#include <sstream>
#include <string>
-#include "book.h"
#include "evaluate.h"
#include "misc.h"
#include "move.h"
#include "position.h"
#include "san.h"
#include "search.h"
-#include "uci.h"
#include "ucioption.h"
using namespace std;
// FEN string for the initial position
const string StartPositionFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
- // UCIInputParser is a class for parsing UCI input. The class
+ // UCIParser is a class for parsing UCI input. The class
// is actually a string stream built on a given input string.
-
- typedef 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(0);
+ typedef istringstream UCIParser;
// Local functions
- bool handle_command(const string& command);
- void set_option(UCIInputParser& uip);
- void set_position(UCIInputParser& uip);
- bool go(UCIInputParser& uip);
- void perft(UCIInputParser& uip);
+ bool handle_command(Position& pos, const string& command);
+ void set_option(UCIParser& uip);
+ void set_position(Position& pos, UCIParser& uip);
+ bool go(Position& pos, UCIParser& uip);
+ void perft(Position& pos, UCIParser& uip);
}
/// called immediately after the program has finished initializing.
/// The program remains in this loop until it receives the "quit" UCI
/// command. It waits for a command from the user, and passes this
-/// command to handle_command and also intercepts EOF from stdin,
+/// command to handle_command() and also intercepts EOF from stdin,
/// by translating EOF to the "quit" command. This ensures that Stockfish
/// exits gracefully if the GUI dies unexpectedly.
void uci_main_loop() {
- RootPosition.from_fen(StartPositionFEN);
+ Position pos(StartPositionFEN, 0); // The root position
string command;
do {
if (!getline(cin, command))
command = "quit";
- } while (handle_command(command));
+ } while (handle_command(pos, command));
}
namespace {
- // 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.
+ // handle_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.
- bool handle_command(const string& command) {
+ bool handle_command(Position& pos, const string& command) {
- UCIInputParser uip(command);
+ UCIParser up(command);
string token;
- if (!(uip >> token)) // operator>>() skips any whitespace
+ if (!(up >> token)) // operator>>() skips any whitespace
return true;
if (token == "quit")
return false;
if (token == "go")
- return go(uip);
+ return go(pos, up);
if (token == "uci")
{
cout << "uciok" << endl;
}
else if (token == "ucinewgame")
- {
- push_button("New Game");
- RootPosition.from_fen(StartPositionFEN);
- }
+ pos.from_fen(StartPositionFEN);
+
else if (token == "isready")
cout << "readyok" << endl;
+
else if (token == "position")
- set_position(uip);
+ set_position(pos, up);
+
else if (token == "setoption")
- set_option(uip);
+ set_option(up);
- // The remaining commands are for debugging purposes only.
- // Perhaps they should be removed later in order to reduce the
- // size of the program binary.
+ // The remaining commands are for debugging purposes only
else if (token == "d")
- RootPosition.print();
+ pos.print();
+
else if (token == "flip")
{
- Position p(RootPosition, RootPosition.thread());
- RootPosition.flipped_copy(p);
+ Position p(pos, pos.thread());
+ pos.flipped_copy(p);
}
else if (token == "eval")
{
Value evalMargin;
- cout << "Incremental mg: " << mg_value(RootPosition.value())
- << "\nIncremental eg: " << eg_value(RootPosition.value())
- << "\nFull eval: " << evaluate(RootPosition, evalMargin) << endl;
+ cout << "Incremental mg: " << mg_value(pos.value())
+ << "\nIncremental eg: " << eg_value(pos.value())
+ << "\nFull eval: " << evaluate(pos, evalMargin) << endl;
}
else if (token == "key")
- cout << "key: " << hex << RootPosition.get_key()
- << "\nmaterial key: " << RootPosition.get_material_key()
- << "\npawn key: " << RootPosition.get_pawn_key() << endl;
+ cout << "key: " << hex << pos.get_key()
+ << "\nmaterial key: " << pos.get_material_key()
+ << "\npawn key: " << pos.get_pawn_key() << endl;
+
else if (token == "perft")
- perft(uip);
+ perft(pos, up);
+
else
cout << "Unknown command: " << command << endl;
// set_position() is called when Stockfish receives the "position" UCI
- // command. The input parameter is a UCIInputParser. It is assumed
+ // 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) {
string token;
- if (!(uip >> token)) // operator>>() skips any whitespace
+ if (!(up >> token)) // operator>>() skips any whitespace
return;
if (token == "startpos")
- RootPosition.from_fen(StartPositionFEN);
+ pos.from_fen(StartPositionFEN);
else if (token == "fen")
{
string fen;
- while (uip >> token && token != "moves")
+ while (up >> token && token != "moves")
{
fen += token;
fen += ' ';
}
- RootPosition.from_fen(fen);
+ pos.from_fen(fen);
}
- if (uip.good())
+ if (up.good())
{
if (token != "moves")
- uip >> token;
+ up >> token;
if (token == "moves")
{
Move move;
StateInfo st;
- while (uip >> token)
+ while (up >> token)
{
- move = move_from_string(RootPosition, token);
- RootPosition.do_move(move, st);
- if (RootPosition.rule_50_counter() == 0)
- RootPosition.reset_game_ply();
+ move = move_from_uci(pos, token);
+ pos.do_move(move, st);
+ if (pos.rule_50_counter() == 0)
+ pos.reset_game_ply();
- RootPosition.inc_startpos_ply_counter(); //FIXME: make from_fen to support this and rule50
+ pos.inc_startpos_ply_counter(); //FIXME: make from_fen to support this and rule50
}
// Our StateInfo st is about going out of scope so copy
- // its content inside RootPosition before it disappears.
- RootPosition.detach();
+ // its content inside pos before it disappears.
+ pos.detach();
}
}
}
// set_option() is called when Stockfish receives the "setoption" UCI
- // command. The input parameter is a UCIInputParser. It is assumed
+ // 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) {
string token, name, value;
- if (!(uip >> token)) // operator>>() skips any whitespace
+ if (!(up >> token) || token != "name") // operator>>() skips any whitespace
return;
- if (token == "name" && uip >> name)
- {
- while (uip >> token && token != "value")
- name += (" " + token);
+ if (!(up >> name))
+ return;
- if (token == "value" && uip >> value)
- {
- while (uip >> token)
- value += (" " + token);
+ // Handle names with included spaces
+ while (up >> token && token != "value")
+ name += (" " + token);
+
+ if (Options.find(name) == Options.end())
+ {
+ cout << "No such option: " << name << endl;
+ return;
+ }
- set_option_value(name, value);
- } else
- push_button(name);
+ // Is a button ?
+ if (token != "value")
+ {
+ Options[name].set_value("true");
+ return;
}
+
+ if (!(up >> value))
+ return;
+
+ // Handle values with included spaces
+ while (up >> token)
+ value += (" " + token);
+
+ Options[name].set_value(value);
}
// go() is called when Stockfish receives the "go" UCI command. The
- // input parameter is a UCIInputParser. It is assumed that this
+ // 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
// thinking time and other parameters from the input string, and
// parameters. Returns false if a quit command is received while
// thinking, returns true otherwise.
- bool go(UCIInputParser& uip) {
+ bool go(Position& pos, UCIParser& up) {
string token;
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];
+ Move searchMoves[MOVES_MAX];
searchMoves[0] = MOVE_NONE;
- while (uip >> token)
+ while (up >> 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 >> token)
- searchMoves[numOfMoves++] = move_from_string(RootPosition, token);
+ while (up >> token)
+ searchMoves[numOfMoves++] = move_from_uci(pos, token);
searchMoves[numOfMoves] = MOVE_NONE;
}
}
- assert(RootPosition.is_ok());
+ assert(pos.is_ok());
- return think(RootPosition, infinite, ponder, time, inc, movesToGo,
+ return think(pos, infinite, ponder, time, inc, movesToGo,
depth, nodes, moveTime, searchMoves);
}
- void perft(UCIInputParser& uip) {
+ void perft(Position& pos, UCIParser& up) {
- string token;
int depth, tm, n;
- Position pos(RootPosition, RootPosition.thread());
- if (!(uip >> depth))
+ if (!(up >> depth))
return;
tm = get_system_time();
tm = get_system_time() - tm;
std::cout << "\nNodes " << n
<< "\nTime (ms) " << tm
- << "\nNodes/second " << (int)(n/(tm/1000.0)) << std::endl;
+ << "\nNodes/second " << int(n / (tm / 1000.0)) << std::endl;
}
}
projects / stockfish / blobdiff