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�
�t0^c@s�dZddlZddlZddlZddlmZmZyddlmZm	Z	Wn'e
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�defd��Y�ZdS(sJOSE interfaces.i����N(terrorstutil(tSequencetMappingtJSONDeSerializablecBskeZdZejd��Zd�Zejd��Z	e
d��Zd�Zd�Z
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d��ZRS(s�Interface for (de)serializable JSON objects.

    Please recall, that standard Python library implements
    :class:`json.JSONEncoder` and :class:`json.JSONDecoder` that perform
    translations based on respective :ref:`conversion tables
    <conversion-table>` that look pretty much like the one below (for
    complete tables see relevant Python documentation):

    .. _conversion-table:

    ======  ======
     JSON   Python
    ======  ======
    object  dict
    ...     ...
    ======  ======

    While the above **conversion table** is about translation of JSON
    documents to/from the basic Python types only,
    :class:`JSONDeSerializable` introduces the following two concepts:

      serialization
        Turning an arbitrary Python object into Python object that can
        be encoded into a JSON document. **Full serialization** produces
        a Python object composed of only basic types as required by the
        :ref:`conversion table <conversion-table>`. **Partial
        serialization** (accomplished by :meth:`to_partial_json`)
        produces a Python object that might also be built from other
        :class:`JSONDeSerializable` objects.

      deserialization
        Turning a decoded Python object (necessarily one of the basic
        types as required by the :ref:`conversion table
        <conversion-table>`) into an arbitrary Python object.

    Serialization produces **serialized object** ("partially serialized
    object" or "fully serialized object" for partial and full
    serialization respectively) and deserialization produces
    **deserialized object**, both usually denoted in the source code as
    ``jobj``.

    Wording in the official Python documentation might be confusing
    after reading the above, but in the light of those definitions, one
    can view :meth:`json.JSONDecoder.decode` as decoder and
    deserializer of basic types, :meth:`json.JSONEncoder.default` as
    serializer of basic types, :meth:`json.JSONEncoder.encode`  as
    serializer and encoder of basic types.

    One could extend :mod:`json` to support arbitrary object
    (de)serialization either by:

      - overriding :meth:`json.JSONDecoder.decode` and
        :meth:`json.JSONEncoder.default` in subclasses

      - or passing ``object_hook`` argument (or ``object_hook_pairs``)
        to :func:`json.load`/:func:`json.loads` or ``default`` argument
        for :func:`json.dump`/:func:`json.dumps`.

    Interestingly, ``default`` is required to perform only partial
    serialization, as :func:`json.dumps` applies ``default``
    recursively. This is the idea behind making :meth:`to_partial_json`
    produce only partial serialization, while providing custom
    :meth:`json_dumps` that dumps with ``default`` set to
    :meth:`json_dump_default`.

    To make further documentation a bit more concrete, please, consider
    the following imaginatory implementation example::

      class Foo(JSONDeSerializable):
          def to_partial_json(self):
              return 'foo'

          @classmethod
          def from_json(cls, jobj):
              return Foo()

      class Bar(JSONDeSerializable):
          def to_partial_json(self):
              return [Foo(), Foo()]

          @classmethod
          def from_json(cls, jobj):
              return Bar()

    cCs
t��dS(s�Partially serialize.

        Following the example, **partial serialization** means the following::

          assert isinstance(Bar().to_partial_json()[0], Foo)
          assert isinstance(Bar().to_partial_json()[1], Foo)

          # in particular...
          assert Bar().to_partial_json() != ['foo', 'foo']

        :raises josepy.errors.SerializationError:
            in case of any serialization error.
        :returns: Partially serializable object.

        N(tNotImplementedError(tself((s5/usr/lib/python2.7/site-packages/josepy/interfaces.pytto_partial_jsonkscs�fd���|�S(sDFully serialize.

        Again, following the example from before, **full serialization**
        means the following::

          assert Bar().to_json() == ['foo', 'foo']

        :raises josepy.errors.SerializationError:
            in case of any serialization error.
        :returns: Fully serialized object.

        cs�t|t�r�|j��St|tj�r5|St|t�rag|D]}�|�^qKSt|t�r�t�fd�|D��St|t�r�t	�fd�tj
|�D��S|SdS(Nc3s|]}�|�VqdS(N((t.0tsubobj(t
_serialize(s5/usr/lib/python2.7/site-packages/josepy/interfaces.pys	<genexpr>�sc3s-|]#\}}�|��|�fVqdS(N((Rtkeytvalue(R
(s5/usr/lib/python2.7/site-packages/josepy/interfaces.pys	<genexpr>�s(t
isinstanceRRtsixtstring_typestlistRttupleRtdictt	iteritems(tobjR	(R
(s5/usr/lib/python2.7/site-packages/josepy/interfaces.pyR
�s((R((R
s5/usr/lib/python2.7/site-packages/josepy/interfaces.pytto_json~s
cCs|�S(s�Deserialize a decoded JSON document.

        :param jobj: Python object, composed of only other basic data
            types, as decoded from JSON document. Not necessarily
            :class:`dict` (as decoded from "JSON object" document).

        :raises josepy.errors.DeserializationError:
            if decoding was unsuccessful, e.g. in case of unparseable
            X509 certificate, or wrong padding in JOSE base64 encoded
            string, etc.

        ((tclstjobj((s5/usr/lib/python2.7/site-packages/josepy/interfaces.pyt	from_json�scCsEytj|�}Wn"tk
r7}tj|��nX|j|�S(s&Deserialize from JSON document string.(tjsontloadst
ValueErrorRtDeserializationErrorR(Rtjson_stringRterror((s5/usr/lib/python2.7/site-packages/josepy/interfaces.pyt
json_loads�s
cKstj|d|j|�S(ssDump to JSON string using proper serializer.

        :returns: JSON document string.
        :rtype: str

        tdefault(Rtdumpstjson_dump_default(Rtkwargs((s5/usr/lib/python2.7/site-packages/josepy/interfaces.pyt
json_dumps�scCs|jdtdddd�S(sNDump the object to pretty JSON document string.

        :rtype: str

        t	sort_keystindentit
separatorst,s: (R(s: (R$tTrue(R((s5/usr/lib/python2.7/site-packages/josepy/interfaces.pytjson_dumps_pretty�scCs3t|t�r|j�Stt|�d��dS(s�Serialize Python object.

        This function is meant to be passed as ``default`` to
        :func:`json.dump` or :func:`json.dumps`. They call
        ``default(python_object)`` only for non-basic Python types, so
        this function necessarily raises :class:`TypeError` if
        ``python_object`` is not an instance of
        :class:`IJSONSerializable`.

        Please read the class docstring for more information.

        s is not JSON serializableN(R
RRt	TypeErrortrepr(Rt
python_object((s5/usr/lib/python2.7/site-packages/josepy/interfaces.pyR"�s
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__module__t__doc__tabctabstractmethodRRRtabstractclassmethodRtclassmethodRR$R*R"(((s5/usr/lib/python2.7/site-packages/josepy/interfaces.pyRsW	 				(R0R1RRtjosepyRRtcollections.abcRRtImportErrortcollectionst
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