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-- --
-- --------------------------------------------------------------------------------
-- -- FILE: protobuf.lua
-- -- DESCRIPTION: protoc-gen-lua
-- -- Google's Protocol Buffers project, ported to lua.
-- -- https://code.google.com/p/protoc-gen-lua/
-- --
-- -- Copyright (c) 2010 , 林卓毅 (Zhuoyi Lin) netsnail@gmail.com
-- -- All rights reserved.
-- --
-- -- Use, modification and distribution are subject to the "New BSD License"
-- -- as listed at <url: http://www.opensource.org/licenses/bsd-license.php >.
-- --
-- -- COMPANY: NetEase
-- -- CREATED: 2010年07月29日 14时30分02秒 CST
-- --------------------------------------------------------------------------------
-- --
-- local setmetatable = setmetatable
-- local rawset = rawset
-- local rawget = rawget
-- local error = error
-- local ipairs = ipairs
-- local pairs = pairs
-- local print = print
-- local table = table
-- local string = string
-- local tostring = tostring
-- local type = type
-- local pb = require "pb"
-- local wire_format = require "protobuf.wire_format"
-- local type_checkers = require "protobuf.type_checkers"
-- local encoder = require "protobuf.encoder"
-- local decoder = require "protobuf.decoder"
-- local listener_mod = require "protobuf.listener"
-- local containers = require "protobuf.containers"
-- local descriptor = require "protobuf.descriptor"
-- local FieldDescriptor = descriptor.FieldDescriptor
-- local text_format = require "protobuf.text_format"
-- module("protobuf.protobuf")
-- local function make_descriptor(name, descriptor, usable_key)
-- local meta = {
-- __newindex = function(self, key, value)
-- if usable_key[key] then
-- rawset(self, key, value)
-- else
-- LogError("error key: "..key)
-- end
-- end
-- };
-- meta.__index = meta
-- meta.__call = function()
-- return setmetatable({}, meta)
-- end
-- _M[name] = setmetatable(descriptor, meta);
-- end
-- make_descriptor("Descriptor", {}, {
-- name = true,
-- full_name = true,
-- filename = true,
-- containing_type = true,
-- fields = true,
-- nested_types = true,
-- enum_types = true,
-- extensions = true,
-- options = true,
-- is_extendable = true,
-- extension_ranges = true,
-- })
-- make_descriptor("FieldDescriptor", FieldDescriptor, {
-- name = true,
-- full_name = true,
-- index = true,
-- number = true,
-- type = true,
-- cpp_type = true,
-- label = true,
-- has_default_value = true,
-- default_value = true,
-- containing_type = true,
-- message_type = true,
-- enum_type = true,
-- is_extension = true,
-- extension_scope = true,
-- })
-- make_descriptor("EnumDescriptor", {}, {
-- name = true,
-- full_name = true,
-- values = true,
-- containing_type = true,
-- options = true
-- })
-- make_descriptor("EnumValueDescriptor", {}, {
-- name = true,
-- index = true,
-- number = true,
-- type = true,
-- options = true
-- })
-- -- Maps from field type to expected wiretype.
-- local FIELD_TYPE_TO_WIRE_TYPE = {
-- [FieldDescriptor.TYPE_DOUBLE] = wire_format.WIRETYPE_FIXED64,
-- [FieldDescriptor.TYPE_FLOAT] = wire_format.WIRETYPE_FIXED32,
-- [FieldDescriptor.TYPE_INT64] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_UINT64] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_INT32] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_FIXED64] = wire_format.WIRETYPE_FIXED64,
-- [FieldDescriptor.TYPE_FIXED32] = wire_format.WIRETYPE_FIXED32,
-- [FieldDescriptor.TYPE_BOOL] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_STRING] = wire_format.WIRETYPE_LENGTH_DELIMITED,
-- [FieldDescriptor.TYPE_GROUP] = wire_format.WIRETYPE_START_GROUP,
-- [FieldDescriptor.TYPE_MESSAGE] = wire_format.WIRETYPE_LENGTH_DELIMITED,
-- [FieldDescriptor.TYPE_BYTES] = wire_format.WIRETYPE_LENGTH_DELIMITED,
-- [FieldDescriptor.TYPE_UINT32] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_ENUM] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_SFIXED32] = wire_format.WIRETYPE_FIXED32,
-- [FieldDescriptor.TYPE_SFIXED64] = wire_format.WIRETYPE_FIXED64,
-- [FieldDescriptor.TYPE_SINT32] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_SINT64] = wire_format.WIRETYPE_VARINT
-- }
-- local NON_PACKABLE_TYPES = {
-- [FieldDescriptor.TYPE_STRING] = true,
-- [FieldDescriptor.TYPE_GROUP] = true,
-- [FieldDescriptor.TYPE_MESSAGE] = true,
-- [FieldDescriptor.TYPE_BYTES] = true
-- }
-- local _VALUE_CHECKERS = {
-- [FieldDescriptor.CPPTYPE_INT32] = type_checkers.Int32ValueChecker(),
-- [FieldDescriptor.CPPTYPE_INT64] = type_checkers.TypeChecker({string = true, number = true}),
-- [FieldDescriptor.CPPTYPE_UINT32] = type_checkers.Uint32ValueChecker(),
-- [FieldDescriptor.CPPTYPE_UINT64] = type_checkers.TypeChecker({string = true, number = true}),
-- [FieldDescriptor.CPPTYPE_DOUBLE] = type_checkers.TypeChecker({number = true}),
-- [FieldDescriptor.CPPTYPE_FLOAT] = type_checkers.TypeChecker({number = true}),
-- [FieldDescriptor.CPPTYPE_BOOL] = type_checkers.TypeChecker({boolean = true, bool = true, int=true}),
-- [FieldDescriptor.CPPTYPE_ENUM] = type_checkers.Int32ValueChecker(),
-- [FieldDescriptor.CPPTYPE_STRING] = type_checkers.TypeChecker({string = true})
-- }
-- local TYPE_TO_BYTE_SIZE_FN = {
-- [FieldDescriptor.TYPE_DOUBLE] = wire_format.DoubleByteSize,
-- [FieldDescriptor.TYPE_FLOAT] = wire_format.FloatByteSize,
-- [FieldDescriptor.TYPE_INT64] = wire_format.Int64ByteSize,
-- [FieldDescriptor.TYPE_UINT64] = wire_format.UInt64ByteSize,
-- [FieldDescriptor.TYPE_INT32] = wire_format.Int32ByteSize,
-- [FieldDescriptor.TYPE_FIXED64] = wire_format.Fixed64ByteSize,
-- [FieldDescriptor.TYPE_FIXED32] = wire_format.Fixed32ByteSize,
-- [FieldDescriptor.TYPE_BOOL] = wire_format.BoolByteSize,
-- [FieldDescriptor.TYPE_STRING] = wire_format.StringByteSize,
-- [FieldDescriptor.TYPE_GROUP] = wire_format.GroupByteSize,
-- [FieldDescriptor.TYPE_MESSAGE] = wire_format.MessageByteSize,
-- [FieldDescriptor.TYPE_BYTES] = wire_format.BytesByteSize,
-- [FieldDescriptor.TYPE_UINT32] = wire_format.UInt32ByteSize,
-- [FieldDescriptor.TYPE_ENUM] = wire_format.EnumByteSize,
-- [FieldDescriptor.TYPE_SFIXED32] = wire_format.SFixed32ByteSize,
-- [FieldDescriptor.TYPE_SFIXED64] = wire_format.SFixed64ByteSize,
-- [FieldDescriptor.TYPE_SINT32] = wire_format.SInt32ByteSize,
-- [FieldDescriptor.TYPE_SINT64] = wire_format.SInt64ByteSize
-- }
-- local TYPE_TO_ENCODER = {
-- [FieldDescriptor.TYPE_DOUBLE] = encoder.DoubleEncoder,
-- [FieldDescriptor.TYPE_FLOAT] = encoder.FloatEncoder,
-- [FieldDescriptor.TYPE_INT64] = encoder.Int64Encoder,
-- [FieldDescriptor.TYPE_UINT64] = encoder.UInt64Encoder,
-- [FieldDescriptor.TYPE_INT32] = encoder.Int32Encoder,
-- [FieldDescriptor.TYPE_FIXED64] = encoder.Fixed64Encoder,
-- [FieldDescriptor.TYPE_FIXED32] = encoder.Fixed32Encoder,
-- [FieldDescriptor.TYPE_BOOL] = encoder.BoolEncoder,
-- [FieldDescriptor.TYPE_STRING] = encoder.StringEncoder,
-- [FieldDescriptor.TYPE_GROUP] = encoder.GroupEncoder,
-- [FieldDescriptor.TYPE_MESSAGE] = encoder.MessageEncoder,
-- [FieldDescriptor.TYPE_BYTES] = encoder.BytesEncoder,
-- [FieldDescriptor.TYPE_UINT32] = encoder.UInt32Encoder,
-- [FieldDescriptor.TYPE_ENUM] = encoder.EnumEncoder,
-- [FieldDescriptor.TYPE_SFIXED32] = encoder.SFixed32Encoder,
-- [FieldDescriptor.TYPE_SFIXED64] = encoder.SFixed64Encoder,
-- [FieldDescriptor.TYPE_SINT32] = encoder.SInt32Encoder,
-- [FieldDescriptor.TYPE_SINT64] = encoder.SInt64Encoder
-- }
-- local TYPE_TO_SIZER = {
-- [FieldDescriptor.TYPE_DOUBLE] = encoder.DoubleSizer,
-- [FieldDescriptor.TYPE_FLOAT] = encoder.FloatSizer,
-- [FieldDescriptor.TYPE_INT64] = encoder.Int64Sizer,
-- [FieldDescriptor.TYPE_UINT64] = encoder.UInt64Sizer,
-- [FieldDescriptor.TYPE_INT32] = encoder.Int32Sizer,
-- [FieldDescriptor.TYPE_FIXED64] = encoder.Fixed64Sizer,
-- [FieldDescriptor.TYPE_FIXED32] = encoder.Fixed32Sizer,
-- [FieldDescriptor.TYPE_BOOL] = encoder.BoolSizer,
-- [FieldDescriptor.TYPE_STRING] = encoder.StringSizer,
-- [FieldDescriptor.TYPE_GROUP] = encoder.GroupSizer,
-- [FieldDescriptor.TYPE_MESSAGE] = encoder.MessageSizer,
-- [FieldDescriptor.TYPE_BYTES] = encoder.BytesSizer,
-- [FieldDescriptor.TYPE_UINT32] = encoder.UInt32Sizer,
-- [FieldDescriptor.TYPE_ENUM] = encoder.EnumSizer,
-- [FieldDescriptor.TYPE_SFIXED32] = encoder.SFixed32Sizer,
-- [FieldDescriptor.TYPE_SFIXED64] = encoder.SFixed64Sizer,
-- [FieldDescriptor.TYPE_SINT32] = encoder.SInt32Sizer,
-- [FieldDescriptor.TYPE_SINT64] = encoder.SInt64Sizer
-- }
-- local TYPE_TO_DECODER = {
-- [FieldDescriptor.TYPE_DOUBLE] = decoder.DoubleDecoder,
-- [FieldDescriptor.TYPE_FLOAT] = decoder.FloatDecoder,
-- [FieldDescriptor.TYPE_INT64] = decoder.Int64Decoder,
-- [FieldDescriptor.TYPE_UINT64] = decoder.UInt64Decoder,
-- [FieldDescriptor.TYPE_INT32] = decoder.Int32Decoder,
-- [FieldDescriptor.TYPE_FIXED64] = decoder.Fixed64Decoder,
-- [FieldDescriptor.TYPE_FIXED32] = decoder.Fixed32Decoder,
-- [FieldDescriptor.TYPE_BOOL] = decoder.BoolDecoder,
-- [FieldDescriptor.TYPE_STRING] = decoder.StringDecoder,
-- [FieldDescriptor.TYPE_GROUP] = decoder.GroupDecoder,
-- [FieldDescriptor.TYPE_MESSAGE] = decoder.MessageDecoder,
-- [FieldDescriptor.TYPE_BYTES] = decoder.BytesDecoder,
-- [FieldDescriptor.TYPE_UINT32] = decoder.UInt32Decoder,
-- [FieldDescriptor.TYPE_ENUM] = decoder.EnumDecoder,
-- [FieldDescriptor.TYPE_SFIXED32] = decoder.SFixed32Decoder,
-- [FieldDescriptor.TYPE_SFIXED64] = decoder.SFixed64Decoder,
-- [FieldDescriptor.TYPE_SINT32] = decoder.SInt32Decoder,
-- [FieldDescriptor.TYPE_SINT64] = decoder.SInt64Decoder
-- }
-- local FIELD_TYPE_TO_WIRE_TYPE = {
-- [FieldDescriptor.TYPE_DOUBLE] = wire_format.WIRETYPE_FIXED64,
-- [FieldDescriptor.TYPE_FLOAT] = wire_format.WIRETYPE_FIXED32,
-- [FieldDescriptor.TYPE_INT64] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_UINT64] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_INT32] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_FIXED64] = wire_format.WIRETYPE_FIXED64,
-- [FieldDescriptor.TYPE_FIXED32] = wire_format.WIRETYPE_FIXED32,
-- [FieldDescriptor.TYPE_BOOL] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_STRING] = wire_format.WIRETYPE_LENGTH_DELIMITED,
-- [FieldDescriptor.TYPE_GROUP] = wire_format.WIRETYPE_START_GROUP,
-- [FieldDescriptor.TYPE_MESSAGE] = wire_format.WIRETYPE_LENGTH_DELIMITED,
-- [FieldDescriptor.TYPE_BYTES] = wire_format.WIRETYPE_LENGTH_DELIMITED,
-- [FieldDescriptor.TYPE_UINT32] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_ENUM] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_SFIXED32] = wire_format.WIRETYPE_FIXED32,
-- [FieldDescriptor.TYPE_SFIXED64] = wire_format.WIRETYPE_FIXED64,
-- [FieldDescriptor.TYPE_SINT32] = wire_format.WIRETYPE_VARINT,
-- [FieldDescriptor.TYPE_SINT64] = wire_format.WIRETYPE_VARINT
-- }
-- local function IsTypePackable(field_type)
-- return NON_PACKABLE_TYPES[field_type] == nil
-- end
-- local function GetTypeChecker(cpp_type, field_type)
-- if (cpp_type == FieldDescriptor.CPPTYPE_STRING and field_type == FieldDescriptor.TYPE_STRING) then
-- return type_checkers.UnicodeValueChecker()
-- end
-- return _VALUE_CHECKERS[cpp_type]
-- end
-- local function _DefaultValueConstructorForField(field)
-- if field.label == FieldDescriptor.LABEL_REPEATED then
-- if type(field.default_value) ~= "table" or #(field.default_value) ~= 0 then
-- LogError('Repeated field default value not empty list:' .. tostring(field.default_value))
-- end
-- if field.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- local message_type = field.message_type
-- return function (message)
-- return containers.RepeatedCompositeFieldContainer(message._listener_for_children, message_type)
-- end
-- else
-- local type_checker = GetTypeChecker(field.cpp_type, field.type)
-- return function (message)
-- return containers.RepeatedScalarFieldContainer(message._listener_for_children, type_checker)
-- end
-- end
-- end
-- if field.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- local message_type = field.message_type
-- return function (message)
-- result = message_type._concrete_class()
-- result._SetListener(message._listener_for_children)
-- return result
-- end
-- end
-- return function (message)
-- return field.default_value
-- end
-- end
-- local function _AttachFieldHelpers(message_meta, field_descriptor)
-- local is_repeated = (field_descriptor.label == FieldDescriptor.LABEL_REPEATED)
-- local is_packed = (field_descriptor.has_options and field_descriptor.GetOptions().packed)
-- rawset(field_descriptor, "_encoder", TYPE_TO_ENCODER[field_descriptor.type](field_descriptor.number, is_repeated, is_packed))
-- rawset(field_descriptor, "_sizer", TYPE_TO_SIZER[field_descriptor.type](field_descriptor.number, is_repeated, is_packed))
-- rawset(field_descriptor, "_default_constructor", _DefaultValueConstructorForField(field_descriptor))
-- local AddDecoder = function(wiretype, is_packed)
-- local tag_bytes = encoder.TagBytes(field_descriptor.number, wiretype)
-- message_meta._decoders_by_tag[tag_bytes] = TYPE_TO_DECODER[field_descriptor.type](field_descriptor.number, is_repeated, is_packed, field_descriptor, field_descriptor._default_constructor)
-- end
-- AddDecoder(FIELD_TYPE_TO_WIRE_TYPE[field_descriptor.type], False)
-- if is_repeated and IsTypePackable(field_descriptor.type) then
-- AddDecoder(wire_format.WIRETYPE_LENGTH_DELIMITED, True)
-- end
-- end
-- local function _AddEnumValues(descriptor, message_meta)
-- for _, enum_type in ipairs(descriptor.enum_types) do
-- for _, enum_value in ipairs(enum_type.values) do
-- message_meta._member[enum_value.name] = enum_value.number
-- end
-- end
-- end
-- local function _InitMethod(message_meta)
-- return function()
-- local self = {}
-- self._cached_byte_size = 0
-- self._cached_byte_size_dirty = false
-- self._fields = {}
-- self._is_present_in_parent = false
-- self._listener = listener_mod.NullMessageListener()
-- self._listener_for_children = listener_mod.Listener(self)
-- return setmetatable(self, message_meta)
-- end
-- end
-- local function _AddPropertiesForRepeatedField(field, message_meta)
-- local property_name = field.name
-- message_meta._getter[property_name] = function(self)
-- local field_value = self._fields[field]
-- if field_value == nil then
-- field_value = field._default_constructor(self)
-- self._fields[field] = field_value
-- if not self._cached_byte_size_dirty then
-- message_meta._member._Modified(self)
-- end
-- end
-- return field_value
-- end
-- message_meta._setter[property_name] = function(self)
-- LogError('Assignment not allowed to repeated field "' .. property_name .. '" in protocol message object.')
-- end
-- end
-- local function _AddPropertiesForNonRepeatedCompositeField(field, message_meta)
-- local property_name = field.name
-- local message_type = field.message_type
-- message_meta._getter[property_name] = function(self)
-- local field_value = self._fields[field]
-- if field_value == nil then
-- field_value = message_type._concrete_class()
-- field_value:_SetListener(self._listener_for_children)
-- self._fields[field] = field_value
-- if not self._cached_byte_size_dirty then
-- message_meta._member._Modified(self)
-- end
-- end
-- return field_value
-- end
-- message_meta._setter[property_name] = function(self, new_value)
-- LogError('Assignment not allowed to composite field' .. property_name .. 'in protocol message object.' )
-- end
-- end
-- local function _AddPropertiesForNonRepeatedScalarField(field, message)
-- local property_name = field.name
-- local type_checker = GetTypeChecker(field.cpp_type, field.type)
-- local default_value = field.default_value
-- message._getter[property_name] = function(self)
-- local value = self._fields[field]
-- if value ~= nil then
-- return self._fields[field]
-- else
-- return default_value
-- end
-- end
-- message._setter[property_name] = function(self, new_value)
-- type_checker(new_value)
-- self._fields[field] = new_value
-- if not self._cached_byte_size_dirty then
-- message._member._Modified(self)
-- end
-- end
-- end
-- local function _AddPropertiesForField(field, message_meta)
-- constant_name = field.name:upper() .. "_FIELD_NUMBER"
-- message_meta._member[constant_name] = field.number
-- if field.label == FieldDescriptor.LABEL_REPEATED then
-- _AddPropertiesForRepeatedField(field, message_meta)
-- elseif field.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- _AddPropertiesForNonRepeatedCompositeField(field, message_meta)
-- else
-- _AddPropertiesForNonRepeatedScalarField(field, message_meta)
-- end
-- end
-- local _ED_meta = {
-- __index = function(self, extension_handle)
-- local _extended_message = rawget(self, "_extended_message")
-- local value = _extended_message._fields[extension_handle]
-- if value ~= nil then
-- return value
-- end
-- if extension_handle.label == FieldDescriptor.LABEL_REPEATED then
-- value = extension_handle._default_constructor(self._extended_message)
-- elseif extension_handle.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- value = extension_handle.message_type._concrete_class()
-- value:_SetListener(_extended_message._listener_for_children)
-- else
-- return extension_handle.default_value
-- end
-- _extended_message._fields[extension_handle] = value
-- return value
-- end,
-- __newindex = function(self, extension_handle, value)
-- local _extended_message = rawget(self, "_extended_message")
-- if (extension_handle.label == FieldDescriptor.LABEL_REPEATED or
-- extension_handle.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE) then
-- error('Cannot assign to extension "'.. extension_handle.full_name .. '" because it is a repeated or composite type.')
-- end
-- local type_checker = GetTypeChecker(extension_handle.cpp_type, extension_handle.type)
-- type_checker.CheckValue(value)
-- _extended_message._fields[extension_handle] = value
-- _extended_message._Modified()
-- end
-- }
-- local function _ExtensionDict(message)
-- local o = {}
-- o._extended_message = message
-- return setmetatable(o, _ED_meta)
-- end
-- local function _AddPropertiesForFields(descriptor, message_meta)
-- for _, field in ipairs(descriptor.fields) do
-- _AddPropertiesForField(field, message_meta)
-- end
-- if descriptor.is_extendable then
-- message_meta._getter.Extensions = function(self) return _ExtensionDict(self) end
-- end
-- end
-- local function _AddPropertiesForExtensions(descriptor, message_meta)
-- local extension_dict = descriptor._extensions_by_name
-- for extension_name, extension_field in pairs(extension_dict) do
-- local constant_name = string.upper(extension_name) .. "_FIELD_NUMBER"
-- message_meta._member[constant_name] = extension_field.number
-- end
-- end
-- local function _AddStaticMethods(message_meta)
-- message_meta._member.RegisterExtension = function(extension_handle)
-- extension_handle.containing_type = message_meta._descriptor
-- _AttachFieldHelpers(message_meta, extension_handle)
-- if message_meta._extensions_by_number[extension_handle.number] == nil then
-- message_meta._extensions_by_number[extension_handle.number] = extension_handle
-- else
-- LogError(
-- string.format('Extensions "%s" and "%s" both try to extend message type "%s" with field number %d.',
-- extension_handle.full_name, actual_handle.full_name,
-- message_meta._descriptor.full_name, extension_handle.number))
-- end
-- message_meta._extensions_by_name[extension_handle.full_name] = extension_handle
-- end
-- message_meta._member.FromString = function(s)
-- local message = message_meta._member.__call()
-- message.MergeFromString(s)
-- return message
-- end
-- end
-- local function _IsPresent(descriptor, value)
-- if descriptor.label == FieldDescriptor.LABEL_REPEATED then
-- return value
-- elseif descriptor.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- return value._is_present_in_parent
-- else
-- return true
-- end
-- end
-- function sortFunc(a, b)
-- return a.index < b.index
-- end
-- function pairsByKeys (t, f)
-- local a = {}
-- for n in pairs(t) do table.insert(a, n) end
-- table.sort(a, f)
-- local i = 0 -- iterator variable
-- local iter = function () -- iterator function
-- i = i + 1
-- if a[i] == nil then return nil
-- else return a[i], t[a[i]]
-- end
-- end
-- return iter
-- end
-- local function _AddListFieldsMethod(message_descriptor, message_meta)
-- message_meta._member.ListFields = function (self)
-- local list_field = function(fields)
-- --local f, s, v = pairs(self._fields)
-- local f,s,v = pairsByKeys(self._fields, sortFunc)
-- local iter = function(a, i)
-- while true do
-- local descriptor, value = f(a, i)
-- if descriptor == nil then
-- return
-- elseif _IsPresent(descriptor, value) then
-- return descriptor, value
-- end
-- end
-- end
-- return iter, s, v
-- end
-- return list_field(self._fields)
-- end
-- end
-- local function _AddHasFieldMethod(message_descriptor, message_meta)
-- local singular_fields = {}
-- for _, field in ipairs(message_descriptor.fields) do
-- if field.label ~= FieldDescriptor.LABEL_REPEATED then
-- singular_fields[field.name] = field
-- end
-- end
-- message_meta._member.HasField = function (self, field_name)
-- field = singular_fields[field_name]
-- if field == nil then
-- LogError('Protocol message has no singular "'.. field_name.. '" field.')
-- end
-- if field.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- value = self._fields[field]
-- return value ~= nil and value._is_present_in_parent
-- else
-- local valueTmp = self._fields[field]
-- return valueTmp ~= nil
-- end
-- end
-- end
-- local function _AddClearFieldMethod(message_descriptor, message_meta)
-- local singular_fields = {}
-- for _, field in ipairs(message_descriptor.fields) do
-- if field.label ~= FieldDescriptor.LABEL_REPEATED then
-- singular_fields[field.name] = field
-- end
-- end
-- message_meta._member.ClearField = function(self, field_name)
-- field = singular_fields[field_name]
-- if field == nil then
-- LogError('Protocol message has no singular "'.. field_name.. '" field.')
-- end
-- if self._fields[field] then
-- self._fields[field] = nil
-- end
-- message_meta._member._Modified(self)
-- end
-- end
-- local function _AddClearExtensionMethod(message_meta)
-- message_meta._member.ClearExtension = function(self, extension_handle)
-- if self._fields[extension_handle] == nil then
-- self._fields[extension_handle] = nil
-- end
-- message_meta._member._Modified(self)
-- end
-- end
-- local function _AddClearMethod(message_descriptor, message_meta)
-- message_meta._member.Clear = function(self)
-- self._fields = {}
-- message_meta._member._Modified(self)
-- end
-- end
-- local function _AddStrMethod(message_meta)
-- local format = text_format.msg_format
-- message_meta.__tostring = function(self)
-- return format(self)
-- end
-- end
-- local function _AddHasExtensionMethod(message_meta)
-- message_meta._member.HasExtension = function(self, extension_handle)
-- if extension_handle.label == FieldDescriptor.LABEL_REPEATED then
-- LogError(extension_handle.full_name .. ' is repeated.')
-- end
-- if extension_handle.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- value = self._fields[extension_handle]
-- return value ~= nil and value._is_present_in_parent
-- else
-- return self._fields[extension_handle]
-- end
-- end
-- end
-- local function _AddSetListenerMethod(message_meta)
-- message_meta._member._SetListener = function(self, listener)
-- if listener ~= nil then
-- self._listener = listener_mod.NullMessageListener()
-- else
-- self._listener = listener
-- end
-- end
-- end
-- local function _AddByteSizeMethod(message_descriptor, message_meta)
-- message_meta._member.ByteSize = function(self)
-- --kaiser
-- --bug:这里在Repeat字段的结构体如果第一个字段不是int变量会产生_cached_byte_size_dirty为false而导致byte size为0
-- --如果bytesize为0让它强制计算byte size
-- if not self._cached_byte_size_dirty and self._cached_byte_size > 0 then
-- return self._cached_byte_size
-- end
-- local size = 0
-- for field_descriptor, field_value in message_meta._member.ListFields(self) do
-- size = field_descriptor._sizer(field_value) + size
-- end
-- self._cached_byte_size = size
-- self._cached_byte_size_dirty = false
-- self._listener_for_children.dirty = false
-- return size
-- end
-- end
-- local function _AddSerializeToStringMethod(message_descriptor, message_meta)
-- message_meta._member.SerializeToString = function(self)
-- if not message_meta._member.IsInitialized(self) then
-- LogError('Message is missing required fields: ' ..
-- table.concat(message_meta._member.FindInitializationErrors(self), ','))
-- end
-- return message_meta._member.SerializePartialToString(self)
-- end
-- message_meta._member.SerializeToIOString = function(self, iostring)
-- if not message_meta._member.IsInitialized(self) then
-- LogError('Message is missing required fields: ' ..
-- table.concat(message_meta._member.FindInitializationErrors(self), ','))
-- end
-- return message_meta._member.SerializePartialToIOString(self, iostring)
-- end
-- end
-- local function _AddSerializePartialToStringMethod(message_descriptor, message_meta)
-- local concat = table.concat
-- local _internal_serialize = function(self, write_bytes)
-- for field_descriptor, field_value in message_meta._member.ListFields(self) do
-- field_descriptor._encoder(write_bytes, field_value)
-- end
-- end
-- local _serialize_partial_to_iostring = function(self, iostring)
-- local w = iostring.write
-- local write = function(value)
-- w(iostring, value)
-- end
-- _internal_serialize(self, write)
-- return
-- end
-- local _serialize_partial_to_string = function(self)
-- local out = {}
-- local write = function(value)
-- out[#out + 1] = value
-- end
-- _internal_serialize(self, write)
-- return concat(out)
-- end
-- message_meta._member._InternalSerialize = _internal_serialize
-- message_meta._member.SerializePartialToIOString = _serialize_partial_to_iostring
-- message_meta._member.SerializePartialToString = _serialize_partial_to_string
-- end
-- local function _AddMergeFromStringMethod(message_descriptor, message_meta)
-- local ReadTag = decoder.ReadTag
-- local SkipField = decoder.SkipField
-- local decoders_by_tag = message_meta._decoders_by_tag
-- local _internal_parse = function(self, buffer, pos, pend)
-- message_meta._member._Modified(self)
-- local field_dict = self._fields
-- local tag_bytes, new_pos
-- local field_decoder
-- while pos ~= pend do
-- tag_bytes, new_pos = ReadTag(buffer, pos)
-- field_decoder = decoders_by_tag[tag_bytes]
-- if field_decoder == nil then
-- new_pos = SkipField(buffer, new_pos, pend, tag_bytes)
-- if new_pos == -1 then
-- return pos
-- end
-- pos = new_pos
-- else
-- pos = field_decoder(buffer, new_pos, pend, self, field_dict)
-- end
-- end
-- return pos
-- end
-- message_meta._member._InternalParse = _internal_parse
-- local merge_from_string = function(self, serialized)
-- local length = #serialized
-- if _internal_parse(self, serialized, 0, length) ~= length then
-- LogError('Unexpected end-group tag.')
-- end
-- return length
-- end
-- message_meta._member.MergeFromString = merge_from_string
-- message_meta._member.ParseFromString = function(self, serialized)
-- message_meta._member.Clear(self)
-- merge_from_string(self, serialized)
-- end
-- end
-- local function _AddIsInitializedMethod(message_descriptor, message_meta)
-- local required_fields = {}
-- for _, field in ipairs(message_descriptor.fields) do
-- if field.label == FieldDescriptor.LABEL_REQUIRED then
-- required_fields[#required_fields + 1] = field
-- end
-- end
-- message_meta._member.IsInitialized = function(self, errors)
-- for _, field in ipairs(required_fields) do
-- if self._fields[field] == nil or
-- (field.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE and not self._fields[field]._is_present_in_parent) then
-- if errors ~= nil then
-- errors[#errors + 1] = message_meta._member.FindInitializationErrors(self)
-- end
-- return false
-- end
-- end
-- for field, value in pairs(self._fields) do
-- if field.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- if field.label == FieldDescriptor.LABEL_REPEATED then
-- for _, element in ipairs(value) do
-- if not element:IsInitialized() then
-- if errors ~= nil then
-- errors[#errors + 1] = message_meta._member.FindInitializationErrors(self)
-- end
-- return false
-- end
-- end
-- elseif value._is_present_in_parent and not value:IsInitialized() then
-- if errors ~= nil then
-- errors[#errors + 1] = message_meta._member.FindInitializationErrors(self)
-- end
-- return false
-- end
-- end
-- end
-- return true
-- end
-- message_meta._member.FindInitializationErrors = function(self)
-- local errors = {}
-- for _,field in ipairs(required_fields) do
-- if not message_meta._member.HasField(self, field.name) then
-- errors.append(field.name)
-- end
-- end
-- for field, value in message_meta._member.ListFields(self) do
-- if field.cpp_type == FieldDescriptor.CPPTYPE_MESSAGE then
-- if field.is_extension then
-- name = io:format("(%s)", field.full_name)
-- else
-- name = field.name
-- end
-- if field.label == FieldDescriptor.LABEL_REPEATED then
-- for i, element in ipairs(value) do
-- prefix = io:format("%s[%d].", name, i)
-- sub_errors = element:FindInitializationErrors()
-- for _, e in ipairs(sub_errors) do
-- errors[#errors + 1] = prefix .. e
-- end
-- end
-- else
-- prefix = name .. "."
-- sub_errors = value:FindInitializationErrors()
-- for _, e in ipairs(sub_errors) do
-- errors[#errors + 1] = prefix .. e
-- end
-- end
-- end
-- end
-- return errors
-- end
-- end
-- local function _AddMergeFromMethod(message_meta)
-- local LABEL_REPEATED = FieldDescriptor.LABEL_REPEATED
-- local CPPTYPE_MESSAGE = FieldDescriptor.CPPTYPE_MESSAGE
-- message_meta._member.MergeFrom = function (self, msg)
-- assert(msg ~= self)
-- message_meta._member._Modified(self)
-- local fields = self._fields
-- for field, value in pairs(msg._fields) do
-- if field.label == LABEL_REPEATED or field.cpp_type == CPPTYPE_MESSAGE then
-- field_value = fields[field]
-- if field_value == nil then
-- field_value = field._default_constructor(self)
-- fields[field] = field_value
-- end
-- field_value:MergeFrom(value)
-- else
-- self._fields[field] = value
-- end
-- end
-- end
-- end
-- local function _AddMessageMethods(message_descriptor, message_meta)
-- _AddListFieldsMethod(message_descriptor, message_meta)
-- _AddHasFieldMethod(message_descriptor, message_meta)
-- _AddClearFieldMethod(message_descriptor, message_meta)
-- if message_descriptor.is_extendable then
-- _AddClearExtensionMethod(message_meta)
-- _AddHasExtensionMethod(message_meta)
-- end
-- _AddClearMethod(message_descriptor, message_meta)
-- -- _AddEqualsMethod(message_descriptor, message_meta)
-- _AddStrMethod(message_meta)
-- _AddSetListenerMethod(message_meta)
-- _AddByteSizeMethod(message_descriptor, message_meta)
-- _AddSerializeToStringMethod(message_descriptor, message_meta)
-- _AddSerializePartialToStringMethod(message_descriptor, message_meta)
-- _AddMergeFromStringMethod(message_descriptor, message_meta)
-- _AddIsInitializedMethod(message_descriptor, message_meta)
-- _AddMergeFromMethod(message_meta)
-- end
-- local function _AddPrivateHelperMethods(message_meta)
-- local Modified = function (self)
-- if not self._cached_byte_size_dirty then
-- self._cached_byte_size_dirty = true
-- self._listener_for_children.dirty = true
-- self._is_present_in_parent = true
-- self._listener:Modified()
-- end
-- end
-- message_meta._member._Modified = Modified
-- message_meta._member.SetInParent = Modified
-- end
-- local function property_getter(message_meta)
-- local getter = message_meta._getter
-- local member = message_meta._member
-- return function (self, property)
-- local g = getter[property]
-- if g then
-- return g(self)
-- else
-- return member[property]
-- end
-- end
-- end
-- local function property_setter(message_meta)
-- local setter = message_meta._setter
-- return function (self, property, value)
-- local s = setter[property]
-- if s then
-- s(self, value)
-- else
-- LogError(property .. " not found")
-- end
-- end
-- end
-- function _AddClassAttributesForNestedExtensions(descriptor, message_meta)
-- local extension_dict = descriptor._extensions_by_name
-- for extension_name, extension_field in pairs(extension_dict) do
-- message_meta._member[extension_name] = extension_field
-- end
-- end
-- local function Message(descriptor)
-- local message_meta = {}
-- message_meta._decoders_by_tag = {}
-- rawset(descriptor, "_extensions_by_name", {})
-- for _, k in ipairs(descriptor.extensions) do
-- descriptor._extensions_by_name[k.name] = k
-- end
-- rawset(descriptor, "_extensions_by_number", {})
-- for _, k in ipairs(descriptor.extensions) do
-- descriptor._extensions_by_number[k.number] = k
-- end
-- message_meta._descriptor = descriptor
-- message_meta._extensions_by_name = {}
-- message_meta._extensions_by_number = {}
-- message_meta._getter = {}
-- message_meta._setter = {}
-- message_meta._member = {}
-- -- message_meta._name = descriptor.full_name
-- local ns = setmetatable({}, message_meta._member)
-- message_meta._member.__call = _InitMethod(message_meta)
-- message_meta._member.__index = message_meta._member
-- message_meta._member.type = ns
-- if rawget(descriptor, "_concrete_class") == nil then
-- rawset(descriptor, "_concrete_class", ns)
-- for k, field in ipairs(descriptor.fields) do
-- _AttachFieldHelpers(message_meta, field)
-- end
-- end
-- _AddEnumValues(descriptor, message_meta)
-- _AddClassAttributesForNestedExtensions(descriptor, message_meta)
-- _AddPropertiesForFields(descriptor, message_meta)
-- _AddPropertiesForExtensions(descriptor, message_meta)
-- _AddStaticMethods(message_meta)
-- _AddMessageMethods(descriptor, message_meta)
-- _AddPrivateHelperMethods(message_meta)
-- message_meta.__index = property_getter(message_meta)
-- message_meta.__newindex = property_setter(message_meta)
-- return ns
-- end
-- _M.Message = Message