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/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2005, 2006, 2007, 2008, 2010, 2011 Ciaran McCreesh
 *
 * This file is part of the Paludis package manager. Paludis is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * Paludis 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 General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "dep_list_exceptions.hh"
#include <paludis/util/set.hh>
#include <paludis/util/wrapped_forward_iterator.hh>

using namespace paludis;

DepListError::DepListError(const std::string & m) throw () :
    Exception(m)
{
}

AllMaskedError::AllMaskedError(const PackageDepSpec & q, const std::shared_ptr<const PackageID> & i) throw () :
    DepListError("Error searching for '" + stringify(q) + "': no available versions"),
    _query(q),
    _from_id(i)
{
}

AdditionalRequirementsNotMetError::AdditionalRequirementsNotMetError(const PackageDepSpec & q,
        const std::shared_ptr<const PackageID> & i) throw () :
    DepListError("Error searching for '" + stringify(q) + "': additional requirements are not met on '" + stringify(*i) + "'"),
    _query(q),
    _id(i)
{
}

AdditionalRequirementsNotMetError::~AdditionalRequirementsNotMetError() throw ()
{
}

BlockError::BlockError(const std::string & msg) throw () :
    DepListError("Block: " + msg)
{
}

CircularDependencyError::CircularDependencyError(const std::string & msg) throw () :
    DepListError("Circular dependency: " + msg)
{
}

DowngradeNotAllowedError::DowngradeNotAllowedError(const std::string & to, const std::string & from) throw () :
    DepListError("Downgrade to '" + to + "' from '" + from + "' forbidden")
{
}

DowngradeNotAllowedError::~DowngradeNotAllowedError() throw ()
{
}

namespace
{
    std::string
    destinations_to_string(std::shared_ptr<const DestinationsSet> dd)
    {
        std::string result;
        bool need_comma(false);
        for (DestinationsSet::ConstIterator d(dd->begin()), d_end(dd->end()) ;
                d != d_end ; ++d)
        {
            if (need_comma)
                result.append(", ");
            need_comma = true;

            result.append(stringify((*d)->name()));
        }
        return result;
    }
}

NoDestinationError::NoDestinationError(const std::shared_ptr<const PackageID> & p,
        const std::shared_ptr<const DestinationsSet> & d) throw () :
    DepListError("No suitable destination for '" + stringify(*p) + "' in (" +
            destinations_to_string(d) + ")")
{
}