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added distinguish_tuple argument to Packer

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This will make precise python types serialization possible.
This commit is contained in:
faerot 2014-05-22 11:32:54 +03:00
parent 61bac2f586
commit 3b933f0966
2 changed files with 19 additions and 4 deletions
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11
msgpack/fallback.py
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@ -485,6 +485,10 @@ class Packer(object):
Convert unicode to bytes with this encoding. (default: 'utf-8')
:param str unicode_errors:
Error handler for encoding unicode. (default: 'strict')
:param bool distinguish_tuple:
If set to true, tuples will not be serialized as lists
and will be treated as unsupported type. This is useful when trying
to implement accurate serialization for python types.
:param bool use_single_float:
Use single precision float type for float. (default: False)
:param bool autoreset:
@ -495,7 +499,9 @@ class Packer(object):
It also enable str8 type for unicode.
"""
def __init__(self, default=None, encoding='utf-8', unicode_errors='strict',
use_single_float=False, autoreset=True, use_bin_type=False):
distinguish_tuple=False, use_single_float=False, autoreset=True,
use_bin_type=False):
self._distinguish_tuple = distinguish_tuple
self._use_float = use_single_float
self._autoreset = autoreset
self._use_bin_type = use_bin_type
@ -509,6 +515,7 @@ class Packer(object):
def _pack(self, obj, nest_limit=DEFAULT_RECURSE_LIMIT, isinstance=isinstance):
default_used = False
list_type = list if self._distinguish_tuple else (list, tuple)
while True:
if nest_limit < 0:
raise PackValueError("recursion limit exceeded")
@ -599,7 +606,7 @@ class Packer(object):
self._buffer.write(struct.pack("b", code))
self._buffer.write(data)
return
if isinstance(obj, (list, tuple)):
if isinstance(obj, list_type):
n = len(obj)
self._fb_pack_array_header(n)
for i in xrange(n):