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Order
struct Order {
    uint256 id;
    uint256 amountInBaseLots;
    uint256 priceInTicks;
    uint256 prevOrderId;
    uint256 nextOrderId;
    uint256 cancelTimestamp;
    Side side;
    address owner;
}

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isExpired

isExpired
function isExpired(
    Order memory self
) internal view returns (bool)
Determines whether an order is expired by checking if its cancel timestamp is set and is less than the current block timestamp.

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isNull

isNull
function isNull(
    Order memory self
) internal pure returns (bool)
Checks if an order is null by verifying if its ID is equal to the predefined NULL_ORDER_ID.

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assertExists

assertExists
function assertExists(
    Order memory self
) internal pure
Asserts that an order exists by checking if it is not null. If the order is null, it reverts with an OrderNotFound error.