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Patches.h

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00001 #ifndef TAGCOLL_PATCHES_H 00002 #define TAGCOLL_PATCHES_H 00003 00004 /* 00005 * Classes handling tag patches 00006 * 00007 * Copyright (C) 2003 Enrico Zini <enrico@debian.org> 00008 * 00009 * This library is free software; you can redistribute it and/or 00010 * modify it under the terms of the GNU Lesser General Public 00011 * License as published by the Free Software Foundation; either 00012 * version 2.1 of the License, or (at your option) any later version. 00013 * 00014 * This library is distributed in the hope that it will be useful, 00015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 * Lesser General Public License for more details. 00018 * 00019 * You should have received a copy of the GNU Lesser General Public 00020 * License along with this library; if not, write to the Free Software 00021 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00022 */ 00023 00024 #pragma interface 00025 00026 #include <tagcoll/TagcollConsumer.h> 00027 #include <tagcoll/TagcollFilter.h> 00028 #include <tagcoll/InputMerger.h> 00029 00030 #include <map> 00031 #include <string> 00032 00033 namespace Tagcoll 00034 { 00035 00036 // List of explicit implications that can be used to expand a tagged collection 00037 // while it's being parsed 00038 template <class ITEM> 00039 class PatchList : public TagcollConsumer<ITEM, std::string> 00040 { 00041 protected: 00042 typedef std::map< ITEM, OpSet<std::string> > patch_t; 00043 patch_t patches; 00044 00045 void addAllEquals(const ITEM& item, char prefix, const OpSet<std::string>& tags) throw (); 00046 00047 public: 00048 virtual ~PatchList() throw () {} 00049 00050 void generate(const InputMerger<ITEM, std::string>& im1, const InputMerger<ITEM, std::string>& im2) throw (); 00051 00052 virtual void consume(const ITEM& item) throw () {} 00053 virtual void consume(const ITEM& item, const OpSet<std::string>& tags) throw (); 00054 00055 // Patch a tagged item: return the new set of tags 00056 OpSet<std::string> patch(const ITEM& item, const OpSet<std::string>& tagset) const throw (); 00057 00058 // Output the patch list to a TagcollConsumer 00059 void output(TagcollConsumer<ITEM, std::string>& consumer) const throw (); 00060 }; 00061 00062 template <class ITEM> 00063 class ApplyPatches : public TagcollFilter<ITEM, std::string> 00064 { 00065 protected: 00066 PatchList<ITEM>& patches; 00067 00068 public: 00069 ApplyPatches(PatchList<ITEM>& patches) throw () 00070 : patches(patches) {} 00071 00072 virtual void consume(const ITEM& item) throw (); 00073 virtual void consume(const ITEM& item, const OpSet<std::string>& tags) throw (); 00074 }; 00075 00076 }; 00077 00078 // vim:set ts=4 sw=4: 00079 #endif

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