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module Nokogiri
module CSS
# :nodoc: all
class Tokenizer
macro
nl (\n|\r\n|\r|\f)
w [\s]*
nonascii [^\0-\177]
num -?([0-9]+|[0-9]*\.[0-9]+)
unicode \\[0-9A-Fa-f]{1,6}(\r\n|[\s])?
escape ({unicode}|\\[^\n\r\f0-9A-Fa-f])
nmchar ([_A-Za-z0-9-]|{nonascii}|{escape})
nmstart ([_A-Za-z]|{nonascii}|{escape})
name {nmstart}{nmchar}*
ident -?{name}
charref {nmchar}+
string1 "([^\n\r\f"]|{nl}|{nonascii}|{escape})*(?<!\\)(?:\\{2})*"
string2 '([^\n\r\f']|{nl}|{nonascii}|{escape})*(?<!\\)(?:\\{2})*'
string ({string1}|{string2})
rule
# [:state] pattern [actions]
has\({w} { [:HAS, text] }
{ident}\({w} { [:FUNCTION, text] }
{ident} { [:IDENT, text] }
\#{charref} { [:HASH, text] }
{w}~={w} { [:INCLUDES, text] }
{w}\|={w} { [:DASHMATCH, text] }
{w}\^={w} { [:PREFIXMATCH, text] }
{w}\$={w} { [:SUFFIXMATCH, text] }
{w}\*={w} { [:SUBSTRINGMATCH, text] }
{w}!={w} { [:NOT_EQUAL, text] }
{w}={w} { [:EQUAL, text] }
{w}\) { [:RPAREN, text] }
\[{w} { [:LSQUARE, text] }
{w}\] { [:RSQUARE, text] }
{w}\+{w} { [:PLUS, text] }
{w}>{w} { [:GREATER, text] }
{w},{w} { [:COMMA, text] }
{w}~{w} { [:TILDE, text] }
\:not\({w} { [:NOT, text] }
{num} { [:NUMBER, text] }
{w}\/\/{w} { [:DOUBLESLASH, text] }
{w}\/{w} { [:SLASH, text] }
U\+[0-9a-f?]{1,6}(-[0-9a-f]{1,6})? {[:UNICODE_RANGE, text] }
[\s]+ { [:S, text] }
{string} { [:STRING, text] }
. { [text, text] }
end
end
end
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