function buyShares(address to) external nonReentrant returns (uint256 shares, uint256 baseInput, uint256 quoteInput) {
    if (totalSupply() == 0) {
    } else if (baseReserve > 0 && quoteReserve > 0) {
        uint256 baseInputRatio = DecimalMath.divFloor(baseInput, baseReserve);
        uint256 quoteInputRatio = DecimalMath.divFloor(quoteInput, quoteReserve);
        uint256 mintRatio = quoteInputRatio < baseInputRatio ? quoteInputRatio : baseInputRatio;
        shares = DecimalMath.mulFloor(totalSupply(), mintRatio);
    }
}
