netsurf/css/scanner.l

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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2003 James Bursa <bursa@users.sourceforge.net>
*/
%{
#include "parser.h"
%}
%option 8bit
%option batch
%option case-insensitive
%option header-file="scanner.h"
%option outfile="scanner.c"
%option prefix="css_"
%option reentrant
%option never-interactive
%option noyywrap
%option yylineno
/* see CSS2 Specification, chapter 4
http://www.w3.org/TR/REC-CSS2/syndata.html,
and errata
http://www.w3.org/Style/css2-updates/REC-CSS2-19980512-errata */
ident {nmstart}{nmchar}*
name {nmchar}+
nmstart [a-zA-Z_]|{nonascii}|{escape}
nonascii [\200-\377]
unicode \\[0-9a-f]{1,6}[ \n\r\t\f]?
escape {unicode}|\\[ -~\200-\377]
nmchar [-a-zA-Z0-9_]|{nonascii}|{escape}
num [+-]?[0-9]+|[0-9]*\.[0-9]+
string {string1}|{string2}
string1 \"([\t !#$%&(-~]|\\{nl}|\'|{nonascii}|{escape})*\"
string2 \'([\t !#$%&(-~]|\\{nl}|\"|{nonascii}|{escape})*\'
nl \n|\r\n|\r|\f
w [ \t\r\n\f]*
%%
{ident} { return IDENT; }
@{ident} { return ATKEYWORD; }
{string} { return STRING; }
#{name} { return HASH; }
{num} { return NUMBER; }
{num}% { return PERCENTAGE; }
{num}{ident} { return DIMENSION; }
url\({w}{string}{w}\)|url\({w}([!#$%&*-~]|{nonascii}|{escape})*{w}\) {
return URI; }
U\+[0-9A-F?]{1,6}(-[0-9A-F]{1,6})? {
return UNICODE_RANGE; }
"<!--" /* ignore CDO */
"-->" /* ignore CDC */
; { return SEMI; }
\{ { return LBRACE; }
\} { return RBRACE; }
\( { return LPAREN; }
\) { return RPAREN; }
\[ { return LBRAC; }
\] { return RBRAC; }
[ \t\r\n\f]+ /* ignore whitespace */
\/\*[^*]*\*+([^/][^*]*\*+)*\/ /* ignore comments */
{ident}\( { return FUNCTION; }
= { return EQUALS; }
~= { return INCLUDES; }
"|=" { return DASHMATCH; }
: { return COLON; }
, { return COMMA; }
"+" { return PLUS; }
> { return GT; }
"." { return DOT; }
. { return DELIM; }
%%