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%{
/*
* Copyright 2010 Chris Heunen
* Copyright 2010-2013 Aleks Kissinger
* Copyright 2013 K. Johan Paulsson
* Copyright 2013 Alex Merry <dev@randomguy3.me.uk>
*
* This program 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 2 of
* the License, or (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#import <Foundation/Foundation.h>
#import "tikzparser.h"
#define YY_USER_ACTION \
yylloc->first_line = yylloc->last_line; \
if (yylloc->last_line != 1 || yylloc->last_column != 1) \
yylloc->first_column = yylloc->last_column + 1; \
yylloc->last_column = yylloc->first_column + yyleng;
%}
%option reentrant bison-bridge bison-locations 8bit
%option nounput
%option yylineno
%option noyywrap
%option header-file="common/tikzlexer.h"
%s props
%s xcoord
%s ycoord
%s noderef
FLOAT \-?[0-9]*(\.[0-9]+)?
%%
\n {
yylloc->first_line += 1;
yylloc->last_line = yylloc->first_line;
yylloc->first_column = yylloc->last_column = 0;
}
<INITIAL,xcoord,ycoord,props,noderef>[ ]+ { } /* ignore whitespace */;
<INITIAL,xcoord,ycoord,props,noderef>[\t]+ {
// tab = 8 columns
// note that we have already adjusted by yyleng at this point
yylloc->last_column = yylloc->first_column + 7*yyleng;
}
\\begin\{tikzpicture\} { return BEGIN_TIKZPICTURE_CMD; }
\\end\{tikzpicture\} { return END_TIKZPICTURE_CMD; }
\\begin\{pgfonlayer\} { return BEGIN_PGFONLAYER_CMD; }
\\end\{pgfonlayer\} { return END_PGFONLAYER_CMD; }
\\draw { return DRAW_CMD; }
\\node { return NODE_CMD; }
\\path { return PATH_CMD; }
rectangle { return RECTANGLE; }
node { return NODE; }
at { return AT; }
to { return TO; }
; { return SEMICOLON; }
\([ ]*{FLOAT}[ ]*,[ ]*{FLOAT}[ ]*\) {
yylloc->last_column = yylloc->first_column + 1;
yyless(1);
BEGIN(xcoord);
}
<xcoord>{FLOAT} {
yylval->pt.x=(float)strtod(yytext,NULL);
BEGIN(ycoord);
}
<ycoord>, { }
<ycoord>{FLOAT} {
yylval->pt.y=(float)strtod(yytext,NULL);
}
<ycoord>\) {
BEGIN(INITIAL);
return COORD;
}
/* when we see "[", change parsing mode */
\[ /*syntaxhlfix]*/ {
BEGIN(props);
return LEFTBRACKET;
}
<props>= { return EQUALS; }
<props>, { return COMMA; }
<props>[^=,\{\] \t]([^=,\{\]]*[^=,\{\] \t])? {
yylval->nsstr=[NSString stringWithUTF8String:yytext];
return PROPSTRING;
}
<props>\] {
BEGIN(INITIAL);
return RIGHTBRACKET;
}
\( {
BEGIN(noderef);
return LEFTPARENTHESIS;
}
<noderef>\. {
return FULLSTOP;
}
<noderef>[^\.\{\)]+ {
yylval->nsstr=[NSString stringWithUTF8String:yytext];
return REFSTRING;
}
<noderef>\) {
BEGIN(INITIAL);
return RIGHTPARENTHESIS;
}
<INITIAL,props>\{ {
NSMutableString *buf = [NSMutableString string];
unsigned int brace_depth = 1;
unsigned int escape = 0;
while (1) {
char c = input(yyscanner);
// eof reached before closing brace
if (c == '\0' || c == EOF) {
return UNCLOSED_DELIM_STR;
}
yylloc->last_column += 1;
yyleng += 1;
if (escape) {
escape = 0;
} else if (c == '\\') {
escape = 1;
} else if (c == '{') {
brace_depth++;
} else if (c == '}') {
brace_depth--;
if (brace_depth == 0) break;
} else if (c == '\n') {
yylloc->last_line += 1;
yylloc->last_column = 0;
}
[buf appendFormat:@"%c", c];
}
NSString *s = [buf copy];
[s autorelease];
yylval->nsstr = s;
return DELIMITEDSTRING;
}
\\begin { return UNKNOWN_BEGIN_CMD; }
\\end { return UNKNOWN_END_CMD; }
\\[a-zA-Z]+[a-zA-Z0-9]* { return UNKNOWN_CMD; }
. { return UNKNOWN_STR; }
/* vi:ft=lex:noet:ts=4:sts=4:sw=4:
*/
|
