DelegationLib

DelegationData

Per-pool delegated-access state stored at a dedicated ERC-7201 slot.

Four parallel data structures maintain two enumerable mappings: selector → [delegated addresses] (for revoke-by-selector) address → [delegated selectors] (for revoke-by-address) Both directions are kept in O(1) via position tracking (1-indexed, 0 = absent).

struct DelegationData {
  mapping(bytes4 => mapping(address => uint256)) selectorToAddressPosition;
  mapping(bytes4 => address[]) selectorAddresses;
  mapping(address => bytes4[]) addressSelectors;
  mapping(address => mapping(bytes4 => uint256)) addressToSelectorPosition;
}

DelegationLib

Library for managing granular per-selector delegated write access to pool adapters.

All writes maintain two enumerable index structures so callers can enumerate delegations in either direction without iterating unpredictably large arrays.

add

function add(struct DelegationData self, bytes4 selector, address addr) internal returns (bool added)

Grants delegated write access to selector for addr.

Return Values

Name	Type	Description
added	bool	True if the pair was newly granted (false = already existed, no storage change).

remove

function remove(struct DelegationData self, bytes4 selector, address addr) internal returns (bool removed)

Revokes delegated write access to selector for addr.

Return Values

Name	Type	Description
removed	bool	True if the pair was present and removed (false = was not delegated, no storage change).

removeAllByAddress

function removeAllByAddress(struct DelegationData self, address addr) internal

Revokes all delegations previously granted to addr (e.g. compromised wallet).

Iterates the (short) list of selectors for addr and cleans up both directions.

removeAllBySelector

function removeAllBySelector(struct DelegationData self, bytes4 selector) internal

Revokes all delegations for selector (e.g. adapter being replaced by governance).

Iterates the (short) list of addresses for selector and cleans up both directions.

getAddresses

function getAddresses(struct DelegationData self, bytes4 selector) internal view returns (address[])

Returns all addresses currently delegated for selector.

getSelectors

function getSelectors(struct DelegationData self, address addr) internal view returns (bytes4[])

Returns all selectors currently delegated to addr.