U
    ;»{j¢œ  ã                   @  s(  d Z ddlmZ ddlZddlZddlZddlmZmZm	Z	m
Z
mZ ddlmZ ddlmZ eeef Ze
ded	�Zeeegef Zd
ddœdd„ZG dd„ deƒZG dd„ dejd�ZG dd„ deƒZe d¡Zdddœdd„Zdddœdd„Zdddœd d!„Zddd"d#œd$d%„Z G d&d'„ d'eƒZ!dS )(z¢
.. testsetup::

    from pip._vendor.packaging.specifiers import Specifier, SpecifierSet, InvalidSpecifier
    from pip._vendor.packaging.version import Version
é    )ÚannotationsN)ÚCallableÚIterableÚIteratorÚTypeVarÚUnioné   )Úcanonicalize_version)ÚVersionÚUnparsedVersionVar)ZboundÚUnparsedVersionr
   )ÚversionÚreturnc                 C  s   t | tƒst| ƒ} | S ©N)Ú
isinstancer
   )r   © r   úA/tmp/pip-install-zsn1f9xv/pip/pip/_vendor/packaging/specifiers.pyÚ_coerce_version   s    
r   c                   @  s   e Zd ZdZdS )ÚInvalidSpecifiera  
    Raised when attempting to create a :class:`Specifier` with a specifier
    string that is invalid.

    >>> Specifier("lolwat")
    Traceback (most recent call last):
        ...
    packaging.specifiers.InvalidSpecifier: Invalid specifier: 'lolwat'
    N)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   r   r   r   r       s   r   c                   @  s¬   e Zd Zejddœdd„ƒZejddœdd„ƒZejdd	d
œdd„ƒZeejddœdd„ƒƒZ	e	j
d	ddœdd„ƒZ	ejdddd	dœdd„ƒZejdddddœdd„ƒZdS )ÚBaseSpecifierÚstr©r   c                 C  s   dS )zŽ
        Returns the str representation of this Specifier-like object. This
        should be representative of the Specifier itself.
        Nr   ©Úselfr   r   r   Ú__str__-   s    zBaseSpecifier.__str__Úintc                 C  s   dS )zF
        Returns a hash value for this Specifier-like object.
        Nr   r   r   r   r   Ú__hash__4   s    zBaseSpecifier.__hash__ÚobjectÚbool©Úotherr   c                 C  s   dS )z«
        Returns a boolean representing whether or not the two Specifier-like
        objects are equal.

        :param other: The other object to check against.
        Nr   ©r   r$   r   r   r   Ú__eq__:   s    zBaseSpecifier.__eq__úbool | Nonec                 C  s   dS )zîWhether or not pre-releases as a whole are allowed.

        This can be set to either ``True`` or ``False`` to explicitly enable or disable
        prereleases or it can be set to ``None`` (the default) to use default semantics.
        Nr   r   r   r   r   ÚprereleasesC   s    zBaseSpecifier.prereleasesÚNone©Úvaluer   c                 C  s   dS )zQSetter for :attr:`prereleases`.

        :param value: The value to set.
        Nr   ©r   r+   r   r   r   r(   L   s    N©Úitemr(   r   c                 C  s   dS )zR
        Determines if the given item is contained within this specifier.
        Nr   )r   r.   r(   r   r   r   ÚcontainsS   s    zBaseSpecifier.containsúIterable[UnparsedVersionVar]úIterator[UnparsedVersionVar]©Úiterabler(   r   c                 C  s   dS )z•
        Takes an iterable of items and filters them so that only items which
        are contained within this specifier are allowed in it.
        Nr   )r   r3   r(   r   r   r   ÚfilterY   s    zBaseSpecifier.filter)N)N)r   r   r   ÚabcÚabstractmethodr   r    r&   Úpropertyr(   Úsetterr/   r4   r   r   r   r   r   ,   s     ÿr   )Ú	metaclassc                	   @  sÒ  e Zd ZdZdZdZe de e d ejej	B ¡Z
dddd	d
ddddœZdSddddœdd„Zeddœdd„ƒZejdddœdd„ƒZeddœdd„ƒZeddœdd „ƒZddœd!d"„Zddœd#d$„Zed%dœd&d'„ƒZd(dœd)d*„Zd+dd,œd-d.„Zdd/d0œd1d2„Zd3ddd4œd5d6„Zd3ddd4œd7d8„Zd3ddd4œd9d:„Zd3ddd4œd;d<„Zd3ddd4œd=d>„Zd3ddd?œd@dA„Zd3ddd?œdBdC„Zd3ddd4œdDdE„ZdFddGœdHdI„Z dTdJdddKœdLdM„Z!dUdNddOdPœdQdR„Z"dS )VÚ	Specifiera?  This class abstracts handling of version specifiers.

    .. tip::

        It is generally not required to instantiate this manually. You should instead
        prefer to work with :class:`SpecifierSet` instead, which can parse
        comma-separated version specifiers (which is what package metadata contains).
    z8
        (?P<operator>(~=|==|!=|<=|>=|<|>|===))
        aÈ  
        (?P<version>
            (?:
                # The identity operators allow for an escape hatch that will
                # do an exact string match of the version you wish to install.
                # This will not be parsed by PEP 440 and we cannot determine
                # any semantic meaning from it. This operator is discouraged
                # but included entirely as an escape hatch.
                (?<====)  # Only match for the identity operator
                \s*
                [^\s;)]*  # The arbitrary version can be just about anything,
                          # we match everything except for whitespace, a
                          # semi-colon for marker support, and a closing paren
                          # since versions can be enclosed in them.
            )
            |
            (?:
                # The (non)equality operators allow for wild card and local
                # versions to be specified so we have to define these two
                # operators separately to enable that.
                (?<===|!=)            # Only match for equals and not equals

                \s*
                v?
                (?:[0-9]+!)?          # epoch
                [0-9]+(?:\.[0-9]+)*   # release

                # You cannot use a wild card and a pre-release, post-release, a dev or
                # local version together so group them with a | and make them optional.
                (?:
                    \.\*  # Wild card syntax of .*
                    |
                    (?:                                  # pre release
                        [-_\.]?
                        (alpha|beta|preview|pre|a|b|c|rc)
                        [-_\.]?
                        [0-9]*
                    )?
                    (?:                                  # post release
                        (?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
                    )?
                    (?:[-_\.]?dev[-_\.]?[0-9]*)?         # dev release
                    (?:\+[a-z0-9]+(?:[-_\.][a-z0-9]+)*)? # local
                )?
            )
            |
            (?:
                # The compatible operator requires at least two digits in the
                # release segment.
                (?<=~=)               # Only match for the compatible operator

                \s*
                v?
                (?:[0-9]+!)?          # epoch
                [0-9]+(?:\.[0-9]+)+   # release  (We have a + instead of a *)
                (?:                   # pre release
                    [-_\.]?
                    (alpha|beta|preview|pre|a|b|c|rc)
                    [-_\.]?
                    [0-9]*
                )?
                (?:                                   # post release
                    (?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
                )?
                (?:[-_\.]?dev[-_\.]?[0-9]*)?          # dev release
            )
            |
            (?:
                # All other operators only allow a sub set of what the
                # (non)equality operators do. Specifically they do not allow
                # local versions to be specified nor do they allow the prefix
                # matching wild cards.
                (?<!==|!=|~=)         # We have special cases for these
                                      # operators so we want to make sure they
                                      # don't match here.

                \s*
                v?
                (?:[0-9]+!)?          # epoch
                [0-9]+(?:\.[0-9]+)*   # release
                (?:                   # pre release
                    [-_\.]?
                    (alpha|beta|preview|pre|a|b|c|rc)
                    [-_\.]?
                    [0-9]*
                )?
                (?:                                   # post release
                    (?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
                )?
                (?:[-_\.]?dev[-_\.]?[0-9]*)?          # dev release
            )
        )
        z^\s*z\s*$Ú
compatibleÚequalÚ	not_equalÚless_than_equalÚgreater_than_equalÚ	less_thanÚgreater_thanÚ	arbitrary)ú~=ú==z!=ú<=ú>=ú<ú>ú===Ú Nr   r'   r)   )Úspecr(   r   c                 C  sF   | j  |¡}|std|›�ƒ‚| d¡ ¡ | d¡ ¡ f| _|| _dS )að  Initialize a Specifier instance.

        :param spec:
            The string representation of a specifier which will be parsed and
            normalized before use.
        :param prereleases:
            This tells the specifier if it should accept prerelease versions if
            applicable or not. The default of ``None`` will autodetect it from the
            given specifiers.
        :raises InvalidSpecifier:
            If the given specifier is invalid (i.e. bad syntax).
        zInvalid specifier: Úoperatorr   N)Ú_regexÚsearchr   ÚgroupÚstripÚ_specÚ_prereleases)r   rK   r(   Úmatchr   r   r   Ú__init__Þ   s    þzSpecifier.__init__r"   r   c                 C  sR   | j d k	r| j S | j\}}|dkrN|dkr@| d¡r@|d d… }t|ƒjrNdS dS )N)rD   rF   rE   rC   rI   rH   rG   rD   ú.*éþÿÿÿTF)rR   rQ   Úendswithr
   Úis_prerelease)r   rL   r   r   r   r   r(   ø   s    


zSpecifier.prereleasesr*   c                 C  s
   || _ d S r   ©rR   r,   r   r   r   r(     s    c                 C  s
   | j d S )z`The operator of this specifier.

        >>> Specifier("==1.2.3").operator
        '=='
        r   ©rQ   r   r   r   r   rL     s    zSpecifier.operatorc                 C  s
   | j d S )zaThe version of this specifier.

        >>> Specifier("==1.2.3").version
        '1.2.3'
        r   rZ   r   r   r   r   r     s    zSpecifier.versionc                 C  s8   | j dk	rd| j›�nd}d| jj› dt| ƒ›|› d�S )aT  A representation of the Specifier that shows all internal state.

        >>> Specifier('>=1.0.0')
        <Specifier('>=1.0.0')>
        >>> Specifier('>=1.0.0', prereleases=False)
        <Specifier('>=1.0.0', prereleases=False)>
        >>> Specifier('>=1.0.0', prereleases=True)
        <Specifier('>=1.0.0', prereleases=True)>
        Nú, prereleases=rJ   rG   ú(ú)>)rR   r(   Ú	__class__r   r   ©r   Úprer   r   r   Ú__repr__&  s
    ÿýzSpecifier.__repr__c                 C  s   dj | jŽ S )zÐA string representation of the Specifier that can be round-tripped.

        >>> str(Specifier('>=1.0.0'))
        '>=1.0.0'
        >>> str(Specifier('>=1.0.0', prereleases=False))
        '>=1.0.0'
        z{}{})ÚformatrQ   r   r   r   r   r   8  s    zSpecifier.__str__ztuple[str, str]c                 C  s*   t | jd | jd dkd�}| jd |fS )Nr   r   rC   ©Zstrip_trailing_zero)r	   rQ   )r   Zcanonical_versionr   r   r   Ú_canonical_specB  s
    þzSpecifier._canonical_specr   c                 C  s
   t | jƒS r   )Úhashrd   r   r   r   r   r    J  s    zSpecifier.__hash__r!   r#   c                 C  sT   t |tƒr8z|  t|ƒ¡}W qH tk
r4   t Y S X nt || jƒsHtS | j|jkS )a>  Whether or not the two Specifier-like objects are equal.

        :param other: The other object to check against.

        The value of :attr:`prereleases` is ignored.

        >>> Specifier("==1.2.3") == Specifier("== 1.2.3.0")
        True
        >>> (Specifier("==1.2.3", prereleases=False) ==
        ...  Specifier("==1.2.3", prereleases=True))
        True
        >>> Specifier("==1.2.3") == "==1.2.3"
        True
        >>> Specifier("==1.2.3") == Specifier("==1.2.4")
        False
        >>> Specifier("==1.2.3") == Specifier("~=1.2.3")
        False
        )r   r   r^   r   ÚNotImplementedrd   r%   r   r   r   r&   M  s    
zSpecifier.__eq__ÚCallableOperator)Úopr   c                 C  s   t | d| j| › �ƒ}|S )NZ	_compare_)ÚgetattrÚ
_operators)r   rh   Úoperator_callabler   r   r   Ú_get_operatorj  s
     ÿzSpecifier._get_operatorr
   )ÚprospectiverK   r   c                 C  sH   t tt tt|ƒ¡ƒd d… ƒ}|d7 }|  d¡||ƒoF|  d¡||ƒS )NéÿÿÿÿrU   rF   rD   )Ú_version_joinÚlistÚ	itertoolsÚ	takewhileÚ_is_not_suffixÚ_version_splitrl   )r   rm   rK   Úprefixr   r   r   Ú_compare_compatiblep  s    	ÿ ÿzSpecifier._compare_compatiblec                 C  s†   |  d¡rbt|jdd�}t|d d… dd�}t|ƒ}t|ƒ}t||ƒ\}}|d t|ƒ… }	|	|kS t|ƒ}
|
jszt|jƒ}||
kS d S )NrU   Frc   rV   )rW   r	   Úpublicrt   Ú_pad_versionÚlenr
   Úlocal)r   rm   rK   Znormalized_prospectiveZnormalized_specZ
split_specZsplit_prospectiveZpadded_prospectiveÚ_Zshortened_prospectiveZspec_versionr   r   r   Ú_compare_equal„  s    
 ÿ
zSpecifier._compare_equalc                 C  s   |   ||¡ S r   )r|   ©r   rm   rK   r   r   r   Ú_compare_not_equal¬  s    zSpecifier._compare_not_equalc                 C  s   t |jƒt |ƒkS r   ©r
   rw   r}   r   r   r   Ú_compare_less_than_equal¯  s    z"Specifier._compare_less_than_equalc                 C  s   t |jƒt |ƒkS r   r   r}   r   r   r   Ú_compare_greater_than_equalµ  s    z%Specifier._compare_greater_than_equal)rm   Úspec_strr   c                 C  s<   t |ƒ}||k sdS |js8|jr8t |jƒt |jƒkr8dS dS ©NFT)r
   rX   Úbase_version©r   rm   r‚   rK   r   r   r   Ú_compare_less_than»  s    zSpecifier._compare_less_thanc                 C  s^   t |ƒ}||ksdS |js8|jr8t |jƒt |jƒkr8dS |jd k	rZt |jƒt |jƒkrZdS dS rƒ   )r
   Úis_postreleaser„   rz   r…   r   r   r   Ú_compare_greater_thanÓ  s    
zSpecifier._compare_greater_thanc                 C  s   t |ƒ ¡ t |ƒ ¡ kS r   )r   Úlowerr}   r   r   r   Ú_compare_arbitraryñ  s    zSpecifier._compare_arbitraryzstr | Version©r.   r   c                 C  s
   |   |¡S )a;  Return whether or not the item is contained in this specifier.

        :param item: The item to check for.

        This is used for the ``in`` operator and behaves the same as
        :meth:`contains` with no ``prereleases`` argument passed.

        >>> "1.2.3" in Specifier(">=1.2.3")
        True
        >>> Version("1.2.3") in Specifier(">=1.2.3")
        True
        >>> "1.0.0" in Specifier(">=1.2.3")
        False
        >>> "1.3.0a1" in Specifier(">=1.2.3")
        False
        >>> "1.3.0a1" in Specifier(">=1.2.3", prereleases=True)
        True
        ©r/   ©r   r.   r   r   r   Ú__contains__ô  s    zSpecifier.__contains__r   r-   c                 C  s<   |dkr| j }t|ƒ}|jr$|s$dS |  | j¡}||| jƒS )al  Return whether or not the item is contained in this specifier.

        :param item:
            The item to check for, which can be a version string or a
            :class:`Version` instance.
        :param prereleases:
            Whether or not to match prereleases with this Specifier. If set to
            ``None`` (the default), it uses :attr:`prereleases` to determine
            whether or not prereleases are allowed.

        >>> Specifier(">=1.2.3").contains("1.2.3")
        True
        >>> Specifier(">=1.2.3").contains(Version("1.2.3"))
        True
        >>> Specifier(">=1.2.3").contains("1.0.0")
        False
        >>> Specifier(">=1.2.3").contains("1.3.0a1")
        False
        >>> Specifier(">=1.2.3", prereleases=True).contains("1.3.0a1")
        True
        >>> Specifier(">=1.2.3").contains("1.3.0a1", prereleases=True)
        True
        NF)r(   r   rX   rl   rL   r   )r   r.   r(   Znormalized_itemrk   r   r   r   r/   	  s    
zSpecifier.containsr0   r1   r2   c                 c  s~   d}g }d|dk	r|ndi}|D ]@}t |ƒ}| j|f|Žr |jrV|sV| jsV| |¡ q d}|V  q |sz|rz|D ]
}|V  qndS )aO  Filter items in the given iterable, that match the specifier.

        :param iterable:
            An iterable that can contain version strings and :class:`Version` instances.
            The items in the iterable will be filtered according to the specifier.
        :param prereleases:
            Whether or not to allow prereleases in the returned iterator. If set to
            ``None`` (the default), it will be intelligently decide whether to allow
            prereleases or not (based on the :attr:`prereleases` attribute, and
            whether the only versions matching are prereleases).

        This method is smarter than just ``filter(Specifier().contains, [...])``
        because it implements the rule from :pep:`440` that a prerelease item
        SHOULD be accepted if no other versions match the given specifier.

        >>> list(Specifier(">=1.2.3").filter(["1.2", "1.3", "1.5a1"]))
        ['1.3']
        >>> list(Specifier(">=1.2.3").filter(["1.2", "1.2.3", "1.3", Version("1.4")]))
        ['1.2.3', '1.3', <Version('1.4')>]
        >>> list(Specifier(">=1.2.3").filter(["1.2", "1.5a1"]))
        ['1.5a1']
        >>> list(Specifier(">=1.2.3").filter(["1.3", "1.5a1"], prereleases=True))
        ['1.3', '1.5a1']
        >>> list(Specifier(">=1.2.3", prereleases=True).filter(["1.3", "1.5a1"]))
        ['1.3', '1.5a1']
        Fr(   NT)r   r/   rX   r(   Úappend)r   r3   r(   ÚyieldedÚfound_prereleasesÚkwr   Úparsed_versionr   r   r   r4   5  s"    ÿÿzSpecifier.filter)rJ   N)N)N)#r   r   r   r   Z_operator_regex_strZ_version_regex_strÚreÚcompileÚVERBOSEÚ
IGNORECASErM   rj   rT   r7   r(   r8   rL   r   ra   r   rd   r    r&   rl   rv   r|   r~   r€   r�   r†   rˆ   rŠ   rŽ   r/   r4   r   r   r   r   r:   c   sX   	^
þø
(- ÿr:   z^([0-9]+)((?:a|b|c|rc)[0-9]+)$r   z	list[str]c                 C  s^   g }|   d¡\}}}| |pd¡ | d¡D ],}t |¡}|rN| | ¡ ¡ q,| |¡ q,|S )a  Split version into components.

    The split components are intended for version comparison. The logic does
    not attempt to retain the original version string, so joining the
    components back with :func:`_version_join` may not produce the original
    version string.
    ú!Ú0Ú.)Ú
rpartitionr�   ÚsplitÚ_prefix_regexrN   ÚextendÚgroups)r   ÚresultÚepochr{   Úrestr.   rS   r   r   r   rt   v  s    
rt   )Ú
componentsr   c                 C  s   | ^}}|› dd  |¡› �S )zñJoin split version components into a version string.

    This function assumes the input came from :func:`_version_split`, where the
    first component must be the epoch (either empty or numeric), and all other
    components numeric.
    r˜   rš   )Újoin)r£   r¡   r¢   r   r   r   ro   Œ  s    ro   r"   )Úsegmentr   c                   s   t ‡ fdd„dD ƒƒ S )Nc                 3  s   | ]}ˆ   |¡V  qd S r   )Ú
startswith)Ú.0ru   ©r¥   r   r   Ú	<genexpr>˜  s    z!_is_not_suffix.<locals>.<genexpr>)ÚdevÚaÚbÚrcÚpost)Úanyr¨   r   r¨   r   rs   —  s    ÿrs   ztuple[list[str], list[str]])ÚleftÚrightr   c              
   C  sê   g g  }}|  tt dd„ | ¡ƒ¡ |  tt dd„ |¡ƒ¡ |  | t|d ƒd … ¡ |  |t|d ƒd … ¡ | ddgtdt|d ƒt|d ƒ ƒ ¡ | ddgtdt|d ƒt|d ƒ ƒ ¡ ttj |¡ƒttj |¡ƒfS )Nc                 S  s   |   ¡ S r   ©Úisdigit©Úxr   r   r   Ú<lambda>¡  ó    z_pad_version.<locals>.<lambda>c                 S  s   |   ¡ S r   r²   r´   r   r   r   r¶   ¢  r·   r   r   r™   )	r�   rp   rq   rr   ry   ÚinsertÚmaxÚchainÚfrom_iterable)r°   r±   Ú
left_splitÚright_splitr   r   r   rx   �  s    
,,þrx   c                   @  sì   e Zd ZdZd0ddddœdd	„Zedd
œdd„ƒZejdddœdd„ƒZdd
œdd„Zdd
œdd„Z	dd
œdd„Z
dd dœdd„Zdddœdd„Zdd
œdd „Zd!d
œd"d#„Zd$dd%œd&d'„Zd1d$dddd(œd)d*„Zd2d+dd,d-œd.d/„ZdS )3ÚSpecifierSetzÌThis class abstracts handling of a set of version specifiers.

    It can be passed a single specifier (``>=3.0``), a comma-separated list of
    specifiers (``>=3.0,!=3.1``), or no specifier at all.
    rJ   Nzstr | Iterable[Specifier]r'   r)   )Ú
specifiersr(   r   c                 C  sD   t |tƒr0dd„ | d¡D ƒ}ttt|ƒƒ| _n
t|ƒ| _|| _dS )a´  Initialize a SpecifierSet instance.

        :param specifiers:
            The string representation of a specifier or a comma-separated list of
            specifiers which will be parsed and normalized before use.
            May also be an iterable of ``Specifier`` instances, which will be used
            as is.
        :param prereleases:
            This tells the SpecifierSet if it should accept prerelease versions if
            applicable or not. The default of ``None`` will autodetect it from the
            given specifiers.

        :raises InvalidSpecifier:
            If the given ``specifiers`` are not parseable than this exception will be
            raised.
        c                 S  s   g | ]}|  ¡ r|  ¡ ‘qS r   )rP   ©r§   Úsr   r   r   Ú
<listcomp>Ò  s      z)SpecifierSet.__init__.<locals>.<listcomp>ú,N)r   r   rœ   Ú	frozensetÚmapr:   Ú_specsrR   )r   r¿   r(   Zsplit_specifiersr   r   r   rT   ¹  s
    

zSpecifierSet.__init__r   c                 C  s.   | j d k	r| j S | jsd S tdd„ | jD ƒƒS )Nc                 s  s   | ]}|j V  qd S r   ©r(   rÀ   r   r   r   r©   î  s     z+SpecifierSet.prereleases.<locals>.<genexpr>)rR   rÆ   r¯   r   r   r   r   r(   ß  s
    
zSpecifierSet.prereleasesr"   r*   c                 C  s
   || _ d S r   rY   r,   r   r   r   r(   ð  s    r   c                 C  s.   | j dk	rd| j›�nd}dt| ƒ›|› d�S )a  A representation of the specifier set that shows all internal state.

        Note that the ordering of the individual specifiers within the set may not
        match the input string.

        >>> SpecifierSet('>=1.0.0,!=2.0.0')
        <SpecifierSet('!=2.0.0,>=1.0.0')>
        >>> SpecifierSet('>=1.0.0,!=2.0.0', prereleases=False)
        <SpecifierSet('!=2.0.0,>=1.0.0', prereleases=False)>
        >>> SpecifierSet('>=1.0.0,!=2.0.0', prereleases=True)
        <SpecifierSet('!=2.0.0,>=1.0.0', prereleases=True)>
        Nr[   rJ   z<SpecifierSet(r]   )rR   r(   r   r_   r   r   r   ra   ô  s
    ÿýzSpecifierSet.__repr__c                 C  s   d  tdd„ | jD ƒƒ¡S )an  A string representation of the specifier set that can be round-tripped.

        Note that the ordering of the individual specifiers within the set may not
        match the input string.

        >>> str(SpecifierSet(">=1.0.0,!=1.0.1"))
        '!=1.0.1,>=1.0.0'
        >>> str(SpecifierSet(">=1.0.0,!=1.0.1", prereleases=False))
        '!=1.0.1,>=1.0.0'
        rÃ   c                 s  s   | ]}t |ƒV  qd S r   )r   rÀ   r   r   r   r©     s     z'SpecifierSet.__str__.<locals>.<genexpr>)r¤   ÚsortedrÆ   r   r   r   r   r   	  s    zSpecifierSet.__str__r   c                 C  s
   t | jƒS r   )re   rÆ   r   r   r   r   r      s    zSpecifierSet.__hash__zSpecifierSet | strr#   c                 C  s˜   t |tƒrt|ƒ}nt |tƒs"tS tƒ }t| j|jB ƒ|_| jdkrX|jdk	rX|j|_n<| jdk	rv|jdkrv| j|_n| j|jkrŒ| j|_ntdƒ‚|S )a‚  Return a SpecifierSet which is a combination of the two sets.

        :param other: The other object to combine with.

        >>> SpecifierSet(">=1.0.0,!=1.0.1") & '<=2.0.0,!=2.0.1'
        <SpecifierSet('!=1.0.1,!=2.0.1,<=2.0.0,>=1.0.0')>
        >>> SpecifierSet(">=1.0.0,!=1.0.1") & SpecifierSet('<=2.0.0,!=2.0.1')
        <SpecifierSet('!=1.0.1,!=2.0.1,<=2.0.0,>=1.0.0')>
        NzFCannot combine SpecifierSets with True and False prerelease overrides.)r   r   r¾   rf   rÄ   rÆ   rR   Ú
ValueError)r   r$   Ú	specifierr   r   r   Ú__and__  s     






ÿzSpecifierSet.__and__r!   c                 C  s6   t |ttfƒrtt|ƒƒ}nt |tƒs*tS | j|jkS )a¡  Whether or not the two SpecifierSet-like objects are equal.

        :param other: The other object to check against.

        The value of :attr:`prereleases` is ignored.

        >>> SpecifierSet(">=1.0.0,!=1.0.1") == SpecifierSet(">=1.0.0,!=1.0.1")
        True
        >>> (SpecifierSet(">=1.0.0,!=1.0.1", prereleases=False) ==
        ...  SpecifierSet(">=1.0.0,!=1.0.1", prereleases=True))
        True
        >>> SpecifierSet(">=1.0.0,!=1.0.1") == ">=1.0.0,!=1.0.1"
        True
        >>> SpecifierSet(">=1.0.0,!=1.0.1") == SpecifierSet(">=1.0.0")
        False
        >>> SpecifierSet(">=1.0.0,!=1.0.1") == SpecifierSet(">=1.0.0,!=1.0.2")
        False
        )r   r   r:   r¾   rf   rÆ   r%   r   r   r   r&   9  s
    
zSpecifierSet.__eq__c                 C  s
   t | jƒS )z7Returns the number of specifiers in this specifier set.)ry   rÆ   r   r   r   r   Ú__len__S  s    zSpecifierSet.__len__zIterator[Specifier]c                 C  s
   t | jƒS )zð
        Returns an iterator over all the underlying :class:`Specifier` instances
        in this specifier set.

        >>> sorted(SpecifierSet(">=1.0.0,!=1.0.1"), key=str)
        [<Specifier('!=1.0.1')>, <Specifier('>=1.0.0')>]
        )ÚiterrÆ   r   r   r   r   Ú__iter__W  s    zSpecifierSet.__iter__r   r‹   c                 C  s
   |   |¡S )ar  Return whether or not the item is contained in this specifier.

        :param item: The item to check for.

        This is used for the ``in`` operator and behaves the same as
        :meth:`contains` with no ``prereleases`` argument passed.

        >>> "1.2.3" in SpecifierSet(">=1.0.0,!=1.0.1")
        True
        >>> Version("1.2.3") in SpecifierSet(">=1.0.0,!=1.0.1")
        True
        >>> "1.0.1" in SpecifierSet(">=1.0.0,!=1.0.1")
        False
        >>> "1.3.0a1" in SpecifierSet(">=1.0.0,!=1.0.1")
        False
        >>> "1.3.0a1" in SpecifierSet(">=1.0.0,!=1.0.1", prereleases=True)
        True
        rŒ   r�   r   r   r   rŽ   a  s    zSpecifierSet.__contains__)r.   r(   Ú	installedr   c                   s\   t ˆ tƒstˆ ƒ‰ ˆdkr | j‰ˆs.ˆ jr.dS |rBˆ jrBtˆ jƒ‰ t‡ ‡fdd„| jD ƒƒS )a´  Return whether or not the item is contained in this SpecifierSet.

        :param item:
            The item to check for, which can be a version string or a
            :class:`Version` instance.
        :param prereleases:
            Whether or not to match prereleases with this SpecifierSet. If set to
            ``None`` (the default), it uses :attr:`prereleases` to determine
            whether or not prereleases are allowed.

        >>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.2.3")
        True
        >>> SpecifierSet(">=1.0.0,!=1.0.1").contains(Version("1.2.3"))
        True
        >>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.0.1")
        False
        >>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.3.0a1")
        False
        >>> SpecifierSet(">=1.0.0,!=1.0.1", prereleases=True).contains("1.3.0a1")
        True
        >>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.3.0a1", prereleases=True)
        True
        NFc                 3  s   | ]}|j ˆ ˆd �V  qdS )rÇ   NrŒ   rÀ   ©r.   r(   r   r   r©   ­  s     z(SpecifierSet.contains.<locals>.<genexpr>)r   r
   r(   rX   r„   ÚallrÆ   )r   r.   r(   rÏ   r   rÐ   r   r/   v  s    



zSpecifierSet.containsr0   r1   r2   c                 C  sœ   |dkr| j }| jr:| jD ]}|j|t|ƒd�}qt|ƒS g }g }|D ]0}t|ƒ}|jrl|sl|sv| |¡ qF| |¡ qF|s�|r�|dkr�t|ƒS t|ƒS dS )a.  Filter items in the given iterable, that match the specifiers in this set.

        :param iterable:
            An iterable that can contain version strings and :class:`Version` instances.
            The items in the iterable will be filtered according to the specifier.
        :param prereleases:
            Whether or not to allow prereleases in the returned iterator. If set to
            ``None`` (the default), it will be intelligently decide whether to allow
            prereleases or not (based on the :attr:`prereleases` attribute, and
            whether the only versions matching are prereleases).

        This method is smarter than just ``filter(SpecifierSet(...).contains, [...])``
        because it implements the rule from :pep:`440` that a prerelease item
        SHOULD be accepted if no other versions match the given specifier.

        >>> list(SpecifierSet(">=1.2.3").filter(["1.2", "1.3", "1.5a1"]))
        ['1.3']
        >>> list(SpecifierSet(">=1.2.3").filter(["1.2", "1.3", Version("1.4")]))
        ['1.3', <Version('1.4')>]
        >>> list(SpecifierSet(">=1.2.3").filter(["1.2", "1.5a1"]))
        []
        >>> list(SpecifierSet(">=1.2.3").filter(["1.3", "1.5a1"], prereleases=True))
        ['1.3', '1.5a1']
        >>> list(SpecifierSet(">=1.2.3", prereleases=True).filter(["1.3", "1.5a1"]))
        ['1.3', '1.5a1']

        An "empty" SpecifierSet will filter items based on the presence of prerelease
        versions in the set.

        >>> list(SpecifierSet("").filter(["1.3", "1.5a1"]))
        ['1.3']
        >>> list(SpecifierSet("").filter(["1.5a1"]))
        ['1.5a1']
        >>> list(SpecifierSet("", prereleases=True).filter(["1.3", "1.5a1"]))
        ['1.3', '1.5a1']
        >>> list(SpecifierSet("").filter(["1.3", "1.5a1"], prereleases=True))
        ['1.3', '1.5a1']
        NrÇ   )r(   rÆ   r4   r"   rÍ   r   rX   r�   )r   r3   r(   rK   Úfilteredr‘   r.   r“   r   r   r   r4   ¯  s"    ,

zSpecifierSet.filter)rJ   N)NN)N)r   r   r   r   rT   r7   r(   r8   ra   r   r    rË   r&   rÌ   rÎ   rŽ   r/   r4   r   r   r   r   r¾   ²  s*     ý& 
  ü: ÿr¾   )"r   Ú
__future__r   r5   rq   r”   Útypingr   r   r   r   r   Úutilsr	   r   r
   r   r   r   r"   rg   r   rÉ   r   ÚABCMetar   r:   r•   r�   rt   ro   rs   rx   r¾   r   r   r   r   Ú<module>   s0   7    
