lemon/maps.h
changeset 802 994c7df296c9
parent 584 33c6b6e755cd
child 684 7b1a6e963018
child 693 7bda7860e0a8
child 716 f47b6c94577e
     1.1 --- a/lemon/maps.h	Fri Nov 13 12:33:33 2009 +0100
     1.2 +++ b/lemon/maps.h	Thu Dec 10 17:05:35 2009 +0100
     1.3 @@ -2,7 +2,7 @@
     1.4   *
     1.5   * This file is a part of LEMON, a generic C++ optimization library.
     1.6   *
     1.7 - * Copyright (C) 2003-2008
     1.8 + * Copyright (C) 2003-2009
     1.9   * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
    1.10   * (Egervary Research Group on Combinatorial Optimization, EGRES).
    1.11   *
    1.12 @@ -63,9 +63,10 @@
    1.13    template<typename K, typename V>
    1.14    class NullMap : public MapBase<K, V> {
    1.15    public:
    1.16 -    typedef MapBase<K, V> Parent;
    1.17 -    typedef typename Parent::Key Key;
    1.18 -    typedef typename Parent::Value Value;
    1.19 +    ///\e
    1.20 +    typedef K Key;
    1.21 +    ///\e
    1.22 +    typedef V Value;
    1.23  
    1.24      /// Gives back a default constructed element.
    1.25      Value operator[](const Key&) const { return Value(); }
    1.26 @@ -102,9 +103,10 @@
    1.27    private:
    1.28      V _value;
    1.29    public:
    1.30 -    typedef MapBase<K, V> Parent;
    1.31 -    typedef typename Parent::Key Key;
    1.32 -    typedef typename Parent::Value Value;
    1.33 +    ///\e
    1.34 +    typedef K Key;
    1.35 +    ///\e
    1.36 +    typedef V Value;
    1.37  
    1.38      /// Default constructor
    1.39  
    1.40 @@ -168,9 +170,10 @@
    1.41    template<typename K, typename V, V v>
    1.42    class ConstMap<K, Const<V, v> > : public MapBase<K, V> {
    1.43    public:
    1.44 -    typedef MapBase<K, V> Parent;
    1.45 -    typedef typename Parent::Key Key;
    1.46 -    typedef typename Parent::Value Value;
    1.47 +    ///\e
    1.48 +    typedef K Key;
    1.49 +    ///\e
    1.50 +    typedef V Value;
    1.51  
    1.52      /// Constructor.
    1.53      ConstMap() {}
    1.54 @@ -202,9 +205,10 @@
    1.55    template <typename T>
    1.56    class IdentityMap : public MapBase<T, T> {
    1.57    public:
    1.58 -    typedef MapBase<T, T> Parent;
    1.59 -    typedef typename Parent::Key Key;
    1.60 -    typedef typename Parent::Value Value;
    1.61 +    ///\e
    1.62 +    typedef T Key;
    1.63 +    ///\e
    1.64 +    typedef T Value;
    1.65  
    1.66      /// Gives back the given value without any modification.
    1.67      Value operator[](const Key &k) const {
    1.68 @@ -245,11 +249,10 @@
    1.69  
    1.70    public:
    1.71  
    1.72 -    typedef MapBase<int, V> Parent;
    1.73      /// Key type
    1.74 -    typedef typename Parent::Key Key;
    1.75 +    typedef int Key;
    1.76      /// Value type
    1.77 -    typedef typename Parent::Value Value;
    1.78 +    typedef V Value;
    1.79      /// Reference type
    1.80      typedef typename Vector::reference Reference;
    1.81      /// Const reference type
    1.82 @@ -353,17 +356,16 @@
    1.83    ///
    1.84    /// The simplest way of using this map is through the sparseMap()
    1.85    /// function.
    1.86 -  template <typename K, typename V, typename Compare = std::less<K> >
    1.87 +  template <typename K, typename V, typename Comp = std::less<K> >
    1.88    class SparseMap : public MapBase<K, V> {
    1.89      template <typename K1, typename V1, typename C1>
    1.90      friend class SparseMap;
    1.91    public:
    1.92  
    1.93 -    typedef MapBase<K, V> Parent;
    1.94      /// Key type
    1.95 -    typedef typename Parent::Key Key;
    1.96 +    typedef K Key;
    1.97      /// Value type
    1.98 -    typedef typename Parent::Value Value;
    1.99 +    typedef V Value;
   1.100      /// Reference type
   1.101      typedef Value& Reference;
   1.102      /// Const reference type
   1.103 @@ -373,7 +375,7 @@
   1.104  
   1.105    private:
   1.106  
   1.107 -    typedef std::map<K, V, Compare> Map;
   1.108 +    typedef std::map<K, V, Comp> Map;
   1.109      Map _map;
   1.110      Value _value;
   1.111  
   1.112 @@ -489,14 +491,15 @@
   1.113      const M1 &_m1;
   1.114      const M2 &_m2;
   1.115    public:
   1.116 -    typedef MapBase<typename M2::Key, typename M1::Value> Parent;
   1.117 -    typedef typename Parent::Key Key;
   1.118 -    typedef typename Parent::Value Value;
   1.119 +    ///\e
   1.120 +    typedef typename M2::Key Key;
   1.121 +    ///\e
   1.122 +    typedef typename M1::Value Value;
   1.123  
   1.124      /// Constructor
   1.125      ComposeMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
   1.126  
   1.127 -    /// \e
   1.128 +    ///\e
   1.129      typename MapTraits<M1>::ConstReturnValue
   1.130      operator[](const Key &k) const { return _m1[_m2[k]]; }
   1.131    };
   1.132 @@ -545,14 +548,15 @@
   1.133      const M2 &_m2;
   1.134      F _f;
   1.135    public:
   1.136 -    typedef MapBase<typename M1::Key, V> Parent;
   1.137 -    typedef typename Parent::Key Key;
   1.138 -    typedef typename Parent::Value Value;
   1.139 +    ///\e
   1.140 +    typedef typename M1::Key Key;
   1.141 +    ///\e
   1.142 +    typedef V Value;
   1.143  
   1.144      /// Constructor
   1.145      CombineMap(const M1 &m1, const M2 &m2, const F &f = F())
   1.146        : _m1(m1), _m2(m2), _f(f) {}
   1.147 -    /// \e
   1.148 +    ///\e
   1.149      Value operator[](const Key &k) const { return _f(_m1[k],_m2[k]); }
   1.150    };
   1.151  
   1.152 @@ -615,13 +619,14 @@
   1.153    class FunctorToMap : public MapBase<K, V> {
   1.154      F _f;
   1.155    public:
   1.156 -    typedef MapBase<K, V> Parent;
   1.157 -    typedef typename Parent::Key Key;
   1.158 -    typedef typename Parent::Value Value;
   1.159 +    ///\e
   1.160 +    typedef K Key;
   1.161 +    ///\e
   1.162 +    typedef V Value;
   1.163  
   1.164      /// Constructor
   1.165      FunctorToMap(const F &f = F()) : _f(f) {}
   1.166 -    /// \e
   1.167 +    ///\e
   1.168      Value operator[](const Key &k) const { return _f(k); }
   1.169    };
   1.170  
   1.171 @@ -669,18 +674,19 @@
   1.172    class MapToFunctor : public MapBase<typename M::Key, typename M::Value> {
   1.173      const M &_m;
   1.174    public:
   1.175 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.176 -    typedef typename Parent::Key Key;
   1.177 -    typedef typename Parent::Value Value;
   1.178 -
   1.179 -    typedef typename Parent::Key argument_type;
   1.180 -    typedef typename Parent::Value result_type;
   1.181 +    ///\e
   1.182 +    typedef typename M::Key Key;
   1.183 +    ///\e
   1.184 +    typedef typename M::Value Value;
   1.185 +
   1.186 +    typedef typename M::Key argument_type;
   1.187 +    typedef typename M::Value result_type;
   1.188  
   1.189      /// Constructor
   1.190      MapToFunctor(const M &m) : _m(m) {}
   1.191 -    /// \e
   1.192 +    ///\e
   1.193      Value operator()(const Key &k) const { return _m[k]; }
   1.194 -    /// \e
   1.195 +    ///\e
   1.196      Value operator[](const Key &k) const { return _m[k]; }
   1.197    };
   1.198  
   1.199 @@ -709,9 +715,10 @@
   1.200    class ConvertMap : public MapBase<typename M::Key, V> {
   1.201      const M &_m;
   1.202    public:
   1.203 -    typedef MapBase<typename M::Key, V> Parent;
   1.204 -    typedef typename Parent::Key Key;
   1.205 -    typedef typename Parent::Value Value;
   1.206 +    ///\e
   1.207 +    typedef typename M::Key Key;
   1.208 +    ///\e
   1.209 +    typedef V Value;
   1.210  
   1.211      /// Constructor
   1.212  
   1.213 @@ -719,7 +726,7 @@
   1.214      /// \param m The underlying map.
   1.215      ConvertMap(const M &m) : _m(m) {}
   1.216  
   1.217 -    /// \e
   1.218 +    ///\e
   1.219      Value operator[](const Key &k) const { return _m[k]; }
   1.220    };
   1.221  
   1.222 @@ -751,9 +758,10 @@
   1.223      M1 &_m1;
   1.224      M2 &_m2;
   1.225    public:
   1.226 -    typedef MapBase<typename M1::Key, typename M1::Value> Parent;
   1.227 -    typedef typename Parent::Key Key;
   1.228 -    typedef typename Parent::Value Value;
   1.229 +    ///\e
   1.230 +    typedef typename M1::Key Key;
   1.231 +    ///\e
   1.232 +    typedef typename M1::Value Value;
   1.233  
   1.234      /// Constructor
   1.235      ForkMap(M1 &m1, M2 &m2) : _m1(m1), _m2(m2) {}
   1.236 @@ -797,13 +805,14 @@
   1.237      const M1 &_m1;
   1.238      const M2 &_m2;
   1.239    public:
   1.240 -    typedef MapBase<typename M1::Key, typename M1::Value> Parent;
   1.241 -    typedef typename Parent::Key Key;
   1.242 -    typedef typename Parent::Value Value;
   1.243 +    ///\e
   1.244 +    typedef typename M1::Key Key;
   1.245 +    ///\e
   1.246 +    typedef typename M1::Value Value;
   1.247  
   1.248      /// Constructor
   1.249      AddMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
   1.250 -    /// \e
   1.251 +    ///\e
   1.252      Value operator[](const Key &k) const { return _m1[k]+_m2[k]; }
   1.253    };
   1.254  
   1.255 @@ -845,13 +854,14 @@
   1.256      const M1 &_m1;
   1.257      const M2 &_m2;
   1.258    public:
   1.259 -    typedef MapBase<typename M1::Key, typename M1::Value> Parent;
   1.260 -    typedef typename Parent::Key Key;
   1.261 -    typedef typename Parent::Value Value;
   1.262 +    ///\e
   1.263 +    typedef typename M1::Key Key;
   1.264 +    ///\e
   1.265 +    typedef typename M1::Value Value;
   1.266  
   1.267      /// Constructor
   1.268      SubMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
   1.269 -    /// \e
   1.270 +    ///\e
   1.271      Value operator[](const Key &k) const { return _m1[k]-_m2[k]; }
   1.272    };
   1.273  
   1.274 @@ -894,13 +904,14 @@
   1.275      const M1 &_m1;
   1.276      const M2 &_m2;
   1.277    public:
   1.278 -    typedef MapBase<typename M1::Key, typename M1::Value> Parent;
   1.279 -    typedef typename Parent::Key Key;
   1.280 -    typedef typename Parent::Value Value;
   1.281 +    ///\e
   1.282 +    typedef typename M1::Key Key;
   1.283 +    ///\e
   1.284 +    typedef typename M1::Value Value;
   1.285  
   1.286      /// Constructor
   1.287      MulMap(const M1 &m1,const M2 &m2) : _m1(m1), _m2(m2) {}
   1.288 -    /// \e
   1.289 +    ///\e
   1.290      Value operator[](const Key &k) const { return _m1[k]*_m2[k]; }
   1.291    };
   1.292  
   1.293 @@ -942,13 +953,14 @@
   1.294      const M1 &_m1;
   1.295      const M2 &_m2;
   1.296    public:
   1.297 -    typedef MapBase<typename M1::Key, typename M1::Value> Parent;
   1.298 -    typedef typename Parent::Key Key;
   1.299 -    typedef typename Parent::Value Value;
   1.300 +    ///\e
   1.301 +    typedef typename M1::Key Key;
   1.302 +    ///\e
   1.303 +    typedef typename M1::Value Value;
   1.304  
   1.305      /// Constructor
   1.306      DivMap(const M1 &m1,const M2 &m2) : _m1(m1), _m2(m2) {}
   1.307 -    /// \e
   1.308 +    ///\e
   1.309      Value operator[](const Key &k) const { return _m1[k]/_m2[k]; }
   1.310    };
   1.311  
   1.312 @@ -992,9 +1004,10 @@
   1.313      const M &_m;
   1.314      C _v;
   1.315    public:
   1.316 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.317 -    typedef typename Parent::Key Key;
   1.318 -    typedef typename Parent::Value Value;
   1.319 +    ///\e
   1.320 +    typedef typename M::Key Key;
   1.321 +    ///\e
   1.322 +    typedef typename M::Value Value;
   1.323  
   1.324      /// Constructor
   1.325  
   1.326 @@ -1002,7 +1015,7 @@
   1.327      /// \param m The undelying map.
   1.328      /// \param v The constant value.
   1.329      ShiftMap(const M &m, const C &v) : _m(m), _v(v) {}
   1.330 -    /// \e
   1.331 +    ///\e
   1.332      Value operator[](const Key &k) const { return _m[k]+_v; }
   1.333    };
   1.334  
   1.335 @@ -1022,9 +1035,10 @@
   1.336      M &_m;
   1.337      C _v;
   1.338    public:
   1.339 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.340 -    typedef typename Parent::Key Key;
   1.341 -    typedef typename Parent::Value Value;
   1.342 +    ///\e
   1.343 +    typedef typename M::Key Key;
   1.344 +    ///\e
   1.345 +    typedef typename M::Value Value;
   1.346  
   1.347      /// Constructor
   1.348  
   1.349 @@ -1032,9 +1046,9 @@
   1.350      /// \param m The undelying map.
   1.351      /// \param v The constant value.
   1.352      ShiftWriteMap(M &m, const C &v) : _m(m), _v(v) {}
   1.353 -    /// \e
   1.354 +    ///\e
   1.355      Value operator[](const Key &k) const { return _m[k]+_v; }
   1.356 -    /// \e
   1.357 +    ///\e
   1.358      void set(const Key &k, const Value &v) { _m.set(k, v-_v); }
   1.359    };
   1.360  
   1.361 @@ -1093,9 +1107,10 @@
   1.362      const M &_m;
   1.363      C _v;
   1.364    public:
   1.365 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.366 -    typedef typename Parent::Key Key;
   1.367 -    typedef typename Parent::Value Value;
   1.368 +    ///\e
   1.369 +    typedef typename M::Key Key;
   1.370 +    ///\e
   1.371 +    typedef typename M::Value Value;
   1.372  
   1.373      /// Constructor
   1.374  
   1.375 @@ -1103,7 +1118,7 @@
   1.376      /// \param m The undelying map.
   1.377      /// \param v The constant value.
   1.378      ScaleMap(const M &m, const C &v) : _m(m), _v(v) {}
   1.379 -    /// \e
   1.380 +    ///\e
   1.381      Value operator[](const Key &k) const { return _v*_m[k]; }
   1.382    };
   1.383  
   1.384 @@ -1124,9 +1139,10 @@
   1.385      M &_m;
   1.386      C _v;
   1.387    public:
   1.388 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.389 -    typedef typename Parent::Key Key;
   1.390 -    typedef typename Parent::Value Value;
   1.391 +    ///\e
   1.392 +    typedef typename M::Key Key;
   1.393 +    ///\e
   1.394 +    typedef typename M::Value Value;
   1.395  
   1.396      /// Constructor
   1.397  
   1.398 @@ -1134,9 +1150,9 @@
   1.399      /// \param m The undelying map.
   1.400      /// \param v The constant value.
   1.401      ScaleWriteMap(M &m, const C &v) : _m(m), _v(v) {}
   1.402 -    /// \e
   1.403 +    ///\e
   1.404      Value operator[](const Key &k) const { return _v*_m[k]; }
   1.405 -    /// \e
   1.406 +    ///\e
   1.407      void set(const Key &k, const Value &v) { _m.set(k, v/_v); }
   1.408    };
   1.409  
   1.410 @@ -1193,13 +1209,14 @@
   1.411    class NegMap : public MapBase<typename M::Key, typename M::Value> {
   1.412      const M& _m;
   1.413    public:
   1.414 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.415 -    typedef typename Parent::Key Key;
   1.416 -    typedef typename Parent::Value Value;
   1.417 +    ///\e
   1.418 +    typedef typename M::Key Key;
   1.419 +    ///\e
   1.420 +    typedef typename M::Value Value;
   1.421  
   1.422      /// Constructor
   1.423      NegMap(const M &m) : _m(m) {}
   1.424 -    /// \e
   1.425 +    ///\e
   1.426      Value operator[](const Key &k) const { return -_m[k]; }
   1.427    };
   1.428  
   1.429 @@ -1228,15 +1245,16 @@
   1.430    class NegWriteMap : public MapBase<typename M::Key, typename M::Value> {
   1.431      M &_m;
   1.432    public:
   1.433 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.434 -    typedef typename Parent::Key Key;
   1.435 -    typedef typename Parent::Value Value;
   1.436 +    ///\e
   1.437 +    typedef typename M::Key Key;
   1.438 +    ///\e
   1.439 +    typedef typename M::Value Value;
   1.440  
   1.441      /// Constructor
   1.442      NegWriteMap(M &m) : _m(m) {}
   1.443 -    /// \e
   1.444 +    ///\e
   1.445      Value operator[](const Key &k) const { return -_m[k]; }
   1.446 -    /// \e
   1.447 +    ///\e
   1.448      void set(const Key &k, const Value &v) { _m.set(k, -v); }
   1.449    };
   1.450  
   1.451 @@ -1282,13 +1300,14 @@
   1.452    class AbsMap : public MapBase<typename M::Key, typename M::Value> {
   1.453      const M &_m;
   1.454    public:
   1.455 -    typedef MapBase<typename M::Key, typename M::Value> Parent;
   1.456 -    typedef typename Parent::Key Key;
   1.457 -    typedef typename Parent::Value Value;
   1.458 +    ///\e
   1.459 +    typedef typename M::Key Key;
   1.460 +    ///\e
   1.461 +    typedef typename M::Value Value;
   1.462  
   1.463      /// Constructor
   1.464      AbsMap(const M &m) : _m(m) {}
   1.465 -    /// \e
   1.466 +    ///\e
   1.467      Value operator[](const Key &k) const {
   1.468        Value tmp = _m[k];
   1.469        return tmp >= 0 ? tmp : -tmp;
   1.470 @@ -1337,9 +1356,10 @@
   1.471    template <typename K>
   1.472    class TrueMap : public MapBase<K, bool> {
   1.473    public:
   1.474 -    typedef MapBase<K, bool> Parent;
   1.475 -    typedef typename Parent::Key Key;
   1.476 -    typedef typename Parent::Value Value;
   1.477 +    ///\e
   1.478 +    typedef K Key;
   1.479 +    ///\e
   1.480 +    typedef bool Value;
   1.481  
   1.482      /// Gives back \c true.
   1.483      Value operator[](const Key&) const { return true; }
   1.484 @@ -1374,9 +1394,10 @@
   1.485    template <typename K>
   1.486    class FalseMap : public MapBase<K, bool> {
   1.487    public:
   1.488 -    typedef MapBase<K, bool> Parent;
   1.489 -    typedef typename Parent::Key Key;
   1.490 -    typedef typename Parent::Value Value;
   1.491 +    ///\e
   1.492 +    typedef K Key;
   1.493 +    ///\e
   1.494 +    typedef bool Value;
   1.495  
   1.496      /// Gives back \c false.
   1.497      Value operator[](const Key&) const { return false; }
   1.498 @@ -1419,13 +1440,14 @@
   1.499      const M1 &_m1;
   1.500      const M2 &_m2;
   1.501    public:
   1.502 -    typedef MapBase<typename M1::Key, bool> Parent;
   1.503 -    typedef typename Parent::Key Key;
   1.504 -    typedef typename Parent::Value Value;
   1.505 +    ///\e
   1.506 +    typedef typename M1::Key Key;
   1.507 +    ///\e
   1.508 +    typedef bool Value;
   1.509  
   1.510      /// Constructor
   1.511      AndMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
   1.512 -    /// \e
   1.513 +    ///\e
   1.514      Value operator[](const Key &k) const { return _m1[k]&&_m2[k]; }
   1.515    };
   1.516  
   1.517 @@ -1467,13 +1489,14 @@
   1.518      const M1 &_m1;
   1.519      const M2 &_m2;
   1.520    public:
   1.521 -    typedef MapBase<typename M1::Key, bool> Parent;
   1.522 -    typedef typename Parent::Key Key;
   1.523 -    typedef typename Parent::Value Value;
   1.524 +    ///\e
   1.525 +    typedef typename M1::Key Key;
   1.526 +    ///\e
   1.527 +    typedef bool Value;
   1.528  
   1.529      /// Constructor
   1.530      OrMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
   1.531 -    /// \e
   1.532 +    ///\e
   1.533      Value operator[](const Key &k) const { return _m1[k]||_m2[k]; }
   1.534    };
   1.535  
   1.536 @@ -1506,13 +1529,14 @@
   1.537    class NotMap : public MapBase<typename M::Key, bool> {
   1.538      const M &_m;
   1.539    public:
   1.540 -    typedef MapBase<typename M::Key, bool> Parent;
   1.541 -    typedef typename Parent::Key Key;
   1.542 -    typedef typename Parent::Value Value;
   1.543 +    ///\e
   1.544 +    typedef typename M::Key Key;
   1.545 +    ///\e
   1.546 +    typedef bool Value;
   1.547  
   1.548      /// Constructor
   1.549      NotMap(const M &m) : _m(m) {}
   1.550 -    /// \e
   1.551 +    ///\e
   1.552      Value operator[](const Key &k) const { return !_m[k]; }
   1.553    };
   1.554  
   1.555 @@ -1532,15 +1556,16 @@
   1.556    class NotWriteMap : public MapBase<typename M::Key, bool> {
   1.557      M &_m;
   1.558    public:
   1.559 -    typedef MapBase<typename M::Key, bool> Parent;
   1.560 -    typedef typename Parent::Key Key;
   1.561 -    typedef typename Parent::Value Value;
   1.562 +    ///\e
   1.563 +    typedef typename M::Key Key;
   1.564 +    ///\e
   1.565 +    typedef bool Value;
   1.566  
   1.567      /// Constructor
   1.568      NotWriteMap(M &m) : _m(m) {}
   1.569 -    /// \e
   1.570 +    ///\e
   1.571      Value operator[](const Key &k) const { return !_m[k]; }
   1.572 -    /// \e
   1.573 +    ///\e
   1.574      void set(const Key &k, bool v) { _m.set(k, !v); }
   1.575    };
   1.576  
   1.577 @@ -1595,13 +1620,14 @@
   1.578      const M1 &_m1;
   1.579      const M2 &_m2;
   1.580    public:
   1.581 -    typedef MapBase<typename M1::Key, bool> Parent;
   1.582 -    typedef typename Parent::Key Key;
   1.583 -    typedef typename Parent::Value Value;
   1.584 +    ///\e
   1.585 +    typedef typename M1::Key Key;
   1.586 +    ///\e
   1.587 +    typedef bool Value;
   1.588  
   1.589      /// Constructor
   1.590      EqualMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
   1.591 -    /// \e
   1.592 +    ///\e
   1.593      Value operator[](const Key &k) const { return _m1[k]==_m2[k]; }
   1.594    };
   1.595  
   1.596 @@ -1643,13 +1669,14 @@
   1.597      const M1 &_m1;
   1.598      const M2 &_m2;
   1.599    public:
   1.600 -    typedef MapBase<typename M1::Key, bool> Parent;
   1.601 -    typedef typename Parent::Key Key;
   1.602 -    typedef typename Parent::Value Value;
   1.603 +    ///\e
   1.604 +    typedef typename M1::Key Key;
   1.605 +    ///\e
   1.606 +    typedef bool Value;
   1.607  
   1.608      /// Constructor
   1.609      LessMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
   1.610 -    /// \e
   1.611 +    ///\e
   1.612      Value operator[](const Key &k) const { return _m1[k]<_m2[k]; }
   1.613    };
   1.614  
   1.615 @@ -1705,24 +1732,27 @@
   1.616    /// The simplest way of using this map is through the loggerBoolMap()
   1.617    /// function.
   1.618    ///
   1.619 -  /// \tparam It The type of the iterator.
   1.620 -  /// \tparam Ke The key type of the map. The default value set
   1.621 +  /// \tparam IT The type of the iterator.
   1.622 +  /// \tparam KEY The key type of the map. The default value set
   1.623    /// according to the iterator type should work in most cases.
   1.624    ///
   1.625    /// \note The container of the iterator must contain enough space
   1.626    /// for the elements or the iterator should be an inserter iterator.
   1.627  #ifdef DOXYGEN
   1.628 -  template <typename It, typename Ke>
   1.629 +  template <typename IT, typename KEY>
   1.630  #else
   1.631 -  template <typename It,
   1.632 -            typename Ke=typename _maps_bits::IteratorTraits<It>::Value>
   1.633 +  template <typename IT,
   1.634 +            typename KEY = typename _maps_bits::IteratorTraits<IT>::Value>
   1.635  #endif
   1.636 -  class LoggerBoolMap {
   1.637 +  class LoggerBoolMap : public MapBase<KEY, bool> {
   1.638    public:
   1.639 -    typedef It Iterator;
   1.640 -
   1.641 -    typedef Ke Key;
   1.642 +
   1.643 +    ///\e
   1.644 +    typedef KEY Key;
   1.645 +    ///\e
   1.646      typedef bool Value;
   1.647 +    ///\e
   1.648 +    typedef IT Iterator;
   1.649  
   1.650      /// Constructor
   1.651      LoggerBoolMap(Iterator it)
   1.652 @@ -1785,23 +1815,36 @@
   1.653    /// \addtogroup graph_maps
   1.654    /// @{
   1.655  
   1.656 -  /// Provides an immutable and unique id for each item in the graph.
   1.657 -
   1.658 -  /// The IdMap class provides a unique and immutable id for each item of the
   1.659 -  /// same type (e.g. node) in the graph. This id is <ul><li>\b unique:
   1.660 -  /// different items (nodes) get different ids <li>\b immutable: the id of an
   1.661 -  /// item (node) does not change (even if you delete other nodes).  </ul>
   1.662 -  /// Through this map you get access (i.e. can read) the inner id values of
   1.663 -  /// the items stored in the graph. This map can be inverted with its member
   1.664 +  /// \brief Provides an immutable and unique id for each item in a graph.
   1.665 +  ///
   1.666 +  /// IdMap provides a unique and immutable id for each item of the
   1.667 +  /// same type (\c Node, \c Arc or \c Edge) in a graph. This id is 
   1.668 +  ///  - \b unique: different items get different ids,
   1.669 +  ///  - \b immutable: the id of an item does not change (even if you
   1.670 +  ///    delete other nodes).
   1.671 +  ///
   1.672 +  /// Using this map you get access (i.e. can read) the inner id values of
   1.673 +  /// the items stored in the graph, which is returned by the \c id()
   1.674 +  /// function of the graph. This map can be inverted with its member
   1.675    /// class \c InverseMap or with the \c operator() member.
   1.676    ///
   1.677 -  template <typename _Graph, typename _Item>
   1.678 -  class IdMap {
   1.679 +  /// \tparam GR The graph type.
   1.680 +  /// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or
   1.681 +  /// \c GR::Edge).
   1.682 +  ///
   1.683 +  /// \see RangeIdMap
   1.684 +  template <typename GR, typename K>
   1.685 +  class IdMap : public MapBase<K, int> {
   1.686    public:
   1.687 -    typedef _Graph Graph;
   1.688 +    /// The graph type of IdMap.
   1.689 +    typedef GR Graph;
   1.690 +    typedef GR Digraph;
   1.691 +    /// The key type of IdMap (\c Node, \c Arc or \c Edge).
   1.692 +    typedef K Item;
   1.693 +    /// The key type of IdMap (\c Node, \c Arc or \c Edge).
   1.694 +    typedef K Key;
   1.695 +    /// The value type of IdMap.
   1.696      typedef int Value;
   1.697 -    typedef _Item Item;
   1.698 -    typedef _Item Key;
   1.699  
   1.700      /// \brief Constructor.
   1.701      ///
   1.702 @@ -1813,9 +1856,9 @@
   1.703      /// Gives back the immutable and unique \e id of the item.
   1.704      int operator[](const Item& item) const { return _graph->id(item);}
   1.705  
   1.706 -    /// \brief Gives back the item by its id.
   1.707 +    /// \brief Gives back the \e item by its id.
   1.708      ///
   1.709 -    /// Gives back the item by its id.
   1.710 +    /// Gives back the \e item by its id.
   1.711      Item operator()(int id) { return _graph->fromId(id, Item()); }
   1.712  
   1.713    private:
   1.714 @@ -1823,9 +1866,9 @@
   1.715  
   1.716    public:
   1.717  
   1.718 -    /// \brief The class represents the inverse of its owner (IdMap).
   1.719 +    /// \brief This class represents the inverse of its owner (IdMap).
   1.720      ///
   1.721 -    /// The class represents the inverse of its owner (IdMap).
   1.722 +    /// This class represents the inverse of its owner (IdMap).
   1.723      /// \see inverse()
   1.724      class InverseMap {
   1.725      public:
   1.726 @@ -1843,7 +1886,6 @@
   1.727        /// \brief Gives back the given item from its id.
   1.728        ///
   1.729        /// Gives back the given item from its id.
   1.730 -      ///
   1.731        Item operator[](int id) const { return _graph->fromId(id, Item());}
   1.732  
   1.733      private:
   1.734 @@ -1854,59 +1896,61 @@
   1.735      ///
   1.736      /// Gives back the inverse of the IdMap.
   1.737      InverseMap inverse() const { return InverseMap(*_graph);}
   1.738 -
   1.739    };
   1.740  
   1.741  
   1.742 -  /// \brief General invertable graph-map type.
   1.743 -
   1.744 -  /// This type provides simple invertable graph-maps.
   1.745 -  /// The InvertableMap wraps an arbitrary ReadWriteMap
   1.746 +  /// \brief General cross reference graph map type.
   1.747 +
   1.748 +  /// This class provides simple invertable graph maps.
   1.749 +  /// It wraps an arbitrary \ref concepts::ReadWriteMap "ReadWriteMap"
   1.750    /// and if a key is set to a new value then store it
   1.751    /// in the inverse map.
   1.752    ///
   1.753    /// The values of the map can be accessed
   1.754    /// with stl compatible forward iterator.
   1.755    ///
   1.756 -  /// \tparam _Graph The graph type.
   1.757 -  /// \tparam _Item The item type of the graph.
   1.758 -  /// \tparam _Value The value type of the map.
   1.759 +  /// \tparam GR The graph type.
   1.760 +  /// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or
   1.761 +  /// \c GR::Edge).
   1.762 +  /// \tparam V The value type of the map.
   1.763    ///
   1.764    /// \see IterableValueMap
   1.765 -  template <typename _Graph, typename _Item, typename _Value>
   1.766 -  class InvertableMap
   1.767 -    : protected ItemSetTraits<_Graph, _Item>::template Map<_Value>::Type {
   1.768 +  template <typename GR, typename K, typename V>
   1.769 +  class CrossRefMap
   1.770 +    : protected ItemSetTraits<GR, K>::template Map<V>::Type {
   1.771    private:
   1.772  
   1.773 -    typedef typename ItemSetTraits<_Graph, _Item>::
   1.774 -    template Map<_Value>::Type Map;
   1.775 -    typedef _Graph Graph;
   1.776 -
   1.777 -    typedef std::map<_Value, _Item> Container;
   1.778 +    typedef typename ItemSetTraits<GR, K>::
   1.779 +      template Map<V>::Type Map;
   1.780 +
   1.781 +    typedef std::map<V, K> Container;
   1.782      Container _inv_map;
   1.783  
   1.784    public:
   1.785  
   1.786 -    /// The key type of InvertableMap (Node, Arc, Edge).
   1.787 -    typedef typename Map::Key Key;
   1.788 -    /// The value type of the InvertableMap.
   1.789 -    typedef typename Map::Value Value;
   1.790 +    /// The graph type of CrossRefMap.
   1.791 +    typedef GR Graph;
   1.792 +    typedef GR Digraph;
   1.793 +    /// The key type of CrossRefMap (\c Node, \c Arc or \c Edge).
   1.794 +    typedef K Item;
   1.795 +    /// The key type of CrossRefMap (\c Node, \c Arc or \c Edge).
   1.796 +    typedef K Key;
   1.797 +    /// The value type of CrossRefMap.
   1.798 +    typedef V Value;
   1.799  
   1.800      /// \brief Constructor.
   1.801      ///
   1.802 -    /// Construct a new InvertableMap for the graph.
   1.803 -    ///
   1.804 -    explicit InvertableMap(const Graph& graph) : Map(graph) {}
   1.805 +    /// Construct a new CrossRefMap for the given graph.
   1.806 +    explicit CrossRefMap(const Graph& graph) : Map(graph) {}
   1.807  
   1.808      /// \brief Forward iterator for values.
   1.809      ///
   1.810      /// This iterator is an stl compatible forward
   1.811      /// iterator on the values of the map. The values can
   1.812 -    /// be accessed in the [beginValue, endValue) range.
   1.813 -    ///
   1.814 +    /// be accessed in the <tt>[beginValue, endValue)</tt> range.
   1.815      class ValueIterator
   1.816        : public std::iterator<std::forward_iterator_tag, Value> {
   1.817 -      friend class InvertableMap;
   1.818 +      friend class CrossRefMap;
   1.819      private:
   1.820        ValueIterator(typename Container::const_iterator _it)
   1.821          : it(_it) {}
   1.822 @@ -1935,7 +1979,7 @@
   1.823      ///
   1.824      /// Returns an stl compatible iterator to the
   1.825      /// first value of the map. The values of the
   1.826 -    /// map can be accessed in the [beginValue, endValue)
   1.827 +    /// map can be accessed in the <tt>[beginValue, endValue)</tt>
   1.828      /// range.
   1.829      ValueIterator beginValue() const {
   1.830        return ValueIterator(_inv_map.begin());
   1.831 @@ -1945,15 +1989,15 @@
   1.832      ///
   1.833      /// Returns an stl compatible iterator after the
   1.834      /// last value of the map. The values of the
   1.835 -    /// map can be accessed in the [beginValue, endValue)
   1.836 +    /// map can be accessed in the <tt>[beginValue, endValue)</tt>
   1.837      /// range.
   1.838      ValueIterator endValue() const {
   1.839        return ValueIterator(_inv_map.end());
   1.840      }
   1.841  
   1.842 -    /// \brief The setter function of the map.
   1.843 +    /// \brief Sets the value associated with the given key.
   1.844      ///
   1.845 -    /// Sets the mapped value.
   1.846 +    /// Sets the value associated with the given key.
   1.847      void set(const Key& key, const Value& val) {
   1.848        Value oldval = Map::operator[](key);
   1.849        typename Container::iterator it = _inv_map.find(oldval);
   1.850 @@ -1964,9 +2008,9 @@
   1.851        Map::set(key, val);
   1.852      }
   1.853  
   1.854 -    /// \brief The getter function of the map.
   1.855 +    /// \brief Returns the value associated with the given key.
   1.856      ///
   1.857 -    /// It gives back the value associated with the key.
   1.858 +    /// Returns the value associated with the given key.
   1.859      typename MapTraits<Map>::ConstReturnValue
   1.860      operator[](const Key& key) const {
   1.861        return Map::operator[](key);
   1.862 @@ -1982,9 +2026,9 @@
   1.863  
   1.864    protected:
   1.865  
   1.866 -    /// \brief Erase the key from the map.
   1.867 +    /// \brief Erase the key from the map and the inverse map.
   1.868      ///
   1.869 -    /// Erase the key to the map. It is called by the
   1.870 +    /// Erase the key from the map and the inverse map. It is called by the
   1.871      /// \c AlterationNotifier.
   1.872      virtual void erase(const Key& key) {
   1.873        Value val = Map::operator[](key);
   1.874 @@ -1995,9 +2039,9 @@
   1.875        Map::erase(key);
   1.876      }
   1.877  
   1.878 -    /// \brief Erase more keys from the map.
   1.879 +    /// \brief Erase more keys from the map and the inverse map.
   1.880      ///
   1.881 -    /// Erase more keys from the map. It is called by the
   1.882 +    /// Erase more keys from the map and the inverse map. It is called by the
   1.883      /// \c AlterationNotifier.
   1.884      virtual void erase(const std::vector<Key>& keys) {
   1.885        for (int i = 0; i < int(keys.size()); ++i) {
   1.886 @@ -2010,9 +2054,9 @@
   1.887        Map::erase(keys);
   1.888      }
   1.889  
   1.890 -    /// \brief Clear the keys from the map and inverse map.
   1.891 +    /// \brief Clear the keys from the map and the inverse map.
   1.892      ///
   1.893 -    /// Clear the keys from the map and inverse map. It is called by the
   1.894 +    /// Clear the keys from the map and the inverse map. It is called by the
   1.895      /// \c AlterationNotifier.
   1.896      virtual void clear() {
   1.897        _inv_map.clear();
   1.898 @@ -2024,76 +2068,84 @@
   1.899      /// \brief The inverse map type.
   1.900      ///
   1.901      /// The inverse of this map. The subscript operator of the map
   1.902 -    /// gives back always the item what was last assigned to the value.
   1.903 +    /// gives back the item that was last assigned to the value.
   1.904      class InverseMap {
   1.905      public:
   1.906 -      /// \brief Constructor of the InverseMap.
   1.907 +      /// \brief Constructor
   1.908        ///
   1.909        /// Constructor of the InverseMap.
   1.910 -      explicit InverseMap(const InvertableMap& inverted)
   1.911 +      explicit InverseMap(const CrossRefMap& inverted)
   1.912          : _inverted(inverted) {}
   1.913  
   1.914        /// The value type of the InverseMap.
   1.915 -      typedef typename InvertableMap::Key Value;
   1.916 +      typedef typename CrossRefMap::Key Value;
   1.917        /// The key type of the InverseMap.
   1.918 -      typedef typename InvertableMap::Value Key;
   1.919 +      typedef typename CrossRefMap::Value Key;
   1.920  
   1.921        /// \brief Subscript operator.
   1.922        ///
   1.923 -      /// Subscript operator. It gives back always the item
   1.924 -      /// what was last assigned to the value.
   1.925 +      /// Subscript operator. It gives back the item
   1.926 +      /// that was last assigned to the given value.
   1.927        Value operator[](const Key& key) const {
   1.928          return _inverted(key);
   1.929        }
   1.930  
   1.931      private:
   1.932 -      const InvertableMap& _inverted;
   1.933 +      const CrossRefMap& _inverted;
   1.934      };
   1.935  
   1.936 -    /// \brief It gives back the just readable inverse map.
   1.937 +    /// \brief It gives back the read-only inverse map.
   1.938      ///
   1.939 -    /// It gives back the just readable inverse map.
   1.940 +    /// It gives back the read-only inverse map.
   1.941      InverseMap inverse() const {
   1.942        return InverseMap(*this);
   1.943      }
   1.944  
   1.945    };
   1.946  
   1.947 -  /// \brief Provides a mutable, continuous and unique descriptor for each
   1.948 -  /// item in the graph.
   1.949 +  /// \brief Provides continuous and unique ID for the
   1.950 +  /// items of a graph.
   1.951    ///
   1.952 -  /// The DescriptorMap class provides a unique and continuous (but mutable)
   1.953 -  /// descriptor (id) for each item of the same type (e.g. node) in the
   1.954 -  /// graph. This id is <ul><li>\b unique: different items (nodes) get
   1.955 -  /// different ids <li>\b continuous: the range of the ids is the set of
   1.956 -  /// integers between 0 and \c n-1, where \c n is the number of the items of
   1.957 -  /// this type (e.g. nodes) (so the id of a node can change if you delete an
   1.958 -  /// other node, i.e. this id is mutable).  </ul> This map can be inverted
   1.959 -  /// with its member class \c InverseMap, or with the \c operator() member.
   1.960 +  /// RangeIdMap provides a unique and continuous
   1.961 +  /// ID for each item of a given type (\c Node, \c Arc or
   1.962 +  /// \c Edge) in a graph. This id is
   1.963 +  ///  - \b unique: different items get different ids,
   1.964 +  ///  - \b continuous: the range of the ids is the set of integers
   1.965 +  ///    between 0 and \c n-1, where \c n is the number of the items of
   1.966 +  ///    this type (\c Node, \c Arc or \c Edge).
   1.967 +  ///  - So, the ids can change when deleting an item of the same type.
   1.968    ///
   1.969 -  /// \tparam _Graph The graph class the \c DescriptorMap belongs to.
   1.970 -  /// \tparam _Item The Item is the Key of the Map. It may be Node, Arc or
   1.971 -  /// Edge.
   1.972 -  template <typename _Graph, typename _Item>
   1.973 -  class DescriptorMap
   1.974 -    : protected ItemSetTraits<_Graph, _Item>::template Map<int>::Type {
   1.975 -
   1.976 -    typedef _Item Item;
   1.977 -    typedef typename ItemSetTraits<_Graph, _Item>::template Map<int>::Type Map;
   1.978 +  /// Thus this id is not (necessarily) the same as what can get using
   1.979 +  /// the \c id() function of the graph or \ref IdMap.
   1.980 +  /// This map can be inverted with its member class \c InverseMap,
   1.981 +  /// or with the \c operator() member.
   1.982 +  ///
   1.983 +  /// \tparam GR The graph type.
   1.984 +  /// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or
   1.985 +  /// \c GR::Edge).
   1.986 +  ///
   1.987 +  /// \see IdMap
   1.988 +  template <typename GR, typename K>
   1.989 +  class RangeIdMap
   1.990 +    : protected ItemSetTraits<GR, K>::template Map<int>::Type {
   1.991 +
   1.992 +    typedef typename ItemSetTraits<GR, K>::template Map<int>::Type Map;
   1.993  
   1.994    public:
   1.995 -    /// The graph class of DescriptorMap.
   1.996 -    typedef _Graph Graph;
   1.997 -
   1.998 -    /// The key type of DescriptorMap (Node, Arc, Edge).
   1.999 -    typedef typename Map::Key Key;
  1.1000 -    /// The value type of DescriptorMap.
  1.1001 -    typedef typename Map::Value Value;
  1.1002 +    /// The graph type of RangeIdMap.
  1.1003 +    typedef GR Graph;
  1.1004 +    typedef GR Digraph;
  1.1005 +    /// The key type of RangeIdMap (\c Node, \c Arc or \c Edge).
  1.1006 +    typedef K Item;
  1.1007 +    /// The key type of RangeIdMap (\c Node, \c Arc or \c Edge).
  1.1008 +    typedef K Key;
  1.1009 +    /// The value type of RangeIdMap.
  1.1010 +    typedef int Value;
  1.1011  
  1.1012      /// \brief Constructor.
  1.1013      ///
  1.1014 -    /// Constructor for descriptor map.
  1.1015 -    explicit DescriptorMap(const Graph& _graph) : Map(_graph) {
  1.1016 +    /// Constructor.
  1.1017 +    explicit RangeIdMap(const Graph& gr) : Map(gr) {
  1.1018        Item it;
  1.1019        const typename Map::Notifier* nf = Map::notifier();
  1.1020        for (nf->first(it); it != INVALID; nf->next(it)) {
  1.1021 @@ -2104,7 +2156,7 @@
  1.1022  
  1.1023    protected:
  1.1024  
  1.1025 -    /// \brief Add a new key to the map.
  1.1026 +    /// \brief Adds a new key to the map.
  1.1027      ///
  1.1028      /// Add a new key to the map. It is called by the
  1.1029      /// \c AlterationNotifier.
  1.1030 @@ -2194,16 +2246,16 @@
  1.1031        _inv_map[pi] = q;
  1.1032      }
  1.1033  
  1.1034 -    /// \brief Gives back the \e descriptor of the item.
  1.1035 +    /// \brief Gives back the \e RangeId of the item
  1.1036      ///
  1.1037 -    /// Gives back the mutable and unique \e descriptor of the map.
  1.1038 +    /// Gives back the \e RangeId of the item.
  1.1039      int operator[](const Item& item) const {
  1.1040        return Map::operator[](item);
  1.1041      }
  1.1042  
  1.1043 -    /// \brief Gives back the item by its descriptor.
  1.1044 -    ///
  1.1045 -    /// Gives back th item by its descriptor.
  1.1046 +    /// \brief Gives back the item belonging to a \e RangeId
  1.1047 +    /// 
  1.1048 +    /// Gives back the item belonging to a \e RangeId.
  1.1049      Item operator()(int id) const {
  1.1050        return _inv_map[id];
  1.1051      }
  1.1052 @@ -2214,27 +2266,28 @@
  1.1053      Container _inv_map;
  1.1054  
  1.1055    public:
  1.1056 -    /// \brief The inverse map type of DescriptorMap.
  1.1057 +
  1.1058 +    /// \brief The inverse map type of RangeIdMap.
  1.1059      ///
  1.1060 -    /// The inverse map type of DescriptorMap.
  1.1061 +    /// The inverse map type of RangeIdMap.
  1.1062      class InverseMap {
  1.1063      public:
  1.1064 -      /// \brief Constructor of the InverseMap.
  1.1065 +      /// \brief Constructor
  1.1066        ///
  1.1067        /// Constructor of the InverseMap.
  1.1068 -      explicit InverseMap(const DescriptorMap& inverted)
  1.1069 +      explicit InverseMap(const RangeIdMap& inverted)
  1.1070          : _inverted(inverted) {}
  1.1071  
  1.1072  
  1.1073        /// The value type of the InverseMap.
  1.1074 -      typedef typename DescriptorMap::Key Value;
  1.1075 +      typedef typename RangeIdMap::Key Value;
  1.1076        /// The key type of the InverseMap.
  1.1077 -      typedef typename DescriptorMap::Value Key;
  1.1078 +      typedef typename RangeIdMap::Value Key;
  1.1079  
  1.1080        /// \brief Subscript operator.
  1.1081        ///
  1.1082        /// Subscript operator. It gives back the item
  1.1083 -      /// that the descriptor belongs to currently.
  1.1084 +      /// that the descriptor currently belongs to.
  1.1085        Value operator[](const Key& key) const {
  1.1086          return _inverted(key);
  1.1087        }
  1.1088 @@ -2247,7 +2300,7 @@
  1.1089        }
  1.1090  
  1.1091      private:
  1.1092 -      const DescriptorMap& _inverted;
  1.1093 +      const RangeIdMap& _inverted;
  1.1094      };
  1.1095  
  1.1096      /// \brief Gives back the inverse of the map.
  1.1097 @@ -2258,230 +2311,199 @@
  1.1098      }
  1.1099    };
  1.1100  
  1.1101 -  /// \brief Returns the source of the given arc.
  1.1102 +  /// \brief Map of the source nodes of arcs in a digraph.
  1.1103    ///
  1.1104 -  /// The SourceMap gives back the source Node of the given arc.
  1.1105 +  /// SourceMap provides access for the source node of each arc in a digraph,
  1.1106 +  /// which is returned by the \c source() function of the digraph.
  1.1107 +  /// \tparam GR The digraph type.
  1.1108    /// \see TargetMap
  1.1109 -  template <typename Digraph>
  1.1110 +  template <typename GR>
  1.1111    class SourceMap {
  1.1112    public:
  1.1113  
  1.1114 -    typedef typename Digraph::Node Value;
  1.1115 -    typedef typename Digraph::Arc Key;
  1.1116 +    ///\e
  1.1117 +    typedef typename GR::Arc Key;
  1.1118 +    ///\e
  1.1119 +    typedef typename GR::Node Value;
  1.1120  
  1.1121      /// \brief Constructor
  1.1122      ///
  1.1123 -    /// Constructor
  1.1124 +    /// Constructor.
  1.1125      /// \param digraph The digraph that the map belongs to.
  1.1126 -    explicit SourceMap(const Digraph& digraph) : _digraph(digraph) {}
  1.1127 -
  1.1128 -    /// \brief The subscript operator.
  1.1129 +    explicit SourceMap(const GR& digraph) : _graph(digraph) {}
  1.1130 +
  1.1131 +    /// \brief Returns the source node of the given arc.
  1.1132      ///
  1.1133 -    /// The subscript operator.
  1.1134 -    /// \param arc The arc
  1.1135 -    /// \return The source of the arc
  1.1136 +    /// Returns the source node of the given arc.
  1.1137      Value operator[](const Key& arc) const {
  1.1138 -      return _digraph.source(arc);
  1.1139 +      return _graph.source(arc);
  1.1140      }
  1.1141  
  1.1142    private:
  1.1143 -    const Digraph& _digraph;
  1.1144 +    const GR& _graph;
  1.1145    };
  1.1146  
  1.1147    /// \brief Returns a \c SourceMap class.
  1.1148    ///
  1.1149    /// This function just returns an \c SourceMap class.
  1.1150    /// \relates SourceMap
  1.1151 -  template <typename Digraph>
  1.1152 -  inline SourceMap<Digraph> sourceMap(const Digraph& digraph) {
  1.1153 -    return SourceMap<Digraph>(digraph);
  1.1154 +  template <typename GR>
  1.1155 +  inline SourceMap<GR> sourceMap(const GR& graph) {
  1.1156 +    return SourceMap<GR>(graph);
  1.1157    }
  1.1158  
  1.1159 -  /// \brief Returns the target of the given arc.
  1.1160 +  /// \brief Map of the target nodes of arcs in a digraph.
  1.1161    ///
  1.1162 -  /// The TargetMap gives back the target Node of the given arc.
  1.1163 +  /// TargetMap provides access for the target node of each arc in a digraph,
  1.1164 +  /// which is returned by the \c target() function of the digraph.
  1.1165 +  /// \tparam GR The digraph type.
  1.1166    /// \see SourceMap
  1.1167 -  template <typename Digraph>
  1.1168 +  template <typename GR>
  1.1169    class TargetMap {
  1.1170    public:
  1.1171  
  1.1172 -    typedef typename Digraph::Node Value;
  1.1173 -    typedef typename Digraph::Arc Key;
  1.1174 +    ///\e
  1.1175 +    typedef typename GR::Arc Key;
  1.1176 +    ///\e
  1.1177 +    typedef typename GR::Node Value;
  1.1178  
  1.1179      /// \brief Constructor
  1.1180      ///
  1.1181 -    /// Constructor
  1.1182 +    /// Constructor.
  1.1183      /// \param digraph The digraph that the map belongs to.
  1.1184 -    explicit TargetMap(const Digraph& digraph) : _digraph(digraph) {}
  1.1185 -
  1.1186 -    /// \brief The subscript operator.
  1.1187 +    explicit TargetMap(const GR& digraph) : _graph(digraph) {}
  1.1188 +
  1.1189 +    /// \brief Returns the target node of the given arc.
  1.1190      ///
  1.1191 -    /// The subscript operator.
  1.1192 -    /// \param e The arc
  1.1193 -    /// \return The target of the arc
  1.1194 +    /// Returns the target node of the given arc.
  1.1195      Value operator[](const Key& e) const {
  1.1196 -      return _digraph.target(e);
  1.1197 +      return _graph.target(e);
  1.1198      }
  1.1199  
  1.1200    private:
  1.1201 -    const Digraph& _digraph;
  1.1202 +    const GR& _graph;
  1.1203    };
  1.1204  
  1.1205    /// \brief Returns a \c TargetMap class.
  1.1206    ///
  1.1207    /// This function just returns a \c TargetMap class.
  1.1208    /// \relates TargetMap
  1.1209 -  template <typename Digraph>
  1.1210 -  inline TargetMap<Digraph> targetMap(const Digraph& digraph) {
  1.1211 -    return TargetMap<Digraph>(digraph);
  1.1212 +  template <typename GR>
  1.1213 +  inline TargetMap<GR> targetMap(const GR& graph) {
  1.1214 +    return TargetMap<GR>(graph);
  1.1215    }
  1.1216  
  1.1217 -  /// \brief Returns the "forward" directed arc view of an edge.
  1.1218 +  /// \brief Map of the "forward" directed arc view of edges in a graph.
  1.1219    ///
  1.1220 -  /// Returns the "forward" directed arc view of an edge.
  1.1221 +  /// ForwardMap provides access for the "forward" directed arc view of
  1.1222 +  /// each edge in a graph, which is returned by the \c direct() function
  1.1223 +  /// of the graph with \c true parameter.
  1.1224 +  /// \tparam GR The graph type.
  1.1225    /// \see BackwardMap
  1.1226 -  template <typename Graph>
  1.1227 +  template <typename GR>
  1.1228    class ForwardMap {
  1.1229    public:
  1.1230  
  1.1231 -    typedef typename Graph::Arc Value;
  1.1232 -    typedef typename Graph::Edge Key;
  1.1233 +    typedef typename GR::Arc Value;
  1.1234 +    typedef typename GR::Edge Key;
  1.1235  
  1.1236      /// \brief Constructor
  1.1237      ///
  1.1238 -    /// Constructor
  1.1239 +    /// Constructor.
  1.1240      /// \param graph The graph that the map belongs to.
  1.1241 -    explicit ForwardMap(const Graph& graph) : _graph(graph) {}
  1.1242 -
  1.1243 -    /// \brief The subscript operator.
  1.1244 +    explicit ForwardMap(const GR& graph) : _graph(graph) {}
  1.1245 +
  1.1246 +    /// \brief Returns the "forward" directed arc view of the given edge.
  1.1247      ///
  1.1248 -    /// The subscript operator.
  1.1249 -    /// \param key An edge
  1.1250 -    /// \return The "forward" directed arc view of edge
  1.1251 +    /// Returns the "forward" directed arc view of the given edge.
  1.1252      Value operator[](const Key& key) const {
  1.1253        return _graph.direct(key, true);
  1.1254      }
  1.1255  
  1.1256    private:
  1.1257 -    const Graph& _graph;
  1.1258 +    const GR& _graph;
  1.1259    };
  1.1260  
  1.1261    /// \brief Returns a \c ForwardMap class.
  1.1262    ///
  1.1263    /// This function just returns an \c ForwardMap class.
  1.1264    /// \relates ForwardMap
  1.1265 -  template <typename Graph>
  1.1266 -  inline ForwardMap<Graph> forwardMap(const Graph& graph) {
  1.1267 -    return ForwardMap<Graph>(graph);
  1.1268 +  template <typename GR>
  1.1269 +  inline ForwardMap<GR> forwardMap(const GR& graph) {
  1.1270 +    return ForwardMap<GR>(graph);
  1.1271    }
  1.1272  
  1.1273 -  /// \brief Returns the "backward" directed arc view of an edge.
  1.1274 +  /// \brief Map of the "backward" directed arc view of edges in a graph.
  1.1275    ///
  1.1276 -  /// Returns the "backward" directed arc view of an edge.
  1.1277 +  /// BackwardMap provides access for the "backward" directed arc view of
  1.1278 +  /// each edge in a graph, which is returned by the \c direct() function
  1.1279 +  /// of the graph with \c false parameter.
  1.1280 +  /// \tparam GR The graph type.
  1.1281    /// \see ForwardMap
  1.1282 -  template <typename Graph>
  1.1283 +  template <typename GR>
  1.1284    class BackwardMap {
  1.1285    public:
  1.1286  
  1.1287 -    typedef typename Graph::Arc Value;
  1.1288 -    typedef typename Graph::Edge Key;
  1.1289 +    typedef typename GR::Arc Value;
  1.1290 +    typedef typename GR::Edge Key;
  1.1291  
  1.1292      /// \brief Constructor
  1.1293      ///
  1.1294 -    /// Constructor
  1.1295 +    /// Constructor.
  1.1296      /// \param graph The graph that the map belongs to.
  1.1297 -    explicit BackwardMap(const Graph& graph) : _graph(graph) {}
  1.1298 -
  1.1299 -    /// \brief The subscript operator.
  1.1300 +    explicit BackwardMap(const GR& graph) : _graph(graph) {}
  1.1301 +
  1.1302 +    /// \brief Returns the "backward" directed arc view of the given edge.
  1.1303      ///
  1.1304 -    /// The subscript operator.
  1.1305 -    /// \param key An edge
  1.1306 -    /// \return The "backward" directed arc view of edge
  1.1307 +    /// Returns the "backward" directed arc view of the given edge.
  1.1308      Value operator[](const Key& key) const {
  1.1309        return _graph.direct(key, false);
  1.1310      }
  1.1311  
  1.1312    private:
  1.1313 -    const Graph& _graph;
  1.1314 +    const GR& _graph;
  1.1315    };
  1.1316  
  1.1317    /// \brief Returns a \c BackwardMap class
  1.1318  
  1.1319    /// This function just returns a \c BackwardMap class.
  1.1320    /// \relates BackwardMap
  1.1321 -  template <typename Graph>
  1.1322 -  inline BackwardMap<Graph> backwardMap(const Graph& graph) {
  1.1323 -    return BackwardMap<Graph>(graph);
  1.1324 +  template <typename GR>
  1.1325 +  inline BackwardMap<GR> backwardMap(const GR& graph) {
  1.1326 +    return BackwardMap<GR>(graph);
  1.1327    }
  1.1328  
  1.1329 -  /// \brief Potential difference map
  1.1330 -  ///
  1.1331 -  /// If there is an potential map on the nodes then we
  1.1332 -  /// can get an arc map as we get the substraction of the
  1.1333 -  /// values of the target and source.
  1.1334 -  template <typename Digraph, typename NodeMap>
  1.1335 -  class PotentialDifferenceMap {
  1.1336 -  public:
  1.1337 -    typedef typename Digraph::Arc Key;
  1.1338 -    typedef typename NodeMap::Value Value;
  1.1339 -
  1.1340 -    /// \brief Constructor
  1.1341 -    ///
  1.1342 -    /// Contructor of the map
  1.1343 -    explicit PotentialDifferenceMap(const Digraph& digraph,
  1.1344 -                                    const NodeMap& potential)
  1.1345 -      : _digraph(digraph), _potential(potential) {}
  1.1346 -
  1.1347 -    /// \brief Const subscription operator
  1.1348 -    ///
  1.1349 -    /// Const subscription operator
  1.1350 -    Value operator[](const Key& arc) const {
  1.1351 -      return _potential[_digraph.target(arc)] -
  1.1352 -        _potential[_digraph.source(arc)];
  1.1353 -    }
  1.1354 -
  1.1355 -  private:
  1.1356 -    const Digraph& _digraph;
  1.1357 -    const NodeMap& _potential;
  1.1358 -  };
  1.1359 -
  1.1360 -  /// \brief Returns a PotentialDifferenceMap.
  1.1361 -  ///
  1.1362 -  /// This function just returns a PotentialDifferenceMap.
  1.1363 -  /// \relates PotentialDifferenceMap
  1.1364 -  template <typename Digraph, typename NodeMap>
  1.1365 -  PotentialDifferenceMap<Digraph, NodeMap>
  1.1366 -  potentialDifferenceMap(const Digraph& digraph, const NodeMap& potential) {
  1.1367 -    return PotentialDifferenceMap<Digraph, NodeMap>(digraph, potential);
  1.1368 -  }
  1.1369 -
  1.1370 -  /// \brief Map of the node in-degrees.
  1.1371 +  /// \brief Map of the in-degrees of nodes in a digraph.
  1.1372    ///
  1.1373    /// This map returns the in-degree of a node. Once it is constructed,
  1.1374 -  /// the degrees are stored in a standard NodeMap, so each query is done
  1.1375 +  /// the degrees are stored in a standard \c NodeMap, so each query is done
  1.1376    /// in constant time. On the other hand, the values are updated automatically
  1.1377    /// whenever the digraph changes.
  1.1378    ///
  1.1379 -  /// \warning Besides addNode() and addArc(), a digraph structure may provide
  1.1380 -  /// alternative ways to modify the digraph. The correct behavior of InDegMap
  1.1381 -  /// is not guarantied if these additional features are used. For example
  1.1382 -  /// the functions \ref ListDigraph::changeSource() "changeSource()",
  1.1383 +  /// \warning Besides \c addNode() and \c addArc(), a digraph structure 
  1.1384 +  /// may provide alternative ways to modify the digraph.
  1.1385 +  /// The correct behavior of InDegMap is not guarantied if these additional
  1.1386 +  /// features are used. For example the functions
  1.1387 +  /// \ref ListDigraph::changeSource() "changeSource()",
  1.1388    /// \ref ListDigraph::changeTarget() "changeTarget()" and
  1.1389    /// \ref ListDigraph::reverseArc() "reverseArc()"
  1.1390    /// of \ref ListDigraph will \e not update the degree values correctly.
  1.1391    ///
  1.1392    /// \sa OutDegMap
  1.1393 -
  1.1394 -  template <typename _Digraph>
  1.1395 +  template <typename GR>
  1.1396    class InDegMap
  1.1397 -    : protected ItemSetTraits<_Digraph, typename _Digraph::Arc>
  1.1398 +    : protected ItemSetTraits<GR, typename GR::Arc>
  1.1399        ::ItemNotifier::ObserverBase {
  1.1400  
  1.1401    public:
  1.1402 -
  1.1403 -    typedef _Digraph Digraph;
  1.1404 +    
  1.1405 +    /// The graph type of InDegMap
  1.1406 +    typedef GR Graph;
  1.1407 +    typedef GR Digraph;
  1.1408 +    /// The key type
  1.1409 +    typedef typename Digraph::Node Key;
  1.1410 +    /// The value type
  1.1411      typedef int Value;
  1.1412 -    typedef typename Digraph::Node Key;
  1.1413  
  1.1414      typedef typename ItemSetTraits<Digraph, typename Digraph::Arc>
  1.1415      ::ItemNotifier::ObserverBase Parent;
  1.1416 @@ -2523,9 +2545,9 @@
  1.1417  
  1.1418      /// \brief Constructor.
  1.1419      ///
  1.1420 -    /// Constructor for creating in-degree map.
  1.1421 -    explicit InDegMap(const Digraph& digraph)
  1.1422 -      : _digraph(digraph), _deg(digraph) {
  1.1423 +    /// Constructor for creating an in-degree map.
  1.1424 +    explicit InDegMap(const Digraph& graph)
  1.1425 +      : _digraph(graph), _deg(graph) {
  1.1426        Parent::attach(_digraph.notifier(typename Digraph::Arc()));
  1.1427  
  1.1428        for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
  1.1429 @@ -2533,6 +2555,8 @@
  1.1430        }
  1.1431      }
  1.1432  
  1.1433 +    /// \brief Gives back the in-degree of a Node.
  1.1434 +    ///
  1.1435      /// Gives back the in-degree of a Node.
  1.1436      int operator[](const Key& key) const {
  1.1437        return _deg[key];
  1.1438 @@ -2579,33 +2603,37 @@
  1.1439      AutoNodeMap _deg;
  1.1440    };
  1.1441  
  1.1442 -  /// \brief Map of the node out-degrees.
  1.1443 +  /// \brief Map of the out-degrees of nodes in a digraph.
  1.1444    ///
  1.1445    /// This map returns the out-degree of a node. Once it is constructed,
  1.1446 -  /// the degrees are stored in a standard NodeMap, so each query is done
  1.1447 +  /// the degrees are stored in a standard \c NodeMap, so each query is done
  1.1448    /// in constant time. On the other hand, the values are updated automatically
  1.1449    /// whenever the digraph changes.
  1.1450    ///
  1.1451 -  /// \warning Besides addNode() and addArc(), a digraph structure may provide
  1.1452 -  /// alternative ways to modify the digraph. The correct behavior of OutDegMap
  1.1453 -  /// is not guarantied if these additional features are used. For example
  1.1454 -  /// the functions \ref ListDigraph::changeSource() "changeSource()",
  1.1455 +  /// \warning Besides \c addNode() and \c addArc(), a digraph structure 
  1.1456 +  /// may provide alternative ways to modify the digraph.
  1.1457 +  /// The correct behavior of OutDegMap is not guarantied if these additional
  1.1458 +  /// features are used. For example the functions
  1.1459 +  /// \ref ListDigraph::changeSource() "changeSource()",
  1.1460    /// \ref ListDigraph::changeTarget() "changeTarget()" and
  1.1461    /// \ref ListDigraph::reverseArc() "reverseArc()"
  1.1462    /// of \ref ListDigraph will \e not update the degree values correctly.
  1.1463    ///
  1.1464    /// \sa InDegMap
  1.1465 -
  1.1466 -  template <typename _Digraph>
  1.1467 +  template <typename GR>
  1.1468    class OutDegMap
  1.1469 -    : protected ItemSetTraits<_Digraph, typename _Digraph::Arc>
  1.1470 +    : protected ItemSetTraits<GR, typename GR::Arc>
  1.1471        ::ItemNotifier::ObserverBase {
  1.1472  
  1.1473    public:
  1.1474  
  1.1475 -    typedef _Digraph Digraph;
  1.1476 +    /// The graph type of OutDegMap
  1.1477 +    typedef GR Graph;
  1.1478 +    typedef GR Digraph;
  1.1479 +    /// The key type
  1.1480 +    typedef typename Digraph::Node Key;
  1.1481 +    /// The value type
  1.1482      typedef int Value;
  1.1483 -    typedef typename Digraph::Node Key;
  1.1484  
  1.1485      typedef typename ItemSetTraits<Digraph, typename Digraph::Arc>
  1.1486      ::ItemNotifier::ObserverBase Parent;
  1.1487 @@ -2645,9 +2673,9 @@
  1.1488  
  1.1489      /// \brief Constructor.
  1.1490      ///
  1.1491 -    /// Constructor for creating out-degree map.
  1.1492 -    explicit OutDegMap(const Digraph& digraph)
  1.1493 -      : _digraph(digraph), _deg(digraph) {
  1.1494 +    /// Constructor for creating an out-degree map.
  1.1495 +    explicit OutDegMap(const Digraph& graph)
  1.1496 +      : _digraph(graph), _deg(graph) {
  1.1497        Parent::attach(_digraph.notifier(typename Digraph::Arc()));
  1.1498  
  1.1499        for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
  1.1500 @@ -2655,6 +2683,8 @@
  1.1501        }
  1.1502      }
  1.1503  
  1.1504 +    /// \brief Gives back the out-degree of a Node.
  1.1505 +    ///
  1.1506      /// Gives back the out-degree of a Node.
  1.1507      int operator[](const Key& key) const {
  1.1508        return _deg[key];
  1.1509 @@ -2701,6 +2731,56 @@
  1.1510      AutoNodeMap _deg;
  1.1511    };
  1.1512  
  1.1513 +  /// \brief Potential difference map
  1.1514 +  ///
  1.1515 +  /// PotentialDifferenceMap returns the difference between the potentials of
  1.1516 +  /// the source and target nodes of each arc in a digraph, i.e. it returns
  1.1517 +  /// \code
  1.1518 +  ///   potential[gr.target(arc)] - potential[gr.source(arc)].
  1.1519 +  /// \endcode
  1.1520 +  /// \tparam GR The digraph type.
  1.1521 +  /// \tparam POT A node map storing the potentials.
  1.1522 +  template <typename GR, typename POT>
  1.1523 +  class PotentialDifferenceMap {
  1.1524 +  public:
  1.1525 +    /// Key type
  1.1526 +    typedef typename GR::Arc Key;
  1.1527 +    /// Value type
  1.1528 +    typedef typename POT::Value Value;
  1.1529 +
  1.1530 +    /// \brief Constructor
  1.1531 +    ///
  1.1532 +    /// Contructor of the map.
  1.1533 +    explicit PotentialDifferenceMap(const GR& gr,
  1.1534 +                                    const POT& potential)
  1.1535 +      : _digraph(gr), _potential(potential) {}
  1.1536 +
  1.1537 +    /// \brief Returns the potential difference for the given arc.
  1.1538 +    ///
  1.1539 +    /// Returns the potential difference for the given arc, i.e.
  1.1540 +    /// \code
  1.1541 +    ///   potential[gr.target(arc)] - potential[gr.source(arc)].
  1.1542 +    /// \endcode
  1.1543 +    Value operator[](const Key& arc) const {
  1.1544 +      return _potential[_digraph.target(arc)] -
  1.1545 +        _potential[_digraph.source(arc)];
  1.1546 +    }
  1.1547 +
  1.1548 +  private:
  1.1549 +    const GR& _digraph;
  1.1550 +    const POT& _potential;
  1.1551 +  };
  1.1552 +
  1.1553 +  /// \brief Returns a PotentialDifferenceMap.
  1.1554 +  ///
  1.1555 +  /// This function just returns a PotentialDifferenceMap.
  1.1556 +  /// \relates PotentialDifferenceMap
  1.1557 +  template <typename GR, typename POT>
  1.1558 +  PotentialDifferenceMap<GR, POT>
  1.1559 +  potentialDifferenceMap(const GR& gr, const POT& potential) {
  1.1560 +    return PotentialDifferenceMap<GR, POT>(gr, potential);
  1.1561 +  }
  1.1562 +
  1.1563    /// @}
  1.1564  }
  1.1565