X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=parser.c;h=e0b4ff44c035e06555594b77203fdd2444ec4d95;hb=1c03d229073e56dda9e5856db5adaae51576a3bb;hp=a0a7ad175335fd2aed825ee1802070eac9a03364;hpb=e70077aab0199817f37aef9ed0bdba1bbca93b45;p=xboard.git diff --git a/parser.c b/parser.c index a0a7ad1..e0b4ff4 100644 --- a/parser.c +++ b/parser.c @@ -1,7 +1,7 @@ /* * parser.c -- * - * Copyright 2011, 2012 Free Software Foundation, Inc. + * Copyright 2011, 2012, 2013 Free Software Foundation, Inc. * ------------------------------------------------------------------------ * * GNU XBoard is free software: you can redistribute it and/or modify @@ -51,7 +51,8 @@ static char fromString = 0, lastChar = '\n'; #define ALPHABETIC 2 #define BADNUMBER (-2000000000) -int ReadLine() +int +ReadLine () { // Read one line from the input file, and append to the buffer char c, *start = inPtr; if(fromString) return 0; // parsing string, so the end is a hard end @@ -66,7 +67,8 @@ int ReadLine() return 1; } -int Scan(char c, char **p) +int +Scan (char c, char **p) { // line-spanning skip to mentioned character or EOF do { while(**p) if(*(*p)++ == c) return 0; @@ -75,7 +77,8 @@ int Scan(char c, char **p) return 1; } -int SkipWhite(char **p) +int +SkipWhite (char **p) { // skip spaces tabs and newlines; return 1 if anything was skipped char *start = *p; do{ @@ -84,7 +87,8 @@ int SkipWhite(char **p) return *p != start; } -inline int Match(char *pattern, char **ptr) +inline int +Match (char *pattern, char **ptr) { char *p = pattern, *s = *ptr; while(*p && (*p == *s++ || s[-1] == '\r' && *p--)) p++; @@ -95,7 +99,8 @@ inline int Match(char *pattern, char **ptr) return 0; // no match, no ptr update } -inline int Word(char *pattern, char **p) +inline int +Word (char *pattern, char **p) { if(Match(pattern, p)) return 1; if(*pattern >= 'a' && *pattern <= 'z' && *pattern - **p == 'a' - 'A') { // capitalized @@ -106,15 +111,16 @@ inline int Word(char *pattern, char **p) return 0; } -int Verb(char *pattern, char **p) +int +Verb (char *pattern, char **p) { int res = Word(pattern, p); if(res && !Match("s", p)) Match("ed", p); // eat conjugation suffix, if any return res; } - -int Number(char **p) +int +Number (char **p) { int val = 0; if(**p < '0' || **p > '9') return BADNUMBER; @@ -124,7 +130,8 @@ int Number(char **p) return val; } -int RdTime(char c, char **p) +int +RdTime (char c, char **p) { char *start = ++(*p), *sec; // increment *p, as it was pointing to the opening ( or { if(Number(p) == BADNUMBER) return 0; @@ -139,19 +146,21 @@ int RdTime(char c, char **p) return 0; } -char PromoSuffix(char **p) +char +PromoSuffix (char **p) { char *start = *p; if(**p == 'e' && (Match("ep", p) || Match("e.p.", p))) { *p = start; return NULLCHAR; } // non-compliant e.p. suffix is no promoChar! - if(**p == '+' && gameInfo.variant == VariantShogi) { (*p)++; return '+'; } + if(**p == '+' && gameInfo.variant == VariantShogi) { (*p)++; return '+'; } if(**p == '=' || (gameInfo.variant == VariantSChess) && **p == '/') (*p)++; // optional = (or / for Seirawan gating) - if(**p == '(' && (*p)[2] == ')' && isalpha( (*p)[1] )) { (*p) += 3; return (*p)[-2]; } - if(isalpha(**p)) return *(*p)++; + if(**p == '(' && (*p)[2] == ')' && isalpha( (*p)[1] )) { (*p) += 3; return ToLower((*p)[-2]); } + if(isalpha(**p)) return ToLower(*(*p)++); if(*p != start) return '='; // must be the optional = return NULLCHAR; // no suffix detected } -int NextUnit(char **p) +int +NextUnit (char **p) { // Main parser routine int coord[4], n, result, piece, i; char type[4], promoted, separator, slash, *oldp, *commentEnd, c; @@ -211,10 +220,9 @@ int NextUnit(char **p) type[1] = NOTHING; // disambiguator goes in first two positions n = 4; } -if(appData.debugMode)fprintf(debugFP, "trial %d,%d,%d,%d type %d%d%d%d\n", coord[0], coord[1], coord[2], coord[3], type[0], type[1], type[2], type[3]); // we always get here; move must be completely read now, with to-square coord(s) at end if(n == 3) { // incomplete to-square. Could be Xiangqi traditional, or stuff like fxg - if(piece && type[1] == NOTHING && type[0] == NUMERIC && type[2] == NUMERIC && + if(piece && type[1] == NOTHING && type[0] == NUMERIC && type[2] == NUMERIC && (separator == '+' || separator == '=' || separator == '-')) { // Xiangqi traditional @@ -326,7 +334,7 @@ badMove:// we failed to find algebraic move if(**p == '[') { oldp = ++(*p); if(Match("--", p)) { // "[--" could be start of position diagram - if(!Scan(']', p) && (*p)[-3] == '-' && (*p)[-2] == '-') return PositionDiagram; + if(!Scan(']', p) && (*p)[-3] == '-' && (*p)[-2] == '-') return PositionDiagram; *p = oldp; } SkipWhite(p); @@ -347,7 +355,7 @@ badMove:// we failed to find algebraic move // ********* SAN Castings ************************************* if(**p == 'O' || **p == 'o' || **p == '0') { int castlingType = 0; - if(Match("O-O-O", p) || Match("o-o-o", p) || Match("0-0-0", p) || + if(Match("O-O-O", p) || Match("o-o-o", p) || Match("0-0-0", p) || Match("OOO", p) || Match("ooo", p) || Match("000", p)) castlingType = 2; else if(Match("O-O", p) || Match("o-o", p) || Match("0-0", p) || Match("OO", p) || Match("oo", p) || Match("00", p)) castlingType = 1; @@ -533,12 +541,14 @@ badMove:// we failed to find algebraic move /* Return offset of next pattern in the current file. */ -int yyoffset() +int +yyoffset () { return ftell(inputFile) - (inPtr - parsePtr); // subtract what is read but not yet parsed } -void yynewfile (FILE *f) +void +yynewfile (FILE *f) { // prepare parse buffer for reading file inputFile = f; inPtr = parsePtr = inputBuf; @@ -547,14 +557,16 @@ void yynewfile (FILE *f) *inPtr = NULLCHAR; // make sure we will start by reading a line } -void yynewstr P((char *s)) +void +yynewstr P((char *s)) { parsePtr = s; inputFile = NULL; fromString = 1; } -int yylex() +int +yylex () { // this replaces the flex-generated parser int result = NextUnit(&parsePtr); char *p = parseStart, *q = yytext; @@ -564,7 +576,8 @@ int yylex() return result; } -int Myylex() +int +Myylex () { // [HGM] wrapper for yylex, which treats nesting of parentheses int symbol, nestingLevel = 0, i=0; char *p; @@ -584,7 +597,8 @@ int Myylex() return symbol; } -ChessMove yylexstr(int boardIndex, char *s, char *buf, int buflen) +ChessMove +yylexstr (int boardIndex, char *s, char *buf, int buflen) { ChessMove ret; char *savPP = parsePtr; @@ -598,4 +612,3 @@ ChessMove yylexstr(int boardIndex, char *s, char *buf, int buflen) fromString = 0; return ret; } -