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LibChess: Flesh out InfoCommand implementation

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UCI info commands can now be received and parsed. All info types from
the UCI specification are supported.

The info command is not currently used by our engine or GUI, but the GUI
can now receive an info command from a 3rd party engine without
complaining.
This commit is contained in:
Tim Ledbetter 2023-04-21 19:35:54 +01:00 • committed by Sam Atkins
parent 77f3e9710b
commit c885df98da
2 changed files with 203 additions and 17 deletions
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47
Userland/Libraries/LibChess/UCICommand.h
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2020-2022, the SerenityOS developers.
* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2023, Tim Ledbetter <timledbetter@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -246,6 +247,23 @@ private:
class InfoCommand : public Command {
public:
enum class ScoreType {
Centipawns,
Mate
};
enum class ScoreBound {
None,
Lower,
Upper
};
struct Score {
ScoreType type;
int value;
ScoreBound bound;
};
explicit InfoCommand()
: Command(Command::Type::Info)
{
@ -255,18 +273,23 @@ public:
virtual ErrorOr<String> to_string() const override;
Optional<int> depth;
Optional<int> seldepth;
Optional<int> time;
Optional<int> nodes;
Optional<Vector<Chess::Move>> pv;
// FIXME: Add multipv.
Optional<int> score_cp;
Optional<int> score_mate;
// FIXME: Add score bounds.
Optional<Chess::Move> currmove;
Optional<int> currmove_number;
// FIXME: Add additional fields.
private:
Optional<int> m_depth;
Optional<int> m_seldepth;
Optional<int> m_time;
Optional<int> m_nodes;
Optional<Vector<Chess::Move>> m_pv;
Optional<int> m_multipv;
Optional<Score> m_score;
Optional<Chess::Move> m_currmove;
Optional<int> m_currmovenumber;
Optional<int> m_hashfull;
Optional<int> m_nps;
Optional<int> m_tbhits;
Optional<int> m_cpuload;
Optional<String> m_string;
Optional<Vector<Chess::Move>> m_refutation;
Optional<Vector<Chess::Move>> m_currline;
};
class QuitCommand : public Command {