From a318761418b6f72da51b6de345775059865a4f1b Mon Sep 17 00:00:00 2001
From: Agustin Velez <agustinmaurasvelez@gmail.com>
Date: Wed, 9 Oct 2024 18:04:10 -0300
Subject: [PATCH] add memory versions

---
 .../{Permit2Parsing.sol => PermitParsing.sol} | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
 rename src/libraries/{Permit2Parsing.sol => PermitParsing.sol} (53%)

diff --git a/src/libraries/Permit2Parsing.sol b/src/libraries/PermitParsing.sol
similarity index 53%
rename from src/libraries/Permit2Parsing.sol
rename to src/libraries/PermitParsing.sol
index 4a5d3a6..333b0cf 100644
--- a/src/libraries/Permit2Parsing.sol
+++ b/src/libraries/PermitParsing.sol
@@ -9,6 +9,23 @@ library PermitParsing {
 
   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
@@ -26,6 +43,23 @@ library PermitParsing {
     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
@@ -43,6 +77,21 @@ library PermitParsing {
     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