Changeset 867:994c7df296c9 in lemon for lemon/path.h
 Timestamp:
 12/10/09 17:05:35 (11 years ago)
 Branch:
 default
 Children:
 868:76689f2fc02d, 869:1b89e29c9fc7, 900:5100072d83ca
 Parents:
 865:e9c203fb003d (diff), 765:703ebf476a1d (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.  Phase:
 public
 Files:

 2 edited
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lemon/path.h
r606 r867 71 71 template <typename CPath> 72 72 Path(const CPath& cpath) { 73 copyPath(*this, cpath);73 pathCopy(cpath, *this); 74 74 } 75 75 … … 79 79 template <typename CPath> 80 80 Path& operator=(const CPath& cpath) { 81 copyPath(*this, cpath);81 pathCopy(cpath, *this); 82 82 return *this; 83 83 } … … 259 259 template <typename CPath> 260 260 SimplePath(const CPath& cpath) { 261 copyPath(*this, cpath);261 pathCopy(cpath, *this); 262 262 } 263 263 … … 268 268 template <typename CPath> 269 269 SimplePath& operator=(const CPath& cpath) { 270 copyPath(*this, cpath);270 pathCopy(cpath, *this); 271 271 return *this; 272 272 } … … 438 438 template <typename CPath> 439 439 ListPath(const CPath& cpath) : first(0), last(0) { 440 copyPath(*this, cpath);440 pathCopy(cpath, *this); 441 441 } 442 442 … … 454 454 template <typename CPath> 455 455 ListPath& operator=(const CPath& cpath) { 456 copyPath(*this, cpath);456 pathCopy(cpath, *this); 457 457 return *this; 458 458 } … … 764 764 template <typename CPath> 765 765 StaticPath(const CPath& cpath) : arcs(0) { 766 copyPath(*this, cpath);766 pathCopy(cpath, *this); 767 767 } 768 768 … … 780 780 template <typename CPath> 781 781 StaticPath& operator=(const CPath& cpath) { 782 copyPath(*this, cpath);782 pathCopy(cpath, *this); 783 783 return *this; 784 784 } … … 929 929 }; 930 930 931 template <typename Target, typename Source,932 bool buildEnable = BuildTagIndicator<T arget>::value>931 template <typename From, typename To, 932 bool buildEnable = BuildTagIndicator<To>::value> 933 933 struct PathCopySelectorForward { 934 static void copy( Target& target, const Source& source) {935 t arget.clear();936 for (typename Source::ArcIt it(source); it != INVALID; ++it) {937 t arget.addBack(it);934 static void copy(const From& from, To& to) { 935 to.clear(); 936 for (typename From::ArcIt it(from); it != INVALID; ++it) { 937 to.addBack(it); 938 938 } 939 939 } 940 940 }; 941 941 942 template <typename Target, typename Source>943 struct PathCopySelectorForward< Target, Source, true> {944 static void copy( Target& target, const Source& source) {945 t arget.clear();946 t arget.build(source);947 } 948 }; 949 950 template <typename Target, typename Source,951 bool buildEnable = BuildTagIndicator<T arget>::value>942 template <typename From, typename To> 943 struct PathCopySelectorForward<From, To, true> { 944 static void copy(const From& from, To& to) { 945 to.clear(); 946 to.build(from); 947 } 948 }; 949 950 template <typename From, typename To, 951 bool buildEnable = BuildTagIndicator<To>::value> 952 952 struct PathCopySelectorBackward { 953 static void copy( Target& target, const Source& source) {954 t arget.clear();955 for (typename Source::RevArcIt it(source); it != INVALID; ++it) {956 t arget.addFront(it);953 static void copy(const From& from, To& to) { 954 to.clear(); 955 for (typename From::RevArcIt it(from); it != INVALID; ++it) { 956 to.addFront(it); 957 957 } 958 958 } 959 959 }; 960 960 961 template <typename Target, typename Source>962 struct PathCopySelectorBackward< Target, Source, true> {963 static void copy( Target& target, const Source& source) {964 t arget.clear();965 t arget.buildRev(source);961 template <typename From, typename To> 962 struct PathCopySelectorBackward<From, To, true> { 963 static void copy(const From& from, To& to) { 964 to.clear(); 965 to.buildRev(from); 966 966 } 967 967 }; 968 968 969 969 970 template <typename Target, typename Source,971 bool revEnable = RevPathTagIndicator< Source>::value>970 template <typename From, typename To, 971 bool revEnable = RevPathTagIndicator<From>::value> 972 972 struct PathCopySelector { 973 static void copy( Target& target, const Source& source) {974 PathCopySelectorForward< Target, Source>::copy(target, source);973 static void copy(const From& from, To& to) { 974 PathCopySelectorForward<From, To>::copy(from, to); 975 975 } 976 976 }; 977 977 978 template <typename Target, typename Source>979 struct PathCopySelector< Target, Source, true> {980 static void copy( Target& target, const Source& source) {981 PathCopySelectorBackward< Target, Source>::copy(target, source);978 template <typename From, typename To> 979 struct PathCopySelector<From, To, true> { 980 static void copy(const From& from, To& to) { 981 PathCopySelectorBackward<From, To>::copy(from, to); 982 982 } 983 983 }; … … 988 988 /// \brief Make a copy of a path. 989 989 /// 990 /// This function makes a copy of a path. 991 template <typename Target, typename Source> 992 void copyPath(Target& target, const Source& source) { 993 checkConcept<concepts::PathDumper<typename Source::Digraph>, Source>(); 994 _path_bits::PathCopySelector<Target, Source>::copy(target, source); 990 /// This function makes a copy of a path. 991 template <typename From, typename To> 992 void pathCopy(const From& from, To& to) { 993 checkConcept<concepts::PathDumper<typename From::Digraph>, From>(); 994 _path_bits::PathCopySelector<From, To>::copy(from, to); 995 } 996 997 /// \brief Deprecated version of \ref pathCopy(). 998 /// 999 /// Deprecated version of \ref pathCopy() (only for reverse compatibility). 1000 template <typename To, typename From> 1001 void copyPath(To& to, const From& from) { 1002 pathCopy(from, to); 995 1003 } 996 1004 … … 1016 1024 /// \brief The source of a path 1017 1025 /// 1018 /// This function returns the source of the given path. 1026 /// This function returns the source node of the given path. 1027 /// If the path is empty, then it returns \c INVALID. 1019 1028 template <typename Digraph, typename Path> 1020 1029 typename Digraph::Node pathSource(const Digraph& digraph, const Path& path) { 1021 return digraph.source(path.front());1030 return path.empty() ? INVALID : digraph.source(path.front()); 1022 1031 } 1023 1032 1024 1033 /// \brief The target of a path 1025 1034 /// 1026 /// This function returns the target of the given path. 1035 /// This function returns the target node of the given path. 1036 /// If the path is empty, then it returns \c INVALID. 1027 1037 template <typename Digraph, typename Path> 1028 1038 typename Digraph::Node pathTarget(const Digraph& digraph, const Path& path) { 1029 return digraph.target(path.back());1039 return path.empty() ? INVALID : digraph.target(path.back()); 1030 1040 } 1031 1041 
lemon/path.h
r551 r867 3 3 * This file is a part of LEMON, a generic C++ optimization library. 4 4 * 5 * Copyright (C) 2003200 85 * Copyright (C) 20032009 6 6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport 7 7 * (Egervary Research Group on Combinatorial Optimization, EGRES). … … 41 41 /// 42 42 /// A structure for representing directed path in a digraph. 43 /// \tparam _DigraphThe digraph type in which the path is.43 /// \tparam GR The digraph type in which the path is. 44 44 /// 45 45 /// In a sense, the path can be treated as a list of arcs. The … … 53 53 /// implementation uses two vectors for storing the front and back 54 54 /// insertions. 55 template <typename _Digraph>55 template <typename GR> 56 56 class Path { 57 57 public: 58 58 59 typedef _DigraphDigraph;59 typedef GR Digraph; 60 60 typedef typename Digraph::Arc Arc; 61 61 … … 138 138 /// \brief The nth arc. 139 139 /// 140 /// \pre n is in the [0..length()  1] range140 /// \pre \c n is in the <tt>[0..length()  1]</tt> range. 141 141 const Arc& nth(int n) const { 142 142 return n < int(head.size()) ? *(head.rbegin() + n) : … … 146 146 /// \brief Initialize arc iterator to point to the nth arc 147 147 /// 148 /// \pre n is in the [0..length()  1] range148 /// \pre \c n is in the <tt>[0..length()  1]</tt> range. 149 149 ArcIt nthIt(int n) const { 150 150 return ArcIt(*this, n); … … 229 229 /// 230 230 /// A structure for representing directed path in a digraph. 231 /// \tparam _DigraphThe digraph type in which the path is.231 /// \tparam GR The digraph type in which the path is. 232 232 /// 233 233 /// In a sense, the path can be treated as a list of arcs. The … … 241 241 /// then the \c Path type because it use just one vector for the 242 242 /// arcs. 243 template <typename _Digraph>243 template <typename GR> 244 244 class SimplePath { 245 245 public: 246 246 247 typedef _DigraphDigraph;247 typedef GR Digraph; 248 248 typedef typename Digraph::Arc Arc; 249 249 … … 330 330 /// \brief The nth arc. 331 331 /// 332 /// \pre n is in the [0..length()  1] range332 /// \pre \c n is in the <tt>[0..length()  1]</tt> range. 333 333 const Arc& nth(int n) const { 334 334 return data[n]; … … 393 393 /// 394 394 /// A structure for representing directed path in a digraph. 395 /// \tparam _DigraphThe digraph type in which the path is.395 /// \tparam GR The digraph type in which the path is. 396 396 /// 397 397 /// In a sense, the path can be treated as a list of arcs. The … … 405 405 /// time. The front and back insertion and erasure is O(1) time 406 406 /// and it can be splited and spliced in O(1) time. 407 template <typename _Digraph>407 template <typename GR> 408 408 class ListPath { 409 409 public: 410 410 411 typedef _DigraphDigraph;411 typedef GR Digraph; 412 412 typedef typename Digraph::Arc Arc; 413 413 … … 508 508 /// 509 509 /// This function looks for the nth arc in O(n) time. 510 /// \pre n is in the [0..length()  1] range510 /// \pre \c n is in the <tt>[0..length()  1]</tt> range. 511 511 const Arc& nth(int n) const { 512 512 Node *node = first; … … 733 733 /// 734 734 /// A structure for representing directed path in a digraph. 735 /// \tparam _DigraphThe digraph type in which the path is.735 /// \tparam GR The digraph type in which the path is. 736 736 /// 737 737 /// In a sense, the path can be treated as a list of arcs. The … … 747 747 /// it is intented to be 748 748 /// used when you want to store a large number of paths. 749 template <typename _Digraph>749 template <typename GR> 750 750 class StaticPath { 751 751 public: 752 752 753 typedef _DigraphDigraph;753 typedef GR Digraph; 754 754 typedef typename Digraph::Arc Arc; 755 755 … … 834 834 /// \brief The nth arc. 835 835 /// 836 /// \pre n is in the [0..length()  1] range836 /// \pre \c n is in the <tt>[0..length()  1]</tt> range. 837 837 const Arc& nth(int n) const { 838 838 return arcs[n];
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