NitroAdjudicator.sol

View Source: contracts/NitroAdjudicator.sol

↗ Extends: ForceMove, MultiAssetHolder ↘ Derived Contracts: TESTNitroAdjudicator

The NitroAdjudicator contract extends MultiAssetHolder and ForceMove

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Functions

• concludeAndTransferAllAssets
• transferAllAssets
• validTransition
• _executeExit

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concludeAndTransferAllAssets

Finalizes a channel by providing a finalization proof, and liquidates all assets for the channel.

function concludeAndTransferAllAssets(uint48 largestTurnNum, struct IForceMove.FixedPart fixedPart, bytes32 appPartHash, bytes outcomeBytes, uint8 numStates, uint8[] whoSignedWhat, struct IForceMove.Signature[] sigs) public nonpayable

Arguments

Name	Type	Description
largestTurnNum	uint48	The largest turn number of the submitted states; will overwrite the stored value of turnNumRecord.
fixedPart	struct IForceMove.FixedPart	Data describing properties of the state channel that do not change with state updates.
appPartHash	bytes32	The keccak256 of the abi.encode of (challengeDuration, appDefinition, appData). Applies to all states in the finalization proof.
outcomeBytes	bytes	abi.encode of an array of Outcome.OutcomeItem structs.
numStates	uint8	The number of states in the finalization proof.
whoSignedWhat	uint8[]	An array denoting which participant has signed which state: participant[i] signed the state with index whoSignedWhat[i].
sigs	struct IForceMove.Signature[]	Array of signatures, one for each participant, in participant order (e.g. [sig of participant[0], sig of participant[1], ...]).

transferAllAssets

Liquidates all assets for the channel

function transferAllAssets(bytes32 channelId, bytes outcomeBytes, bytes32 stateHash) public nonpayable

Arguments

Name	Type	Description
channelId	bytes32	Unique identifier for a state channel
outcomeBytes	bytes	abi.encode of an array of Outcome.OutcomeItem structs.
stateHash	bytes32	stored state hash for the channel

validTransition

Check that the submitted pair of states form a valid transition (public wrapper for internal function _requireValidTransition)

function validTransition(uint256 nParticipants, bool[2] isFinalAB, struct IForceMoveApp.VariablePart[2] ab, uint48 turnNumB, address appDefinition) public pure

returns(bool)

Returns

true if the later state is a validTransition from its predecessor, reverts otherwise.

Arguments

Name	Type	Description
nParticipants	uint256	Number of participants in the channel.
transition
isFinalAB	bool[2]	Pair of booleans denoting whether the first and second state (resp.) are final.
ab	struct IForceMoveApp.VariablePart[2]	Variable parts of each of the pair of states
turnNumB	uint48	turnNum of the later state of the pair.
appDefinition	address	Address of deployed contract containing application-specific validTransition function.

_executeExit

Executes an exit by paying out assets and calling external contracts

function _executeExit(struct ExitFormat.SingleAssetExit[] exit) internal nonpayable

Arguments

Name	Type	Description
exit	struct ExitFormat.SingleAssetExit[]	The exit to be paid out.