File: //lib/python2.7/site-packages/cssselect/parser.pyo
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cssselect.parser
================
Tokenizer, parser and parsed objects for CSS selectors.
:copyright: (c) 2007-2012 Ian Bicking and contributors.
See AUTHORS for more details.
:license: BSD, see LICENSE for more details.
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SelectorErrorc B s e Z d Z RS( s� Common parent for :class:`SelectorSyntaxError` and
:class:`ExpressionError`.
You can just use ``except SelectorError:`` when calling
:meth:`~GenericTranslator.css_to_xpath` and handle both exceptions types.
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__module__t __doc__( ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR ! s t SelectorSyntaxErrorc B s e Z d Z RS( s3 Parsing a selector that does not match the grammar.( R R R ( ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR
* s t Selectorc B s, e Z d Z d d � Z d � Z d � Z RS( s"
Represents a parsed selector.
:meth:`~GenericTranslator.selector_to_xpath` accepts this object,
but ignores :attr:`pseudo_element`. It is the user’s responsibility
to account for pseudo-elements and reject selectors with unknown
or unsupported pseudo-elements.
c C sA | | _ | d k r4 t | t � r4 t | � } n | | _ d S( N( t parsed_treet Nonet
isinstancet FunctionalPseudoElementR t pseudo_element( t selft treeR ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyt __init__: s
c C s] t | j t � r$ t | j � } n | j r= d | j } n d } d | j j | j | f S( Ns ::%st s %s[%r%s]( R R R t reprt __class__R R ( R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyt __repr__U s c C s; | j j � \ } } } | j r. | d 7} n | | | f S( s� Return the specificity_ of this selector as a tuple of 3 integers.
.. _specificity: http://www.w3.org/TR/selectors/#specificity
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t Classc B s) e Z d Z d � Z d � Z d � Z RS( s(
Represents selector.class_name
c C s | | _ | | _ d S( N( t selectort
class_name( R R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR o s c C s d | j j | j | j f S( Ns %s[%r.%s]( R R R R ( R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR s s c C s/ | j j � \ } } } | d 7} | | | f S( Ni ( R R ( R R R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR w s
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Represents selector::name(arguments)
.. attribute:: name
The name (identifier) of the pseudo-element, as a string.
.. attribute:: arguments
The arguments of the pseudo-element, as a list of tokens.
**Note:** tokens are not part of the public API,
and may change between cssselect versions.
Use at your own risks.
c C s t | � | _ | | _ d S( N( R t namet arguments( R R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C s3 d | j j | j g | j D] } | j ^ q f S( Ns %s[::%s(%r)]( R R R R t value( R t token( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C s g | j D] } | j ^ q
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t Functionc B s2 e Z d Z d � Z d � Z d � Z d � Z RS( s(
Represents selector:name(expr)
c C s% | | _ t | � | _ | | _ d S( N( R R R R ( R R R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C s9 d | j j | j | j g | j D] } | j ^ q" f S( Ns
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( R R R R R R$ R ( ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR% � s
t Pseudoc B s) e Z d Z d � Z d � Z d � Z RS( s#
Represents selector:ident
c C s | | _ t | � | _ d S( N( R R t ident( R R R' ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C s d | j j | j | j f S( Ns %s[%r:%s]( R R R R' ( R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C s/ | j j � \ } } } | d 7} | | | f S( Ni ( R R ( R R R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s
( R R R R R R ( ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR& � s t Negationc B s) e Z d Z d � Z d � Z d � Z RS( s.
Represents selector:not(subselector)
c C s | | _ | | _ d S( N( R t subselector( R R R) ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C s d | j j | j | j f S( Ns %s[%r:not(%r)]( R R R R) ( R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C sI | j j � \ } } } | j j � \ } } } | | | | | | f S( N( R R R) ( R t a1t b1t c1t a2t b2t c2( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s ( R R R R R R ( ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR( � s t Attribc B s) e Z d Z d � Z d � Z d � Z RS( s>
Represents selector[namespace|attrib operator value]
c C s1 | | _ | | _ | | _ | | _ | | _ d S( N( R t namespacet attribt operatorR! ( R R R1 R2 R3 R! ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s
c C s~ | j r" d | j | j f } n | j } | j d k rT d | j j | j | f Sd | j j | j | | j | j f Sd S( Ns %s|%st existss
%s[%r[%s]]s %s[%r[%s %s %r]]( R1 R2 R3 R R R R! ( R R2 ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s c C s/ | j j � \ } } } | d 7} | | | f S( Ni ( R R ( R R R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s
( R R R R R R ( ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR0 � s
t Elementc B s/ e Z d Z d d d � Z d � Z d � Z RS( sU
Represents namespace|element
`None` is for the universal selector '*'
c C s | | _ | | _ d S( N( R1 t element( R R1 R6 ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR s c C sB | j p d } | j r. d | j | f } n d | j j | f S( Nt *s %s|%ss %s[%s]( R6 R1 R R ( R R6 ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR s c C s | j r
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Represents selector#id
c C s | | _ | | _ d S( N( R t id( R R R9 ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR s c C s d | j j | j | j f S( Ns %s[%r#%s]( R R R R9 ( R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR s c C s/ | j j � \ } } } | d 7} | | | f S( Ni ( R R ( R R R R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR s
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<followed>s %s[%r %s %r]( R; R R R R) ( R t comb( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR * s
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t | � � } | | _ t
t | � � S( s� Parse a CSS *group of selectors*.
If you don't care about pseudo-elements or selector specificity,
you can skip this and use :meth:`~GenericTranslator.css_to_xpath`.
:param css:
A *group of selectors* as an Unicode string.
:raises:
:class:`SelectorSyntaxError` on invalid selectors.
:returns:
A list of parsed :class:`Selector` objects, one for each
selector in the comma-separated group.
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c C s� t | � \ } } x� | j � | j � } | d d
f k rA Pn | rZ t d | � � n | j d d d � r� | j � j } | j � n d } t | � \ } } t | | | � } q W| | f S( Nt EOFRK RL s4 Got pseudo-element ::%s not at the end of a selectort +t >t ~R< ( RQ N( RK RL ( t parse_simple_selectorRM RO R
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| j f � � n | d' k r!t d | f � � n t | | � } qat | | t | � � } q� t d | f � � q� Wt | j � | k r�t d | j � f � � n | | f S(( Nt IDENTRK R7 t |t SRQ RL RR RS RT t )s4 Got pseudo-element ::%s not at the end of a selectort HASHt .t [t :t (s
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d } } | d k ru| j � | j � } | d k r t | | | d d � S| d k rd } qu| j d d d
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d k r�t d | f � � n | j � | j � } | d k r�t d | f � � n t | | | | | j � S( NRK RZ s Expected '|', got %st =s |=t ]R4 t ^t $R7 RT t !s Operator expected, got %sRY Rr s Expected string or ident, got %ss Expected ']', got %s( RK RZ ( RK RZ ( RK Rv ( RK Rw ( RK Rv ( RK Rv ( RY Rr ( RK Rw ( RM Rh R
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Parses the arguments for :nth-child() and friends.
:raises: A list of tokens
:returns: :``(a, b)``
Rr s$ String tokens not allowed in series.R c s s | ] } | j Vq d S( N( R! ( t .0R" ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pys <genexpr>+ s t oddi i t eveni t nRt RR t 1( i i ( i i ( i i ( R# t
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t Tokenc B sM e Z d � Z d � Z d � Z e e j d � � Z e e j d � � Z RS( c C s% t j | | | f � } | | _ | S( N( t tuplet __new__Rn ( t clst type_R! Rn t obj( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR� F s c C s d | j | j | j f S( Ns <%s '%s' at %i>( R# R! Rn ( R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR K s c G s | j d k o | j | k S( NRK ( R# R! ( R t values( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyRV N s i i (
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[^\0-\177]s [_a-z0-9-]|%s|%ss [_a-z]|%s|%s( R R t unicode_escapet escapet
string_escapet nonasciit nmchart nmstart( ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR� ` s
c C s t j | t t � t j � j S( N( t ret compilet varsR� t
IGNORECASER? ( t pattern( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyt _compileh s s [ \t\r\n\f]+s [+-]?(?:[0-9]*\.[0-9]+|[0-9]+)s #(?:%(nmchar)s)+s -?(?:%(nmstart)s)(?:%(nmchar)s)*s! ([^\n\r\f\\']|%(string_escape)s)*t 's! ([^\n\r\f\\"]|%(string_escape)s)*t "s \\(.)s \\(?:\n|\r\n|\r|\f)t methodcallerR@ i c C s
| j d � S( Ni ( R@ ( R? ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyt _replace_simple} s c C s: t | j d � d � } | t j k r0 d } n t | � S( Ni i i�� ( R� R@ t syst
maxunicodet _unichr( R? t codepoint( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyt _replace_unicode� s c C s" t t | � } t t | � } | S( N( t _sub_unicode_escapeR� t _sub_simple_escapeR� ( R! ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyt unescape_ident� s c c s� d } t | � } x�| | k r�t | d | �} | r\ t d d | � V| j � } q n t | d | �} | r� t t t t | j � � � } t d | | � V| j � } q n t
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7} q n t d | | | � V| d 7} q Wt | � Vd S( Ni Rn R[ R< RY i R] s Unclosed string at %ss Invalid string at %sR Rr Rs i s /*s */i����RK ( Rf t _match_whitespaceR� t endt _match_identR� R� R� R� R@ t _match_hasht _match_string_by_quoteR
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next_tokent AttributeErrort __next__( R R� RE ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyR � s
c C sP | j r, t | _ | j j | j � | j S| j � } | j j | � | Sd S( N( R� R� Rg Ru R� R� ( R RP ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyRP � s c C s+ | j s$ | j � | _ t | _ n | j S( N( R� R� R� Rm ( R ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyRO � s c C s8 | j � } | j d k r1 t d | f � � n | j S( NRY s Expected ident, got %s( RP R# R
R! ( R RP ( ( s4 /usr/lib/python2.7/site-packages/cssselect/parser.pyRi � s c C sI | j � } | j d k r" | j S| d k r2 d St d | f � � d S( NRY RK R7 s Expected ident or '*', got %s( RK R7 ( RP R# R! R
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