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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
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.
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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <algorithm>
#include <cassert>
#include <cstdlib>
#include <sstream>
#include "evaluate.h"
#include "misc.h"
#include "thread.h"
#include "tt.h"
#include "ucioption.h"
using std::string;
UCI::OptionsMap Options; // Global object
namespace UCI {
/// 'On change' actions, triggered by an option's value change
void on_logger(const Option& o) { start_logger(o); }
void on_eval(const Option&) { Eval::init(); }
void on_threads(const Option&) { Threads.read_uci_options(); }
void on_hash_size(const Option& o) { TT.set_size(o); }
void on_clear_hash(const Option&) { TT.clear(); }
/// Our case insensitive less() function as required by UCI protocol
bool ci_less(char c1, char c2) { return tolower(c1) < tolower(c2); }
bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
return std::lexicographical_compare(s1.begin(), s1.end(), s2.begin(), s2.end(), ci_less);
}
/// init() initializes the UCI options to their hard coded default values
void init(OptionsMap& o) {
o["Write Debug Log"] = Option(false, on_logger);
o["Write Search Log"] = Option(false);
o["Search Log Filename"] = Option("SearchLog.txt");
o["Book File"] = Option("book.bin");
o["Best Book Move"] = Option(false);
o["Contempt Factor"] = Option(0, -50, 50);
o["Mobility (Midgame)"] = Option(100, 0, 200, on_eval);
o["Mobility (Endgame)"] = Option(100, 0, 200, on_eval);
o["Pawn Structure (Midgame)"] = Option(100, 0, 200, on_eval);
o["Pawn Structure (Endgame)"] = Option(100, 0, 200, on_eval);
o["Passed Pawns (Midgame)"] = Option(100, 0, 200, on_eval);
o["Passed Pawns (Endgame)"] = Option(100, 0, 200, on_eval);
o["Space"] = Option(100, 0, 200, on_eval);
o["Aggressiveness"] = Option(100, 0, 200, on_eval);
o["Cowardice"] = Option(100, 0, 200, on_eval);
o["Min Split Depth"] = Option(0, 0, 12, on_threads);
o["Max Threads per Split Point"] = Option(5, 4, 8, on_threads);
o["Threads"] = Option(1, 1, MAX_THREADS, on_threads);
o["Idle Threads Sleep"] = Option(false);
o["Hash"] = Option(32, 1, 8192, on_hash_size);
o["Clear Hash"] = Option(on_clear_hash);
o["Ponder"] = Option(true);
o["OwnBook"] = Option(false);
o["MultiPV"] = Option(1, 1, 500);
o["Skill Level"] = Option(20, 0, 20);
o["Emergency Move Horizon"] = Option(40, 0, 50);
o["Emergency Base Time"] = Option(200, 0, 30000);
o["Emergency Move Time"] = Option(70, 0, 5000);
o["Minimum Thinking Time"] = Option(20, 0, 5000);
o["Slow Mover"] = Option(100, 10, 1000);
o["UCI_Chess960"] = Option(false);
o["UCI_AnalyseMode"] = Option(false, on_eval);
}
/// operator<<() is used to print all the options default values in chronological
/// insertion order (the idx field) and in the format defined by the UCI protocol.
std::ostream& operator<<(std::ostream& os, const OptionsMap& om) {
for (size_t idx = 0; idx < om.size(); idx++)
for (OptionsMap::const_iterator it = om.begin(); it != om.end(); ++it)
if (it->second.idx == idx)
{
const Option& o = it->second;
os << "\noption name " << it->first << " type " << o.type;
if (o.type != "button")
os << " default " << o.defaultValue;
if (o.type == "spin")
os << " min " << o.min << " max " << o.max;
break;
}
return os;
}
/// Option c'tors and conversion operators
Option::Option(const char* v, Fn* f) : type("string"), min(0), max(0), idx(Options.size()), on_change(f)
{ defaultValue = currentValue = v; }
Option::Option(bool v, Fn* f) : type("check"), min(0), max(0), idx(Options.size()), on_change(f)
{ defaultValue = currentValue = (v ? "true" : "false"); }
Option::Option(Fn* f) : type("button"), min(0), max(0), idx(Options.size()), on_change(f)
{}
Option::Option(int v, int minv, int maxv, Fn* f) : type("spin"), min(minv), max(maxv), idx(Options.size()), on_change(f)
{ std::ostringstream ss; ss << v; defaultValue = currentValue = ss.str(); }
Option::operator int() const {
assert(type == "check" || type == "spin");
return (type == "spin" ? atoi(currentValue.c_str()) : currentValue == "true");
}
Option::operator std::string() const {
assert(type == "string");
return currentValue;
}
/// operator=() updates currentValue and triggers on_change() action. It's up to
/// the GUI to check for option's limits, but we could receive the new value from
/// the user by console window, so let's check the bounds anyway.
Option& Option::operator=(const string& v) {
assert(!type.empty());
if ( (type != "button" && v.empty())
|| (type == "check" && v != "true" && v != "false")
|| (type == "spin" && (atoi(v.c_str()) < min || atoi(v.c_str()) > max)))
return *this;
if (type != "button")
currentValue = v;
if (on_change)
(*on_change)(*this);
return *this;
}
} // namespace UCI
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