#include "position.h"
-using namespace std;
-
namespace {
-const vector<string> Defaults = {
+const std::vector<std::string> Defaults = {
"setoption name UCI_Chess960 value false",
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
"r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 10",
/// bench 64 4 5000 current movetime : search current position with 4 threads for 5 sec
/// bench 16 1 5 blah perft : run a perft 5 on positions in file "blah"
-vector<string> setup_bench(const Position& current, istream& is) {
+std::vector<std::string> setup_bench(const Position& current, std::istream& is) {
- vector<string> fens, list;
- string go, token;
+ std::vector<std::string> fens, list;
+ std::string go, token;
// Assign default values to missing arguments
- string ttSize = (is >> token) ? token : "16";
- string threads = (is >> token) ? token : "1";
- string limit = (is >> token) ? token : "13";
- string fenFile = (is >> token) ? token : "default";
- string limitType = (is >> token) ? token : "depth";
+ std::string ttSize = (is >> token) ? token : "16";
+ std::string threads = (is >> token) ? token : "1";
+ std::string limit = (is >> token) ? token : "13";
+ std::string fenFile = (is >> token) ? token : "default";
+ std::string limitType = (is >> token) ? token : "depth";
go = limitType == "eval" ? "eval" : "go " + limitType + " " + limit;
else
{
- string fen;
- ifstream file(fenFile);
+ std::string fen;
+ std::ifstream file(fenFile);
if (!file.is_open())
{
- cerr << "Unable to open file " << fenFile << endl;
+ std::cerr << "Unable to open file " << fenFile << std::endl;
exit(EXIT_FAILURE);
}
list.emplace_back("setoption name Hash value " + ttSize);
list.emplace_back("ucinewgame");
- for (const string& fen : fens)
- if (fen.find("setoption") != string::npos)
+ for (const std::string& fen : fens)
+ if (fen.find("setoption") != std::string::npos)
list.emplace_back(fen);
else
{
#endif
-using namespace std;
-
namespace Stockfish {
namespace Eval {
- string currentEvalFileName = "None";
+ std::string currentEvalFileName = "None";
/// NNUE::init() tries to load a NNUE network at startup time, or when the engine
/// receives a UCI command "setoption name EvalFile value nn-[a-z0-9]{12}.nnue"
void NNUE::init() {
- string eval_file = string(Options["EvalFile"]);
+ std::string eval_file = std::string(Options["EvalFile"]);
if (eval_file.empty())
eval_file = EvalFileDefaultName;
#if defined(DEFAULT_NNUE_DIRECTORY)
- vector<string> dirs = { "<internal>" , "" , CommandLine::binaryDirectory , stringify(DEFAULT_NNUE_DIRECTORY) };
+ std::vector<std::string> dirs = { "<internal>" , "" , CommandLine::binaryDirectory , stringify(DEFAULT_NNUE_DIRECTORY) };
#else
- vector<string> dirs = { "<internal>" , "" , CommandLine::binaryDirectory };
+ std::vector<std::string> dirs = { "<internal>" , "" , CommandLine::binaryDirectory };
#endif
- for (const string& directory : dirs)
+ for (const std::string& directory : dirs)
if (currentEvalFileName != eval_file)
{
if (directory != "<internal>")
{
- ifstream stream(directory + eval_file, ios::binary);
+ std::ifstream stream(directory + eval_file, std::ios::binary);
if (NNUE::load_eval(eval_file, stream))
currentEvalFileName = eval_file;
}
if (directory == "<internal>" && eval_file == EvalFileDefaultName)
{
// C++ way to prepare a buffer for a memory stream
- class MemoryBuffer : public basic_streambuf<char> {
+ class MemoryBuffer : public std::basic_streambuf<char> {
public: MemoryBuffer(char* p, size_t n) { setg(p, p, p + n); setp(p, p + n); }
};
size_t(gEmbeddedNNUESize));
(void) gEmbeddedNNUEEnd; // Silence warning on unused variable
- istream stream(&buffer);
+ std::istream stream(&buffer);
if (NNUE::load_eval(eval_file, stream))
currentEvalFileName = eval_file;
}
/// NNUE::verify() verifies that the last net used was loaded successfully
void NNUE::verify() {
- string eval_file = string(Options["EvalFile"]);
+ std::string eval_file = std::string(Options["EvalFile"]);
if (eval_file.empty())
eval_file = EvalFileDefaultName;
if (currentEvalFileName != eval_file)
{
- string msg1 = "Network evaluation parameters compatible with the engine must be available.";
- string msg2 = "The network file " + eval_file + " was not loaded successfully.";
- string msg3 = "The UCI option EvalFile might need to specify the full path, including the directory name, to the network file.";
- string msg4 = "The default net can be downloaded from: https://tests.stockfishchess.org/api/nn/" + std::string(EvalFileDefaultName);
- string msg5 = "The engine will be terminated now.";
+ std::string msg1 = "Network evaluation parameters compatible with the engine must be available.";
+ std::string msg2 = "The network file " + eval_file + " was not loaded successfully.";
+ std::string msg3 = "The UCI option EvalFile might need to specify the full path, including the directory name, to the network file.";
+ std::string msg4 = "The default net can be downloaded from: https://tests.stockfishchess.org/api/nn/" + std::string(EvalFileDefaultName);
+ std::string msg5 = "The engine will be terminated now.";
sync_cout << "info string ERROR: " << msg1 << sync_endl;
sync_cout << "info string ERROR: " << msg2 << sync_endl;
#include <stdlib.h>
#endif
-using namespace std;
-
namespace Stockfish {
namespace {
/// Version number or dev.
-constexpr string_view version = "dev";
+constexpr std::string_view version = "dev";
/// Our fancy logging facility. The trick here is to replace cin.rdbuf() and
/// cout.rdbuf() with two Tie objects that tie cin and cout to a file stream. We
/// usual I/O functionality, all without changing a single line of code!
/// Idea from http://groups.google.com/group/comp.lang.c++/msg/1d941c0f26ea0d81
-struct Tie: public streambuf { // MSVC requires split streambuf for cin and cout
+struct Tie: public std::streambuf { // MSVC requires split streambuf for cin and cout
- Tie(streambuf* b, streambuf* l) : buf(b), logBuf(l) {}
+ Tie(std::streambuf* b, std::streambuf* l) : buf(b), logBuf(l) {}
int sync() override { return logBuf->pubsync(), buf->pubsync(); }
int overflow(int c) override { return log(buf->sputc((char)c), "<< "); }
int underflow() override { return buf->sgetc(); }
int uflow() override { return log(buf->sbumpc(), ">> "); }
- streambuf *buf, *logBuf;
+ std::streambuf *buf, *logBuf;
int log(int c, const char* prefix) {
class Logger {
- Logger() : in(cin.rdbuf(), file.rdbuf()), out(cout.rdbuf(), file.rdbuf()) {}
+ Logger() : in(std::cin.rdbuf(), file.rdbuf()), out(std::cout.rdbuf(), file.rdbuf()) {}
~Logger() { start(""); }
- ofstream file;
+ std::ofstream file;
Tie in, out;
public:
if (l.file.is_open())
{
- cout.rdbuf(l.out.buf);
- cin.rdbuf(l.in.buf);
+ std::cout.rdbuf(l.out.buf);
+ std::cin.rdbuf(l.in.buf);
l.file.close();
}
if (!fname.empty())
{
- l.file.open(fname, ifstream::out);
+ l.file.open(fname, std::ifstream::out);
if (!l.file.is_open())
{
- cerr << "Unable to open debug log file " << fname << endl;
+ std::cerr << "Unable to open debug log file " << fname << std::endl;
exit(EXIT_FAILURE);
}
- cin.rdbuf(&l.in);
- cout.rdbuf(&l.out);
+ std::cin.rdbuf(&l.in);
+ std::cout.rdbuf(&l.out);
}
}
};
/// For releases (non dev builds) we only include the version number:
/// Stockfish version
-string engine_info(bool to_uci) {
- stringstream ss;
- ss << "Stockfish " << version << setfill('0');
+std::string engine_info(bool to_uci) {
+ std::stringstream ss;
+ ss << "Stockfish " << version << std::setfill('0');
if constexpr (version == "dev")
{
#ifdef GIT_DATE
ss << stringify(GIT_DATE);
#else
- constexpr string_view months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
- string month, day, year;
- stringstream date(__DATE__); // From compiler, format is "Sep 21 2008"
+ constexpr std::string_view months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
+ std::string month, day, year;
+ std::stringstream date(__DATE__); // From compiler, format is "Sep 21 2008"
date >> month >> day >> year;
- ss << year << setw(2) << setfill('0') << (1 + months.find(month) / 4) << setw(2) << setfill('0') << day;
+ ss << year << std::setw(2) << std::setfill('0') << (1 + months.find(month) / 4) << std::setw(2) << std::setfill('0') << day;
#endif
ss << "-";
namespace CommandLine {
-string argv0; // path+name of the executable binary, as given by argv[0]
-string binaryDirectory; // path of the executable directory
-string workingDirectory; // path of the working directory
+std::string argv0; // path+name of the executable binary, as given by argv[0]
+std::string binaryDirectory; // path of the executable directory
+std::string workingDirectory; // path of the working directory
void init([[maybe_unused]] int argc, char* argv[]) {
- string pathSeparator;
+ std::string pathSeparator;
// extract the path+name of the executable binary
argv0 = argv[0];
#include "search.h"
#include "thread.h"
-using namespace std;
-
namespace Stockfish {
namespace {
// the initial position ("startpos") and then makes the moves given in the following
// move list ("moves").
- void position(Position& pos, istringstream& is, StateListPtr& states) {
+ void position(Position& pos, std::istringstream& is, StateListPtr& states) {
Move m;
- string token, fen;
+ std::string token, fen;
is >> token;
// setoption() is called when the engine receives the "setoption" UCI command.
// The function updates the UCI option ("name") to the given value ("value").
- void setoption(istringstream& is) {
+ void setoption(std::istringstream& is) {
Threads.main()->wait_for_search_finished();
- string token, name, value;
+ std::string token, name, value;
is >> token; // Consume the "name" token
// sets the thinking time and other parameters from the input string, then starts
// with a search.
- void go(Position& pos, istringstream& is, StateListPtr& states) {
+ void go(Position& pos, std::istringstream& is, StateListPtr& states) {
Search::LimitsType limits;
- string token;
+ std::string token;
bool ponderMode = false;
limits.startTime = now(); // The search starts as early as possible
// Firstly, a list of UCI commands is set up according to the bench
// parameters, then it is run one by one, printing a summary at the end.
- void bench(Position& pos, istream& args, StateListPtr& states) {
+ void bench(Position& pos, std::istream& args, StateListPtr& states) {
- string token;
+ std::string token;
uint64_t num, nodes = 0, cnt = 1;
- vector<string> list = setup_bench(pos, args);
- num = count_if(list.begin(), list.end(), [](const string& s) { return s.find("go ") == 0 || s.find("eval") == 0; });
+ std::vector<std::string> list = setup_bench(pos, args);
+ num = count_if(list.begin(), list.end(), [](const std::string& s) { return s.find("go ") == 0 || s.find("eval") == 0; });
TimePoint elapsed = now();
for (const auto& cmd : list)
{
- istringstream is(cmd);
- is >> skipws >> token;
+ std::istringstream is(cmd);
+ is >> std::skipws >> token;
if (token == "go" || token == "eval")
{
- cerr << "\nPosition: " << cnt++ << '/' << num << " (" << pos.fen() << ")" << endl;
+ std::cerr << "\nPosition: " << cnt++ << '/' << num << " (" << pos.fen() << ")" << std::endl;
if (token == "go")
{
go(pos, is, states);
dbg_print();
- cerr << "\n==========================="
- << "\nTotal time (ms) : " << elapsed
- << "\nNodes searched : " << nodes
- << "\nNodes/second : " << 1000 * nodes / elapsed << endl;
+ std::cerr << "\n==========================="
+ << "\nTotal time (ms) : " << elapsed
+ << "\nNodes searched : " << nodes
+ << "\nNodes/second : " << 1000 * nodes / elapsed << std::endl;
}
// The win rate model returns the probability of winning (in per mille units) given an
void UCI::loop(int argc, char* argv[]) {
Position pos;
- string token, cmd;
+ std::string token, cmd;
StateListPtr states(new std::deque<StateInfo>(1));
pos.set(StartFEN, false, &states->back(), Threads.main());
cmd += std::string(argv[i]) + " ";
do {
- if (argc == 1 && !getline(cin, cmd)) // Wait for an input or an end-of-file (EOF) indication
+ if (argc == 1 && !getline(std::cin, cmd)) // Wait for an input or an end-of-file (EOF) indication
cmd = "quit";
- istringstream is(cmd);
+ std::istringstream is(cmd);
token.clear(); // Avoid a stale if getline() returns nothing or a blank line
- is >> skipws >> token;
+ is >> std::skipws >> token;
if ( token == "quit"
|| token == "stop")
{
std::optional<std::string> filename;
std::string f;
- if (is >> skipws >> f)
+ if (is >> std::skipws >> f)
filename = f;
Eval::NNUE::save_eval(filename);
}
/// mate <y> Mate in 'y' moves (not plies). If the engine is getting mated,
/// uses negative values for 'y'.
-string UCI::value(Value v) {
+std::string UCI::value(Value v) {
assert(-VALUE_INFINITE < v && v < VALUE_INFINITE);
- stringstream ss;
+ std::stringstream ss;
if (abs(v) < VALUE_TB_WIN_IN_MAX_PLY)
ss << "cp " << UCI::to_cp(v);
/// UCI::wdl() reports the win-draw-loss (WDL) statistics given an evaluation
/// and a game ply based on the data gathered for fishtest LTC games.
-string UCI::wdl(Value v, int ply) {
+std::string UCI::wdl(Value v, int ply) {
- stringstream ss;
+ std::stringstream ss;
int wdl_w = win_rate_model( v, ply);
int wdl_l = win_rate_model(-v, ply);
/// standard chess mode and in e1h1 notation it is printed in Chess960 mode.
/// Internally, all castling moves are always encoded as 'king captures rook'.
-string UCI::move(Move m, bool chess960) {
+std::string UCI::move(Move m, bool chess960) {
if (m == MOVE_NONE)
return "(none)";
if (type_of(m) == CASTLING && !chess960)
to = make_square(to > from ? FILE_G : FILE_C, rank_of(from));
- string move = UCI::square(from) + UCI::square(to);
+ std::string move = UCI::square(from) + UCI::square(to);
if (type_of(m) == PROMOTION)
move += " pnbrqk"[promotion_type(m)];
/// UCI::to_move() converts a string representing a move in coordinate notation
/// (g1f3, a7a8q) to the corresponding legal Move, if any.
-Move UCI::to_move(const Position& pos, string& str) {
+Move UCI::to_move(const Position& pos, std::string& str) {
if (str.length() == 5)
str[4] = char(tolower(str[4])); // The promotion piece character must be lowercased
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