pip._vendor.msgpack.fallback Namespace Reference

Data Structures
class	Packer
class	StringIO
class	Unpacker

Functions
	dict_iteritems (d)
	_is_recursionerror (e)
	_check_type_strict (obj, t, type=type, tuple=tuple)
	_get_data_from_buffer (obj)
	unpackb (packed, **kwargs)
	_unpack_from (f, b, o=0)

Variables
int	PY2 = 2
tuple	int_types = (int, long)
	unicode = str
	xrange = range
	RecursionError = RuntimeError
bool	USING_STRINGBUILDER = True
	newlist_hint = lambda size: []
int	EX_SKIP = 0
int	EX_CONSTRUCT = 1
int	EX_READ_ARRAY_HEADER = 2
int	EX_READ_MAP_HEADER = 3
int	TYPE_IMMEDIATE = 0
int	TYPE_ARRAY = 1
int	TYPE_MAP = 2
int	TYPE_RAW = 3
int	TYPE_BIN = 4
int	TYPE_EXT = 5
int	DEFAULT_RECURSE_LIMIT = 511
	_unpack_from = struct.unpack_from
str	_NO_FORMAT_USED = ""
dict	_MSGPACK_HEADERS

Detailed Description

Fallback pure Python implementation of msgpack

Function Documentation

_check_type_strict()

_check_type_strict (   obj,   t,   type = type,   tuple = tuple  )

protected

Definition at line 96 of file fallback.py.

def _check_type_strict(obj, t, type=type, tuple=tuple):
    if type(t) is tuple:
        return type(obj) in t
    else:
        return type(obj) is t
 
 

_get_data_from_buffer()

_get_data_from_buffer (   obj )

protected

Definition at line 103 of file fallback.py.

def _get_data_from_buffer(obj):
    view = memoryview(obj)
    if view.itemsize != 1:
        raise ValueError("cannot unpack from multi-byte object")
    return view
 
 

References i.

Referenced by Unpacker.feed().

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_is_recursionerror()

_is_recursionerror (   e )

protected

Definition at line 27 of file fallback.py.

    def _is_recursionerror(e):
        return (
            len(e.args) == 1
            and isinstance(e.args[0], str)
            and e.args[0].startswith("maximum recursion depth exceeded")
        )
 

References i.

Referenced by pip._vendor.msgpack.fallback.unpackb().

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_unpack_from()

_unpack_from (   f,   b,   o = 0  )

protected

Explicit type cast for legacy struct.unpack_from

Definition at line 139 of file fallback.py.

    def _unpack_from(f, b, o=0):
        """Explicit type cast for legacy struct.unpack_from"""
        return struct.unpack_from(f, bytes(b), o)
 

References i.

dict_iteritems()

dict_iteritems

(

d

)

Definition at line 11 of file fallback.py.

    def dict_iteritems(d):
        return d.iteritems()
 

References i.

Referenced by Packer._pack().

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unpackb()

unpackb	(		packed,
		**	kwargs
	)

Unpack an object from `packed`.

Raises ``ExtraData`` when *packed* contains extra bytes.
Raises ``ValueError`` when *packed* is incomplete.
Raises ``FormatError`` when *packed* is not valid msgpack.
Raises ``StackError`` when *packed* contains too nested.
Other exceptions can be raised during unpacking.

See :class:`Unpacker` for options.

Definition at line 110 of file fallback.py.

def unpackb(packed, **kwargs):
    """
    Unpack an object from `packed`.
 
    Raises ``ExtraData`` when *packed* contains extra bytes.
    Raises ``ValueError`` when *packed* is incomplete.
    Raises ``FormatError`` when *packed* is not valid msgpack.
    Raises ``StackError`` when *packed* contains too nested.
    Other exceptions can be raised during unpacking.
 
    See :class:`Unpacker` for options.
    """
    unpacker = Unpacker(None, max_buffer_size=len(packed), **kwargs)
    unpacker.feed(packed)
    try:
        ret = unpacker._unpack()
    except OutOfData:
        raise ValueError("Unpack failed: incomplete input")
    except RecursionError as e:
        if _is_recursionerror(e):
            raise StackError
        raise
    if unpacker._got_extradata():
        raise ExtraData(ret, unpacker._get_extradata())
    return ret
 
 

References pip._vendor.msgpack.fallback._is_recursionerror(), and i.

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Variable Documentation

_MSGPACK_HEADERS

dict _MSGPACK_HEADERS

protected

Initial value:

=  {
    0xC4: (1, _NO_FORMAT_USED, TYPE_BIN),
    0xC5: (2, ">H", TYPE_BIN),
    0xC6: (4, ">I", TYPE_BIN),
    0xC7: (2, "Bb", TYPE_EXT),
    0xC8: (3, ">Hb", TYPE_EXT),
    0xC9: (5, ">Ib", TYPE_EXT),
    0xCA: (4, ">f"),
    0xCB: (8, ">d"),
    0xCC: (1, _NO_FORMAT_USED),
    0xCD: (2, ">H"),
    0xCE: (4, ">I"),
    0xCF: (8, ">Q"),
    0xD0: (1, "b"),
    0xD1: (2, ">h"),
    0xD2: (4, ">i"),
    0xD3: (8, ">q"),
    0xD4: (1, "b1s", TYPE_EXT),
    0xD5: (2, "b2s", TYPE_EXT),
    0xD6: (4, "b4s", TYPE_EXT),
    0xD7: (8, "b8s", TYPE_EXT),
    0xD8: (16, "b16s", TYPE_EXT),
    0xD9: (1, _NO_FORMAT_USED, TYPE_RAW),
    0xDA: (2, ">H", TYPE_RAW),
    0xDB: (4, ">I", TYPE_RAW),
    0xDC: (2, ">H", TYPE_ARRAY),
    0xDD: (4, ">I", TYPE_ARRAY),
    0xDE: (2, ">H", TYPE_MAP),
    0xDF: (4, ">I", TYPE_MAP),
}

Definition at line 147 of file fallback.py.

_NO_FORMAT_USED

str _NO_FORMAT_USED = ""

protected

Definition at line 146 of file fallback.py.

_unpack_from

_unpack_from = struct.unpack_from

protected

Definition at line 144 of file fallback.py.

Referenced by Unpacker._read_header().

DEFAULT_RECURSE_LIMIT

int DEFAULT_RECURSE_LIMIT = 511

Definition at line 93 of file fallback.py.

EX_CONSTRUCT

int EX_CONSTRUCT = 1

Definition at line 82 of file fallback.py.

EX_READ_ARRAY_HEADER

int EX_READ_ARRAY_HEADER = 2

Definition at line 83 of file fallback.py.

EX_READ_MAP_HEADER

int EX_READ_MAP_HEADER = 3

Definition at line 84 of file fallback.py.

EX_SKIP

int EX_SKIP = 0

Definition at line 81 of file fallback.py.

int_types

int_types = (int, long)

Definition at line 9 of file fallback.py.

newlist_hint

newlist_hint = lambda size: []

Definition at line 73 of file fallback.py.

PY2

int PY2 = 2

Definition at line 7 of file fallback.py.

RecursionError

RecursionError = RuntimeError

Definition at line 25 of file fallback.py.

TYPE_ARRAY

int TYPE_ARRAY = 1

Definition at line 87 of file fallback.py.

TYPE_BIN

int TYPE_BIN = 4

Definition at line 90 of file fallback.py.

TYPE_EXT

int TYPE_EXT = 5

Definition at line 91 of file fallback.py.

TYPE_IMMEDIATE

int TYPE_IMMEDIATE = 0

Definition at line 86 of file fallback.py.

TYPE_MAP

int TYPE_MAP = 2

Definition at line 88 of file fallback.py.

TYPE_RAW

int TYPE_RAW = 3

Definition at line 89 of file fallback.py.

unicode

unicode = str

Definition at line 16 of file fallback.py.

USING_STRINGBUILDER

USING_STRINGBUILDER = True

Definition at line 49 of file fallback.py.

xrange

xrange = range

Definition at line 17 of file fallback.py.

Referenced by Packer._pack(), and Unpacker._unpack().