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Add Permit2Parsing lib #64

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merged 4 commits into from
Oct 9, 2024
Merged

Add Permit2Parsing lib #64

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25984f5
add Permit2Parsing lib
AgusVelez5 Oct 9, 2024
e4b5805
fix solidity version
AgusVelez5 Oct 9, 2024
59e474c
rename namings
AgusVelez5 Oct 9, 2024
a318761
add memory versions
AgusVelez5 Oct 9, 2024
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109 changes: 109 additions & 0 deletions src/libraries/PermitParsing.sol
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Original file line number Diff line number Diff line change
@@ -0,0 +1,109 @@
// SPDX-License-Identifier: Apache 2

pragma solidity ^0.8.4;

import {BytesParsing} from "wormhole-sdk/libraries/BytesParsing.sol";

library PermitParsing {
using BytesParsing for bytes;

uint constant SIGNATURE_SIZE = 65;

function asPermitUnchecked(
bytes memory params,
uint offset
) internal pure returns (uint256, uint256, bytes32, bytes32, uint8, uint) {
uint256 value;
uint256 deadline;
bytes32 r;
bytes32 s;
uint8 v;
(value, offset) = params.asUint256Unchecked(offset);
(deadline, offset) = params.asUint256Unchecked(offset);
(r, offset) = params.asBytes32Unchecked(offset);
(s, offset) = params.asBytes32Unchecked(offset);
(v, offset) = params.asUint8Unchecked(offset);
return (value, deadline, r, s, v, offset);
}

function asPermitCdUnchecked(
bytes calldata params,
uint offset
) internal pure returns (uint256, uint256, bytes32, bytes32, uint8, uint) {
uint256 value;
uint256 deadline;
bytes32 r;
bytes32 s;
uint8 v;
(value, offset) = params.asUint256CdUnchecked(offset);
(deadline, offset) = params.asUint256CdUnchecked(offset);
(r, offset) = params.asBytes32CdUnchecked(offset);
(s, offset) = params.asBytes32CdUnchecked(offset);
(v, offset) = params.asUint8CdUnchecked(offset);
return (value, deadline, r, s, v, offset);
}

function asPermit2PermitUnchecked(
bytes memory params,
uint offset
) internal pure returns (uint160, uint48, uint48, uint256, bytes memory, uint) {
uint160 amount;
uint48 expiration;
uint48 nonce;
uint256 sigDeadline;
bytes memory signature;
(amount, offset) = params.asUint160Unchecked(offset);
(expiration, offset) = params.asUint48Unchecked(offset);
(nonce, offset) = params.asUint48Unchecked(offset);
(sigDeadline, offset) = params.asUint256Unchecked(offset);
(signature, offset) = params.sliceUnchecked(offset, SIGNATURE_SIZE);
return (amount, expiration, nonce, sigDeadline, signature, offset);
}

function asPermit2PermitCdUnchecked(
bytes calldata params,
uint offset
) internal pure returns (uint160, uint48, uint48, uint256, bytes memory, uint) {
uint160 amount;
uint48 expiration;
uint48 nonce;
uint256 sigDeadline;
bytes memory signature;
(amount, offset) = params.asUint160CdUnchecked(offset);
(expiration, offset) = params.asUint48CdUnchecked(offset);
(nonce, offset) = params.asUint48CdUnchecked(offset);
(sigDeadline, offset) = params.asUint256CdUnchecked(offset);
(signature, offset) = params.sliceCdUnchecked(offset, SIGNATURE_SIZE);
return (amount, expiration, nonce, sigDeadline, signature, offset);
}

function asPermit2TransferUnchecked(
bytes memory params,
uint offset
) internal pure returns (uint256, uint256, uint256, bytes memory, uint) {
uint256 amount;
uint256 nonce;
uint256 sigDeadline;
bytes memory signature;
(amount, offset) = params.asUint256Unchecked(offset);
(nonce, offset) = params.asUint256Unchecked(offset);
(sigDeadline, offset) = params.asUint256Unchecked(offset);
(signature, offset) = params.sliceUnchecked(offset, SIGNATURE_SIZE);
return (amount, nonce, sigDeadline, signature, offset);
}

function asPermit2TransferCdUnchecked(
bytes calldata params,
uint offset
) internal pure returns (uint256, uint256, uint256, bytes memory, uint) {
uint256 amount;
uint256 nonce;
uint256 sigDeadline;
bytes memory signature;
(amount, offset) = params.asUint256CdUnchecked(offset);
(nonce, offset) = params.asUint256CdUnchecked(offset);
(sigDeadline, offset) = params.asUint256CdUnchecked(offset);
(signature, offset) = params.sliceCdUnchecked(offset, SIGNATURE_SIZE);
return (amount, nonce, sigDeadline, signature, offset);
}
}
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