/*
 * Copyright (C) 2007-2012 Xagasoft, All rights reserved.
 *
 * This file is part of the libbu++ library and is released under the
 * terms of the license contained in the file LICENSE.
 */

#include "bu/variant.h"
#include "bu/formatter.h"
#include "bu/membuf.h"

namespace Bu
{
	Formatter &operator<<( Formatter &f, const String &s );
};

Bu::VariantTypeRoot::VariantTypeRoot()
{
}

Bu::VariantTypeRoot::~VariantTypeRoot()
{
}

Bu::Variant::Variant() :
	pCore( NULL )
{
}

Bu::Variant::Variant( const Variant &v ) :
	pCore( NULL )
{
	if( v.pCore )
	{
		pCore = v.pCore->clone();
	}
}

Bu::Variant::Variant( const char *t ) :
	pCore( NULL )
{
	set( Bu::String( t ) );
}

Bu::Variant::~Variant()
{
	if( pCore )
	{
		delete pCore;
		pCore = NULL;
	}
}

Bu::String Bu::Variant::toString() const
{
	if( getType() == typeid( Bu::String ) )
	{
		return get<Bu::String>();
	}
	else
	{
		Bu::MemBuf mb;
		Bu::Formatter f( mb );
		f << *this;
		return mb.getString();
	}
}

bool Bu::Variant::isSet() const
{
	return pCore != NULL;
}

const std::type_info &Bu::Variant::getType() const
{
	if( !pCore )
	{
		throw Bu::ExceptionBase("No data!");
	}
	return pCore->getType();
}

Bu::Variant &Bu::Variant::operator=( const Bu::Variant &rhs )
{
	if( pCore )
	{
		delete pCore;
		pCore = NULL;
	}
	if( rhs.pCore )
	{
		pCore = rhs.pCore->clone();
	}

	return *this;
}

Bu::Formatter &Bu::operator<<( Bu::Formatter &f, const Bu::Variant &v )
{
	if( !v.pCore )
		return f << "(null)";

	v.pCore->format( f );
	return f;
}