google.protobuf.internal.decoder Namespace Reference

Functions
def	ReadTag (buffer, pos)
def	EnumDecoder (field_number, is_repeated, is_packed, key, new_default)
def	StringDecoder (field_number, is_repeated, is_packed, key, new_default)
def	BytesDecoder (field_number, is_repeated, is_packed, key, new_default)
def	GroupDecoder (field_number, is_repeated, is_packed, key, new_default)
def	MessageDecoder (field_number, is_repeated, is_packed, key, new_default)
def	MessageSetItemDecoder (extensions_by_number)
def	MapDecoder (field_descriptor, new_default, is_message_map)

Variables
	long = int
def	Int32Decoder
def	Int64Decoder
def	UInt32Decoder = _SimpleDecoder(wire_format.WIRETYPE_VARINT, _DecodeVarint32)
def	UInt64Decoder = _SimpleDecoder(wire_format.WIRETYPE_VARINT, _DecodeVarint)
def	SInt32Decoder
def	SInt64Decoder
def	Fixed32Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED32, '<I')
def	Fixed64Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED64, '<Q')
def	SFixed32Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED32, '<i')
def	SFixed64Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED64, '<q')
def	FloatDecoder = _FloatDecoder()
def	DoubleDecoder = _DoubleDecoder()
def	BoolDecoder
	MESSAGE_SET_ITEM_TAG = encoder.TagBytes(1, wire_format.WIRETYPE_START_GROUP)
def	SkipField = _FieldSkipper()

Function Documentation

BytesDecoder()

def google.protobuf.internal.decoder.BytesDecoder	(		field_number,
			is_repeated,
			is_packed,
			key,
			new_default
	)

Returns a decoder for a bytes field.

EnumDecoder()

def google.protobuf.internal.decoder.EnumDecoder	(		field_number,
			is_repeated,
			is_packed,
			key,
			new_default
	)

GroupDecoder()

def google.protobuf.internal.decoder.GroupDecoder	(		field_number,
			is_repeated,
			is_packed,
			key,
			new_default
	)

Returns a decoder for a group field.

MapDecoder()

def google.protobuf.internal.decoder.MapDecoder	(		field_descriptor,
			new_default,
			is_message_map
	)

Returns a decoder for a map field.

MessageDecoder()

def google.protobuf.internal.decoder.MessageDecoder	(		field_number,
			is_repeated,
			is_packed,
			key,
			new_default
	)

Returns a decoder for a message field.

MessageSetItemDecoder()

def google.protobuf.internal.decoder.MessageSetItemDecoder

(

extensions_by_number

)

Returns a decoder for a MessageSet item.

The parameter is the _extensions_by_number map for the message class.

The message set message looks like this:
  message MessageSet {
    repeated group Item = 1 {
      required int32 type_id = 2;
      required string message = 3;
    }
  }

ReadTag()

def google.protobuf.internal.decoder.ReadTag	(		buffer,
			pos
	)

Read a tag from the buffer, and return a (tag_bytes, new_pos) tuple.

We return the raw bytes of the tag rather than decoding them.  The raw
bytes can then be used to look up the proper decoder.  This effectively allows
us to trade some work that would be done in pure-python (decoding a varint)
for work that is done in C (searching for a byte string in a hash table).
In a low-level language it would be much cheaper to decode the varint and
use that, but not in Python.

StringDecoder()

def google.protobuf.internal.decoder.StringDecoder	(		field_number,
			is_repeated,
			is_packed,
			key,
			new_default
	)

Returns a decoder for a string field.

Variable Documentation

BoolDecoder

def google.protobuf.internal.decoder.BoolDecoder

Initial value:

=  _ModifiedDecoder(
    wire_format.WIRETYPE_VARINT, _DecodeVarint, bool)

DoubleDecoder

def google.protobuf.internal.decoder.DoubleDecoder = _DoubleDecoder()

Fixed32Decoder

def google.protobuf.internal.decoder.Fixed32Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED32, '<I')

Fixed64Decoder

def google.protobuf.internal.decoder.Fixed64Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED64, '<Q')

FloatDecoder

def google.protobuf.internal.decoder.FloatDecoder = _FloatDecoder()

Int32Decoder

def google.protobuf.internal.decoder.Int32Decoder

Initial value:

=  _SimpleDecoder(
    wire_format.WIRETYPE_VARINT, _DecodeSignedVarint32)

Int64Decoder

def google.protobuf.internal.decoder.Int64Decoder

Initial value:

=  _SimpleDecoder(
    wire_format.WIRETYPE_VARINT, _DecodeSignedVarint)

long

google.protobuf.internal.decoder.long = int

MESSAGE_SET_ITEM_TAG

google.protobuf.internal.decoder.MESSAGE_SET_ITEM_TAG = encoder.TagBytes(1, wire_format.WIRETYPE_START_GROUP)

SFixed32Decoder

def google.protobuf.internal.decoder.SFixed32Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED32, '<i')

SFixed64Decoder

def google.protobuf.internal.decoder.SFixed64Decoder = _StructPackDecoder(wire_format.WIRETYPE_FIXED64, '<q')

SInt32Decoder

def google.protobuf.internal.decoder.SInt32Decoder

Initial value:

=  _ModifiedDecoder(
    wire_format.WIRETYPE_VARINT, _DecodeVarint32, wire_format.ZigZagDecode)

SInt64Decoder

def google.protobuf.internal.decoder.SInt64Decoder

Initial value:

=  _ModifiedDecoder(
    wire_format.WIRETYPE_VARINT, _DecodeVarint, wire_format.ZigZagDecode)

SkipField

def google.protobuf.internal.decoder.SkipField = _FieldSkipper()

UInt32Decoder

def google.protobuf.internal.decoder.UInt32Decoder = _SimpleDecoder(wire_format.WIRETYPE_VARINT, _DecodeVarint32)

UInt64Decoder

def google.protobuf.internal.decoder.UInt64Decoder = _SimpleDecoder(wire_format.WIRETYPE_VARINT, _DecodeVarint)