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MessagePack.cpp
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MessagePack.cpp
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#include "FoundationPch.h"
#include "Foundation/MessagePack.h"
using namespace Helium;
//
// Writer
//
void MessagePackWriter::WriteNil()
{
stream->Write< uint8_t >( MessagePackTypes::Nil );
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( bool value )
{
stream->Write< uint8_t >( value ? MessagePackTypes::True : MessagePackTypes::False );
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( float32_t value )
{
stream->Write< uint8_t >( MessagePackTypes::Float32 );
#if HELIUM_ENDIAN_LITTLE
stream->Write< uint32_t >( ConvertEndianFloatToU32( value ) );
#else
stream->Write< float32_t >( value );
#endif
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( float64_t value )
{
stream->Write< uint8_t >( MessagePackTypes::Float64 );
#if HELIUM_ENDIAN_LITTLE
stream->Write< uint64_t >( ConvertEndianDoubleToU64( value ) );
#else
stream->Write< float64_t >( value );
#endif
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( uint8_t value )
{
if ( value <= MessagePackMasks::FixNumPositiveValue )
{
stream->Write< uint8_t >( value );
}
else
{
stream->Write< uint8_t >( MessagePackTypes::UInt8 );
stream->Write< uint8_t >( value );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( uint16_t value )
{
if ( value <= MessagePackMasks::FixNumPositiveValue )
{
stream->Write< uint8_t >( static_cast< uint8_t >( value ) );
}
else if ( value <= NumericLimits< uint8_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::UInt8 );
stream->Write< uint8_t >( static_cast< uint8_t >( value ) );
}
else
{
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
stream->Write< uint8_t >( MessagePackTypes::UInt16 );
stream->Write< uint16_t >( value );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( uint32_t value )
{
if ( value <= MessagePackMasks::FixNumPositiveValue )
{
stream->Write< uint8_t >( static_cast< uint8_t >( value ) );
}
else if ( value <= NumericLimits< uint8_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::UInt8 );
stream->Write< uint8_t >( static_cast< uint8_t >( value ) );
}
else if ( value <= NumericLimits< uint16_t >::Maximum )
{
uint16_t temp = static_cast< uint16_t >( value );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::UInt16 );
stream->Write< uint16_t >( temp );
}
else
{
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
stream->Write< uint8_t >( MessagePackTypes::UInt32 );
stream->Write< uint32_t >( value );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( uint64_t value )
{
if ( value <= MessagePackMasks::FixNumPositiveValue )
{
stream->Write< uint8_t >( static_cast< uint8_t >( value ) );
}
else if ( value <= NumericLimits< uint8_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::UInt8 );
stream->Write< uint8_t >( static_cast< uint8_t >( value ) );
}
else if ( value <= NumericLimits< uint16_t >::Maximum )
{
uint16_t temp = static_cast< uint16_t >( value );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::UInt16 );
stream->Write< uint16_t >( temp );
}
else if ( value <= NumericLimits< uint32_t >::Maximum )
{
uint32_t temp = static_cast< uint32_t >( value );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::UInt32 );
stream->Write< uint32_t >( temp );
}
else
{
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
stream->Write< uint8_t >( MessagePackTypes::UInt64 );
stream->Write< uint64_t >( value );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( int8_t value )
{
if ( value >= 0 )
{
stream->Write< int8_t >( value );
}
else if ( value < 0 && value >= -32 )
{
stream->Write< int8_t >( value );
}
else
{
stream->Write< uint8_t >( MessagePackTypes::Int8 );
stream->Write< int8_t >( value );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( int16_t value )
{
if ( value >= 0 && value <= MessagePackMasks::FixNumPositiveValue )
{
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value < 0 && value >= -32 )
{
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value >= NumericLimits< int8_t >::Minimum && value <= NumericLimits< int8_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::Int8 );
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else
{
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
stream->Write< uint8_t >( MessagePackTypes::Int16 );
stream->Write< int16_t >( value );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( int32_t value )
{
if ( value >= 0 && value <= MessagePackMasks::FixNumPositiveValue )
{
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value < 0 && value >= -32 )
{
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value >= NumericLimits< int8_t >::Minimum && value <= NumericLimits< int8_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::Int8 );
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value >= NumericLimits< int16_t >::Minimum && value <= NumericLimits< int16_t >::Maximum )
{
int16_t temp = static_cast< int16_t >( value );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Int16 );
stream->Write< int16_t >( temp );
}
else
{
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
stream->Write< uint8_t >( MessagePackTypes::Int32 );
stream->Write< int32_t >( value );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( int64_t value )
{
if ( value >= 0 && value <= MessagePackMasks::FixNumPositiveValue )
{
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value < 0 && value >= -32 )
{
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value >= NumericLimits< int8_t >::Minimum && value <= NumericLimits< int8_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::Int8 );
stream->Write< int8_t >( static_cast< int8_t >( value ) );
}
else if ( value >= NumericLimits< int16_t >::Minimum && value <= NumericLimits< int16_t >::Maximum )
{
int16_t temp = static_cast< int16_t >( value );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Int16 );
stream->Write< int16_t >( temp );
}
else if ( value >= NumericLimits< int32_t >::Minimum && value <= NumericLimits< int32_t >::Maximum )
{
int32_t temp = static_cast< int32_t >( value );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Int32 );
stream->Write< int32_t >( temp );
}
else
{
int64_t temp = value;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Int64 );
stream->Write< int64_t >( temp );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::Write( const char* str )
{
size_t length = StringLength( str );
WriteRaw( str, static_cast< uint32_t >( length ) );
}
void MessagePackWriter::WriteRaw( const void* bytes, uint32_t length )
{
if ( length <= 31 )
{
stream->Write< uint8_t >( MessagePackTypes::FixRaw | static_cast< uint8_t >( length ) );
stream->Write( bytes, length, 1 );
}
else if ( length <= 65535 )
{
uint16_t temp = length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Raw16 );
stream->Write< uint16_t >( temp );
stream->Write( bytes, length, 1 );
}
else
{
uint32_t temp = length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( length );
#endif
stream->Write< uint8_t >( MessagePackTypes::Raw32 );
stream->Write< uint32_t >( temp );
stream->Write( bytes, length, 1 );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::BeginArray( uint32_t length )
{
ContainerState state;
state.container = MessagePackContainers::Array;
state.length = length;
if ( length == NumericLimits< uint32_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::Array32 );
state.lengthOffset = stream->Tell();
stream->Write< uint32_t >( length );
}
else
{
state.lengthOffset = Invalid< int64_t >();
if ( length <= 15 )
{
stream->Write< uint8_t >( MessagePackTypes::FixArray | static_cast< uint8_t >( length ) );
}
else if ( length <= 65535 )
{
uint16_t temp = length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Array16 );
stream->Write< uint16_t >( temp );
}
else
{
uint32_t temp = length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Array32 );
stream->Write< uint32_t >( temp );
}
}
containerState.Push( state );
}
void MessagePackWriter::EndArray()
{
ContainerState state = containerState.Pop();
if ( state.container == MessagePackContainers::Array )
{
if ( state.lengthOffset != Invalid< int64_t >() )
{
stream->Seek( state.lengthOffset, SeekOrigins::Begin );
uint32_t temp = NumericLimits< uint32_t >::Maximum - state.length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint32_t >( temp );
stream->Seek( 0, SeekOrigins::End );
}
else
{
if ( state.length != 0 )
{
throw Helium::Exception( "Incorrent number of objects written into array, off by %d", state.length );
}
}
}
else
{
throw Helium::Exception( "Mismatched container Begin/End for array" );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
void MessagePackWriter::BeginMap( uint32_t length )
{
ContainerState state;
state.container = MessagePackContainers::Map;
state.length = length;
if ( length == NumericLimits< uint32_t >::Maximum )
{
stream->Write< uint8_t >( MessagePackTypes::Map32 );
state.lengthOffset = stream->Tell();
stream->Write< uint32_t >( length );
}
else
{
state.lengthOffset = Invalid< int64_t >();
if ( length <= 15 )
{
stream->Write< uint8_t >( MessagePackTypes::FixMap | static_cast< uint8_t >( length ) );
}
else if ( length <= 65535 )
{
uint16_t temp = length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Array16 );
stream->Write< uint16_t >( temp );
}
else
{
uint32_t temp = length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint8_t >( MessagePackTypes::Array32 );
stream->Write< uint32_t >( temp );
}
// our state is going to bookkeep the number written, but we need to write TWICE as many due to key+value
state.length *= 2;
}
containerState.Push( state );
}
void MessagePackWriter::EndMap()
{
ContainerState state = containerState.Pop();
if ( state.container == MessagePackContainers::Map )
{
if ( state.lengthOffset != Invalid< int64_t >() )
{
stream->Seek( state.lengthOffset, SeekOrigins::Begin );
uint32_t temp = NumericLimits< uint32_t >::Maximum - state.length;
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
stream->Write< uint32_t >( temp );
stream->Seek( 0, SeekOrigins::End );
}
else
{
if ( state.length != 0 )
{
throw Helium::Exception( "Incorrent number of objects written into map, off by %d", state.length );
}
}
}
else
{
throw Helium::Exception( "Mismatched container Begin/End for map" );
}
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
//
// Reader
//
void MessagePackReader::Skip()
{
uint32_t length = 0x0;
if ( ( type & MessagePackMasks::FixNumPositiveType ) != MessagePackTypes::FixNumPositive
&& ( type & MessagePackMasks::FixNumNegativeType ) != MessagePackTypes::FixNumNegative
&& type != MessagePackTypes::Nil
&& type != MessagePackTypes::False
&& type != MessagePackTypes::True )
{
if ( ( type & MessagePackMasks::FixRawType ) == MessagePackTypes::FixRaw )
{
length = type & MessagePackMasks::FixRawCount;
}
else
{
if ( ( type & MessagePackMasks::FixArrayType ) == MessagePackTypes::FixArray )
{
uint32_t count = type & MessagePackMasks::FixArrayCount;
for ( uint32_t i=0; i<count; ++i )
{
Advance();
Skip();
}
}
else
{
if ( ( type & MessagePackMasks::FixMapType ) == MessagePackTypes::FixMap )
{
uint32_t count = type & MessagePackMasks::FixMapCount;
for ( uint32_t i=0; i<count; ++i )
{
Advance();
Skip();
Advance();
Skip();
}
}
else
{
switch ( type )
{
case MessagePackTypes::UInt8:
case MessagePackTypes::Int8:
length = 1;
break;
case MessagePackTypes::UInt16:
case MessagePackTypes::Int16:
length = 2;
break;
case MessagePackTypes::Float32:
case MessagePackTypes::UInt32:
case MessagePackTypes::Int32:
length = 4;
break;
case MessagePackTypes::Float64:
case MessagePackTypes::UInt64:
case MessagePackTypes::Int64:
length = 8;
break;
case MessagePackTypes::Raw16:
case MessagePackTypes::Raw32:
length = ReadRawLength();
break;
case MessagePackTypes::Array16:
case MessagePackTypes::Array32:
{
uint32_t arrayLength = ReadArrayLength();
for ( uint32_t i=0; i<arrayLength; ++i )
{
Advance();
Skip();
}
}
case MessagePackTypes::Map16:
case MessagePackTypes::Map32:
{
uint32_t mapLength = ReadMapLength();
for ( uint32_t i=0; i<mapLength; ++i )
{
Advance();
Skip();
Advance();
Skip();
}
}
}
}
}
}
}
if ( length )
{
stream->Seek( length, SeekOrigins::Current );
}
Advance();
}
void MessagePackReader::Read( bool& value, bool* succeeded )
{
bool result = false;
switch ( type )
{
case MessagePackTypes::True:
{
value = true;
result = true;
break;
}
case MessagePackTypes::False:
{
value = false;
result = true;
break;
}
}
if ( result )
{
Advance();
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
if ( succeeded )
{
*succeeded = result;
}
else if ( !result )
{
throw Helium::Exception( "Type mismatch on unhandled Read" );
}
}
void MessagePackReader::Read( float32_t& value, bool* succeeded )
{
bool result = false;
if ( type == MessagePackTypes::Float32 )
{
#if HELIUM_ENDIAN_LITTLE
uint32_t temp = 0x0;
stream->Read< uint32_t >( temp );
value = ConvertEndianU32ToFloat( temp );
#else
stream->Read< float32_t >( value );
#endif
result = true;
}
if ( result )
{
Advance();
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
if ( succeeded )
{
*succeeded = result;
}
else if ( !result )
{
throw Helium::Exception( "Type mismatch on unhandled Read" );
}
}
void MessagePackReader::Read( float64_t& value, bool* succeeded )
{
bool result = false;
switch ( type )
{
case MessagePackTypes::Float32:
{
#if HELIUM_ENDIAN_LITTLE
uint32_t temp = 0x0;
stream->Read< uint32_t >( temp );
value = ConvertEndianU32ToFloat( temp );
#else
stream->Read< float32_t >( value );
#endif
result = true;
break;
}
case MessagePackTypes::Float64:
{
#if HELIUM_ENDIAN_LITTLE
uint64_t temp = 0x0;
stream->Read< uint64_t >( temp );
value = ConvertEndianU64ToDouble( temp );
#else
stream->Read< float64_t >( value );
#endif
result = true;
break;
}
}
if ( result )
{
Advance();
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
if ( succeeded )
{
*succeeded = result;
}
else if ( !result )
{
throw Helium::Exception( "Type mismatch on unhandled Read" );
}
}
void MessagePackReader::Read( uint8_t& value, bool* succeeded )
{
bool result = false;
if ( ( type & MessagePackMasks::FixNumPositiveType ) == MessagePackTypes::FixNumPositive )
{
value = type;
result = true;
}
else
{
if ( type == MessagePackTypes::UInt8 )
{
stream->Read< uint8_t >( value );
result = true;
}
}
if ( result )
{
Advance();
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
if ( succeeded )
{
*succeeded = result;
}
else if ( !result )
{
throw Helium::Exception( "Type mismatch on unhandled Read" );
}
}
void MessagePackReader::Read( uint16_t& value, bool* succeeded )
{
bool result = false;
if ( ( type & MessagePackMasks::FixNumPositiveType ) == MessagePackTypes::FixNumNegative )
{
value = type;
result = true;
}
else
{
switch ( type )
{
case MessagePackTypes::UInt8:
{
uint8_t temp;
stream->Read< uint8_t >( temp );
value = temp;
result = true;
break;
}
case MessagePackTypes::UInt16:
{
stream->Read< uint16_t >( value );
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
result = true;
break;
}
}
}
if ( result )
{
Advance();
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
if ( succeeded )
{
*succeeded = result;
}
else if ( !result )
{
throw Helium::Exception( "Type mismatch on unhandled Read" );
}
}
void MessagePackReader::Read( uint32_t& value, bool* succeeded )
{
bool result = false;
if ( ( type & MessagePackMasks::FixNumPositiveType ) == MessagePackTypes::FixNumPositive )
{
value = type;
result = true;
}
else
{
switch ( type )
{
case MessagePackTypes::UInt8:
{
uint8_t temp;
stream->Read< uint8_t >( temp );
value = temp;
result = true;
break;
}
case MessagePackTypes::UInt16:
{
uint16_t temp;
stream->Read< uint16_t >( temp );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
value = temp;
result = true;
break;
}
case MessagePackTypes::UInt32:
{
stream->Read< uint32_t >( value );
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
result = true;
break;
}
}
}
if ( result )
{
Advance();
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
if ( succeeded )
{
*succeeded = result;
}
else if ( !result )
{
throw Helium::Exception( "Type mismatch on unhandled Read" );
}
}
void MessagePackReader::Read( uint64_t& value, bool* succeeded )
{
bool result = false;
if ( ( type & MessagePackMasks::FixNumPositiveType ) == MessagePackTypes::FixNumPositive )
{
value = type;
result = true;
}
else
{
switch ( type )
{
case MessagePackTypes::UInt8:
{
uint8_t temp;
stream->Read< uint8_t >( temp );
value = temp;
result = true;
break;
}
case MessagePackTypes::UInt16:
{
uint16_t temp;
stream->Read< uint16_t >( temp );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
value = temp;
result = true;
break;
}
case MessagePackTypes::UInt32:
{
uint32_t temp;
stream->Read< uint32_t >( temp );
#if HELIUM_ENDIAN_LITTLE
temp = ConvertEndian( temp );
#endif
value = temp;
result = true;
break;
}
case MessagePackTypes::UInt64:
{
stream->Read< uint64_t >( value );
#if HELIUM_ENDIAN_LITTLE
value = ConvertEndian( value );
#endif
result = true;
break;
}
}
}
if ( result )
{
Advance();
if ( !containerState.IsEmpty() )
{
containerState.GetLast().length--;
}
}
if ( succeeded )
{
*succeeded = result;
}
else if ( !result )
{