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LibChess: Make piece_for_char_promotion()
more generally useful
- Rename to make it clear it's not just for promotion - Understand 'p' for pawns - Take a char parameter instead of StringView since it's always 1 char
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c73c697f94
Notes:
sideshowbarker
2024-07-17 09:47:09 +09:00
Author: https://github.com/AtkinsSJ Commit: https://github.com/SerenityOS/serenity/commit/c73c697f94 Pull-request: https://github.com/SerenityOS/serenity/pull/18487
@ -37,21 +37,22 @@ Optional<char> char_for_piece(Type type, Notation notation)
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VERIFY_NOT_REACHED();
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}
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Chess::Type piece_for_char_promotion(StringView str)
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Type piece_from_char(char c)
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{
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DeprecatedString string = DeprecatedString(str).to_lowercase();
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if (string == "")
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return Type::None;
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if (string == "n")
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switch (to_ascii_lowercase(c)) {
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case 'n':
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return Type::Knight;
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if (string == "b")
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case 'b':
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return Type::Bishop;
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if (string == "r")
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case 'r':
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return Type::Rook;
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if (string == "q")
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case 'q':
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return Type::Queen;
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if (string == "k")
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case 'k':
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return Type::King;
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case 'p':
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return Type::Pawn;
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}
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return Type::None;
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}
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@ -93,7 +94,7 @@ DeprecatedString Square::to_algebraic() const
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Move::Move(StringView long_algebraic)
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: from(long_algebraic.substring_view(0, 2))
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, to(long_algebraic.substring_view(2, 2))
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, promote_to(piece_for_char_promotion((long_algebraic.length() >= 5) ? long_algebraic.substring_view(4, 1) : ""sv))
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, promote_to((long_algebraic.length() >= 5) ? piece_from_char(long_algebraic[4]) : Type::None)
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{
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}
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@ -130,8 +131,9 @@ Move Move::from_algebraic(StringView algebraic, const Color turn, Board const& b
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}
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if (algebraic.contains('=')) {
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move.promote_to = piece_for_char_promotion(move_string.split('=').at(1).substring(0, 1));
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move_string = move_string.split('=').at(0);
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auto parts = move_string.split_view('=');
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move.promote_to = piece_from_char(parts[1][0]);
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move_string = parts[0];
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}
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move.to = Square(move_string.substring(move_string.length() - 2, 2));
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@ -145,7 +147,7 @@ Move Move::from_algebraic(StringView algebraic, const Color turn, Board const& b
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if (move_string.is_empty() || move_string.characters()[0] >= 'a') {
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move.piece = Piece(turn, Type::Pawn);
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} else {
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move.piece = Piece(turn, piece_for_char_promotion(move_string.substring(0, 1)));
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move.piece = Piece(turn, piece_from_char(move_string[0]));
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move_string = move_string.substring(1, move_string.length() - 1);
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}
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@ -30,7 +30,7 @@ enum class Notation {
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FEN,
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};
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Optional<char> char_for_piece(Type, Notation);
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Chess::Type piece_for_char_promotion(StringView str);
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Type piece_from_char(char);
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enum class Color : u8 {
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White,
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