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dfhack/library/depends/protobuf/google/protobuf/reflection_ops.cc

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// 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 <google/protobuf/reflection_ops.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/unknown_field_set.h>
#include <google/protobuf/stubs/strutil.h>
namespace google {
namespace protobuf {
namespace internal {
void ReflectionOps::Copy(const Message& from, Message* to) {
if (&from == to) return;
Clear(to);
Merge(from, to);
}
void ReflectionOps::Merge(const Message& from, Message* to) {
GOOGLE_CHECK_NE(&from, to);
const Descriptor* descriptor = from.GetDescriptor();
GOOGLE_CHECK_EQ(to->GetDescriptor(), descriptor)
<< "Tried to merge messages of different types.";
const Reflection* from_reflection = from.GetReflection();
const Reflection* to_reflection = to->GetReflection();
vector<const FieldDescriptor*> fields;
from_reflection->ListFields(from, &fields);
for (int i = 0; i < fields.size(); i++) {
const FieldDescriptor* field = fields[i];
if (field->is_repeated()) {
int count = from_reflection->FieldSize(from, field);
for (int j = 0; j < count; j++) {
switch (field->cpp_type()) {
#define HANDLE_TYPE(CPPTYPE, METHOD) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
to_reflection->Add##METHOD(to, field, \
from_reflection->GetRepeated##METHOD(from, field, j)); \
break;
HANDLE_TYPE(INT32 , Int32 );
HANDLE_TYPE(INT64 , Int64 );
HANDLE_TYPE(UINT32, UInt32);
HANDLE_TYPE(UINT64, UInt64);
HANDLE_TYPE(FLOAT , Float );
HANDLE_TYPE(DOUBLE, Double);
HANDLE_TYPE(BOOL , Bool );
HANDLE_TYPE(STRING, String);
HANDLE_TYPE(ENUM , Enum );
#undef HANDLE_TYPE
case FieldDescriptor::CPPTYPE_MESSAGE:
to_reflection->AddMessage(to, field)->MergeFrom(
from_reflection->GetRepeatedMessage(from, field, j));
break;
}
}
} else {
switch (field->cpp_type()) {
#define HANDLE_TYPE(CPPTYPE, METHOD) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
to_reflection->Set##METHOD(to, field, \
from_reflection->Get##METHOD(from, field)); \
break;
HANDLE_TYPE(INT32 , Int32 );
HANDLE_TYPE(INT64 , Int64 );
HANDLE_TYPE(UINT32, UInt32);
HANDLE_TYPE(UINT64, UInt64);
HANDLE_TYPE(FLOAT , Float );
HANDLE_TYPE(DOUBLE, Double);
HANDLE_TYPE(BOOL , Bool );
HANDLE_TYPE(STRING, String);
HANDLE_TYPE(ENUM , Enum );
#undef HANDLE_TYPE
case FieldDescriptor::CPPTYPE_MESSAGE:
to_reflection->MutableMessage(to, field)->MergeFrom(
from_reflection->GetMessage(from, field));
break;
}
}
}
to_reflection->MutableUnknownFields(to)->MergeFrom(
from_reflection->GetUnknownFields(from));
}
void ReflectionOps::Clear(Message* message) {
const Reflection* reflection = message->GetReflection();
vector<const FieldDescriptor*> fields;
reflection->ListFields(*message, &fields);
for (int i = 0; i < fields.size(); i++) {
reflection->ClearField(message, fields[i]);
}
reflection->MutableUnknownFields(message)->Clear();
}
bool ReflectionOps::IsInitialized(const Message& message) {
const Descriptor* descriptor = message.GetDescriptor();
const Reflection* reflection = message.GetReflection();
// Check required fields of this message.
for (int i = 0; i < descriptor->field_count(); i++) {
if (descriptor->field(i)->is_required()) {
if (!reflection->HasField(message, descriptor->field(i))) {
return false;
}
}
}
// Check that sub-messages are initialized.
vector<const FieldDescriptor*> fields;
reflection->ListFields(message, &fields);
for (int i = 0; i < fields.size(); i++) {
const FieldDescriptor* field = fields[i];
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
if (field->is_repeated()) {
int size = reflection->FieldSize(message, field);
for (int i = 0; i < size; i++) {
if (!reflection->GetRepeatedMessage(message, field, i)
.IsInitialized()) {
return false;
}
}
} else {
if (!reflection->GetMessage(message, field).IsInitialized()) {
return false;
}
}
}
}
return true;
}
void ReflectionOps::DiscardUnknownFields(Message* message) {
const Reflection* reflection = message->GetReflection();
reflection->MutableUnknownFields(message)->Clear();
vector<const FieldDescriptor*> fields;
reflection->ListFields(*message, &fields);
for (int i = 0; i < fields.size(); i++) {
const FieldDescriptor* field = fields[i];
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
if (field->is_repeated()) {
int size = reflection->FieldSize(*message, field);
for (int i = 0; i < size; i++) {
reflection->MutableRepeatedMessage(message, field, i)
->DiscardUnknownFields();
}
} else {
reflection->MutableMessage(message, field)->DiscardUnknownFields();
}
}
}
}
static string SubMessagePrefix(const string& prefix,
const FieldDescriptor* field,
int index) {
string result(prefix);
if (field->is_extension()) {
result.append("(");
result.append(field->full_name());
result.append(")");
} else {
result.append(field->name());
}
if (index != -1) {
result.append("[");
result.append(SimpleItoa(index));
result.append("]");
}
result.append(".");
return result;
}
void ReflectionOps::FindInitializationErrors(
const Message& message,
const string& prefix,
vector<string>* errors) {
const Descriptor* descriptor = message.GetDescriptor();
const Reflection* reflection = message.GetReflection();
// Check required fields of this message.
for (int i = 0; i < descriptor->field_count(); i++) {
if (descriptor->field(i)->is_required()) {
if (!reflection->HasField(message, descriptor->field(i))) {
errors->push_back(prefix + descriptor->field(i)->name());
}
}
}
// Check sub-messages.
vector<const FieldDescriptor*> fields;
reflection->ListFields(message, &fields);
for (int i = 0; i < fields.size(); i++) {
const FieldDescriptor* field = fields[i];
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
if (field->is_repeated()) {
int size = reflection->FieldSize(message, field);
for (int i = 0; i < size; i++) {
const Message& sub_message =
reflection->GetRepeatedMessage(message, field, i);
FindInitializationErrors(sub_message,
SubMessagePrefix(prefix, field, i),
errors);
}
} else {
const Message& sub_message = reflection->GetMessage(message, field);
FindInitializationErrors(sub_message,
SubMessagePrefix(prefix, field, -1),
errors);
}
}
}
}
} // namespace internal
} // namespace protobuf
} // namespace google
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