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�

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.. testsetup::

    from packaging.specifiers import Specifier, SpecifierSet, InvalidSpecifier
    from packaging.version import Version
�N)�Callable�Iterable�Iterator�List�Optional�Tuple�TypeVar�Union�)�canonicalize_version)�Version�UnparsedVersionVar)�bound�version�returnc�<�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'
    N)�__name__�
__module__�__qualname__�__doc__�rrrrs��rrc	�x�eZdZejdefd��Zejdefd��Zejde	de
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        Nr�r#r.s  rr-zBaseSpecifier.prereleasesJr%r�itemr-c��y)zR
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	����F��t���������X�d�^�����������$����	����S��x��~������
	���TX�� �!3�4��CK�D�>��	�$�	%���rr )�	metaclassc	��eZdZdZdZdZejdezezdzejejz�Z
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ede.e-fd/�Z/y)2�	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!=�<=�>=�<�>�===N�specr-rc���|jj|�}|std|�d���|jd�j	�|jd�j	�f|_||_y)a�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).
        zInvalid specifier: '�'�operatorrN)�_regex�searchr�group�strip�_spec�_prereleases)r#rQr-�matchs    r�__init__zSpecifier.__init__�so�����"�"�4�(���"�%9�$��q�#A�B�B�
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�#�)�)�+��K�K�	�"�(�(�*�'
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�(��rc��|j�|jS|j\}}|dvr1|dk(r|jd�r|dd}t|�jryy)N)rKrMrLrJrPrK�.*���TF)rZrY�endswithr
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!�J�J���'��6�6��4��G�$4�$4�T�$:�!�#�2�,���w��-�-��rr.c��||_yr�rZr0s  rr-zSpecifier.prereleases�
��!��rc� �|jdS)z`The operator of this specifier.

        >>> Specifier("==1.2.3").operator
        '=='
        r�rYr"s rrTzSpecifier.operator����z�z�!�}�rc� �|jdS)zaThe version of this specifier.

        >>> Specifier("==1.2.3").version
        '1.2.3'
        rrfr"s rrzSpecifier.versionrgrc��|j�d|j��nd}d|jj�dt	|��|�d�S)aTA 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)>
        �, prereleases=�rN�(�)>)rZr-�	__class__rr9�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.

        >>> str(Specifier('>=1.0.0'))
        '>=1.0.0'
        >>> str(Specifier('>=1.0.0', prereleases=False))
        '>=1.0.0'
        z{}{})�formatrYr"s rr$zSpecifier.__str__6s���v�}�}�d�j�j�)�)rc�x�t|jd|jddk7��}|jd|fS)NrrrJ��strip_trailing_zero)rrY)r#�canonical_versions  r�_canonical_speczSpecifier._canonical_spec@s>��0��J�J�q�M�!%���A��$�!6�
���z�z�!�}�/�/�/rc�,�t|j�Sr)�hashrxr"s rr'zSpecifier.__hash__Hs���D�(�(�)�)rr(c���t|t�r	|jt|��}nt||j�stS|j
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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
        )rr9rnr�NotImplementedrxr*s  rr+zSpecifier.__eq__Ksi��&�e�S�!�
&����s�5�z�2���E�4�>�>�2�!�!��#�#�u�'<�'<�<�<��$�
&�%�%�
&�s�A"�"A4�3A4�opc�>�t|d|j|���}|S)N�	_compare_)�getattr�
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rc�D�|jd�r_t|jd��}t|ddd��}t|�}t|�}t	||�\}}|dt|�}	|	|k(St
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�{�)�)�*�g�d�m�;�;rc�D�t|j�t|�k\Srr�r�s   r�_compare_greater_than_equalz%Specifier._compare_greater_than_equal�r�r�spec_strc��t|�}||ksy|js8|jr,t|j�t|j�k(ryy�NFT)r
ra�base_version�r#r�r�rQs    r�_compare_less_thanzSpecifier._compare_less_than�sT���x� ��
�T�!���!�!�k�&?�&?��{�/�/�0�G�D�<M�<M�4N�N��
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�T�!���"�"�{�'A�'A��{�/�/�0�G�D�<M�<M�4N�N�����(��{�/�/�0�G�D�<M�<M�4N�N��
rc�h�t|�j�t|�j�k(Sr)r9�lowerr�s   r�_compare_arbitraryzSpecifier._compare_arbitrary�s&���;��%�%�'�3�t�9�?�?�+<�<�<rr1c�$�|j|�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
        �r3�r#r1s  r�__contains__zSpecifier.__contains__����&�}�}�T�"�"rc��|�|j}t|�}|jr|sy|j|j�}|||j
�S)alReturn whether or not the item is contained in this specifier.

        :param item:
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            :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
        F)r-rrar�rTr)r#r1r-�normalized_itemr�s     rr3zSpecifier.contains
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�(�(���/3�.@�.@����.O�� ��$�,�,�?�?rr4c#�K�d}g}d|�|ndi}|D]S}t|�}|j|fi|��s�"|jr |s|js|j	|��Nd}|���U|s|r|D]}|���yyy�w)aOFilter items in the given iterable, that match the specifier.

        :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']
        Fr-NT)rr3rar-�append)r#r4r-�yielded�found_prereleases�kwr�parsed_versions        rr6zSpecifier.filter;s�����<�����K�,C�[��
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            applicable or not. The default of ``None`` will autodetect it from the
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        Note that the ordering of the individual specifiers within the set may not
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        >>> 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)>
        rjrkz<SpecifierSet(rm)rZr-r9ros  rrqzSpecifierSet.__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.

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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)r9rs  rr�z'SpecifierSet.__str__.<locals>.<genexpr>s����;�!�s�1�v�;�s�)r��sortedr�r"s rr$zSpecifierSet.__str__s"���x�x��;�t�{�{�;�;�<�<rc�,�t|j�Sr)rzr�r"s rr'zSpecifierSet.__hash__s���D�K�K� � rr(c���t|t�rt|�}nt|t�stSt�}t	|j
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z�|_|j�|j�|j|_|S|j�|j�|j|_|S|j|jk(r|j|_|Std��)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')>
        zFCannot combine SpecifierSets with True and False prerelease overrides.)rr9r�r|r�r�rZ�
ValueError)r#r(�	specifiers   r�__and__zSpecifierSet.__and__s����e�S�!� ��'�E��E�<�0�!�!� �N�	�$�T�[�[�5�<�<�%?�@�	�����$��);�);�)G�%*�%7�%7�I�"����
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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
        )rr9rAr�r|r�r*s  rr+zSpecifierSet.__eq__6sD��&�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�r"s r�__len__zSpecifierSet.__len__Ps���4�;�;��rc�,�t|j�S)z�
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        [<Specifier('!=1.0.1')>, <Specifier('>=1.0.0')>]
        )�iterr�r"s r�__iter__zSpecifierSet.__iter__Ts���D�K�K� � rr1c�$�|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__^r�r�	installedc����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.

        :param item:
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            :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
        Fc3�D�K�|]}|j�������y�w)r�Nr�)r�r�r1r-s  ��rr�z(SpecifierSet.contains.<locals>.<genexpr>�s�����R��1�:�:�d��:�<�R�s� )rr
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���*�*�K��t�1�1����+�+��4�,�,�-�D��R�d�k�k�R�R�Rrr4c�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.

        :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']
        r�)r-r�r6r<rrrar�)r#r4r-rQ�filteredr�r1r�s        rr6zSpecifierSet.filter�s���X���*�*�K�
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