/******************************************************************************/
/* BINARY READER/WRITER FOR STREAMS - INLINE CODE *****************************/
/******************************************************************************/

#pragma once
#include <lw/lib/BinaryStreams.hh>
namespace lw {


/*= T_BinaryReader ===========================================================*/

inline T_BinaryReader::T_BinaryReader( A_InputStream& stream , E_Endian endian ) noexcept
	: stream_( stream ) , endian_( endian )
{ }

inline A_InputStream& T_BinaryReader::stream( ) const
{
	return stream_;
}

inline E_Endian T_BinaryReader::endian( ) const
{
	return endian_;
}

/*----------------------------------------------------------------------------*/

template< typename T >
inline T T_BinaryReader::readNumericNative( ) const
{
	static_assert( std::is_integral< T >( ) || std::is_floating_point< T >( ) ,
		      "numeric type expected" );
	T value = 0;
	auto r = stream_.read( &value , sizeof( T ) );
	if ( r != sizeof( T ) ) {
		throw X_StreamError( E_StreamError::BAD_DATA );
	}
	return value;
}

template< typename T >
inline T T_BinaryReader::readNumericLittleEndian( ) const
{
	return T_LittleEndian< T >::convert( readNumericNative< T >( ) );
}

template< typename T >
inline T T_BinaryReader::readNumericBigEndian( ) const
{
	return T_BigEndian< T >::convert( readNumericNative< T >( ) );
}

template< typename T >
inline T T_BinaryReader::read( ) const
{
	return T_Reader_< T >::read( *this );
}

/*----------------------------------------------------------------------------*/

template< typename T >
inline T T_BinaryReader::T_Reader_< T , true >::read( T_BinaryReader const& reader )
{
	if ( reader.endian_ == E_Endian::BIG ) {
		return reader.readNumericBigEndian< T >( );
	} else {
		return reader.readNumericLittleEndian< T >( );
	}
}

template< typename T >
inline T T_BinaryReader::T_Reader_< T , false >::read( T_BinaryReader const& reader )
{
	typedef T_ObjectReader< T > Reader;
	return Reader::read( reader );
}


/*= T_BinaryWriter ===========================================================*/

inline T_BinaryWriter::T_BinaryWriter( A_OutputStream& stream , E_Endian endian ) noexcept
	: stream_( stream ) , endian_( endian )
{ }

/*----------------------------------------------------------------------------*/

inline A_OutputStream& T_BinaryWriter::stream( ) const
{
	return stream_;
}

inline E_Endian T_BinaryWriter::endian( ) const
{
	return endian_;
}

/*----------------------------------------------------------------------------*/

template< typename T >
inline void T_BinaryWriter::writeNumericNative( T value ) const
{
	static_assert( std::is_integral< T >( ) || std::is_floating_point< T >( ) ,
		      "numeric type expected" );
	stream_.write( &value , sizeof( T ) );
}

template< typename T >
inline void T_BinaryWriter::writeNumericLittleEndian( T const& value ) const
{
	writeNumericNative( T_LittleEndian< T >::convert( value ) );
}

template< typename T >
inline void T_BinaryWriter::writeNumericBigEndian( T const& value ) const
{
	writeNumericNative( T_BigEndian< T >::convert( value ) );
}

template< typename T >
inline void T_BinaryWriter::write( T const& value ) const
{
	T_Writer_< T >::write( *this , value );
}

/*----------------------------------------------------------------------------*/

template< typename T >
inline void T_BinaryWriter::T_Writer_< T , true >::write( T_BinaryWriter const& writer , T value )
{
	if ( writer.endian_ == E_Endian::BIG ) {
		writer.writeNumericBigEndian( value );
	} else {
		writer.writeNumericLittleEndian( value );
	}
}

template< typename T >
inline void T_BinaryWriter::T_Writer_< T , false >::write( T_BinaryWriter const& writer , T const& value )
{
	typedef T_ObjectWriter< T > Writer;
	Writer::write( writer , value );
}


} // namespace