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�

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.. testsetup::

    from packaging.specifiers import Specifier, SpecifierSet, InvalidSpecifier
    from packaging.version import Version
�)�annotationsN)�Callable�Iterable�Iterator�TypeVar�Union�)�canonicalize_version)�Version�UnparsedVersionVar)�boundc�<�t|t�st|�}|S�N)�
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    Raised when attempting to create a :class:`Specifier` with a specifier
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        ...
    packaging.specifiers.InvalidSpecifier: Invalid specifier: 'lolwat'
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	���QU��4��CN��	%���rr)�	metaclassc	��eZdZdZdZdZejdezezdzejejz�Z
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d+d��Zd,d�Zd-d�Zd.d�Zd/d�Zd/d�Zd/d�Zd/d�Zd/d�Zd0d �Zd0d!�Zd/d"�Zd1d#�Z d2d3d$�Z!	d2					d4d%�Z"y)5�	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>(~=|==|!=|<=|>=|<|>|===))
        a�
        (?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*$�
compatible�equal�	not_equal�less_than_equal�greater_than_equal�	less_than�greater_than�	arbitrary)�~=�==z!=�<=�>=�<�>�===Nc���|jj|�}|std|����|jd�j	�|jd�j	�f|_||_y)a�Initialize a Specifier instance.

        :param spec:
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        :param prereleases:
            This tells the specifier if it should accept prerelease versions if
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        r�r]rs rrXzSpecifier.operator����z�z�!�}�rc� �|jdS)zaThe version of this specifier.

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        >>> Specifier('>=1.0.0')
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        >>> Specifier('>=1.0.0', prereleases=False)
        <Specifier('>=1.0.0', prereleases=False)>
        >>> Specifier('>=1.0.0', prereleases=True)
        <Specifier('>=1.0.0', prereleases=True)>
        �, prereleases=�rT�(�)>)r^r*�	__class__rr6�r �pres  r�__repr__zSpecifier.__repr__&sU��� � �,��T�-�-�0�1��	��4�>�>�*�*�+�1�S��Y�M�#��b�A�Arc�4�dj|j�S)z�A string representation of the Specifier that can be round-tripped.

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        '>=1.0.0'
        z{}{})�formatr]rs rr!zSpecifier.__str__8s���v�}�}�d�j�j�)�)rc�x�t|jd|jddk7��}|jd|fS)Nr	rrP��strip_trailing_zero)r
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        :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
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�T�!���"�"�{�'A�'A��{�/�/�0�G�D�<M�<M�4N�N�����(��{�/�/�0�G�D�<M�<M�4N�N��
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        :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
        �r0�r r/s  r�__contains__zSpecifier.__contains__����&�}�}�T�"�"rc��|�|j}t|�}|jr|sy|j|j�}|||j
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            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
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        :param iterable:
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        :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']
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            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
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�B�Bc��|j�|jS|jsytd�|jD��S)Nc3�4K�|]}|j���y�wr�r*�r�rs  rr�z+SpecifierSet.prereleases.<locals>.<genexpr>�s����6�Q�1�=�=�6�s�)r^r�r�rs rr*zSpecifierSet.prereleases�s?�����(��$�$�$�
�{�{���6�$�+�+�6�6�6rc��||_yrrhr,s  rr*zSpecifierSet.prereleases�rirc�^�|j�d|j��nd}dt|��|�d�S)aA representation of the specifier set that shows all internal state.

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        <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)>
        rorpz<SpecifierSet(rr)r^r*r6rts  rrvzSpecifierSet.__repr__�sD��� � �,��T�-�-�0�1��	� ��D�	�}�S�E��4�4rc�X�djtd�|jD���S)anA string representation of the specifier set that can be round-tripped.

        Note that the ordering of the individual specifiers within the set may not
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        >>> 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'
        r�c3�2K�|]}t|����y�wr)r6rs  rr�z'SpecifierSet.__str__.<locals>.<genexpr>s����;�!�s�1�v�;�s�)r��sortedr�rs rr!zSpecifierSet.__str__	s"���x�x��;�t�{�{�;�;�<�<rc�,�t|j�Sr)rr�rs rr$zSpecifierSet.__hash__s���D�K�K� � rc���t|t�rt|�}nt|t�stSt�}t	|j
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        >>> 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')>
        zFCannot combine SpecifierSets with True and False prerelease overrides.)rr6r�r�r�r�r^�
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        :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
        )rr6rGr�r�r�r&s  rr(zSpecifierSet.__eq__9sD��&�e�c�9�-�.� ��U��,�E��E�<�0�!�!��{�{�e�l�l�*�*rc�,�t|j�S)z7Returns the number of specifiers in this specifier set.)r�r�rs r�__len__zSpecifierSet.__len__Ss���4�;�;��rc�,�t|j�S)z�
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        [<Specifier('!=1.0.1')>, <Specifier('>=1.0.0')>]
        )�iterr�rs r�__iter__zSpecifierSet.__iter__Ws���D�K�K� � rc�$�|j|�S)arReturn 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
        r�r�s  rr�zSpecifierSet.__contains__ar�rc����t�t�st�����|j��s
�jry|r!�jrt�j��t��fd�|jD��S)a�Return whether or not the item is contained in this SpecifierSet.

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        :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
        Fc3�D�K�|]}|j�������y�w)rNr�)r�rr/r*s  ��rr�z(SpecifierSet.contains.<locals>.<genexpr>�s�����R��1�:�:�d��:�<�R�s� )rrr*rfr��allr�)r r/r*�	installeds `` rr0zSpecifierSet.containsvsm���<�$��(��4�=�D�
���*�*�K��t�1�1����+�+��4�,�,�-�D��R�d�k�k�R�R�Rrc�r�|�|j}|jr8|jD]}|j|t|���}� t	|�Sg}g}|D]A}t|�}|jr|s|r�|j|��1|j|��C|s|r
|�t	|�St	|�S)a.Filter items in the given iterable, that match the specifiers in this set.

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            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']
        r)r*r�r3r;rrrfr�)r r2r*r_�filteredr�r/r�s        rr3zSpecifierSet.filter�s���X���*�*�K�
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