Commands.sol

// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.8.20;

// Based on https://github.com/Uniswap/universal-router/blob/main/contracts/libraries/Commands.sol

library Commands {
    bytes1 internal constant COMMAND_TYPE_MASK = 0x3f;

    /**
     * Transfers tokens from msg.sender to the Router.
     * (address token, uint256 value)
     */
    uint256 constant TRANSFER_FROM = 0x00;

    /**
     * Transfers tokens from msg.sender to the Router with a permit.
     * (address token, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s)
     */
    uint256 constant TRANSFER_FROM_WITH_PERMIT = 0x01;

    /**
     * Transfers tokens from the Router to a recipient.
     * (address token, address recipient, uint256 value)
     */
    uint256 constant TRANSFER = 0x02;

    /**
     * Performs a swap on Curve.
     * (address pool, uint256 i, uint256 j, uint256 amountIn, uint256 minAmountOut, address recipient)
     */
    uint256 constant CURVE_SWAP = 0x03;

    /**
     * Deposits an ERC20 underlying into an ERC4626 IBT
     * ibt represents the target IBT and assets represents the amount of underlying to deposit
     * (address ibt, uint256 assets, address recipient)
     */
    uint256 constant DEPOSIT_ASSET_IN_IBT = 0x04;

    /**
     * Deposits an ERC20 underlying into a PT
     * assets represents the amount of underlying to deposit
     * (address pt, uint256 assets, address ptRecipient, address ytRecipient, uint256 minShares)
     */
    uint256 constant DEPOSIT_ASSET_IN_PT = 0x05;

    /**
     * Deposits an ERC4626 IBT into a PT
     * ibts represents the amount of IBT to deposit
     * (address pt, uint256 ibts, address ptRecipient, address ytRecipient, uint256 minShares)
     */
    uint256 constant DEPOSIT_IBT_IN_PT = 0x06;

    /**
     * Redeems an ERC4626 IBT for the corresponding ERC20 underlying
     * ibt represents the target IBT and shares represents the amount of IBT to redeem
     * (address ibt, uint256 shares, address recipient)
     */
    uint256 constant REDEEM_IBT_FOR_ASSET = 0x07;

    /**
     * Redeems a PT:YT pair for the corresponding ERC20 underlying
     * shares represents the amount of PT to redeem
     * (address pt, uint256 shares, address recipient, uint256 minAssets)
     */
    uint256 constant REDEEM_PT_FOR_ASSET = 0x08;

    /**
     * Redeems a PT:YT pair for the corresponding ERC4626 IBT
     * shares represents the amount of PT to redeem
     * (address pt, uint256 shares, address recipient, uint256 minIbts)
     */
    uint256 constant REDEEM_PT_FOR_IBT = 0x09;

    /**
     * Performs a flash loan
     * data represents the sequence of commands and inputs to be executed during the loan
     * (address lender, address token, uint256 amount, bytes calldata data)
     */
    uint256 constant FLASH_LOAN = 0x0a;

    /**
     * Split liquidity between IBT and PT before depositing in a Curve pool
     * ibts represents the amount of IBT to split between IBT and PT before depositing in the pool
     * recipient represents the address that will receive the IBT/PT
     * ytRecipient represents the address that will receive the YTs generated by the split
     * (address pool, uint256 ibts, address recipient, address ytRecipient, uint256 minPTShares)
     */
    uint256 constant CURVE_SPLIT_IBT_LIQUIDITY = 0x0b;

    /**
     * Deposit coins into a Curve pool
     * amounts includes the amounts of IBT and PT to deposit in the pool
     * min_mint_amount represents the minimum amount of LP tokens to mint
     * (address pool, uint256[] amounts, uint256 min_mint_amount, address recipient)
     */
    uint256 constant CURVE_ADD_LIQUIDITY = 0x0c;

    /**
     * Withdraw coins from a Curve pool
     * lps represents the amount of LP tokens to burn
     * min_amounts represents the minimum amount of coins to receive
     * (address pool, uint256 lps, uint256[] min_amounts, address recipient)
     */
    uint256 constant CURVE_REMOVE_LIQUIDITY = 0x0d;

    /**
     * Withdraw a single coin from a Curve pool
     * lps represents the amount of LP tokens to burn
     * i represents the index of the coin to withdraw
     * min_amount represents the minimum amount of coin to receive
     * (address pool, uint256 lps, uint256 i, uint256 min_amount, address recipient)
     */
    uint256 constant CURVE_REMOVE_LIQUIDITY_ONE_COIN = 0x0e;

    /**
     * Performs a minimum balance check.
     * (address token, address owner, uint256 minValue)
     */
    uint256 constant ASSERT_MIN_BALANCE = 0x0f;
}