reference-implementation/src/libraries/ModuleEntityLib.sol at develop · erc6900/reference-implementation · GitHub

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// SPDX-License-Identifier: MIT
pragma solidity^0.8.20;

import {ModuleEntity} from"../interfaces/IERC6900Account.sol";
// ModuleEntity is a packed representation of a module function
// Layout:
// 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA________________________ // Address
// 0x________________________________________BBBBBBBB________________ // Entity ID
// 0x________________________________________________0000000000000000 // unused

libraryModuleEntityLib {
function pack(addressaddr, uint32entityId) internalpurereturns (ModuleEntity) {
return ModuleEntity.wrap(bytes24(bytes20(addr)) |bytes24(uint192(entityId)));
 }

function unpack(ModuleEntity moduleEntity) internalpurereturns (addressaddr, uint32entityId) {
bytes24 underlying = ModuleEntity.unwrap(moduleEntity);
 addr =address(bytes20(underlying));
 entityId =uint32(bytes4(underlying <<160));
 }

function isEmpty(ModuleEntity moduleEntity) internalpurereturns (bool) {
return ModuleEntity.unwrap(moduleEntity) ==bytes24(0);
 }

function notEmpty(ModuleEntity moduleEntity) internalpurereturns (bool) {
return ModuleEntity.unwrap(moduleEntity) !=bytes24(0);
 }

function eq(ModuleEntity a, ModuleEntity b) internalpurereturns (bool) {
return ModuleEntity.unwrap(a) == ModuleEntity.unwrap(b);
 }

function notEq(ModuleEntity a, ModuleEntity b) internalpurereturns (bool) {
return ModuleEntity.unwrap(a) != ModuleEntity.unwrap(b);
 }
}