-////
-//// Local functions
-////
-
-namespace {
-
- // 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.
-
- void get_command() {
-
- std::string command;
-
- if (!std::getline(std::cin, command))
- command = "quit";
-
- handle_command(command);
- }
-
-
- // 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.
-
- void handle_command(const std::string &command) {
-
- UCIInputParser uip(command);
- std::string token;
-
- 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;
- }
- }
- }
-
-
- // set_position() is called when Glaurung receives the "position" UCI
- // command. The input parameter is a UCIInputParser. 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) {
-
- std::string token;
-
- uip >> token; // operator >> skips any whitespace