IB20.pause

Pauses one or more token operation classes, blocking the gated functions until each feature is unpaused.

Signature

IB20.sol

function pause(PausableFeature[] calldata features) external;

Field	Value
Selector	0xa290249c
Canonical signature	pause(uint8[])

Description

Pauses each feature in features. The call is additive: features already paused remain paused, and duplicates within the array are silent no-ops. Emits Paused(updater, features) with the exact array passed. While a feature is paused, the operations it gates revert ContractPaused(feature).

Parameters

Parameter	Description
features	One or more PausableFeature values to pause. Must be non-empty.

Reverts

• AccessControlUnauthorizedAccount(account, neededRole): caller does not hold PAUSE_ROLE.
• EmptyFeatureSet(): features.length == 0.

Access Control

PAUSE_ROLE gates this call. PAUSE_ROLE and UNPAUSE_ROLE are separate roles, so the account that pauses need not be the account that resumes.

Policy Interaction

No direct policy interaction.

Pausable Features

Value	Gates
TRANSFER	transfer, transferFrom, and memo variants
MINT	mint, mintWithMemo, and Asset batchMint
BURN	burn, burnWithMemo, and deprecated burnBlocked
SEIZE	seizeWithMemo

The ABI encodes PausableFeature as uint8, in enum order (TRANSFER = 0, MINT = 1, BURN = 2, SEIZE = 3). B20Constants.ALL_FEATURES_PAUSED (15) is the bitmask with all four set.

Example

Usage Example

// Pause MINT and BURN in one call; TRANSFER remains live.
PausableFeature[] memory features = new PausableFeature[](2);
features[0] = PausableFeature.MINT;
features[1] = PausableFeature.BURN;
IB20(target).pause(features);