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style: Move pure functions to library and tweak some NatSpec
Also rename the deploy script
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // SPDX-License-Identifier: MIT | ||
| pragma solidity 0.8.20; | ||
|
|
||
| library LiquiditySupplyAndSwapMath { | ||
| function getPoolToken2LiquidityToAddBasedOnPoolToken1Amount( | ||
| uint256 _poolToken1Amount, | ||
| uint256 _poolToken1Reserves, | ||
| uint256 _poolToken2Reserves | ||
| ) | ||
| internal | ||
| pure | ||
| returns (uint256) | ||
| { | ||
| // p1: pool token 1 reserves, dp1: pool token 1 amount to deposit | ||
| // p2: pool token 2 reserves, dp2: pool token 2 amount to deposit | ||
| // (p1 + dp1) / (p2 + dp2) = p1 / p2 | ||
| // (p1 * p2) + (p2 * dp1) = (p1 * p2) + (p1 * dp2) | ||
| // (p2 * dp1) = (p1 * dp2) | ||
| // dp2 = (p2 * dp1) / p1 | ||
| return ((_poolToken2Reserves * _poolToken1Amount) / _poolToken1Reserves); | ||
| } | ||
|
|
||
| function getPoolToken1LiquidityToAddBasedOnPoolToken2Amount( | ||
| uint256 _poolToken2Amount, | ||
| uint256 _poolToken1Reserves, | ||
| uint256 _poolToken2Reserves | ||
| ) | ||
| internal | ||
| pure | ||
| returns (uint256) | ||
| { | ||
| // p1: pool token 1 reserves, dp1: pool token 1 amount to deposit | ||
| // p2: pool token 2 reserves, dp2: pool token 2 amount to deposit | ||
| // (p1 + dp1) / (p2 + dp2) = p1 / p2 | ||
| // (p1 * p2) + (p2 * dp1) = (p1 * p2) + (p1 * dp2) | ||
| // (p2 * dp1) = (p1 * dp2) | ||
| // dp1 = (p1 * dp2) / p2 | ||
| return ((_poolToken1Reserves * _poolToken2Amount) / _poolToken2Reserves); | ||
| } | ||
|
|
||
| function getLiquidityProviderTokensToMint( | ||
| uint256 _poolToken1AmountToDeposit, | ||
| uint256 _totalLiquidityProviderTokenSupply, | ||
| uint256 _poolToken1reserves | ||
| ) | ||
| public | ||
| pure | ||
| returns (uint256) | ||
| { | ||
| // p: pool token 1 reserves, dp: pool token 1 amount to deposit | ||
| // lp: total liquidity provider token supply | ||
| // dlp: amount of liquidity provider token to mint to the liquidity provider | ||
| // (p + dp) / (lp + dlp) = p / lp | ||
| // (p * dp) + (dp * lp) = (p * lp) + (p * dlp) | ||
| // dlp = (dp * lp) / p | ||
| return | ||
| (_poolToken1AmountToDeposit * _totalLiquidityProviderTokenSupply) / _poolToken1reserves; | ||
| } | ||
|
|
||
| function getInputBasedOnOuput( | ||
| uint256 _outputAmount, | ||
| uint256 _inputReserves, | ||
| uint256 _outputReserves, | ||
| uint256 _feeNumerator, | ||
| uint256 _feeDenominator | ||
| ) | ||
| public | ||
| pure | ||
| returns (uint256) | ||
| { | ||
| return ( | ||
| (_feeDenominator * _inputReserves * _outputAmount) | ||
| / (_feeNumerator * (_outputReserves - _outputAmount)) | ||
| ); | ||
| } | ||
|
|
||
| function getOutputBasedOnInput( | ||
| uint256 _inputAmount, | ||
| uint256 _inputReserves, | ||
| uint256 _outputReserves, | ||
| uint256 _feeNumerator, | ||
| uint256 _feeDenominator | ||
| ) | ||
| public | ||
| pure | ||
| returns (uint256) | ||
| { | ||
| return (_feeNumerator * _inputAmount * _outputReserves) | ||
| / ((_feeNumerator * _inputAmount) + (_feeDenominator * _inputReserves)); | ||
| } | ||
| } |