/*
 * Copyright (C) 2007-2023 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;
}

