X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fuci.cpp;h=9f9d84cca96a680717bf17c89b091de67b0a04c6;hp=caf1b5c2fed08d67084b09c584ba1c7f4c7716c1;hb=c9dcda6ac488c0058ebd567e1f52e30b8cd0db20;hpb=4d120ee02edff250a6661e63d913e70efc37e2b6

diff --git a/src/uci.cpp b/src/uci.cpp
index caf1b5c2..9f9d84cc 100644
--- a/src/uci.cpp
+++ b/src/uci.cpp
@@ -1,7 +1,7 @@
 /*
   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
+  Copyright (C) 2008-2014 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
@@ -27,6 +27,7 @@
 #include "position.h"
 #include "search.h"
 #include "thread.h"
+#include "tt.h"
 #include "ucioption.h"
 
 using namespace std;
@@ -38,8 +39,9 @@ namespace {
   // FEN string of the initial position, normal chess
   const char* StartFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
 
-  // Keep track of position keys along the setup moves (from start position to the
-  // position just before to start searching). Needed by repetition draw detection.
+  // Keep a track of the position keys along the setup moves (from the start position
+  // to the position just before the search starts). This is needed by the repetition
+  // draw detection code.
   Search::StateStackPtr SetupStates;
 
   void setoption(istringstream& up);
@@ -68,11 +70,11 @@ void UCI::loop(const string& args) {
 
       if (token == "quit" || token == "stop" || token == "ponderhit")
       {
-          // GUI sends 'ponderhit' to tell us to ponder on the same move the
+          // The GUI sends 'ponderhit' to tell us to ponder on the same move the
           // opponent has played. In case Signals.stopOnPonderhit is set we are
           // waiting for 'ponderhit' to stop the search (for instance because we
           // already ran out of time), otherwise we should continue searching but
-          // switching from pondering to normal search.
+          // switch from pondering to normal search.
           if (token != "ponderhit" || Search::Signals.stopOnPonderhit)
           {
               Search::Signals.stop = true;
@@ -107,7 +109,7 @@ void UCI::loop(const string& args) {
           Search::RootColor = pos.side_to_move(); // Ensure it is set
           sync_cout << Eval::trace(pos) << sync_endl;
       }
-      else if (token == "ucinewgame") { /* Avoid returning "Unknown command" */ }
+      else if (token == "ucinewgame") TT.clear();
       else if (token == "go")         go(pos, is);
       else if (token == "position")   position(pos, is);
       else if (token == "setoption")  setoption(is);
@@ -120,14 +122,14 @@ void UCI::loop(const string& args) {
 
   } while (token != "quit" && args.empty()); // Args have one-shot behaviour
 
-  Threads.wait_for_think_finished(); // Cannot quit while search is running
+  Threads.wait_for_think_finished(); // Cannot quit whilst the search is running
 }
 
 
 namespace {
 
   // position() is called when engine receives the "position" UCI command.
-  // The function sets up the position described in the given fen string ("fen")
+  // The function sets up the position described in the given FEN string ("fen")
   // or the starting position ("startpos") and then makes the moves given in the
   // following move list ("moves").