src/TextOutputBuilder.cpp

Go to the documentation of this file.

/* dlvhex -- Answer-Set Programming with external interfaces.
 * Copyright (C) 2005-2007 Roman Schindlauer
 * Copyright (C) 2006-2015 Thomas Krennwallner
 * Copyright (C) 2009-2016 Peter Schüller
 * Copyright (C) 2011-2016 Christoph Redl
 * Copyright (C) 2015-2016 Tobias Kaminski
 * Copyright (C) 2015-2016 Antonius Weinzierl
 *
 * This file is part of dlvhex.
 *
 * dlvhex is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * dlvhex is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with dlvhex; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif                           // HAVE_CONFIG_H

#include "dlvhex2/TextOutputBuilder.h"
#include "dlvhex2/PrintVisitor.h"
#include "dlvhex2/globals.h"
#include "dlvhex2/ResultContainer.h"

#include <iostream>

DLVHEX_NAMESPACE_BEGIN

TextOutputBuilder::TextOutputBuilder()
{ }

TextOutputBuilder::~TextOutputBuilder()
{ }

void
TextOutputBuilder::buildResult(std::ostream& stream, const ResultContainer& facts)
{
    const ResultContainer::result_t& results = facts.getAnswerSets();

    if (!Globals::Instance()->getOption("Silent")) {
        stream << std::endl;
    }

    if (results.empty()) {
        return;
    }

    if (((*results.begin())->hasWeights()) && !Globals::Instance()->getOption("AllModels")) {
        stream << "Best model: ";
    }

    for (ResultContainer::result_t::const_iterator rit = results.begin(); rit != results.end(); ++rit) {
        RawPrintVisitor rpv(stream);
        (*rit)->accept(rpv);
        stream << std::endl;

        if ((*rit)->hasWeights()) {
            stream << "Cost ([Weight:Level]): <";

            //
            // Display all weight values up to the highest specified level
            //
            for (unsigned lev = 1; lev <= AnswerSet::getMaxLevel(); ++lev) {
                if (lev > 1)
                    stream << ",";

                stream << "[" << (*rit)->getWeight(lev) << ":" << lev << "]";
            }

            stream << ">" << std::endl;
        }

        //
        // empty line
        //
        if (!Globals::Instance()->getOption("Silent")) {
            stream << std::endl;
        }
    }
}


DLVHEX_NAMESPACE_END



// vim:expandtab:ts=4:sw=4:
// mode: C++
// End: