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%option nounput
%option yylineno
%{
//
// tikzparser.l
// TikZiT
//
// Copyright 2010 Chris Heunen. All rights reserved.
//
//
// This file is part of TikZiT.
//
// TikZiT is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// TikZiT is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with TikZiT. If not, see <http://www.gnu.org/licenses/>.
//
#import <Foundation/Foundation.h>
#ifdef __APPLE__
#include "y.tab.h"
#else
#include "tikzparser.h"
#endif
extern char linebuff[500];
extern int lineno;
extern int tokenpos;
%}
%%
%\n /* ignore end of line */;
\n.* { strcpy(linebuff, yytext+1);
lineno++;
tokenpos = 0;
yyless(1);
}
[ ]+ { tokenpos += yyleng; } /* ignore whitespace */;
[\t]+ { tokenpos += 4*yyleng; } /* ignore whitespace */;
\\begin { tokenpos += yyleng; return LATEXBEGIN; }
\\end { tokenpos += yyleng; return LATEXEND; }
\{tikzpicture\} { tokenpos += yyleng; return TIKZPICTURE; }
\{pgfonlayer\} { tokenpos += yyleng; return PGFONLAYER; }
\( { tokenpos += yyleng; return LEFTPARENTHESIS; }
\) { tokenpos += yyleng; return RIGHTPARENTHESIS; }
\[ { tokenpos += yyleng; return LEFTBRACKET; }
\] { tokenpos += yyleng; return RIGHTBRACKET; }
; { tokenpos += yyleng; return SEMICOLON; }
, { tokenpos += yyleng; return COMMA; }
\. { tokenpos += yyleng; return FULLSTOP; }
= { tokenpos += yyleng; return EQUALS; }
\\draw { tokenpos += yyleng; return DRAW; }
to { tokenpos += yyleng; return TO; }
\\node { tokenpos += yyleng; return NODE; }
\\path { tokenpos += yyleng; return PATH; }
node { tokenpos += yyleng; return ALTNODE; }
rectangle { tokenpos += yyleng; return RECTANGLE; }
at { tokenpos += yyleng; return AT; }
[0-9]+ {
tokenpos += yyleng;
yylval.nsstr=[NSString stringWithUTF8String:yytext];
return NATURALNUMBER;
}
(\-?[0-9]*\.[0-9]+)|(\-?[0-9]+) {
tokenpos += yyleng;
yylval.nsstr=[NSString stringWithUTF8String:yytext];
return REALNUMBER;
}
\\?[a-zA-Z<>\-\'][a-zA-Z<>\-\'0-9]* { //'
tokenpos += yyleng;
yylval.nsstr=[NSString stringWithUTF8String:yytext];
return LWORD;
}
\{ {
NSMutableString *buf = [NSMutableString string];
unsigned int brace_depth = 1;
unsigned int escape = 0;
while (1) {
char c = input();
// eof reached before closing brace
if (c == '\0' || c == EOF) yyterminate();
if (escape) {
escape = 0;
} else if (c == '\\') {
escape = 1;
} else if (c == '{') {
brace_depth++;
} else if (c == '}') {
brace_depth--;
if (brace_depth == 0) break;
}
[buf appendFormat:@"%c", c];
}
NSString *s = [buf copy];
yyleng += 1 + [buf length];
[s autorelease];
yylval.nsstr = s;
tokenpos += yyleng;
return DELIMITEDSTRING;
}
/* vi:ft=lex:noet:ts=4:sts=4:sw=4:
*/
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