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Merge pull request #19 from Uniswap/clean-up-claim-processor
Clean up claim processor
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,55 @@ | ||
| // SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.27; | ||
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| /** | ||
| * @title EventLib | ||
| * @notice Library contract implementing logic for internal functions to | ||
| * emit various events. | ||
| * @dev Note that most events are still emitted using inline logic; this | ||
| * library only implements a few events. | ||
| */ | ||
| library EventLib { | ||
| // keccak256(bytes("Claim(address,address,address,bytes32)")). | ||
| uint256 private constant _CLAIM_EVENT_SIGNATURE = 0x770c32a2314b700d6239ee35ba23a9690f2fceb93a55d8c753e953059b3b18d4; | ||
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| // keccak256(bytes("ForcedWithdrawalStatusUpdated(address,uint256,bool,uint256)")). | ||
| uint256 private constant _FORCED_WITHDRAWAL_STATUS_UPDATED_SIGNATURE = 0xe27f5e0382cf5347965fc81d5c81cd141897fe9ce402d22c496b7c2ddc84e5fd; | ||
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| /** | ||
| * @notice Internal function for emitting claim events. The sponsor and allocator | ||
| * addresses are sanitized before emission. | ||
| * @param sponsor The account sponsoring the compact that the claim is for. | ||
| * @param messageHash The EIP-712 hash of the claim message. | ||
| * @param allocator The account mediating the claim. | ||
| */ | ||
| function emitClaim(address sponsor, bytes32 messageHash, address allocator) internal { | ||
| assembly ("memory-safe") { | ||
| // Emit the Claim event: | ||
| // - topic1: Claim event signature | ||
| // - topic2: sponsor address (sanitized) | ||
| // - topic3: allocator address (sanitized) | ||
| // - topic4: caller address | ||
| // - data: messageHash | ||
| mstore(0, messageHash) | ||
| log4(0, 0x20, _CLAIM_EVENT_SIGNATURE, shr(0x60, shl(0x60, sponsor)), shr(0x60, shl(0x60, allocator)), caller()) | ||
| } | ||
| } | ||
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| /** | ||
| * @notice Internal function for emitting forced withdrawal status update events. | ||
| * @param id The ERC6909 token identifier of the resource lock. | ||
| * @param withdrawableAt The timestamp when withdrawal becomes possible. | ||
| */ | ||
| function emitForcedWithdrawalStatusUpdatedEvent(uint256 id, uint256 withdrawableAt) internal { | ||
| assembly ("memory-safe") { | ||
| // Emit ForcedWithdrawalStatusUpdated event: | ||
| // - topic1: Event signature | ||
| // - topic2: Caller address | ||
| // - topic3: Token id | ||
| // - data: [activating flag, withdrawableAt timestamp] | ||
| mstore(0, iszero(iszero(withdrawableAt))) | ||
| mstore(0x20, withdrawableAt) | ||
| log3(0, 0x40, _FORCED_WITHDRAWAL_STATUS_UPDATED_SIGNATURE, caller(), id) | ||
| } | ||
| } | ||
| } |
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