Moved binary into a submodule

[sandbox] / serial / binary.py

diff --git a/serial/binary.py b/serial/binary.py
deleted file mode 100644 (file)
index fabcd47..0000000
--- a/serial/binary.py
+++ /dev/null
@@ -1,182 +0,0 @@
-import collections
-import functools
-import io
-import struct
-
-TAG_NULL = 0x00
-TAG_TRUE = 0x01
-TAG_FALSE = 0x02
-TAG_UINT8 = 0x03
-TAG_UINT16 = 0x04
-TAG_UINT32 = 0x05
-TAG_UINT64 = 0x06
-TAG_INT8 = 0x10
-TAG_INT16 = 0x11
-TAG_INT32 = 0x12
-TAG_INT64 = 0x13
-TAG_BINARY = 0x20
-TAG_UTF8 = 0x21
-TAG_UTF16 = 0x22
-TAG_UTF32 = 0x23
-TAG_TUPLE = 0x30
-
-TaggedObject = collections.namedtuple(
-    'TaggedObject',
-    [
-        'tag',
-        'instance',
-    ],
-)
-
-def _make_tag_only_serializer(tag, expected_value):
-    tag = bytes([tag])
-
-    def serializer(to):
-        assert to.instance == expected_value
-        return tag
-
-    return serializer
-
-def _make_struct_serializer(fmt):
-    fmt = '!B' + fmt
-    packer = functools.partial(struct.pack, fmt)
-
-    def serializer(to):
-        return packer(to.tag, to.instance)
-
-    return serializer
-
-def _make_string_serializer(encoder):
-    packer = functools.partial(struct.pack, '!BI')
-
-    def serializer(to):
-        encoded = encoder(to.instance)
-        return packer(to.tag, len(encoded)) + encoded
-
-    return serializer
-
-def _serialize_tuple(to):
-    assert isinstance(to.instance, tuple)
-
-    payload = b''.join(serialize(item) for item in to.instance)
-
-    fmt = '!BI'
-
-    return struct.pack('!BI', TAG_TUPLE, len(payload)) + payload
-
-
-_TAGS_TO_SERIALIZERS = {
-    TAG_NULL: _make_tag_only_serializer(TAG_NULL, None),
-    TAG_TRUE: _make_tag_only_serializer(TAG_TRUE, True),
-    TAG_FALSE: _make_tag_only_serializer(TAG_FALSE, False),
-    TAG_UINT8: _make_struct_serializer('B'),
-    TAG_UINT16: _make_struct_serializer('H'),
-    TAG_UINT32: _make_struct_serializer('I'),
-    TAG_UINT64: _make_struct_serializer('Q'),
-    TAG_INT8: _make_struct_serializer('b'),
-    TAG_INT16: _make_struct_serializer('h'),
-    TAG_INT32: _make_struct_serializer('i'),
-    TAG_INT64: _make_struct_serializer('q'),
-    TAG_BINARY: _make_string_serializer(lambda s: s),
-    TAG_UTF8: _make_string_serializer(lambda s: s.encode('utf-8')),
-    TAG_UTF16: _make_string_serializer(lambda s: s.encode('utf-16')),
-    TAG_UTF32: _make_string_serializer(lambda s: s.encode('utf-32')),
-    TAG_TUPLE: _serialize_tuple,
-}
-
-def serialize(to):
-    return _TAGS_TO_SERIALIZERS[to.tag](to)
-
-def _make_tag_only_parser(tag, value):
-    def parser(b):
-        return 0, TaggedObject(tag = tag, instance = value)
-
-    return parser
-
-def _make_struct_deserializer(tag, fmt):
-    fmt = '!' + fmt
-    size = struct.calcsize(fmt)
-    unpacker = functools.partial(struct.unpack, fmt)
-
-    def parser(b):
-        b = b.read(size)
-        assert len(b) == size
-        return size, TaggedObject(tag = tag, instance = unpacker(b)[0])
-
-    return parser
-
-_LENGTH_FMT = '!I'
-_LENGTH_FMT_SIZE = struct.calcsize(_LENGTH_FMT)
-
-def _read_length_then_payload(b):
-    length_b = b.read(_LENGTH_FMT_SIZE)
-    assert len(length_b) == _LENGTH_FMT_SIZE
-    length = struct.unpack(_LENGTH_FMT, length_b)[0]
-
-    payload = b.read(length)
-    assert len(payload) == length
-    return _LENGTH_FMT_SIZE + length, payload
-
-def _make_string_deserializer(tag, decoder):
-    fmt = '!I'
-    size = struct.calcsize(fmt)
-    unpacker = functools.partial(struct.unpack, fmt)
-
-    def parser(b):
-        bytes_read, payload = _read_length_then_payload(b)
-        return bytes_read, TaggedObject(tag = tag, instance = decoder(payload))
-
-    return parser
-
-def _deserialize_tuple(b):
-    bytes_read, payload = _read_length_then_payload(b)
-
-    payload_stream = io.BytesIO(payload)
-
-    total_bytes_read = 0
-    instance = []
-
-    while total_bytes_read < len(payload):
-        partial_bytes_read, item = _deserialize_partial(payload_stream)
-        total_bytes_read += partial_bytes_read
-        instance.append(item)
-
-    return bytes_read, TaggedObject(tag = TAG_TUPLE, instance = tuple(instance))
-
-_TAGS_TO_PARSERS = {
-    TAG_NULL: _make_tag_only_parser(TAG_NULL, None),
-    TAG_TRUE: _make_tag_only_parser(TAG_TRUE, True),
-    TAG_FALSE: _make_tag_only_parser(TAG_FALSE, False),
-    TAG_UINT8: _make_struct_deserializer(TAG_UINT8, 'B'),
-    TAG_UINT16: _make_struct_deserializer(TAG_UINT16, 'H'),
-    TAG_UINT32: _make_struct_deserializer(TAG_UINT32, 'I'),
-    TAG_UINT64: _make_struct_deserializer(TAG_UINT64, 'Q'),
-    TAG_INT8: _make_struct_deserializer(TAG_INT8, 'b'),
-    TAG_INT16: _make_struct_deserializer(TAG_INT16, 'h'),
-    TAG_INT32: _make_struct_deserializer(TAG_INT32, 'i'),
-    TAG_INT64: _make_struct_deserializer(TAG_INT64, 'q'),
-    TAG_BINARY: _make_string_deserializer(TAG_BINARY, lambda b: b),
-    TAG_UTF8: _make_string_deserializer(TAG_UTF8, lambda b: b.decode('utf-8')),
-    TAG_UTF16: _make_string_deserializer(TAG_UTF16, lambda b: b.decode('utf-16')),
-    TAG_UTF32: _make_string_deserializer(TAG_UTF32, lambda b: b.decode('utf-32')),
-    TAG_TUPLE: _deserialize_tuple,
-}
-
-def _deserialize_partial(b):
-    tag = b.read(1)
-    assert len(tag) == 1
-    bytes_read, to = _TAGS_TO_PARSERS[tag[0]](b)
-    return bytes_read + 1, to
-
-def deserialize(b):
-    if isinstance(b, bytes):
-        b = io.BytesIO(b)
-
-    bytes_read, result = _deserialize_partial(b)
-
-    remainder = b.read()
-
-    if len(remainder) == 0:
-        return result
-
-    raise Exception('Unable to parse remainder: {}'.format(remainder))