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:​

Name	Type	Description
self	mapping(int16 => uint256)	The mapping in which to flip the tick
tick	int24	The tick to flip
tickSpacing	int24	The 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:​

Name	Type	Description
self	mapping(int16 => uint256)	The mapping in which to compute the next initialized tick
tick	int24	The starting tick
tickSpacing	int24	The spacing between usable ticks
lte	bool	Whether to search for the next initialized tick to the left (less than or equal to the starting tick)

Return Values:​

Name	Type	Description
next	int24	The next initialized or uninitialized tick up to 256 ticks away from the current tick
initialized	bool	Whether the next tick is initialized, as the function only searches within up to 256 ticks