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flutter / third_party / protobuf / 6ed738305bc0770832148109057cf22a6d9ee98a / . / src / google / protobuf / generated_message_reflection.cc
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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include <google/protobuf/generated_message_reflection.h>
#include <algorithm>
#include <set>
#include <google/protobuf/stubs/logging.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/extension_set.h>
#include <google/protobuf/generated_message_util.h>
#include <google/protobuf/inlined_string_field.h>
#include <google/protobuf/map_field.h>
#include <google/protobuf/map_field_inl.h>
#include <google/protobuf/stubs/mutex.h>
#include <google/protobuf/repeated_field.h>
#include <google/protobuf/unknown_field_set.h>
#include <google/protobuf/wire_format.h>
#include <google/protobuf/port_def.inc>
#define GOOGLE_PROTOBUF_HAS_ONEOF
using google::protobuf::internal::ArenaStringPtr;
using google::protobuf::internal::DescriptorTable;
using google::protobuf::internal::ExtensionSet;
using google::protobuf::internal::GenericTypeHandler;
using google::protobuf::internal::GetEmptyString;
using google::protobuf::internal::InlinedStringField;
using google::protobuf::internal::InternalMetadata;
using google::protobuf::internal::LazyField;
using google::protobuf::internal::MapFieldBase;
using google::protobuf::internal::MigrationSchema;
using google::protobuf::internal::OnShutdownDelete;
using google::protobuf::internal::ReflectionSchema;
using google::protobuf::internal::RepeatedPtrFieldBase;
using google::protobuf::internal::StringSpaceUsedExcludingSelfLong;
using google::protobuf::internal::WrappedMutex;
namespace google {
namespace protobuf {
namespace {
bool IsMapFieldInApi(const FieldDescriptor* field) { return field->is_map(); }
} // anonymous namespace
namespace internal {
bool ParseNamedEnum(const EnumDescriptor* descriptor, const std::string& name,
int* value) {
const EnumValueDescriptor* d = descriptor->FindValueByName(name);
if (d == nullptr) return false;
*value = d->number();
return true;
}
const std::string& NameOfEnum(const EnumDescriptor* descriptor, int value) {
const EnumValueDescriptor* d = descriptor->FindValueByNumber(value);
return (d == nullptr ? GetEmptyString() : d->name());
}
} // namespace internal
// ===================================================================
// Helpers for reporting usage errors (e.g. trying to use GetInt32() on
// a string field).
namespace {
using internal::GetConstPointerAtOffset;
using internal::GetConstRefAtOffset;
using internal::GetPointerAtOffset;
void ReportReflectionUsageError(const Descriptor* descriptor,
const FieldDescriptor* field,
const char* method, const char* description) {
GOOGLE_LOG(FATAL) << "Protocol Buffer reflection usage error:\n"
" Method : google::protobuf::Reflection::"
<< method
<< "\n"
" Message type: "
<< descriptor->full_name()
<< "\n"
" Field : "
<< field->full_name()
<< "\n"
" Problem : "
<< description;
}
const char* cpptype_names_[FieldDescriptor::MAX_CPPTYPE + 1] = {
"INVALID_CPPTYPE", "CPPTYPE_INT32", "CPPTYPE_INT64", "CPPTYPE_UINT32",
"CPPTYPE_UINT64", "CPPTYPE_DOUBLE", "CPPTYPE_FLOAT", "CPPTYPE_BOOL",
"CPPTYPE_ENUM", "CPPTYPE_STRING", "CPPTYPE_MESSAGE"};
static void ReportReflectionUsageTypeError(
const Descriptor* descriptor, const FieldDescriptor* field,
const char* method, FieldDescriptor::CppType expected_type) {
GOOGLE_LOG(FATAL)
<< "Protocol Buffer reflection usage error:\n"
" Method : google::protobuf::Reflection::"
<< method
<< "\n"
" Message type: "
<< descriptor->full_name()
<< "\n"
" Field : "
<< field->full_name()
<< "\n"
" Problem : Field is not the right type for this message:\n"
" Expected : "
<< cpptype_names_[expected_type]
<< "\n"
" Field type: "
<< cpptype_names_[field->cpp_type()];
}
static void ReportReflectionUsageEnumTypeError(
const Descriptor* descriptor, const FieldDescriptor* field,
const char* method, const EnumValueDescriptor* value) {
GOOGLE_LOG(FATAL) << "Protocol Buffer reflection usage error:\n"
" Method : google::protobuf::Reflection::"
<< method
<< "\n"
" Message type: "
<< descriptor->full_name()
<< "\n"
" Field : "
<< field->full_name()
<< "\n"
" Problem : Enum value did not match field type:\n"
" Expected : "
<< field->enum_type()->full_name()
<< "\n"
" Actual : "
<< value->full_name();
}
inline void CheckInvalidAccess(const internal::ReflectionSchema& schema,
const FieldDescriptor* field) {
GOOGLE_CHECK(!schema.IsFieldStripped(field))
<< "invalid access to a stripped field " << field->full_name();
}
#define USAGE_CHECK(CONDITION, METHOD, ERROR_DESCRIPTION) \
if (!(CONDITION)) \
ReportReflectionUsageError(descriptor_, field, #METHOD, ERROR_DESCRIPTION)
#define USAGE_CHECK_EQ(A, B, METHOD, ERROR_DESCRIPTION) \
USAGE_CHECK((A) == (B), METHOD, ERROR_DESCRIPTION)
#define USAGE_CHECK_NE(A, B, METHOD, ERROR_DESCRIPTION) \
USAGE_CHECK((A) != (B), METHOD, ERROR_DESCRIPTION)
#define USAGE_CHECK_TYPE(METHOD, CPPTYPE) \
if (field->cpp_type() != FieldDescriptor::CPPTYPE_##CPPTYPE) \
ReportReflectionUsageTypeError(descriptor_, field, #METHOD, \
FieldDescriptor::CPPTYPE_##CPPTYPE)
#define USAGE_CHECK_ENUM_VALUE(METHOD) \
if (value->type() != field->enum_type()) \
ReportReflectionUsageEnumTypeError(descriptor_, field, #METHOD, value)
#define USAGE_CHECK_MESSAGE_TYPE(METHOD) \
USAGE_CHECK_EQ(field->containing_type(), descriptor_, METHOD, \
"Field does not match message type.");
#define USAGE_CHECK_SINGULAR(METHOD) \
USAGE_CHECK_NE(field->label(), FieldDescriptor::LABEL_REPEATED, METHOD, \
"Field is repeated; the method requires a singular field.")
#define USAGE_CHECK_REPEATED(METHOD) \
USAGE_CHECK_EQ(field->label(), FieldDescriptor::LABEL_REPEATED, METHOD, \
"Field is singular; the method requires a repeated field.")
#define USAGE_CHECK_ALL(METHOD, LABEL, CPPTYPE) \
USAGE_CHECK_MESSAGE_TYPE(METHOD); \
USAGE_CHECK_##LABEL(METHOD); \
USAGE_CHECK_TYPE(METHOD, CPPTYPE)
} // namespace
// ===================================================================
Reflection::Reflection(const Descriptor* descriptor,
const internal::ReflectionSchema& schema,
const DescriptorPool* pool, MessageFactory* factory)
: descriptor_(descriptor),
schema_(schema),
descriptor_pool_(
(pool == nullptr) ? DescriptorPool::internal_generated_pool() : pool),
message_factory_(factory),
last_non_weak_field_index_(-1) {
last_non_weak_field_index_ = descriptor_->field_count() - 1;
}
const UnknownFieldSet& Reflection::GetUnknownFields(
const Message& message) const {
return GetInternalMetadata(message).unknown_fields<UnknownFieldSet>(
UnknownFieldSet::default_instance);
}
UnknownFieldSet* Reflection::MutableUnknownFields(Message* message) const {
return MutableInternalMetadata(message)
->mutable_unknown_fields<UnknownFieldSet>();
}
size_t Reflection::SpaceUsedLong(const Message& message) const {
// object_size_ already includes the in-memory representation of each field
// in the message, so we only need to account for additional memory used by
// the fields.
size_t total_size = schema_.GetObjectSize();
total_size += GetUnknownFields(message).SpaceUsedExcludingSelfLong();
if (schema_.HasExtensionSet()) {
total_size += GetExtensionSet(message).SpaceUsedExcludingSelfLong();
}
for (int i = 0; i <= last_non_weak_field_index_; i++) {
const FieldDescriptor* field = descriptor_->field(i);
if (field->is_repeated()) {
switch (field->cpp_type()) {
#define HANDLE_TYPE(UPPERCASE, LOWERCASE) \
case FieldDescriptor::CPPTYPE_##UPPERCASE: \
total_size += GetRaw<RepeatedField<LOWERCASE> >(message, field) \
.SpaceUsedExcludingSelfLong(); \
break
HANDLE_TYPE(INT32, int32);
HANDLE_TYPE(INT64, int64);
HANDLE_TYPE(UINT32, uint32);
HANDLE_TYPE(UINT64, uint64);
HANDLE_TYPE(DOUBLE, double);
HANDLE_TYPE(FLOAT, float);
HANDLE_TYPE(BOOL, bool);
HANDLE_TYPE(ENUM, int);
#undef HANDLE_TYPE
case FieldDescriptor::CPPTYPE_STRING:
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
total_size +=
GetRaw<RepeatedPtrField<std::string> >(message, field)
.SpaceUsedExcludingSelfLong();
break;
}
break;
case FieldDescriptor::CPPTYPE_MESSAGE:
if (IsMapFieldInApi(field)) {
total_size += GetRaw<internal::MapFieldBase>(message, field)
.SpaceUsedExcludingSelfLong();
} else {
// We don't know which subclass of RepeatedPtrFieldBase the type is,
// so we use RepeatedPtrFieldBase directly.
total_size +=
GetRaw<RepeatedPtrFieldBase>(message, field)
.SpaceUsedExcludingSelfLong<GenericTypeHandler<Message> >();
}
break;
}
} else {
if (schema_.InRealOneof(field) && !HasOneofField(message, field)) {
continue;
}
switch (field->cpp_type()) {
case FieldDescriptor::CPPTYPE_INT32:
case FieldDescriptor::CPPTYPE_INT64:
case FieldDescriptor::CPPTYPE_UINT32:
case FieldDescriptor::CPPTYPE_UINT64:
case FieldDescriptor::CPPTYPE_DOUBLE:
case FieldDescriptor::CPPTYPE_FLOAT:
case FieldDescriptor::CPPTYPE_BOOL:
case FieldDescriptor::CPPTYPE_ENUM:
// Field is inline, so we've already counted it.
break;
case FieldDescriptor::CPPTYPE_STRING: {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
if (IsInlined(field)) {
const std::string* ptr =
&GetField<InlinedStringField>(message, field).GetNoArena();
total_size += StringSpaceUsedExcludingSelfLong(*ptr);
break;
}
// Initially, the string points to the default value stored
// in the prototype. Only count the string if it has been
// changed from the default value.
const std::string* default_ptr =
&DefaultRaw<ArenaStringPtr>(field).Get();
const std::string* ptr =
&GetField<ArenaStringPtr>(message, field).Get();
if (ptr != default_ptr) {
// string fields are represented by just a pointer, so also
// include sizeof(string) as well.
total_size +=
sizeof(*ptr) + StringSpaceUsedExcludingSelfLong(*ptr);
}
break;
}
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE:
if (schema_.IsDefaultInstance(message)) {
// For singular fields, the prototype just stores a pointer to the
// external type's prototype, so there is no extra memory usage.
} else {
const Message* sub_message = GetRaw<const Message*>(message, field);
if (sub_message != nullptr) {
total_size += sub_message->SpaceUsedLong();
}
}
break;
}
}
}
return total_size;
}
void Reflection::SwapField(Message* message1, Message* message2,
const FieldDescriptor* field) const {
CheckInvalidAccess(schema_, field);
if (field->is_repeated()) {
switch (field->cpp_type()) {
#define SWAP_ARRAYS(CPPTYPE, TYPE) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
MutableRaw<RepeatedField<TYPE> >(message1, field) \
->Swap(MutableRaw<RepeatedField<TYPE> >(message2, field)); \
break;
SWAP_ARRAYS(INT32, int32);
SWAP_ARRAYS(INT64, int64);
SWAP_ARRAYS(UINT32, uint32);
SWAP_ARRAYS(UINT64, uint64);
SWAP_ARRAYS(FLOAT, float);
SWAP_ARRAYS(DOUBLE, double);
SWAP_ARRAYS(BOOL, bool);
SWAP_ARRAYS(ENUM, int);
#undef SWAP_ARRAYS
case FieldDescriptor::CPPTYPE_STRING:
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
MutableRaw<RepeatedPtrFieldBase>(message1, field)
->Swap<GenericTypeHandler<std::string> >(
MutableRaw<RepeatedPtrFieldBase>(message2, field));
break;
}
break;
case FieldDescriptor::CPPTYPE_MESSAGE:
if (IsMapFieldInApi(field)) {
MutableRaw<MapFieldBase>(message1, field)
->Swap(MutableRaw<MapFieldBase>(message2, field));
} else {
MutableRaw<RepeatedPtrFieldBase>(message1, field)
->Swap<GenericTypeHandler<Message> >(
MutableRaw<RepeatedPtrFieldBase>(message2, field));
}
break;
default:
GOOGLE_LOG(FATAL) << "Unimplemented type: " << field->cpp_type();
}
} else {
switch (field->cpp_type()) {
#define SWAP_VALUES(CPPTYPE, TYPE) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
std::swap(*MutableRaw<TYPE>(message1, field), \
*MutableRaw<TYPE>(message2, field)); \
break;
SWAP_VALUES(INT32, int32);
SWAP_VALUES(INT64, int64);
SWAP_VALUES(UINT32, uint32);
SWAP_VALUES(UINT64, uint64);
SWAP_VALUES(FLOAT, float);
SWAP_VALUES(DOUBLE, double);
SWAP_VALUES(BOOL, bool);
SWAP_VALUES(ENUM, int);
#undef SWAP_VALUES
case FieldDescriptor::CPPTYPE_MESSAGE:
if (GetArena(message1) == GetArena(message2)) {
std::swap(*MutableRaw<Message*>(message1, field),
*MutableRaw<Message*>(message2, field));
} else {
Message** sub_msg1 = MutableRaw<Message*>(message1, field);
Message** sub_msg2 = MutableRaw<Message*>(message2, field);
if (*sub_msg1 == nullptr && *sub_msg2 == nullptr) break;
if (*sub_msg1 && *sub_msg2) {
(*sub_msg1)->GetReflection()->Swap(*sub_msg1, *sub_msg2);
break;
}
if (*sub_msg1 == nullptr) {
*sub_msg1 = (*sub_msg2)->New(message1->GetArena());
(*sub_msg1)->CopyFrom(**sub_msg2);
ClearField(message2, field);
} else {
*sub_msg2 = (*sub_msg1)->New(message2->GetArena());
(*sub_msg2)->CopyFrom(**sub_msg1);
ClearField(message1, field);
}
}
break;
case FieldDescriptor::CPPTYPE_STRING:
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
Arena* arena1 = GetArena(message1);
Arena* arena2 = GetArena(message2);
if (IsInlined(field)) {
InlinedStringField* string1 =
MutableRaw<InlinedStringField>(message1, field);
InlinedStringField* string2 =
MutableRaw<InlinedStringField>(message2, field);
string1->Swap(string2);
break;
}
ArenaStringPtr* string1 =
MutableRaw<ArenaStringPtr>(message1, field);
ArenaStringPtr* string2 =
MutableRaw<ArenaStringPtr>(message2, field);
const std::string* default_ptr =
&DefaultRaw<ArenaStringPtr>(field).Get();
if (arena1 == arena2) {
string1->Swap(string2, default_ptr, arena1);
} else {
const std::string temp = string1->Get();
string1->Set(default_ptr, string2->Get(), arena1);
string2->Set(default_ptr, temp, arena2);
}
} break;
}
break;
default:
GOOGLE_LOG(FATAL) << "Unimplemented type: " << field->cpp_type();
}
}
}
void Reflection::SwapOneofField(Message* message1, Message* message2,
const OneofDescriptor* oneof_descriptor) const {
GOOGLE_DCHECK(!oneof_descriptor->is_synthetic());
uint32 oneof_case1 = GetOneofCase(*message1, oneof_descriptor);
uint32 oneof_case2 = GetOneofCase(*message2, oneof_descriptor);
int32 temp_int32;
int64 temp_int64;
uint32 temp_uint32;
uint64 temp_uint64;
float temp_float;
double temp_double;
bool temp_bool;
int temp_int;
Message* temp_message = nullptr;
std::string temp_string;
// Stores message1's oneof field to a temp variable.
const FieldDescriptor* field1 = nullptr;
if (oneof_case1 > 0) {
field1 = descriptor_->FindFieldByNumber(oneof_case1);
// oneof_descriptor->field(oneof_case1);
switch (field1->cpp_type()) {
#define GET_TEMP_VALUE(CPPTYPE, TYPE) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
temp_##TYPE = GetField<TYPE>(*message1, field1); \
break;
GET_TEMP_VALUE(INT32, int32);
GET_TEMP_VALUE(INT64, int64);
GET_TEMP_VALUE(UINT32, uint32);
GET_TEMP_VALUE(UINT64, uint64);
GET_TEMP_VALUE(FLOAT, float);
GET_TEMP_VALUE(DOUBLE, double);
GET_TEMP_VALUE(BOOL, bool);
GET_TEMP_VALUE(ENUM, int);
#undef GET_TEMP_VALUE
case FieldDescriptor::CPPTYPE_MESSAGE:
temp_message = ReleaseMessage(message1, field1);
break;
case FieldDescriptor::CPPTYPE_STRING:
temp_string = GetString(*message1, field1);
break;
default:
GOOGLE_LOG(FATAL) << "Unimplemented type: " << field1->cpp_type();
}
}
// Sets message1's oneof field from the message2's oneof field.
if (oneof_case2 > 0) {
const FieldDescriptor* field2 = descriptor_->FindFieldByNumber(oneof_case2);
switch (field2->cpp_type()) {
#define SET_ONEOF_VALUE1(CPPTYPE, TYPE) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
SetField<TYPE>(message1, field2, GetField<TYPE>(*message2, field2)); \
break;
SET_ONEOF_VALUE1(INT32, int32);
SET_ONEOF_VALUE1(INT64, int64);
SET_ONEOF_VALUE1(UINT32, uint32);
SET_ONEOF_VALUE1(UINT64, uint64);
SET_ONEOF_VALUE1(FLOAT, float);
SET_ONEOF_VALUE1(DOUBLE, double);
SET_ONEOF_VALUE1(BOOL, bool);
SET_ONEOF_VALUE1(ENUM, int);
#undef SET_ONEOF_VALUE1
case FieldDescriptor::CPPTYPE_MESSAGE:
SetAllocatedMessage(message1, ReleaseMessage(message2, field2), field2);
break;
case FieldDescriptor::CPPTYPE_STRING:
SetString(message1, field2, GetString(*message2, field2));
break;
default:
GOOGLE_LOG(FATAL) << "Unimplemented type: " << field2->cpp_type();
}
} else {
ClearOneof(message1, oneof_descriptor);
}
// Sets message2's oneof field from the temp variable.
if (oneof_case1 > 0) {
switch (field1->cpp_type()) {
#define SET_ONEOF_VALUE2(CPPTYPE, TYPE) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
SetField<TYPE>(message2, field1, temp_##TYPE); \
break;
SET_ONEOF_VALUE2(INT32, int32);
SET_ONEOF_VALUE2(INT64, int64);
SET_ONEOF_VALUE2(UINT32, uint32);
SET_ONEOF_VALUE2(UINT64, uint64);
SET_ONEOF_VALUE2(FLOAT, float);
SET_ONEOF_VALUE2(DOUBLE, double);
SET_ONEOF_VALUE2(BOOL, bool);
SET_ONEOF_VALUE2(ENUM, int);
#undef SET_ONEOF_VALUE2
case FieldDescriptor::CPPTYPE_MESSAGE:
SetAllocatedMessage(message2, temp_message, field1);
break;
case FieldDescriptor::CPPTYPE_STRING:
SetString(message2, field1, temp_string);
break;
default:
GOOGLE_LOG(FATAL) << "Unimplemented type: " << field1->cpp_type();
}
} else {
ClearOneof(message2, oneof_descriptor);
}
}
void Reflection::Swap(Message* message1, Message* message2) const {
if (message1 == message2) return;
// TODO(kenton): Other Reflection methods should probably check this too.
GOOGLE_CHECK_EQ(message1->GetReflection(), this)
<< "First argument to Swap() (of type \""
<< message1->GetDescriptor()->full_name()
<< "\") is not compatible with this reflection object (which is for type "
"\""
<< descriptor_->full_name()
<< "\"). Note that the exact same class is required; not just the same "
"descriptor.";
GOOGLE_CHECK_EQ(message2->GetReflection(), this)
<< "Second argument to Swap() (of type \""
<< message2->GetDescriptor()->full_name()
<< "\") is not compatible with this reflection object (which is for type "
"\""
<< descriptor_->full_name()
<< "\"). Note that the exact same class is required; not just the same "
"descriptor.";
// Check that both messages are in the same arena (or both on the heap). We
// need to copy all data if not, due to ownership semantics.
if (GetArena(message1) != GetArena(message2)) {
// Slow copy path.
// Use our arena as temp space, if available.
Message* temp = message1->New(GetArena(message1));
temp->MergeFrom(*message2);
message2->CopyFrom(*message1);
Swap(message1, temp);
if (GetArena(message1) == nullptr) {
delete temp;
}
return;
}
if (schema_.HasHasbits()) {
uint32* has_bits1 = MutableHasBits(message1);
uint32* has_bits2 = MutableHasBits(message2);
int fields_with_has_bits = 0;
for (int i = 0; i < descriptor_->field_count(); i++) {
const FieldDescriptor* field = descriptor_->field(i);
if (field->is_repeated() || schema_.InRealOneof(field)) {
continue;
}
fields_with_has_bits++;
}
int has_bits_size = (fields_with_has_bits + 31) / 32;
for (int i = 0; i < has_bits_size; i++) {
std::swap(has_bits1[i], has_bits2[i]);
}
}
for (int i = 0; i <= last_non_weak_field_index_; i++) {
const FieldDescriptor* field = descriptor_->field(i);
if (schema_.InRealOneof(field)) continue;
if (schema_.IsFieldStripped(field)) continue;
SwapField(message1, message2, field);
}
const int oneof_decl_count = descriptor_->oneof_decl_count();
for (int i = 0; i < oneof_decl_count; i++) {
const OneofDescriptor* oneof = descriptor_->oneof_decl(i);
if (!oneof->is_synthetic()) {
SwapOneofField(message1, message2, oneof);
}
}
if (schema_.HasExtensionSet()) {
MutableExtensionSet(message1)->Swap(MutableExtensionSet(message2));
}
MutableUnknownFields(message1)->Swap(MutableUnknownFields(message2));
}
void Reflection::SwapFields(
Message* message1, Message* message2,
const std::vector<const FieldDescriptor*>& fields) const {
if (message1 == message2) return;
// TODO(kenton): Other Reflection methods should probably check this too.
GOOGLE_CHECK_EQ(message1->GetReflection(), this)
<< "First argument to SwapFields() (of type \""
<< message1->GetDescriptor()->full_name()
<< "\") is not compatible with this reflection object (which is for type "
"\""
<< descriptor_->full_name()
<< "\"). Note that the exact same class is required; not just the same "
"descriptor.";
GOOGLE_CHECK_EQ(message2->GetReflection(), this)
<< "Second argument to SwapFields() (of type \""
<< message2->GetDescriptor()->full_name()
<< "\") is not compatible with this reflection object (which is for type "
"\""
<< descriptor_->full_name()
<< "\"). Note that the exact same class is required; not just the same "
"descriptor.";
std::set<int> swapped_oneof;
const int fields_size = static_cast<int>(fields.size());
for (int i = 0; i < fields_size; i++) {
const FieldDescriptor* field = fields[i];
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
MutableExtensionSet(message1)->SwapExtension(
MutableExtensionSet(message2), field->number());
} else {
if (schema_.InRealOneof(field)) {
int oneof_index = field->containing_oneof()->index();
// Only swap the oneof field once.
if (swapped_oneof.find(oneof_index) != swapped_oneof.end()) {
continue;
}
swapped_oneof.insert(oneof_index);
SwapOneofField(message1, message2, field->containing_oneof());
} else {
// Swap has bit for non-repeated fields. We have already checked for
// oneof already.
if (!field->is_repeated()) {
SwapBit(message1, message2, field);
}
// Swap field.
SwapField(message1, message2, field);
}
}
}
}
// -------------------------------------------------------------------
bool Reflection::HasField(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(HasField);
USAGE_CHECK_SINGULAR(HasField);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
return GetExtensionSet(message).Has(field->number());
} else {
if (schema_.InRealOneof(field)) {
return HasOneofField(message, field);
} else {
return HasBit(message, field);
}
}
}
int Reflection::FieldSize(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(FieldSize);
USAGE_CHECK_REPEATED(FieldSize);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
return GetExtensionSet(message).ExtensionSize(field->number());
} else {
switch (field->cpp_type()) {
#define HANDLE_TYPE(UPPERCASE, LOWERCASE) \
case FieldDescriptor::CPPTYPE_##UPPERCASE: \
return GetRaw<RepeatedField<LOWERCASE> >(message, field).size()
HANDLE_TYPE(INT32, int32);
HANDLE_TYPE(INT64, int64);
HANDLE_TYPE(UINT32, uint32);
HANDLE_TYPE(UINT64, uint64);
HANDLE_TYPE(DOUBLE, double);
HANDLE_TYPE(FLOAT, float);
HANDLE_TYPE(BOOL, bool);
HANDLE_TYPE(ENUM, int);
#undef HANDLE_TYPE
case FieldDescriptor::CPPTYPE_STRING:
case FieldDescriptor::CPPTYPE_MESSAGE:
if (IsMapFieldInApi(field)) {
const internal::MapFieldBase& map =
GetRaw<MapFieldBase>(message, field);
if (map.IsRepeatedFieldValid()) {
return map.GetRepeatedField().size();
} else {
// No need to materialize the repeated field if it is out of sync:
// its size will be the same as the map's size.
return map.size();
}
} else {
return GetRaw<RepeatedPtrFieldBase>(message, field).size();
}
}
GOOGLE_LOG(FATAL) << "Can't get here.";
return 0;
}
}
void Reflection::ClearField(Message* message,
const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(ClearField);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
MutableExtensionSet(message)->ClearExtension(field->number());
} else if (!field->is_repeated()) {
if (schema_.InRealOneof(field)) {
ClearOneofField(message, field);
return;
}
if (HasBit(*message, field)) {
ClearBit(message, field);
// We need to set the field back to its default value.
switch (field->cpp_type()) {
#define CLEAR_TYPE(CPPTYPE, TYPE) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
*MutableRaw<TYPE>(message, field) = field->default_value_##TYPE(); \
break;
CLEAR_TYPE(INT32, int32);
CLEAR_TYPE(INT64, int64);
CLEAR_TYPE(UINT32, uint32);
CLEAR_TYPE(UINT64, uint64);
CLEAR_TYPE(FLOAT, float);
CLEAR_TYPE(DOUBLE, double);
CLEAR_TYPE(BOOL, bool);
#undef CLEAR_TYPE
case FieldDescriptor::CPPTYPE_ENUM:
*MutableRaw<int>(message, field) =
field->default_value_enum()->number();
break;
case FieldDescriptor::CPPTYPE_STRING: {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
if (IsInlined(field)) {
const std::string* default_ptr =
&DefaultRaw<InlinedStringField>(field).GetNoArena();
MutableRaw<InlinedStringField>(message, field)
->SetNoArena(default_ptr, *default_ptr);
break;
}
const std::string* default_ptr =
&DefaultRaw<ArenaStringPtr>(field).Get();
MutableRaw<ArenaStringPtr>(message, field)
->SetAllocated(default_ptr, nullptr, GetArena(message));
break;
}
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE:
if (!schema_.HasHasbits()) {
// Proto3 does not have has-bits and we need to set a message field
// to nullptr in order to indicate its un-presence.
if (GetArena(message) == nullptr) {
delete *MutableRaw<Message*>(message, field);
}
*MutableRaw<Message*>(message, field) = nullptr;
} else {
(*MutableRaw<Message*>(message, field))->Clear();
}
break;
}
}
} else {
switch (field->cpp_type()) {
#define HANDLE_TYPE(UPPERCASE, LOWERCASE) \
case FieldDescriptor::CPPTYPE_##UPPERCASE: \
MutableRaw<RepeatedField<LOWERCASE> >(message, field)->Clear(); \
break
HANDLE_TYPE(INT32, int32);
HANDLE_TYPE(INT64, int64);
HANDLE_TYPE(UINT32, uint32);
HANDLE_TYPE(UINT64, uint64);
HANDLE_TYPE(DOUBLE, double);
HANDLE_TYPE(FLOAT, float);
HANDLE_TYPE(BOOL, bool);
HANDLE_TYPE(ENUM, int);
#undef HANDLE_TYPE
case FieldDescriptor::CPPTYPE_STRING: {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
MutableRaw<RepeatedPtrField<std::string> >(message, field)->Clear();
break;
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE: {
if (IsMapFieldInApi(field)) {
MutableRaw<MapFieldBase>(message, field)->Clear();
} else {
// We don't know which subclass of RepeatedPtrFieldBase the type is,
// so we use RepeatedPtrFieldBase directly.
MutableRaw<RepeatedPtrFieldBase>(message, field)
->Clear<GenericTypeHandler<Message> >();
}
break;
}
}
}
}
void Reflection::RemoveLast(Message* message,
const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(RemoveLast);
USAGE_CHECK_REPEATED(RemoveLast);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
MutableExtensionSet(message)->RemoveLast(field->number());
} else {
switch (field->cpp_type()) {
#define HANDLE_TYPE(UPPERCASE, LOWERCASE) \
case FieldDescriptor::CPPTYPE_##UPPERCASE: \
MutableRaw<RepeatedField<LOWERCASE> >(message, field)->RemoveLast(); \
break
HANDLE_TYPE(INT32, int32);
HANDLE_TYPE(INT64, int64);
HANDLE_TYPE(UINT32, uint32);
HANDLE_TYPE(UINT64, uint64);
HANDLE_TYPE(DOUBLE, double);
HANDLE_TYPE(FLOAT, float);
HANDLE_TYPE(BOOL, bool);
HANDLE_TYPE(ENUM, int);
#undef HANDLE_TYPE
case FieldDescriptor::CPPTYPE_STRING:
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
MutableRaw<RepeatedPtrField<std::string> >(message, field)
->RemoveLast();
break;
}
break;
case FieldDescriptor::CPPTYPE_MESSAGE:
if (IsMapFieldInApi(field)) {
MutableRaw<MapFieldBase>(message, field)
->MutableRepeatedField()
->RemoveLast<GenericTypeHandler<Message> >();
} else {
MutableRaw<RepeatedPtrFieldBase>(message, field)
->RemoveLast<GenericTypeHandler<Message> >();
}
break;
}
}
}
Message* Reflection::ReleaseLast(Message* message,
const FieldDescriptor* field) const {
USAGE_CHECK_ALL(ReleaseLast, REPEATED, MESSAGE);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->ReleaseLast(field->number()));
} else {
if (IsMapFieldInApi(field)) {
return MutableRaw<MapFieldBase>(message, field)
->MutableRepeatedField()
->ReleaseLast<GenericTypeHandler<Message> >();
} else {
return MutableRaw<RepeatedPtrFieldBase>(message, field)
->ReleaseLast<GenericTypeHandler<Message> >();
}
}
}
void Reflection::SwapElements(Message* message, const FieldDescriptor* field,
int index1, int index2) const {
USAGE_CHECK_MESSAGE_TYPE(Swap);
USAGE_CHECK_REPEATED(Swap);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
MutableExtensionSet(message)->SwapElements(field->number(), index1, index2);
} else {
switch (field->cpp_type()) {
#define HANDLE_TYPE(UPPERCASE, LOWERCASE) \
case FieldDescriptor::CPPTYPE_##UPPERCASE: \
MutableRaw<RepeatedField<LOWERCASE> >(message, field) \
->SwapElements(index1, index2); \
break
HANDLE_TYPE(INT32, int32);
HANDLE_TYPE(INT64, int64);
HANDLE_TYPE(UINT32, uint32);
HANDLE_TYPE(UINT64, uint64);
HANDLE_TYPE(DOUBLE, double);
HANDLE_TYPE(FLOAT, float);
HANDLE_TYPE(BOOL, bool);
HANDLE_TYPE(ENUM, int);
#undef HANDLE_TYPE
case FieldDescriptor::CPPTYPE_STRING:
case FieldDescriptor::CPPTYPE_MESSAGE:
if (IsMapFieldInApi(field)) {
MutableRaw<MapFieldBase>(message, field)
->MutableRepeatedField()
->SwapElements(index1, index2);
} else {
MutableRaw<RepeatedPtrFieldBase>(message, field)
->SwapElements(index1, index2);
}
break;
}
}
}
namespace {
// Comparison functor for sorting FieldDescriptors by field number.
struct FieldNumberSorter {
bool operator()(const FieldDescriptor* left,
const FieldDescriptor* right) const {
return left->number() < right->number();
}
};
bool IsIndexInHasBitSet(const uint32* has_bit_set, uint32 has_bit_index) {
GOOGLE_DCHECK_NE(has_bit_index, ~0u);
return ((has_bit_set[has_bit_index / 32] >> (has_bit_index % 32)) &
static_cast<uint32>(1)) != 0;
}
bool CreateUnknownEnumValues(const FileDescriptor* file) {
return file->syntax() == FileDescriptor::SYNTAX_PROTO3;
}
} // namespace
namespace internal {
bool CreateUnknownEnumValues(const FieldDescriptor* field) {
bool open_enum = false;
return field->file()->syntax() == FileDescriptor::SYNTAX_PROTO3 || open_enum;
}
} // namespace internal
using internal::CreateUnknownEnumValues;
void Reflection::ListFieldsMayFailOnStripped(
const Message& message, bool should_fail,
std::vector<const FieldDescriptor*>* output) const {
output->clear();
// Optimization: The default instance never has any fields set.
if (schema_.IsDefaultInstance(message)) return;
// Optimization: Avoid calling GetHasBits() and HasOneofField() many times
// within the field loop. We allow this violation of ReflectionSchema
// encapsulation because this function takes a noticeable about of CPU
// fleetwide and properly allowing this optimization through public interfaces
// seems more trouble than it is worth.
const uint32* const has_bits =
schema_.HasHasbits() ? GetHasBits(message) : nullptr;
const uint32* const has_bits_indices = schema_.has_bit_indices_;
output->reserve(descriptor_->field_count());
for (int i = 0; i <= last_non_weak_field_index_; i++) {
const FieldDescriptor* field = descriptor_->field(i);
if (!should_fail && schema_.IsFieldStripped(field)) {
continue;
}
if (field->is_repeated()) {
if (FieldSize(message, field) > 0) {
output->push_back(field);
}
} else {
const OneofDescriptor* containing_oneof = field->containing_oneof();
if (schema_.InRealOneof(field)) {
const uint32* const oneof_case_array = GetConstPointerAtOffset<uint32>(
&message, schema_.oneof_case_offset_);
// Equivalent to: HasOneofField(message, field)
if (oneof_case_array[containing_oneof->index()] == field->number()) {
output->push_back(field);
}
} else if (has_bits && has_bits_indices[i] != -1) {
// Equivalent to: HasBit(message, field)
if (IsIndexInHasBitSet(has_bits, has_bits_indices[i])) {
output->push_back(field);
}
} else if (HasBit(message, field)) { // Fall back on proto3-style HasBit.
output->push_back(field);
}
}
}
if (schema_.HasExtensionSet()) {
GetExtensionSet(message).AppendToList(descriptor_, descriptor_pool_,
output);
}
// ListFields() must sort output by field number.
std::sort(output->begin(), output->end(), FieldNumberSorter());
}
void Reflection::ListFields(const Message& message,
std::vector<const FieldDescriptor*>* output) const {
ListFieldsMayFailOnStripped(message, true, output);
}
void Reflection::ListFieldsOmitStripped(
const Message& message, std::vector<const FieldDescriptor*>* output) const {
ListFieldsMayFailOnStripped(message, false, output);
}
// -------------------------------------------------------------------
#undef DEFINE_PRIMITIVE_ACCESSORS
#define DEFINE_PRIMITIVE_ACCESSORS(TYPENAME, TYPE, PASSTYPE, CPPTYPE) \
PASSTYPE Reflection::Get##TYPENAME(const Message& message, \
const FieldDescriptor* field) const { \
USAGE_CHECK_ALL(Get##TYPENAME, SINGULAR, CPPTYPE); \
if (field->is_extension()) { \
return GetExtensionSet(message).Get##TYPENAME( \
field->number(), field->default_value_##PASSTYPE()); \
} else { \
return GetField<TYPE>(message, field); \
} \
} \
\
void Reflection::Set##TYPENAME( \
Message* message, const FieldDescriptor* field, PASSTYPE value) const { \
USAGE_CHECK_ALL(Set##TYPENAME, SINGULAR, CPPTYPE); \
if (field->is_extension()) { \
return MutableExtensionSet(message)->Set##TYPENAME( \
field->number(), field->type(), value, field); \
} else { \
SetField<TYPE>(message, field, value); \
} \
} \
\
PASSTYPE Reflection::GetRepeated##TYPENAME( \
const Message& message, const FieldDescriptor* field, int index) const { \
USAGE_CHECK_ALL(GetRepeated##TYPENAME, REPEATED, CPPTYPE); \
if (field->is_extension()) { \
return GetExtensionSet(message).GetRepeated##TYPENAME(field->number(), \
index); \
} else { \
return GetRepeatedField<TYPE>(message, field, index); \
} \
} \
\
void Reflection::SetRepeated##TYPENAME(Message* message, \
const FieldDescriptor* field, \
int index, PASSTYPE value) const { \
USAGE_CHECK_ALL(SetRepeated##TYPENAME, REPEATED, CPPTYPE); \
if (field->is_extension()) { \
MutableExtensionSet(message)->SetRepeated##TYPENAME(field->number(), \
index, value); \
} else { \
SetRepeatedField<TYPE>(message, field, index, value); \
} \
} \
\
void Reflection::Add##TYPENAME( \
Message* message, const FieldDescriptor* field, PASSTYPE value) const { \
USAGE_CHECK_ALL(Add##TYPENAME, REPEATED, CPPTYPE); \
if (field->is_extension()) { \
MutableExtensionSet(message)->Add##TYPENAME( \
field->number(), field->type(), field->options().packed(), value, \
field); \
} else { \
AddField<TYPE>(message, field, value); \
} \
}
DEFINE_PRIMITIVE_ACCESSORS(Int32, int32, int32, INT32)
DEFINE_PRIMITIVE_ACCESSORS(Int64, int64, int64, INT64)
DEFINE_PRIMITIVE_ACCESSORS(UInt32, uint32, uint32, UINT32)
DEFINE_PRIMITIVE_ACCESSORS(UInt64, uint64, uint64, UINT64)
DEFINE_PRIMITIVE_ACCESSORS(Float, float, float, FLOAT)
DEFINE_PRIMITIVE_ACCESSORS(Double, double, double, DOUBLE)
DEFINE_PRIMITIVE_ACCESSORS(Bool, bool, bool, BOOL)
#undef DEFINE_PRIMITIVE_ACCESSORS
// -------------------------------------------------------------------
std::string Reflection::GetString(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK_ALL(GetString, SINGULAR, STRING);
if (field->is_extension()) {
return GetExtensionSet(message).GetString(field->number(),
field->default_value_string());
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
if (IsInlined(field)) {
return GetField<InlinedStringField>(message, field).GetNoArena();
}
return GetField<ArenaStringPtr>(message, field).Get();
}
}
}
}
const std::string& Reflection::GetStringReference(const Message& message,
const FieldDescriptor* field,
std::string* scratch) const {
USAGE_CHECK_ALL(GetStringReference, SINGULAR, STRING);
if (field->is_extension()) {
return GetExtensionSet(message).GetString(field->number(),
field->default_value_string());
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
if (IsInlined(field)) {
return GetField<InlinedStringField>(message, field).GetNoArena();
}
return GetField<ArenaStringPtr>(message, field).Get();
}
}
}
}
void Reflection::SetString(Message* message, const FieldDescriptor* field,
std::string value) const {
USAGE_CHECK_ALL(SetString, SINGULAR, STRING);
if (field->is_extension()) {
return MutableExtensionSet(message)->SetString(
field->number(), field->type(), std::move(value), field);
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
if (IsInlined(field)) {
MutableField<InlinedStringField>(message, field)
->SetNoArena(nullptr, std::move(value));
break;
}
const std::string* default_ptr =
&DefaultRaw<ArenaStringPtr>(field).Get();
if (schema_.InRealOneof(field) && !HasOneofField(*message, field)) {
ClearOneof(message, field->containing_oneof());
MutableField<ArenaStringPtr>(message, field)
->UnsafeSetDefault(default_ptr);
}
MutableField<ArenaStringPtr>(message, field)
->Mutable(default_ptr, GetArena(message))
->assign(std::move(value));
break;
}
}
}
}
std::string Reflection::GetRepeatedString(const Message& message,
const FieldDescriptor* field,
int index) const {
USAGE_CHECK_ALL(GetRepeatedString, REPEATED, STRING);
if (field->is_extension()) {
return GetExtensionSet(message).GetRepeatedString(field->number(), index);
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
return GetRepeatedPtrField<std::string>(message, field, index);
}
}
}
const std::string& Reflection::GetRepeatedStringReference(
const Message& message, const FieldDescriptor* field, int index,
std::string* scratch) const {
USAGE_CHECK_ALL(GetRepeatedStringReference, REPEATED, STRING);
if (field->is_extension()) {
return GetExtensionSet(message).GetRepeatedString(field->number(), index);
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
return GetRepeatedPtrField<std::string>(message, field, index);
}
}
}
void Reflection::SetRepeatedString(Message* message,
const FieldDescriptor* field, int index,
std::string value) const {
USAGE_CHECK_ALL(SetRepeatedString, REPEATED, STRING);
if (field->is_extension()) {
MutableExtensionSet(message)->SetRepeatedString(field->number(), index,
std::move(value));
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
MutableRepeatedField<std::string>(message, field, index)
->assign(std::move(value));
break;
}
}
}
void Reflection::AddString(Message* message, const FieldDescriptor* field,
std::string value) const {
USAGE_CHECK_ALL(AddString, REPEATED, STRING);
if (field->is_extension()) {
MutableExtensionSet(message)->AddString(field->number(), field->type(),
std::move(value), field);
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
AddField<std::string>(message, field)->assign(std::move(value));
break;
}
}
}
// -------------------------------------------------------------------
const EnumValueDescriptor* Reflection::GetEnum(
const Message& message, const FieldDescriptor* field) const {
// Usage checked by GetEnumValue.
int value = GetEnumValue(message, field);
return field->enum_type()->FindValueByNumberCreatingIfUnknown(value);
}
int Reflection::GetEnumValue(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK_ALL(GetEnumValue, SINGULAR, ENUM);
int32 value;
if (field->is_extension()) {
value = GetExtensionSet(message).GetEnum(
field->number(), field->default_value_enum()->number());
} else {
value = GetField<int>(message, field);
}
return value;
}
void Reflection::SetEnum(Message* message, const FieldDescriptor* field,
const EnumValueDescriptor* value) const {
// Usage checked by SetEnumValue.
USAGE_CHECK_ENUM_VALUE(SetEnum);
SetEnumValueInternal(message, field, value->number());
}
void Reflection::SetEnumValue(Message* message, const FieldDescriptor* field,
int value) const {
USAGE_CHECK_ALL(SetEnumValue, SINGULAR, ENUM);
if (!CreateUnknownEnumValues(field)) {
// Check that the value is valid if we don't support direct storage of
// unknown enum values.
const EnumValueDescriptor* value_desc =
field->enum_type()->FindValueByNumber(value);
if (value_desc == nullptr) {
MutableUnknownFields(message)->AddVarint(field->number(), value);
return;
}
}
SetEnumValueInternal(message, field, value);
}
void Reflection::SetEnumValueInternal(Message* message,
const FieldDescriptor* field,
int value) const {
if (field->is_extension()) {
MutableExtensionSet(message)->SetEnum(field->number(), field->type(), value,
field);
} else {
SetField<int>(message, field, value);
}
}
const EnumValueDescriptor* Reflection::GetRepeatedEnum(
const Message& message, const FieldDescriptor* field, int index) const {
// Usage checked by GetRepeatedEnumValue.
int value = GetRepeatedEnumValue(message, field, index);
return field->enum_type()->FindValueByNumberCreatingIfUnknown(value);
}
int Reflection::GetRepeatedEnumValue(const Message& message,
const FieldDescriptor* field,
int index) const {
USAGE_CHECK_ALL(GetRepeatedEnumValue, REPEATED, ENUM);
int value;
if (field->is_extension()) {
value = GetExtensionSet(message).GetRepeatedEnum(field->number(), index);
} else {
value = GetRepeatedField<int>(message, field, index);
}
return value;
}
void Reflection::SetRepeatedEnum(Message* message, const FieldDescriptor* field,
int index,
const EnumValueDescriptor* value) const {
// Usage checked by SetRepeatedEnumValue.
USAGE_CHECK_ENUM_VALUE(SetRepeatedEnum);
SetRepeatedEnumValueInternal(message, field, index, value->number());
}
void Reflection::SetRepeatedEnumValue(Message* message,
const FieldDescriptor* field, int index,
int value) const {
USAGE_CHECK_ALL(SetRepeatedEnum, REPEATED, ENUM);
if (!CreateUnknownEnumValues(field)) {
// Check that the value is valid if we don't support direct storage of
// unknown enum values.
const EnumValueDescriptor* value_desc =
field->enum_type()->FindValueByNumber(value);
if (value_desc == nullptr) {
MutableUnknownFields(message)->AddVarint(field->number(), value);
return;
}
}
SetRepeatedEnumValueInternal(message, field, index, value);
}
void Reflection::SetRepeatedEnumValueInternal(Message* message,
const FieldDescriptor* field,
int index, int value) const {
if (field->is_extension()) {
MutableExtensionSet(message)->SetRepeatedEnum(field->number(), index,
value);
} else {
SetRepeatedField<int>(message, field, index, value);
}
}
void Reflection::AddEnum(Message* message, const FieldDescriptor* field,
const EnumValueDescriptor* value) const {
// Usage checked by AddEnumValue.
USAGE_CHECK_ENUM_VALUE(AddEnum);
AddEnumValueInternal(message, field, value->number());
}
void Reflection::AddEnumValue(Message* message, const FieldDescriptor* field,
int value) const {
USAGE_CHECK_ALL(AddEnum, REPEATED, ENUM);
if (!CreateUnknownEnumValues(field)) {
// Check that the value is valid if we don't support direct storage of
// unknown enum values.
const EnumValueDescriptor* value_desc =
field->enum_type()->FindValueByNumber(value);
if (value_desc == nullptr) {
MutableUnknownFields(message)->AddVarint(field->number(), value);
return;
}
}
AddEnumValueInternal(message, field, value);
}
void Reflection::AddEnumValueInternal(Message* message,
const FieldDescriptor* field,
int value) const {
if (field->is_extension()) {
MutableExtensionSet(message)->AddEnum(field->number(), field->type(),
field->options().packed(), value,
field);
} else {
AddField<int>(message, field, value);
}
}
// -------------------------------------------------------------------
const Message& Reflection::GetMessage(const Message& message,
const FieldDescriptor* field,
MessageFactory* factory) const {
USAGE_CHECK_ALL(GetMessage, SINGULAR, MESSAGE);
CheckInvalidAccess(schema_, field);
if (factory == nullptr) factory = message_factory_;
if (field->is_extension()) {
return static_cast<const Message&>(GetExtensionSet(message).GetMessage(
field->number(), field->message_type(), factory));
} else {
const Message* result = GetRaw<const Message*>(message, field);
if (result == nullptr) {
result = DefaultRaw<const Message*>(field);
}
return *result;
}
}
Message* Reflection::MutableMessage(Message* message,
const FieldDescriptor* field,
MessageFactory* factory) const {
USAGE_CHECK_ALL(MutableMessage, SINGULAR, MESSAGE);
CheckInvalidAccess(schema_, field);
if (factory == nullptr) factory = message_factory_;
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->MutableMessage(field, factory));
} else {
Message* result;
Message** result_holder = MutableRaw<Message*>(message, field);
if (schema_.InRealOneof(field)) {
if (!HasOneofField(*message, field)) {
ClearOneof(message, field->containing_oneof());
result_holder = MutableField<Message*>(message, field);
const Message* default_message = DefaultRaw<const Message*>(field);
*result_holder = default_message->New(message->GetArena());
}
} else {
SetBit(message, field);
}
if (*result_holder == nullptr) {
const Message* default_message = DefaultRaw<const Message*>(field);
*result_holder = default_message->New(message->GetArena());
}
result = *result_holder;
return result;
}
}
void Reflection::UnsafeArenaSetAllocatedMessage(
Message* message, Message* sub_message,
const FieldDescriptor* field) const {
USAGE_CHECK_ALL(SetAllocatedMessage, SINGULAR, MESSAGE);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
MutableExtensionSet(message)->UnsafeArenaSetAllocatedMessage(
field->number(), field->type(), field, sub_message);
} else {
if (schema_.InRealOneof(field)) {
if (sub_message == nullptr) {
ClearOneof(message, field->containing_oneof());
return;
}
ClearOneof(message, field->containing_oneof());
*MutableRaw<Message*>(message, field) = sub_message;
SetOneofCase(message, field);
return;
}
if (sub_message == nullptr) {
ClearBit(message, field);
} else {
SetBit(message, field);
}
Message** sub_message_holder = MutableRaw<Message*>(message, field);
if (GetArena(message) == nullptr) {
delete *sub_message_holder;
}
*sub_message_holder = sub_message;
}
}
void Reflection::SetAllocatedMessage(Message* message, Message* sub_message,
const FieldDescriptor* field) const {
CheckInvalidAccess(schema_, field);
// If message and sub-message are in different memory ownership domains
// (different arenas, or one is on heap and one is not), then we may need to
// do a copy.
if (sub_message != nullptr &&
sub_message->GetArena() != message->GetArena()) {
if (sub_message->GetArena() == nullptr && message->GetArena() != nullptr) {
// Case 1: parent is on an arena and child is heap-allocated. We can add
// the child to the arena's Own() list to free on arena destruction, then
// set our pointer.
message->GetArena()->Own(sub_message);
UnsafeArenaSetAllocatedMessage(message, sub_message, field);
} else {
// Case 2: all other cases. We need to make a copy. MutableMessage() will
// either get the existing message object, or instantiate a new one as
// appropriate w.r.t. our arena.
Message* sub_message_copy = MutableMessage(message, field);
sub_message_copy->CopyFrom(*sub_message);
}
} else {
// Same memory ownership domains.
UnsafeArenaSetAllocatedMessage(message, sub_message, field);
}
}
Message* Reflection::UnsafeArenaReleaseMessage(Message* message,
const FieldDescriptor* field,
MessageFactory* factory) const {
USAGE_CHECK_ALL(ReleaseMessage, SINGULAR, MESSAGE);
CheckInvalidAccess(schema_, field);
if (factory == nullptr) factory = message_factory_;
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->UnsafeArenaReleaseMessage(field,
factory));
} else {
if (!(field->is_repeated() || schema_.InRealOneof(field))) {
ClearBit(message, field);
}
if (schema_.InRealOneof(field)) {
if (HasOneofField(*message, field)) {
*MutableOneofCase(message, field->containing_oneof()) = 0;
} else {
return nullptr;
}
}
Message** result = MutableRaw<Message*>(message, field);
Message* ret = *result;
*result = nullptr;
return ret;
}
}
Message* Reflection::ReleaseMessage(Message* message,
const FieldDescriptor* field,
MessageFactory* factory) const {
CheckInvalidAccess(schema_, field);
Message* released = UnsafeArenaReleaseMessage(message, field, factory);
if (GetArena(message) != nullptr && released != nullptr) {
Message* copy_from_arena = released->New();
copy_from_arena->CopyFrom(*released);
released = copy_from_arena;
}
return released;
}
const Message& Reflection::GetRepeatedMessage(const Message& message,
const FieldDescriptor* field,
int index) const {
USAGE_CHECK_ALL(GetRepeatedMessage, REPEATED, MESSAGE);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
return static_cast<const Message&>(
GetExtensionSet(message).GetRepeatedMessage(field->number(), index));
} else {
if (IsMapFieldInApi(field)) {
return GetRaw<MapFieldBase>(message, field)
.GetRepeatedField()
.Get<GenericTypeHandler<Message> >(index);
} else {
return GetRaw<RepeatedPtrFieldBase>(message, field)
.Get<GenericTypeHandler<Message> >(index);
}
}
}
Message* Reflection::MutableRepeatedMessage(Message* message,
const FieldDescriptor* field,
int index) const {
USAGE_CHECK_ALL(MutableRepeatedMessage, REPEATED, MESSAGE);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->MutableRepeatedMessage(field->number(),
index));
} else {
if (IsMapFieldInApi(field)) {
return MutableRaw<MapFieldBase>(message, field)
->MutableRepeatedField()
->Mutable<GenericTypeHandler<Message> >(index);
} else {
return MutableRaw<RepeatedPtrFieldBase>(message, field)
->Mutable<GenericTypeHandler<Message> >(index);
}
}
}
Message* Reflection::AddMessage(Message* message, const FieldDescriptor* field,
MessageFactory* factory) const {
USAGE_CHECK_ALL(AddMessage, REPEATED, MESSAGE);
CheckInvalidAccess(schema_, field);
if (factory == nullptr) factory = message_factory_;
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->AddMessage(field, factory));
} else {
Message* result = nullptr;
// We can't use AddField<Message>() because RepeatedPtrFieldBase doesn't
// know how to allocate one.
RepeatedPtrFieldBase* repeated = nullptr;
if (IsMapFieldInApi(field)) {
repeated =
MutableRaw<MapFieldBase>(message, field)->MutableRepeatedField();
} else {
repeated = MutableRaw<RepeatedPtrFieldBase>(message, field);
}
result = repeated->AddFromCleared<GenericTypeHandler<Message> >();
if (result == nullptr) {
// We must allocate a new object.
const Message* prototype;
if (repeated->size() == 0) {
prototype = factory->GetPrototype(field->message_type());
} else {
prototype = &repeated->Get<GenericTypeHandler<Message> >(0);
}
result = prototype->New(message->GetArena());
// We can guarantee here that repeated and result are either both heap
// allocated or arena owned. So it is safe to call the unsafe version
// of AddAllocated.
repeated->UnsafeArenaAddAllocated<GenericTypeHandler<Message> >(result);
}
return result;
}
}
void Reflection::AddAllocatedMessage(Message* message,
const FieldDescriptor* field,
Message* new_entry) const {
USAGE_CHECK_ALL(AddAllocatedMessage, REPEATED, MESSAGE);
CheckInvalidAccess(schema_, field);
if (field->is_extension()) {
MutableExtensionSet(message)->AddAllocatedMessage(field, new_entry);
} else {
RepeatedPtrFieldBase* repeated = nullptr;
if (IsMapFieldInApi(field)) {
repeated =
MutableRaw<MapFieldBase>(message, field)->MutableRepeatedField();
} else {
repeated = MutableRaw<RepeatedPtrFieldBase>(message, field);
}
repeated->AddAllocated<GenericTypeHandler<Message> >(new_entry);
}
}
void* Reflection::MutableRawRepeatedField(Message* message,
const FieldDescriptor* field,
FieldDescriptor::CppType cpptype,
int ctype,
const Descriptor* desc) const {
USAGE_CHECK_REPEATED("MutableRawRepeatedField");
CheckInvalidAccess(schema_, field);
if (field->cpp_type() != cpptype &&
(field->cpp_type() != FieldDescriptor::CPPTYPE_ENUM ||
cpptype != FieldDescriptor::CPPTYPE_INT32))
ReportReflectionUsageTypeError(descriptor_, field,
"MutableRawRepeatedField", cpptype);
if (desc != nullptr)
GOOGLE_CHECK_EQ(field->message_type(), desc) << "wrong submessage type";
if (field->is_extension()) {
return MutableExtensionSet(message)->MutableRawRepeatedField(
field->number(), field->type(), field->is_packed(), field);
} else {
// Trigger transform for MapField
if (IsMapFieldInApi(field)) {
return MutableRawNonOneof<MapFieldBase>(message, field)
->MutableRepeatedField();
}
return MutableRawNonOneof<void>(message, field);
}
}
const void* Reflection::GetRawRepeatedField(const Message& message,
const FieldDescriptor* field,
FieldDescriptor::CppType cpptype,
int ctype,
const Descriptor* desc) const {
USAGE_CHECK_REPEATED("GetRawRepeatedField");
if (field->cpp_type() != cpptype)
ReportReflectionUsageTypeError(descriptor_, field, "GetRawRepeatedField",
cpptype);
if (ctype >= 0)
GOOGLE_CHECK_EQ(field->options().ctype(), ctype) << "subtype mismatch";
if (desc != nullptr)
GOOGLE_CHECK_EQ(field->message_type(), desc) << "wrong submessage type";
if (field->is_extension()) {
// Should use extension_set::GetRawRepeatedField. However, the required
// parameter "default repeated value" is not very easy to get here.
// Map is not supported in extensions, it is acceptable to use
// extension_set::MutableRawRepeatedField which does not change the message.
return MutableExtensionSet(const_cast<Message*>(&message))
->MutableRawRepeatedField(field->number(), field->type(),
field->is_packed(), field);
} else {
// Trigger transform for MapField
if (IsMapFieldInApi(field)) {
return &(GetRawNonOneof<MapFieldBase>(message, field).GetRepeatedField());
}
return &GetRawNonOneof<char>(message, field);
}
}
const FieldDescriptor* Reflection::GetOneofFieldDescriptor(
const Message& message, const OneofDescriptor* oneof_descriptor) const {
if (oneof_descriptor->is_synthetic()) {
const FieldDescriptor* field = oneof_descriptor->field(0);
return HasField(message, field) ? field : nullptr;
}
uint32 field_number = GetOneofCase(message, oneof_descriptor);
if (field_number == 0) {
return nullptr;
}
return descriptor_->FindFieldByNumber(field_number);
}
bool Reflection::ContainsMapKey(const Message& message,
const FieldDescriptor* field,
const MapKey& key) const {
USAGE_CHECK(IsMapFieldInApi(field), "LookupMapValue",
"Field is not a map field.");
return GetRaw<MapFieldBase>(message, field).ContainsMapKey(key);
}
bool Reflection::InsertOrLookupMapValue(Message* message,
const FieldDescriptor* field,
const MapKey& key,
MapValueRef* val) const {
USAGE_CHECK(IsMapFieldInApi(field), "InsertOrLookupMapValue",
"Field is not a map field.");
val->SetType(field->message_type()->FindFieldByName("value")->cpp_type());
return MutableRaw<MapFieldBase>(message, field)
->InsertOrLookupMapValue(key, val);
}
bool Reflection::DeleteMapValue(Message* message, const FieldDescriptor* field,
const MapKey& key) const {
USAGE_CHECK(IsMapFieldInApi(field), "DeleteMapValue",
"Field is not a map field.");
return MutableRaw<MapFieldBase>(message, field)->DeleteMapValue(key);
}
MapIterator Reflection::MapBegin(Message* message,
const FieldDescriptor* field) const {
USAGE_CHECK(IsMapFieldInApi(field), "MapBegin", "Field is not a map field.");
MapIterator iter(message, field);
GetRaw<MapFieldBase>(*message, field).MapBegin(&iter);
return iter;
}
MapIterator Reflection::MapEnd(Message* message,
const FieldDescriptor* field) const {
USAGE_CHECK(IsMapFieldInApi(field), "MapEnd", "Field is not a map field.");
MapIterator iter(message, field);
GetRaw<MapFieldBase>(*message, field).MapEnd(&iter);
return iter;
}
int Reflection::MapSize(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK(IsMapFieldInApi(field), "MapSize", "Field is not a map field.");
return GetRaw<MapFieldBase>(message, field).size();
}
// -----------------------------------------------------------------------------
const FieldDescriptor* Reflection::FindKnownExtensionByName(
const std::string& name) const {
if (!schema_.HasExtensionSet()) return nullptr;
return descriptor_pool_->FindExtensionByPrintableName(descriptor_, name);
}
const FieldDescriptor* Reflection::FindKnownExtensionByNumber(
int number) const {
if (!schema_.HasExtensionSet()) return nullptr;
return descriptor_pool_->FindExtensionByNumber(descriptor_, number);
}
bool Reflection::SupportsUnknownEnumValues() const {
return CreateUnknownEnumValues(descriptor_->file());
}
// ===================================================================
// Some private helpers.
// These simple template accessors obtain pointers (or references) to
// the given field.
template <class Type>
const Type& Reflection::GetRawNonOneof(const Message& message,
const FieldDescriptor* field) const {
return GetConstRefAtOffset<Type>(message,
schema_.GetFieldOffsetNonOneof(field));
}
template <class Type>
Type* Reflection::MutableRawNonOneof(Message* message,
const FieldDescriptor* field) const {
return GetPointerAtOffset<Type>(message,
schema_.GetFieldOffsetNonOneof(field));
}
template <typename Type>
const Type& Reflection::GetRaw(const Message& message,
const FieldDescriptor* field) const {
if (schema_.InRealOneof(field) && !HasOneofField(message, field)) {
return DefaultRaw<Type>(field);
}
return GetConstRefAtOffset<Type>(message, schema_.GetFieldOffset(field));
}
bool Reflection::IsInlined(const FieldDescriptor* field) const {
return schema_.IsFieldInlined(field);
}
template <typename Type>
Type* Reflection::MutableRaw(Message* message,
const FieldDescriptor* field) const {
return GetPointerAtOffset<Type>(message, schema_.GetFieldOffset(field));
}
const uint32* Reflection::GetHasBits(const Message& message) const {
GOOGLE_DCHECK(schema_.HasHasbits());
return &GetConstRefAtOffset<uint32>(message, schema_.HasBitsOffset());
}
uint32* Reflection::MutableHasBits(Message* message) const {
GOOGLE_DCHECK(schema_.HasHasbits());
return GetPointerAtOffset<uint32>(message, schema_.HasBitsOffset());
}
uint32 Reflection::GetOneofCase(const Message& message,
const OneofDescriptor* oneof_descriptor) const {
GOOGLE_DCHECK(!oneof_descriptor->is_synthetic());
return GetConstRefAtOffset<uint32>(
message, schema_.GetOneofCaseOffset(oneof_descriptor));
}
uint32* Reflection::MutableOneofCase(
Message* message, const OneofDescriptor* oneof_descriptor) const {
GOOGLE_DCHECK(!oneof_descriptor->is_synthetic());
return GetPointerAtOffset<uint32>(
message, schema_.GetOneofCaseOffset(oneof_descriptor));
}
const ExtensionSet& Reflection::GetExtensionSet(const Message& message) const {
return GetConstRefAtOffset<ExtensionSet>(message,
schema_.GetExtensionSetOffset());
}
ExtensionSet* Reflection::MutableExtensionSet(Message* message) const {
return GetPointerAtOffset<ExtensionSet>(message,
schema_.GetExtensionSetOffset());
}
Arena* Reflection::GetArena(Message* message) const {
return GetInternalMetadata(*message).arena();
}
const InternalMetadata& Reflection::GetInternalMetadata(
const Message& message) const {
return GetConstRefAtOffset<InternalMetadata>(message,
schema_.GetMetadataOffset());
}
InternalMetadata* Reflection::MutableInternalMetadata(Message* message) const {
return GetPointerAtOffset<InternalMetadata>(message,
schema_.GetMetadataOffset());
}
// Simple accessors for manipulating has_bits_.
bool Reflection::HasBit(const Message& message,
const FieldDescriptor* field) const {
GOOGLE_DCHECK(!field->options().weak());
if (schema_.HasBitIndex(field) != -1) {
return IsIndexInHasBitSet(GetHasBits(message), schema_.HasBitIndex(field));
}
// Intentionally check here because HasBitIndex(field) != -1 means valid.
CheckInvalidAccess(schema_, field);
// proto3: no has-bits. All fields present except messages, which are
// present only if their message-field pointer is non-null.
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
return !schema_.IsDefaultInstance(message) &&
GetRaw<const Message*>(message, field) != nullptr;
} else {
// Non-message field (and non-oneof, since that was handled in HasField()
// before calling us), and singular (again, checked in HasField). So, this
// field must be a scalar.
// Scalar primitive (numeric or string/bytes) fields are present if
// their value is non-zero (numeric) or non-empty (string/bytes). N.B.:
// we must use this definition here, rather than the "scalar fields
// always present" in the proto3 docs, because MergeFrom() semantics
// require presence as "present on wire", and reflection-based merge
// (which uses HasField()) needs to be consistent with this.
switch (field->cpp_type()) {
case FieldDescriptor::CPPTYPE_STRING:
switch (field->options().ctype()) {
default: {
if (IsInlined(field)) {
return !GetField<InlinedStringField>(message, field)
.GetNoArena()
.empty();
}
return GetField<ArenaStringPtr>(message, field).Get().size() > 0;
}
}
return false;
case FieldDescriptor::CPPTYPE_BOOL:
return GetRaw<bool>(message, field) != false;
case FieldDescriptor::CPPTYPE_INT32:
return GetRaw<int32>(message, field) != 0;
case FieldDescriptor::CPPTYPE_INT64:
return GetRaw<int64>(message, field) != 0;
case FieldDescriptor::CPPTYPE_UINT32:
return GetRaw<uint32>(message, field) != 0;
case FieldDescriptor::CPPTYPE_UINT64:
return GetRaw<uint64>(message, field) != 0;
case FieldDescriptor::CPPTYPE_FLOAT:
return GetRaw<float>(message, field) != 0.0;
case FieldDescriptor::CPPTYPE_DOUBLE:
return GetRaw<double>(message, field) != 0.0;
case FieldDescriptor::CPPTYPE_ENUM:
return GetRaw<int>(message, field) != 0;
case FieldDescriptor::CPPTYPE_MESSAGE:
// handled above; avoid warning
break;
}
GOOGLE_LOG(FATAL) << "Reached impossible case in HasBit().";
return false;
}
}
void Reflection::SetBit(Message* message, const FieldDescriptor* field) const {
GOOGLE_DCHECK(!field->options().weak());
const uint32 index = schema_.HasBitIndex(field);
if (index == -1) return;
MutableHasBits(message)[index / 32] |=
(static_cast<uint32>(1) << (index % 32));
}
void Reflection::ClearBit(Message* message,
const FieldDescriptor* field) const {
GOOGLE_DCHECK(!field->options().weak());
if (!schema_.HasHasbits()) {
return;
}
const uint32 index = schema_.HasBitIndex(field);
MutableHasBits(message)[index / 32] &=
~(static_cast<uint32>(1) << (index % 32));
}
void Reflection::SwapBit(Message* message1, Message* message2,
const FieldDescriptor* field) const {
GOOGLE_DCHECK(!field->options().weak());
if (!schema_.HasHasbits()) {
return;
}
bool temp_has_bit = HasBit(*message1, field);
if (HasBit(*message2, field)) {
SetBit(message1, field);
} else {
ClearBit(message1, field);
}
if (temp_has_bit) {
SetBit(message2, field);
} else {
ClearBit(message2, field);
}
}
bool Reflection::HasOneof(const Message& message,
const OneofDescriptor* oneof_descriptor) const {
if (oneof_descriptor->is_synthetic()) {
return HasField(message, oneof_descriptor->field(0));
}
return (GetOneofCase(message, oneof_descriptor) > 0);
}
bool Reflection::HasOneofField(const Message& message,
const FieldDescriptor* field) const {
return (GetOneofCase(message, field->containing_oneof()) == field->number());
}
void Reflection::SetOneofCase(Message* message,
const FieldDescriptor* field) const {
*MutableOneofCase(message, field->containing_oneof()) = field->number();
}
void Reflection::ClearOneofField(Message* message,
const FieldDescriptor* field) const {
if (HasOneofField(*message, field)) {
ClearOneof(message, field->containing_oneof());
}
}
void Reflection::ClearOneof(Message* message,
const OneofDescriptor* oneof_descriptor) const {
if (oneof_descriptor->is_synthetic()) {
ClearField(message, oneof_descriptor->field(0));
return;
}
// TODO(jieluo): Consider to cache the unused object instead of deleting
// it. It will be much faster if an application switches a lot from
// a few oneof fields. Time/space tradeoff
uint32 oneof_case = GetOneofCase(*message, oneof_descriptor);
if (oneof_case > 0) {
const FieldDescriptor* field = descriptor_->FindFieldByNumber(oneof_case);
if (GetArena(message) == nullptr) {
switch (field->cpp_type()) {
case FieldDescriptor::CPPTYPE_STRING: {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
const std::string* default_ptr =
&DefaultRaw<ArenaStringPtr>(field).Get();
MutableField<ArenaStringPtr>(message, field)
->Destroy(default_ptr, GetArena(message));
break;
}
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE:
delete *MutableRaw<Message*>(message, field);
break;
default:
break;
}
}
*MutableOneofCase(message, oneof_descriptor) = 0;
}
}
#define HANDLE_TYPE(TYPE, CPPTYPE, CTYPE) \
template <> \
const RepeatedField<TYPE>& Reflection::GetRepeatedFieldInternal<TYPE>( \
const Message& message, const FieldDescriptor* field) const { \
return *static_cast<RepeatedField<TYPE>*>(MutableRawRepeatedField( \
const_cast<Message*>(&message), field, CPPTYPE, CTYPE, NULL)); \
} \
\
template <> \
RepeatedField<TYPE>* Reflection::MutableRepeatedFieldInternal<TYPE>( \
Message * message, const FieldDescriptor* field) const { \
return static_cast<RepeatedField<TYPE>*>( \
MutableRawRepeatedField(message, field, CPPTYPE, CTYPE, NULL)); \
}
HANDLE_TYPE(int32, FieldDescriptor::CPPTYPE_INT32, -1);
HANDLE_TYPE(int64, FieldDescriptor::CPPTYPE_INT64, -1);
HANDLE_TYPE(uint32, FieldDescriptor::CPPTYPE_UINT32, -1);
HANDLE_TYPE(uint64, FieldDescriptor::CPPTYPE_UINT64, -1);
HANDLE_TYPE(float, FieldDescriptor::CPPTYPE_FLOAT, -1);
HANDLE_TYPE(double, FieldDescriptor::CPPTYPE_DOUBLE, -1);
HANDLE_TYPE(bool, FieldDescriptor::CPPTYPE_BOOL, -1);
#undef HANDLE_TYPE
void* Reflection::MutableRawRepeatedString(Message* message,
const FieldDescriptor* field,
bool is_string) const {
return MutableRawRepeatedField(message, field,
FieldDescriptor::CPPTYPE_STRING,
FieldOptions::STRING, NULL);
}
// Template implementations of basic accessors. Inline because each
// template instance is only called from one location. These are
// used for all types except messages.
template <typename Type>
const Type& Reflection::GetField(const Message& message,
const FieldDescriptor* field) const {
return GetRaw<Type>(message, field);
}
template <typename Type>
void Reflection::SetField(Message* message, const FieldDescriptor* field,
const Type& value) const {
bool real_oneof = schema_.InRealOneof(field);
if (real_oneof && !HasOneofField(*message, field)) {
ClearOneof(message, field->containing_oneof());
}
*MutableRaw<Type>(message, field) = value;
real_oneof ? SetOneofCase(message, field) : SetBit(message, field);
}
template <typename Type>
Type* Reflection::MutableField(Message* message,
const FieldDescriptor* field) const {
schema_.InRealOneof(field) ? SetOneofCase(message, field)
: SetBit(message, field);
return MutableRaw<Type>(message, field);
}
template <typename Type>
const Type& Reflection::GetRepeatedField(const Message& message,
const FieldDescriptor* field,
int index) const {
return GetRaw<RepeatedField<Type> >(message, field).Get(index);
}
template <typename Type>
const Type& Reflection::GetRepeatedPtrField(const Message& message,
const FieldDescriptor* field,
int index) const {
return GetRaw<RepeatedPtrField<Type> >(message, field).Get(index);
}
template <typename Type>
void Reflection::SetRepeatedField(Message* message,
const FieldDescriptor* field, int index,
Type value) const {
MutableRaw<RepeatedField<Type> >(message, field)->Set(index, value);
}
template <typename Type>
Type* Reflection::MutableRepeatedField(Message* message,
const FieldDescriptor* field,
int index) const {
RepeatedPtrField<Type>* repeated =
MutableRaw<RepeatedPtrField<Type> >(message, field);
return repeated->Mutable(index);
}
template <typename Type>
void Reflection::AddField(Message* message, const FieldDescriptor* field,
const Type& value) const {
MutableRaw<RepeatedField<Type> >(message, field)->Add(value);
}
template <typename Type>
Type* Reflection::AddField(Message* message,
const FieldDescriptor* field) const {
RepeatedPtrField<Type>* repeated =
MutableRaw<RepeatedPtrField<Type> >(message, field);
return repeated->Add();
}
MessageFactory* Reflection::GetMessageFactory() const {
return message_factory_;
}
void* Reflection::RepeatedFieldData(Message* message,
const FieldDescriptor* field,
FieldDescriptor::CppType cpp_type,
const Descriptor* message_type) const {
GOOGLE_CHECK(field->is_repeated());
GOOGLE_CHECK(field->cpp_type() == cpp_type ||
(field->cpp_type() == FieldDescriptor::CPPTYPE_ENUM &&
cpp_type == FieldDescriptor::CPPTYPE_INT32))
<< "The type parameter T in RepeatedFieldRef<T> API doesn't match "
<< "the actual field type (for enums T should be the generated enum "
<< "type or int32).";
if (message_type != nullptr) {
GOOGLE_CHECK_EQ(message_type, field->message_type());
}
if (field->is_extension()) {
return MutableExtensionSet(message)->MutableRawRepeatedField(
field->number(), field->type(), field->is_packed(), field);
} else {
return MutableRawNonOneof<char>(message, field);
}
}
MapFieldBase* Reflection::MutableMapData(Message* message,
const FieldDescriptor* field) const {
USAGE_CHECK(IsMapFieldInApi(field), "GetMapData",
"Field is not a map field.");
return MutableRaw<MapFieldBase>(message, field);
}
const MapFieldBase* Reflection::GetMapData(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK(IsMapFieldInApi(field), "GetMapData",
"Field is not a map field.");
return &(GetRaw<MapFieldBase>(message, field));
}
namespace {
// Helper function to transform migration schema into reflection schema.
ReflectionSchema MigrationToReflectionSchema(
const Message* const* default_instance, const uint32* offsets,
MigrationSchema migration_schema) {
ReflectionSchema result;
result.default_instance_ = *default_instance;
// First 6 offsets are offsets to the special fields. The following offsets
// are the proto fields.
result.offsets_ = offsets + migration_schema.offsets_index + 5;
result.has_bit_indices_ = offsets + migration_schema.has_bit_indices_index;
result.has_bits_offset_ = offsets[migration_schema.offsets_index + 0];
result.metadata_offset_ = offsets[migration_schema.offsets_index + 1];
result.extensions_offset_ = offsets[migration_schema.offsets_index + 2];
result.oneof_case_offset_ = offsets[migration_schema.offsets_index + 3];
result.object_size_ = migration_schema.object_size;
result.weak_field_map_offset_ = offsets[migration_schema.offsets_index + 4];
return result;
}
} // namespace
class AssignDescriptorsHelper {
public:
AssignDescriptorsHelper(MessageFactory* factory,
Metadata* file_level_metadata,
const EnumDescriptor** file_level_enum_descriptors,
const MigrationSchema* schemas,
const Message* const* default_instance_data,
const uint32* offsets)
: factory_(factory),
file_level_metadata_(file_level_metadata),
file_level_enum_descriptors_(file_level_enum_descriptors),
schemas_(schemas),
default_instance_data_(default_instance_data),
offsets_(offsets) {}
void AssignMessageDescriptor(const Descriptor* descriptor) {
for (int i = 0; i < descriptor->nested_type_count(); i++) {
AssignMessageDescriptor(descriptor->nested_type(i));
}
file_level_metadata_->descriptor = descriptor;
file_level_metadata_->reflection =
new Reflection(descriptor,
MigrationToReflectionSchema(default_instance_data_,
offsets_, *schemas_),
DescriptorPool::internal_generated_pool(), factory_);
for (int i = 0; i < descriptor->enum_type_count(); i++) {
AssignEnumDescriptor(descriptor->enum_type(i));
}
schemas_++;
default_instance_data_++;
file_level_metadata_++;
}
void AssignEnumDescriptor(const EnumDescriptor* descriptor) {
*file_level_enum_descriptors_ = descriptor;
file_level_enum_descriptors_++;
}
const Metadata* GetCurrentMetadataPtr() const { return file_level_metadata_; }
private:
MessageFactory* factory_;
Metadata* file_level_metadata_;
const EnumDescriptor** file_level_enum_descriptors_;
const MigrationSchema* schemas_;
const Message* const* default_instance_data_;
const uint32* offsets_;
};
namespace {
// We have the routines that assign descriptors and build reflection
// automatically delete the allocated reflection. MetadataOwner owns
// all the allocated reflection instances.
struct MetadataOwner {
~MetadataOwner() {
for (auto range : metadata_arrays_) {
for (const Metadata* m = range.first; m < range.second; m++) {
delete m->reflection;
}
}
}
void AddArray(const Metadata* begin, const Metadata* end) {
mu_.Lock();
metadata_arrays_.push_back(std::make_pair(begin, end));
mu_.Unlock();
}
static MetadataOwner* Instance() {
static MetadataOwner* res = OnShutdownDelete(new MetadataOwner);
return res;
}
private:
MetadataOwner() = default; // private because singleton
WrappedMutex mu_;
std::vector<std::pair<const Metadata*, const Metadata*> > metadata_arrays_;
};
void AssignDescriptorsImpl(const DescriptorTable* table, bool eager) {
// Ensure the file descriptor is added to the pool.
{
// This only happens once per proto file. So a global mutex to serialize
// calls to AddDescriptors.
static WrappedMutex mu{GOOGLE_PROTOBUF_LINKER_INITIALIZED};
mu.Lock();
AddDescriptors(table);
mu.Unlock();
}
if (eager) {
// Normally we do not want to eagerly build descriptors of our deps.
// However if this proto is optimized for code size (ie using reflection)
// and it has a message extending a custom option of a descriptor with that
// message being optimized for code size as well. Building the descriptors
// in this file requires parsing the serialized file descriptor, which now
// requires parsing the message extension, which potentially requires
// building the descriptor of the message extending one of the options.
// However we are already updating descriptor pool under a lock. To prevent
// this the compiler statically looks for this case and we just make sure we
// first build the descriptors of all our dependencies, preventing the
// deadlock.
int num_deps = table->num_deps;
for (int i = 0; i < num_deps; i++) {
// In case of weak fields deps[i] could be null.
if (table->deps[i]) AssignDescriptors(table->deps[i], true);
}
}
// Fill the arrays with pointers to descriptors and reflection classes.
const FileDescriptor* file =
DescriptorPool::internal_generated_pool()->FindFileByName(
table->filename);
GOOGLE_CHECK(file != nullptr);
MessageFactory* factory = MessageFactory::generated_factory();
AssignDescriptorsHelper helper(
factory, table->file_level_metadata, table->file_level_enum_descriptors,
table->schemas, table->default_instances, table->offsets);
for (int i = 0; i < file->message_type_count(); i++) {
helper.AssignMessageDescriptor(file->message_type(i));
}
for (int i = 0; i < file->enum_type_count(); i++) {
helper.AssignEnumDescriptor(file->enum_type(i));
}
if (file->options().cc_generic_services()) {
for (int i = 0; i < file->service_count(); i++) {
table->file_level_service_descriptors[i] = file->service(i);
}
}
MetadataOwner::Instance()->AddArray(table->file_level_metadata,
helper.GetCurrentMetadataPtr());
}
void AddDescriptorsImpl(const DescriptorTable* table) {
// Reflection refers to the default instances so make sure they are
// initialized.
for (int i = 0; i < table->num_sccs; i++) {
internal::InitSCC(table->init_default_instances[i]);
}
// Ensure all dependent descriptors are registered to the generated descriptor
// pool and message factory.
int num_deps = table->num_deps;
for (int i = 0; i < num_deps; i++) {
// In case of weak fields deps[i] could be null.
if (table->deps[i]) AddDescriptors(table->deps[i]);
}
// Register the descriptor of this file.
DescriptorPool::InternalAddGeneratedFile(table->descriptor, table->size);
MessageFactory::InternalRegisterGeneratedFile(table);
}
} // namespace
// Separate function because it needs to be a friend of
// Reflection
void RegisterAllTypesInternal(const Metadata* file_level_metadata, int size) {
for (int i = 0; i < size; i++) {
const Reflection* reflection = file_level_metadata[i].reflection;
MessageFactory::InternalRegisterGeneratedMessage(
file_level_metadata[i].descriptor,
reflection->schema_.default_instance_);
}
}
namespace internal {
void AssignDescriptors(const DescriptorTable* table, bool eager) {
if (!eager) eager = table->is_eager;
call_once(*table->once, AssignDescriptorsImpl, table, eager);
}
void AddDescriptors(const DescriptorTable* table) {
// AddDescriptors is not thread safe. Callers need to ensure calls are
// properly serialized. This function is only called pre-main by global
// descriptors and we can assume single threaded access or it's called
// by AssignDescriptorImpl which uses a mutex to sequence calls.
if (table->is_initialized) return;
table->is_initialized = true;
AddDescriptorsImpl(table);
}
void RegisterFileLevelMetadata(const DescriptorTable* table) {
AssignDescriptors(table);
RegisterAllTypesInternal(table->file_level_metadata, table->num_messages);
}
void UnknownFieldSetSerializer(const uint8* base, uint32 offset, uint32 tag,
uint32 has_offset,
io::CodedOutputStream* output) {
const void* ptr = base + offset;
const InternalMetadata* metadata = static_cast<const InternalMetadata*>(ptr);
if (metadata->have_unknown_fields()) {
internal::WireFormat::SerializeUnknownFields(
metadata->unknown_fields<UnknownFieldSet>(
UnknownFieldSet::default_instance),
output);
}
}
} // namespace internal
} // namespace protobuf
} // namespace google