
/// @notice Thrown when trying to cancel or renounce a settled stream.
error SablierLockup_StreamSettled(uint256 streamId);
/// @notice Thrown when `msg.sender` lacks authorization to perform an action.
error SablierLockup_Unauthorized(uint256 streamId, address caller);
/// @notice Thrown when trying to withdraw to an address other than the recipient's.
error SablierLockup_WithdrawalAddressNotRecipient(uint256 streamId, address caller, address to);
/// @notice Thrown when trying to withdraw zero tokens from a stream.
error SablierLockup_WithdrawAmountZero(uint256 streamId);
/// @notice Thrown when trying to withdraw from multiple streams and the number of stream IDs does
/// not match the number of withdraw amounts.
error SablierLockup_WithdrawArrayCountsNotEqual(uint256 streamIdsCount, uint256 amountsCount);
/// @notice Thrown when trying to withdraw to the zero address.
error SablierLockup_WithdrawToZeroAddress(uint256 streamId);
/*//////////////////////////////////////////////////////////////////////////
SABLIER-LOCKUP-STATE
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when a function is called on a stream that does not use the expected Lockup model.
error SablierLockupState_NotExpectedModel(Lockup.Model actualLockupModel, Lockup.Model expectedLockupModel);
/// @notice Thrown when the ID references a null stream.
error SablierLockupState_Null(uint256 streamId);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.22;
import { PRBMathCastingUint128 as CastingUint128 } from "@prb/math/src/casting/Uint128.sol";
import { PRBMathCastingUint40 as CastingUint40 } from "@prb/math/src/casting/Uint40.sol";
import { SD59x18 } from "@prb/math/src/SD59x18.sol";
import { UD60x18, ud } from "@prb/math/src/UD60x18.sol";
import { LockupDynamic } from "../types/LockupDynamic.sol";
import { LockupLinear } from "../types/LockupLinear.sol";
import { LockupTranched } from "../types/LockupTranched.sol";
/// @title LockupMath
/// @notice Provides functions for calculating the streamed amounts in Lockup streams. Note that 'streamed' is
/// synonymous with 'vested'.
library LockupMath {
using CastingUint128 for uint128;
using CastingUint40 for uint40;
/*//////////////////////////////////////////////////////////////////////////
USER-FACING READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Calculates the streamed amount of LD streams.
/// @dev The LD streaming model uses the following distribution function:
///
/// $$
/// f(x) = x^{exp} * csa + \Sigma(esa)
/// $$
///
/// Where:
///
/// - $x$ is the elapsed time divided by the total duration of the current segment.
/// - $exp$ is the current segment exponent.
/// - $csa$ is the current segment amount.
/// - $\Sigma(esa)$ is the sum of all streamed segments' amounts.
///
/// Notes:
/// 1. Normalization to 18 decimals is not needed because there is no mix of amounts with different decimals.
/// 2. The stream's start time must be in the past so that the calculations below do not overflow.
/// 3. The stream's end time must be in the future so that the loop below does not panic with an "index out of
/// bounds" error.
///
/// Assumptions:
/// 1. The sum of all segment amounts does not overflow uint128 and equals the deposited amount.
/// 2. The first segment's timestamp is greater than the start time.
/// 3. The last segment's timestamp equals the end time.
/// 4. The segment timestamps are arranged in ascending order.
function calculateStreamedAmountLD(
uint128 depositedAmount,
uint40 endTime,
LockupDynamic.Segment[] calldata segments,
uint40 startTime,
uint128 withdrawnAmount
)
external
view
returns (uint128)
{
uint40 blockTimestamp = uint40(block.timestamp);
// If the start time is in the future, return zero.
if (startTime > blockTimestamp) {
return 0;
}
// If the end time is not in the future, return the deposited amount.
if (endTime <= blockTimestamp) {
return depositedAmount;
}
unchecked {
// Sum the amounts in all segments that precede the block timestamp.
uint128 previousSegmentAmounts;
uint40 currentSegmentTimestamp = segments[0].timestamp;
uint256 index = 0;
while (currentSegmentTimestamp < blockTimestamp) {
previousSegmentAmounts += segments[index].amount;
index += 1;
currentSegmentTimestamp = segments[index].timestamp;
}
// After exiting the loop, the current segment is at `index`.
SD59x18 currentSegmentAmount = segments[index].amount.intoSD59x18();
SD59x18 currentSegmentExponent = segments[index].exponent.intoSD59x18();
currentSegmentTimestamp = segments[index].timestamp;
uint40 previousTimestamp;
if (index == 0) {
// When the current segment's index is equal to 0, the current segment is the first, so use the start
// time as the previous timestamp.
previousTimestamp = startTime;
} else {
// Otherwise, when the current segment's index is greater than zero, it means that the segment is not
// the first. In this case, use the previous segment's timestamp.
previousTimestamp = segments[index - 1].timestamp;
}
// Calculate how much time has passed since the segment started, and the total duration of the segment.
SD59x18 elapsedTime = (blockTimestamp - previousTimestamp).intoSD59x18();
SD59x18 segmentDuration = (currentSegmentTimestamp - previousTimestamp).intoSD59x18();
// Divide the elapsed time by the total duration of the segment.
SD59x18 elapsedTimePercentage = elapsedTime.div(segmentDuration);
// Calculate the streamed amount using the special formula.
SD59x18 multiplier = elapsedTimePercentage.pow(currentSegmentExponent);
SD59x18 segmentStreamedAmount = multiplier.mul(currentSegmentAmount);
// Although the segment streamed amount should never exceed the total segment amount, this condition is
// checked without asserting to avoid locking tokens in case of a bug. If this situation occurs, the
// amount streamed in the segment is considered zero (except for past withdrawals), and the segment is
// effectively voided.
if (segmentStreamedAmount.gt(currentSegmentAmount)) {
return previousSegmentAmounts > withdrawnAmount ? previousSegmentAmounts : withdrawnAmount;
}
// Calculate the total streamed amount by adding the previous segment amounts and the amount streamed in
// the current segment. Casting to uint128 is safe due to the if statement above.
return previousSegmentAmounts + uint128(segmentStreamedAmount.intoUint256());
}
}
/// @notice Calculates the streamed amount of LL streams.
/// @dev The LL streaming model uses the following distribution function:
///
/// $$
/// ( x * sa + s, block timestamp < cliff time
/// f(x) = (
/// ( x * sa + s + c, block timestamp => cliff time
/// $$
///
/// Where:
///
/// - $x$ is the elapsed time in the streamable range divided by the total streamable range.
/// - $sa$ is the streamable amount, i.e. deposited amount minus unlock amounts' sum.
/// - $s$ is the start unlock amount.
/// - $c$ is the cliff unlock amount.
///
/// Assumptions:
/// 1. The sum of the unlock amounts (start and cliff) does not overflow uint128 and is less than or equal to
/// the deposit amount.
/// 2. The start time is before the end time.
/// 3. If the cliff time is not zero, it is after the start time and before the end time.
function calculateStreamedAmountLL(
uint40 cliffTime,
uint128 depositedAmount,
uint40 endTime,
uint40 startTime,
LockupLinear.UnlockAmounts calldata unlockAmounts,
uint128 withdrawnAmount
)
external
view
returns (uint128)
{
uint40 blockTimestamp = uint40(block.timestamp);
// If the start time is in the future, return zero.
if (startTime > blockTimestamp) {
return 0;
}
// If the cliff time is in the future, return the start unlock amount.
if (cliffTime > blockTimestamp) {
return unlockAmounts.start;
}
// If the end time is not in the future, return the deposited amount.
if (endTime <= blockTimestamp) {
return depositedAmount;
}
unchecked {
uint128 unlockAmountsSum = unlockAmounts.start + unlockAmounts.cliff;
// If the sum of the unlock amounts is greater than or equal to the deposited amount, return the deposited
// amount. The ">=" operator is used as a safety measure in case of a bug, as the sum of the unlock amounts
// should never exceed the deposited amount.
if (unlockAmountsSum >= depositedAmount) {
return depositedAmount;
}
UD60x18 elapsedTime;
UD60x18 streamableRange;
// Calculate the streamable range.
if (cliffTime == 0) {
elapsedTime = ud(blockTimestamp - startTime);
streamableRange = ud(endTime - startTime);
} else {
elapsedTime = ud(blockTimestamp - cliffTime);
streamableRange = ud(endTime - cliffTime);
}
UD60x18 elapsedTimePercentage = elapsedTime.div(streamableRange);
UD60x18 streamableAmount = ud(depositedAmount - unlockAmountsSum);
// The streamed amount is the sum of the unlock amounts plus the product of elapsed time percentage and
// streamable amount.
uint128 streamedAmount = unlockAmountsSum + (elapsedTimePercentage.mul(streamableAmount)).intoUint128();
// Although the streamed amount should never exceed the deposited amount, this condition is checked
// without asserting to avoid locking tokens in case of a bug. If this situation occurs, the withdrawn
// amount is considered to be the streamed amount, and the stream is effectively frozen.
if (streamedAmount > depositedAmount) {
return withdrawnAmount;
}
return streamedAmount;
}
}
/// @notice Calculates the streamed amount of LT streams.
/// @dev The LT streaming model uses the following distribution function:
///
/// $$
/// f(x) = \Sigma(eta)
/// $$
///
/// Where:
///
/// - $\Sigma(eta)$ is the sum of all streamed tranches' amounts.
///
/// Assumptions:
/// 1. The sum of all tranche amounts does not overflow uint128, and equals the deposited amount.
/// 2. The first tranche's timestamp is greater than the start time.
/// 3. The last tranche's timestamp equals the end time.
/// 4. The tranche timestamps are arranged in ascending order.
function calculateStreamedAmountLT(
uint128 depositedAmount,
uint40 endTime,
uint40 startTime,
LockupTranched.Tranche[] calldata tranches
)
external
view
returns (uint128)
{
uint40 blockTimestamp = uint40(block.timestamp);
// If the start time is in the future, return zero.
if (startTime > blockTimestamp) {
return 0;
}
// If the first tranche's timestamp is in the future, return zero.
if (tranches[0].timestamp > blockTimestamp) {
return 0;
}
// If the end time is not in the future, return the deposited amount.
if (endTime <= blockTimestamp) {
return depositedAmount;
}
// Sum the amounts in all tranches that have already been streamed.
// Using unchecked arithmetic is safe because the sum of the tranche amounts is equal to the total amount
// at this point.
uint128 streamedAmount = tranches[0].amount;
uint256 tranchesCount = tranches.length;
for (uint256 i = 1; i < tranchesCount; ++i) {
// The loop breaks at the first tranche with a timestamp in the future. A tranche is considered streamed if
// its timestamp is less than or equal to the block timestamp.
if (tranches[i].timestamp > blockTimestamp) {
break;
}
unchecked {
streamedAmount += tranches[i].amount;
}
}
return streamedAmount;
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
/// @notice Namespace for the structs shared by all Lockup models.
library Lockup {
/// @notice Struct encapsulating the deposit, withdrawn, and refunded amounts, all denoted in units of the token's
/// decimals.
/// @dev The deposited and withdrawn amount are often read together, so declaring them in the same slot saves gas.
/// @param deposited The amount deposited in the stream.
/// @param withdrawn The cumulative amount withdrawn from the stream.
/// @param refunded The amount refunded to the sender. Unless the stream was canceled, this is always zero.
struct Amounts {
// slot 0
uint128 deposited;
uint128 withdrawn;
// slot 1
uint128 refunded;
}
/// @notice Struct encapsulating the common parameters emitted in the stream creation events.
/// @param funder The address funding the stream.
/// @param sender The address distributing the tokens, which is able to cancel the stream.
/// @param recipient The address receiving the tokens, as well as the NFT owner.
/// @param depositAmount The deposit amount, denoted in units of the token's decimals.
/// @param token The contract address of the ERC-20 token to be distributed.
/// @param cancelable Boolean indicating whether the stream is cancelable or not.
/// @param transferable Boolean indicating whether the stream NFT is transferable or not.
/// @param timestamps Struct encapsulating (i) the stream's start time and (ii) end time, all as Unix timestamps.
/// @param shape An optional parameter to specify the shape of the distribution function. This helps differentiate
/// streams in the UI.
struct CreateEventCommon {
address funder;
address sender;
address recipient;
uint128 depositAmount;
IERC20 token;
bool cancelable;
bool transferable;
Lockup.Timestamps timestamps;
string shape;
}
/// @notice Struct encapsulating the parameters of the `createWithDurations` functions.
/// @param sender The address distributing the tokens, with the ability to cancel the stream. It doesn't have to be
/// the same as `msg.sender`.
/// @param recipient The address receiving the tokens, as well as the NFT owner.
/// @param depositAmount The deposit amount, denoted in units of the token's decimals.
/// @param token The contract address of the ERC-20 token to be distributed.
/// @param cancelable Indicates if the stream is cancelable.
/// @param transferable Indicates if the stream NFT is transferable.
/// @param shape An optional parameter to specify the shape of the distribution function. This helps differentiate
/// streams in the UI.
struct CreateWithDurations {
address sender;
address recipient;
uint128 depositAmount;
IERC20 token;
bool cancelable;
bool transferable;
string shape;
}
/// @notice Struct encapsulating the parameters of the `createWithTimestamps` functions.
/// @param sender The address distributing the tokens, with the ability to cancel the stream. It doesn't have to be
/// the same as `msg.sender`.
/// @param recipient The address receiving the tokens, as well as the NFT owner.
/// @param depositAmount The deposit amount, denoted in units of the token's decimals.
/// @param token The contract address of the ERC-20 token to be distributed.
/// @param cancelable Indicates if the stream is cancelable.
/// @param transferable Indicates if the stream NFT is transferable.
/// @param timestamps Struct encapsulating (i) the stream's start time and (ii) end time, both as Unix timestamps.
/// @param shape An optional parameter to specify the shape of the distribution function. This helps differentiate
/// streams in the UI.
struct CreateWithTimestamps {
address sender;
address recipient;
uint128 depositAmount;
IERC20 token;
bool cancelable;
bool transferable;
Timestamps timestamps;
string shape;
}
/// @notice Enum representing the different distribution models used to create Lockup streams.
/// @dev This determines the streaming function used in the calculations of the unlocked tokens.
enum Model {
LOCKUP_LINEAR,
LOCKUP_DYNAMIC,
LOCKUP_TRANCHED
}
/// @notice Enum representing the different statuses of a stream.
/// @dev The status can have a "temperature":
/// 1. Warm: Pending, Streaming. The passage of time alone can change the status.
/// 2. Cold: Settled, Canceled, Depleted. The passage of time alone cannot change the status.
/// @custom:value0 PENDING Stream created but not started; tokens are in a pending state.
/// @custom:value1 STREAMING Active stream where tokens are currently being streamed.
/// @custom:value2 SETTLED All tokens have been streamed; recipient is due to withdraw them.
/// @custom:value3 CANCELED Canceled stream; remaining tokens await recipient's withdrawal.
/// @custom:value4 DEPLETED Depleted stream; all tokens have been withdrawn and/or refunded.
enum Status {
// Warm
PENDING,
STREAMING,
// Cold
SETTLED,
CANCELED,
DEPLETED
}
/// @notice A common data structure to be stored in all Lockup models.
/// @dev The fields are arranged like this to save gas via tight variable packing.
/// @param sender The address distributing the tokens, with the ability to cancel the stream.
/// @param startTime The Unix timestamp indicating the stream's start.
/// @param endTime The Unix timestamp indicating the stream's end.
/// @param isCancelable Boolean indicating if the stream is cancelable.
/// @param wasCanceled Boolean indicating if the stream was canceled.
/// @param token The contract address of the ERC-20 token to be distributed.
/// @param isDepleted Boolean indicating if the stream is depleted.
/// @param isTransferable Boolean indicating if the stream NFT is transferable.
/// @param lockupModel The distribution model of the stream.
/// @param amounts Struct encapsulating the deposit, withdrawn, and refunded amounts, both denoted in units of the
/// token's decimals.
struct Stream {
// slot 0
address sender;
uint40 startTime;
uint40 endTime;
bool isCancelable;
bool wasCanceled;
// slot 1
IERC20 token;
bool isDepleted;
bool isTransferable;
Model lockupModel;
// slot 2 and 3
Amounts amounts;
}
/// @notice Struct encapsulating the Lockup timestamps.
/// @param start The Unix timestamp for the stream's start.
/// @param end The Unix timestamp for the stream's end.
struct Timestamps {
uint40 start;
uint40 end;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)
pragma solidity ^0.8.20;
import {IERC165} from "../utils/introspection/IERC165.sol";// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC721.sol)
pragma solidity ^0.8.20;
import {IERC721} from "../token/ERC721/IERC721.sol";// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)
pragma solidity ^0.8.20;
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 v5.1.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.20;
import {IERC165} from "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC-721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
* a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC-721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must have been allowed to move this token by either {approve} or
* {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
* a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC-721
* or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
* understand this adds an external call which potentially creates a reentrancy vulnerability.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the address zero.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC721/utils/ERC721Utils.sol)
pragma solidity ^0.8.20;
import {IERC721Receiver} from "../IERC721Receiver.sol";
import {IERC721Errors} from "../../../interfaces/draft-IERC6093.sol";
/**
* @dev Library that provide common ERC-721 utility functions.
*
* See https://eips.ethereum.org/EIPS/eip-721[ERC-721].
*
* _Available since v5.1._
*/
library ERC721Utils {
/**
* @dev Performs an acceptance check for the provided `operator` by calling {IERC721Receiver-onERC721Received}
* on the `to` address. The `operator` is generally the address that initiated the token transfer (i.e. `msg.sender`).
*
* The acceptance call is not executed and treated as a no-op if the target address doesn't contain code (i.e. an EOA).
* Otherwise, the recipient must implement {IERC721Receiver-onERC721Received} and return the acceptance magic value to accept
* the transfer.
*/
function checkOnERC721Received(
address operator,
address from,
address to,
uint256 tokenId,
bytes memory data
) internal {
if (to.code.length > 0) {
try IERC721Receiver(to).onERC721Received(operator, from, tokenId, data) returns (bytes4 retval) {
if (retval != IERC721Receiver.onERC721Received.selector) {
// Token rejected
revert IERC721Errors.ERC721InvalidReceiver(to);
}
} catch (bytes memory reason) {
if (reason.length == 0) {
// non-IERC721Receiver implementer
revert IERC721Errors.ERC721InvalidReceiver(to);
} else {
assembly ("memory-safe") {
revert(add(32, reason), mload(reason))
}
}
}
}
}
}// 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 v5.3.0) (utils/Strings.sol)
pragma solidity ^0.8.20;
import {Math} from "./math/Math.sol";
import {SafeCast} from "./math/SafeCast.sol";
import {SignedMath} from "./math/SignedMath.sol";
/**
* @dev String operations.
*/
library Strings {
using SafeCast for *;
bytes16 private constant HEX_DIGITS = "0123456789abcdef";
uint8 private constant ADDRESS_LENGTH = 20;
uint256 private constant SPECIAL_CHARS_LOOKUP =
(1 << 0x08) | // backspace
(1 << 0x09) | // tab
(1 << 0x0a) | // newline
(1 << 0x0c) | // form feed
(1 << 0x0d) | // carriage return
(1 << 0x22) | // double quote
(1 << 0x5c); // backslash
/**
* @dev The `value` string doesn't fit in the specified `length`.
*/
error StringsInsufficientHexLength(uint256 value, uint256 length);
/**
* @dev The string being parsed contains characters that are not in scope of the given base.
*/
error StringsInvalidChar();
/**
* @dev The string being parsed is not a properly formatted address.
*/
error StringsInvalidAddressFormat();
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = Math.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
assembly ("memory-safe") {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
assembly ("memory-safe") {
mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `int256` to its ASCII `string` decimal representation.
*/
function toStringSigned(int256 value) internal pure returns (string memory) {
return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
uint256 localValue = value;
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = HEX_DIGITS[localValue & 0xf];
localValue >>= 4;
}
if (localValue != 0) {
revert StringsInsufficientHexLength(value, length);
}
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
* representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its checksummed ASCII `string` hexadecimal
* representation, according to EIP-55.
*/
function toChecksumHexString(address addr) internal pure returns (string memory) {
bytes memory buffer = bytes(toHexString(addr));
// hash the hex part of buffer (skip length + 2 bytes, length 40)
uint256 hashValue;
assembly ("memory-safe") {
hashValue := shr(96, keccak256(add(buffer, 0x22), 40))
}
for (uint256 i = 41; i > 1; --i) {
// possible values for buffer[i] are 48 (0) to 57 (9) and 97 (a) to 102 (f)
if (hashValue & 0xf > 7 && uint8(buffer[i]) > 96) {
// case shift by xoring with 0x20
buffer[i] ^= 0x20;
}
hashValue >>= 4;
}
return string(buffer);
}
/**
* @dev Returns true if the two strings are equal.
*/
function equal(string memory a, string memory b) internal pure returns (bool) {
return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
}
/**
* @dev Parse a decimal string and returns the value as a `uint256`.
*
* Requirements:
* - The string must be formatted as `[0-9]*`
* - The result must fit into an `uint256` type
*/
function parseUint(string memory input) internal pure returns (uint256) {
return parseUint(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseUint-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `[0-9]*`
* - The result must fit into an `uint256` type
*/
function parseUint(string memory input, uint256 begin, uint256 end) internal pure returns (uint256) {
(bool success, uint256 value) = tryParseUint(input, begin, end);
if (!success) revert StringsInvalidChar();
return value;
}
/**
* @dev Variant of {parseUint-string} that returns false if the parsing fails because of an invalid character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseUint(string memory input) internal pure returns (bool success, uint256 value) {
return _tryParseUintUncheckedBounds(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseUint-string-uint256-uint256} that returns false if the parsing fails because of an invalid
* character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseUint(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, uint256 value) {
if (end > bytes(input).length || begin > end) return (false, 0);
return _tryParseUintUncheckedBounds(input, begin, end);
}
/**
* @dev Implementation of {tryParseUint-string-uint256-uint256} that does not check bounds. Caller should make sure that
* `begin <= end <= input.length`. Other inputs would result in undefined behavior.
*/
function _tryParseUintUncheckedBounds(
string memory input,
uint256 begin,
uint256 end
) private pure returns (bool success, uint256 value) {
bytes memory buffer = bytes(input);
uint256 result = 0;
for (uint256 i = begin; i < end; ++i) {
uint8 chr = _tryParseChr(bytes1(_unsafeReadBytesOffset(buffer, i)));
if (chr > 9) return (false, 0);
result *= 10;
result += chr;
}
return (true, result);
}
/**
* @dev Parse a decimal string and returns the value as a `int256`.
*
* Requirements:
* - The string must be formatted as `[-+]?[0-9]*`
* - The result must fit in an `int256` type.
*/
function parseInt(string memory input) internal pure returns (int256) {
return parseInt(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseInt-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `[-+]?[0-9]*`
* - The result must fit in an `int256` type.
*/
function parseInt(string memory input, uint256 begin, uint256 end) internal pure returns (int256) {
(bool success, int256 value) = tryParseInt(input, begin, end);
if (!success) revert StringsInvalidChar();
return value;
}
/**
* @dev Variant of {parseInt-string} that returns false if the parsing fails because of an invalid character or if
* the result does not fit in a `int256`.
*
* NOTE: This function will revert if the absolute value of the result does not fit in a `uint256`.
*/
function tryParseInt(string memory input) internal pure returns (bool success, int256 value) {
return _tryParseIntUncheckedBounds(input, 0, bytes(input).length);
}
uint256 private constant ABS_MIN_INT256 = 2 ** 255;
/**
* @dev Variant of {parseInt-string-uint256-uint256} that returns false if the parsing fails because of an invalid
* character or if the result does not fit in a `int256`.
*
* NOTE: This function will revert if the absolute value of the result does not fit in a `uint256`.
*/
function tryParseInt(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, int256 value) {
if (end > bytes(input).length || begin > end) return (false, 0);
return _tryParseIntUncheckedBounds(input, begin, end);
}
/**
* @dev Implementation of {tryParseInt-string-uint256-uint256} that does not check bounds. Caller should make sure that
* `begin <= end <= input.length`. Other inputs would result in undefined behavior.
*/
function _tryParseIntUncheckedBounds(
string memory input,
uint256 begin,
uint256 end
) private pure returns (bool success, int256 value) {
bytes memory buffer = bytes(input);
// Check presence of a negative sign.
bytes1 sign = begin == end ? bytes1(0) : bytes1(_unsafeReadBytesOffset(buffer, begin)); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
bool positiveSign = sign == bytes1("+");
bool negativeSign = sign == bytes1("-");
uint256 offset = (positiveSign || negativeSign).toUint();
(bool absSuccess, uint256 absValue) = tryParseUint(input, begin + offset, end);
if (absSuccess && absValue < ABS_MIN_INT256) {
return (true, negativeSign ? -int256(absValue) : int256(absValue));
} else if (absSuccess && negativeSign && absValue == ABS_MIN_INT256) {
return (true, type(int256).min);
} else return (false, 0);
}
/**
* @dev Parse a hexadecimal string (with or without "0x" prefix), and returns the value as a `uint256`.
*
* Requirements:
* - The string must be formatted as `(0x)?[0-9a-fA-F]*`
* - The result must fit in an `uint256` type.
*/
function parseHexUint(string memory input) internal pure returns (uint256) {
return parseHexUint(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseHexUint-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `(0x)?[0-9a-fA-F]*`
* - The result must fit in an `uint256` type.
*/
function parseHexUint(string memory input, uint256 begin, uint256 end) internal pure returns (uint256) {
(bool success, uint256 value) = tryParseHexUint(input, begin, end);
if (!success) revert StringsInvalidChar();
return value;
}
/**
* @dev Variant of {parseHexUint-string} that returns false if the parsing fails because of an invalid character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseHexUint(string memory input) internal pure returns (bool success, uint256 value) {
return _tryParseHexUintUncheckedBounds(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseHexUint-string-uint256-uint256} that returns false if the parsing fails because of an
* invalid character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseHexUint(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, uint256 value) {
if (end > bytes(input).length || begin > end) return (false, 0);
return _tryParseHexUintUncheckedBounds(input, begin, end);
}
/**
* @dev Implementation of {tryParseHexUint-string-uint256-uint256} that does not check bounds. Caller should make sure that
* `begin <= end <= input.length`. Other inputs would result in undefined behavior.
*/
function _tryParseHexUintUncheckedBounds(
string memory input,
uint256 begin,
uint256 end
) private pure returns (bool success, uint256 value) {
bytes memory buffer = bytes(input);
// skip 0x prefix if present
bool hasPrefix = (end > begin + 1) && bytes2(_unsafeReadBytesOffset(buffer, begin)) == bytes2("0x"); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
uint256 offset = hasPrefix.toUint() * 2;
uint256 result = 0;
for (uint256 i = begin + offset; i < end; ++i) {
uint8 chr = _tryParseChr(bytes1(_unsafeReadBytesOffset(buffer, i)));
if (chr > 15) return (false, 0);
result *= 16;
unchecked {
// Multiplying by 16 is equivalent to a shift of 4 bits (with additional overflow check).
// This guarantees that adding a value < 16 will not cause an overflow, hence the unchecked.
result += chr;
}
}
return (true, result);
}
/**
* @dev Parse a hexadecimal string (with or without "0x" prefix), and returns the value as an `address`.
*
* Requirements:
* - The string must be formatted as `(0x)?[0-9a-fA-F]{40}`
*/
function parseAddress(string memory input) internal pure returns (address) {
return parseAddress(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseAddress-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `(0x)?[0-9a-fA-F]{40}`
*/
function parseAddress(string memory input, uint256 begin, uint256 end) internal pure returns (address) {
(bool success, address value) = tryParseAddress(input, begin, end);
if (!success) revert StringsInvalidAddressFormat();
return value;
}
/**
* @dev Variant of {parseAddress-string} that returns false if the parsing fails because the input is not a properly
* formatted address. See {parseAddress-string} requirements.
*/
function tryParseAddress(string memory input) internal pure returns (bool success, address value) {
return tryParseAddress(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseAddress-string-uint256-uint256} that returns false if the parsing fails because input is not a properly
* formatted address. See {parseAddress-string-uint256-uint256} requirements.
*/
function tryParseAddress(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, address value) {
if (end > bytes(input).length || begin > end) return (false, address(0));
bool hasPrefix = (end > begin + 1) && bytes2(_unsafeReadBytesOffset(bytes(input), begin)) == bytes2("0x"); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
uint256 expectedLength = 40 + hasPrefix.toUint() * 2;
// check that input is the correct length
if (end - begin == expectedLength) {
// length guarantees that this does not overflow, and value is at most type(uint160).max
(bool s, uint256 v) = _tryParseHexUintUncheckedBounds(input, begin, end);
return (s, address(uint160(v)));
} else {
return (false, address(0));
}
}
function _tryParseChr(bytes1 chr) private pure returns (uint8) {
uint8 value = uint8(chr);
// Try to parse `chr`:
// - Case 1: [0-9]
// - Case 2: [a-f]
// - Case 3: [A-F]
// - otherwise not supported
unchecked {
if (value > 47 && value < 58) value -= 48;
else if (value > 96 && value < 103) value -= 87;
else if (value > 64 && value < 71) value -= 55;
else return type(uint8).max;
}
return value;
}
/**
* @dev Escape special characters in JSON strings. This can be useful to prevent JSON injection in NFT metadata.
*
* WARNING: This function should only be used in double quoted JSON strings. Single quotes are not escaped.
*
* NOTE: This function escapes all unicode characters, and not just the ones in ranges defined in section 2.5 of
* RFC-4627 (U+0000 to U+001F, U+0022 and U+005C). ECMAScript's `JSON.parse` does recover escaped unicode
* characters that are not in this range, but other tooling may provide different results.
*/
function escapeJSON(string memory input) internal pure returns (string memory) {
bytes memory buffer = bytes(input);
bytes memory output = new bytes(2 * buffer.length); // worst case scenario
uint256 outputLength = 0;
for (uint256 i; i < buffer.length; ++i) {
bytes1 char = bytes1(_unsafeReadBytesOffset(buffer, i));
if (((SPECIAL_CHARS_LOOKUP & (1 << uint8(char))) != 0)) {
output[outputLength++] = "\\";
if (char == 0x08) output[outputLength++] = "b";
else if (char == 0x09) output[outputLength++] = "t";
else if (char == 0x0a) output[outputLength++] = "n";
else if (char == 0x0c) output[outputLength++] = "f";
else if (char == 0x0d) output[outputLength++] = "r";
else if (char == 0x5c) output[outputLength++] = "\\";
else if (char == 0x22) {
// solhint-disable-next-line quotes
output[outputLength++] = '"';
}
} else {
output[outputLength++] = char;
}
}
// write the actual length and deallocate unused memory
assembly ("memory-safe") {
mstore(output, outputLength)
mstore(0x40, add(output, shl(5, shr(5, add(outputLength, 63)))))
}
return string(output);
}
/**
* @dev Reads a bytes32 from a bytes array without bounds checking.
*
* NOTE: making this function internal would mean it could be used with memory unsafe offset, and marking the
* assembly block as such would prevent some optimizations.
*/
function _unsafeReadBytesOffset(bytes memory buffer, uint256 offset) private pure returns (bytes32 value) {
// This is not memory safe in the general case, but all calls to this private function are within bounds.
assembly ("memory-safe") {
value := mload(add(buffer, add(0x20, offset)))
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol)
pragma solidity ^0.8.20;
import {IERC165} from "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;
/**
* @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: GPL-3.0-or-later
pragma solidity >=0.8.22;
/// @notice This contract implements logic to batch call any function.
interface IBatch {
/// @notice Allows batched calls to self, i.e., `this` contract.
/// @dev Since `msg.value` can be reused across calls, be VERY CAREFUL when using it. Refer to
/// https://paradigm.xyz/2021/08/two-rights-might-make-a-wrong for more information.
/// @param calls An array of inputs for each call.
/// @return results An array of results from each call. Empty when the calls do not return anything.
function batch(bytes[] calldata calls) external payable returns (bytes[] memory results);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { ISablierComptroller } from "./ISablierComptroller.sol";
/// @title IComptrollerable
/// @notice Contract module that provides a setter and getter for the Sablier Comptroller.
interface IComptrollerable {
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when the comptroller address is set by the admin.
event SetComptroller(ISablierComptroller oldComptroller, ISablierComptroller newComptroller);
/// @notice Emitted when the fees are transferred to the comptroller contract.
event TransferFeesToComptroller(ISablierComptroller indexed comptroller, uint256 feeAmount);
/*//////////////////////////////////////////////////////////////////////////
READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Retrieves the address of the comptroller contract.
function comptroller() external view returns (ISablierComptroller);
/*//////////////////////////////////////////////////////////////////////////
STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Sets the comptroller to a new address.
/// @dev Emits a {SetComptroller} event.
///
/// Requirements:
/// - `msg.sender` must be the current comptroller.
/// - The new comptroller must return `true` from {supportsInterface} with the comptroller's minimal interface ID
/// which is defined as the XOR of the following function selectors:
/// 1. {calculateMinFeeWeiFor}
/// 2. {convertUSDFeeToWei}
/// 3. {execute}
/// 4. {getMinFeeUSDFor}
///
/// @param newComptroller The address of the new comptroller contract.
function setComptroller(ISablierComptroller newComptroller) external;
/// @notice Transfers the fees to the comptroller contract.
/// @dev Emits a {TransferFeesToComptroller} event.
function transferFeesToComptroller() external;
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
/// @title Errors
/// @notice Library with custom errors used across the contracts.
library Errors {
/*//////////////////////////////////////////////////////////////////////////
ADMINABLE
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when `msg.sender` is not the admin.
error CallerNotAdmin(address admin, address caller);
/*//////////////////////////////////////////////////////////////////////////
COMPTROLLER
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when the target contract reverts without any return data.
error SablierComptroller_ExecutionFailedSilently();
/// @notice Thrown when trying to set fee to a value that exceeds the maximum USD fee.
error SablierComptroller_MaxFeeUSDExceeded(uint256 newFeeUSD, uint256 maxFeeUSD);
/// @notice Thrown when an unauthorized address collects fee without setting the fee recipient to admin address.
error SablierComptroller_FeeRecipientNotAdmin(address feeRecipient, address admin);
/// @notice Thrown when trying to transfer fees to the zero address.
error SablierComptroller_FeeRecipientZero();
/// @notice Thrown if fee transfer fails.
error SablierComptroller_FeeTransferFailed(address feeRecipient, uint256 feeAmount);
/*//////////////////////////////////////////////////////////////////////////
COMPTROLLERABLE
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when `msg.sender` is not the comptroller.
error Comptrollerable_CallerNotComptroller(address comptroller, address caller);
/// @notice Thrown when the new comptroller does not support the minimal interface ID from the previous comptroller.
error Comptrollerable_UnsupportedInterfaceId(
address previousComptroller, address newComptroller, bytes4 minimalInterfaceId
);
/*//////////////////////////////////////////////////////////////////////////
NO-DELEGATE-CALL
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when trying to delegate call to a function that disallows delegate calls.
error DelegateCall();
/*//////////////////////////////////////////////////////////////////////////
ROLE-ADMINABLE
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when trying to grant role to an `account` that already has the `role`.
error AccountAlreadyHasRole(bytes32 role, address account);
/// @notice Thrown when trying to revoke role from an `account` that does not have the `role`.
error AccountDoesNotHaveRole(bytes32 role, address account);
/// @notice Thrown if `caller` is missing the `neededRole` and is not the admin.
error UnauthorizedAccess(address caller, bytes32 neededRole);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC1822.sol)
pragma solidity ^0.8.20;
/**
* @dev ERC-1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
* proxy whose upgrades are fully controlled by the current implementation.
*/
interface IERC1822Proxiable {
/**
* @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
* address.
*
* IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
* bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
* function revert if invoked through a proxy.
*/
function proxiableUUID() external view returns (bytes32);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IAdminable } from "./IAdminable.sol";
/// @title IRoleAdminable
/// @notice Contract module that provides role-based access control mechanisms, including an admin that can be granted
/// exclusive access to specific functions. The inheriting contract must set the initial admin in the constructor.
interface IRoleAdminable is IAdminable {
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when `account` is granted `role`.
/// @param admin The address of the admin that granted the role.
/// @param account The address of the account to which the role is granted.
/// @param role The identifier of the role.
event RoleGranted(address indexed admin, address indexed account, bytes32 indexed role);
/// @notice Emitted when `account` is revoked `role`.
/// @param admin The address of the admin that revoked the role.
/// @param account The address of the account from which the role is revoked.
/// @param role The identifier of the role.
event RoleRevoked(address indexed admin, address indexed account, bytes32 indexed role);
/*//////////////////////////////////////////////////////////////////////////
READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice A role with the authority to collect fees from the Sablier contracts.
function FEE_COLLECTOR_ROLE() external view returns (bytes32);
/// @notice A role with the authority to update fees across the Sablier contracts.
function FEE_MANAGEMENT_ROLE() external view returns (bytes32);
/// @notice Returns `true` if `account` has the `role` or is the admin.
function hasRoleOrIsAdmin(bytes32 role, address account) external view returns (bool);
/*//////////////////////////////////////////////////////////////////////////
STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Grants `role` to `account`. Reverts if `account` already has the role.
///
/// @dev Emits {RoleGranted} event.
///
/// Requirements:
/// - `msg.sender` must be the admin.
///
/// @param role The identifier of the role.
/// @param account The address of the account to which the role is granted.
function grantRole(bytes32 role, address account) external;
/// @notice Revokes `role` from `account`. Reverts if `account` does not have the role.
///
/// @dev Emits {RoleRevoked} event.
///
/// Requirements:
/// - `msg.sender` must be the admin.
///
/// @param role The identifier of the role.
/// @param account The address of the account from which the role is revoked.
function revokeRole(bytes32 role, address account) external;
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { Errors } from "./libraries/Errors.sol";
/// @title NoDelegateCall
/// @notice This contract implements logic to prevent delegate calls.
abstract contract NoDelegateCall {
/*//////////////////////////////////////////////////////////////////////////
STATE VARIABLES
//////////////////////////////////////////////////////////////////////////*/
/// @dev The address of the original contract that was deployed.
address private immutable ORIGINAL;
/*//////////////////////////////////////////////////////////////////////////
MODIFIERS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Prevents delegate calls.
modifier noDelegateCall() {
_preventDelegateCall();
_;
}
/*//////////////////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////////////////*/
/// @dev Sets the original contract address.
constructor() {
ORIGINAL = address(this);
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev This function checks whether the current call is a delegate call, and reverts if it is.
///
/// - A private function is used instead of inlining this logic in a modifier because Solidity copies modifiers into
/// every function that uses them. The `ORIGINAL` address would get copied in every place the modifier is used,
/// which would increase the contract size. By using a function instead, we can avoid this duplication of code
/// and reduce the overall size of the contract.
function _preventDelegateCall() private view {
if (address(this) != ORIGINAL) {
revert Errors.DelegateCall();
}
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { Lockup } from "../types/Lockup.sol";
import { LockupDynamic } from "../types/LockupDynamic.sol";
import { ISablierLockupState } from "./ISablierLockupState.sol";
/// @title ISablierLockupDynamic
/// @notice Creates Lockup streams with dynamic distribution model.
interface ISablierLockupDynamic is ISablierLockupState {
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when an LD stream is created.
/// @param streamId The ID of the newly created stream.
/// @param commonParams Common parameters emitted in Create events across all Lockup models.
/// @param segments The segments the protocol uses to compose the dynamic distribution function.
event CreateLockupDynamicStream(
uint256 indexed streamId, Lockup.CreateEventCommon commonParams, LockupDynamic.Segment[] segments
);
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Creates a stream by setting the start time to `block.timestamp`, and the end time to the sum of
/// `block.timestamp` and all specified time durations. The segment timestamps are derived from these
/// durations. The stream is funded by `msg.sender` and is wrapped in an ERC-721 NFT.
///
/// @dev Emits a {Transfer}, {CreateLockupDynamicStream} and {MetadataUpdate} event.
///
/// Requirements:
/// - All requirements in {createWithTimestampsLD} must be met for the calculated parameters.
///
/// @param params Struct encapsulating the function parameters, which are documented in {Lockup} type.
/// @param segmentsWithDuration Segments with durations used to compose the dynamic distribution function. Timestamps
/// are calculated by starting from `block.timestamp` and adding each duration to the previous timestamp.
/// @return streamId The ID of the newly created stream.
function createWithDurationsLD(
Lockup.CreateWithDurations calldata params,
LockupDynamic.SegmentWithDuration[] calldata segmentsWithDuration
)
external
payable
returns (uint256 streamId);
/// @notice Creates a stream with the provided segment timestamps, implying the end time from the last timestamp.
/// The stream is funded by `msg.sender` and is wrapped in an ERC-721 NFT.
///
/// @dev Emits a {Transfer}, {CreateLockupDynamicStream} and {MetadataUpdate} event.
///
/// Notes:
/// - As long as the segment timestamps are arranged in ascending order, it is not an error for some
/// of them to be in the past.
///
/// Requirements:
/// - Must not be delegate called.
/// - `params.depositAmount` must be greater than zero.
/// - `params.timestamps.start` must be greater than zero and less than the first segment's timestamp.
/// - `segments` must have at least one segment.
/// - The segment timestamps must be arranged in ascending order.
/// - `params.timestamps.end` must be equal to the last segment's timestamp.
/// - The sum of the segment amounts must equal the deposit amount.
/// - `params.recipient` must not be the zero address.
/// - `params.sender` must not be the zero address.
/// - `msg.sender` must have allowed this contract to spend at least `params.depositAmount` tokens.
/// - `params.token` must not be the native token.
/// - `params.shape.length` must not be greater than 32 characters.
///
/// @param params Struct encapsulating the function parameters, which are documented in {Lockup} type.
/// @param segments Segments used to compose the dynamic distribution function.
/// @return streamId The ID of the newly created stream.
function createWithTimestampsLD(
Lockup.CreateWithTimestamps calldata params,
LockupDynamic.Segment[] calldata segments
)
external
payable
returns (uint256 streamId);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.8.22;
import { Lockup } from "../types/Lockup.sol";
import { LockupDynamic } from "../types/LockupDynamic.sol";
import { LockupLinear } from "../types/LockupLinear.sol";
import { LockupTranched } from "../types/LockupTranched.sol";
import { Errors } from "./Errors.sol";
/// @title Helpers
/// @notice Library with functions needed to validate input parameters across Lockup streams.
library Helpers {
/*//////////////////////////////////////////////////////////////////////////
USER-FACING READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev Calculate the timestamps and return the segments.
function calculateSegmentTimestamps(
LockupDynamic.SegmentWithDuration[] memory segmentsWithDuration,
uint40 startTime
)
public
pure
returns (LockupDynamic.Segment[] memory segmentsWithTimestamps)
{
uint256 segmentCount = segmentsWithDuration.length;
segmentsWithTimestamps = new LockupDynamic.Segment[](segmentCount);
// It is safe to use unchecked arithmetic because {SablierLockup._createLD} will nonetheless
// check the correctness of the calculated segment timestamps.
unchecked {
// The first segment is precomputed because it is needed in the for loop below.
segmentsWithTimestamps[0] = LockupDynamic.Segment({
amount: segmentsWithDuration[0].amount,
exponent: segmentsWithDuration[0].exponent,
timestamp: startTime + segmentsWithDuration[0].duration
});
// Copy the segment amounts and exponents, and calculate the segment timestamps.
for (uint256 i = 1; i < segmentCount; ++i) {
segmentsWithTimestamps[i] = LockupDynamic.Segment({
amount: segmentsWithDuration[i].amount,
exponent: segmentsWithDuration[i].exponent,
timestamp: segmentsWithTimestamps[i - 1].timestamp + segmentsWithDuration[i].duration
});
}
}
}
/// @dev Calculate the timestamps and return the tranches.
function calculateTrancheTimestamps(
LockupTranched.TrancheWithDuration[] memory tranchesWithDuration,
uint40 startTime
)
public
pure
returns (LockupTranched.Tranche[] memory tranchesWithTimestamps)
{
uint256 trancheCount = tranchesWithDuration.length;
tranchesWithTimestamps = new LockupTranched.Tranche[](trancheCount);
// It is safe to use unchecked arithmetic because {SablierLockup-_createLT} will nonetheless check the
// correctness of the calculated tranche timestamps.
unchecked {
// The first tranche is precomputed because it is needed in the for loop below.
tranchesWithTimestamps[0] = LockupTranched.Tranche({
amount: tranchesWithDuration[0].amount,
timestamp: startTime + tranchesWithDuration[0].duration
});
// Copy the tranche amounts and calculate the tranche timestamps.
for (uint256 i = 1; i < trancheCount; ++i) {
tranchesWithTimestamps[i] = LockupTranched.Tranche({
amount: tranchesWithDuration[i].amount,
timestamp: tranchesWithTimestamps[i - 1].timestamp + tranchesWithDuration[i].duration
});
}
}
}
/// @dev Checks the parameters of the {SablierLockup-_createLD} function.
function checkCreateLD(
address sender,
Lockup.Timestamps memory timestamps,
uint128 depositAmount,
LockupDynamic.Segment[] memory segments,
address token,
address nativeToken,
string memory shape
)
public
pure
{
// Check: validate the user-provided common parameters.
_checkCreateStream(sender, depositAmount, timestamps.start, token, nativeToken, shape);
// Check: validate the user-provided segments.
_checkSegments(segments, depositAmount, timestamps);
}
/// @dev Checks the parameters of the {SablierLockup-_createLL} function.
function checkCreateLL(
address sender,
Lockup.Timestamps memory timestamps,
uint40 cliffTime,
uint128 depositAmount,
LockupLinear.UnlockAmounts memory unlockAmounts,
address token,
address nativeToken,
string memory shape
)
public
pure
{
// Check: validate the user-provided common parameters.
_checkCreateStream(sender, depositAmount, timestamps.start, token, nativeToken, shape);
// Check: validate the user-provided cliff and end times.
_checkTimestampsAndUnlockAmounts(depositAmount, timestamps, cliffTime, unlockAmounts);
}
/// @dev Checks the parameters of the {SablierLockup-_createLT} function.
function checkCreateLT(
address sender,
Lockup.Timestamps memory timestamps,
uint128 depositAmount,
LockupTranched.Tranche[] memory tranches,
address token,
address nativeToken,
string memory shape
)
public
pure
{
// Check: validate the user-provided common parameters.
_checkCreateStream(sender, depositAmount, timestamps.start, token, nativeToken, shape);
// Check: validate the user-provided segments.
_checkTranches(tranches, depositAmount, timestamps);
}
/*//////////////////////////////////////////////////////////////////////////
PRIVATE READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @dev Checks the user-provided cliff, end times, and unlock amounts of an LL stream.
function _checkTimestampsAndUnlockAmounts(
uint128 depositAmount,
Lockup.Timestamps memory timestamps,
uint40 cliffTime,
LockupLinear.UnlockAmounts memory unlockAmounts
)
private
pure
{
// Since a cliff time of zero means there is no cliff, the following checks are performed only if it's not zero.
if (cliffTime > 0) {
// Check: the start time is strictly less than the cliff time.
if (timestamps.start >= cliffTime) {
revert Errors.SablierHelpers_StartTimeNotLessThanCliffTime(timestamps.start, cliffTime);
}
// Check: the cliff time is strictly less than the end time.
if (cliffTime >= timestamps.end) {
revert Errors.SablierHelpers_CliffTimeNotLessThanEndTime(cliffTime, timestamps.end);
}
}
// Check: the cliff unlock amount is zero when the cliff time is zero.
else if (unlockAmounts.cliff > 0) {
revert Errors.SablierHelpers_CliffTimeZeroUnlockAmountNotZero(unlockAmounts.cliff);
}
// Check: the start time is strictly less than the end time.
if (timestamps.start >= timestamps.end) {
revert Errors.SablierHelpers_StartTimeNotLessThanEndTime(timestamps.start, timestamps.end);
}
// Check: the sum of the start and cliff unlock amounts is not greater than the deposit amount.
if (unlockAmounts.start + unlockAmounts.cliff > depositAmount) {
revert Errors.SablierHelpers_UnlockAmountsSumTooHigh(
depositAmount, unlockAmounts.start, unlockAmounts.cliff
);
}
}
/// @dev Checks the user-provided common parameters across Lockup streams.
function _checkCreateStream(
address sender,
uint128 depositAmount,
uint40 startTime,
address token,
address nativeToken,
string memory shape
)
private
pure
{
// Check: the sender is not the zero address.
if (sender == address(0)) {
revert Errors.SablierHelpers_SenderZeroAddress();
}
// Check: the deposit amount is not zero.
if (depositAmount == 0) {
revert Errors.SablierHelpers_DepositAmountZero();
}
// Check: the start time is not zero.
if (startTime == 0) {
revert Errors.SablierHelpers_StartTimeZero();
}
// Check: the token is not the native token.
if (token == nativeToken) {
revert Errors.SablierHelpers_CreateNativeToken(nativeToken);
}
// Check: the shape is not greater than 32 bytes.
if (bytes(shape).length > 32) {
revert Errors.SablierHelpers_ShapeExceeds32Bytes(bytes(shape).length);
}
}
/// @dev Checks:
///
/// 1. The first timestamp is strictly greater than the start time.
/// 2. The timestamps are ordered chronologically.
/// 3. There are no duplicate timestamps.
/// 4. The deposit amount is equal to the sum of all segment amounts.
/// 5. The end time equals the last segment's timestamp.
function _checkSegments(
LockupDynamic.Segment[] memory segments,
uint128 depositAmount,
Lockup.Timestamps memory timestamps
)
private
pure
{
// Check: the segment count is not zero.
uint256 segmentCount = segments.length;
if (segmentCount == 0) {
revert Errors.SablierHelpers_SegmentCountZero();
}
// Check: the start time is strictly less than the first segment timestamp.
if (timestamps.start >= segments[0].timestamp) {
revert Errors.SablierHelpers_StartTimeNotLessThanFirstSegmentTimestamp(
timestamps.start, segments[0].timestamp
);
}
// Check: the end time equals the last segment's timestamp.
if (timestamps.end != segments[segmentCount - 1].timestamp) {
revert Errors.SablierHelpers_EndTimeNotEqualToLastSegmentTimestamp(
timestamps.end, segments[segmentCount - 1].timestamp
);
}
// Pre-declare the variables needed in the for loop.
uint128 segmentAmountsSum;
uint40 currentSegmentTimestamp;
uint40 previousSegmentTimestamp;
// Iterate over the segments to:
//
// 1. Calculate the sum of all segment amounts.
// 2. Check that the timestamps are ordered.
for (uint256 index = 0; index < segmentCount; ++index) {
// Add the current segment amount to the sum.
segmentAmountsSum += segments[index].amount;
// Check: the current timestamp is strictly greater than the previous timestamp.
currentSegmentTimestamp = segments[index].timestamp;
if (currentSegmentTimestamp <= previousSegmentTimestamp) {
revert Errors.SablierHelpers_SegmentTimestampsNotOrdered(
index, previousSegmentTimestamp, currentSegmentTimestamp
);
}
// Make the current timestamp the previous timestamp of the next loop iteration.
previousSegmentTimestamp = currentSegmentTimestamp;
}
// Check: the deposit amount is equal to the segment amounts sum.
if (depositAmount != segmentAmountsSum) {
revert Errors.SablierHelpers_DepositAmountNotEqualToSegmentAmountsSum(depositAmount, segmentAmountsSum);
}
}
/// @dev Checks:
///
/// 1. The first timestamp is strictly greater than the start time.
/// 2. The timestamps are ordered chronologically.
/// 3. There are no duplicate timestamps.
/// 4. The deposit amount is equal to the sum of all tranche amounts.
/// 5. The end time equals the last tranche's timestamp.
function _checkTranches(
LockupTranched.Tranche[] memory tranches,
uint128 depositAmount,
Lockup.Timestamps memory timestamps
)
private
pure
{
// Check: the tranche count is not zero.
uint256 trancheCount = tranches.length;
if (trancheCount == 0) {
revert Errors.SablierHelpers_TrancheCountZero();
}
// Check: the start time is strictly less than the first tranche timestamp.
if (timestamps.start >= tranches[0].timestamp) {
revert Errors.SablierHelpers_StartTimeNotLessThanFirstTrancheTimestamp(
timestamps.start, tranches[0].timestamp
);
}
// Check: the end time equals the tranche's timestamp.
if (timestamps.end != tranches[trancheCount - 1].timestamp) {
revert Errors.SablierHelpers_EndTimeNotEqualToLastTrancheTimestamp(
timestamps.end, tranches[trancheCount - 1].timestamp
);
}
// Pre-declare the variables needed in the for loop.
uint128 trancheAmountsSum;
uint40 currentTrancheTimestamp;
uint40 previousTrancheTimestamp;
// Iterate over the tranches to:
//
// 1. Calculate the sum of all tranche amounts.
// 2. Check that the timestamps are ordered.
for (uint256 index = 0; index < trancheCount; ++index) {
// Add the current tranche amount to the sum.
trancheAmountsSum += tranches[index].amount;
// Check: the current timestamp is strictly greater than the previous timestamp.
currentTrancheTimestamp = tranches[index].timestamp;
if (currentTrancheTimestamp <= previousTrancheTimestamp) {
revert Errors.SablierHelpers_TrancheTimestampsNotOrdered(
index, previousTrancheTimestamp, currentTrancheTimestamp
);
}
// Make the current timestamp the previous timestamp of the next loop iteration.
previousTrancheTimestamp = currentTrancheTimestamp;
}
// Check: the deposit amount is equal to the tranche amounts sum.
if (depositAmount != trancheAmountsSum) {
revert Errors.SablierHelpers_DepositAmountNotEqualToTrancheAmountsSum(depositAmount, trancheAmountsSum);
}
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { UD2x18 } from "@prb/math/src/UD2x18.sol";
/// @notice Namespace for the structs used only in LD streams.
library LockupDynamic {
/// @notice Segment struct stored to represent LD streams.
/// @param amount The amount of tokens streamed in the segment, denoted in units of the token's decimals.
/// @param exponent The exponent of the segment, denoted as a fixed-point number.
/// @param timestamp The Unix timestamp indicating the segment's end.
struct Segment {
// slot 0
uint128 amount;
UD2x18 exponent;
uint40 timestamp;
}
/// @notice Segment struct used at runtime in {SablierLockupDynamic.createWithDurationsLD} function.
/// @param amount The amount of tokens streamed in the segment, denoted in units of the token's decimals.
/// @param exponent The exponent of the segment, denoted as a fixed-point number.
/// @param duration The time difference in seconds between the segment and the previous one.
struct SegmentWithDuration {
uint128 amount;
UD2x18 exponent;
uint40 duration;
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { Lockup } from "../types/Lockup.sol";
import { LockupLinear } from "../types/LockupLinear.sol";
import { ISablierLockupState } from "./ISablierLockupState.sol";
/// @title ISablierLockupLinear
/// @notice Creates Lockup streams with linear distribution model.
interface ISablierLockupLinear is ISablierLockupState {
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when an LL stream is created.
/// @param streamId The ID of the newly created stream.
/// @param commonParams Common parameters emitted in Create events across all Lockup models.
/// @param cliffTime The Unix timestamp for the cliff period's end. A value of zero means there is no cliff.
/// @param unlockAmounts Struct encapsulating (i) the amount to unlock at the start time and (ii) the amount to
/// unlock at the cliff time.
event CreateLockupLinearStream(
uint256 indexed streamId,
Lockup.CreateEventCommon commonParams,
uint40 cliffTime,
LockupLinear.UnlockAmounts unlockAmounts
);
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Creates a stream by setting the start time to `block.timestamp`, and the end time to
/// the sum of `block.timestamp` and `durations.total`. The stream is funded by `msg.sender` and is wrapped in an
/// ERC-721 NFT.
///
/// @dev Emits a {Transfer}, {CreateLockupLinearStream} and {MetadataUpdate} event.
///
/// Requirements:
/// - All requirements in {createWithTimestampsLL} must be met for the calculated parameters.
///
/// @param params Struct encapsulating the function parameters, which are documented in {Lockup} type.
/// @param durations Struct encapsulating (i) cliff period duration and (ii) total stream duration, both in seconds.
/// @param unlockAmounts Struct encapsulating (i) the amount to unlock at the start time and (ii) the amount to
/// unlock at the cliff time.
/// @return streamId The ID of the newly created stream.
function createWithDurationsLL(
Lockup.CreateWithDurations calldata params,
LockupLinear.UnlockAmounts calldata unlockAmounts,
LockupLinear.Durations calldata durations
)
external
payable
returns (uint256 streamId);
/// @notice Creates a stream with the provided start time and end time. The stream is funded by `msg.sender` and is
/// wrapped in an ERC-721 NFT.
///
/// @dev Emits a {Transfer}, {CreateLockupLinearStream} and {MetadataUpdate} event.
///
/// Notes:
/// - A cliff time of zero means there is no cliff.
/// - As long as the times are ordered, it is not an error for the start or the cliff time to be in the past.
///
/// Requirements:
/// - Must not be delegate called.
/// - `params.depositAmount` must be greater than zero.
/// - `params.timestamps.start` must be greater than zero and less than `params.timestamps.end`.
/// - If set, `cliffTime` must be greater than `params.timestamps.start` and less than
/// `params.timestamps.end`.
/// - `params.recipient` must not be the zero address.
/// - `params.sender` must not be the zero address.
/// - The sum of `params.unlockAmounts.start` and `params.unlockAmounts.cliff` must be less than or equal to
/// deposit amount.
/// - If `params.timestamps.cliff` not set, the `params.unlockAmounts.cliff` must be zero.
/// - `msg.sender` must have allowed this contract to spend at least `params.depositAmount` tokens.
/// - `params.token` must not be the native token.
/// - `params.shape.length` must not be greater than 32 characters.
///
/// @param params Struct encapsulating the function parameters, which are documented in {Lockup} type.
/// @param cliffTime The Unix timestamp for the cliff period's end. A value of zero means there is no cliff.
/// @param unlockAmounts Struct encapsulating (i) the amount to unlock at the start time and (ii) the amount to
/// unlock at the cliff time.
/// @return streamId The ID of the newly created stream.
function createWithTimestampsLL(
Lockup.CreateWithTimestamps calldata params,
LockupLinear.UnlockAmounts calldata unlockAmounts,
uint40 cliffTime
)
external
payable
returns (uint256 streamId);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
/// @notice Namespace for the structs used only in LL streams.
library LockupLinear {
/// @notice Struct encapsulating the cliff duration and the total duration used at runtime in
/// {SablierLockupLinear.createWithDurationsLL} function.
/// @param cliff The cliff duration in seconds.
/// @param total The total duration in seconds.
struct Durations {
uint40 cliff;
uint40 total;
}
/// @notice Struct encapsulating the unlock amounts for the stream.
/// @dev The sum of `start` and `cliff` must be less than or equal to deposit amount. Both amounts can be zero.
/// @param start The amount to be unlocked at the start time.
/// @param cliff The amount to be unlocked at the cliff time.
struct UnlockAmounts {
// slot 0
uint128 start;
uint128 cliff;
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { Lockup } from "../types/Lockup.sol";
import { LockupDynamic } from "../types/LockupDynamic.sol";
import { LockupLinear } from "../types/LockupLinear.sol";
import { LockupTranched } from "../types/LockupTranched.sol";
import { ILockupNFTDescriptor } from "./ILockupNFTDescriptor.sol";
/// @title ISablierLockupState
/// @notice Contract with state variables (storage and constants) for the {SablierLockup} contract, their respective
/// getters and helpful modifiers.
interface ISablierLockupState {
/*//////////////////////////////////////////////////////////////////////////
USER-FACING READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Retrieves the aggregate amount across all streams, denoted in units of the token's decimals.
/// @dev If tokens are directly transferred to the contract without using the stream creation functions, the
/// ERC-20 balance may be greater than the aggregate amount.
/// @param token The ERC-20 token for the query.
function aggregateAmount(IERC20 token) external view returns (uint256);
/// @notice Retrieves the stream's cliff time, which is a Unix timestamp. A value of zero means there is no cliff.
/// @dev Reverts if `streamId` references either a null stream or a non-LL stream.
/// @param streamId The stream ID for the query.
function getCliffTime(uint256 streamId) external view returns (uint40 cliffTime);
/// @notice Retrieves the amount deposited in the stream, denoted in units of the token's decimals.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getDepositedAmount(uint256 streamId) external view returns (uint128 depositedAmount);
/// @notice Retrieves the stream's end time, which is a Unix timestamp.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getEndTime(uint256 streamId) external view returns (uint40 endTime);
/// @notice Retrieves the distribution models used to create the stream.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getLockupModel(uint256 streamId) external view returns (Lockup.Model lockupModel);
/// @notice Retrieves the amount refunded to the sender after a cancellation, denoted in units of the token's
/// decimals. This amount is always zero unless the stream was canceled.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getRefundedAmount(uint256 streamId) external view returns (uint128 refundedAmount);
/// @notice Retrieves the segments used to compose the dynamic distribution function.
/// @dev Reverts if `streamId` references either a null stream or a non-LD stream.
/// @param streamId The stream ID for the query.
/// @return segments See the documentation in {LockupDynamic} type.
function getSegments(uint256 streamId) external view returns (LockupDynamic.Segment[] memory segments);
/// @notice Retrieves the stream's sender.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getSender(uint256 streamId) external view returns (address sender);
/// @notice Retrieves the stream's start time, which is a Unix timestamp.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getStartTime(uint256 streamId) external view returns (uint40 startTime);
/// @notice Retrieves the tranches used to compose the tranched distribution function.
/// @dev Reverts if `streamId` references either a null stream or a non-LT stream.
/// @param streamId The stream ID for the query.
/// @return tranches See the documentation in {LockupTranched} type.
function getTranches(uint256 streamId) external view returns (LockupTranched.Tranche[] memory tranches);
/// @notice Retrieves the address of the underlying ERC-20 token being distributed.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getUnderlyingToken(uint256 streamId) external view returns (IERC20 token);
/// @notice Retrieves the unlock amounts used to compose the linear distribution function.
/// @dev Reverts if `streamId` references either a null stream or a non-LL stream.
/// @param streamId The stream ID for the query.
/// @return unlockAmounts See the documentation in {LockupLinear} type.
function getUnlockAmounts(uint256 streamId)
external
view
returns (LockupLinear.UnlockAmounts memory unlockAmounts);
/// @notice Retrieves the amount withdrawn from the stream, denoted in units of the token's decimals.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function getWithdrawnAmount(uint256 streamId) external view returns (uint128 withdrawnAmount);
/// @notice Retrieves a flag indicating whether the provided address is a contract allowed to hook to Sablier
/// when a stream is canceled or when tokens are withdrawn.
/// @dev See {ISablierLockupRecipient} for more information.
function isAllowedToHook(address recipient) external view returns (bool result);
/// @notice Retrieves a flag indicating whether the stream can be canceled. When the stream is cold, this
/// flag is always `false`.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function isCancelable(uint256 streamId) external view returns (bool result);
/// @notice Retrieves a flag indicating whether the stream is depleted.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function isDepleted(uint256 streamId) external view returns (bool result);
/// @notice Retrieves a flag indicating whether the stream exists.
/// @dev Does not revert if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function isStream(uint256 streamId) external view returns (bool result);
/// @notice Retrieves a flag indicating whether the stream NFT can be transferred.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function isTransferable(uint256 streamId) external view returns (bool result);
/// @notice Retrieves the address of the ERC-20 interface of the native token, if it exists.
/// @dev The native tokens on some chains have a dual interface as ERC-20. For example, on Polygon the $POL token
/// is the native token and has an ERC-20 version at 0x0000000000000000000000000000000000001010. This means
/// that `address(this).balance` returns the same value as `balanceOf(address(this))`. To avoid any unintended
/// behavior, these tokens cannot be used in Sablier. As an alternative, users can use the Wrapped version of the
/// token, i.e. WMATIC, which is a standard ERC-20 token.
function nativeToken() external view returns (address);
/// @notice Counter for stream IDs, used in the create functions.
function nextStreamId() external view returns (uint256);
/// @notice Contract that generates the non-fungible token URI.
function nftDescriptor() external view returns (ILockupNFTDescriptor);
/// @notice Retrieves a flag indicating whether the stream was canceled.
/// @dev Reverts if `streamId` references a null stream.
/// @param streamId The stream ID for the query.
function wasCanceled(uint256 streamId) external view returns (bool result);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
/// @notice Namespace for the structs used only in LT streams.
library LockupTranched {
/// @notice Tranche struct stored to represent LT streams.
/// @param amount The amount of tokens to be unlocked in the tranche, denoted in units of the token's decimals.
/// @param timestamp The Unix timestamp indicating the tranche's end.
struct Tranche {
// slot 0
uint128 amount;
uint40 timestamp;
}
/// @notice Tranche struct used at runtime in {SablierLockupTranched.createWithDurationsLT} function.
/// @param amount The amount of tokens to be unlocked in the tranche, denoted in units of the token's decimals.
/// @param duration The time difference in seconds between the tranche and the previous one.
struct TrancheWithDuration {
uint128 amount;
uint40 duration;
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
import { Lockup } from "../types/Lockup.sol";
import { LockupTranched } from "../types/LockupTranched.sol";
import { ISablierLockupState } from "./ISablierLockupState.sol";
/// @title ISablierLockupTranched
/// @notice Creates Lockup streams with tranched distribution model.
interface ISablierLockupTranched is ISablierLockupState {
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when an LT stream is created.
/// @param streamId The ID of the newly created stream.
/// @param commonParams Common parameters emitted in Create events across all Lockup models.
/// @param tranches The tranches the protocol uses to compose the tranched distribution function.
event CreateLockupTranchedStream(
uint256 indexed streamId, Lockup.CreateEventCommon commonParams, LockupTranched.Tranche[] tranches
);
/*//////////////////////////////////////////////////////////////////////////
USER-FACING STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Creates a stream by setting the start time to `block.timestamp`, and the end time to the sum of
/// `block.timestamp` and all specified time durations. The tranche timestamps are derived from these
/// durations. The stream is funded by `msg.sender` and is wrapped in an ERC-721 NFT.
///
/// @dev Emits a {Transfer}, {CreateLockupTrancheStream} and {MetadataUpdate} event.
///
/// Requirements:
/// - All requirements in {createWithTimestampsLT} must be met for the calculated parameters.
///
/// @param params Struct encapsulating the function parameters, which are documented in {Lockup} type.
/// @param tranchesWithDuration Tranches with durations used to compose the tranched distribution function.
/// Timestamps are calculated by starting from `block.timestamp` and adding each duration to the previous timestamp.
/// @return streamId The ID of the newly created stream.
function createWithDurationsLT(
Lockup.CreateWithDurations calldata params,
LockupTranched.TrancheWithDuration[] calldata tranchesWithDuration
)
external
payable
returns (uint256 streamId);
/// @notice Creates a stream with the provided tranche timestamps, implying the end time from the last timestamp.
/// The stream is funded by `msg.sender` and is wrapped in an ERC-721 NFT.
///
/// @dev Emits a {Transfer}, {CreateLockupTrancheStream} and {MetadataUpdate} event.
///
/// Notes:
/// - As long as the tranche timestamps are arranged in ascending order, it is not an error for some
/// of them to be in the past.
///
/// Requirements:
/// - Must not be delegate called.
/// - `params.depositAmount` must be greater than zero.
/// - `params.timestamps.start` must be greater than zero and less than the first tranche's timestamp.
/// - `tranches` must have at least one tranche.
/// - The tranche timestamps must be arranged in ascending order.
/// - `params.timestamps.end` must be equal to the last tranche's timestamp.
/// - The sum of the tranche amounts must equal the deposit amount.
/// - `params.recipient` must not be the zero address.
/// - `params.sender` must not be the zero address.
/// - `msg.sender` must have allowed this contract to spend at least `params.depositAmount` tokens.
/// - `params.token` must not be the native token.
/// - `params.shape.length` must not be greater than 32 characters.
///
/// @param params Struct encapsulating the function parameters, which are documented in {Lockup} type.
/// @param tranches Tranches used to compose the tranched distribution function.
/// @return streamId The ID of the newly created stream.
function createWithTimestampsLT(
Lockup.CreateWithTimestamps calldata params,
LockupTranched.Tranche[] calldata tranches
)
external
payable
returns (uint256 streamId);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { uMAX_SD1x18 } from "../sd1x18/Constants.sol";
import { SD1x18 } from "../sd1x18/ValueType.sol";
import { uMAX_SD21x18 } from "../sd21x18/Constants.sol";
import { SD21x18 } from "../sd21x18/ValueType.sol";
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { uMAX_UD2x18 } from "../ud2x18/Constants.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { UD21x18 } from "../ud21x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
/// @notice Thrown when trying to cast a uint128 that doesn't fit in SD1x18.
error PRBMath_IntoSD1x18_Overflow(uint128 x);
/// @notice Thrown when trying to cast a uint128 that doesn't fit in SD21x18.
error PRBMath_IntoSD21x18_Overflow(uint128 x);
/// @notice Thrown when trying to cast a uint128 that doesn't fit in UD2x18.
error PRBMath_IntoUD2x18_Overflow(uint128 x);
/// @title PRBMathCastingUint128
/// @notice Casting utilities for uint128.
library PRBMathCastingUint128 {
/// @notice Casts a uint128 number to SD1x18.
/// @dev Requirements:
/// - x ≤ uMAX_SD1x18
function intoSD1x18(uint128 x) internal pure returns (SD1x18 result) {
if (x > uint256(int256(uMAX_SD1x18))) {
revert PRBMath_IntoSD1x18_Overflow(x);
}
result = SD1x18.wrap(int64(uint64(x)));
}
/// @notice Casts a uint128 number to SD21x18.
/// @dev Requirements:
/// - x ≤ uMAX_SD21x18
function intoSD21x18(uint128 x) internal pure returns (SD21x18 result) {
if (x > uint256(int256(uMAX_SD21x18))) {
revert PRBMath_IntoSD21x18_Overflow(x);
}
result = SD21x18.wrap(int128(x));
}
/// @notice Casts a uint128 number to SD59x18.
/// @dev There is no overflow check because uint128 ⊆ SD59x18.
function intoSD59x18(uint128 x) internal pure returns (SD59x18 result) {
result = SD59x18.wrap(int256(uint256(x)));
}
/// @notice Casts a uint128 number to UD2x18.
/// @dev Requirements:
/// - x ≤ uMAX_UD2x18
function intoUD2x18(uint128 x) internal pure returns (UD2x18 result) {
if (x > uint64(uMAX_UD2x18)) {
revert PRBMath_IntoUD2x18_Overflow(x);
}
result = UD2x18.wrap(uint64(x));
}
/// @notice Casts a uint128 number to UD21x18.
function intoUD21x18(uint128 x) internal pure returns (UD21x18 result) {
result = UD21x18.wrap(x);
}
/// @notice Casts a uint128 number to UD60x18.
/// @dev There is no overflow check because uint128 ⊆ UD60x18.
function intoUD60x18(uint128 x) internal pure returns (UD60x18 result) {
result = UD60x18.wrap(x);
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { SD1x18 } from "../sd1x18/ValueType.sol";
import { SD21x18 } from "../sd21x18/ValueType.sol";
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { UD21x18 } from "../ud21x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
/// @title PRBMathCastingUint40
/// @notice Casting utilities for uint40.
library PRBMathCastingUint40 {
/// @notice Casts a uint40 number into SD1x18.
/// @dev There is no overflow check because uint40 ⊆ SD1x18.
function intoSD1x18(uint40 x) internal pure returns (SD1x18 result) {
result = SD1x18.wrap(int64(uint64(x)));
}
/// @notice Casts a uint40 number into SD21x18.
/// @dev There is no overflow check because uint40 ⊆ SD21x18.
function intoSD21x18(uint40 x) internal pure returns (SD21x18 result) {
result = SD21x18.wrap(int128(uint128(x)));
}
/// @notice Casts a uint40 number into SD59x18.
/// @dev There is no overflow check because uint40 ⊆ SD59x18.
function intoSD59x18(uint40 x) internal pure returns (SD59x18 result) {
result = SD59x18.wrap(int256(uint256(x)));
}
/// @notice Casts a uint40 number into UD2x18.
/// @dev There is no overflow check because uint40 ⊆ UD2x18.
function intoUD2x18(uint40 x) internal pure returns (UD2x18 result) {
result = UD2x18.wrap(x);
}
/// @notice Casts a uint40 number into UD21x18.
/// @dev There is no overflow check because uint40 ⊆ UD21x18.
function intoUD21x18(uint40 x) internal pure returns (UD21x18 result) {
result = UD21x18.wrap((x));
}
/// @notice Casts a uint40 number into UD60x18.
/// @dev There is no overflow check because uint40 ⊆ UD60x18.
function intoUD60x18(uint40 x) internal pure returns (UD60x18 result) {
result = UD60x18.wrap(x);
}
}// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; /* ██████╗ ██████╗ ██████╗ ███╗ ███╗ █████╗ ████████╗██╗ ██╗ ██╔══██╗██╔══██╗██╔══██╗████╗ ████║██╔══██╗╚══██╔══╝██║ ██║ ██████╔╝██████╔╝██████╔╝██╔████╔██║███████║ ██║ ███████║ ██╔═══╝ ██╔══██╗██╔══██╗██║╚██╔╝██║██╔══██║ ██║ ██╔══██║ ██║ ██║ ██║██████╔╝██║ ╚═╝ ██║██║ ██║ ██║ ██║ ██║ ╚═╝ ╚═╝ ╚═╝╚═════╝ ╚═╝ ╚═╝╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ███████╗██████╗ ███████╗ █████╗ ██╗ ██╗ ██╗ █████╗ ██╔════╝██╔══██╗██╔════╝██╔══██╗╚██╗██╔╝███║██╔══██╗ ███████╗██║ ██║███████╗╚██████║ ╚███╔╝ ╚██║╚█████╔╝ ╚════██║██║ ██║╚════██║ ╚═══██║ ██╔██╗ ██║██╔══██╗ ███████║██████╔╝███████║ █████╔╝██╔╝ ██╗ ██║╚█████╔╝ ╚══════╝╚═════╝ ╚══════╝ ╚════╝ ╚═╝ ╚═╝ ╚═╝ ╚════╝ */ import "./sd59x18/Casting.sol"; import "./sd59x18/Constants.sol"; import "./sd59x18/Conversions.sol"; import "./sd59x18/Errors.sol"; import "./sd59x18/Helpers.sol"; import "./sd59x18/Math.sol"; import "./sd59x18/ValueType.sol";
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; /* ██████╗ ██████╗ ██████╗ ███╗ ███╗ █████╗ ████████╗██╗ ██╗ ██╔══██╗██╔══██╗██╔══██╗████╗ ████║██╔══██╗╚══██╔══╝██║ ██║ ██████╔╝██████╔╝██████╔╝██╔████╔██║███████║ ██║ ███████║ ██╔═══╝ ██╔══██╗██╔══██╗██║╚██╔╝██║██╔══██║ ██║ ██╔══██║ ██║ ██║ ██║██████╔╝██║ ╚═╝ ██║██║ ██║ ██║ ██║ ██║ ╚═╝ ╚═╝ ╚═╝╚═════╝ ╚═╝ ╚═╝╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ██╗ ██╗██████╗ ██████╗ ██████╗ ██╗ ██╗ ██╗ █████╗ ██║ ██║██╔══██╗██╔════╝ ██╔═████╗╚██╗██╔╝███║██╔══██╗ ██║ ██║██║ ██║███████╗ ██║██╔██║ ╚███╔╝ ╚██║╚█████╔╝ ██║ ██║██║ ██║██╔═══██╗████╔╝██║ ██╔██╗ ██║██╔══██╗ ╚██████╔╝██████╔╝╚██████╔╝╚██████╔╝██╔╝ ██╗ ██║╚█████╔╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚════╝ */ import "./ud60x18/Casting.sol"; import "./ud60x18/Constants.sol"; import "./ud60x18/Conversions.sol"; import "./ud60x18/Errors.sol"; import "./ud60x18/Helpers.sol"; import "./ud60x18/Math.sol"; import "./ud60x18/ValueType.sol";
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../token/ERC20/IERC20.sol";// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.20;
/**
* @title ERC-721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC-721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be
* reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}// 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 v5.1.0) (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/math/SignedMath.sol)
pragma solidity ^0.8.20;
import {SafeCast} from "./SafeCast.sol";
/**
* @dev Standard signed math utilities missing in the Solidity language.
*/
library SignedMath {
/**
* @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, int256 a, int256 b) internal pure returns (int256) {
unchecked {
// branchless ternary works because:
// b ^ (a ^ b) == a
// b ^ 0 == b
return b ^ ((a ^ b) * int256(SafeCast.toUint(condition)));
}
}
/**
* @dev Returns the largest of two signed numbers.
*/
function max(int256 a, int256 b) internal pure returns (int256) {
return ternary(a > b, a, b);
}
/**
* @dev Returns the smallest of two signed numbers.
*/
function min(int256 a, int256 b) internal pure returns (int256) {
return ternary(a < b, a, b);
}
/**
* @dev Returns the average of two signed numbers without overflow.
* The result is rounded towards zero.
*/
function average(int256 a, int256 b) internal pure returns (int256) {
// Formula from the book "Hacker's Delight"
int256 x = (a & b) + ((a ^ b) >> 1);
return x + (int256(uint256(x) >> 255) & (a ^ b));
}
/**
* @dev Returns the absolute unsigned value of a signed value.
*/
function abs(int256 n) internal pure returns (uint256) {
unchecked {
// Formula from the "Bit Twiddling Hacks" by Sean Eron Anderson.
// Since `n` is a signed integer, the generated bytecode will use the SAR opcode to perform the right shift,
// taking advantage of the most significant (or "sign" bit) in two's complement representation.
// This opcode adds new most significant bits set to the value of the previous most significant bit. As a result,
// the mask will either be `bytes32(0)` (if n is positive) or `~bytes32(0)` (if n is negative).
int256 mask = n >> 255;
// A `bytes32(0)` mask leaves the input unchanged, while a `~bytes32(0)` mask complements it.
return uint256((n + mask) ^ mask);
}
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.22;
/// @title IAdminable
/// @notice Contract module that provides a basic access control mechanism, with an admin that can be
/// granted exclusive access to specific functions. The inheriting contract must set the initial admin
/// in the constructor.
interface IAdminable {
/*//////////////////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Emitted when the admin is transferred.
/// @param oldAdmin The address of the old admin.
/// @param newAdmin The address of the new admin.
event TransferAdmin(address indexed oldAdmin, address indexed newAdmin);
/*//////////////////////////////////////////////////////////////////////////
READ-ONLY FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice The address of the admin account or contract.
function admin() external view returns (address);
/*//////////////////////////////////////////////////////////////////////////
STATE-CHANGING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Transfers the contract admin to a new address.
///
/// @dev Notes:
/// - Does not revert if the admin is the same.
/// - This function can potentially leave the contract without an admin, thereby removing any
/// functionality that is only available to the admin.
///
/// Requirements:
/// - `msg.sender` must be the contract admin.
///
/// @param newAdmin The address of the new admin.
function transferAdmin(address newAdmin) external;
}// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; /* ██████╗ ██████╗ ██████╗ ███╗ ███╗ █████╗ ████████╗██╗ ██╗ ██╔══██╗██╔══██╗██╔══██╗████╗ ████║██╔══██╗╚══██╔══╝██║ ██║ ██████╔╝██████╔╝██████╔╝██╔████╔██║███████║ ██║ ███████║ ██╔═══╝ ██╔══██╗██╔══██╗██║╚██╔╝██║██╔══██║ ██║ ██╔══██║ ██║ ██║ ██║██████╔╝██║ ╚═╝ ██║██║ ██║ ██║ ██║ ██║ ╚═╝ ╚═╝ ╚═╝╚═════╝ ╚═╝ ╚═╝╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ██╗ ██╗██████╗ ██████╗ ██╗ ██╗ ██╗ █████╗ ██║ ██║██╔══██╗╚════██╗╚██╗██╔╝███║██╔══██╗ ██║ ██║██║ ██║ █████╔╝ ╚███╔╝ ╚██║╚█████╔╝ ██║ ██║██║ ██║██╔═══╝ ██╔██╗ ██║██╔══██╗ ╚██████╔╝██████╔╝███████╗██╔╝ ██╗ ██║╚█████╔╝ ╚═════╝ ╚═════╝ ╚══════╝╚═╝ ╚═╝ ╚═╝ ╚════╝ */ import "./ud2x18/Casting.sol"; import "./ud2x18/Constants.sol"; import "./ud2x18/Errors.sol"; import "./ud2x18/ValueType.sol";
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { SD1x18 } from "./ValueType.sol";
/// @dev Euler's number as an SD1x18 number.
SD1x18 constant E = SD1x18.wrap(2_718281828459045235);
/// @dev The maximum value an SD1x18 number can have.
int64 constant uMAX_SD1x18 = 9_223372036854775807;
SD1x18 constant MAX_SD1x18 = SD1x18.wrap(uMAX_SD1x18);
/// @dev The minimum value an SD1x18 number can have.
int64 constant uMIN_SD1x18 = -9_223372036854775808;
SD1x18 constant MIN_SD1x18 = SD1x18.wrap(uMIN_SD1x18);
/// @dev PI as an SD1x18 number.
SD1x18 constant PI = SD1x18.wrap(3_141592653589793238);
/// @dev The unit number, which gives the decimal precision of SD1x18.
SD1x18 constant UNIT = SD1x18.wrap(1e18);
int64 constant uUNIT = 1e18;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Casting.sol" as Casting;
/// @notice The signed 1.18-decimal fixed-point number representation, which can have up to 1 digit and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type int64. This is useful when end users want to use int64 to save gas, e.g. with tight variable packing in contract
/// storage.
type SD1x18 is int64;
/*//////////////////////////////////////////////////////////////////////////
CASTING
//////////////////////////////////////////////////////////////////////////*/
using {
Casting.intoSD59x18,
Casting.intoUD60x18,
Casting.intoUint128,
Casting.intoUint256,
Casting.intoUint40,
Casting.unwrap
} for SD1x18 global;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { SD21x18 } from "./ValueType.sol";
/// @dev Euler's number as an SD21x18 number.
SD21x18 constant E = SD21x18.wrap(2_718281828459045235);
/// @dev The maximum value an SD21x18 number can have.
int128 constant uMAX_SD21x18 = 170141183460469231731_687303715884105727;
SD21x18 constant MAX_SD21x18 = SD21x18.wrap(uMAX_SD21x18);
/// @dev The minimum value an SD21x18 number can have.
int128 constant uMIN_SD21x18 = -170141183460469231731_687303715884105728;
SD21x18 constant MIN_SD21x18 = SD21x18.wrap(uMIN_SD21x18);
/// @dev PI as an SD21x18 number.
SD21x18 constant PI = SD21x18.wrap(3_141592653589793238);
/// @dev The unit number, which gives the decimal precision of SD21x18.
SD21x18 constant UNIT = SD21x18.wrap(1e18);
int128 constant uUNIT = 1e18;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Casting.sol" as Casting;
/// @notice The signed 21.18-decimal fixed-point number representation, which can have up to 21 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type int128. This is useful when end users want to use int128 to save gas, e.g. with tight variable packing in contract
/// storage.
type SD21x18 is int128;
/*//////////////////////////////////////////////////////////////////////////
CASTING
//////////////////////////////////////////////////////////////////////////*/
using {
Casting.intoSD59x18,
Casting.intoUD60x18,
Casting.intoUint128,
Casting.intoUint256,
Casting.intoUint40,
Casting.unwrap
} for SD21x18 global;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Casting.sol" as Casting;
import "./Helpers.sol" as Helpers;
import "./Math.sol" as Math;
/// @notice The signed 59.18-decimal fixed-point number representation, which can have up to 59 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type int256.
type SD59x18 is int256;
/*//////////////////////////////////////////////////////////////////////////
CASTING
//////////////////////////////////////////////////////////////////////////*/
using {
Casting.intoInt256,
Casting.intoSD1x18,
Casting.intoSD21x18,
Casting.intoUD2x18,
Casting.intoUD21x18,
Casting.intoUD60x18,
Casting.intoUint256,
Casting.intoUint128,
Casting.intoUint40,
Casting.unwrap
} for SD59x18 global;
/*//////////////////////////////////////////////////////////////////////////
MATHEMATICAL FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
using {
Math.abs,
Math.avg,
Math.ceil,
Math.div,
Math.exp,
Math.exp2,
Math.floor,
Math.frac,
Math.gm,
Math.inv,
Math.log10,
Math.log2,
Math.ln,
Math.mul,
Math.pow,
Math.powu,
Math.sqrt
} for SD59x18 global;
/*//////////////////////////////////////////////////////////////////////////
HELPER FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
using {
Helpers.add,
Helpers.and,
Helpers.eq,
Helpers.gt,
Helpers.gte,
Helpers.isZero,
Helpers.lshift,
Helpers.lt,
Helpers.lte,
Helpers.mod,
Helpers.neq,
Helpers.not,
Helpers.or,
Helpers.rshift,
Helpers.sub,
Helpers.uncheckedAdd,
Helpers.uncheckedSub,
Helpers.uncheckedUnary,
Helpers.xor
} for SD59x18 global;
/*//////////////////////////////////////////////////////////////////////////
OPERATORS
//////////////////////////////////////////////////////////////////////////*/
// The global "using for" directive makes it possible to use these operators on the SD59x18 type.
using {
Helpers.add as +,
Helpers.and2 as &,
Math.div as /,
Helpers.eq as ==,
Helpers.gt as >,
Helpers.gte as >=,
Helpers.lt as <,
Helpers.lte as <=,
Helpers.mod as %,
Math.mul as *,
Helpers.neq as !=,
Helpers.not as ~,
Helpers.or as |,
Helpers.sub as -,
Helpers.unary as -,
Helpers.xor as ^
} for SD59x18 global;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { UD2x18 } from "./ValueType.sol";
/// @dev Euler's number as a UD2x18 number.
UD2x18 constant E = UD2x18.wrap(2_718281828459045235);
/// @dev The maximum value a UD2x18 number can have.
uint64 constant uMAX_UD2x18 = 18_446744073709551615;
UD2x18 constant MAX_UD2x18 = UD2x18.wrap(uMAX_UD2x18);
/// @dev PI as a UD2x18 number.
UD2x18 constant PI = UD2x18.wrap(3_141592653589793238);
/// @dev The unit number, which gives the decimal precision of UD2x18.
UD2x18 constant UNIT = UD2x18.wrap(1e18);
uint64 constant uUNIT = 1e18;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Casting.sol" as Casting;
/// @notice The unsigned 2.18-decimal fixed-point number representation, which can have up to 2 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type uint64. This is useful when end users want to use uint64 to save gas, e.g. with tight variable packing in contract
/// storage.
type UD2x18 is uint64;
/*//////////////////////////////////////////////////////////////////////////
CASTING
//////////////////////////////////////////////////////////////////////////*/
using {
Casting.intoSD59x18,
Casting.intoUD60x18,
Casting.intoUint128,
Casting.intoUint256,
Casting.intoUint40,
Casting.unwrap
} for UD2x18 global;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Casting.sol" as Casting;
/// @notice The unsigned 21.18-decimal fixed-point number representation, which can have up to 21 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type uint128. This is useful when end users want to use uint128 to save gas, e.g. with tight variable packing in contract
/// storage.
type UD21x18 is uint128;
/*//////////////////////////////////////////////////////////////////////////
CASTING
//////////////////////////////////////////////////////////////////////////*/
using {
Casting.intoSD59x18,
Casting.intoUD60x18,
Casting.intoUint128,
Casting.intoUint256,
Casting.intoUint40,
Casting.unwrap
} for UD21x18 global;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Casting.sol" as Casting;
import "./Helpers.sol" as Helpers;
import "./Math.sol" as Math;
/// @notice The unsigned 60.18-decimal fixed-point number representation, which can have up to 60 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the Solidity type uint256.
/// @dev The value type is defined here so it can be imported in all other files.
type UD60x18 is uint256;
/*//////////////////////////////////////////////////////////////////////////
CASTING
//////////////////////////////////////////////////////////////////////////*/
using {
Casting.intoSD1x18,
Casting.intoSD21x18,
Casting.intoSD59x18,
Casting.intoUD2x18,
Casting.intoUD21x18,
Casting.intoUint128,
Casting.intoUint256,
Casting.intoUint40,
Casting.unwrap
} for UD60x18 global;
/*//////////////////////////////////////////////////////////////////////////
MATHEMATICAL FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
// The global "using for" directive makes the functions in this library callable on the UD60x18 type.
using {
Math.avg,
Math.ceil,
Math.div,
Math.exp,
Math.exp2,
Math.floor,
Math.frac,
Math.gm,
Math.inv,
Math.ln,
Math.log10,
Math.log2,
Math.mul,
Math.pow,
Math.powu,
Math.sqrt
} for UD60x18 global;
/*//////////////////////////////////////////////////////////////////////////
HELPER FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
// The global "using for" directive makes the functions in this library callable on the UD60x18 type.
using {
Helpers.add,
Helpers.and,
Helpers.eq,
Helpers.gt,
Helpers.gte,
Helpers.isZero,
Helpers.lshift,
Helpers.lt,
Helpers.lte,
Helpers.mod,
Helpers.neq,
Helpers.not,
Helpers.or,
Helpers.rshift,
Helpers.sub,
Helpers.uncheckedAdd,
Helpers.uncheckedSub,
Helpers.xor
} for UD60x18 global;
/*//////////////////////////////////////////////////////////////////////////
OPERATORS
//////////////////////////////////////////////////////////////////////////*/
// The global "using for" directive makes it possible to use these operators on the UD60x18 type.
using {
Helpers.add as +,
Helpers.and2 as &,
Math.div as /,
Helpers.eq as ==,
Helpers.gt as >,
Helpers.gte as >=,
Helpers.lt as <,
Helpers.lte as <=,
Helpers.or as |,
Helpers.mod as %,
Math.mul as *,
Helpers.neq as !=,
Helpers.not as ~,
Helpers.sub as -,
Helpers.xor as ^
} for UD60x18 global;// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Errors.sol" as CastingErrors;
import { MAX_UINT128, MAX_UINT40 } from "../Common.sol";
import { uMAX_SD1x18, uMIN_SD1x18 } from "../sd1x18/Constants.sol";
import { SD1x18 } from "../sd1x18/ValueType.sol";
import { uMAX_SD21x18, uMIN_SD21x18 } from "../sd21x18/Constants.sol";
import { SD21x18 } from "../sd21x18/ValueType.sol";
import { uMAX_UD2x18 } from "../ud2x18/Constants.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { uMAX_UD21x18 } from "../ud21x18/Constants.sol";
import { UD21x18 } from "../ud21x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { SD59x18 } from "./ValueType.sol";
/// @notice Casts an SD59x18 number into int256.
/// @dev This is basically a functional alias for {unwrap}.
function intoInt256(SD59x18 x) pure returns (int256 result) {
result = SD59x18.unwrap(x);
}
/// @notice Casts an SD59x18 number into SD1x18.
/// @dev Requirements:
/// - x ≥ uMIN_SD1x18
/// - x ≤ uMAX_SD1x18
function intoSD1x18(SD59x18 x) pure returns (SD1x18 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < uMIN_SD1x18) {
revert CastingErrors.PRBMath_SD59x18_IntoSD1x18_Underflow(x);
}
if (xInt > uMAX_SD1x18) {
revert CastingErrors.PRBMath_SD59x18_IntoSD1x18_Overflow(x);
}
result = SD1x18.wrap(int64(xInt));
}
/// @notice Casts an SD59x18 number into SD21x18.
/// @dev Requirements:
/// - x ≥ uMIN_SD21x18
/// - x ≤ uMAX_SD21x18
function intoSD21x18(SD59x18 x) pure returns (SD21x18 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < uMIN_SD21x18) {
revert CastingErrors.PRBMath_SD59x18_IntoSD21x18_Underflow(x);
}
if (xInt > uMAX_SD21x18) {
revert CastingErrors.PRBMath_SD59x18_IntoSD21x18_Overflow(x);
}
result = SD21x18.wrap(int128(xInt));
}
/// @notice Casts an SD59x18 number into UD2x18.
/// @dev Requirements:
/// - x ≥ 0
/// - x ≤ uMAX_UD2x18
function intoUD2x18(SD59x18 x) pure returns (UD2x18 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD59x18_IntoUD2x18_Underflow(x);
}
if (xInt > int256(uint256(uMAX_UD2x18))) {
revert CastingErrors.PRBMath_SD59x18_IntoUD2x18_Overflow(x);
}
result = UD2x18.wrap(uint64(uint256(xInt)));
}
/// @notice Casts an SD59x18 number into UD21x18.
/// @dev Requirements:
/// - x ≥ 0
/// - x ≤ uMAX_UD21x18
function intoUD21x18(SD59x18 x) pure returns (UD21x18 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD59x18_IntoUD21x18_Underflow(x);
}
if (xInt > int256(uint256(uMAX_UD21x18))) {
revert CastingErrors.PRBMath_SD59x18_IntoUD21x18_Overflow(x);
}
result = UD21x18.wrap(uint128(uint256(xInt)));
}
/// @notice Casts an SD59x18 number into UD60x18.
/// @dev Requirements:
/// - x ≥ 0
function intoUD60x18(SD59x18 x) pure returns (UD60x18 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD59x18_IntoUD60x18_Underflow(x);
}
result = UD60x18.wrap(uint256(xInt));
}
/// @notice Casts an SD59x18 number into uint256.
/// @dev Requirements:
/// - x ≥ 0
function intoUint256(SD59x18 x) pure returns (uint256 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD59x18_IntoUint256_Underflow(x);
}
result = uint256(xInt);
}
/// @notice Casts an SD59x18 number into uint128.
/// @dev Requirements:
/// - x ≥ 0
/// - x ≤ uMAX_UINT128
function intoUint128(SD59x18 x) pure returns (uint128 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD59x18_IntoUint128_Underflow(x);
}
if (xInt > int256(uint256(MAX_UINT128))) {
revert CastingErrors.PRBMath_SD59x18_IntoUint128_Overflow(x);
}
result = uint128(uint256(xInt));
}
/// @notice Casts an SD59x18 number into uint40.
/// @dev Requirements:
/// - x ≥ 0
/// - x ≤ MAX_UINT40
function intoUint40(SD59x18 x) pure returns (uint40 result) {
int256 xInt = SD59x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD59x18_IntoUint40_Underflow(x);
}
if (xInt > int256(uint256(MAX_UINT40))) {
revert CastingErrors.PRBMath_SD59x18_IntoUint40_Overflow(x);
}
result = uint40(uint256(xInt));
}
/// @notice Alias for {wrap}.
function sd(int256 x) pure returns (SD59x18 result) {
result = SD59x18.wrap(x);
}
/// @notice Alias for {wrap}.
function sd59x18(int256 x) pure returns (SD59x18 result) {
result = SD59x18.wrap(x);
}
/// @notice Unwraps an SD59x18 number into int256.
function unwrap(SD59x18 x) pure returns (int256 result) {
result = SD59x18.unwrap(x);
}
/// @notice Wraps an int256 number into SD59x18.
function wrap(int256 x) pure returns (SD59x18 result) {
result = SD59x18.wrap(x);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { SD59x18 } from "./ValueType.sol";
// NOTICE: the "u" prefix stands for "unwrapped".
/// @dev Euler's number as an SD59x18 number.
SD59x18 constant E = SD59x18.wrap(2_718281828459045235);
/// @dev The maximum input permitted in {exp}.
int256 constant uEXP_MAX_INPUT = 133_084258667509499440;
SD59x18 constant EXP_MAX_INPUT = SD59x18.wrap(uEXP_MAX_INPUT);
/// @dev Any value less than this returns 0 in {exp}.
int256 constant uEXP_MIN_THRESHOLD = -41_446531673892822322;
SD59x18 constant EXP_MIN_THRESHOLD = SD59x18.wrap(uEXP_MIN_THRESHOLD);
/// @dev The maximum input permitted in {exp2}.
int256 constant uEXP2_MAX_INPUT = 192e18 - 1;
SD59x18 constant EXP2_MAX_INPUT = SD59x18.wrap(uEXP2_MAX_INPUT);
/// @dev Any value less than this returns 0 in {exp2}.
int256 constant uEXP2_MIN_THRESHOLD = -59_794705707972522261;
SD59x18 constant EXP2_MIN_THRESHOLD = SD59x18.wrap(uEXP2_MIN_THRESHOLD);
/// @dev Half the UNIT number.
int256 constant uHALF_UNIT = 0.5e18;
SD59x18 constant HALF_UNIT = SD59x18.wrap(uHALF_UNIT);
/// @dev $log_2(10)$ as an SD59x18 number.
int256 constant uLOG2_10 = 3_321928094887362347;
SD59x18 constant LOG2_10 = SD59x18.wrap(uLOG2_10);
/// @dev $log_2(e)$ as an SD59x18 number.
int256 constant uLOG2_E = 1_442695040888963407;
SD59x18 constant LOG2_E = SD59x18.wrap(uLOG2_E);
/// @dev The maximum value an SD59x18 number can have.
int256 constant uMAX_SD59x18 = 57896044618658097711785492504343953926634992332820282019728_792003956564819967;
SD59x18 constant MAX_SD59x18 = SD59x18.wrap(uMAX_SD59x18);
/// @dev The maximum whole value an SD59x18 number can have.
int256 constant uMAX_WHOLE_SD59x18 = 57896044618658097711785492504343953926634992332820282019728_000000000000000000;
SD59x18 constant MAX_WHOLE_SD59x18 = SD59x18.wrap(uMAX_WHOLE_SD59x18);
/// @dev The minimum value an SD59x18 number can have.
int256 constant uMIN_SD59x18 = -57896044618658097711785492504343953926634992332820282019728_792003956564819968;
SD59x18 constant MIN_SD59x18 = SD59x18.wrap(uMIN_SD59x18);
/// @dev The minimum whole value an SD59x18 number can have.
int256 constant uMIN_WHOLE_SD59x18 = -57896044618658097711785492504343953926634992332820282019728_000000000000000000;
SD59x18 constant MIN_WHOLE_SD59x18 = SD59x18.wrap(uMIN_WHOLE_SD59x18);
/// @dev PI as an SD59x18 number.
SD59x18 constant PI = SD59x18.wrap(3_141592653589793238);
/// @dev The unit number, which gives the decimal precision of SD59x18.
int256 constant uUNIT = 1e18;
SD59x18 constant UNIT = SD59x18.wrap(1e18);
/// @dev The unit number squared.
int256 constant uUNIT_SQUARED = 1e36;
SD59x18 constant UNIT_SQUARED = SD59x18.wrap(uUNIT_SQUARED);
/// @dev Zero as an SD59x18 number.
SD59x18 constant ZERO = SD59x18.wrap(0);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { uMAX_SD59x18, uMIN_SD59x18, uUNIT } from "./Constants.sol";
import { PRBMath_SD59x18_Convert_Overflow, PRBMath_SD59x18_Convert_Underflow } from "./Errors.sol";
import { SD59x18 } from "./ValueType.sol";
/// @notice Converts a simple integer to SD59x18 by multiplying it by `UNIT`.
///
/// @dev Requirements:
/// - x ≥ `MIN_SD59x18 / UNIT`
/// - x ≤ `MAX_SD59x18 / UNIT`
///
/// @param x The basic integer to convert.
/// @return result The same number converted to SD59x18.
function convert(int256 x) pure returns (SD59x18 result) {
if (x < uMIN_SD59x18 / uUNIT) {
revert PRBMath_SD59x18_Convert_Underflow(x);
}
if (x > uMAX_SD59x18 / uUNIT) {
revert PRBMath_SD59x18_Convert_Overflow(x);
}
unchecked {
result = SD59x18.wrap(x * uUNIT);
}
}
/// @notice Converts an SD59x18 number to a simple integer by dividing it by `UNIT`.
/// @dev The result is rounded toward zero.
/// @param x The SD59x18 number to convert.
/// @return result The same number as a simple integer.
function convert(SD59x18 x) pure returns (int256 result) {
result = SD59x18.unwrap(x) / uUNIT;
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { SD59x18 } from "./ValueType.sol";
/// @notice Thrown when taking the absolute value of `MIN_SD59x18`.
error PRBMath_SD59x18_Abs_MinSD59x18();
/// @notice Thrown when ceiling a number overflows SD59x18.
error PRBMath_SD59x18_Ceil_Overflow(SD59x18 x);
/// @notice Thrown when converting a basic integer to the fixed-point format overflows SD59x18.
error PRBMath_SD59x18_Convert_Overflow(int256 x);
/// @notice Thrown when converting a basic integer to the fixed-point format underflows SD59x18.
error PRBMath_SD59x18_Convert_Underflow(int256 x);
/// @notice Thrown when dividing two numbers and one of them is `MIN_SD59x18`.
error PRBMath_SD59x18_Div_InputTooSmall();
/// @notice Thrown when dividing two numbers and one of the intermediary unsigned results overflows SD59x18.
error PRBMath_SD59x18_Div_Overflow(SD59x18 x, SD59x18 y);
/// @notice Thrown when taking the natural exponent of a base greater than 133_084258667509499441.
error PRBMath_SD59x18_Exp_InputTooBig(SD59x18 x);
/// @notice Thrown when taking the binary exponent of a base greater than 192e18.
error PRBMath_SD59x18_Exp2_InputTooBig(SD59x18 x);
/// @notice Thrown when flooring a number underflows SD59x18.
error PRBMath_SD59x18_Floor_Underflow(SD59x18 x);
/// @notice Thrown when taking the geometric mean of two numbers and their product is negative.
error PRBMath_SD59x18_Gm_NegativeProduct(SD59x18 x, SD59x18 y);
/// @notice Thrown when taking the geometric mean of two numbers and multiplying them overflows SD59x18.
error PRBMath_SD59x18_Gm_Overflow(SD59x18 x, SD59x18 y);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in SD1x18.
error PRBMath_SD59x18_IntoSD1x18_Overflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in SD1x18.
error PRBMath_SD59x18_IntoSD1x18_Underflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in SD21x18.
error PRBMath_SD59x18_IntoSD21x18_Overflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in SD21x18.
error PRBMath_SD59x18_IntoSD21x18_Underflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in UD2x18.
error PRBMath_SD59x18_IntoUD2x18_Overflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in UD2x18.
error PRBMath_SD59x18_IntoUD2x18_Underflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in UD21x18.
error PRBMath_SD59x18_IntoUD21x18_Overflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in UD21x18.
error PRBMath_SD59x18_IntoUD21x18_Underflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in UD60x18.
error PRBMath_SD59x18_IntoUD60x18_Underflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in uint128.
error PRBMath_SD59x18_IntoUint128_Overflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in uint128.
error PRBMath_SD59x18_IntoUint128_Underflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in uint256.
error PRBMath_SD59x18_IntoUint256_Underflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in uint40.
error PRBMath_SD59x18_IntoUint40_Overflow(SD59x18 x);
/// @notice Thrown when trying to cast an SD59x18 number that doesn't fit in uint40.
error PRBMath_SD59x18_IntoUint40_Underflow(SD59x18 x);
/// @notice Thrown when taking the logarithm of a number less than or equal to zero.
error PRBMath_SD59x18_Log_InputTooSmall(SD59x18 x);
/// @notice Thrown when multiplying two numbers and one of the inputs is `MIN_SD59x18`.
error PRBMath_SD59x18_Mul_InputTooSmall();
/// @notice Thrown when multiplying two numbers and the intermediary absolute result overflows SD59x18.
error PRBMath_SD59x18_Mul_Overflow(SD59x18 x, SD59x18 y);
/// @notice Thrown when raising a number to a power and the intermediary absolute result overflows SD59x18.
error PRBMath_SD59x18_Powu_Overflow(SD59x18 x, uint256 y);
/// @notice Thrown when taking the square root of a negative number.
error PRBMath_SD59x18_Sqrt_NegativeInput(SD59x18 x);
/// @notice Thrown when the calculating the square root overflows SD59x18.
error PRBMath_SD59x18_Sqrt_Overflow(SD59x18 x);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { wrap } from "./Casting.sol";
import { SD59x18 } from "./ValueType.sol";
/// @notice Implements the checked addition operation (+) in the SD59x18 type.
function add(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
return wrap(x.unwrap() + y.unwrap());
}
/// @notice Implements the AND (&) bitwise operation in the SD59x18 type.
function and(SD59x18 x, int256 bits) pure returns (SD59x18 result) {
return wrap(x.unwrap() & bits);
}
/// @notice Implements the AND (&) bitwise operation in the SD59x18 type.
function and2(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
return wrap(x.unwrap() & y.unwrap());
}
/// @notice Implements the equal (=) operation in the SD59x18 type.
function eq(SD59x18 x, SD59x18 y) pure returns (bool result) {
result = x.unwrap() == y.unwrap();
}
/// @notice Implements the greater than operation (>) in the SD59x18 type.
function gt(SD59x18 x, SD59x18 y) pure returns (bool result) {
result = x.unwrap() > y.unwrap();
}
/// @notice Implements the greater than or equal to operation (>=) in the SD59x18 type.
function gte(SD59x18 x, SD59x18 y) pure returns (bool result) {
result = x.unwrap() >= y.unwrap();
}
/// @notice Implements a zero comparison check function in the SD59x18 type.
function isZero(SD59x18 x) pure returns (bool result) {
result = x.unwrap() == 0;
}
/// @notice Implements the left shift operation (<<) in the SD59x18 type.
function lshift(SD59x18 x, uint256 bits) pure returns (SD59x18 result) {
result = wrap(x.unwrap() << bits);
}
/// @notice Implements the lower than operation (<) in the SD59x18 type.
function lt(SD59x18 x, SD59x18 y) pure returns (bool result) {
result = x.unwrap() < y.unwrap();
}
/// @notice Implements the lower than or equal to operation (<=) in the SD59x18 type.
function lte(SD59x18 x, SD59x18 y) pure returns (bool result) {
result = x.unwrap() <= y.unwrap();
}
/// @notice Implements the unchecked modulo operation (%) in the SD59x18 type.
function mod(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
result = wrap(x.unwrap() % y.unwrap());
}
/// @notice Implements the not equal operation (!=) in the SD59x18 type.
function neq(SD59x18 x, SD59x18 y) pure returns (bool result) {
result = x.unwrap() != y.unwrap();
}
/// @notice Implements the NOT (~) bitwise operation in the SD59x18 type.
function not(SD59x18 x) pure returns (SD59x18 result) {
result = wrap(~x.unwrap());
}
/// @notice Implements the OR (|) bitwise operation in the SD59x18 type.
function or(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
result = wrap(x.unwrap() | y.unwrap());
}
/// @notice Implements the right shift operation (>>) in the SD59x18 type.
function rshift(SD59x18 x, uint256 bits) pure returns (SD59x18 result) {
result = wrap(x.unwrap() >> bits);
}
/// @notice Implements the checked subtraction operation (-) in the SD59x18 type.
function sub(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
result = wrap(x.unwrap() - y.unwrap());
}
/// @notice Implements the checked unary minus operation (-) in the SD59x18 type.
function unary(SD59x18 x) pure returns (SD59x18 result) {
result = wrap(-x.unwrap());
}
/// @notice Implements the unchecked addition operation (+) in the SD59x18 type.
function uncheckedAdd(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
unchecked {
result = wrap(x.unwrap() + y.unwrap());
}
}
/// @notice Implements the unchecked subtraction operation (-) in the SD59x18 type.
function uncheckedSub(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
unchecked {
result = wrap(x.unwrap() - y.unwrap());
}
}
/// @notice Implements the unchecked unary minus operation (-) in the SD59x18 type.
function uncheckedUnary(SD59x18 x) pure returns (SD59x18 result) {
unchecked {
result = wrap(-x.unwrap());
}
}
/// @notice Implements the XOR (^) bitwise operation in the SD59x18 type.
function xor(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
result = wrap(x.unwrap() ^ y.unwrap());
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "../Common.sol" as Common;
import "./Errors.sol" as Errors;
import {
uEXP_MAX_INPUT,
uEXP2_MAX_INPUT,
uEXP_MIN_THRESHOLD,
uEXP2_MIN_THRESHOLD,
uHALF_UNIT,
uLOG2_10,
uLOG2_E,
uMAX_SD59x18,
uMAX_WHOLE_SD59x18,
uMIN_SD59x18,
uMIN_WHOLE_SD59x18,
UNIT,
uUNIT,
uUNIT_SQUARED,
ZERO
} from "./Constants.sol";
import { wrap } from "./Helpers.sol";
import { SD59x18 } from "./ValueType.sol";
/// @notice Calculates the absolute value of x.
///
/// @dev Requirements:
/// - x > MIN_SD59x18.
///
/// @param x The SD59x18 number for which to calculate the absolute value.
/// @return result The absolute value of x as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function abs(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
if (xInt == uMIN_SD59x18) {
revert Errors.PRBMath_SD59x18_Abs_MinSD59x18();
}
result = xInt < 0 ? wrap(-xInt) : x;
}
/// @notice Calculates the arithmetic average of x and y.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// @param x The first operand as an SD59x18 number.
/// @param y The second operand as an SD59x18 number.
/// @return result The arithmetic average as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function avg(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
int256 yInt = y.unwrap();
unchecked {
// This operation is equivalent to `x / 2 + y / 2`, and it can never overflow.
int256 sum = (xInt >> 1) + (yInt >> 1);
if (sum < 0) {
// If at least one of x and y is odd, add 1 to the result, because shifting negative numbers to the right
// rounds toward negative infinity. The right part is equivalent to `sum + (x % 2 == 1 || y % 2 == 1)`.
assembly ("memory-safe") {
result := add(sum, and(or(xInt, yInt), 1))
}
} else {
// Add 1 if both x and y are odd to account for the double 0.5 remainder truncated after shifting.
result = wrap(sum + (xInt & yInt & 1));
}
}
}
/// @notice Yields the smallest whole number greater than or equal to x.
///
/// @dev Optimized for fractional value inputs, because every whole value has (1e18 - 1) fractional counterparts.
/// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
///
/// Requirements:
/// - x ≤ MAX_WHOLE_SD59x18
///
/// @param x The SD59x18 number to ceil.
/// @return result The smallest whole number greater than or equal to x, as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function ceil(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
if (xInt > uMAX_WHOLE_SD59x18) {
revert Errors.PRBMath_SD59x18_Ceil_Overflow(x);
}
int256 remainder = xInt % uUNIT;
if (remainder == 0) {
result = x;
} else {
unchecked {
// Solidity uses C fmod style, which returns a modulus with the same sign as x.
int256 resultInt = xInt - remainder;
if (xInt > 0) {
resultInt += uUNIT;
}
result = wrap(resultInt);
}
}
}
/// @notice Divides two SD59x18 numbers, returning a new SD59x18 number.
///
/// @dev This is an extension of {Common.mulDiv} for signed numbers, which works by computing the signs and the absolute
/// values separately.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv}.
/// - The result is rounded toward zero.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv}.
/// - None of the inputs can be `MIN_SD59x18`.
/// - The denominator must not be zero.
/// - The result must fit in SD59x18.
///
/// @param x The numerator as an SD59x18 number.
/// @param y The denominator as an SD59x18 number.
/// @return result The quotient as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function div(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
int256 yInt = y.unwrap();
if (xInt == uMIN_SD59x18 || yInt == uMIN_SD59x18) {
revert Errors.PRBMath_SD59x18_Div_InputTooSmall();
}
// Get hold of the absolute values of x and y.
uint256 xAbs;
uint256 yAbs;
unchecked {
xAbs = xInt < 0 ? uint256(-xInt) : uint256(xInt);
yAbs = yInt < 0 ? uint256(-yInt) : uint256(yInt);
}
// Compute the absolute value (x*UNIT÷y). The resulting value must fit in SD59x18.
uint256 resultAbs = Common.mulDiv(xAbs, uint256(uUNIT), yAbs);
if (resultAbs > uint256(uMAX_SD59x18)) {
revert Errors.PRBMath_SD59x18_Div_Overflow(x, y);
}
// Check if x and y have the same sign using two's complement representation. The left-most bit represents the sign (1 for
// negative, 0 for positive or zero).
bool sameSign = (xInt ^ yInt) > -1;
// If the inputs have the same sign, the result should be positive. Otherwise, it should be negative.
unchecked {
result = wrap(sameSign ? int256(resultAbs) : -int256(resultAbs));
}
}
/// @notice Calculates the natural exponent of x using the following formula:
///
/// $$
/// e^x = 2^{x * log_2{e}}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {exp2}.
///
/// Requirements:
/// - Refer to the requirements in {exp2}.
/// - x < 133_084258667509499441.
///
/// @param x The exponent as an SD59x18 number.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
// Any input less than the threshold returns zero.
// This check also prevents an overflow for very small numbers.
if (xInt < uEXP_MIN_THRESHOLD) {
return ZERO;
}
// This check prevents values greater than 192e18 from being passed to {exp2}.
if (xInt > uEXP_MAX_INPUT) {
revert Errors.PRBMath_SD59x18_Exp_InputTooBig(x);
}
unchecked {
// Inline the fixed-point multiplication to save gas.
int256 doubleUnitProduct = xInt * uLOG2_E;
result = exp2(wrap(doubleUnitProduct / uUNIT));
}
}
/// @notice Calculates the binary exponent of x using the binary fraction method using the following formula:
///
/// $$
/// 2^{-x} = \frac{1}{2^x}
/// $$
///
/// @dev See https://ethereum.stackexchange.com/q/79903/24693.
///
/// Notes:
/// - If x < -59_794705707972522261, the result is zero.
///
/// Requirements:
/// - x < 192e18.
/// - The result must fit in SD59x18.
///
/// @param x The exponent as an SD59x18 number.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp2(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
if (xInt < 0) {
// The inverse of any number less than the threshold is truncated to zero.
if (xInt < uEXP2_MIN_THRESHOLD) {
return ZERO;
}
unchecked {
// Inline the fixed-point inversion to save gas.
result = wrap(uUNIT_SQUARED / exp2(wrap(-xInt)).unwrap());
}
} else {
// Numbers greater than or equal to 192e18 don't fit in the 192.64-bit format.
if (xInt > uEXP2_MAX_INPUT) {
revert Errors.PRBMath_SD59x18_Exp2_InputTooBig(x);
}
unchecked {
// Convert x to the 192.64-bit fixed-point format.
uint256 x_192x64 = uint256((xInt << 64) / uUNIT);
// It is safe to cast the result to int256 due to the checks above.
result = wrap(int256(Common.exp2(x_192x64)));
}
}
}
/// @notice Yields the greatest whole number less than or equal to x.
///
/// @dev Optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional
/// counterparts. See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
///
/// Requirements:
/// - x ≥ MIN_WHOLE_SD59x18
///
/// @param x The SD59x18 number to floor.
/// @return result The greatest whole number less than or equal to x, as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function floor(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
if (xInt < uMIN_WHOLE_SD59x18) {
revert Errors.PRBMath_SD59x18_Floor_Underflow(x);
}
int256 remainder = xInt % uUNIT;
if (remainder == 0) {
result = x;
} else {
unchecked {
// Solidity uses C fmod style, which returns a modulus with the same sign as x.
int256 resultInt = xInt - remainder;
if (xInt < 0) {
resultInt -= uUNIT;
}
result = wrap(resultInt);
}
}
}
/// @notice Yields the excess beyond the floor of x for positive numbers and the part of the number to the right.
/// of the radix point for negative numbers.
/// @dev Based on the odd function definition. https://en.wikipedia.org/wiki/Fractional_part
/// @param x The SD59x18 number to get the fractional part of.
/// @return result The fractional part of x as an SD59x18 number.
function frac(SD59x18 x) pure returns (SD59x18 result) {
result = wrap(x.unwrap() % uUNIT);
}
/// @notice Calculates the geometric mean of x and y, i.e. $\sqrt{x * y}$.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x * y must fit in SD59x18.
/// - x * y must not be negative, since complex numbers are not supported.
///
/// @param x The first operand as an SD59x18 number.
/// @param y The second operand as an SD59x18 number.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function gm(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
int256 yInt = y.unwrap();
if (xInt == 0 || yInt == 0) {
return ZERO;
}
unchecked {
// Equivalent to `xy / x != y`. Checking for overflow this way is faster than letting Solidity do it.
int256 xyInt = xInt * yInt;
if (xyInt / xInt != yInt) {
revert Errors.PRBMath_SD59x18_Gm_Overflow(x, y);
}
// The product must not be negative, since complex numbers are not supported.
if (xyInt < 0) {
revert Errors.PRBMath_SD59x18_Gm_NegativeProduct(x, y);
}
// We don't need to multiply the result by `UNIT` here because the x*y product picked up a factor of `UNIT`
// during multiplication. See the comments in {Common.sqrt}.
uint256 resultUint = Common.sqrt(uint256(xyInt));
result = wrap(int256(resultUint));
}
}
/// @notice Calculates the inverse of x.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x must not be zero.
///
/// @param x The SD59x18 number for which to calculate the inverse.
/// @return result The inverse as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function inv(SD59x18 x) pure returns (SD59x18 result) {
result = wrap(uUNIT_SQUARED / x.unwrap());
}
/// @notice Calculates the natural logarithm of x using the following formula:
///
/// $$
/// ln{x} = log_2{x} / log_2{e}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
/// - The precision isn't sufficiently fine-grained to return exactly `UNIT` when the input is `E`.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The SD59x18 number for which to calculate the natural logarithm.
/// @return result The natural logarithm as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function ln(SD59x18 x) pure returns (SD59x18 result) {
// Inline the fixed-point multiplication to save gas. This is overflow-safe because the maximum value that
// {log2} can return is ~195_205294292027477728.
result = wrap(log2(x).unwrap() * uUNIT / uLOG2_E);
}
/// @notice Calculates the common logarithm of x using the following formula:
///
/// $$
/// log_{10}{x} = log_2{x} / log_2{10}
/// $$
///
/// However, if x is an exact power of ten, a hard coded value is returned.
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The SD59x18 number for which to calculate the common logarithm.
/// @return result The common logarithm as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function log10(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
if (xInt < 0) {
revert Errors.PRBMath_SD59x18_Log_InputTooSmall(x);
}
// Note that the `mul` in this block is the standard multiplication operation, not {SD59x18.mul}.
// prettier-ignore
assembly ("memory-safe") {
switch x
case 1 { result := mul(uUNIT, sub(0, 18)) }
case 10 { result := mul(uUNIT, sub(1, 18)) }
case 100 { result := mul(uUNIT, sub(2, 18)) }
case 1000 { result := mul(uUNIT, sub(3, 18)) }
case 10000 { result := mul(uUNIT, sub(4, 18)) }
case 100000 { result := mul(uUNIT, sub(5, 18)) }
case 1000000 { result := mul(uUNIT, sub(6, 18)) }
case 10000000 { result := mul(uUNIT, sub(7, 18)) }
case 100000000 { result := mul(uUNIT, sub(8, 18)) }
case 1000000000 { result := mul(uUNIT, sub(9, 18)) }
case 10000000000 { result := mul(uUNIT, sub(10, 18)) }
case 100000000000 { result := mul(uUNIT, sub(11, 18)) }
case 1000000000000 { result := mul(uUNIT, sub(12, 18)) }
case 10000000000000 { result := mul(uUNIT, sub(13, 18)) }
case 100000000000000 { result := mul(uUNIT, sub(14, 18)) }
case 1000000000000000 { result := mul(uUNIT, sub(15, 18)) }
case 10000000000000000 { result := mul(uUNIT, sub(16, 18)) }
case 100000000000000000 { result := mul(uUNIT, sub(17, 18)) }
case 1000000000000000000 { result := 0 }
case 10000000000000000000 { result := uUNIT }
case 100000000000000000000 { result := mul(uUNIT, 2) }
case 1000000000000000000000 { result := mul(uUNIT, 3) }
case 10000000000000000000000 { result := mul(uUNIT, 4) }
case 100000000000000000000000 { result := mul(uUNIT, 5) }
case 1000000000000000000000000 { result := mul(uUNIT, 6) }
case 10000000000000000000000000 { result := mul(uUNIT, 7) }
case 100000000000000000000000000 { result := mul(uUNIT, 8) }
case 1000000000000000000000000000 { result := mul(uUNIT, 9) }
case 10000000000000000000000000000 { result := mul(uUNIT, 10) }
case 100000000000000000000000000000 { result := mul(uUNIT, 11) }
case 1000000000000000000000000000000 { result := mul(uUNIT, 12) }
case 10000000000000000000000000000000 { result := mul(uUNIT, 13) }
case 100000000000000000000000000000000 { result := mul(uUNIT, 14) }
case 1000000000000000000000000000000000 { result := mul(uUNIT, 15) }
case 10000000000000000000000000000000000 { result := mul(uUNIT, 16) }
case 100000000000000000000000000000000000 { result := mul(uUNIT, 17) }
case 1000000000000000000000000000000000000 { result := mul(uUNIT, 18) }
case 10000000000000000000000000000000000000 { result := mul(uUNIT, 19) }
case 100000000000000000000000000000000000000 { result := mul(uUNIT, 20) }
case 1000000000000000000000000000000000000000 { result := mul(uUNIT, 21) }
case 10000000000000000000000000000000000000000 { result := mul(uUNIT, 22) }
case 100000000000000000000000000000000000000000 { result := mul(uUNIT, 23) }
case 1000000000000000000000000000000000000000000 { result := mul(uUNIT, 24) }
case 10000000000000000000000000000000000000000000 { result := mul(uUNIT, 25) }
case 100000000000000000000000000000000000000000000 { result := mul(uUNIT, 26) }
case 1000000000000000000000000000000000000000000000 { result := mul(uUNIT, 27) }
case 10000000000000000000000000000000000000000000000 { result := mul(uUNIT, 28) }
case 100000000000000000000000000000000000000000000000 { result := mul(uUNIT, 29) }
case 1000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 30) }
case 10000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 31) }
case 100000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 32) }
case 1000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 33) }
case 10000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 34) }
case 100000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 35) }
case 1000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 36) }
case 10000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 37) }
case 100000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 38) }
case 1000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 39) }
case 10000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 40) }
case 100000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 41) }
case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 42) }
case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 43) }
case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 44) }
case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 45) }
case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 46) }
case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 47) }
case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 48) }
case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 49) }
case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 50) }
case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 51) }
case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 52) }
case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 53) }
case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 54) }
case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 55) }
case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 56) }
case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 57) }
case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 58) }
default { result := uMAX_SD59x18 }
}
if (result.unwrap() == uMAX_SD59x18) {
unchecked {
// Inline the fixed-point division to save gas.
result = wrap(log2(x).unwrap() * uUNIT / uLOG2_10);
}
}
}
/// @notice Calculates the binary logarithm of x using the iterative approximation algorithm:
///
/// $$
/// log_2{x} = n + log_2{y}, \text{ where } y = x*2^{-n}, \ y \in [1, 2)
/// $$
///
/// For $0 \leq x \lt 1$, the input is inverted:
///
/// $$
/// log_2{x} = -log_2{\frac{1}{x}}
/// $$
///
/// @dev See https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation.
///
/// Notes:
/// - Due to the lossy precision of the iterative approximation, the results are not perfectly accurate to the last decimal.
///
/// Requirements:
/// - x > 0
///
/// @param x The SD59x18 number for which to calculate the binary logarithm.
/// @return result The binary logarithm as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function log2(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
if (xInt <= 0) {
revert Errors.PRBMath_SD59x18_Log_InputTooSmall(x);
}
unchecked {
int256 sign;
if (xInt >= uUNIT) {
sign = 1;
} else {
sign = -1;
// Inline the fixed-point inversion to save gas.
xInt = uUNIT_SQUARED / xInt;
}
// Calculate the integer part of the logarithm.
uint256 n = Common.msb(uint256(xInt / uUNIT));
// This is the integer part of the logarithm as an SD59x18 number. The operation can't overflow
// because n is at most 255, `UNIT` is 1e18, and the sign is either 1 or -1.
int256 resultInt = int256(n) * uUNIT;
// Calculate $y = x * 2^{-n}$.
int256 y = xInt >> n;
// If y is the unit number, the fractional part is zero.
if (y == uUNIT) {
return wrap(resultInt * sign);
}
// Calculate the fractional part via the iterative approximation.
// The `delta >>= 1` part is equivalent to `delta /= 2`, but shifting bits is more gas efficient.
int256 DOUBLE_UNIT = 2e18;
for (int256 delta = uHALF_UNIT; delta > 0; delta >>= 1) {
y = (y * y) / uUNIT;
// Is y^2 >= 2e18 and so in the range [2e18, 4e18)?
if (y >= DOUBLE_UNIT) {
// Add the 2^{-m} factor to the logarithm.
resultInt = resultInt + delta;
// Halve y, which corresponds to z/2 in the Wikipedia article.
y >>= 1;
}
}
resultInt *= sign;
result = wrap(resultInt);
}
}
/// @notice Multiplies two SD59x18 numbers together, returning a new SD59x18 number.
///
/// @dev Notes:
/// - Refer to the notes in {Common.mulDiv18}.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv18}.
/// - None of the inputs can be `MIN_SD59x18`.
/// - The result must fit in SD59x18.
///
/// @param x The multiplicand as an SD59x18 number.
/// @param y The multiplier as an SD59x18 number.
/// @return result The product as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function mul(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
int256 yInt = y.unwrap();
if (xInt == uMIN_SD59x18 || yInt == uMIN_SD59x18) {
revert Errors.PRBMath_SD59x18_Mul_InputTooSmall();
}
// Get hold of the absolute values of x and y.
uint256 xAbs;
uint256 yAbs;
unchecked {
xAbs = xInt < 0 ? uint256(-xInt) : uint256(xInt);
yAbs = yInt < 0 ? uint256(-yInt) : uint256(yInt);
}
// Compute the absolute value (x*y÷UNIT). The resulting value must fit in SD59x18.
uint256 resultAbs = Common.mulDiv18(xAbs, yAbs);
if (resultAbs > uint256(uMAX_SD59x18)) {
revert Errors.PRBMath_SD59x18_Mul_Overflow(x, y);
}
// Check if x and y have the same sign using two's complement representation. The left-most bit represents the sign (1 for
// negative, 0 for positive or zero).
bool sameSign = (xInt ^ yInt) > -1;
// If the inputs have the same sign, the result should be positive. Otherwise, it should be negative.
unchecked {
result = wrap(sameSign ? int256(resultAbs) : -int256(resultAbs));
}
}
/// @notice Raises x to the power of y using the following formula:
///
/// $$
/// x^y = 2^{log_2{x} * y}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {exp2}, {log2}, and {mul}.
/// - Returns `UNIT` for 0^0.
///
/// Requirements:
/// - Refer to the requirements in {exp2}, {log2}, and {mul}.
///
/// @param x The base as an SD59x18 number.
/// @param y Exponent to raise x to, as an SD59x18 number
/// @return result x raised to power y, as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function pow(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
int256 yInt = y.unwrap();
// If both x and y are zero, the result is `UNIT`. If just x is zero, the result is always zero.
if (xInt == 0) {
return yInt == 0 ? UNIT : ZERO;
}
// If x is `UNIT`, the result is always `UNIT`.
else if (xInt == uUNIT) {
return UNIT;
}
// If y is zero, the result is always `UNIT`.
if (yInt == 0) {
return UNIT;
}
// If y is `UNIT`, the result is always x.
else if (yInt == uUNIT) {
return x;
}
// Calculate the result using the formula.
result = exp2(mul(log2(x), y));
}
/// @notice Raises x (an SD59x18 number) to the power y (an unsigned basic integer) using the well-known
/// algorithm "exponentiation by squaring".
///
/// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv18}.
/// - Returns `UNIT` for 0^0.
///
/// Requirements:
/// - Refer to the requirements in {abs} and {Common.mulDiv18}.
/// - The result must fit in SD59x18.
///
/// @param x The base as an SD59x18 number.
/// @param y The exponent as a uint256.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function powu(SD59x18 x, uint256 y) pure returns (SD59x18 result) {
uint256 xAbs = uint256(abs(x).unwrap());
// Calculate the first iteration of the loop in advance.
uint256 resultAbs = y & 1 > 0 ? xAbs : uint256(uUNIT);
// Equivalent to `for(y /= 2; y > 0; y /= 2)`.
uint256 yAux = y;
for (yAux >>= 1; yAux > 0; yAux >>= 1) {
xAbs = Common.mulDiv18(xAbs, xAbs);
// Equivalent to `y % 2 == 1`.
if (yAux & 1 > 0) {
resultAbs = Common.mulDiv18(resultAbs, xAbs);
}
}
// The result must fit in SD59x18.
if (resultAbs > uint256(uMAX_SD59x18)) {
revert Errors.PRBMath_SD59x18_Powu_Overflow(x, y);
}
unchecked {
// Is the base negative and the exponent odd? If yes, the result should be negative.
int256 resultInt = int256(resultAbs);
bool isNegative = x.unwrap() < 0 && y & 1 == 1;
if (isNegative) {
resultInt = -resultInt;
}
result = wrap(resultInt);
}
}
/// @notice Calculates the square root of x using the Babylonian method.
///
/// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Notes:
/// - Only the positive root is returned.
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x ≥ 0, since complex numbers are not supported.
/// - x ≤ MAX_SD59x18 / UNIT
///
/// @param x The SD59x18 number for which to calculate the square root.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function sqrt(SD59x18 x) pure returns (SD59x18 result) {
int256 xInt = x.unwrap();
if (xInt < 0) {
revert Errors.PRBMath_SD59x18_Sqrt_NegativeInput(x);
}
if (xInt > uMAX_SD59x18 / uUNIT) {
revert Errors.PRBMath_SD59x18_Sqrt_Overflow(x);
}
unchecked {
// Multiply x by `UNIT` to account for the factor of `UNIT` picked up when multiplying two SD59x18 numbers.
// In this case, the two numbers are both the square root.
uint256 resultUint = Common.sqrt(uint256(xInt * uUNIT));
result = wrap(int256(resultUint));
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "./Errors.sol" as CastingErrors;
import { MAX_UINT128, MAX_UINT40 } from "../Common.sol";
import { uMAX_SD1x18 } from "../sd1x18/Constants.sol";
import { SD1x18 } from "../sd1x18/ValueType.sol";
import { uMAX_SD21x18 } from "../sd21x18/Constants.sol";
import { SD21x18 } from "../sd21x18/ValueType.sol";
import { uMAX_SD59x18 } from "../sd59x18/Constants.sol";
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { uMAX_UD2x18 } from "../ud2x18/Constants.sol";
import { uMAX_UD21x18 } from "../ud21x18/Constants.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { UD21x18 } from "../ud21x18/ValueType.sol";
import { UD60x18 } from "./ValueType.sol";
/// @notice Casts a UD60x18 number into SD1x18.
/// @dev Requirements:
/// - x ≤ uMAX_SD1x18
function intoSD1x18(UD60x18 x) pure returns (SD1x18 result) {
uint256 xUint = UD60x18.unwrap(x);
if (xUint > uint256(int256(uMAX_SD1x18))) {
revert CastingErrors.PRBMath_UD60x18_IntoSD1x18_Overflow(x);
}
result = SD1x18.wrap(int64(uint64(xUint)));
}
/// @notice Casts a UD60x18 number into SD21x18.
/// @dev Requirements:
/// - x ≤ uMAX_SD21x18
function intoSD21x18(UD60x18 x) pure returns (SD21x18 result) {
uint256 xUint = UD60x18.unwrap(x);
if (xUint > uint256(int256(uMAX_SD21x18))) {
revert CastingErrors.PRBMath_UD60x18_IntoSD21x18_Overflow(x);
}
result = SD21x18.wrap(int128(uint128(xUint)));
}
/// @notice Casts a UD60x18 number into UD2x18.
/// @dev Requirements:
/// - x ≤ uMAX_UD2x18
function intoUD2x18(UD60x18 x) pure returns (UD2x18 result) {
uint256 xUint = UD60x18.unwrap(x);
if (xUint > uMAX_UD2x18) {
revert CastingErrors.PRBMath_UD60x18_IntoUD2x18_Overflow(x);
}
result = UD2x18.wrap(uint64(xUint));
}
/// @notice Casts a UD60x18 number into UD21x18.
/// @dev Requirements:
/// - x ≤ uMAX_UD21x18
function intoUD21x18(UD60x18 x) pure returns (UD21x18 result) {
uint256 xUint = UD60x18.unwrap(x);
if (xUint > uMAX_UD21x18) {
revert CastingErrors.PRBMath_UD60x18_IntoUD21x18_Overflow(x);
}
result = UD21x18.wrap(uint128(xUint));
}
/// @notice Casts a UD60x18 number into SD59x18.
/// @dev Requirements:
/// - x ≤ uMAX_SD59x18
function intoSD59x18(UD60x18 x) pure returns (SD59x18 result) {
uint256 xUint = UD60x18.unwrap(x);
if (xUint > uint256(uMAX_SD59x18)) {
revert CastingErrors.PRBMath_UD60x18_IntoSD59x18_Overflow(x);
}
result = SD59x18.wrap(int256(xUint));
}
/// @notice Casts a UD60x18 number into uint128.
/// @dev This is basically an alias for {unwrap}.
function intoUint256(UD60x18 x) pure returns (uint256 result) {
result = UD60x18.unwrap(x);
}
/// @notice Casts a UD60x18 number into uint128.
/// @dev Requirements:
/// - x ≤ MAX_UINT128
function intoUint128(UD60x18 x) pure returns (uint128 result) {
uint256 xUint = UD60x18.unwrap(x);
if (xUint > MAX_UINT128) {
revert CastingErrors.PRBMath_UD60x18_IntoUint128_Overflow(x);
}
result = uint128(xUint);
}
/// @notice Casts a UD60x18 number into uint40.
/// @dev Requirements:
/// - x ≤ MAX_UINT40
function intoUint40(UD60x18 x) pure returns (uint40 result) {
uint256 xUint = UD60x18.unwrap(x);
if (xUint > MAX_UINT40) {
revert CastingErrors.PRBMath_UD60x18_IntoUint40_Overflow(x);
}
result = uint40(xUint);
}
/// @notice Alias for {wrap}.
function ud(uint256 x) pure returns (UD60x18 result) {
result = UD60x18.wrap(x);
}
/// @notice Alias for {wrap}.
function ud60x18(uint256 x) pure returns (UD60x18 result) {
result = UD60x18.wrap(x);
}
/// @notice Unwraps a UD60x18 number into uint256.
function unwrap(UD60x18 x) pure returns (uint256 result) {
result = UD60x18.unwrap(x);
}
/// @notice Wraps a uint256 number into the UD60x18 value type.
function wrap(uint256 x) pure returns (UD60x18 result) {
result = UD60x18.wrap(x);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { UD60x18 } from "./ValueType.sol";
// NOTICE: the "u" prefix stands for "unwrapped".
/// @dev Euler's number as a UD60x18 number.
UD60x18 constant E = UD60x18.wrap(2_718281828459045235);
/// @dev The maximum input permitted in {exp}.
uint256 constant uEXP_MAX_INPUT = 133_084258667509499440;
UD60x18 constant EXP_MAX_INPUT = UD60x18.wrap(uEXP_MAX_INPUT);
/// @dev The maximum input permitted in {exp2}.
uint256 constant uEXP2_MAX_INPUT = 192e18 - 1;
UD60x18 constant EXP2_MAX_INPUT = UD60x18.wrap(uEXP2_MAX_INPUT);
/// @dev Half the UNIT number.
uint256 constant uHALF_UNIT = 0.5e18;
UD60x18 constant HALF_UNIT = UD60x18.wrap(uHALF_UNIT);
/// @dev $log_2(10)$ as a UD60x18 number.
uint256 constant uLOG2_10 = 3_321928094887362347;
UD60x18 constant LOG2_10 = UD60x18.wrap(uLOG2_10);
/// @dev $log_2(e)$ as a UD60x18 number.
uint256 constant uLOG2_E = 1_442695040888963407;
UD60x18 constant LOG2_E = UD60x18.wrap(uLOG2_E);
/// @dev The maximum value a UD60x18 number can have.
uint256 constant uMAX_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_584007913129639935;
UD60x18 constant MAX_UD60x18 = UD60x18.wrap(uMAX_UD60x18);
/// @dev The maximum whole value a UD60x18 number can have.
uint256 constant uMAX_WHOLE_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_000000000000000000;
UD60x18 constant MAX_WHOLE_UD60x18 = UD60x18.wrap(uMAX_WHOLE_UD60x18);
/// @dev PI as a UD60x18 number.
UD60x18 constant PI = UD60x18.wrap(3_141592653589793238);
/// @dev The unit number, which gives the decimal precision of UD60x18.
uint256 constant uUNIT = 1e18;
UD60x18 constant UNIT = UD60x18.wrap(uUNIT);
/// @dev The unit number squared.
uint256 constant uUNIT_SQUARED = 1e36;
UD60x18 constant UNIT_SQUARED = UD60x18.wrap(uUNIT_SQUARED);
/// @dev Zero as a UD60x18 number.
UD60x18 constant ZERO = UD60x18.wrap(0);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { uMAX_UD60x18, uUNIT } from "./Constants.sol";
import { PRBMath_UD60x18_Convert_Overflow } from "./Errors.sol";
import { UD60x18 } from "./ValueType.sol";
/// @notice Converts a UD60x18 number to a simple integer by dividing it by `UNIT`.
/// @dev The result is rounded toward zero.
/// @param x The UD60x18 number to convert.
/// @return result The same number in basic integer form.
function convert(UD60x18 x) pure returns (uint256 result) {
result = UD60x18.unwrap(x) / uUNIT;
}
/// @notice Converts a simple integer to UD60x18 by multiplying it by `UNIT`.
///
/// @dev Requirements:
/// - x ≤ MAX_UD60x18 / UNIT
///
/// @param x The basic integer to convert.
/// @return result The same number converted to UD60x18.
function convert(uint256 x) pure returns (UD60x18 result) {
if (x > uMAX_UD60x18 / uUNIT) {
revert PRBMath_UD60x18_Convert_Overflow(x);
}
unchecked {
result = UD60x18.wrap(x * uUNIT);
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { UD60x18 } from "./ValueType.sol";
/// @notice Thrown when ceiling a number overflows UD60x18.
error PRBMath_UD60x18_Ceil_Overflow(UD60x18 x);
/// @notice Thrown when converting a basic integer to the fixed-point format overflows UD60x18.
error PRBMath_UD60x18_Convert_Overflow(uint256 x);
/// @notice Thrown when taking the natural exponent of a base greater than 133_084258667509499441.
error PRBMath_UD60x18_Exp_InputTooBig(UD60x18 x);
/// @notice Thrown when taking the binary exponent of a base greater than 192e18.
error PRBMath_UD60x18_Exp2_InputTooBig(UD60x18 x);
/// @notice Thrown when taking the geometric mean of two numbers and multiplying them overflows UD60x18.
error PRBMath_UD60x18_Gm_Overflow(UD60x18 x, UD60x18 y);
/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD1x18.
error PRBMath_UD60x18_IntoSD1x18_Overflow(UD60x18 x);
/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD21x18.
error PRBMath_UD60x18_IntoSD21x18_Overflow(UD60x18 x);
/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD59x18.
error PRBMath_UD60x18_IntoSD59x18_Overflow(UD60x18 x);
/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD2x18.
error PRBMath_UD60x18_IntoUD2x18_Overflow(UD60x18 x);
/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD21x18.
error PRBMath_UD60x18_IntoUD21x18_Overflow(UD60x18 x);
/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint128.
error PRBMath_UD60x18_IntoUint128_Overflow(UD60x18 x);
/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint40.
error PRBMath_UD60x18_IntoUint40_Overflow(UD60x18 x);
/// @notice Thrown when taking the logarithm of a number less than UNIT.
error PRBMath_UD60x18_Log_InputTooSmall(UD60x18 x);
/// @notice Thrown when calculating the square root overflows UD60x18.
error PRBMath_UD60x18_Sqrt_Overflow(UD60x18 x);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { wrap } from "./Casting.sol";
import { UD60x18 } from "./ValueType.sol";
/// @notice Implements the checked addition operation (+) in the UD60x18 type.
function add(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(x.unwrap() + y.unwrap());
}
/// @notice Implements the AND (&) bitwise operation in the UD60x18 type.
function and(UD60x18 x, uint256 bits) pure returns (UD60x18 result) {
result = wrap(x.unwrap() & bits);
}
/// @notice Implements the AND (&) bitwise operation in the UD60x18 type.
function and2(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(x.unwrap() & y.unwrap());
}
/// @notice Implements the equal operation (==) in the UD60x18 type.
function eq(UD60x18 x, UD60x18 y) pure returns (bool result) {
result = x.unwrap() == y.unwrap();
}
/// @notice Implements the greater than operation (>) in the UD60x18 type.
function gt(UD60x18 x, UD60x18 y) pure returns (bool result) {
result = x.unwrap() > y.unwrap();
}
/// @notice Implements the greater than or equal to operation (>=) in the UD60x18 type.
function gte(UD60x18 x, UD60x18 y) pure returns (bool result) {
result = x.unwrap() >= y.unwrap();
}
/// @notice Implements a zero comparison check function in the UD60x18 type.
function isZero(UD60x18 x) pure returns (bool result) {
// This wouldn't work if x could be negative.
result = x.unwrap() == 0;
}
/// @notice Implements the left shift operation (<<) in the UD60x18 type.
function lshift(UD60x18 x, uint256 bits) pure returns (UD60x18 result) {
result = wrap(x.unwrap() << bits);
}
/// @notice Implements the lower than operation (<) in the UD60x18 type.
function lt(UD60x18 x, UD60x18 y) pure returns (bool result) {
result = x.unwrap() < y.unwrap();
}
/// @notice Implements the lower than or equal to operation (<=) in the UD60x18 type.
function lte(UD60x18 x, UD60x18 y) pure returns (bool result) {
result = x.unwrap() <= y.unwrap();
}
/// @notice Implements the checked modulo operation (%) in the UD60x18 type.
function mod(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(x.unwrap() % y.unwrap());
}
/// @notice Implements the not equal operation (!=) in the UD60x18 type.
function neq(UD60x18 x, UD60x18 y) pure returns (bool result) {
result = x.unwrap() != y.unwrap();
}
/// @notice Implements the NOT (~) bitwise operation in the UD60x18 type.
function not(UD60x18 x) pure returns (UD60x18 result) {
result = wrap(~x.unwrap());
}
/// @notice Implements the OR (|) bitwise operation in the UD60x18 type.
function or(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(x.unwrap() | y.unwrap());
}
/// @notice Implements the right shift operation (>>) in the UD60x18 type.
function rshift(UD60x18 x, uint256 bits) pure returns (UD60x18 result) {
result = wrap(x.unwrap() >> bits);
}
/// @notice Implements the checked subtraction operation (-) in the UD60x18 type.
function sub(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(x.unwrap() - y.unwrap());
}
/// @notice Implements the unchecked addition operation (+) in the UD60x18 type.
function uncheckedAdd(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
unchecked {
result = wrap(x.unwrap() + y.unwrap());
}
}
/// @notice Implements the unchecked subtraction operation (-) in the UD60x18 type.
function uncheckedSub(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
unchecked {
result = wrap(x.unwrap() - y.unwrap());
}
}
/// @notice Implements the XOR (^) bitwise operation in the UD60x18 type.
function xor(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(x.unwrap() ^ y.unwrap());
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "../Common.sol" as Common;
import "./Errors.sol" as Errors;
import { wrap } from "./Casting.sol";
import {
uEXP_MAX_INPUT,
uEXP2_MAX_INPUT,
uHALF_UNIT,
uLOG2_10,
uLOG2_E,
uMAX_UD60x18,
uMAX_WHOLE_UD60x18,
UNIT,
uUNIT,
uUNIT_SQUARED,
ZERO
} from "./Constants.sol";
import { UD60x18 } from "./ValueType.sol";
/*//////////////////////////////////////////////////////////////////////////
MATHEMATICAL FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Calculates the arithmetic average of x and y using the following formula:
///
/// $$
/// avg(x, y) = (x & y) + ((xUint ^ yUint) / 2)
/// $$
///
/// In English, this is what this formula does:
///
/// 1. AND x and y.
/// 2. Calculate half of XOR x and y.
/// 3. Add the two results together.
///
/// This technique is known as SWAR, which stands for "SIMD within a register". You can read more about it here:
/// https://devblogs.microsoft.com/oldnewthing/20220207-00/?p=106223
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// @param x The first operand as a UD60x18 number.
/// @param y The second operand as a UD60x18 number.
/// @return result The arithmetic average as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function avg(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
uint256 yUint = y.unwrap();
unchecked {
result = wrap((xUint & yUint) + ((xUint ^ yUint) >> 1));
}
}
/// @notice Yields the smallest whole number greater than or equal to x.
///
/// @dev This is optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional
/// counterparts. See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
///
/// Requirements:
/// - x ≤ MAX_WHOLE_UD60x18
///
/// @param x The UD60x18 number to ceil.
/// @return result The smallest whole number greater than or equal to x, as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function ceil(UD60x18 x) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
if (xUint > uMAX_WHOLE_UD60x18) {
revert Errors.PRBMath_UD60x18_Ceil_Overflow(x);
}
assembly ("memory-safe") {
// Equivalent to `x % UNIT`.
let remainder := mod(x, uUNIT)
// Equivalent to `UNIT - remainder`.
let delta := sub(uUNIT, remainder)
// Equivalent to `x + remainder > 0 ? delta : 0`.
result := add(x, mul(delta, gt(remainder, 0)))
}
}
/// @notice Divides two UD60x18 numbers, returning a new UD60x18 number.
///
/// @dev Uses {Common.mulDiv} to enable overflow-safe multiplication and division.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv}.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv}.
///
/// @param x The numerator as a UD60x18 number.
/// @param y The denominator as a UD60x18 number.
/// @return result The quotient as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function div(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(Common.mulDiv(x.unwrap(), uUNIT, y.unwrap()));
}
/// @notice Calculates the natural exponent of x using the following formula:
///
/// $$
/// e^x = 2^{x * log_2{e}}
/// $$
///
/// @dev Requirements:
/// - x ≤ 133_084258667509499440
///
/// @param x The exponent as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp(UD60x18 x) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
// This check prevents values greater than 192e18 from being passed to {exp2}.
if (xUint > uEXP_MAX_INPUT) {
revert Errors.PRBMath_UD60x18_Exp_InputTooBig(x);
}
unchecked {
// Inline the fixed-point multiplication to save gas.
uint256 doubleUnitProduct = xUint * uLOG2_E;
result = exp2(wrap(doubleUnitProduct / uUNIT));
}
}
/// @notice Calculates the binary exponent of x using the binary fraction method.
///
/// @dev See https://ethereum.stackexchange.com/q/79903/24693
///
/// Requirements:
/// - x < 192e18
/// - The result must fit in UD60x18.
///
/// @param x The exponent as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp2(UD60x18 x) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
// Numbers greater than or equal to 192e18 don't fit in the 192.64-bit format.
if (xUint > uEXP2_MAX_INPUT) {
revert Errors.PRBMath_UD60x18_Exp2_InputTooBig(x);
}
// Convert x to the 192.64-bit fixed-point format.
uint256 x_192x64 = (xUint << 64) / uUNIT;
// Pass x to the {Common.exp2} function, which uses the 192.64-bit fixed-point number representation.
result = wrap(Common.exp2(x_192x64));
}
/// @notice Yields the greatest whole number less than or equal to x.
/// @dev Optimized for fractional value inputs, because every whole value has (1e18 - 1) fractional counterparts.
/// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
/// @param x The UD60x18 number to floor.
/// @return result The greatest whole number less than or equal to x, as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function floor(UD60x18 x) pure returns (UD60x18 result) {
assembly ("memory-safe") {
// Equivalent to `x % UNIT`.
let remainder := mod(x, uUNIT)
// Equivalent to `x - remainder > 0 ? remainder : 0)`.
result := sub(x, mul(remainder, gt(remainder, 0)))
}
}
/// @notice Yields the excess beyond the floor of x using the odd function definition.
/// @dev See https://en.wikipedia.org/wiki/Fractional_part.
/// @param x The UD60x18 number to get the fractional part of.
/// @return result The fractional part of x as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function frac(UD60x18 x) pure returns (UD60x18 result) {
assembly ("memory-safe") {
result := mod(x, uUNIT)
}
}
/// @notice Calculates the geometric mean of x and y, i.e. $\sqrt{x * y}$, rounding down.
///
/// @dev Requirements:
/// - x * y must fit in UD60x18.
///
/// @param x The first operand as a UD60x18 number.
/// @param y The second operand as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function gm(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
uint256 yUint = y.unwrap();
if (xUint == 0 || yUint == 0) {
return ZERO;
}
unchecked {
// Checking for overflow this way is faster than letting Solidity do it.
uint256 xyUint = xUint * yUint;
if (xyUint / xUint != yUint) {
revert Errors.PRBMath_UD60x18_Gm_Overflow(x, y);
}
// We don't need to multiply the result by `UNIT` here because the x*y product picked up a factor of `UNIT`
// during multiplication. See the comments in {Common.sqrt}.
result = wrap(Common.sqrt(xyUint));
}
}
/// @notice Calculates the inverse of x.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x must not be zero.
///
/// @param x The UD60x18 number for which to calculate the inverse.
/// @return result The inverse as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function inv(UD60x18 x) pure returns (UD60x18 result) {
unchecked {
result = wrap(uUNIT_SQUARED / x.unwrap());
}
}
/// @notice Calculates the natural logarithm of x using the following formula:
///
/// $$
/// ln{x} = log_2{x} / log_2{e}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
/// - The precision isn't sufficiently fine-grained to return exactly `UNIT` when the input is `E`.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The UD60x18 number for which to calculate the natural logarithm.
/// @return result The natural logarithm as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function ln(UD60x18 x) pure returns (UD60x18 result) {
unchecked {
// Inline the fixed-point multiplication to save gas. This is overflow-safe because the maximum value that
// {log2} can return is ~196_205294292027477728.
result = wrap(log2(x).unwrap() * uUNIT / uLOG2_E);
}
}
/// @notice Calculates the common logarithm of x using the following formula:
///
/// $$
/// log_{10}{x} = log_2{x} / log_2{10}
/// $$
///
/// However, if x is an exact power of ten, a hard coded value is returned.
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The UD60x18 number for which to calculate the common logarithm.
/// @return result The common logarithm as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function log10(UD60x18 x) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
if (xUint < uUNIT) {
revert Errors.PRBMath_UD60x18_Log_InputTooSmall(x);
}
// Note that the `mul` in this assembly block is the standard multiplication operation, not {UD60x18.mul}.
// prettier-ignore
assembly ("memory-safe") {
switch x
case 1 { result := mul(uUNIT, sub(0, 18)) }
case 10 { result := mul(uUNIT, sub(1, 18)) }
case 100 { result := mul(uUNIT, sub(2, 18)) }
case 1000 { result := mul(uUNIT, sub(3, 18)) }
case 10000 { result := mul(uUNIT, sub(4, 18)) }
case 100000 { result := mul(uUNIT, sub(5, 18)) }
case 1000000 { result := mul(uUNIT, sub(6, 18)) }
case 10000000 { result := mul(uUNIT, sub(7, 18)) }
case 100000000 { result := mul(uUNIT, sub(8, 18)) }
case 1000000000 { result := mul(uUNIT, sub(9, 18)) }
case 10000000000 { result := mul(uUNIT, sub(10, 18)) }
case 100000000000 { result := mul(uUNIT, sub(11, 18)) }
case 1000000000000 { result := mul(uUNIT, sub(12, 18)) }
case 10000000000000 { result := mul(uUNIT, sub(13, 18)) }
case 100000000000000 { result := mul(uUNIT, sub(14, 18)) }
case 1000000000000000 { result := mul(uUNIT, sub(15, 18)) }
case 10000000000000000 { result := mul(uUNIT, sub(16, 18)) }
case 100000000000000000 { result := mul(uUNIT, sub(17, 18)) }
case 1000000000000000000 { result := 0 }
case 10000000000000000000 { result := uUNIT }
case 100000000000000000000 { result := mul(uUNIT, 2) }
case 1000000000000000000000 { result := mul(uUNIT, 3) }
case 10000000000000000000000 { result := mul(uUNIT, 4) }
case 100000000000000000000000 { result := mul(uUNIT, 5) }
case 1000000000000000000000000 { result := mul(uUNIT, 6) }
case 10000000000000000000000000 { result := mul(uUNIT, 7) }
case 100000000000000000000000000 { result := mul(uUNIT, 8) }
case 1000000000000000000000000000 { result := mul(uUNIT, 9) }
case 10000000000000000000000000000 { result := mul(uUNIT, 10) }
case 100000000000000000000000000000 { result := mul(uUNIT, 11) }
case 1000000000000000000000000000000 { result := mul(uUNIT, 12) }
case 10000000000000000000000000000000 { result := mul(uUNIT, 13) }
case 100000000000000000000000000000000 { result := mul(uUNIT, 14) }
case 1000000000000000000000000000000000 { result := mul(uUNIT, 15) }
case 10000000000000000000000000000000000 { result := mul(uUNIT, 16) }
case 100000000000000000000000000000000000 { result := mul(uUNIT, 17) }
case 1000000000000000000000000000000000000 { result := mul(uUNIT, 18) }
case 10000000000000000000000000000000000000 { result := mul(uUNIT, 19) }
case 100000000000000000000000000000000000000 { result := mul(uUNIT, 20) }
case 1000000000000000000000000000000000000000 { result := mul(uUNIT, 21) }
case 10000000000000000000000000000000000000000 { result := mul(uUNIT, 22) }
case 100000000000000000000000000000000000000000 { result := mul(uUNIT, 23) }
case 1000000000000000000000000000000000000000000 { result := mul(uUNIT, 24) }
case 10000000000000000000000000000000000000000000 { result := mul(uUNIT, 25) }
case 100000000000000000000000000000000000000000000 { result := mul(uUNIT, 26) }
case 1000000000000000000000000000000000000000000000 { result := mul(uUNIT, 27) }
case 10000000000000000000000000000000000000000000000 { result := mul(uUNIT, 28) }
case 100000000000000000000000000000000000000000000000 { result := mul(uUNIT, 29) }
case 1000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 30) }
case 10000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 31) }
case 100000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 32) }
case 1000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 33) }
case 10000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 34) }
case 100000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 35) }
case 1000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 36) }
case 10000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 37) }
case 100000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 38) }
case 1000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 39) }
case 10000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 40) }
case 100000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 41) }
case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 42) }
case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 43) }
case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 44) }
case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 45) }
case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 46) }
case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 47) }
case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 48) }
case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 49) }
case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 50) }
case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 51) }
case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 52) }
case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 53) }
case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 54) }
case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 55) }
case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 56) }
case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 57) }
case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 58) }
case 100000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 59) }
default { result := uMAX_UD60x18 }
}
if (result.unwrap() == uMAX_UD60x18) {
unchecked {
// Inline the fixed-point division to save gas.
result = wrap(log2(x).unwrap() * uUNIT / uLOG2_10);
}
}
}
/// @notice Calculates the binary logarithm of x using the iterative approximation algorithm:
///
/// $$
/// log_2{x} = n + log_2{y}, \text{ where } y = x*2^{-n}, \ y \in [1, 2)
/// $$
///
/// For $0 \leq x \lt 1$, the input is inverted:
///
/// $$
/// log_2{x} = -log_2{\frac{1}{x}}
/// $$
///
/// @dev See https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation
///
/// Notes:
/// - Due to the lossy precision of the iterative approximation, the results are not perfectly accurate to the last decimal.
///
/// Requirements:
/// - x ≥ UNIT
///
/// @param x The UD60x18 number for which to calculate the binary logarithm.
/// @return result The binary logarithm as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function log2(UD60x18 x) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
if (xUint < uUNIT) {
revert Errors.PRBMath_UD60x18_Log_InputTooSmall(x);
}
unchecked {
// Calculate the integer part of the logarithm.
uint256 n = Common.msb(xUint / uUNIT);
// This is the integer part of the logarithm as a UD60x18 number. The operation can't overflow because n
// n is at most 255 and UNIT is 1e18.
uint256 resultUint = n * uUNIT;
// Calculate $y = x * 2^{-n}$.
uint256 y = xUint >> n;
// If y is the unit number, the fractional part is zero.
if (y == uUNIT) {
return wrap(resultUint);
}
// Calculate the fractional part via the iterative approximation.
// The `delta >>= 1` part is equivalent to `delta /= 2`, but shifting bits is more gas efficient.
uint256 DOUBLE_UNIT = 2e18;
for (uint256 delta = uHALF_UNIT; delta > 0; delta >>= 1) {
y = (y * y) / uUNIT;
// Is y^2 >= 2e18 and so in the range [2e18, 4e18)?
if (y >= DOUBLE_UNIT) {
// Add the 2^{-m} factor to the logarithm.
resultUint += delta;
// Halve y, which corresponds to z/2 in the Wikipedia article.
y >>= 1;
}
}
result = wrap(resultUint);
}
}
/// @notice Multiplies two UD60x18 numbers together, returning a new UD60x18 number.
///
/// @dev Uses {Common.mulDiv} to enable overflow-safe multiplication and division.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv}.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv}.
///
/// @dev See the documentation in {Common.mulDiv18}.
/// @param x The multiplicand as a UD60x18 number.
/// @param y The multiplier as a UD60x18 number.
/// @return result The product as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function mul(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
result = wrap(Common.mulDiv18(x.unwrap(), y.unwrap()));
}
/// @notice Raises x to the power of y.
///
/// For $1 \leq x \leq \infty$, the following standard formula is used:
///
/// $$
/// x^y = 2^{log_2{x} * y}
/// $$
///
/// For $0 \leq x \lt 1$, since the unsigned {log2} is undefined, an equivalent formula is used:
///
/// $$
/// i = \frac{1}{x}
/// w = 2^{log_2{i} * y}
/// x^y = \frac{1}{w}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {log2} and {mul}.
/// - Returns `UNIT` for 0^0.
/// - It may not perform well with very small values of x. Consider using SD59x18 as an alternative.
///
/// Requirements:
/// - Refer to the requirements in {exp2}, {log2}, and {mul}.
///
/// @param x The base as a UD60x18 number.
/// @param y The exponent as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function pow(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
uint256 yUint = y.unwrap();
// If both x and y are zero, the result is `UNIT`. If just x is zero, the result is always zero.
if (xUint == 0) {
return yUint == 0 ? UNIT : ZERO;
}
// If x is `UNIT`, the result is always `UNIT`.
else if (xUint == uUNIT) {
return UNIT;
}
// If y is zero, the result is always `UNIT`.
if (yUint == 0) {
return UNIT;
}
// If y is `UNIT`, the result is always x.
else if (yUint == uUNIT) {
return x;
}
// If x is > UNIT, use the standard formula.
if (xUint > uUNIT) {
result = exp2(mul(log2(x), y));
}
// Conversely, if x < UNIT, use the equivalent formula.
else {
UD60x18 i = wrap(uUNIT_SQUARED / xUint);
UD60x18 w = exp2(mul(log2(i), y));
result = wrap(uUNIT_SQUARED / w.unwrap());
}
}
/// @notice Raises x (a UD60x18 number) to the power y (an unsigned basic integer) using the well-known
/// algorithm "exponentiation by squaring".
///
/// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv18}.
/// - Returns `UNIT` for 0^0.
///
/// Requirements:
/// - The result must fit in UD60x18.
///
/// @param x The base as a UD60x18 number.
/// @param y The exponent as a uint256.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function powu(UD60x18 x, uint256 y) pure returns (UD60x18 result) {
// Calculate the first iteration of the loop in advance.
uint256 xUint = x.unwrap();
uint256 resultUint = y & 1 > 0 ? xUint : uUNIT;
// Equivalent to `for(y /= 2; y > 0; y /= 2)`.
for (y >>= 1; y > 0; y >>= 1) {
xUint = Common.mulDiv18(xUint, xUint);
// Equivalent to `y % 2 == 1`.
if (y & 1 > 0) {
resultUint = Common.mulDiv18(resultUint, xUint);
}
}
result = wrap(resultUint);
}
/// @notice Calculates the square root of x using the Babylonian method.
///
/// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x ≤ MAX_UD60x18 / UNIT
///
/// @param x The UD60x18 number for which to calculate the square root.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function sqrt(UD60x18 x) pure returns (UD60x18 result) {
uint256 xUint = x.unwrap();
unchecked {
if (xUint > uMAX_UD60x18 / uUNIT) {
revert Errors.PRBMath_UD60x18_Sqrt_Overflow(x);
}
// Multiply x by `UNIT` to account for the factor of `UNIT` picked up when multiplying two UD60x18 numbers.
// In this case, the two numbers are both the square root.
result = wrap(Common.sqrt(xUint * uUNIT));
}
}// 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
pragma solidity >=0.8.19;
import "../Common.sol" as Common;
import "./Errors.sol" as Errors;
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { UD2x18 } from "./ValueType.sol";
/// @notice Casts a UD2x18 number into SD59x18.
/// @dev There is no overflow check because UD2x18 ⊆ SD59x18.
function intoSD59x18(UD2x18 x) pure returns (SD59x18 result) {
result = SD59x18.wrap(int256(uint256(UD2x18.unwrap(x))));
}
/// @notice Casts a UD2x18 number into UD60x18.
/// @dev There is no overflow check because UD2x18 ⊆ UD60x18.
function intoUD60x18(UD2x18 x) pure returns (UD60x18 result) {
result = UD60x18.wrap(UD2x18.unwrap(x));
}
/// @notice Casts a UD2x18 number into uint128.
/// @dev There is no overflow check because UD2x18 ⊆ uint128.
function intoUint128(UD2x18 x) pure returns (uint128 result) {
result = uint128(UD2x18.unwrap(x));
}
/// @notice Casts a UD2x18 number into uint256.
/// @dev There is no overflow check because UD2x18 ⊆ uint256.
function intoUint256(UD2x18 x) pure returns (uint256 result) {
result = uint256(UD2x18.unwrap(x));
}
/// @notice Casts a UD2x18 number into uint40.
/// @dev Requirements:
/// - x ≤ MAX_UINT40
function intoUint40(UD2x18 x) pure returns (uint40 result) {
uint64 xUint = UD2x18.unwrap(x);
if (xUint > uint64(Common.MAX_UINT40)) {
revert Errors.PRBMath_UD2x18_IntoUint40_Overflow(x);
}
result = uint40(xUint);
}
/// @notice Alias for {wrap}.
function ud2x18(uint64 x) pure returns (UD2x18 result) {
result = UD2x18.wrap(x);
}
/// @notice Unwrap a UD2x18 number into uint64.
function unwrap(UD2x18 x) pure returns (uint64 result) {
result = UD2x18.unwrap(x);
}
/// @notice Wraps a uint64 number into UD2x18.
function wrap(uint64 x) pure returns (UD2x18 result) {
result = UD2x18.wrap(x);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { UD2x18 } from "./ValueType.sol";
/// @notice Thrown when trying to cast a UD2x18 number that doesn't fit in uint40.
error PRBMath_UD2x18_IntoUint40_Overflow(UD2x18 x);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "../Common.sol" as Common;
import "./Errors.sol" as CastingErrors;
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { SD1x18 } from "./ValueType.sol";
/// @notice Casts an SD1x18 number into SD59x18.
/// @dev There is no overflow check because SD1x18 ⊆ SD59x18.
function intoSD59x18(SD1x18 x) pure returns (SD59x18 result) {
result = SD59x18.wrap(int256(SD1x18.unwrap(x)));
}
/// @notice Casts an SD1x18 number into UD60x18.
/// @dev Requirements:
/// - x ≥ 0
function intoUD60x18(SD1x18 x) pure returns (UD60x18 result) {
int64 xInt = SD1x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD1x18_ToUD60x18_Underflow(x);
}
result = UD60x18.wrap(uint64(xInt));
}
/// @notice Casts an SD1x18 number into uint128.
/// @dev Requirements:
/// - x ≥ 0
function intoUint128(SD1x18 x) pure returns (uint128 result) {
int64 xInt = SD1x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD1x18_ToUint128_Underflow(x);
}
result = uint128(uint64(xInt));
}
/// @notice Casts an SD1x18 number into uint256.
/// @dev Requirements:
/// - x ≥ 0
function intoUint256(SD1x18 x) pure returns (uint256 result) {
int64 xInt = SD1x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD1x18_ToUint256_Underflow(x);
}
result = uint256(uint64(xInt));
}
/// @notice Casts an SD1x18 number into uint40.
/// @dev Requirements:
/// - x ≥ 0
/// - x ≤ MAX_UINT40
function intoUint40(SD1x18 x) pure returns (uint40 result) {
int64 xInt = SD1x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD1x18_ToUint40_Underflow(x);
}
if (xInt > int64(uint64(Common.MAX_UINT40))) {
revert CastingErrors.PRBMath_SD1x18_ToUint40_Overflow(x);
}
result = uint40(uint64(xInt));
}
/// @notice Alias for {wrap}.
function sd1x18(int64 x) pure returns (SD1x18 result) {
result = SD1x18.wrap(x);
}
/// @notice Unwraps an SD1x18 number into int64.
function unwrap(SD1x18 x) pure returns (int64 result) {
result = SD1x18.unwrap(x);
}
/// @notice Wraps an int64 number into SD1x18.
function wrap(int64 x) pure returns (SD1x18 result) {
result = SD1x18.wrap(x);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "../Common.sol" as Common;
import "./Errors.sol" as CastingErrors;
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { SD21x18 } from "./ValueType.sol";
/// @notice Casts an SD21x18 number into SD59x18.
/// @dev There is no overflow check because SD21x18 ⊆ SD59x18.
function intoSD59x18(SD21x18 x) pure returns (SD59x18 result) {
result = SD59x18.wrap(int256(SD21x18.unwrap(x)));
}
/// @notice Casts an SD21x18 number into UD60x18.
/// @dev Requirements:
/// - x ≥ 0
function intoUD60x18(SD21x18 x) pure returns (UD60x18 result) {
int128 xInt = SD21x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD21x18_ToUD60x18_Underflow(x);
}
result = UD60x18.wrap(uint128(xInt));
}
/// @notice Casts an SD21x18 number into uint128.
/// @dev Requirements:
/// - x ≥ 0
function intoUint128(SD21x18 x) pure returns (uint128 result) {
int128 xInt = SD21x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD21x18_ToUint128_Underflow(x);
}
result = uint128(xInt);
}
/// @notice Casts an SD21x18 number into uint256.
/// @dev Requirements:
/// - x ≥ 0
function intoUint256(SD21x18 x) pure returns (uint256 result) {
int128 xInt = SD21x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD21x18_ToUint256_Underflow(x);
}
result = uint256(uint128(xInt));
}
/// @notice Casts an SD21x18 number into uint40.
/// @dev Requirements:
/// - x ≥ 0
/// - x ≤ MAX_UINT40
function intoUint40(SD21x18 x) pure returns (uint40 result) {
int128 xInt = SD21x18.unwrap(x);
if (xInt < 0) {
revert CastingErrors.PRBMath_SD21x18_ToUint40_Underflow(x);
}
if (xInt > int128(uint128(Common.MAX_UINT40))) {
revert CastingErrors.PRBMath_SD21x18_ToUint40_Overflow(x);
}
result = uint40(uint128(xInt));
}
/// @notice Alias for {wrap}.
function sd21x18(int128 x) pure returns (SD21x18 result) {
result = SD21x18.wrap(x);
}
/// @notice Unwraps an SD21x18 number into int128.
function unwrap(SD21x18 x) pure returns (int128 result) {
result = SD21x18.unwrap(x);
}
/// @notice Wraps an int128 number into SD21x18.
function wrap(int128 x) pure returns (SD21x18 result) {
result = SD21x18.wrap(x);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import "../Common.sol" as Common;
import "./Errors.sol" as Errors;
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { UD21x18 } from "./ValueType.sol";
/// @notice Casts a UD21x18 number into SD59x18.
/// @dev There is no overflow check because UD21x18 ⊆ SD59x18.
function intoSD59x18(UD21x18 x) pure returns (SD59x18 result) {
result = SD59x18.wrap(int256(uint256(UD21x18.unwrap(x))));
}
/// @notice Casts a UD21x18 number into UD60x18.
/// @dev There is no overflow check because UD21x18 ⊆ UD60x18.
function intoUD60x18(UD21x18 x) pure returns (UD60x18 result) {
result = UD60x18.wrap(UD21x18.unwrap(x));
}
/// @notice Casts a UD21x18 number into uint128.
/// @dev This is basically an alias for {unwrap}.
function intoUint128(UD21x18 x) pure returns (uint128 result) {
result = UD21x18.unwrap(x);
}
/// @notice Casts a UD21x18 number into uint256.
/// @dev There is no overflow check because UD21x18 ⊆ uint256.
function intoUint256(UD21x18 x) pure returns (uint256 result) {
result = uint256(UD21x18.unwrap(x));
}
/// @notice Casts a UD21x18 number into uint40.
/// @dev Requirements:
/// - x ≤ MAX_UINT40
function intoUint40(UD21x18 x) pure returns (uint40 result) {
uint128 xUint = UD21x18.unwrap(x);
if (xUint > uint128(Common.MAX_UINT40)) {
revert Errors.PRBMath_UD21x18_IntoUint40_Overflow(x);
}
result = uint40(xUint);
}
/// @notice Alias for {wrap}.
function ud21x18(uint128 x) pure returns (UD21x18 result) {
result = UD21x18.wrap(x);
}
/// @notice Unwrap a UD21x18 number into uint128.
function unwrap(UD21x18 x) pure returns (uint128 result) {
result = UD21x18.unwrap(x);
}
/// @notice Wraps a uint128 number into UD21x18.
function wrap(uint128 x) pure returns (UD21x18 result) {
result = UD21x18.wrap(x);
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
// Common.sol
//
// Common mathematical functions used in both SD59x18 and UD60x18. Note that these global functions do not
// always operate with SD59x18 and UD60x18 numbers.
/*//////////////////////////////////////////////////////////////////////////
CUSTOM ERRORS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Thrown when the resultant value in {mulDiv} overflows uint256.
error PRBMath_MulDiv_Overflow(uint256 x, uint256 y, uint256 denominator);
/// @notice Thrown when the resultant value in {mulDiv18} overflows uint256.
error PRBMath_MulDiv18_Overflow(uint256 x, uint256 y);
/// @notice Thrown when one of the inputs passed to {mulDivSigned} is `type(int256).min`.
error PRBMath_MulDivSigned_InputTooSmall();
/// @notice Thrown when the resultant value in {mulDivSigned} overflows int256.
error PRBMath_MulDivSigned_Overflow(int256 x, int256 y);
/*//////////////////////////////////////////////////////////////////////////
CONSTANTS
//////////////////////////////////////////////////////////////////////////*/
/// @dev The maximum value a uint128 number can have.
uint128 constant MAX_UINT128 = type(uint128).max;
/// @dev The maximum value a uint40 number can have.
uint40 constant MAX_UINT40 = type(uint40).max;
/// @dev The maximum value a uint64 number can have.
uint64 constant MAX_UINT64 = type(uint64).max;
/// @dev The unit number, which the decimal precision of the fixed-point types.
uint256 constant UNIT = 1e18;
/// @dev The unit number inverted mod 2^256.
uint256 constant UNIT_INVERSE = 78156646155174841979727994598816262306175212592076161876661_508869554232690281;
/// @dev The the largest power of two that divides the decimal value of `UNIT`. The logarithm of this value is the least significant
/// bit in the binary representation of `UNIT`.
uint256 constant UNIT_LPOTD = 262144;
/*//////////////////////////////////////////////////////////////////////////
FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/
/// @notice Calculates the binary exponent of x using the binary fraction method.
/// @dev Has to use 192.64-bit fixed-point numbers. See https://ethereum.stackexchange.com/a/96594/24693.
/// @param x The exponent as an unsigned 192.64-bit fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
/// @custom:smtchecker abstract-function-nondet
function exp2(uint256 x) pure returns (uint256 result) {
unchecked {
// Start from 0.5 in the 192.64-bit fixed-point format.
result = 0x800000000000000000000000000000000000000000000000;
// The following logic multiplies the result by $\sqrt{2^{-i}}$ when the bit at position i is 1. Key points:
//
// 1. Intermediate results will not overflow, as the starting point is 2^191 and all magic factors are under 2^65.
// 2. The rationale for organizing the if statements into groups of 8 is gas savings. If the result of performing
// a bitwise AND operation between x and any value in the array [0x80; 0x40; 0x20; 0x10; 0x08; 0x04; 0x02; 0x01] is 1,
// we know that `x & 0xFF` is also 1.
if (x & 0xFF00000000000000 > 0) {
if (x & 0x8000000000000000 > 0) {
result = (result * 0x16A09E667F3BCC909) >> 64;
}
if (x & 0x4000000000000000 > 0) {
result = (result * 0x1306FE0A31B7152DF) >> 64;
}
if (x & 0x2000000000000000 > 0) {
result = (result * 0x1172B83C7D517ADCE) >> 64;
}
if (x & 0x1000000000000000 > 0) {
result = (result * 0x10B5586CF9890F62A) >> 64;
}
if (x & 0x800000000000000 > 0) {
result = (result * 0x1059B0D31585743AE) >> 64;
}
if (x & 0x400000000000000 > 0) {
result = (result * 0x102C9A3E778060EE7) >> 64;
}
if (x & 0x200000000000000 > 0) {
result = (result * 0x10163DA9FB33356D8) >> 64;
}
if (x & 0x100000000000000 > 0) {
result = (result * 0x100B1AFA5ABCBED61) >> 64;
}
}
if (x & 0xFF000000000000 > 0) {
if (x & 0x80000000000000 > 0) {
result = (result * 0x10058C86DA1C09EA2) >> 64;
}
if (x & 0x40000000000000 > 0) {
result = (result * 0x1002C605E2E8CEC50) >> 64;
}
if (x & 0x20000000000000 > 0) {
result = (result * 0x100162F3904051FA1) >> 64;
}
if (x & 0x10000000000000 > 0) {
result = (result * 0x1000B175EFFDC76BA) >> 64;
}
if (x & 0x8000000000000 > 0) {
result = (result * 0x100058BA01FB9F96D) >> 64;
}
if (x & 0x4000000000000 > 0) {
result = (result * 0x10002C5CC37DA9492) >> 64;
}
if (x & 0x2000000000000 > 0) {
result = (result * 0x1000162E525EE0547) >> 64;
}
if (x & 0x1000000000000 > 0) {
result = (result * 0x10000B17255775C04) >> 64;
}
}
if (x & 0xFF0000000000 > 0) {
if (x & 0x800000000000 > 0) {
result = (result * 0x1000058B91B5BC9AE) >> 64;
}
if (x & 0x400000000000 > 0) {
result = (result * 0x100002C5C89D5EC6D) >> 64;
}
if (x & 0x200000000000 > 0) {
result = (result * 0x10000162E43F4F831) >> 64;
}
if (x & 0x100000000000 > 0) {
result = (result * 0x100000B1721BCFC9A) >> 64;
}
if (x & 0x80000000000 > 0) {
result = (result * 0x10000058B90CF1E6E) >> 64;
}
if (x & 0x40000000000 > 0) {
result = (result * 0x1000002C5C863B73F) >> 64;
}
if (x & 0x20000000000 > 0) {
result = (result * 0x100000162E430E5A2) >> 64;
}
if (x & 0x10000000000 > 0) {
result = (result * 0x1000000B172183551) >> 64;
}
}
if (x & 0xFF00000000 > 0) {
if (x & 0x8000000000 > 0) {
result = (result * 0x100000058B90C0B49) >> 64;
}
if (x & 0x4000000000 > 0) {
result = (result * 0x10000002C5C8601CC) >> 64;
}
if (x & 0x2000000000 > 0) {
result = (result * 0x1000000162E42FFF0) >> 64;
}
if (x & 0x1000000000 > 0) {
result = (result * 0x10000000B17217FBB) >> 64;
}
if (x & 0x800000000 > 0) {
result = (result * 0x1000000058B90BFCE) >> 64;
}
if (x & 0x400000000 > 0) {
result = (result * 0x100000002C5C85FE3) >> 64;
}
if (x & 0x200000000 > 0) {
result = (result * 0x10000000162E42FF1) >> 64;
}
if (x & 0x100000000 > 0) {
result = (result * 0x100000000B17217F8) >> 64;
}
}
if (x & 0xFF000000 > 0) {
if (x & 0x80000000 > 0) {
result = (result * 0x10000000058B90BFC) >> 64;
}
if (x & 0x40000000 > 0) {
result = (result * 0x1000000002C5C85FE) >> 64;
}
if (x & 0x20000000 > 0) {
result = (result * 0x100000000162E42FF) >> 64;
}
if (x & 0x10000000 > 0) {
result = (result * 0x1000000000B17217F) >> 64;
}
if (x & 0x8000000 > 0) {
result = (result * 0x100000000058B90C0) >> 64;
}
if (x & 0x4000000 > 0) {
result = (result * 0x10000000002C5C860) >> 64;
}
if (x & 0x2000000 > 0) {
result = (result * 0x1000000000162E430) >> 64;
}
if (x & 0x1000000 > 0) {
result = (result * 0x10000000000B17218) >> 64;
}
}
if (x & 0xFF0000 > 0) {
if (x & 0x800000 > 0) {
result = (result * 0x1000000000058B90C) >> 64;
}
if (x & 0x400000 > 0) {
result = (result * 0x100000000002C5C86) >> 64;
}
if (x & 0x200000 > 0) {
result = (result * 0x10000000000162E43) >> 64;
}
if (x & 0x100000 > 0) {
result = (result * 0x100000000000B1721) >> 64;
}
if (x & 0x80000 > 0) {
result = (result * 0x10000000000058B91) >> 64;
}
if (x & 0x40000 > 0) {
result = (result * 0x1000000000002C5C8) >> 64;
}
if (x & 0x20000 > 0) {
result = (result * 0x100000000000162E4) >> 64;
}
if (x & 0x10000 > 0) {
result = (result * 0x1000000000000B172) >> 64;
}
}
if (x & 0xFF00 > 0) {
if (x & 0x8000 > 0) {
result = (result * 0x100000000000058B9) >> 64;
}
if (x & 0x4000 > 0) {
result = (result * 0x10000000000002C5D) >> 64;
}
if (x & 0x2000 > 0) {
result = (result * 0x1000000000000162E) >> 64;
}
if (x & 0x1000 > 0) {
result = (result * 0x10000000000000B17) >> 64;
}
if (x & 0x800 > 0) {
result = (result * 0x1000000000000058C) >> 64;
}
if (x & 0x400 > 0) {
result = (result * 0x100000000000002C6) >> 64;
}
if (x & 0x200 > 0) {
result = (result * 0x10000000000000163) >> 64;
}
if (x & 0x100 > 0) {
result = (result * 0x100000000000000B1) >> 64;
}
}
if (x & 0xFF > 0) {
if (x & 0x80 > 0) {
result = (result * 0x10000000000000059) >> 64;
}
if (x & 0x40 > 0) {
result = (result * 0x1000000000000002C) >> 64;
}
if (x & 0x20 > 0) {
result = (result * 0x10000000000000016) >> 64;
}
if (x & 0x10 > 0) {
result = (result * 0x1000000000000000B) >> 64;
}
if (x & 0x8 > 0) {
result = (result * 0x10000000000000006) >> 64;
}
if (x & 0x4 > 0) {
result = (result * 0x10000000000000003) >> 64;
}
if (x & 0x2 > 0) {
result = (result * 0x10000000000000001) >> 64;
}
if (x & 0x1 > 0) {
result = (result * 0x10000000000000001) >> 64;
}
}
// In the code snippet below, two operations are executed simultaneously:
//
// 1. The result is multiplied by $(2^n + 1)$, where $2^n$ represents the integer part, and the additional 1
// accounts for the initial guess of 0.5. This is achieved by subtracting from 191 instead of 192.
// 2. The result is then converted to an unsigned 60.18-decimal fixed-point format.
//
// The underlying logic is based on the relationship $2^{191-ip} = 2^{ip} / 2^{191}$, where $ip$ denotes the,
// integer part, $2^n$.
result *= UNIT;
result >>= (191 - (x >> 64));
}
}
/// @notice Finds the zero-based index of the first 1 in the binary representation of x.
///
/// @dev See the note on "msb" in this Wikipedia article: https://en.wikipedia.org/wiki/Find_first_set
///
/// Each step in this implementation is equivalent to this high-level code:
///
/// ```solidity
/// if (x >= 2 ** 128) {
/// x >>= 128;
/// result += 128;
/// }
/// ```
///
/// Where 128 is replaced with each respective power of two factor. See the full high-level implementation here:
/// https://gist.github.com/PaulRBerg/f932f8693f2733e30c4d479e8e980948
///
/// The Yul instructions used below are:
///
/// - "gt" is "greater than"
/// - "or" is the OR bitwise operator
/// - "shl" is "shift left"
/// - "shr" is "shift right"
///
/// @param x The uint256 number for which to find the index of the most significant bit.
/// @return result The index of the most significant bit as a uint256.
/// @custom:smtchecker abstract-function-nondet
function msb(uint256 x) pure returns (uint256 result) {
// 2^128
assembly ("memory-safe") {
let factor := shl(7, gt(x, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF))
x := shr(factor, x)
result := or(result, factor)
}
// 2^64
assembly ("memory-safe") {
let factor := shl(6, gt(x, 0xFFFFFFFFFFFFFFFF))
x := shr(factor, x)
result := or(result, factor)
}
// 2^32
assembly ("memory-safe") {
let factor := shl(5, gt(x, 0xFFFFFFFF))
x := shr(factor, x)
result := or(result, factor)
}
// 2^16
assembly ("memory-safe") {
let factor := shl(4, gt(x, 0xFFFF))
x := shr(factor, x)
result := or(result, factor)
}
// 2^8
assembly ("memory-safe") {
let factor := shl(3, gt(x, 0xFF))
x := shr(factor, x)
result := or(result, factor)
}
// 2^4
assembly ("memory-safe") {
let factor := shl(2, gt(x, 0xF))
x := shr(factor, x)
result := or(result, factor)
}
// 2^2
assembly ("memory-safe") {
let factor := shl(1, gt(x, 0x3))
x := shr(factor, x)
result := or(result, factor)
}
// 2^1
// No need to shift x any more.
assembly ("memory-safe") {
let factor := gt(x, 0x1)
result := or(result, factor)
}
}
/// @notice Calculates x*y÷denominator with 512-bit precision.
///
/// @dev Credits to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv.
///
/// Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - The denominator must not be zero.
/// - The result must fit in uint256.
///
/// @param x The multiplicand as a uint256.
/// @param y The multiplier as a uint256.
/// @param denominator The divisor as a uint256.
/// @return result The result as a uint256.
/// @custom:smtchecker abstract-function-nondet
function mulDiv(uint256 x, uint256 y, uint256 denominator) pure returns (uint256 result) {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512-bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly ("memory-safe") {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
unchecked {
return prod0 / denominator;
}
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
if (prod1 >= denominator) {
revert PRBMath_MulDiv_Overflow(x, y, denominator);
}
////////////////////////////////////////////////////////////////////////////
// 512 by 256 division
////////////////////////////////////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly ("memory-safe") {
// Compute remainder using the mulmod Yul instruction.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512-bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
unchecked {
// Calculate the largest power of two divisor of the denominator using the unary operator ~. This operation cannot overflow
// because the denominator cannot be zero at this point in the function execution. The result is always >= 1.
// For more detail, see https://cs.stackexchange.com/q/138556/92363.
uint256 lpotdod = denominator & (~denominator + 1);
uint256 flippedLpotdod;
assembly ("memory-safe") {
// Factor powers of two out of denominator.
denominator := div(denominator, lpotdod)
// Divide [prod1 prod0] by lpotdod.
prod0 := div(prod0, lpotdod)
// Get the flipped value `2^256 / lpotdod`. If the `lpotdod` is zero, the flipped value is one.
// `sub(0, lpotdod)` produces the two's complement version of `lpotdod`, which is equivalent to flipping all the bits.
// However, `div` interprets this value as an unsigned value: https://ethereum.stackexchange.com/q/147168/24693
flippedLpotdod := add(div(sub(0, lpotdod), lpotdod), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * flippedLpotdod;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
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 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// 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 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
}
}
/// @notice Calculates x*y÷1e18 with 512-bit precision.
///
/// @dev A variant of {mulDiv} with constant folding, i.e. in which the denominator is hard coded to 1e18.
///
/// Notes:
/// - The body is purposely left uncommented; to understand how this works, see the documentation in {mulDiv}.
/// - The result is rounded toward zero.
/// - We take as an axiom that the result cannot be `MAX_UINT256` when x and y solve the following system of equations:
///
/// $$
/// \begin{cases}
/// x * y = MAX\_UINT256 * UNIT \\
/// (x * y) \% UNIT \geq \frac{UNIT}{2}
/// \end{cases}
/// $$
///
/// Requirements:
/// - Refer to the requirements in {mulDiv}.
/// - The result must fit in uint256.
///
/// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number.
/// @param y The multiplier as an unsigned 60.18-decimal fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
/// @custom:smtchecker abstract-function-nondet
function mulDiv18(uint256 x, uint256 y) pure returns (uint256 result) {
uint256 prod0;
uint256 prod1;
assembly ("memory-safe") {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
if (prod1 == 0) {
unchecked {
return prod0 / UNIT;
}
}
if (prod1 >= UNIT) {
revert PRBMath_MulDiv18_Overflow(x, y);
}
uint256 remainder;
assembly ("memory-safe") {
remainder := mulmod(x, y, UNIT)
result :=
mul(
or(
div(sub(prod0, remainder), UNIT_LPOTD),
mul(sub(prod1, gt(remainder, prod0)), add(div(sub(0, UNIT_LPOTD), UNIT_LPOTD), 1))
),
UNIT_INVERSE
)
}
}
/// @notice Calculates x*y÷denominator with 512-bit precision.
///
/// @dev This is an extension of {mulDiv} for signed numbers, which works by computing the signs and the absolute values separately.
///
/// Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - Refer to the requirements in {mulDiv}.
/// - None of the inputs can be `type(int256).min`.
/// - The result must fit in int256.
///
/// @param x The multiplicand as an int256.
/// @param y The multiplier as an int256.
/// @param denominator The divisor as an int256.
/// @return result The result as an int256.
/// @custom:smtchecker abstract-function-nondet
function mulDivSigned(int256 x, int256 y, int256 denominator) pure returns (int256 result) {
if (x == type(int256).min || y == type(int256).min || denominator == type(int256).min) {
revert PRBMath_MulDivSigned_InputTooSmall();
}
// Get hold of the absolute values of x, y and the denominator.
uint256 xAbs;
uint256 yAbs;
uint256 dAbs;
unchecked {
xAbs = x < 0 ? uint256(-x) : uint256(x);
yAbs = y < 0 ? uint256(-y) : uint256(y);
dAbs = denominator < 0 ? uint256(-denominator) : uint256(denominator);
}
// Compute the absolute value of x*y÷denominator. The result must fit in int256.
uint256 resultAbs = mulDiv(xAbs, yAbs, dAbs);
if (resultAbs > uint256(type(int256).max)) {
revert PRBMath_MulDivSigned_Overflow(x, y);
}
// Get the signs of x, y and the denominator.
uint256 sx;
uint256 sy;
uint256 sd;
assembly ("memory-safe") {
// "sgt" is the "signed greater than" assembly instruction and "sub(0,1)" is -1 in two's complement.
sx := sgt(x, sub(0, 1))
sy := sgt(y, sub(0, 1))
sd := sgt(denominator, sub(0, 1))
}
// XOR over sx, sy and sd. What this does is to check whether there are 1 or 3 negative signs in the inputs.
// If there are, the result should be negative. Otherwise, it should be positive.
unchecked {
result = sx ^ sy ^ sd == 0 ? -int256(resultAbs) : int256(resultAbs);
}
}
/// @notice Calculates the square root of x using the Babylonian method.
///
/// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Notes:
/// - If x is not a perfect square, the result is rounded down.
/// - Credits to OpenZeppelin for the explanations in comments below.
///
/// @param x The uint256 number for which to calculate the square root.
/// @return result The result as a uint256.
/// @custom:smtchecker abstract-function-nondet
function sqrt(uint256 x) pure returns (uint256 result) {
if (x == 0) {
return 0;
}
// For our first guess, we calculate the biggest power of 2 which is smaller than the square root of x.
//
// We know that the "msb" (most significant bit) of x is a power of 2 such that we have:
//
// $$
// msb(x) <= x <= 2*msb(x)$
// $$
//
// We write $msb(x)$ as $2^k$, and we get:
//
// $$
// k = log_2(x)
// $$
//
// Thus, we can write the initial inequality as:
//
// $$
// 2^{log_2(x)} <= x <= 2*2^{log_2(x)+1} \\
// sqrt(2^k) <= sqrt(x) < sqrt(2^{k+1}) \\
// 2^{k/2} <= sqrt(x) < 2^{(k+1)/2} <= 2^{(k/2)+1}
// $$
//
// Consequently, $2^{log_2(x) /2} is a good first approximation of sqrt(x) with at least one correct bit.
uint256 xAux = uint256(x);
result = 1;
if (xAux >= 2 ** 128) {
xAux >>= 128;
result <<= 64;
}
if (xAux >= 2 ** 64) {
xAux >>= 64;
result <<= 32;
}
if (xAux >= 2 ** 32) {
xAux >>= 32;
result <<= 16;
}
if (xAux >= 2 ** 16) {
xAux >>= 16;
result <<= 8;
}
if (xAux >= 2 ** 8) {
xAux >>= 8;
result <<= 4;
}
if (xAux >= 2 ** 4) {
xAux >>= 4;
result <<= 2;
}
if (xAux >= 2 ** 2) {
result <<= 1;
}
// At this point, `result` is an estimation with at least one bit of precision. We know the true value has at
// most 128 bits, since it is the square root of a uint256. Newton's method converges quadratically (precision
// doubles at every iteration). We thus need at most 7 iteration to turn our partial result with one bit of
// precision into the expected uint128 result.
unchecked {
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
// If x is not a perfect square, round the result toward zero.
uint256 roundedResult = x / result;
if (result >= roundedResult) {
result = roundedResult;
}
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { UD21x18 } from "./ValueType.sol";
/// @dev Euler's number as a UD21x18 number.
UD21x18 constant E = UD21x18.wrap(2_718281828459045235);
/// @dev The maximum value a UD21x18 number can have.
uint128 constant uMAX_UD21x18 = 340282366920938463463_374607431768211455;
UD21x18 constant MAX_UD21x18 = UD21x18.wrap(uMAX_UD21x18);
/// @dev PI as a UD21x18 number.
UD21x18 constant PI = UD21x18.wrap(3_141592653589793238);
/// @dev The unit number, which gives the decimal precision of UD21x18.
uint256 constant uUNIT = 1e18;
UD21x18 constant UNIT = UD21x18.wrap(1e18);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { SD1x18 } from "./ValueType.sol";
/// @notice Thrown when trying to cast an SD1x18 number that doesn't fit in UD60x18.
error PRBMath_SD1x18_ToUD60x18_Underflow(SD1x18 x);
/// @notice Thrown when trying to cast an SD1x18 number that doesn't fit in uint128.
error PRBMath_SD1x18_ToUint128_Underflow(SD1x18 x);
/// @notice Thrown when trying to cast an SD1x18 number that doesn't fit in uint256.
error PRBMath_SD1x18_ToUint256_Underflow(SD1x18 x);
/// @notice Thrown when trying to cast an SD1x18 number that doesn't fit in uint40.
error PRBMath_SD1x18_ToUint40_Overflow(SD1x18 x);
/// @notice Thrown when trying to cast an SD1x18 number that doesn't fit in uint40.
error PRBMath_SD1x18_ToUint40_Underflow(SD1x18 x);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { SD21x18 } from "./ValueType.sol";
/// @notice Thrown when trying to cast an SD21x18 number that doesn't fit in uint128.
error PRBMath_SD21x18_ToUint128_Underflow(SD21x18 x);
/// @notice Thrown when trying to cast an SD21x18 number that doesn't fit in UD60x18.
error PRBMath_SD21x18_ToUD60x18_Underflow(SD21x18 x);
/// @notice Thrown when trying to cast an SD21x18 number that doesn't fit in uint256.
error PRBMath_SD21x18_ToUint256_Underflow(SD21x18 x);
/// @notice Thrown when trying to cast an SD21x18 number that doesn't fit in uint40.
error PRBMath_SD21x18_ToUint40_Overflow(SD21x18 x);
/// @notice Thrown when trying to cast an SD21x18 number that doesn't fit in uint40.
error PRBMath_SD21x18_ToUint40_Underflow(SD21x18 x);// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;
import { UD21x18 } from "./ValueType.sol";
/// @notice Thrown when trying to cast a UD21x18 number that doesn't fit in uint40.
error PRBMath_UD21x18_IntoUint40_Overflow(UD21x18 x);{
"remappings": [
"@arbitrum/=node_modules/@arbitrum/",
"@chainlink/=node_modules/@chainlink/",
"@eth-optimism/=node_modules/@eth-optimism/",
"@offchainlabs/=node_modules/@offchainlabs/",
"@openzeppelin/=node_modules/@openzeppelin/",
"@prb/=node_modules/@prb/",
"@sablier/=node_modules/@sablier/",
"@scroll-tech/=node_modules/@scroll-tech/",
"@zksync/=node_modules/@zksync/",
"forge-std/=node_modules/forge-std/",
"solady/=node_modules/solady/",
"solarray/=node_modules/solarray/"
],
"optimizer": {
"enabled": true,
"runs": 500
},
"metadata": {
"useLiteralContent": false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "shanghai",
"viaIR": true,
"libraries": {
"src/SablierLockup.sol": {
"Helpers": "0xa0a1ac47260b95d334763473b868117ef7343aa0",
"LockupMath": "0x1feb172238638897b13b69c65feb508a0a96b35d"
}
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[{"internalType":"address","name":"initialComptroller","type":"address"},{"internalType":"address","name":"initialNFTDescriptor","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"comptroller","type":"address"},{"internalType":"address","name":"caller","type":"address"}],"name":"Comptrollerable_CallerNotComptroller","type":"error"},{"inputs":[{"internalType":"address","name":"previousComptroller","type":"address"},{"internalType":"address","name":"newComptroller","type":"address"},{"internalType":"bytes4","name":"minimalInterfaceId","type":"bytes4"}],"name":"Comptrollerable_UnsupportedInterfaceId","type":"error"},{"inputs":[],"name":"DelegateCall","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"owner","type":"address"}],"name":"ERC721IncorrectOwner","type":"error"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ERC721InsufficientApproval","type":"error"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"name":"ERC721InvalidApprover","type":"error"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"ERC721InvalidOperator","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"ERC721InvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC721InvalidReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"ERC721InvalidSender","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ERC721NonexistentToken","type":"error"},{"inputs":[{"internalType":"enum Lockup.Model","name":"actualLockupModel","type":"uint8"},{"internalType":"enum Lockup.Model","name":"expectedLockupModel","type":"uint8"}],"name":"SablierLockupState_NotExpectedModel","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockupState_Null","type":"error"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"SablierLockup_AllowToHookUnsupportedInterface","type":"error"},{"inputs":[{"internalType":"uint256","name":"feePaid","type":"uint256"},{"internalType":"uint256","name":"minFeeWei","type":"uint256"}],"name":"SablierLockup_InsufficientFeePayment","type":"error"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"SablierLockup_InvalidHookSelector","type":"error"},{"inputs":[{"internalType":"address","name":"nativeToken","type":"address"}],"name":"SablierLockup_NativeTokenAlreadySet","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"SablierLockup_NotTransferable","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"},{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint128","name":"withdrawableAmount","type":"uint128"}],"name":"SablierLockup_Overdraw","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockup_StreamCanceled","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockup_StreamDepleted","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockup_StreamNotCancelable","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockup_StreamNotDepleted","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockup_StreamSettled","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"},{"internalType":"address","name":"caller","type":"address"}],"name":"SablierLockup_Unauthorized","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockup_WithdrawAmountZero","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamIdsCount","type":"uint256"},{"internalType":"uint256","name":"amountsCount","type":"uint256"}],"name":"SablierLockup_WithdrawArrayCountsNotEqual","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"SablierLockup_WithdrawToZeroAddress","type":"error"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"address","name":"to","type":"address"}],"name":"SablierLockup_WithdrawalAddressNotRecipient","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract ISablierComptroller","name":"comptroller","type":"address"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"}],"name":"AllowToHook","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_fromTokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_toTokenId","type":"uint256"}],"name":"BatchMetadataUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"streamId","type":"uint256"},{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":true,"internalType":"contract IERC20","name":"token","type":"address"},{"indexed":false,"internalType":"uint128","name":"senderAmount","type":"uint128"},{"indexed":false,"internalType":"uint128","name":"recipientAmount","type":"uint128"}],"name":"CancelLockupStream","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"streamId","type":"uint256"},{"components":[{"internalType":"address","name":"funder","type":"address"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"components":[{"internalType":"uint40","name":"start","type":"uint40"},{"internalType":"uint40","name":"end","type":"uint40"}],"internalType":"struct Lockup.Timestamps","name":"timestamps","type":"tuple"},{"internalType":"string","name":"shape","type":"string"}],"indexed":false,"internalType":"struct Lockup.CreateEventCommon","name":"commonParams","type":"tuple"},{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"UD2x18","name":"exponent","type":"uint64"},{"internalType":"uint40","name":"timestamp","type":"uint40"}],"indexed":false,"internalType":"struct LockupDynamic.Segment[]","name":"segments","type":"tuple[]"}],"name":"CreateLockupDynamicStream","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"streamId","type":"uint256"},{"components":[{"internalType":"address","name":"funder","type":"address"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"components":[{"internalType":"uint40","name":"start","type":"uint40"},{"internalType":"uint40","name":"end","type":"uint40"}],"internalType":"struct Lockup.Timestamps","name":"timestamps","type":"tuple"},{"internalType":"string","name":"shape","type":"string"}],"indexed":false,"internalType":"struct Lockup.CreateEventCommon","name":"commonParams","type":"tuple"},{"indexed":false,"internalType":"uint40","name":"cliffTime","type":"uint40"},{"components":[{"internalType":"uint128","name":"start","type":"uint128"},{"internalType":"uint128","name":"cliff","type":"uint128"}],"indexed":false,"internalType":"struct LockupLinear.UnlockAmounts","name":"unlockAmounts","type":"tuple"}],"name":"CreateLockupLinearStream","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"streamId","type":"uint256"},{"components":[{"internalType":"address","name":"funder","type":"address"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"components":[{"internalType":"uint40","name":"start","type":"uint40"},{"internalType":"uint40","name":"end","type":"uint40"}],"internalType":"struct Lockup.Timestamps","name":"timestamps","type":"tuple"},{"internalType":"string","name":"shape","type":"string"}],"indexed":false,"internalType":"struct Lockup.CreateEventCommon","name":"commonParams","type":"tuple"},{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint40","name":"timestamp","type":"uint40"}],"indexed":false,"internalType":"struct LockupTranched.Tranche[]","name":"tranches","type":"tuple[]"}],"name":"CreateLockupTranchedStream","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"streamId","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"revertData","type":"bytes"}],"name":"InvalidStreamInCancelMultiple","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"streamId","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"revertData","type":"bytes"}],"name":"InvalidWithdrawalInWithdrawMultiple","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"MetadataUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"RenounceLockupStream","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"contract ISablierComptroller","name":"oldComptroller","type":"address"},{"indexed":false,"internalType":"contract ISablierComptroller","name":"newComptroller","type":"address"}],"name":"SetComptroller","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract ISablierComptroller","name":"comptroller","type":"address"},{"indexed":true,"internalType":"contract ILockupNFTDescriptor","name":"oldNFTDescriptor","type":"address"},{"indexed":true,"internalType":"contract ILockupNFTDescriptor","name":"newNFTDescriptor","type":"address"}],"name":"SetNFTDescriptor","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract ISablierComptroller","name":"comptroller","type":"address"},{"indexed":false,"internalType":"uint256","name":"feeAmount","type":"uint256"}],"name":"TransferFeesToComptroller","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"streamId","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"contract IERC20","name":"token","type":"address"},{"indexed":false,"internalType":"uint128","name":"amount","type":"uint128"}],"name":"WithdrawFromLockupStream","type":"event"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"}],"name":"aggregateAmount","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"allowToHook","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"calls","type":"bytes[]"}],"name":"batch","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"calculateMinFeeWei","outputs":[{"internalType":"uint256","name":"minFeeWei","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"cancel","outputs":[{"internalType":"uint128","name":"refundedAmount","type":"uint128"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"streamIds","type":"uint256[]"}],"name":"cancelMultiple","outputs":[{"internalType":"uint128[]","name":"refundedAmounts","type":"uint128[]"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"comptroller","outputs":[{"internalType":"contract ISablierComptroller","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"internalType":"string","name":"shape","type":"string"}],"internalType":"struct Lockup.CreateWithDurations","name":"params","type":"tuple"},{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"UD2x18","name":"exponent","type":"uint64"},{"internalType":"uint40","name":"duration","type":"uint40"}],"internalType":"struct LockupDynamic.SegmentWithDuration[]","name":"segmentsWithDuration","type":"tuple[]"}],"name":"createWithDurationsLD","outputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"internalType":"string","name":"shape","type":"string"}],"internalType":"struct Lockup.CreateWithDurations","name":"params","type":"tuple"},{"components":[{"internalType":"uint128","name":"start","type":"uint128"},{"internalType":"uint128","name":"cliff","type":"uint128"}],"internalType":"struct LockupLinear.UnlockAmounts","name":"unlockAmounts","type":"tuple"},{"components":[{"internalType":"uint40","name":"cliff","type":"uint40"},{"internalType":"uint40","name":"total","type":"uint40"}],"internalType":"struct LockupLinear.Durations","name":"durations","type":"tuple"}],"name":"createWithDurationsLL","outputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"internalType":"string","name":"shape","type":"string"}],"internalType":"struct Lockup.CreateWithDurations","name":"params","type":"tuple"},{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint40","name":"duration","type":"uint40"}],"internalType":"struct LockupTranched.TrancheWithDuration[]","name":"tranchesWithDuration","type":"tuple[]"}],"name":"createWithDurationsLT","outputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"components":[{"internalType":"uint40","name":"start","type":"uint40"},{"internalType":"uint40","name":"end","type":"uint40"}],"internalType":"struct Lockup.Timestamps","name":"timestamps","type":"tuple"},{"internalType":"string","name":"shape","type":"string"}],"internalType":"struct Lockup.CreateWithTimestamps","name":"params","type":"tuple"},{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"UD2x18","name":"exponent","type":"uint64"},{"internalType":"uint40","name":"timestamp","type":"uint40"}],"internalType":"struct LockupDynamic.Segment[]","name":"segments","type":"tuple[]"}],"name":"createWithTimestampsLD","outputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"components":[{"internalType":"uint40","name":"start","type":"uint40"},{"internalType":"uint40","name":"end","type":"uint40"}],"internalType":"struct Lockup.Timestamps","name":"timestamps","type":"tuple"},{"internalType":"string","name":"shape","type":"string"}],"internalType":"struct Lockup.CreateWithTimestamps","name":"params","type":"tuple"},{"components":[{"internalType":"uint128","name":"start","type":"uint128"},{"internalType":"uint128","name":"cliff","type":"uint128"}],"internalType":"struct LockupLinear.UnlockAmounts","name":"unlockAmounts","type":"tuple"},{"internalType":"uint40","name":"cliffTime","type":"uint40"}],"name":"createWithTimestampsLL","outputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint128","name":"depositAmount","type":"uint128"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bool","name":"cancelable","type":"bool"},{"internalType":"bool","name":"transferable","type":"bool"},{"components":[{"internalType":"uint40","name":"start","type":"uint40"},{"internalType":"uint40","name":"end","type":"uint40"}],"internalType":"struct Lockup.Timestamps","name":"timestamps","type":"tuple"},{"internalType":"string","name":"shape","type":"string"}],"internalType":"struct Lockup.CreateWithTimestamps","name":"params","type":"tuple"},{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint40","name":"timestamp","type":"uint40"}],"internalType":"struct LockupTranched.Tranche[]","name":"tranches","type":"tuple[]"}],"name":"createWithTimestampsLT","outputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getCliffTime","outputs":[{"internalType":"uint40","name":"cliffTime","type":"uint40"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getDepositedAmount","outputs":[{"internalType":"uint128","name":"depositedAmount","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getEndTime","outputs":[{"internalType":"uint40","name":"endTime","type":"uint40"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getLockupModel","outputs":[{"internalType":"enum Lockup.Model","name":"lockupModel","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getRecipient","outputs":[{"internalType":"address","name":"recipient","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getRefundedAmount","outputs":[{"internalType":"uint128","name":"refundedAmount","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getSegments","outputs":[{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"UD2x18","name":"exponent","type":"uint64"},{"internalType":"uint40","name":"timestamp","type":"uint40"}],"internalType":"struct LockupDynamic.Segment[]","name":"segments","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getSender","outputs":[{"internalType":"address","name":"sender","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getStartTime","outputs":[{"internalType":"uint40","name":"startTime","type":"uint40"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getTranches","outputs":[{"components":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"uint40","name":"timestamp","type":"uint40"}],"internalType":"struct LockupTranched.Tranche[]","name":"tranches","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getUnderlyingToken","outputs":[{"internalType":"contract IERC20","name":"token","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getUnlockAmounts","outputs":[{"components":[{"internalType":"uint128","name":"start","type":"uint128"},{"internalType":"uint128","name":"cliff","type":"uint128"}],"internalType":"struct LockupLinear.UnlockAmounts","name":"unlockAmounts","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"getWithdrawnAmount","outputs":[{"internalType":"uint128","name":"withdrawnAmount","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"isAllowedToHook","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"isCancelable","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"isCold","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"isDepleted","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"isStream","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"isTransferable","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"isWarm","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nativeToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextStreamId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nftDescriptor","outputs":[{"internalType":"contract ILockupNFTDescriptor","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"address","name":"to","type":"address"}],"name":"recover","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"refundableAmountOf","outputs":[{"internalType":"uint128","name":"refundableAmount","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"renounce","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ISablierComptroller","name":"newComptroller","type":"address"}],"name":"setComptroller","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ILockupNFTDescriptor","name":"newNFTDescriptor","type":"address"}],"name":"setNFTDescriptor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newNativeToken","type":"address"}],"name":"setNativeToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"statusOf","outputs":[{"internalType":"enum Lockup.Status","name":"status","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"streamedAmountOf","outputs":[{"internalType":"uint128","name":"streamedAmount","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"uri","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"transferFeesToComptroller","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"wasCanceled","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint128","name":"amount","type":"uint128"}],"name":"withdraw","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"},{"internalType":"address","name":"to","type":"address"}],"name":"withdrawMax","outputs":[{"internalType":"uint128","name":"withdrawnAmount","type":"uint128"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"},{"internalType":"address","name":"newRecipient","type":"address"}],"name":"withdrawMaxAndTransfer","outputs":[{"internalType":"uint128","name":"withdrawnAmount","type":"uint128"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"streamIds","type":"uint256[]"},{"internalType":"uint128[]","name":"amounts","type":"uint128[]"}],"name":"withdrawMultiple","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"streamId","type":"uint256"}],"name":"withdrawableAmountOf","outputs":[{"internalType":"uint128","name":"withdrawableAmount","type":"uint128"}],"stateMutability":"view","type":"function"}]Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000000000008abbff7a84a2fe09f9a9b74d3bc2072399000000000000000000000000619e7f9832522edebd883482cd3d84653a050725
-----Decoded View---------------
Arg [0] : initialComptroller (address): 0x0000008ABbFf7a84a2fE09f9A9b74D3BC2072399
Arg [1] : initialNFTDescriptor (address): 0x619E7f9832522EDeBd883482Cd3d84653A050725
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000008abbff7a84a2fe09f9a9b74d3bc2072399
Arg [1] : 000000000000000000000000619e7f9832522edebd883482cd3d84653a050725
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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.