* Ranks can be 0-9. The parser returns 0 for off-board files and ranks.
* For an unknown piece (as mover or promotion piece) it returns
* IllegalMove, like it does when the piece doesn't match.
- * Promotions can now also be appended Shogi-style, a bare '=' or '^',
+ * Promotions can now also be appended Shogi-style, a bare '=' or '+',
* and this is then returned as promotion character. The piece indicator
* can be prefixed by a '+' to indicate it is a promoted piece.
*/
%}
%%
-"+"?[A-Z][/]?[a-l][0-9][xX:-]?[a-l][0-9]((=?\(?[A-Z]\)?)|[=^])? {
+"+"?[A-Z][/]?[a-l][0-9][xX:-]?[a-l][0-9]((=?\(?[A-Z]\)?)|[=+])? {
/*
* Fully-qualified algebraic move, possibly with promotion
*/
} else {
c = currentMoveString[4] = ToLower(yytext[yyleng-1]);
}
+ if(c == '+' && gameInfo.variant != VariantShogi) c = currentMoveString[4] = NULLCHAR; // + means check outside Shogi
currentMoveString[5] = NULLCHAR;
}
else if(gameInfo.variant == VariantGreat)
currentMoveString[4] = PieceToChar(BlackMan);
else if(gameInfo.variant == VariantShogi)
- currentMoveString[4] = '^';
+ currentMoveString[4] = '+';
else
currentMoveString[4] = PieceToChar(BlackQueen);
} else if(result == WhiteNonPromotion || result == BlackNonPromotion)
return (int) result;
}
-[a-l][0-9][xX:-]?[a-l][0-9]((=?\(?[A-Za-z]\)?)|[=^])? {
+[a-l][0-9][xX:-]?[a-l][0-9]((=?\(?[A-Za-z]\)?)|[=+])? {
/*
* Simple algebraic move, possibly with promotion
* [HGM] Engine moves are received in this format, with lower-case promoChar!
} else {
c = currentMoveString[4] = ToLower(yytext[yyleng-1]);
}
+ if(c == '+' && gameInfo.variant != VariantShogi) c = currentMoveString[4] = NULLCHAR; // + means check outside Shogi
currentMoveString[5] = NULLCHAR;
}
else if(gameInfo.variant == VariantGreat)
currentMoveString[4] = PieceToChar(BlackMan);
else if(gameInfo.variant == VariantShogi)
- currentMoveString[4] = '^'; // Queen might not be defined in mini variants!
+ currentMoveString[4] = '+'; // Queen might not be defined in mini variants!
else
currentMoveString[4] = PieceToChar(BlackQueen);
} else if(result == WhiteNonPromotion || result == BlackNonPromotion)
return (int) result;
}
-[a-l][0-9]((=?\(?[A-Za-z]\)?)|[=^])? {
+[a-l][0-9]((=?\(?[A-Za-z]\)?)|[=+])? {
/*
* Pawn move, possibly with promotion
*/
cl.ffIn = yytext[0] - AAA;
cl.rtIn = yytext[1] - ONE;
cl.ftIn = yytext[0] - AAA;
- c = cl.promoCharIn = ToLower(yytext[2+skip]);
+ cl.promoCharIn = ToLower(yytext[2+skip]);
+ if(cl.promoCharIn == '+' && gameInfo.variant != VariantShogi) cl.promoCharIn = NULLCHAR; // + means check outside Shogi
/* [HGM] do not allow values beyond board size */
if(cl.rtIn >= BOARD_HEIGHT ||
cl.ffIn = yytext[0] - AAA;
cl.rtIn = -1;
cl.ftIn = yytext[1+skip1] - AAA;
- c = cl.promoCharIn = yytext[2+skip1+skip2];
+ cl.promoCharIn = yytext[2+skip1+skip2];
+ if(cl.promoCharIn == '+' && gameInfo.variant != VariantShogi) cl.promoCharIn = NULLCHAR; // + means check outside Shogi
/* [HGM] do not allow values beyond board size */
if(cl.ffIn >= BOARD_RGHT ||
return (int) cl.kind;
}
-[a-l][xX:]?[a-l][0-9]((=?\(?[A-Z]\)?)|ep|"e.p."|[=^])? {
+[a-l][xX:]?[a-l][0-9]((=?\(?[A-Z]\)?)|ep|"e.p."|[=+])? {
/*
* unambiguously abbreviated Pawn capture, possibly with promotion
*/
else
c = currentMoveString[4] = ToLower(yytext[yyleng-1]);
currentMoveString[5] = NULLCHAR;
- if(c != '=' && c != '^' && CharToPiece(c) == EmptySquare)
- return ImpossibleMove;
+ if(c == '+' && gameInfo.variant != VariantShogi) c = currentMoveString[4] = NULLCHAR; // + means check outside Shogi
} else {
currentMoveString[4] = NULLCHAR;
}
if(gameInfo.variant == VariantGreat)
currentMoveString[4] = PieceToChar(BlackMan);
if(gameInfo.variant == VariantShogi)
- currentMoveString[4] = '^';
+ currentMoveString[4] = '+';
} else if(result == WhiteNonPromotion || result == BlackNonPromotion)
currentMoveString[4] = '=';
currentMoveString[5] = NULLCHAR;
return (int) IllegalMove;
}
-"+"?[A-Z][xX:-]?[a-l][0-9]((=?\(?[A-Z]\)?)|[=^])? {
+"+"?[A-Z][xX:-]?[a-l][0-9]((=?\(?[A-Z]\)?)|[=+])? {
/*
* piece move, possibly ambiguous
*/
cl.ftIn = yytext[1+skip] - AAA;
cl.promoCharIn = NULLCHAR;
- if(yyleng-skip > 3) /* [HGM] can have Shogi-style promotion */
+ if(yyleng-skip > 3 && gameInfo.variant == VariantShogi) /* [HGM] can have Shogi-style promotion */
cl.promoCharIn = yytext[yyleng-1-(yytext[yyleng-1]==')')];
+ if(cl.promoCharIn == '+' && gameInfo.variant != VariantShogi) cl.promoCharIn = NULLCHAR; // + means check outside Shogi
if (appData.debugMode) {
fprintf(debugFP, "Parser Qa1: yyleng=%d, %d(%d,%d)-(%d,%d) = %d (%c)\n",
return (int) cl.kind;
}
-"+"?[A-Z][a-l0-9][xX:-]?[a-l][0-9]((=?\(?[A-Z]\)?)|[=^])? {
+"+"?[A-Z][a-l0-9][xX:-]?[a-l][0-9]((=?\(?[A-Z]\)?)|[=+])? {
/*
* piece move with rank or file disambiguator
*/
if(yyleng-skip > 4) /* [HGM] can have Shogi-style promotion */
cl.promoCharIn = yytext[yyleng-1-(yytext[yyleng-1]==')')];
+ if(cl.promoCharIn == '+' && gameInfo.variant != VariantShogi) cl.promoCharIn = NULLCHAR; // + means check outside Shogi
/* [HGM] do not allow values beyond board size */
if(cl.rtIn >= BOARD_HEIGHT ||
return (int) GameUnfinished;
}
-[1-9][0-9]*/"."?[ \t\n]*[a-lNnPpRrBQqKACFEWDGHOo] {
+[1-9][0-9]*/"."?[ \t\n]*[a-lnprqoA-Z+] {
/* move numbers */
if ((yyleng == 1) && (yytext[0] == '1'))
return (int) MoveNumberOne;
+ else return (int) Nothing; // [HGM] make sure something is returned, for gathering parsed text
}
\([0-9]+:[0-9][0-9](\.[0-9]+)?\)|\{[0-9]+:[0-9][0-9](\.[0-9]+)?\} {
return (int) Comment;
}
-\([^()]*(\([^()]*(\([^()]*(\([^()]*\)[^()]*)*\)[^()]*)*\)[^()]*)+[^()]*\) { /* very nested () */
- return (int) Comment;
+\( { /* Opening parentheses */
+ return (int) Open;
}
-\([^)][^)]+\) { /* >=2 chars in () */
- return (int) Comment;
+\) { /* closing parentheses */
+ return (int) Close;
}
^[-a-zA-Z0-9]+:" ".*(\n[ \t]+.*)* {
- /* Skip mail headers */
+ return (int) Nothing; /* Skip mail headers */
}
[a-zA-Z0-9'-]+ {
- /* Skip random words */
+ return (int) Nothing; /* Skip random words */
}
.|\n {
- /* Skip everything else */
+ return (int) Nothing; /* Skip everything else */
}
%%
yy_switch_to_buffer(buffer);
#endif /*FLEX_SCANNER*/
- ret = (ChessMove) yylex();
+ ret = (ChessMove) Myylex();
strncpy(text, yy_text, len-1); // [HGM] vari: yy_text is not available to caller after buffer switch ?!?
text[len-1] = NULLCHAR;
return ret;
}
+
+int Myylex()
+{ // [HGM] wrapper for yylex, which treats nesting of parentheses
+ int symbol, nestingLevel = 0, i=0;
+ char *p;
+ static char buf[256*MSG_SIZ];
+ buf[0] = NULLCHAR;
+ do { // eat away anything not at level 0
+ symbol = yylex();
+ if(symbol == Open) nestingLevel++;
+ if(nestingLevel) { // save all parsed text between (and including) the ()
+ for(p=yytext; *p && i<256*MSG_SIZ-2;) buf[i++] = *p++;
+ buf[i] = NULLCHAR;
+ }
+ if(symbol == 0) break; // ran into EOF
+ if(symbol == Close) symbol = Comment, nestingLevel--;
+ } while(nestingLevel || symbol == Nothing);
+ yy_text = buf[0] ? buf : (char*)yytext;
+ return symbol;
+}
projects / xboard.git / blobdiff