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299 lines
8.3 KiB
299 lines
8.3 KiB
//======== Copyright © 2011, Valve Corporation, All rights reserved. ========//
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//
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// Purpose: Helper functions for protobufs
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//
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//===========================================================================//
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#include "tier0/dbg.h"
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#include "google/protobuf/descriptor.h"
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#include "google/protobuf/reflection_ops.h"
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#include "google/protobuf/descriptor.pb.h"
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using namespace google::protobuf;
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//using namespace stl;
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class CProtobufLogHandler
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{
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public:
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CProtobufLogHandler()
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{
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google::protobuf::SetLogHandler( LogHandler );
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}
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~CProtobufLogHandler()
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{
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google::protobuf::SetLogHandler( NULL );
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}
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static void LogHandler( google::protobuf::LogLevel level, const char* filename, int line, const std::string& message )
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{
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switch ( level )
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{
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case google::protobuf::LOGLEVEL_INFO:
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case google::protobuf::LOGLEVEL_WARNING:
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DevMsg( "Protobuf: %s(%d): %s\n", filename, line, message.c_str() );
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break;
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case google::protobuf::LOGLEVEL_ERROR:
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Warning( "Protobuf: %s(%d): %s\n", filename, line, message.c_str() );
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break;
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case google::protobuf::LOGLEVEL_FATAL:
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Warning( "Protobuf: %s(%d): %s\n", filename, line, message.c_str() );
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Plat_ExitProcess( 100 );
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break;
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}
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}
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};
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static CProtobufLogHandler g_ProtobufLogHandler;
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/*
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//----------------------------------------------------------------------------
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// Purpose: Copies a field into a third message if its different in the other messages
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//----------------------------------------------------------------------------
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bool ProtoBufDeltaMerge( const ::google::protobuf::Message &src, const ::google::protobuf::Message &delta, ::google::protobuf::Message* to )
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{
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const Descriptor* descriptor = src.GetDescriptor();
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if ( descriptor != delta.GetDescriptor() )
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{
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Warning( "Tried to merge delta to a src message of a different type.");
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return false;
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}
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if ( descriptor != to->GetDescriptor() )
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{
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Warning( "Tried to merge dleta to a message of a different type.");
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return false;
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}
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to->Clear();
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const Reflection* src_reflection = src.GetReflection();
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const Reflection* delta_reflection = delta.GetReflection();
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const Reflection* to_reflection = to->GetReflection();
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Assert( src_reflection == delta_reflection );
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Assert( src_reflection == to_reflection );
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vector<const FieldDescriptor*> fields;
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src_reflection->ListFields(src, &fields);
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for ( size_t i = 0; i < fields.size(); i++ )
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{
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const FieldDescriptor* field = fields[i];
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// We can't really delta repeated fields, it sucks
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if ( field->is_repeated() )
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{
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int count = delta_reflection->FieldSize(delta, field);
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to_reflection->ClearField( to, field );
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for ( int j = 0; j < count; j++ )
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{
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switch ( field->cpp_type() )
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{
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#define HANDLE_TYPE(CPPTYPE, METHOD) \
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case FieldDescriptor::CPPTYPE_##CPPTYPE: \
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to_reflection->Add##METHOD(to, field, delta_reflection->GetRepeated##METHOD(delta, field, j)); \
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break;
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HANDLE_TYPE(INT32 , Int32 );
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HANDLE_TYPE(INT64 , Int64 );
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HANDLE_TYPE(UINT32, UInt32);
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HANDLE_TYPE(UINT64, UInt64);
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HANDLE_TYPE(FLOAT , Float );
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HANDLE_TYPE(DOUBLE, Double);
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HANDLE_TYPE(BOOL , Bool );
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HANDLE_TYPE(STRING, String);
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HANDLE_TYPE(ENUM , Enum );
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#undef HANDLE_TYPE
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case FieldDescriptor::CPPTYPE_MESSAGE:
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// We can recurse this!
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Message *to_element = to_reflection->AddMessage( to, field );
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if ( !ProtoBufDeltaMerge( src_reflection->GetRepeatedMessage( src, field, j ), delta_reflection->GetRepeatedMessage( delta, field, j ), to_element ) )
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return false;
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break;
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}
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}
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}
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else
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{
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switch ( field->cpp_type() )
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{
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#define HANDLE_TYPE(CPPTYPE, METHOD) \
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case FieldDescriptor::CPPTYPE_##CPPTYPE: \
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if ( delta_reflection->HasField( delta, field ) ) \
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{ \
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to_reflection->Set##METHOD( to, field, delta_reflection->Get##METHOD( delta, field ) ); \
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} \
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else \
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{ \
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if ( src_reflection->HasField( src, field ) ) \
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{ \
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to_reflection->Set##METHOD( to, field, src_reflection->Get##METHOD( delta, field ) ); \
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} \
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else \
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{ \
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to_reflection->ClearField( to, field ); \
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} \
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} \
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break;
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HANDLE_TYPE(INT32 , Int32 );
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HANDLE_TYPE(INT64 , Int64 );
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HANDLE_TYPE(UINT32, UInt32);
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HANDLE_TYPE(UINT64, UInt64);
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HANDLE_TYPE(FLOAT , Float );
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HANDLE_TYPE(DOUBLE, Double);
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HANDLE_TYPE(BOOL , Bool );
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HANDLE_TYPE(STRING, String);
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HANDLE_TYPE(ENUM , Enum );
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#undef HANDLE_TYPE
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case FieldDescriptor::CPPTYPE_MESSAGE:
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Message *to_element = to_reflection->MutableMessage( to, field );
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if ( delta_reflection->HasField( delta, field ) )
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{
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if ( !ProtoBufDeltaMerge( src_reflection->GetMessage( src, field ), delta_reflection->GetMessage( delta, field ), to_element ) )
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return false;
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}
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else
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{
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if ( src_reflection->HasField( src, field ) ) \
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{
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to_element->Clear();
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to_element->MergeFrom( src_reflection->GetMessage( src, field ) );
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}
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else
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{
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to_reflection->ClearField( to, field );
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}
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}
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break;
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}
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}
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}
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return true;
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}
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bool ProtoBufCalcDelta( const ::google::protobuf::Message &src, const ::google::protobuf::Message &dest, ::google::protobuf::Message *delta )
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{
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const Descriptor* descriptor = src.GetDescriptor();
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if ( descriptor != dest.GetDescriptor() )
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{
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Warning( "Tried to calc delta to a src message of a different type.");
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return false;
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}
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if ( descriptor != delta->GetDescriptor() )
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{
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Warning( "Tried to calc delta to a message of a different type.");
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return false;
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}
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delta->Clear();
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const Reflection* src_reflection = src.GetReflection();
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const Reflection* dest_reflection = dest.GetReflection();
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const Reflection* delta_reflection = delta->GetReflection();
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Assert( src_reflection == dest_reflection );
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Assert( src_reflection == delta_reflection );
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vector<const FieldDescriptor*> fields;
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src_reflection->ListFields(src, &fields);
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for ( size_t i = 0; i < fields.size(); i++ )
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{
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const FieldDescriptor* field = fields[i];
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// We can't really delta repeated fields, it sucks
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if ( field->is_repeated() )
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{
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int count = dest_reflection->FieldSize(dest, field);
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delta_reflection->ClearField( delta, field );
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for ( int j = 0; j < count; j++ )
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{
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switch ( field->cpp_type() )
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{
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#define HANDLE_TYPE(CPPTYPE, METHOD) \
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case FieldDescriptor::CPPTYPE_##CPPTYPE: \
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delta_reflection->Add##METHOD(delta, field, dest_reflection->GetRepeated##METHOD(dest, field, j)); \
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break;
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HANDLE_TYPE(INT32 , Int32 );
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HANDLE_TYPE(INT64 , Int64 );
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HANDLE_TYPE(UINT32, UInt32);
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HANDLE_TYPE(UINT64, UInt64);
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HANDLE_TYPE(FLOAT , Float );
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HANDLE_TYPE(DOUBLE, Double);
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HANDLE_TYPE(BOOL , Bool );
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HANDLE_TYPE(STRING, String);
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HANDLE_TYPE(ENUM , Enum );
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#undef HANDLE_TYPE
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case FieldDescriptor::CPPTYPE_MESSAGE:
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// We can recurse this!
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Message *delta_element = delta_reflection->AddMessage( delta, field );
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if ( !ProtoBufCalcDelta( src_reflection->GetRepeatedMessage( src, field, j ), dest_reflection->GetRepeatedMessage( dest, field, j ), delta_element ) )
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return false;
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break;
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}
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}
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}
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else
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{
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switch ( field->cpp_type() )
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{
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#define HANDLE_TYPE(CPPTYPE, METHOD) \
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case FieldDescriptor::CPPTYPE_##CPPTYPE: \
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if ( dest_reflection->HasField( dest, field ) ) \
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{ \
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if ( !src_reflection->HasField( src, field ) || \
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src_reflection->Get##METHOD( src, field ) != dest_reflection->Get##METHOD( dest, field ) ) \
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{ \
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delta_reflection->Set##METHOD( delta, field, dest_reflection->Get##METHOD( dest, field ) ); \
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} \
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} \
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else \
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{ \
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if ( src_reflection->HasField( src, field ) ) \
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{ \
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delta_reflection->Set##METHOD( delta, field, dest_reflection->Get##METHOD( dest, field ) ); \
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} \
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} \
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break;
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HANDLE_TYPE(INT32 , Int32 );
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HANDLE_TYPE(INT64 , Int64 );
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HANDLE_TYPE(UINT32, UInt32);
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HANDLE_TYPE(UINT64, UInt64);
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HANDLE_TYPE(FLOAT , Float );
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HANDLE_TYPE(DOUBLE, Double);
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HANDLE_TYPE(BOOL , Bool );
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HANDLE_TYPE(STRING, String);
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HANDLE_TYPE(ENUM , Enum );
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#undef HANDLE_TYPE
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case FieldDescriptor::CPPTYPE_MESSAGE:
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Message *delta_element = delta_reflection->MutableMessage( delta, field );
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if ( !ProtoBufCalcDelta( src_reflection->GetMessage( src, field ), dest_reflection->GetMessage( dest, field ), delta_element ) )
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return false;
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break;
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}
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}
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}
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return true;
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}
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*/
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