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

/*
 * Copyright (c) 2008 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
 */

#ifndef PALUDIS_GUARD_PALUDIS_REPOSITORIES_E_DEPENDENCIES_REWRITER_HH
#define PALUDIS_GUARD_PALUDIS_REPOSITORIES_E_DEPENDENCIES_REWRITER_HH 1

#include <paludis/dep_spec.hh>
#include <paludis/dep_tree.hh>
#include <paludis/util/private_implementation_pattern.hh>

namespace paludis
{
    namespace erepository
    {
        class DependenciesRewriter :
            public ConstVisitor<DependencySpecTree>,
            private PrivateImplementationPattern<DependenciesRewriter>
        {
            public:
                DependenciesRewriter();
                ~DependenciesRewriter();

                void _add_where_necessary(const std::string &);

                void visit_leaf(const PackageDepSpec &);
                void visit_leaf(const NamedSetDepSpec &);
                void visit_leaf(const BlockDepSpec &);
                void visit_leaf(const DependencyLabelsDepSpec &);

                void visit_sequence(const AnyDepSpec &,
                        DependencySpecTree::ConstSequenceIterator,
                        DependencySpecTree::ConstSequenceIterator);

                void visit_sequence(const AllDepSpec &,
                        DependencySpecTree::ConstSequenceIterator,
                        DependencySpecTree::ConstSequenceIterator);

                void visit_sequence(const ConditionalDepSpec &,
                        DependencySpecTree::ConstSequenceIterator,
                        DependencySpecTree::ConstSequenceIterator);

                const std::string depend() const;
                const std::string rdepend() const;
                const std::string pdepend() const;
        };
    }
}

#endif