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Version: V3

TickBitmap

Stores a packed mapping of tick index to its initialized state

The mapping uses int16 for keys since ticks are represented as int24 and there are 256 (2^8) values per word.

Functions

flipTick

  function flipTick(
mapping(int16 => uint256) self,
int24 tick,
int24 tickSpacing
) internal

Flips the initialized state for a given tick from false to true, or vice versa

Parameters:

NameTypeDescription
selfmapping(int16 => uint256)The mapping in which to flip the tick
tickint24The tick to flip
tickSpacingint24The spacing between usable ticks

nextInitializedTickWithinOneWord

  function nextInitializedTickWithinOneWord(
mapping(int16 => uint256) self,
int24 tick,
int24 tickSpacing,
bool lte
) internal view returns (int24 next, bool initialized)

Returns the next initialized tick contained in the same word (or adjacent word) as the tick that is either to the left (less than or equal to) or right (greater than) of the given tick

Parameters:

NameTypeDescription
selfmapping(int16 => uint256)The mapping in which to compute the next initialized tick
tickint24The starting tick
tickSpacingint24The spacing between usable ticks
lteboolWhether to search for the next initialized tick to the left (less than or equal to the starting tick)

Return Values:

NameTypeDescription
nextint24The next initialized or uninitialized tick up to 256 ticks away from the current tick
initializedboolWhether the next tick is initialized, as the function only searches within up to 256 ticks