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https://github.com/netsurf-browser/netsurf
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1975b5cd1a
Implement CSS attribute selectors and parent / preceding combinators. svn path=/import/netsurf/; revision=324
78 lines
1.9 KiB
Plaintext
78 lines
1.9 KiB
Plaintext
/*
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* This file is part of NetSurf, http://netsurf.sourceforge.net/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2003 James Bursa <bursa@users.sourceforge.net>
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*/
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%{
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#include "parser.h"
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%}
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%option 8bit
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%option batch
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%option case-insensitive
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%option header-file="scanner.h"
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%option outfile="scanner.c"
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%option prefix="css_"
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%option reentrant
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%option never-interactive
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%option noyywrap
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/* see CSS2 Specification, chapter 4
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http://www.w3.org/TR/REC-CSS2/syndata.html,
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and errata
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http://www.w3.org/Style/css2-updates/REC-CSS2-19980512-errata */
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ident {nmstart}{nmchar}*
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name {nmchar}+
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nmstart [a-zA-Z_]|{nonascii}|{escape}
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nonascii [\200-\377]
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unicode \\[0-9a-f]{1,6}[ \n\r\t\f]?
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escape {unicode}|\\[ -~\200-\377]
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nmchar [-a-zA-Z0-9_]|{nonascii}|{escape}
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num [+-]?[0-9]+|[0-9]*\.[0-9]+
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string {string1}|{string2}
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string1 \"([\t !#$%&(-~]|\\{nl}|\'|{nonascii}|{escape})*\"
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string2 \'([\t !#$%&(-~]|\\{nl}|\"|{nonascii}|{escape})*\'
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nl \n|\r\n|\r|\f
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w [ \t\r\n\f]*
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%%
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{ident} { return IDENT; }
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@{ident} { return ATKEYWORD; }
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{string} { return STRING; }
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#{name} { return HASH; }
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{num} { return NUMBER; }
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{num}% { return PERCENTAGE; }
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{num}{ident} { return DIMENSION; }
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url\({w}{string}{w}\)|url\({w}([!#$%&*-~]|{nonascii}|{escape})*{w}\) {
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return URI; }
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U\+[0-9A-F?]{1,6}(-[0-9A-F]{1,6})? {
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return UNICODE_RANGE; }
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"<!--" /* ignore CDO */
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"-->" /* ignore CDC */
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; { return SEMI; }
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\{ { return LBRACE; }
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\} { return RBRACE; }
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\( { return LPAREN; }
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\) { return RPAREN; }
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\[ { return LBRAC; }
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\] { return RBRAC; }
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[ \t\r\n\f]+ /* ignore whitespace */
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\/\*[^*]*\*+([^/][^*]*\*+)*\/ /* ignore comments */
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{ident}\( { return FUNCTION; }
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= { return EQUALS; }
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~= { return INCLUDES; }
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"|=" { return DASHMATCH; }
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: { return COLON; }
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, { return COMMA; }
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"+" { return PLUS; }
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> { return GT; }
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"." { return DOT; }
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. { return DELIM; }
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%%
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