33 lines
1.2 KiB
Solidity
33 lines
1.2 KiB
Solidity
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
pragma solidity =0.7.6;
|
|
|
|
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Factory.sol';
|
|
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol';
|
|
|
|
import './PeripheryImmutableState.sol';
|
|
import '../interfaces/IPoolInitializer.sol';
|
|
|
|
/// @title Creates and initializes V3 Pools
|
|
abstract contract PoolInitializer is IPoolInitializer, PeripheryImmutableState {
|
|
/// @inheritdoc IPoolInitializer
|
|
function createAndInitializePoolIfNecessary(
|
|
address token0,
|
|
address token1,
|
|
uint24 fee,
|
|
uint160 sqrtPriceX96
|
|
) external payable override returns (address pool) {
|
|
require(token0 < token1);
|
|
pool = IUniswapV3Factory(factory).getPool(token0, token1, fee);
|
|
|
|
if (pool == address(0)) {
|
|
pool = IUniswapV3Factory(factory).createPool(token0, token1, fee);
|
|
IUniswapV3Pool(pool).initialize(sqrtPriceX96);
|
|
} else {
|
|
(uint160 sqrtPriceX96Existing, , , , , , ) = IUniswapV3Pool(pool).slot0();
|
|
if (sqrtPriceX96Existing == 0) {
|
|
IUniswapV3Pool(pool).initialize(sqrtPriceX96);
|
|
}
|
|
}
|
|
}
|
|
}
|