pgnreader-types.h

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// Hoover Chess Utilities / PGN reader
// Copyright (C) 2022-2025  Sami Kiminki
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
#ifndef HOOVER_CHESS_UTILS__PGN_READER__PGNREADER_TYPES_H_INCLUDED
#define HOOVER_CHESS_UTILS__PGN_READER__PGNREADER_TYPES_H_INCLUDED
 
#include <cinttypes>
 
#include "chessboard-types.h"
 
namespace hoover_chess_utils::pgn_reader
{
 
 
enum class PgnResult : std::uint_fast8_t
{
    WHITE_WIN,
 
    BLACK_WIN,
 
    DRAW,
 
    UNKNOWN,
};
 
constexpr inline std::uint_fast32_t makePlyNum(std::uint_fast32_t moveNum, Color color) noexcept
{
    assert(moveNum >= 1U);
    [[assume(moveNum >= 1U)]];
 
    assert(moveNum <= UINT32_C(0x80'00'00'00));
    [[assume(moveNum <= UINT32_C(0x80'00'00'00))]];
 
    return (moveNum * 2U) - (color == Color::WHITE ? 2U : 1U);
}
 
constexpr inline Color colorOfPly(std::uint_fast32_t plyNum) noexcept
{
    return (plyNum & 1U) ? Color::BLACK : Color::WHITE;
}
 
constexpr inline std::uint_fast32_t moveNumOfPly(std::uint_fast32_t plyNum) noexcept
{
    return 1U + (plyNum / 2U);
}
 
 
}
 
#endif