// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.13;

import "@equilibria/root/number/types/PackedFixed18.sol";
import "./Accumulator.sol";

/// @dev PackedAccumulator type
struct PackedAccumulator {
    /// @dev maker accumulator per share
    PackedFixed18 maker;
    /// @dev taker accumulator per share
    PackedFixed18 taker;
}
using PackedAccumulatorLib for PackedAccumulator global;

/**
 * @title PackedAccumulatorLib
 * @dev A packed version of the Accumulator which takes up a single storage slot using `PackedFixed18` values.
 * @notice Library for the packed Accumulator type.
 */
library PackedAccumulatorLib {
    /**
     * @notice Creates an accumulator from a packed accumulator
     * @param self packed accumulator
     * @return New accumulator
     */
    function unpack(PackedAccumulator memory self) internal pure returns (Accumulator memory) {
        return Accumulator({maker: self.maker.unpack(), taker: self.taker.unpack()});
    }
}