dfhack/depends/protobuf/google/protobuf/generated_message_reflectio...

1229 lines
46 KiB
C++

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://code.google.com/p/protobuf/
//
// 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 <algorithm>
#include <google/protobuf/generated_message_reflection.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/repeated_field.h>
#include <google/protobuf/extension_set.h>
#include <google/protobuf/generated_message_util.h>
#include <google/protobuf/stubs/common.h>
namespace google {
namespace protobuf {
namespace internal {
int StringSpaceUsedExcludingSelf(const string& str) {
const void* start = &str;
const void* end = &str + 1;
if (start <= str.data() && str.data() <= end) {
// The string's data is stored inside the string object itself.
return 0;
} else {
return str.capacity();
}
}
bool ParseNamedEnum(const EnumDescriptor* descriptor,
const string& name,
int* value) {
const EnumValueDescriptor* d = descriptor->FindValueByName(name);
if (d == NULL) return false;
*value = d->number();
return true;
}
const string& NameOfEnum(const EnumDescriptor* descriptor, int value) {
const EnumValueDescriptor* d = descriptor->FindValueByNumber(value);
return (d == NULL ? kEmptyString : d->name());
}
// ===================================================================
// Helpers for reporting usage errors (e.g. trying to use GetInt32() on
// a string field).
namespace {
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();
}
#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
// ===================================================================
GeneratedMessageReflection::GeneratedMessageReflection(
const Descriptor* descriptor,
const Message* default_instance,
const int offsets[],
int has_bits_offset,
int unknown_fields_offset,
int extensions_offset,
const DescriptorPool* descriptor_pool,
MessageFactory* factory,
int object_size)
: descriptor_ (descriptor),
default_instance_ (default_instance),
offsets_ (offsets),
has_bits_offset_ (has_bits_offset),
unknown_fields_offset_(unknown_fields_offset),
extensions_offset_(extensions_offset),
object_size_ (object_size),
descriptor_pool_ ((descriptor_pool == NULL) ?
DescriptorPool::generated_pool() :
descriptor_pool),
message_factory_ (factory) {
}
GeneratedMessageReflection::~GeneratedMessageReflection() {}
const UnknownFieldSet& GeneratedMessageReflection::GetUnknownFields(
const Message& message) const {
const void* ptr = reinterpret_cast<const uint8*>(&message) +
unknown_fields_offset_;
return *reinterpret_cast<const UnknownFieldSet*>(ptr);
}
UnknownFieldSet* GeneratedMessageReflection::MutableUnknownFields(
Message* message) const {
void* ptr = reinterpret_cast<uint8*>(message) + unknown_fields_offset_;
return reinterpret_cast<UnknownFieldSet*>(ptr);
}
int GeneratedMessageReflection::SpaceUsed(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.
int total_size = object_size_;
total_size += GetUnknownFields(message).SpaceUsedExcludingSelf();
if (extensions_offset_ != -1) {
total_size += GetExtensionSet(message).SpaceUsedExcludingSelf();
}
for (int i = 0; i < descriptor_->field_count(); 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) \
.SpaceUsedExcludingSelf(); \
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<string> >(message, field)
.SpaceUsedExcludingSelf();
break;
}
break;
case FieldDescriptor::CPPTYPE_MESSAGE:
// We don't know which subclass of RepeatedPtrFieldBase the type is,
// so we use RepeatedPtrFieldBase directly.
total_size +=
GetRaw<RepeatedPtrFieldBase>(message, field)
.SpaceUsedExcludingSelf<GenericTypeHandler<Message> >();
break;
}
} else {
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: {
const string* ptr = GetField<const string*>(message, field);
// 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 string* default_ptr = DefaultRaw<const string*>(field);
if (ptr != default_ptr) {
// string fields are represented by just a pointer, so also
// include sizeof(string) as well.
total_size += sizeof(*ptr) + StringSpaceUsedExcludingSelf(*ptr);
}
break;
}
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE:
if (&message == default_instance_) {
// 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 != NULL) {
total_size += sub_message->SpaceUsed();
}
}
break;
}
}
}
return total_size;
}
void GeneratedMessageReflection::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 \""
<< 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.";
uint32* has_bits1 = MutableHasBits(message1);
uint32* has_bits2 = MutableHasBits(message2);
int has_bits_size = (descriptor_->field_count() + 31) / 32;
for (int i = 0; i < has_bits_size; i++) {
std::swap(has_bits1[i], has_bits2[i]);
}
for (int i = 0; i < descriptor_->field_count(); i++) {
const FieldDescriptor* field = descriptor_->field(i);
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:
case FieldDescriptor::CPPTYPE_MESSAGE:
MutableRaw<RepeatedPtrFieldBase>(message1, field)->Swap(
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 );
SWAP_VALUES(MESSAGE, Message*);
#undef SWAP_VALUES
case FieldDescriptor::CPPTYPE_STRING:
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
std::swap(*MutableRaw<string*>(message1, field),
*MutableRaw<string*>(message2, field));
break;
}
break;
default:
GOOGLE_LOG(FATAL) << "Unimplemented type: " << field->cpp_type();
}
}
}
if (extensions_offset_ != -1) {
MutableExtensionSet(message1)->Swap(MutableExtensionSet(message2));
}
MutableUnknownFields(message1)->Swap(MutableUnknownFields(message2));
}
// -------------------------------------------------------------------
bool GeneratedMessageReflection::HasField(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(HasField);
USAGE_CHECK_SINGULAR(HasField);
if (field->is_extension()) {
return GetExtensionSet(message).Has(field->number());
} else {
return HasBit(message, field);
}
}
int GeneratedMessageReflection::FieldSize(const Message& message,
const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(FieldSize);
USAGE_CHECK_REPEATED(FieldSize);
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:
return GetRaw<RepeatedPtrFieldBase>(message, field).size();
}
GOOGLE_LOG(FATAL) << "Can't get here.";
return 0;
}
}
void GeneratedMessageReflection::ClearField(
Message* message, const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(ClearField);
if (field->is_extension()) {
MutableExtensionSet(message)->ClearExtension(field->number());
} else if (!field->is_repeated()) {
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:
const string* default_ptr = DefaultRaw<const string*>(field);
string** value = MutableRaw<string*>(message, field);
if (*value != default_ptr) {
if (field->has_default_value()) {
(*value)->assign(field->default_value_string());
} else {
(*value)->clear();
}
}
break;
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE:
(*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<string> >(message, field)->Clear();
break;
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE: {
// 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 GeneratedMessageReflection::RemoveLast(
Message* message,
const FieldDescriptor* field) const {
USAGE_CHECK_MESSAGE_TYPE(RemoveLast);
USAGE_CHECK_REPEATED(RemoveLast);
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<string> >(message, field)->RemoveLast();
break;
}
break;
case FieldDescriptor::CPPTYPE_MESSAGE:
MutableRaw<RepeatedPtrFieldBase>(message, field)
->RemoveLast<GenericTypeHandler<Message> >();
break;
}
}
}
void GeneratedMessageReflection::SwapElements(
Message* message,
const FieldDescriptor* field,
int index1,
int index2) const {
USAGE_CHECK_MESSAGE_TYPE(Swap);
USAGE_CHECK_REPEATED(Swap);
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:
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();
}
};
} // namespace
void GeneratedMessageReflection::ListFields(
const Message& message,
vector<const FieldDescriptor*>* output) const {
output->clear();
// Optimization: The default instance never has any fields set.
if (&message == default_instance_) return;
for (int i = 0; i < descriptor_->field_count(); i++) {
const FieldDescriptor* field = descriptor_->field(i);
if (field->is_repeated()) {
if (FieldSize(message, field) > 0) {
output->push_back(field);
}
} else {
if (HasBit(message, field)) {
output->push_back(field);
}
}
}
if (extensions_offset_ != -1) {
GetExtensionSet(message).AppendToList(descriptor_, descriptor_pool_,
output);
}
// ListFields() must sort output by field number.
sort(output->begin(), output->end(), FieldNumberSorter());
}
// -------------------------------------------------------------------
#undef DEFINE_PRIMITIVE_ACCESSORS
#define DEFINE_PRIMITIVE_ACCESSORS(TYPENAME, TYPE, PASSTYPE, CPPTYPE) \
PASSTYPE GeneratedMessageReflection::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 GeneratedMessageReflection::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 GeneratedMessageReflection::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 GeneratedMessageReflection::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 GeneratedMessageReflection::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
// -------------------------------------------------------------------
string GeneratedMessageReflection::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:
return *GetField<const string*>(message, field);
}
GOOGLE_LOG(FATAL) << "Can't get here.";
return kEmptyString; // Make compiler happy.
}
}
const string& GeneratedMessageReflection::GetStringReference(
const Message& message,
const FieldDescriptor* field, 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:
return *GetField<const string*>(message, field);
}
GOOGLE_LOG(FATAL) << "Can't get here.";
return kEmptyString; // Make compiler happy.
}
}
void GeneratedMessageReflection::SetString(
Message* message, const FieldDescriptor* field,
const string& value) const {
USAGE_CHECK_ALL(SetString, SINGULAR, STRING);
if (field->is_extension()) {
return MutableExtensionSet(message)->SetString(field->number(),
field->type(), value, field);
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING: {
string** ptr = MutableField<string*>(message, field);
if (*ptr == DefaultRaw<const string*>(field)) {
*ptr = new string(value);
} else {
(*ptr)->assign(value);
}
break;
}
}
}
}
string GeneratedMessageReflection::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<string>(message, field, index);
}
GOOGLE_LOG(FATAL) << "Can't get here.";
return kEmptyString; // Make compiler happy.
}
}
const string& GeneratedMessageReflection::GetRepeatedStringReference(
const Message& message, const FieldDescriptor* field,
int index, 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<string>(message, field, index);
}
GOOGLE_LOG(FATAL) << "Can't get here.";
return kEmptyString; // Make compiler happy.
}
}
void GeneratedMessageReflection::SetRepeatedString(
Message* message, const FieldDescriptor* field,
int index, const string& value) const {
USAGE_CHECK_ALL(SetRepeatedString, REPEATED, STRING);
if (field->is_extension()) {
MutableExtensionSet(message)->SetRepeatedString(
field->number(), index, value);
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
*MutableRepeatedField<string>(message, field, index) = value;
break;
}
}
}
void GeneratedMessageReflection::AddString(
Message* message, const FieldDescriptor* field,
const string& value) const {
USAGE_CHECK_ALL(AddString, REPEATED, STRING);
if (field->is_extension()) {
MutableExtensionSet(message)->AddString(field->number(),
field->type(), value, field);
} else {
switch (field->options().ctype()) {
default: // TODO(kenton): Support other string reps.
case FieldOptions::STRING:
*AddField<string>(message, field) = value;
break;
}
}
}
// -------------------------------------------------------------------
const EnumValueDescriptor* GeneratedMessageReflection::GetEnum(
const Message& message, const FieldDescriptor* field) const {
USAGE_CHECK_ALL(GetEnum, SINGULAR, ENUM);
int value;
if (field->is_extension()) {
value = GetExtensionSet(message).GetEnum(
field->number(), field->default_value_enum()->number());
} else {
value = GetField<int>(message, field);
}
const EnumValueDescriptor* result =
field->enum_type()->FindValueByNumber(value);
GOOGLE_CHECK(result != NULL);
return result;
}
void GeneratedMessageReflection::SetEnum(
Message* message, const FieldDescriptor* field,
const EnumValueDescriptor* value) const {
USAGE_CHECK_ALL(SetEnum, SINGULAR, ENUM);
USAGE_CHECK_ENUM_VALUE(SetEnum);
if (field->is_extension()) {
MutableExtensionSet(message)->SetEnum(field->number(), field->type(),
value->number(), field);
} else {
SetField<int>(message, field, value->number());
}
}
const EnumValueDescriptor* GeneratedMessageReflection::GetRepeatedEnum(
const Message& message, const FieldDescriptor* field, int index) const {
USAGE_CHECK_ALL(GetRepeatedEnum, REPEATED, ENUM);
int value;
if (field->is_extension()) {
value = GetExtensionSet(message).GetRepeatedEnum(field->number(), index);
} else {
value = GetRepeatedField<int>(message, field, index);
}
const EnumValueDescriptor* result =
field->enum_type()->FindValueByNumber(value);
GOOGLE_CHECK(result != NULL);
return result;
}
void GeneratedMessageReflection::SetRepeatedEnum(
Message* message,
const FieldDescriptor* field, int index,
const EnumValueDescriptor* value) const {
USAGE_CHECK_ALL(SetRepeatedEnum, REPEATED, ENUM);
USAGE_CHECK_ENUM_VALUE(SetRepeatedEnum);
if (field->is_extension()) {
MutableExtensionSet(message)->SetRepeatedEnum(
field->number(), index, value->number());
} else {
SetRepeatedField<int>(message, field, index, value->number());
}
}
void GeneratedMessageReflection::AddEnum(
Message* message, const FieldDescriptor* field,
const EnumValueDescriptor* value) const {
USAGE_CHECK_ALL(AddEnum, REPEATED, ENUM);
USAGE_CHECK_ENUM_VALUE(AddEnum);
if (field->is_extension()) {
MutableExtensionSet(message)->AddEnum(field->number(), field->type(),
field->options().packed(),
value->number(), field);
} else {
AddField<int>(message, field, value->number());
}
}
// -------------------------------------------------------------------
const Message& GeneratedMessageReflection::GetMessage(
const Message& message, const FieldDescriptor* field,
MessageFactory* factory) const {
USAGE_CHECK_ALL(GetMessage, SINGULAR, MESSAGE);
if (field->is_extension()) {
return static_cast<const Message&>(
GetExtensionSet(message).GetMessage(
field->number(), field->message_type(),
factory == NULL ? message_factory_ : factory));
} else {
const Message* result = GetRaw<const Message*>(message, field);
if (result == NULL) {
result = DefaultRaw<const Message*>(field);
}
return *result;
}
}
Message* GeneratedMessageReflection::MutableMessage(
Message* message, const FieldDescriptor* field,
MessageFactory* factory) const {
USAGE_CHECK_ALL(MutableMessage, SINGULAR, MESSAGE);
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->MutableMessage(field,
factory == NULL ? message_factory_ : factory));
} else {
Message** result = MutableField<Message*>(message, field);
if (*result == NULL) {
const Message* default_message = DefaultRaw<const Message*>(field);
*result = default_message->New();
}
return *result;
}
}
const Message& GeneratedMessageReflection::GetRepeatedMessage(
const Message& message, const FieldDescriptor* field, int index) const {
USAGE_CHECK_ALL(GetRepeatedMessage, REPEATED, MESSAGE);
if (field->is_extension()) {
return static_cast<const Message&>(
GetExtensionSet(message).GetRepeatedMessage(field->number(), index));
} else {
return GetRaw<RepeatedPtrFieldBase>(message, field)
.Get<GenericTypeHandler<Message> >(index);
}
}
Message* GeneratedMessageReflection::MutableRepeatedMessage(
Message* message, const FieldDescriptor* field, int index) const {
USAGE_CHECK_ALL(MutableRepeatedMessage, REPEATED, MESSAGE);
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->MutableRepeatedMessage(
field->number(), index));
} else {
return MutableRaw<RepeatedPtrFieldBase>(message, field)
->Mutable<GenericTypeHandler<Message> >(index);
}
}
Message* GeneratedMessageReflection::AddMessage(
Message* message, const FieldDescriptor* field,
MessageFactory* factory) const {
USAGE_CHECK_ALL(AddMessage, REPEATED, MESSAGE);
if (factory == NULL) factory = message_factory_;
if (field->is_extension()) {
return static_cast<Message*>(
MutableExtensionSet(message)->AddMessage(field, factory));
} else {
// We can't use AddField<Message>() because RepeatedPtrFieldBase doesn't
// know how to allocate one.
RepeatedPtrFieldBase* repeated =
MutableRaw<RepeatedPtrFieldBase>(message, field);
Message* result = repeated->AddFromCleared<GenericTypeHandler<Message> >();
if (result == NULL) {
// 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();
repeated->AddAllocated<GenericTypeHandler<Message> >(result);
}
return result;
}
}
// -------------------------------------------------------------------
const FieldDescriptor* GeneratedMessageReflection::FindKnownExtensionByName(
const string& name) const {
if (extensions_offset_ == -1) return NULL;
const FieldDescriptor* result = descriptor_pool_->FindExtensionByName(name);
if (result != NULL && result->containing_type() == descriptor_) {
return result;
}
if (descriptor_->options().message_set_wire_format()) {
// MessageSet extensions may be identified by type name.
const Descriptor* type = descriptor_pool_->FindMessageTypeByName(name);
if (type != NULL) {
// Look for a matching extension in the foreign type's scope.
for (int i = 0; i < type->extension_count(); i++) {
const FieldDescriptor* extension = type->extension(i);
if (extension->containing_type() == descriptor_ &&
extension->type() == FieldDescriptor::TYPE_MESSAGE &&
extension->is_optional() &&
extension->message_type() == type) {
// Found it.
return extension;
}
}
}
}
return NULL;
}
const FieldDescriptor* GeneratedMessageReflection::FindKnownExtensionByNumber(
int number) const {
if (extensions_offset_ == -1) return NULL;
return descriptor_pool_->FindExtensionByNumber(descriptor_, number);
}
// ===================================================================
// Some private helpers.
// These simple template accessors obtain pointers (or references) to
// the given field.
template <typename Type>
inline const Type& GeneratedMessageReflection::GetRaw(
const Message& message, const FieldDescriptor* field) const {
const void* ptr = reinterpret_cast<const uint8*>(&message) +
offsets_[field->index()];
return *reinterpret_cast<const Type*>(ptr);
}
template <typename Type>
inline Type* GeneratedMessageReflection::MutableRaw(
Message* message, const FieldDescriptor* field) const {
void* ptr = reinterpret_cast<uint8*>(message) + offsets_[field->index()];
return reinterpret_cast<Type*>(ptr);
}
template <typename Type>
inline const Type& GeneratedMessageReflection::DefaultRaw(
const FieldDescriptor* field) const {
const void* ptr = reinterpret_cast<const uint8*>(default_instance_) +
offsets_[field->index()];
return *reinterpret_cast<const Type*>(ptr);
}
inline const uint32* GeneratedMessageReflection::GetHasBits(
const Message& message) const {
const void* ptr = reinterpret_cast<const uint8*>(&message) + has_bits_offset_;
return reinterpret_cast<const uint32*>(ptr);
}
inline uint32* GeneratedMessageReflection::MutableHasBits(
Message* message) const {
void* ptr = reinterpret_cast<uint8*>(message) + has_bits_offset_;
return reinterpret_cast<uint32*>(ptr);
}
inline const ExtensionSet& GeneratedMessageReflection::GetExtensionSet(
const Message& message) const {
GOOGLE_DCHECK_NE(extensions_offset_, -1);
const void* ptr = reinterpret_cast<const uint8*>(&message) +
extensions_offset_;
return *reinterpret_cast<const ExtensionSet*>(ptr);
}
inline ExtensionSet* GeneratedMessageReflection::MutableExtensionSet(
Message* message) const {
GOOGLE_DCHECK_NE(extensions_offset_, -1);
void* ptr = reinterpret_cast<uint8*>(message) + extensions_offset_;
return reinterpret_cast<ExtensionSet*>(ptr);
}
// Simple accessors for manipulating has_bits_.
inline bool GeneratedMessageReflection::HasBit(
const Message& message, const FieldDescriptor* field) const {
return GetHasBits(message)[field->index() / 32] &
(1 << (field->index() % 32));
}
inline void GeneratedMessageReflection::SetBit(
Message* message, const FieldDescriptor* field) const {
MutableHasBits(message)[field->index() / 32] |= (1 << (field->index() % 32));
}
inline void GeneratedMessageReflection::ClearBit(
Message* message, const FieldDescriptor* field) const {
MutableHasBits(message)[field->index() / 32] &= ~(1 << (field->index() % 32));
}
// 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>
inline const Type& GeneratedMessageReflection::GetField(
const Message& message, const FieldDescriptor* field) const {
return GetRaw<Type>(message, field);
}
template <typename Type>
inline void GeneratedMessageReflection::SetField(
Message* message, const FieldDescriptor* field, const Type& value) const {
*MutableRaw<Type>(message, field) = value;
SetBit(message, field);
}
template <typename Type>
inline Type* GeneratedMessageReflection::MutableField(
Message* message, const FieldDescriptor* field) const {
SetBit(message, field);
return MutableRaw<Type>(message, field);
}
template <typename Type>
inline const Type& GeneratedMessageReflection::GetRepeatedField(
const Message& message, const FieldDescriptor* field, int index) const {
return GetRaw<RepeatedField<Type> >(message, field).Get(index);
}
template <typename Type>
inline const Type& GeneratedMessageReflection::GetRepeatedPtrField(
const Message& message, const FieldDescriptor* field, int index) const {
return GetRaw<RepeatedPtrField<Type> >(message, field).Get(index);
}
template <typename Type>
inline void GeneratedMessageReflection::SetRepeatedField(
Message* message, const FieldDescriptor* field,
int index, Type value) const {
MutableRaw<RepeatedField<Type> >(message, field)->Set(index, value);
}
template <typename Type>
inline Type* GeneratedMessageReflection::MutableRepeatedField(
Message* message, const FieldDescriptor* field, int index) const {
RepeatedPtrField<Type>* repeated =
MutableRaw<RepeatedPtrField<Type> >(message, field);
return repeated->Mutable(index);
}
template <typename Type>
inline void GeneratedMessageReflection::AddField(
Message* message, const FieldDescriptor* field, const Type& value) const {
MutableRaw<RepeatedField<Type> >(message, field)->Add(value);
}
template <typename Type>
inline Type* GeneratedMessageReflection::AddField(
Message* message, const FieldDescriptor* field) const {
RepeatedPtrField<Type>* repeated =
MutableRaw<RepeatedPtrField<Type> >(message, field);
return repeated->Add();
}
} // namespace internal
} // namespace protobuf
} // namespace google