add Winboard source files into tar-ball

[xboard.git] / parser.l

diff --git a/parser.l b/parser.l
index 29a2fa9..7dda43f 100755 (executable)
--- a/parser.l
+++ b/parser.l
@@ -7,12 +7,12 @@
 %{\r
 /*\r
  * parser.l -- lex parser of algebraic chess moves for XBoard\r
- * $Id: parser.l,v 2.1 2003/10/27 19:21:00 mann Exp $\r
  *\r
  * Copyright 1991 by Digital Equipment Corporation, Maynard,\r
- * Massachusetts.  Enhancements Copyright\r
- * 1992-2001,2002,2003,2004,2005,2006,2007,2008,2009 Free Software\r
- * Foundation, Inc.\r
+ * Massachusetts.\r
+ *\r
+ * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005,\r
+ * 2006, 2007, 2008, 2009 Free Software Foundation, Inc.\r
  *\r
  * The following terms apply to Digital Equipment Corporation's copyright\r
  * interest in XBoard:\r
@@ -244,8 +244,6 @@ extern void CopyBoard P((Board to, Board from));
 \r
     result = LegalityTest(boards[yyboardindex],\r
                          PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
-                         EP_UNKNOWN,\r
-                          initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
                           currentMoveString[3] - ONE,\r
@@ -306,8 +304,6 @@ extern void CopyBoard P((Board to, Board from));
 \r
     result = LegalityTest(boards[yyboardindex],\r
                          PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
-                         EP_UNKNOWN,\r
-                          initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
                           currentMoveString[3] - ONE,\r
@@ -360,8 +356,7 @@ extern void CopyBoard P((Board to, Board from));
       return IllegalMove;\r
 \r
 \r
-    Disambiguate(boards[yyboardindex],\r
-                PosFlags(yyboardindex), EP_UNKNOWN, &cl);\r
+    Disambiguate(boards[yyboardindex], PosFlags(yyboardindex), &cl);\r
 \r
     currentMoveString[0] = cl.ff + AAA;\r
     currentMoveString[1] = cl.rf + ONE;\r
@@ -415,8 +410,7 @@ extern void CopyBoard P((Board to, Board from));
     if(c != '=' && c != '+' && c != NULLCHAR && CharToPiece(c) == EmptySquare)\r
       return IllegalMove;\r
 \r
-    Disambiguate(boards[yyboardindex],\r
-                PosFlags(yyboardindex), EP_UNKNOWN, &cl);\r
+    Disambiguate(boards[yyboardindex], PosFlags(yyboardindex), &cl);\r
 \r
     currentMoveString[0] = cl.ff + AAA;\r
     currentMoveString[1] = cl.rf + ONE;\r
@@ -470,9 +464,13 @@ extern void CopyBoard P((Board to, Board from));
     if (WhiteOnMove(yyboardindex)) {\r
         if (yytext[2+skip] == ONE) return (int) ImpossibleMove;\r
        currentMoveString[1] = yytext[2+skip] - 1;\r
+       if(boards[yyboardindex][currentMoveString[1]-ONE][currentMoveString[0]-AAA] != WhitePawn) \r
+               return ImpossibleMove;\r
     } else {\r
         currentMoveString[1] = currentMoveString[3] + 1;\r
         if (currentMoveString[3] == ONE+BOARD_HEIGHT-1) return (int) ImpossibleMove;\r
+       if(boards[yyboardindex][currentMoveString[1]-ONE][currentMoveString[0]-AAA] != BlackPawn) \r
+               return ImpossibleMove;\r
     }\r
     if (yyleng-skip > 3) {\r
        if (yytext[yyleng-1] == ')')\r
@@ -488,8 +486,6 @@ extern void CopyBoard P((Board to, Board from));
 \r
     result = LegalityTest(boards[yyboardindex],\r
                          PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
-                         EP_UNKNOWN,\r
-                          initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
                           currentMoveString[3] - ONE,\r
@@ -529,8 +525,6 @@ extern void CopyBoard P((Board to, Board from));
 \r
     result = LegalityTest(boards[yyboardindex],\r
                          PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
-                         EP_UNKNOWN,\r
-                          initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
                           currentMoveString[3] - ONE,\r
@@ -587,8 +581,7 @@ extern void CopyBoard P((Board to, Board from));
        cl.ftIn <  BOARD_LEFT     )\r
       return 0;\r
 \r
-    Disambiguate(boards[yyboardindex],\r
-                PosFlags(yyboardindex), EP_UNKNOWN, &cl);\r
+    Disambiguate(boards[yyboardindex], PosFlags(yyboardindex), &cl);\r
 \r
     currentMoveString[0] = cl.ff + AAA;\r
     currentMoveString[1] = cl.rf + ONE;\r
@@ -648,8 +641,7 @@ extern void CopyBoard P((Board to, Board from));
        cl.ftIn <  BOARD_LEFT     )\r
       return 0;\r
 \r
-    Disambiguate(boards[yyboardindex],\r
-                PosFlags(yyboardindex), EP_UNKNOWN, &cl);\r
+    Disambiguate(boards[yyboardindex], PosFlags(yyboardindex), &cl);\r
 \r
     currentMoveString[0] = cl.ff + AAA;\r
     currentMoveString[1] = cl.rf + ONE;\r
@@ -702,7 +694,10 @@ extern void CopyBoard P((Board to, Board from));
             ff = initialRights[5];\r
             ft = initialRights[4];\r
         }\r
-        fprintf(debugFP, "Parser FRC long %d %d\n", ff, ft);\r
+        if (appData.debugMode) \r
+        {\r
+          fprintf(debugFP, "Parser FRC long %d %d\n", ff, ft);\r
+        };\r
         if(ff < 0 || ft < 0) return 0;\r
     }\r
     sprintf(currentMoveString, "%c%c%c%c",ff+AAA,rf+ONE,ft+AAA,rt+ONE);\r
@@ -711,8 +706,6 @@ extern void CopyBoard P((Board to, Board from));
     }\r
     return (int) LegalityTest(boards[yyboardindex],\r
                              PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: e.p.!\r
-                             EP_UNKNOWN,\r
-                              castlingRights[yyboardindex], /* [HGM] use true castling rights */\r
                              rf, ff, rt, ft, NULLCHAR);\r
 }\r
 \r
@@ -768,8 +761,6 @@ extern void CopyBoard P((Board to, Board from));
 \r
     return (int) LegalityTest(boards[yyboardindex],\r
                              PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: e.p.!\r
-                             EP_UNKNOWN,\r
-                              castlingRights[yyboardindex], /* [HGM] use true castling rights */\r
                              rf, ff, rt, ft, NULLCHAR);\r
 }\r
 \r
@@ -842,11 +833,11 @@ extern void CopyBoard P((Board to, Board from));
     return (int) GameIsDrawn;\r
 }\r
 \r
-(([Ww](hite)?)|([Bb](lack)?))" "([Mm]ate(s|ed)?)|([Ww][io]n(s)?.*)  {\r
+(([Ww](hite)?)|([Bb](lack)?))" "(([Mm]ates)|([Ww][io]n(s)?)) { \r
     return (int) (ToUpper(yytext[0]) == 'W' ? WhiteWins : BlackWins);\r
 }\r
 \r
-(([Ww](hite)?)|([Bb](lack)?))" "([Mm]ate(s|ed)?)|([Ll]os[tes]+.*)  {\r
+(([Ww](hite)?)|([Bb](lack)?))" "(([Mm]ated)|([Ll]os[tes]+)) { \r
     return (int) (ToUpper(yytext[0]) == 'W' ? BlackWins : WhiteWins);\r
 }\r
 \r
@@ -915,7 +906,7 @@ extern void CopyBoard P((Board to, Board from));
     return (int) Comment; \r
 }\r
 \r
-\([^()]*(\([^()]*\)[^()]*)+[^()]*\)  {                 /* nested () */\r
+\([^()]*(\([^()]*(\([^()]*(\([^()]*\)[^()]*)*\)[^()]*)*\)[^()]*)+[^()]*\)  { /* very nested () */\r
     return (int) Comment; \r
 }\r
 \r
@@ -981,7 +972,7 @@ int yyoffset()
 static void output(ch)\r
      int ch;\r
 {\r
-    fprintf(stderr, "PARSER BUG: unmatched character '%c' (0%o)\n",\r
+    if(appData.debugMode) fprintf(debugFP, "PARSER BUG: unmatched character '%c' (0%o)\n",\r
            ch, ch);\r
 }\r
 \r
@@ -993,7 +984,7 @@ static void unput(ch)
        StringToLex--;\r
     } else {\r
        if (unputCount >= UNPUT_BUF_SIZE)\r
-         fprintf(stderr, "PARSER BUG: unput buffer overflow '%c' (0%o)\n",\r
+         if(appData.debugMode) fprintf(debugFP, "PARSER BUG: unput buffer overflow '%c' (0%o)\n",\r
                  ch, ch);\r
        unputBuffer[unputCount++] = ch;\r
     }\r