36 lines
1.8 KiB
Solidity
36 lines
1.8 KiB
Solidity
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// SPDX-License-Identifier: GPL-2.0-or-later
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pragma solidity >=0.5.0;
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/// @title Pool state that never changes
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/// @notice These parameters are fixed for a pool forever, i.e., the methods will always return the same values
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interface IUniswapV3PoolImmutables {
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/// @notice The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface
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/// @return The contract address
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function factory() external view returns (address);
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/// @notice The first of the two tokens of the pool, sorted by address
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/// @return The token contract address
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function token0() external view returns (address);
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/// @notice The second of the two tokens of the pool, sorted by address
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/// @return The token contract address
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function token1() external view returns (address);
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/// @notice The pool's fee in hundredths of a bip, i.e. 1e-6
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/// @return The fee
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function fee() external view returns (uint24);
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/// @notice The pool tick spacing
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/// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive
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/// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ...
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/// This value is an int24 to avoid casting even though it is always positive.
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/// @return The tick spacing
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function tickSpacing() external view returns (int24);
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/// @notice The maximum amount of position liquidity that can use any tick in the range
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/// @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and
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/// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool
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/// @return The max amount of liquidity per tick
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function maxLiquidityPerTick() external view returns (uint128);
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}
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