SablierLockupState

Git Source

Inherits: ISablierLockupState

See the documentation in ISablierLockupState.

State Variables

aggregateAmount

Retrieves the aggregate amount across all streams, denoted in units of the token's decimals.

If tokens are directly transferred to the contract without using the stream creation functions, the ERC-20 balance may be greater than the aggregate amount.

mapping(IERC20 token => uint256 amount) public override aggregateAmount;

nativeToken

Retrieves the address of the ERC-20 interface of the native token, if it exists.

The native tokens on some chains have a dual interface as ERC-20. For example, on Polygon the $POL token is the native token and has an ERC-20 version at 0x0000000000000000000000000000000000001010. This means that address(this).balance returns the same value as balanceOf(address(this)). To avoid any unintended behavior, these tokens cannot be used in Sablier. As an alternative, users can use the Wrapped version of the token, i.e. WMATIC, which is a standard ERC-20 token.

address public override nativeToken;

nextStreamId

Counter for stream IDs, used in the create functions.

uint256 public override nextStreamId;

nftDescriptor

Contract that generates the non-fungible token URI.

ILockupNFTDescriptor public override nftDescriptor;

_allowedToHook

Mapping of contracts allowed to hook to Sablier when a stream is canceled or when tokens are withdrawn.

mapping(address recipient => bool allowed) internal _allowedToHook;

_cliffs

Cliff timestamp mapped by stream IDs, used in LL streams.

mapping(uint256 streamId => uint40 cliffTime) internal _cliffs;

_segments

Stream segments mapped by stream IDs, used in LD streams.

mapping(uint256 streamId => LockupDynamic.Segment[] segments) internal _segments;

_streams

Lockup streams mapped by unsigned integers.

mapping(uint256 id => Lockup.Stream stream) internal _streams;

_tranches

Stream tranches mapped by stream IDs, used in LT streams.

mapping(uint256 streamId => LockupTranched.Tranche[] tranches) internal _tranches;

_unlockAmounts

Unlock amounts mapped by stream IDs, used in LL streams.

mapping(uint256 streamId => LockupLinear.UnlockAmounts unlockAmounts) internal _unlockAmounts;

Functions

notNull

Checks that streamId does not reference a null stream.

modifier notNull(uint256 streamId);

constructor

constructor(address initialNFTDescriptor);

Parameters

Name	Type	Description
initialNFTDescriptor	address	The address of the initial NFT descriptor.

getCliffTime

Retrieves the stream's cliff time, which is a Unix timestamp. A value of zero means there is no cliff.

Reverts if streamId references either a null stream or a non-LL stream.

function getCliffTime(uint256 streamId) external view override notNull(streamId) returns (uint40 cliffTime);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getDepositedAmount

Retrieves the amount deposited in the stream, denoted in units of the token's decimals.

Reverts if streamId references a null stream.

function getDepositedAmount(uint256 streamId)
    external
    view
    override
    notNull(streamId)
    returns (uint128 depositedAmount);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getEndTime

Retrieves the stream's end time, which is a Unix timestamp.

Reverts if streamId references a null stream.

function getEndTime(uint256 streamId) external view override notNull(streamId) returns (uint40 endTime);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getLockupModel

Retrieves the distribution models used to create the stream.

Reverts if streamId references a null stream.

function getLockupModel(uint256 streamId) external view override notNull(streamId) returns (Lockup.Model lockupModel);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getRefundedAmount

Retrieves the amount refunded to the sender after a cancellation, denoted in units of the token's decimals. This amount is always zero unless the stream was canceled.

Reverts if streamId references a null stream.

function getRefundedAmount(uint256 streamId)
    external
    view
    override
    notNull(streamId)
    returns (uint128 refundedAmount);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getSegments

Retrieves the segments used to compose the dynamic distribution function.

Reverts if streamId references either a null stream or a non-LD stream.

function getSegments(uint256 streamId)
    external
    view
    override
    notNull(streamId)
    returns (LockupDynamic.Segment[] memory segments);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

Returns

Name	Type	Description
segments	LockupDynamic.Segment[]	See the documentation in {LockupDynamic} type.

getSender

Retrieves the stream's sender.

Reverts if streamId references a null stream.

function getSender(uint256 streamId) external view override notNull(streamId) returns (address sender);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getStartTime

Retrieves the stream's start time, which is a Unix timestamp.

Reverts if streamId references a null stream.

function getStartTime(uint256 streamId) external view override notNull(streamId) returns (uint40 startTime);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getTranches

Retrieves the tranches used to compose the tranched distribution function.

Reverts if streamId references either a null stream or a non-LT stream.

function getTranches(uint256 streamId)
    external
    view
    override
    notNull(streamId)
    returns (LockupTranched.Tranche[] memory tranches);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

Returns

Name	Type	Description
tranches	LockupTranched.Tranche[]	See the documentation in {LockupTranched} type.

getUnderlyingToken

Retrieves the address of the underlying ERC-20 token being distributed.

Reverts if streamId references a null stream.

function getUnderlyingToken(uint256 streamId) external view override notNull(streamId) returns (IERC20 token);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

getUnlockAmounts

Retrieves the unlock amounts used to compose the linear distribution function.

Reverts if streamId references either a null stream or a non-LL stream.

function getUnlockAmounts(uint256 streamId)
    external
    view
    override
    notNull(streamId)
    returns (LockupLinear.UnlockAmounts memory unlockAmounts);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

Returns

Name	Type	Description
unlockAmounts	LockupLinear.UnlockAmounts	See the documentation in {LockupLinear} type.

getWithdrawnAmount

Retrieves the amount withdrawn from the stream, denoted in units of the token's decimals.

Reverts if streamId references a null stream.

function getWithdrawnAmount(uint256 streamId)
    external
    view
    override
    notNull(streamId)
    returns (uint128 withdrawnAmount);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

isAllowedToHook

Retrieves a flag indicating whether the provided address is a contract allowed to hook to Sablier when a stream is canceled or when tokens are withdrawn.

See ISablierLockupRecipient for more information.

function isAllowedToHook(address recipient) external view returns (bool result);

isCancelable

Retrieves a flag indicating whether the stream can be canceled. When the stream is cold, this flag is always false.

Reverts if streamId references a null stream.

function isCancelable(uint256 streamId) external view override notNull(streamId) returns (bool result);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

isDepleted

Retrieves a flag indicating whether the stream is depleted.

Reverts if streamId references a null stream.

function isDepleted(uint256 streamId) external view override notNull(streamId) returns (bool result);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

isStream

Retrieves a flag indicating whether the stream exists.

Does not revert if streamId references a null stream.

function isStream(uint256 streamId) external view override returns (bool result);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

isTransferable

Retrieves a flag indicating whether the stream NFT can be transferred.

Reverts if streamId references a null stream.

function isTransferable(uint256 streamId) external view override notNull(streamId) returns (bool result);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

wasCanceled

Retrieves a flag indicating whether the stream was canceled.

Reverts if streamId references a null stream.

function wasCanceled(uint256 streamId) external view override notNull(streamId) returns (bool result);

Parameters

Name	Type	Description
streamId	uint256	The stream ID for the query.

_statusOf

Retrieves the stream's status without performing a null check.

function _statusOf(uint256 streamId) internal view returns (Lockup.Status);

_streamedAmountOf

Calculates the streamed amount of the stream.

This function is implemented by child contract. The logic varies according to the distribution model.

function _streamedAmountOf(uint256 streamId) internal view virtual returns (uint128);

_create

This function is implemented by SablierLockup and is used in the SablierLockupDynamic, SablierLockupLinear and SablierLockupTranched contracts.

It updates state variables based on the stream parameters, mints an NFT to the recipient, bumps stream ID, and transfers the deposit amount.

function _create(
    bool cancelable,
    uint128 depositAmount,
    Lockup.Model lockupModel,
    address recipient,
    address sender,
    uint256 streamId,
    Lockup.Timestamps memory timestamps,
    IERC20 token,
    bool transferable
)
    internal
    virtual;

_notNull

A private function is used instead of inlining this logic in a modifier because Solidity copies modifiers into every function that uses them.

function _notNull(uint256 streamId) private view;