X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fuci.cpp;h=cfd112172bf11fe048c4a78447c43888006ca10b;hp=c8f504463cef969db7a72c9816d3c23fd6f18b94;hb=5ab55827b84f1aef79478ec9b030330973036bda;hpb=db322e6a63459bc3dfdf7fd537d42234b854fb76 diff --git a/src/uci.cpp b/src/uci.cpp index c8f50446..cfd11217 100644 --- a/src/uci.cpp +++ b/src/uci.cpp @@ -1,7 +1,7 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2014 Marco Costalba, Joona Kiiski, Tord Romstad Stockfish is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -23,12 +23,12 @@ #include #include "evaluate.h" -#include "notation.h" +#include "movegen.h" #include "position.h" #include "search.h" #include "thread.h" #include "tt.h" -#include "ucioption.h" +#include "uci.h" using namespace std; @@ -39,14 +39,103 @@ namespace { // FEN string of the initial position, normal chess const char* StartFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"; - // Keep track of position keys along the setup moves (from start position to the - // position just before to start searching). Needed by repetition draw detection. + // Keep a track of the position keys along the setup moves (from the start position + // to the position just before the search starts). This is needed by the repetition + // draw detection code. Search::StateStackPtr SetupStates; - void set_option(istringstream& up); - void set_position(Position& pos, istringstream& up); - void go(const Position& pos, istringstream& up); -} + + // position() is called when engine receives the "position" UCI command. + // The function sets up the position described in the given FEN string ("fen") + // or the starting position ("startpos") and then makes the moves given in the + // following move list ("moves"). + + void position(Position& pos, istringstream& is) { + + Move m; + string token, fen; + + is >> token; + + if (token == "startpos") + { + fen = StartFEN; + is >> token; // Consume "moves" token if any + } + else if (token == "fen") + while (is >> token && token != "moves") + fen += token + " "; + else + return; + + pos.set(fen, Options["UCI_Chess960"], Threads.main()); + SetupStates = Search::StateStackPtr(new std::stack()); + + // Parse move list (if any) + while (is >> token && (m = UCI::to_move(pos, token)) != MOVE_NONE) + { + SetupStates->push(StateInfo()); + pos.do_move(m, SetupStates->top()); + } + } + + + // setoption() is called when engine receives the "setoption" UCI command. The + // function updates the UCI option ("name") to the given value ("value"). + + void setoption(istringstream& is) { + + string token, name, value; + + is >> token; // Consume "name" token + + // Read option name (can contain spaces) + while (is >> token && token != "value") + name += string(" ", !name.empty()) + token; + + // Read option value (can contain spaces) + while (is >> token) + value += string(" ", !value.empty()) + token; + + if (Options.count(name)) + Options[name] = value; + else + sync_cout << "No such option: " << name << sync_endl; + } + + + // go() is called when engine receives the "go" UCI command. The function sets + // the thinking time and other parameters from the input string, and starts + // the search. + + void go(const Position& pos, istringstream& is) { + + Search::LimitsType limits; + string token; + + while (is >> token) + { + if (token == "searchmoves") + while (is >> token) + limits.searchmoves.push_back(UCI::to_move(pos, token)); + + else if (token == "wtime") is >> limits.time[WHITE]; + else if (token == "btime") is >> limits.time[BLACK]; + else if (token == "winc") is >> limits.inc[WHITE]; + else if (token == "binc") is >> limits.inc[BLACK]; + else if (token == "movestogo") is >> limits.movestogo; + else if (token == "depth") is >> limits.depth; + else if (token == "nodes") is >> limits.nodes; + else if (token == "movetime") is >> limits.movetime; + else if (token == "mate") is >> limits.mate; + else if (token == "infinite") limits.infinite = true; + else if (token == "ponder") limits.ponder = true; + } + + Threads.start_thinking(pos, limits, SetupStates); + } + +} // namespace /// Wait for a command from the user, parse this text string as an UCI command, @@ -54,13 +143,16 @@ namespace { /// that we exit gracefully if the GUI dies unexpectedly. In addition to the UCI /// commands, the function also supports a few debug commands. -void UCI::loop(const string& args) { +void UCI::loop(int argc, char* argv[]) { - Position pos(StartFEN, false, Threads.main_thread()); // The root position - string token, cmd = args; + Position pos(StartFEN, false, Threads.main()); // The root position + string token, cmd; + + for (int i = 1; i < argc; ++i) + cmd += std::string(argv[i]) + " "; do { - if (args.empty() && !getline(cin, cmd)) // Block here waiting for input + if (argc == 1 && !getline(cin, cmd)) // Block here waiting for input cmd = "quit"; istringstream is(cmd); @@ -69,25 +161,27 @@ void UCI::loop(const string& args) { if (token == "quit" || token == "stop" || token == "ponderhit") { - // GUI sends 'ponderhit' to tell us to ponder on the same move the + // The GUI sends 'ponderhit' to tell us to ponder on the same move the // opponent has played. In case Signals.stopOnPonderhit is set we are // waiting for 'ponderhit' to stop the search (for instance because we // already ran out of time), otherwise we should continue searching but - // switching from pondering to normal search. + // switch from pondering to normal search. if (token != "ponderhit" || Search::Signals.stopOnPonderhit) { Search::Signals.stop = true; - Threads.main_thread()->notify_one(); // Could be sleeping + Threads.main()->notify_one(); // Could be sleeping } else Search::Limits.ponder = false; } - else if (token == "perft" && (is >> token)) // Read perft depth + else if (token == "perft") { + int depth; stringstream ss; + is >> depth; ss << Options["Hash"] << " " - << Options["Threads"] << " " << token << " current perft"; + << Options["Threads"] << " " << depth << " current " << token; benchmark(pos, ss); } @@ -96,7 +190,7 @@ void UCI::loop(const string& args) { << "position key: " << setw(16) << pos.key() << "\nmaterial key: " << setw(16) << pos.material_key() << "\npawn key: " << setw(16) << pos.pawn_key() - << dec << sync_endl; + << dec << nouppercase << setfill(' ') << sync_endl; else if (token == "uci") sync_cout << "id name " << engine_info(true) @@ -105,8 +199,8 @@ void UCI::loop(const string& args) { else if (token == "ucinewgame") TT.clear(); else if (token == "go") go(pos, is); - else if (token == "position") set_position(pos, is); - else if (token == "setoption") set_option(is); + else if (token == "position") position(pos, is); + else if (token == "setoption") setoption(is); else if (token == "flip") pos.flip(); else if (token == "bench") benchmark(pos, is); else if (token == "d") sync_cout << pos.pretty() << sync_endl; @@ -115,102 +209,83 @@ void UCI::loop(const string& args) { else sync_cout << "Unknown command: " << cmd << sync_endl; - } while (token != "quit" && args.empty()); // Args have one-shot behaviour + } while (token != "quit" && argc == 1); // Passed args have one-shot behaviour - Threads.wait_for_think_finished(); // Cannot quit while search is running + Threads.wait_for_think_finished(); // Cannot quit whilst the search is running } -namespace { +/// format_value() converts a Value to a string suitable for use with the UCI +/// protocol specifications: +/// +/// cp The score from the engine's point of view in centipawns. +/// mate Mate in y moves, not plies. If the engine is getting mated +/// use negative values for y. - // set_position() is called when engine receives the "position" UCI command. - // The function sets up the position described in the given fen string ("fen") - // or the starting position ("startpos") and then makes the moves given in the - // following move list ("moves"). +string UCI::format_value(Value v, Value alpha, Value beta) { - void set_position(Position& pos, istringstream& is) { + stringstream ss; - Move m; - string token, fen; + if (abs(v) < VALUE_MATE_IN_MAX_PLY) + ss << "cp " << v * 100 / PawnValueEg; + else + ss << "mate " << (v > 0 ? VALUE_MATE - v + 1 : -VALUE_MATE - v) / 2; - is >> token; + ss << (v >= beta ? " lowerbound" : v <= alpha ? " upperbound" : ""); - if (token == "startpos") - { - fen = StartFEN; - is >> token; // Consume "moves" token if any - } - else if (token == "fen") - while (is >> token && token != "moves") - fen += token + " "; - else - return; + return ss.str(); +} - pos.set(fen, Options["UCI_Chess960"], Threads.main_thread()); - SetupStates = Search::StateStackPtr(new std::stack()); - // Parse move list (if any) - while (is >> token && (m = move_from_uci(pos, token)) != MOVE_NONE) - { - SetupStates->push(StateInfo()); - pos.do_move(m, SetupStates->top()); - } - } +/// format_square() converts a Square to a string (g1, a7, etc.) +std::string UCI::format_square(Square s) { - // set_option() is called when engine receives the "setoption" UCI command. The - // function updates the UCI option ("name") to the given value ("value"). + char ch[] = { char('a' + file_of(s)), + char('1' + rank_of(s)), 0 }; // Zero-terminating + return ch; +} - void set_option(istringstream& is) { - string token, name, value; +/// format_move() converts a Move to a string in coordinate notation +/// (g1f3, a7a8q, etc.). The only special case is castling moves, where we print +/// in the e1g1 notation in normal chess mode, and in e1h1 notation in chess960 +/// mode. Internally castling moves are always encoded as "king captures rook". - is >> token; // Consume "name" token +string UCI::format_move(Move m, bool chess960) { - // Read option name (can contain spaces) - while (is >> token && token != "value") - name += string(" ", !name.empty()) + token; + Square from = from_sq(m); + Square to = to_sq(m); - // Read option value (can contain spaces) - while (is >> token) - value += string(" ", !value.empty()) + token; + if (m == MOVE_NONE) + return "(none)"; - if (Options.count(name)) - Options[name] = value; - else - sync_cout << "No such option: " << name << sync_endl; - } + if (m == MOVE_NULL) + return "0000"; + if (type_of(m) == CASTLING && !chess960) + to = make_square(to > from ? FILE_G : FILE_C, rank_of(from)); - // go() is called when engine receives the "go" UCI command. The function sets - // the thinking time and other parameters from the input string, and starts - // the search. + string move = format_square(from) + format_square(to); - void go(const Position& pos, istringstream& is) { + if (type_of(m) == PROMOTION) + move += " pnbrqk"[promotion_type(m)]; - Search::LimitsType limits; - vector searchMoves; - string token; + return move; +} - while (is >> token) - { - if (token == "searchmoves") - while (is >> token) - searchMoves.push_back(move_from_uci(pos, token)); - else if (token == "wtime") is >> limits.time[WHITE]; - else if (token == "btime") is >> limits.time[BLACK]; - else if (token == "winc") is >> limits.inc[WHITE]; - else if (token == "binc") is >> limits.inc[BLACK]; - else if (token == "movestogo") is >> limits.movestogo; - else if (token == "depth") is >> limits.depth; - else if (token == "nodes") is >> limits.nodes; - else if (token == "movetime") is >> limits.movetime; - else if (token == "mate") is >> limits.mate; - else if (token == "infinite") limits.infinite = true; - else if (token == "ponder") limits.ponder = true; - } +/// to_move() takes a position and a string representing a move in +/// simple coordinate notation and returns an equivalent legal Move if any. - Threads.start_thinking(pos, limits, searchMoves, SetupStates); - } +Move UCI::to_move(const Position& pos, string& str) { + + if (str.length() == 5) // Junior could send promotion piece in uppercase + str[4] = char(tolower(str[4])); + + for (MoveList it(pos); *it; ++it) + if (str == format_move(*it, pos.is_chess960())) + return *it; + + return MOVE_NONE; }