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Lattice

ERC6900Validation

Git Source

Title: ERC6900Validation

Authors: David Dada <daveproxy80@gmail.com> (https://github.com/dadadave80), Modified from ERC-6900 reference implementation (https://github.com/erc6900/reference-implementation)

ERC-6900 ERC-4337 validation facet: the EntryPoint's validateUserOp entrypoint, routing to the validation module named by the userOp signature prefix. Part of the ERC-6900 account blueprint (an alternative to the ERC-7579 ERC4337Validation facet); the two are never cut into the same account. Shares the EntryPoint configured via ERC4337ValidationLib.

Stateless delegator — logic lives in ERC6900ValidationLib; it reads the registries owned by ERC6900ModuleManagerLib and reuses the executor's validation-applicability gate.

Notes:

  • lattice-version: 0.1.0
  • lattice-source: ERC-6900

Functions

validateUserOp

ERC-4337 account validation. Only the configured EntryPoint may call.

function validateUserOp(PackedUserOperation calldata userOp, bytes32 userOpHash, uint256 missingAccountFunds)
        external
        virtual
        returns (uint256 validationData);

Parameters

NameTypeDescription
userOpPackedUserOperation
userOpHashbytes32
missingAccountFundsuint256

Returns

NameTypeDescription
validationDatauint256

exportSelectors

ERC-8153 selector export: this facet's cuttable selectors, tightly packed (4 bytes each).

Excludes exportSelectors() itself (0x0ef22643) - it is never cut into a diamond. Order matches forge inspect ERC6900Validation methodIdentifiers (alphabetical by signature); kept in exact parity by ExportSelectorsParityTest. Chunks: validateUserOp((address,uint256,bytes,bytes,bytes32,uint256,bytes32,bytes,bytes),bytes32,uint256) 0x19822f7c

 
function exportSelectors() external pure virtual returns (bytes memory selectors);

Returns

NameTypeDescription
selectorsbytes