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src/TheCompact.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.27;
+
+import { ITheCompact } from "./interfaces/ITheCompact.sol";
+
+import { BatchTransfer, SplitBatchTransfer } from "./types/BatchClaims.sol";
+import { BasicTransfer, SplitTransfer } from "./types/Claims.sol";
+import { CompactCategory } from "./types/CompactCategory.sol";
+import { Lock } from "./types/Lock.sol";
+import { Scope } from "./types/Scope.sol";
+import { ResetPeriod } from "./types/ResetPeriod.sol";
+import { ForcedWithdrawalStatus } from "./types/ForcedWithdrawalStatus.sol";
+
+import { TheCompactLogic } from "./lib/TheCompactLogic.sol";
+
+import { ERC6909 } from "solady/tokens/ERC6909.sol";
+import { ISignatureTransfer } from "permit2/src/interfaces/ISignatureTransfer.sol";
+
+/**
+ * @title The Compact
+ * @custom:version 0 (early-stage proof-of-concept)
+ * @author 0age (0age.eth)
+ * @notice The Compact is an ownerless ERC6909 contract that facilitates the voluntary
+ *         formation and mediation of reusable "resource locks."
+ *         This contract has not yet been properly tested, audited, or reviewed.
+ */
+contract TheCompact is ITheCompact, ERC6909, TheCompactLogic {
+    function deposit(address allocator) external payable returns (uint256) {
+        return _performBasicNativeTokenDeposit(allocator);
+    }
+
+    function depositAndRegister(address allocator, bytes32 claimHash, bytes32 typehash) external payable returns (uint256 id) {
+        id = _performBasicNativeTokenDeposit(allocator);
+
+        _registerWithDefaults(claimHash, typehash);
+    }
+
+    function deposit(address token, address allocator, uint256 amount) external returns (uint256) {
+        return _performBasicERC20Deposit(token, allocator, amount);
+    }
+
+    function depositAndRegister(address token, address allocator, uint256 amount, bytes32 claimHash, bytes32 typehash) external returns (uint256 id) {
+        id = _performBasicERC20Deposit(token, allocator, amount);
+
+        _registerWithDefaults(claimHash, typehash);
+    }
+
+    function deposit(address allocator, ResetPeriod resetPeriod, Scope scope, address recipient) external payable returns (uint256) {
+        return _performCustomNativeTokenDeposit(allocator, resetPeriod, scope, recipient);
+    }
+
+    function deposit(address token, address allocator, ResetPeriod resetPeriod, Scope scope, uint256 amount, address recipient) external returns (uint256) {
+        return _performCustomERC20Deposit(token, allocator, resetPeriod, scope, amount, recipient);
+    }
+
+    function deposit(uint256[2][] calldata idsAndAmounts, address recipient) external payable returns (bool) {
+        _processBatchDeposit(idsAndAmounts, recipient);
+
+        return true;
+    }
+
+    function depositAndRegister(uint256[2][] calldata idsAndAmounts, bytes32[2][] calldata claimHashesAndTypehashes, uint256 duration) external payable returns (bool) {
+        _processBatchDeposit(idsAndAmounts, msg.sender);
+
+        return _registerBatch(claimHashesAndTypehashes, duration);
+    }
+
+    function deposit(
+        address token,
+        uint256, // amount
+        uint256, // nonce
+        uint256, // deadline
+        address, // depositor
+        address, // allocator
+        ResetPeriod, // resetPeriod
+        Scope, //scope
+        address recipient,
+        bytes calldata signature
+    ) external returns (uint256) {
+        return _depositViaPermit2(token, recipient, signature);
+    }
+
+    function depositAndRegister(
+        address token,
+        uint256, // amount
+        uint256, // nonce
+        uint256, // deadline
+        address depositor, // also recipient
+        address, // allocator
+        ResetPeriod resetPeriod,
+        Scope, //scope
+        bytes32 claimHash,
+        CompactCategory compactCategory,
+        string calldata witness,
+        bytes calldata signature
+    ) external returns (uint256) {
+        return _depositAndRegisterViaPermit2(token, depositor, resetPeriod, claimHash, compactCategory, witness, signature);
+    }
+
+    function deposit(
+        address, // depositor
+        ISignatureTransfer.TokenPermissions[] calldata permitted,
+        uint256, // nonce
+        uint256, // deadline
+        address, // allocator
+        ResetPeriod, // resetPeriod
+        Scope, //scope
+        address recipient,
+        bytes calldata signature
+    ) external payable returns (uint256[] memory) {
+        return _depositBatchViaPermit2(permitted, recipient, signature);
+    }
+
+    function depositAndRegister(
+        address depositor,
+        ISignatureTransfer.TokenPermissions[] calldata permitted,
+        uint256, // nonce
+        uint256, // deadline
+        address, // allocator
+        ResetPeriod resetPeriod,
+        Scope, //scope
+        bytes32 claimHash,
+        CompactCategory compactCategory,
+        string calldata witness,
+        bytes calldata signature
+    ) external payable returns (uint256[] memory) {
+        return _depositBatchAndRegisterViaPermit2(depositor, permitted, resetPeriod, claimHash, compactCategory, witness, signature);
+    }
+
+    function allocatedTransfer(BasicTransfer calldata transfer) external returns (bool) {
+        return _processBasicTransfer(transfer, _release);
+    }
+
+    function allocatedWithdrawal(BasicTransfer calldata withdrawal) external returns (bool) {
+        return _processBasicTransfer(withdrawal, _withdraw);
+    }
+
+    function allocatedTransfer(SplitTransfer calldata transfer) external returns (bool) {
+        return _processSplitTransfer(transfer, _release);
+    }
+
+    function allocatedWithdrawal(SplitTransfer calldata withdrawal) external returns (bool) {
+        return _processSplitTransfer(withdrawal, _withdraw);
+    }
+
+    function allocatedTransfer(BatchTransfer calldata transfer) external returns (bool) {
+        return _processBatchTransfer(transfer, _release);
+    }
+
+    function allocatedWithdrawal(BatchTransfer calldata withdrawal) external returns (bool) {
+        return _processBatchTransfer(withdrawal, _withdraw);
+    }
+
+    function allocatedTransfer(SplitBatchTransfer calldata transfer) external returns (bool) {
+        return _processSplitBatchTransfer(transfer, _release);
+    }
+
+    function allocatedWithdrawal(SplitBatchTransfer calldata withdrawal) external returns (bool) {
+        return _processSplitBatchTransfer(withdrawal, _withdraw);
+    }
+
+    function enableForcedWithdrawal(uint256 id) external returns (uint256) {
+        return _enableForcedWithdrawal(id);
+    }
+
+    function disableForcedWithdrawal(uint256 id) external returns (bool) {
+        return _disableForcedWithdrawal(id);
+    }
+
+    function forcedWithdrawal(uint256 id, address recipient, uint256 amount) external returns (bool) {
+        return _processForcedWithdrawal(id, recipient, amount);
+    }
+
+    function register(bytes32 claimHash, bytes32 typehash, uint256 duration) external returns (bool) {
+        _register(msg.sender, claimHash, typehash, duration);
+        return true;
+    }
+
+    function getRegistrationStatus(address sponsor, bytes32 claimHash, bytes32 typehash) external view returns (bool isActive, uint256 expires) {
+        expires = _getRegistrationStatus(sponsor, claimHash, typehash);
+        isActive = expires > block.timestamp;
+    }
+
+    function register(bytes32[2][] calldata claimHashesAndTypehashes, uint256 duration) external returns (bool) {
+        return _registerBatch(claimHashesAndTypehashes, duration);
+    }
+
+    function consume(uint256[] calldata nonces) external returns (bool) {
+        return _consume(nonces);
+    }
+
+    function __registerAllocator(address allocator, bytes calldata proof) external returns (uint96) {
+        return _registerAllocator(allocator, proof);
+    }
+
+    function getForcedWithdrawalStatus(address account, uint256 id) external view returns (ForcedWithdrawalStatus, uint256) {
+        return _getForcedWithdrawalStatus(account, id);
+    }
+
+    function getLockDetails(uint256 id) external view returns (address, address, ResetPeriod, Scope) {
+        return _getLockDetails(id);
+    }
+
+    function hasConsumedAllocatorNonce(uint256 nonce, address allocator) external view returns (bool) {
+        return _hasConsumedAllocatorNonce(nonce, allocator);
+    }
+
+    function DOMAIN_SEPARATOR() external view returns (bytes32) {
+        return _domainSeparator();
+    }
+
+    /// @dev Returns the symbol for token `id`.
+    function name(uint256 id) public view virtual override returns (string memory) {
+        return _name(id);
+    }
+
+    /// @dev Returns the symbol for token `id`.
+    function symbol(uint256 id) public view virtual override returns (string memory) {
+        return _symbol(id);
+    }
+
+    /// @dev Returns the Uniform Resource Identifier (URI) for token `id`.
+    function tokenURI(uint256 id) public view virtual override returns (string memory) {
+        return _tokenURI(id);
+    }
+
+    /// @dev Returns the name for the contract.
+    function name() external pure returns (string memory) {
+        // Return the name of the contract.
+        assembly ("memory-safe") {
+            mstore(0x20, 0x20)
+            mstore(0x4b, 0x0b54686520436f6d70616374)
+            return(0x20, 0x60)
+        }
+    }
+
+    function _beforeTokenTransfer(address from, address to, uint256 id, uint256 amount) internal virtual override {
+        _ensureAttested(from, to, id, amount);
+    }
+}

src/interfaces/IAllocator.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.27;
+
+// NOTE: Allocators with smart contract implementations should also implement EIP1271.
+interface IAllocator {
+    // Called on standard transfers; must return this function selector (0x1a808f91).
+    function attest(address operator, address from, address to, uint256 id, uint256 amount) external returns (bytes4);
+}