module Nokogiri module CSS class Tokenizer # :nodoc:

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}
ident     [-@]?({nmstart})({nmchar})*
name      ({nmchar})+
string1   "([^\n\r\f"]|{nl}|{nonascii}|{escape})*"
string2   '([^\n\r\f']|{nl}|{nonascii}|{escape})*'
string    {string1}|{string2}

rule

# [:state] pattern [actions]

has\({w}         { [:HAS, text] }
{ident}\({w}     { [:FUNCTION, text] }
{ident}          { [:IDENT, text] }
\#{name}         { [:HASH, text] }
{w}~={w}         { [:INCLUDES, text] }
{w}\|={w}        { [:DASHMATCH, text] }
{w}\^={w}        { [:PREFIXMATCH, text] }
{w}\$={w}        { [:SUFFIXMATCH, text] }
{w}\*={w}        { [:SUBSTRINGMATCH, text] }
{w}!={w}         { [:NOT_EQUAL, text] }
{w}={w}          { [:EQUAL, text] }
{w}\)            { [: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