43 lines
1.5 KiB
Solidity
43 lines
1.5 KiB
Solidity
// SPDX-License-Identifier: GPL-2.0-or-later
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pragma solidity >=0.5.0;
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pragma abicoder v2;
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import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol';
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import '../interfaces/ITickLens.sol';
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/// @title Tick Lens contract
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contract TickLens is ITickLens {
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/// @inheritdoc ITickLens
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function getPopulatedTicksInWord(address pool, int16 tickBitmapIndex)
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public
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view
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override
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returns (PopulatedTick[] memory populatedTicks)
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{
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// fetch bitmap
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uint256 bitmap = IUniswapV3Pool(pool).tickBitmap(tickBitmapIndex);
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// calculate the number of populated ticks
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uint256 numberOfPopulatedTicks;
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for (uint256 i = 0; i < 256; i++) {
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if (bitmap & (1 << i) > 0) numberOfPopulatedTicks++;
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}
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// fetch populated tick data
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int24 tickSpacing = IUniswapV3Pool(pool).tickSpacing();
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populatedTicks = new PopulatedTick[](numberOfPopulatedTicks);
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for (uint256 i = 0; i < 256; i++) {
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if (bitmap & (1 << i) > 0) {
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int24 populatedTick = ((int24(tickBitmapIndex) << 8) + int24(i)) * tickSpacing;
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(uint128 liquidityGross, int128 liquidityNet, , , , , , ) = IUniswapV3Pool(pool).ticks(populatedTick);
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populatedTicks[--numberOfPopulatedTicks] = PopulatedTick({
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tick: populatedTick,
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liquidityNet: liquidityNet,
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liquidityGross: liquidityGross
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});
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}
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}
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}
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}
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