range_rewriter.hh

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00001 /* vim: set sw=4 sts=4 et foldmethod=syntax : */
00002 
00003 /*
00004  * Copyright (c) 2007, 2008 Ciaran McCreesh
00005  *
00006  * This file is part of the Paludis package manager. Paludis is free software;
00007  * you can redistribute it and/or modify it under the terms of the GNU General
00008  * Public License version 2, as published by the Free Software Foundation.
00009  *
00010  * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
00011  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00012  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
00013  * details.
00014  *
00015  * You should have received a copy of the GNU General Public License along with
00016  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
00017  * Place, Suite 330, Boston, MA  02111-1307  USA
00018  */
00019 
00020 #ifndef PALUDIS_GUARD_PALUDIS_RANGE_REWRITER_HH
00021 #define PALUDIS_GUARD_PALUDIS_RANGE_REWRITER_HH 1
00022 
00023 #include <paludis/spec_tree.hh>
00024 #include <paludis/util/private_implementation_pattern.hh>
00025 
00026 /** \file
00027  * Declarations for RangeRewriter, which is used internally by Deplist.
00028  *
00029  * \ingroup g_dep_list
00030  *
00031  * \section Examples
00032  *
00033  * - None at this time.
00034  */
00035 
00036 namespace paludis
00037 {
00038     /**
00039      * Rewrite a DepSpec heirarchy to replace AllDepSpec and AnyDepSpec
00040      * collections of PackageDepSpec with a single PackageDepSpec using ranged
00041      * dependencies.
00042      *
00043      * \ingroup g_dep_list
00044      * \nosubgrouping
00045      */
00046     class PALUDIS_VISIBLE RangeRewriter :
00047         private PrivateImplementationPattern<RangeRewriter>
00048     {
00049         public:
00050             ///\name Basic operations
00051             ///\{
00052 
00053             RangeRewriter();
00054             virtual ~RangeRewriter();
00055 
00056             ///\}
00057 
00058             /**
00059              * Our rewritten spec, or a zero pointer if we couldn't do any
00060              * rewriting.
00061              */
00062             std::tr1::shared_ptr<PackageDepSpec> spec() const;
00063 
00064             ///\name Visit methods
00065             ///\{
00066 
00067             void visit(const DependencySpecTree::NodeType<AnyDepSpec>::Type & node);
00068             void visit(const DependencySpecTree::NodeType<AllDepSpec>::Type & node);
00069             void visit(const DependencySpecTree::NodeType<ConditionalDepSpec>::Type & node);
00070             void visit(const DependencySpecTree::NodeType<PackageDepSpec>::Type & node);
00071             void visit(const DependencySpecTree::NodeType<BlockDepSpec>::Type & node);
00072             void visit(const DependencySpecTree::NodeType<DependencyLabelsDepSpec>::Type & node);
00073             void visit(const DependencySpecTree::NodeType<NamedSetDepSpec>::Type & node);
00074 
00075             ///\}
00076     };
00077 }
00078 
00079 #endif

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