Don't copy Position in pretty_pv()

[stockfish] / src / uci.cpp

diff --git a/src/uci.cpp b/src/uci.cpp
index 1b10c7b418697c969f00d8f8b9a4e0ed938db3db..c6d090d2982c33594f3ba1f0c345d029cf59da29 100644 (file)
--- a/src/uci.cpp
+++ b/src/uci.cpp
@@ -23,6 +23,7 @@
 ////
 
 #include <cassert>
+#include <cctype>
 #include <iostream>
 #include <sstream>
 #include <string>
@@ -32,7 +33,6 @@
 #include "move.h"
 #include "movegen.h"
 #include "position.h"
-#include "san.h"
 #include "search.h"
 #include "ucioption.h"
 
@@ -49,10 +49,10 @@ namespace {
   typedef istringstream UCIParser;
 
   // Local functions
-  void set_option(UCIParser& uip);
-  void set_position(Position& pos, UCIParser& uip);
-  bool go(Position& pos, UCIParser& uip);
-  void perft(Position& pos, UCIParser& uip);
+  void set_option(UCIParser& up);
+  void set_position(Position& pos, UCIParser& up);
+  bool go(Position& pos, UCIParser& up);
+  void perft(Position& pos, UCIParser& up);
 }
 
 
@@ -140,7 +140,7 @@ namespace {
 
   void set_position(Position& pos, UCIParser& up) {
 
-    string token;
+    string fen, token;
 
     if (!(up >> token) || (token != "startpos" && token != "fen"))
         return;
@@ -148,38 +148,19 @@ namespace {
     if (token == "startpos")
     {
         pos.from_fen(StartPositionFEN, false);
-        if (!(up >> token))
-            return;
+        up >> token; // Consume "moves" token
     }
     else // fen
     {
-        string fen;
         while (up >> token && token != "moves")
-        {
-            fen += token;
-            fen += ' ';
-        }
+            fen += token + string(" ");
+
         pos.from_fen(fen, Options["UCI_Chess960"].value<bool>());
     }
 
-    if (token != "moves")
-        return;
-
-    // Parse optional move list
-    Move move;
-    StateInfo st;
+    // Parse move list (if any)
     while (up >> token)
-    {
-        move = move_from_uci(pos, token);
-        pos.do_move(move, st);
-        if (pos.rule_50_counter() == 0)
-            pos.reset_game_ply();
-
-        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 pos before it disappears.
-    pos.detach();
+        pos.do_setup_move(move_from_uci(pos, token));
   }
 
 
@@ -287,7 +268,8 @@ namespace {
 
   void perft(Position& pos, UCIParser& up) {
 
-    int depth, tm, n;
+    int depth, tm;
+    int64_t n;
 
     if (!(up >> depth))
         return;