X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fuci.cpp;h=683aac6d8d07a282428a9564f57152115fc7b569;hp=1a2c05a40fccbc007b0f384f5ba2af3610d122dc;hb=7f367e6019289e65b902a5ebf7e3686db5cefdef;hpb=d583176baf70e374b95d09eaacf7e9d3f8978d5a diff --git a/src/uci.cpp b/src/uci.cpp index 1a2c05a4..683aac6d 100644 --- a/src/uci.cpp +++ b/src/uci.cpp @@ -1,13 +1,14 @@ /* - Glaurung, a UCI chess playing engine. - Copyright (C) 2004-2008 Tord Romstad + Stockfish, a UCI chess playing engine derived from Glaurung 2.1 + Copyright (C) 2004-2008 Tord Romstad (Glaurung author) + Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad - Glaurung is free software: you can redistribute it and/or modify + Stockfish 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. - Glaurung is distributed in the hope that it will be useful, + Stockfish 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. @@ -21,306 +22,248 @@ //// Includes //// +#include +#include #include #include #include -#include "book.h" #include "evaluate.h" #include "misc.h" #include "move.h" #include "movegen.h" #include "position.h" -#include "san.h" #include "search.h" -#include "uci.h" #include "ucioption.h" +using namespace std; -//// -//// Local definitions: -//// namespace { - // UCIInputParser is a class for parsing UCI input. The class - // is actually a string stream built on a given input string. + // FEN string for the initial position + const string StartPositionFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"; - typedef std::istringstream UCIInputParser; - - // The root position. This is set up when the user (or in practice, the GUI) - // sends the "position" UCI command. The root position is sent to the think() - // function when the program receives the "go" command. - Position RootPosition; + // UCIParser is a class for parsing UCI input. The class + // is actually a string stream built on a given input string. + typedef istringstream UCIParser; // Local functions - void get_command(); - void handle_command(const std::string &command); - void set_option(UCIInputParser &uip); - void set_position(UCIInputParser &uip); - void go(UCIInputParser &uip); + void set_option(UCIParser& up); + void set_position(Position& pos, UCIParser& up); + bool go(Position& pos, UCIParser& up); + void perft(Position& pos, UCIParser& up); } -//// -//// Functions -//// +/// execute_uci_command() takes a string as input, uses a UCIParser +/// object to parse this text string as a UCI command, and calls +/// the appropriate functions. In addition to the UCI commands, +/// the function also supports a few debug commands. -/// uci_main_loop() is the only global function in this file. It is -/// called immediately after the program has finished initializing. -/// The program remains in this loop until it receives the "quit" UCI -/// command. +bool execute_uci_command(const string& cmd) { -void uci_main_loop() { + static Position pos(StartPositionFEN, false, 0); // The root position + UCIParser up(cmd); + string token; - RootPosition.from_fen(StartPosition); + up >> token; // operator>>() skips any whitespace - while (1) - get_command(); -} + if (token == "quit") + return false; + else if (token == "go") + return go(pos, up); -//// -//// Local functions -//// + else if (token == "uci") + cout << "id name " << engine_name() + << "\nid author " << engine_authors() + << "\n" << options_to_uci() + << "\nuciok" << endl; -namespace { + else if (token == "ucinewgame") + pos.from_fen(StartPositionFEN, false); - // get_command() waits for a command from the user, and passes - // this command to handle_command. get_command also intercepts - // EOF from stdin, by translating EOF to the "quit" command. This - // ensures that Glaurung exits gracefully if the GUI dies - // unexpectedly. + else if (token == "isready") + cout << "readyok" << endl; - void get_command() { + else if (token == "position") + set_position(pos, up); - std::string command; + else if (token == "setoption") + set_option(up); - if (!std::getline(std::cin, command)) - command = "quit"; + else if (token == "d") + pos.print(); - handle_command(command); + else if (token == "eval") + { + read_evaluation_uci_options(pos.side_to_move()); + cout << trace_evaluate(pos) << endl; } + else if (token == "key") + cout << "key: " << hex << pos.get_key() + << "\nmaterial key: " << pos.get_material_key() + << "\npawn key: " << pos.get_pawn_key() << endl; - // handle_command() takes a text string as input, uses a - // UCIInputParser object to parse this text string as a UCI command, - // and calls the appropriate functions. In addition to the UCI - // commands, the function also supports a few debug commands. + else if (token == "perft") + perft(pos, up); - void handle_command(const std::string &command) { + else if (token == "flip") + { + Position p(pos, pos.thread()); + pos.flipped_copy(p); + } + else + cout << "Unknown command: " << cmd << endl; - UCIInputParser uip(command); - std::string token; + return true; +} - uip >> token; // operator >> skips any whitespace - if (token == "quit") - { - OpeningBook.close(); - stop_threads(); - quit_eval(); - exit(0); - } - else if (token == "uci") - { - std::cout << "id name " << engine_name() << std::endl; - std::cout << "id author Tord Romstad" << std::endl; - print_uci_options(); - std::cout << "uciok" << std::endl; - } - else if (token == "ucinewgame") - { - TT.clear(); - Position::init_piece_square_tables(); - RootPosition.from_fen(StartPosition); - - } - else if (token == "isready") - std::cout << "readyok" << std::endl; - else if (token == "position") - set_position(uip); - else if (token == "setoption") - set_option(uip); - else if (token == "go") - go(uip); - - // The remaining commands are for debugging purposes only. - // Perhaps they should be removed later in order to reduce the - // size of the program binary. - else if (token == "d") - RootPosition.print(); - else if (token == "flip") - { - Position p(RootPosition); - RootPosition.flipped_copy(p); - } - else if (token == "eval") - { - EvalInfo ei; - std::cout << "Incremental mg: " << RootPosition.mg_value() - << std::endl; - std::cout << "Incremental eg: " << RootPosition.eg_value() - << std::endl; - std::cout << "Full eval: " - << evaluate(RootPosition, ei, 0) - << std::endl; - } - else if (token == "key") - { - std::cout << "key: " << RootPosition.get_key() - << " material key: " << RootPosition.get_material_key() - << " pawn key: " << RootPosition.get_pawn_key() - << std::endl; - } - else - { - std::cout << "Unknown command: " << command << std::endl; - while (!uip.eof()) - { - uip >> token; - std::cout << token << std::endl; - } - } - } +//// +//// Local functions +//// +namespace { - // set_position() is called when Glaurung receives the "position" UCI - // command. The input parameter is a UCIInputParser. It is assumed + // set_position() is called when Stockfish receives the "position" UCI + // command. The input parameter is a UCIParser. It is assumed // that this parser has consumed the first token of the UCI command // ("position"), and is ready to read the second token ("startpos" // or "fen", if the input is well-formed). - void set_position(UCIInputParser &uip) { + void set_position(Position& pos, UCIParser& up) { - std::string token; + string fen, token; - uip >> token; // operator >> skips any whitespace + up >> token; // operator>>() skips any whitespace if (token == "startpos") - RootPosition.from_fen(StartPosition); - else if (token == "fen") { - std::string fen; - while (token != "moves" && !uip.eof()) - { - uip >> token; - fen += token; - fen += ' '; - } - RootPosition.from_fen(fen); + pos.from_fen(StartPositionFEN, false); + up >> token; // Consume "moves" token } - - if (!uip.eof()) + else if (token == "fen") { - if (token != "moves") - uip >> token; - if (token == "moves") - { - Move move; - UndoInfo u; - while (!uip.eof()) - { - uip >> token; - move = move_from_string(RootPosition, token); - RootPosition.do_move(move, u); - if (RootPosition.rule_50_counter() == 0) - RootPosition.reset_game_ply(); - } - } + while (up >> token && token != "moves") + fen += token + " "; + + pos.from_fen(fen, Options["UCI_Chess960"].value()); } + else return; + + // Parse move list (if any) + while (up >> token) + pos.do_setup_move(move_from_uci(pos, token)); } - // set_option() is called when Glaurung receives the "setoption" UCI - // command. The input parameter is a UCIInputParser. It is assumed + // set_option() is called when Stockfish receives the "setoption" UCI + // command. The input parameter is a UCIParser. It is assumed // that this parser has consumed the first token of the UCI command // ("setoption"), and is ready to read the second token ("name", if // the input is well-formed). - void set_option(UCIInputParser &uip) { + void set_option(UCIParser& up) { - std::string token, name; + string value = "true"; // UCI buttons don't have a "value" field + string token, name; - uip >> token; - if (token == "name") - { - uip >> name; - uip >> token; - while (!uip.eof() && token != "value") - { - name += (" " + token); - uip >> token; - } - if (token == "value") - { - std::getline(uip, token); // reads until end of line - set_option_value(name, token); - } else - push_button(name); - } + up >> token; // Consume "name" token + up >> name; // Read option name + + // Handle names with included spaces + while (up >> token && token != "value") + name += " " + token; + + up >> value; // Read option value + + // Handle values with included spaces + while (up >> token) + value += " " + token; + + if (Options.find(name) != Options.end()) + Options[name].set_value(value); + else + cout << "No such option: " << name << endl; } - // go() is called when Glaurung receives the "go" UCI command. The - // input parameter is a UCIInputParser. It is assumed that this + // go() is called when Stockfish receives the "go" UCI command. The + // input parameter is a UCIParser. It is assumed that this // parser has consumed the first token of the UCI command ("go"), - // and is ready to read the second token. The function sets the + // and is ready to read the second token. The function sets the // thinking time and other parameters from the input string, and // calls think() (defined in search.cpp) with the appropriate - // parameters. + // parameters. Returns false if a quit command is received while + // thinking, returns true otherwise. - void go(UCIInputParser &uip) { - - std::string token; + bool go(Position& pos, UCIParser& up) { + string token; + Move searchMoves[MOVES_MAX]; + int movesToGo, depth, nodes, moveTime, numOfMoves; + bool infinite, ponder; int time[2] = {0, 0}, inc[2] = {0, 0}; - int movesToGo = 0, depth = 0, nodes = 0, moveTime = 0; - bool infinite = false, ponder = false; - Move searchMoves[500]; searchMoves[0] = MOVE_NONE; + infinite = ponder = false; + movesToGo = depth = nodes = moveTime = numOfMoves = 0; - while (!uip.eof()) + while (up >> token) { - uip >> token; - if (token == "infinite") infinite = true; else if (token == "ponder") ponder = true; else if (token == "wtime") - uip >> time[0]; + up >> time[0]; else if (token == "btime") - uip >> time[1]; + up >> time[1]; else if (token == "winc") - uip >> inc[0]; + up >> inc[0]; else if (token == "binc") - uip >> inc[1]; + up >> inc[1]; else if (token == "movestogo") - uip >> movesToGo; + up >> movesToGo; else if (token == "depth") - uip >> depth; + up >> depth; else if (token == "nodes") - uip >> nodes; + up >> nodes; else if (token == "movetime") - uip >> moveTime; + up >> moveTime; else if (token == "searchmoves") { - int numOfMoves = 0; - while (!uip.eof()) - { - uip >> token; - searchMoves[numOfMoves++] = move_from_string(RootPosition, token); - } + while (up >> token) + searchMoves[numOfMoves++] = move_from_uci(pos, token); + searchMoves[numOfMoves] = MOVE_NONE; } } - if (moveTime) - infinite = true; // HACK + assert(pos.is_ok()); + + return think(pos, infinite, ponder, time, inc, movesToGo, + depth, nodes, moveTime, searchMoves); + } + + void perft(Position& pos, UCIParser& up) { + + int depth, tm; + int64_t n; + + if (!(up >> depth)) + return; + + tm = get_system_time(); + + n = perft(pos, depth * ONE_PLY); - think(RootPosition, infinite, ponder, RootPosition.side_to_move(), time, - inc, movesToGo, depth, nodes, moveTime, searchMoves); + tm = get_system_time() - tm; + std::cout << "\nNodes " << n + << "\nTime (ms) " << tm + << "\nNodes/second " << int(n / (tm / 1000.0)) << std::endl; } }