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test/maps_test.cc
author Alpar Juttner <alpar@cs.elte.hu>
Tue, 26 Apr 2011 17:25:00 +0200
changeset 1059 4f9e5801224e
parent 956 141f9c0db4a3
child 1084 d303bfa8b1ed
child 1159 7fdaa05a69a1
permissions -rw-r--r--
Merge bugfix #420 
     1 /* -*- mode: C++; indent-tabs-mode: nil; -*-

     2  *

     3  * This file is a part of LEMON, a generic C++ optimization library.

     4  *

     5  * Copyright (C) 2003-2010

     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).

     8  *

     9  * Permission to use, modify and distribute this software is granted

    10  * provided that this copyright notice appears in all copies. For

    11  * precise terms see the accompanying LICENSE file.

    12  *

    13  * This software is provided "AS IS" with no warranty of any kind,

    14  * express or implied, and with no claim as to its suitability for any

    15  * purpose.

    16  *

    17  */

    18 

    19 #include <deque>

    20 #include <set>

    21 

    22 #include <lemon/concept_check.h>

    23 #include <lemon/concepts/maps.h>

    24 #include <lemon/maps.h>

    25 #include <lemon/list_graph.h>

    26 #include <lemon/smart_graph.h>

    27 #include <lemon/adaptors.h>

    28 #include <lemon/dfs.h>

    29 #include <algorithm>

    30 

    31 #include "test_tools.h"

    32 

    33 using namespace lemon;

    34 using namespace lemon::concepts;

    35 

    36 struct A {};

    37 inline bool operator<(A, A) { return true; }

    38 struct B {};

    39 

    40 class C {

    41   int _x;

    42 public:

    43   C(int x) : _x(x) {}

    44   int get() const { return _x; }

    45 };

    46 inline bool operator<(C c1, C c2) { return c1.get() < c2.get(); }

    47 inline bool operator==(C c1, C c2) { return c1.get() == c2.get(); }

    48 

    49 C createC(int x) { return C(x); }

    50 

    51 template <typename T>

    52 class Less {

    53   T _t;

    54 public:

    55   Less(T t): _t(t) {}

    56   bool operator()(const T& t) const { return t < _t; }

    57 };

    58 

    59 class F {

    60 public:

    61   typedef A argument_type;

    62   typedef B result_type;

    63 

    64   B operator()(const A&) const { return B(); }

    65 private:

    66   F& operator=(const F&);

    67 };

    68 

    69 int func(A) { return 3; }

    70 

    71 int binc(int a, B) { return a+1; }

    72 

    73 template <typename T>

    74 class Sum {

    75   T& _sum;

    76 public:

    77   Sum(T& sum) : _sum(sum) {}

    78   void operator()(const T& t) { _sum += t; }

    79 };

    80 

    81 typedef ReadMap<A, double> DoubleMap;

    82 typedef ReadWriteMap<A, double> DoubleWriteMap;

    83 typedef ReferenceMap<A, double, double&, const double&> DoubleRefMap;

    84 

    85 typedef ReadMap<A, bool> BoolMap;

    86 typedef ReadWriteMap<A, bool> BoolWriteMap;

    87 typedef ReferenceMap<A, bool, bool&, const bool&> BoolRefMap;

    88 

    89 int main()

    90 {

    91   // Map concepts

    92   checkConcept<ReadMap<A,B>, ReadMap<A,B> >();

    93   checkConcept<ReadMap<A,C>, ReadMap<A,C> >();

    94   checkConcept<WriteMap<A,B>, WriteMap<A,B> >();

    95   checkConcept<WriteMap<A,C>, WriteMap<A,C> >();

    96   checkConcept<ReadWriteMap<A,B>, ReadWriteMap<A,B> >();

    97   checkConcept<ReadWriteMap<A,C>, ReadWriteMap<A,C> >();

    98   checkConcept<ReferenceMap<A,B,B&,const B&>, ReferenceMap<A,B,B&,const B&> >();

    99   checkConcept<ReferenceMap<A,C,C&,const C&>, ReferenceMap<A,C,C&,const C&> >();

   100 

   101   // NullMap

   102   {

   103     checkConcept<ReadWriteMap<A,B>, NullMap<A,B> >();

   104     NullMap<A,B> map1;

   105     NullMap<A,B> map2 = map1;

   106     map1 = nullMap<A,B>();

   107   }

   108 

   109   // ConstMap

   110   {

   111     checkConcept<ReadWriteMap<A,B>, ConstMap<A,B> >();

   112     checkConcept<ReadWriteMap<A,C>, ConstMap<A,C> >();

   113     ConstMap<A,B> map1;

   114     ConstMap<A,B> map2 = B();

   115     ConstMap<A,B> map3 = map1;

   116     map1 = constMap<A>(B());

   117     map1 = constMap<A,B>();

   118     map1.setAll(B());

   119     ConstMap<A,C> map4(C(1));

   120     ConstMap<A,C> map5 = map4;

   121     map4 = constMap<A>(C(2));

   122     map4.setAll(C(3));

   123 

   124     checkConcept<ReadWriteMap<A,int>, ConstMap<A,int> >();

   125     check(constMap<A>(10)[A()] == 10, "Something is wrong with ConstMap");

   126 

   127     checkConcept<ReadWriteMap<A,int>, ConstMap<A,Const<int,10> > >();

   128     ConstMap<A,Const<int,10> > map6;

   129     ConstMap<A,Const<int,10> > map7 = map6;

   130     map6 = constMap<A,int,10>();

   131     map7 = constMap<A,Const<int,10> >();

   132     check(map6[A()] == 10 && map7[A()] == 10,

   133           "Something is wrong with ConstMap");

   134   }

   135 

   136   // IdentityMap

   137   {

   138     checkConcept<ReadMap<A,A>, IdentityMap<A> >();

   139     IdentityMap<A> map1;

   140     IdentityMap<A> map2 = map1;

   141     map1 = identityMap<A>();

   142 

   143     checkConcept<ReadMap<double,double>, IdentityMap<double> >();

   144     check(identityMap<double>()[1.0] == 1.0 &&

   145           identityMap<double>()[3.14] == 3.14,

   146           "Something is wrong with IdentityMap");

   147   }

   148 

   149   // RangeMap

   150   {

   151     checkConcept<ReferenceMap<int,B,B&,const B&>, RangeMap<B> >();

   152     RangeMap<B> map1;

   153     RangeMap<B> map2(10);

   154     RangeMap<B> map3(10,B());

   155     RangeMap<B> map4 = map1;

   156     RangeMap<B> map5 = rangeMap<B>();

   157     RangeMap<B> map6 = rangeMap<B>(10);

   158     RangeMap<B> map7 = rangeMap(10,B());

   159 

   160     checkConcept< ReferenceMap<int, double, double&, const double&>,

   161                   RangeMap<double> >();

   162     std::vector<double> v(10, 0);

   163     v[5] = 100;

   164     RangeMap<double> map8(v);

   165     RangeMap<double> map9 = rangeMap(v);

   166     check(map9.size() == 10 && map9[2] == 0 && map9[5] == 100,

   167           "Something is wrong with RangeMap");

   168   }

   169 

   170   // SparseMap

   171   {

   172     checkConcept<ReferenceMap<A,B,B&,const B&>, SparseMap<A,B> >();

   173     SparseMap<A,B> map1;

   174     SparseMap<A,B> map2 = B();

   175     SparseMap<A,B> map3 = sparseMap<A,B>();

   176     SparseMap<A,B> map4 = sparseMap<A>(B());

   177 

   178     checkConcept< ReferenceMap<double, int, int&, const int&>,

   179                   SparseMap<double, int> >();

   180     std::map<double, int> m;

   181     SparseMap<double, int> map5(m);

   182     SparseMap<double, int> map6(m,10);

   183     SparseMap<double, int> map7 = sparseMap(m);

   184     SparseMap<double, int> map8 = sparseMap(m,10);

   185 

   186     check(map5[1.0] == 0 && map5[3.14] == 0 &&

   187           map6[1.0] == 10 && map6[3.14] == 10,

   188           "Something is wrong with SparseMap");

   189     map5[1.0] = map6[3.14] = 100;

   190     check(map5[1.0] == 100 && map5[3.14] == 0 &&

   191           map6[1.0] == 10 && map6[3.14] == 100,

   192           "Something is wrong with SparseMap");

   193   }

   194 

   195   // ComposeMap

   196   {

   197     typedef ComposeMap<DoubleMap, ReadMap<B,A> > CompMap;

   198     checkConcept<ReadMap<B,double>, CompMap>();

   199     CompMap map1 = CompMap(DoubleMap(),ReadMap<B,A>());

   200     CompMap map2 = composeMap(DoubleMap(), ReadMap<B,A>());

   201 

   202     SparseMap<double, bool> m1(false); m1[3.14] = true;

   203     RangeMap<double> m2(2); m2[0] = 3.0; m2[1] = 3.14;

   204     check(!composeMap(m1,m2)[0] && composeMap(m1,m2)[1],

   205           "Something is wrong with ComposeMap")

   206   }

   207 

   208   // CombineMap

   209   {

   210     typedef CombineMap<DoubleMap, DoubleMap, std::plus<double> > CombMap;

   211     checkConcept<ReadMap<A,double>, CombMap>();

   212     CombMap map1 = CombMap(DoubleMap(), DoubleMap());

   213     CombMap map2 = combineMap(DoubleMap(), DoubleMap(), std::plus<double>());

   214 

   215     check(combineMap(constMap<B,int,2>(), identityMap<B>(), &binc)[B()] == 3,

   216           "Something is wrong with CombineMap");

   217   }

   218 

   219   // FunctorToMap, MapToFunctor

   220   {

   221     checkConcept<ReadMap<A,B>, FunctorToMap<F,A,B> >();

   222     checkConcept<ReadMap<A,B>, FunctorToMap<F> >();

   223     FunctorToMap<F> map1;

   224     FunctorToMap<F> map2 = FunctorToMap<F>(F());

   225     B b = functorToMap(F())[A()];

   226 

   227     checkConcept<ReadMap<A,B>, MapToFunctor<ReadMap<A,B> > >();

   228     MapToFunctor<ReadMap<A,B> > map =

   229       MapToFunctor<ReadMap<A,B> >(ReadMap<A,B>());

   230 

   231     check(functorToMap(&func)[A()] == 3,

   232           "Something is wrong with FunctorToMap");

   233     check(mapToFunctor(constMap<A,int>(2))(A()) == 2,

   234           "Something is wrong with MapToFunctor");

   235     check(mapToFunctor(functorToMap(&func))(A()) == 3 &&

   236           mapToFunctor(functorToMap(&func))[A()] == 3,

   237           "Something is wrong with FunctorToMap or MapToFunctor");

   238     check(functorToMap(mapToFunctor(constMap<A,int>(2)))[A()] == 2,

   239           "Something is wrong with FunctorToMap or MapToFunctor");

   240   }

   241 

   242   // ConvertMap

   243   {

   244     checkConcept<ReadMap<double,double>,

   245       ConvertMap<ReadMap<double, int>, double> >();

   246     ConvertMap<RangeMap<bool>, int> map1(rangeMap(1, true));

   247     ConvertMap<RangeMap<bool>, int> map2 = convertMap<int>(rangeMap(2, false));

   248   }

   249 

   250   // ForkMap

   251   {

   252     checkConcept<DoubleWriteMap, ForkMap<DoubleWriteMap, DoubleWriteMap> >();

   253 

   254     typedef RangeMap<double> RM;

   255     typedef SparseMap<int, double> SM;

   256     RM m1(10, -1);

   257     SM m2(-1);

   258     checkConcept<ReadWriteMap<int, double>, ForkMap<RM, SM> >();

   259     checkConcept<ReadWriteMap<int, double>, ForkMap<SM, RM> >();

   260     ForkMap<RM, SM> map1(m1,m2);

   261     ForkMap<SM, RM> map2 = forkMap(m2,m1);

   262     map2.set(5, 10);

   263     check(m1[1] == -1 && m1[5] == 10 && m2[1] == -1 &&

   264           m2[5] == 10 && map2[1] == -1 && map2[5] == 10,

   265           "Something is wrong with ForkMap");

   266   }

   267 

   268   // Arithmetic maps:

   269   // - AddMap, SubMap, MulMap, DivMap

   270   // - ShiftMap, ShiftWriteMap, ScaleMap, ScaleWriteMap

   271   // - NegMap, NegWriteMap, AbsMap

   272   {

   273     checkConcept<DoubleMap, AddMap<DoubleMap,DoubleMap> >();

   274     checkConcept<DoubleMap, SubMap<DoubleMap,DoubleMap> >();

   275     checkConcept<DoubleMap, MulMap<DoubleMap,DoubleMap> >();

   276     checkConcept<DoubleMap, DivMap<DoubleMap,DoubleMap> >();

   277 

   278     ConstMap<int, double> c1(1.0), c2(3.14);

   279     IdentityMap<int> im;

   280     ConvertMap<IdentityMap<int>, double> id(im);

   281     check(addMap(c1,id)[0] == 1.0  && addMap(c1,id)[10] == 11.0,

   282           "Something is wrong with AddMap");

   283     check(subMap(id,c1)[0] == -1.0 && subMap(id,c1)[10] == 9.0,

   284           "Something is wrong with SubMap");

   285     check(mulMap(id,c2)[0] == 0    && mulMap(id,c2)[2]  == 6.28,

   286           "Something is wrong with MulMap");

   287     check(divMap(c2,id)[1] == 3.14 && divMap(c2,id)[2]  == 1.57,

   288           "Something is wrong with DivMap");

   289 

   290     checkConcept<DoubleMap, ShiftMap<DoubleMap> >();

   291     checkConcept<DoubleWriteMap, ShiftWriteMap<DoubleWriteMap> >();

   292     checkConcept<DoubleMap, ScaleMap<DoubleMap> >();

   293     checkConcept<DoubleWriteMap, ScaleWriteMap<DoubleWriteMap> >();

   294     checkConcept<DoubleMap, NegMap<DoubleMap> >();

   295     checkConcept<DoubleWriteMap, NegWriteMap<DoubleWriteMap> >();

   296     checkConcept<DoubleMap, AbsMap<DoubleMap> >();

   297 

   298     check(shiftMap(id, 2.0)[1] == 3.0 && shiftMap(id, 2.0)[10] == 12.0,

   299           "Something is wrong with ShiftMap");

   300     check(shiftWriteMap(id, 2.0)[1] == 3.0 &&

   301           shiftWriteMap(id, 2.0)[10] == 12.0,

   302           "Something is wrong with ShiftWriteMap");

   303     check(scaleMap(id, 2.0)[1] == 2.0 && scaleMap(id, 2.0)[10] == 20.0,

   304           "Something is wrong with ScaleMap");

   305     check(scaleWriteMap(id, 2.0)[1] == 2.0 &&

   306           scaleWriteMap(id, 2.0)[10] == 20.0,

   307           "Something is wrong with ScaleWriteMap");

   308     check(negMap(id)[1] == -1.0 && negMap(id)[-10] == 10.0,

   309           "Something is wrong with NegMap");

   310     check(negWriteMap(id)[1] == -1.0 && negWriteMap(id)[-10] == 10.0,

   311           "Something is wrong with NegWriteMap");

   312     check(absMap(id)[1] == 1.0 && absMap(id)[-10] == 10.0,

   313           "Something is wrong with AbsMap");

   314   }

   315 

   316   // Logical maps:

   317   // - TrueMap, FalseMap

   318   // - AndMap, OrMap

   319   // - NotMap, NotWriteMap

   320   // - EqualMap, LessMap

   321   {

   322     checkConcept<BoolMap, TrueMap<A> >();

   323     checkConcept<BoolMap, FalseMap<A> >();

   324     checkConcept<BoolMap, AndMap<BoolMap,BoolMap> >();

   325     checkConcept<BoolMap, OrMap<BoolMap,BoolMap> >();

   326     checkConcept<BoolMap, NotMap<BoolMap> >();

   327     checkConcept<BoolWriteMap, NotWriteMap<BoolWriteMap> >();

   328     checkConcept<BoolMap, EqualMap<DoubleMap,DoubleMap> >();

   329     checkConcept<BoolMap, LessMap<DoubleMap,DoubleMap> >();

   330 

   331     TrueMap<int> tm;

   332     FalseMap<int> fm;

   333     RangeMap<bool> rm(2);

   334     rm[0] = true; rm[1] = false;

   335     check(andMap(tm,rm)[0] && !andMap(tm,rm)[1] &&

   336           !andMap(fm,rm)[0] && !andMap(fm,rm)[1],

   337           "Something is wrong with AndMap");

   338     check(orMap(tm,rm)[0] && orMap(tm,rm)[1] &&

   339           orMap(fm,rm)[0] && !orMap(fm,rm)[1],

   340           "Something is wrong with OrMap");

   341     check(!notMap(rm)[0] && notMap(rm)[1],

   342           "Something is wrong with NotMap");

   343     check(!notWriteMap(rm)[0] && notWriteMap(rm)[1],

   344           "Something is wrong with NotWriteMap");

   345 

   346     ConstMap<int, double> cm(2.0);

   347     IdentityMap<int> im;

   348     ConvertMap<IdentityMap<int>, double> id(im);

   349     check(lessMap(id,cm)[1] && !lessMap(id,cm)[2] && !lessMap(id,cm)[3],

   350           "Something is wrong with LessMap");

   351     check(!equalMap(id,cm)[1] && equalMap(id,cm)[2] && !equalMap(id,cm)[3],

   352           "Something is wrong with EqualMap");

   353   }

   354 

   355   // LoggerBoolMap

   356   {

   357     typedef std::vector<int> vec;

   358     checkConcept<WriteMap<int, bool>, LoggerBoolMap<vec::iterator> >();

   359     checkConcept<WriteMap<int, bool>,

   360                  LoggerBoolMap<std::back_insert_iterator<vec> > >();

   361 

   362     vec v1;

   363     vec v2(10);

   364     LoggerBoolMap<std::back_insert_iterator<vec> >

   365       map1(std::back_inserter(v1));

   366     LoggerBoolMap<vec::iterator> map2(v2.begin());

   367     map1.set(10, false);

   368     map1.set(20, true);   map2.set(20, true);

   369     map1.set(30, false);  map2.set(40, false);

   370     map1.set(50, true);   map2.set(50, true);

   371     map1.set(60, true);   map2.set(60, true);

   372     check(v1.size() == 3 && v2.size() == 10 &&

   373           v1[0]==20 && v1[1]==50 && v1[2]==60 &&

   374           v2[0]==20 && v2[1]==50 && v2[2]==60,

   375           "Something is wrong with LoggerBoolMap");

   376 

   377     int i = 0;

   378     for ( LoggerBoolMap<vec::iterator>::Iterator it = map2.begin();

   379           it != map2.end(); ++it )

   380       check(v1[i++] == *it, "Something is wrong with LoggerBoolMap");

   381 

   382     typedef ListDigraph Graph;

   383     DIGRAPH_TYPEDEFS(Graph);

   384     Graph gr;

   385 

   386     Node n0 = gr.addNode();

   387     Node n1 = gr.addNode();

   388     Node n2 = gr.addNode();

   389     Node n3 = gr.addNode();

   390 

   391     gr.addArc(n3, n0);

   392     gr.addArc(n3, n2);

   393     gr.addArc(n0, n2);

   394     gr.addArc(n2, n1);

   395     gr.addArc(n0, n1);

   396 

   397     {

   398       std::vector<Node> v;

   399       dfs(gr).processedMap(loggerBoolMap(std::back_inserter(v))).run();

   400 

   401       check(v.size()==4 && v[0]==n1 && v[1]==n2 && v[2]==n0 && v[3]==n3,

   402             "Something is wrong with LoggerBoolMap");

   403     }

   404     {

   405       std::vector<Node> v(countNodes(gr));

   406       dfs(gr).processedMap(loggerBoolMap(v.begin())).run();

   407 

   408       check(v.size()==4 && v[0]==n1 && v[1]==n2 && v[2]==n0 && v[3]==n3,

   409             "Something is wrong with LoggerBoolMap");

   410     }

   411   }

   412 

   413   // IdMap, RangeIdMap

   414   {

   415     typedef ListDigraph Graph;

   416     DIGRAPH_TYPEDEFS(Graph);

   417 

   418     checkConcept<ReadMap<Node, int>, IdMap<Graph, Node> >();

   419     checkConcept<ReadMap<Arc, int>, IdMap<Graph, Arc> >();

   420     checkConcept<ReadMap<Node, int>, RangeIdMap<Graph, Node> >();

   421     checkConcept<ReadMap<Arc, int>, RangeIdMap<Graph, Arc> >();

   422 

   423     Graph gr;

   424     IdMap<Graph, Node> nmap(gr);

   425     IdMap<Graph, Arc> amap(gr);

   426     RangeIdMap<Graph, Node> nrmap(gr);

   427     RangeIdMap<Graph, Arc> armap(gr);

   428 

   429     Node n0 = gr.addNode();

   430     Node n1 = gr.addNode();

   431     Node n2 = gr.addNode();

   432 

   433     Arc a0 = gr.addArc(n0, n1);

   434     Arc a1 = gr.addArc(n0, n2);

   435     Arc a2 = gr.addArc(n2, n1);

   436     Arc a3 = gr.addArc(n2, n0);

   437 

   438     check(nmap[n0] == gr.id(n0) && nmap(gr.id(n0)) == n0, "Wrong IdMap");

   439     check(nmap[n1] == gr.id(n1) && nmap(gr.id(n1)) == n1, "Wrong IdMap");

   440     check(nmap[n2] == gr.id(n2) && nmap(gr.id(n2)) == n2, "Wrong IdMap");

   441 

   442     check(amap[a0] == gr.id(a0) && amap(gr.id(a0)) == a0, "Wrong IdMap");

   443     check(amap[a1] == gr.id(a1) && amap(gr.id(a1)) == a1, "Wrong IdMap");

   444     check(amap[a2] == gr.id(a2) && amap(gr.id(a2)) == a2, "Wrong IdMap");

   445     check(amap[a3] == gr.id(a3) && amap(gr.id(a3)) == a3, "Wrong IdMap");

   446 

   447     check(nmap.inverse()[gr.id(n0)] == n0, "Wrong IdMap::InverseMap");

   448     check(amap.inverse()[gr.id(a0)] == a0, "Wrong IdMap::InverseMap");

   449 

   450     check(nrmap.size() == 3 && armap.size() == 4,

   451           "Wrong RangeIdMap::size()");

   452 

   453     check(nrmap[n0] == 0 && nrmap(0) == n0, "Wrong RangeIdMap");

   454     check(nrmap[n1] == 1 && nrmap(1) == n1, "Wrong RangeIdMap");

   455     check(nrmap[n2] == 2 && nrmap(2) == n2, "Wrong RangeIdMap");

   456 

   457     check(armap[a0] == 0 && armap(0) == a0, "Wrong RangeIdMap");

   458     check(armap[a1] == 1 && armap(1) == a1, "Wrong RangeIdMap");

   459     check(armap[a2] == 2 && armap(2) == a2, "Wrong RangeIdMap");

   460     check(armap[a3] == 3 && armap(3) == a3, "Wrong RangeIdMap");

   461 

   462     check(nrmap.inverse()[0] == n0, "Wrong RangeIdMap::InverseMap");

   463     check(armap.inverse()[0] == a0, "Wrong RangeIdMap::InverseMap");

   464 

   465     gr.erase(n1);

   466 

   467     if (nrmap[n0] == 1) nrmap.swap(n0, n2);

   468     nrmap.swap(n2, n0);

   469     if (armap[a1] == 1) armap.swap(a1, a3);

   470     armap.swap(a3, a1);

   471 

   472     check(nrmap.size() == 2 && armap.size() == 2,

   473           "Wrong RangeIdMap::size()");

   474 

   475     check(nrmap[n0] == 1 && nrmap(1) == n0, "Wrong RangeIdMap");

   476     check(nrmap[n2] == 0 && nrmap(0) == n2, "Wrong RangeIdMap");

   477 

   478     check(armap[a1] == 1 && armap(1) == a1, "Wrong RangeIdMap");

   479     check(armap[a3] == 0 && armap(0) == a3, "Wrong RangeIdMap");

   480 

   481     check(nrmap.inverse()[0] == n2, "Wrong RangeIdMap::InverseMap");

   482     check(armap.inverse()[0] == a3, "Wrong RangeIdMap::InverseMap");

   483   }

   484 

   485   // SourceMap, TargetMap, ForwardMap, BackwardMap, InDegMap, OutDegMap

   486   {

   487     typedef ListGraph Graph;

   488     GRAPH_TYPEDEFS(Graph);

   489 

   490     checkConcept<ReadMap<Arc, Node>, SourceMap<Graph> >();

   491     checkConcept<ReadMap<Arc, Node>, TargetMap<Graph> >();

   492     checkConcept<ReadMap<Edge, Arc>, ForwardMap<Graph> >();

   493     checkConcept<ReadMap<Edge, Arc>, BackwardMap<Graph> >();

   494     checkConcept<ReadMap<Node, int>, InDegMap<Graph> >();

   495     checkConcept<ReadMap<Node, int>, OutDegMap<Graph> >();

   496 

   497     Graph gr;

   498     Node n0 = gr.addNode();

   499     Node n1 = gr.addNode();

   500     Node n2 = gr.addNode();

   501 

   502     gr.addEdge(n0,n1);

   503     gr.addEdge(n1,n2);

   504     gr.addEdge(n0,n2);

   505     gr.addEdge(n2,n1);

   506     gr.addEdge(n1,n2);

   507     gr.addEdge(n0,n1);

   508 

   509     for (EdgeIt e(gr); e != INVALID; ++e) {

   510       check(forwardMap(gr)[e] == gr.direct(e, true), "Wrong ForwardMap");

   511       check(backwardMap(gr)[e] == gr.direct(e, false), "Wrong BackwardMap");

   512     }

   513 

   514     check(mapCompare(gr,

   515           sourceMap(orienter(gr, constMap<Edge, bool>(true))),

   516           targetMap(orienter(gr, constMap<Edge, bool>(false)))),

   517           "Wrong SourceMap or TargetMap");

   518 

   519     typedef Orienter<Graph, const ConstMap<Edge, bool> > Digraph;

   520     Digraph dgr(gr, constMap<Edge, bool>(true));

   521     OutDegMap<Digraph> odm(dgr);

   522     InDegMap<Digraph> idm(dgr);

   523 

   524     check(odm[n0] == 3 && odm[n1] == 2 && odm[n2] == 1, "Wrong OutDegMap");

   525     check(idm[n0] == 0 && idm[n1] == 3 && idm[n2] == 3, "Wrong InDegMap");

   526 

   527     gr.addEdge(n2, n0);

   528 

   529     check(odm[n0] == 3 && odm[n1] == 2 && odm[n2] == 2, "Wrong OutDegMap");

   530     check(idm[n0] == 1 && idm[n1] == 3 && idm[n2] == 3, "Wrong InDegMap");

   531   }

   532 

   533   // CrossRefMap

   534   {

   535     typedef ListDigraph Graph;

   536     DIGRAPH_TYPEDEFS(Graph);

   537 

   538     checkConcept<ReadWriteMap<Node, int>,

   539                  CrossRefMap<Graph, Node, int> >();

   540     checkConcept<ReadWriteMap<Node, bool>,

   541                  CrossRefMap<Graph, Node, bool> >();

   542     checkConcept<ReadWriteMap<Node, double>,

   543                  CrossRefMap<Graph, Node, double> >();

   544 

   545     Graph gr;

   546     typedef CrossRefMap<Graph, Node, char> CRMap;

   547     CRMap map(gr);

   548 

   549     Node n0 = gr.addNode();

   550     Node n1 = gr.addNode();

   551     Node n2 = gr.addNode();

   552 

   553     map.set(n0, 'A');

   554     map.set(n1, 'B');

   555     map.set(n2, 'C');

   556 

   557     check(map[n0] == 'A' && map('A') == n0 && map.inverse()['A'] == n0,

   558           "Wrong CrossRefMap");

   559     check(map[n1] == 'B' && map('B') == n1 && map.inverse()['B'] == n1,

   560           "Wrong CrossRefMap");

   561     check(map[n2] == 'C' && map('C') == n2 && map.inverse()['C'] == n2,

   562           "Wrong CrossRefMap");

   563     check(map.count('A') == 1 && map.count('B') == 1 && map.count('C') == 1,

   564           "Wrong CrossRefMap::count()");

   565 

   566     CRMap::ValueIt it = map.beginValue();

   567     check(*it++ == 'A' && *it++ == 'B' && *it++ == 'C' &&

   568           it == map.endValue(), "Wrong value iterator");

   569 

   570     map.set(n2, 'A');

   571 

   572     check(map[n0] == 'A' && map[n1] == 'B' && map[n2] == 'A',

   573           "Wrong CrossRefMap");

   574     check(map('A') == n0 && map.inverse()['A'] == n0, "Wrong CrossRefMap");

   575     check(map('B') == n1 && map.inverse()['B'] == n1, "Wrong CrossRefMap");

   576     check(map('C') == INVALID && map.inverse()['C'] == INVALID,

   577           "Wrong CrossRefMap");

   578     check(map.count('A') == 2 && map.count('B') == 1 && map.count('C') == 0,

   579           "Wrong CrossRefMap::count()");

   580 

   581     it = map.beginValue();

   582     check(*it++ == 'A' && *it++ == 'A' && *it++ == 'B' &&

   583           it == map.endValue(), "Wrong value iterator");

   584 

   585     map.set(n0, 'C');

   586 

   587     check(map[n0] == 'C' && map[n1] == 'B' && map[n2] == 'A',

   588           "Wrong CrossRefMap");

   589     check(map('A') == n2 && map.inverse()['A'] == n2, "Wrong CrossRefMap");

   590     check(map('B') == n1 && map.inverse()['B'] == n1, "Wrong CrossRefMap");

   591     check(map('C') == n0 && map.inverse()['C'] == n0, "Wrong CrossRefMap");

   592     check(map.count('A') == 1 && map.count('B') == 1 && map.count('C') == 1,

   593           "Wrong CrossRefMap::count()");

   594 

   595     it = map.beginValue();

   596     check(*it++ == 'A' && *it++ == 'B' && *it++ == 'C' &&

   597           it == map.endValue(), "Wrong value iterator");

   598   }

   599 

   600   // CrossRefMap

   601   {

   602     typedef SmartDigraph Graph;

   603     DIGRAPH_TYPEDEFS(Graph);

   604 

   605     checkConcept<ReadWriteMap<Node, int>,

   606                  CrossRefMap<Graph, Node, int> >();

   607 

   608     Graph gr;

   609     typedef CrossRefMap<Graph, Node, char> CRMap;

   610     typedef CRMap::ValueIterator ValueIt;

   611     CRMap map(gr);

   612 

   613     Node n0 = gr.addNode();

   614     Node n1 = gr.addNode();

   615     Node n2 = gr.addNode();

   616 

   617     map.set(n0, 'A');

   618     map.set(n1, 'B');

   619     map.set(n2, 'C');

   620     map.set(n2, 'A');

   621     map.set(n0, 'C');

   622 

   623     check(map[n0] == 'C' && map[n1] == 'B' && map[n2] == 'A',

   624           "Wrong CrossRefMap");

   625     check(map('A') == n2 && map.inverse()['A'] == n2, "Wrong CrossRefMap");

   626     check(map('B') == n1 && map.inverse()['B'] == n1, "Wrong CrossRefMap");

   627     check(map('C') == n0 && map.inverse()['C'] == n0, "Wrong CrossRefMap");

   628 

   629     ValueIt it = map.beginValue();

   630     check(*it++ == 'A' && *it++ == 'B' && *it++ == 'C' &&

   631           it == map.endValue(), "Wrong value iterator");

   632   }

   633 

   634   // Iterable bool map

   635   {

   636     typedef SmartGraph Graph;

   637     typedef SmartGraph::Node Item;

   638 

   639     typedef IterableBoolMap<SmartGraph, SmartGraph::Node> Ibm;

   640     checkConcept<ReferenceMap<Item, bool, bool&, const bool&>, Ibm>();

   641 

   642     const int num = 10;

   643     Graph g;

   644     Ibm map0(g, true);

   645     std::vector<Item> items;

   646     for (int i = 0; i < num; ++i) {

   647       items.push_back(g.addNode());

   648     }

   649 

   650     Ibm map1(g, true);

   651     int n = 0;

   652     for (Ibm::TrueIt it(map1); it != INVALID; ++it) {

   653       check(map1[static_cast<Item>(it)], "Wrong TrueIt");

   654       ++n;

   655     }

   656     check(n == num, "Wrong number");

   657 

   658     n = 0;

   659     for (Ibm::ItemIt it(map1, true); it != INVALID; ++it) {

   660         check(map1[static_cast<Item>(it)], "Wrong ItemIt for true");

   661         ++n;

   662     }

   663     check(n == num, "Wrong number");

   664     check(Ibm::FalseIt(map1) == INVALID, "Wrong FalseIt");

   665     check(Ibm::ItemIt(map1, false) == INVALID, "Wrong ItemIt for false");

   666 

   667     map1[items[5]] = true;

   668 

   669     n = 0;

   670     for (Ibm::ItemIt it(map1, true); it != INVALID; ++it) {

   671         check(map1[static_cast<Item>(it)], "Wrong ItemIt for true");

   672         ++n;

   673     }

   674     check(n == num, "Wrong number");

   675 

   676     map1[items[num / 2]] = false;

   677     check(map1[items[num / 2]] == false, "Wrong map value");

   678 

   679     n = 0;

   680     for (Ibm::TrueIt it(map1); it != INVALID; ++it) {

   681         check(map1[static_cast<Item>(it)], "Wrong TrueIt for true");

   682         ++n;

   683     }

   684     check(n == num - 1, "Wrong number");

   685 

   686     n = 0;

   687     for (Ibm::FalseIt it(map1); it != INVALID; ++it) {

   688         check(!map1[static_cast<Item>(it)], "Wrong FalseIt for true");

   689         ++n;

   690     }

   691     check(n == 1, "Wrong number");

   692 

   693     map1[items[0]] = false;

   694     check(map1[items[0]] == false, "Wrong map value");

   695 

   696     map1[items[num - 1]] = false;

   697     check(map1[items[num - 1]] == false, "Wrong map value");

   698 

   699     n = 0;

   700     for (Ibm::TrueIt it(map1); it != INVALID; ++it) {

   701         check(map1[static_cast<Item>(it)], "Wrong TrueIt for true");

   702         ++n;

   703     }

   704     check(n == num - 3, "Wrong number");

   705     check(map1.trueNum() == num - 3, "Wrong number");

   706 

   707     n = 0;

   708     for (Ibm::FalseIt it(map1); it != INVALID; ++it) {

   709         check(!map1[static_cast<Item>(it)], "Wrong FalseIt for true");

   710         ++n;

   711     }

   712     check(n == 3, "Wrong number");

   713     check(map1.falseNum() == 3, "Wrong number");

   714   }

   715 

   716   // Iterable int map

   717   {

   718     typedef SmartGraph Graph;

   719     typedef SmartGraph::Node Item;

   720     typedef IterableIntMap<SmartGraph, SmartGraph::Node> Iim;

   721 

   722     checkConcept<ReferenceMap<Item, int, int&, const int&>, Iim>();

   723 

   724     const int num = 10;

   725     Graph g;

   726     Iim map0(g, 0);

   727     std::vector<Item> items;

   728     for (int i = 0; i < num; ++i) {

   729       items.push_back(g.addNode());

   730     }

   731 

   732     Iim map1(g);

   733     check(map1.size() == 0, "Wrong size");

   734 

   735     for (int i = 0; i < num; ++i) {

   736       map1[items[i]] = i;

   737     }

   738     check(map1.size() == num, "Wrong size");

   739 

   740     for (int i = 0; i < num; ++i) {

   741       Iim::ItemIt it(map1, i);

   742       check(static_cast<Item>(it) == items[i], "Wrong value");

   743       ++it;

   744       check(static_cast<Item>(it) == INVALID, "Wrong value");

   745     }

   746 

   747     for (int i = 0; i < num; ++i) {

   748       map1[items[i]] = i % 2;

   749     }

   750     check(map1.size() == 2, "Wrong size");

   751 

   752     int n = 0;

   753     for (Iim::ItemIt it(map1, 0); it != INVALID; ++it) {

   754       check(map1[static_cast<Item>(it)] == 0, "Wrong value");

   755       ++n;

   756     }

   757     check(n == (num + 1) / 2, "Wrong number");

   758 

   759     for (Iim::ItemIt it(map1, 1); it != INVALID; ++it) {

   760       check(map1[static_cast<Item>(it)] == 1, "Wrong value");

   761       ++n;

   762     }

   763     check(n == num, "Wrong number");

   764 

   765   }

   766 

   767   // Iterable value map

   768   {

   769     typedef SmartGraph Graph;

   770     typedef SmartGraph::Node Item;

   771     typedef IterableValueMap<SmartGraph, SmartGraph::Node, double> Ivm;

   772 

   773     checkConcept<ReadWriteMap<Item, double>, Ivm>();

   774 

   775     const int num = 10;

   776     Graph g;

   777     Ivm map0(g, 0.0);

   778     std::vector<Item> items;

   779     for (int i = 0; i < num; ++i) {

   780       items.push_back(g.addNode());

   781     }

   782 

   783     Ivm map1(g, 0.0);

   784     check(distance(map1.beginValue(), map1.endValue()) == 1, "Wrong size");

   785     check(*map1.beginValue() == 0.0, "Wrong value");

   786 

   787     for (int i = 0; i < num; ++i) {

   788       map1.set(items[i], static_cast<double>(i));

   789     }

   790     check(distance(map1.beginValue(), map1.endValue()) == num, "Wrong size");

   791 

   792     for (int i = 0; i < num; ++i) {

   793       Ivm::ItemIt it(map1, static_cast<double>(i));

   794       check(static_cast<Item>(it) == items[i], "Wrong value");

   795       ++it;

   796       check(static_cast<Item>(it) == INVALID, "Wrong value");

   797     }

   798 

   799     for (Ivm::ValueIt vit = map1.beginValue();

   800          vit != map1.endValue(); ++vit) {

   801       check(map1[static_cast<Item>(Ivm::ItemIt(map1, *vit))] == *vit,

   802             "Wrong ValueIt");

   803     }

   804 

   805     for (int i = 0; i < num; ++i) {

   806       map1.set(items[i], static_cast<double>(i % 2));

   807     }

   808     check(distance(map1.beginValue(), map1.endValue()) == 2, "Wrong size");

   809 

   810     int n = 0;

   811     for (Ivm::ItemIt it(map1, 0.0); it != INVALID; ++it) {

   812       check(map1[static_cast<Item>(it)] == 0.0, "Wrong value");

   813       ++n;

   814     }

   815     check(n == (num + 1) / 2, "Wrong number");

   816 

   817     for (Ivm::ItemIt it(map1, 1.0); it != INVALID; ++it) {

   818       check(map1[static_cast<Item>(it)] == 1.0, "Wrong value");

   819       ++n;

   820     }

   821     check(n == num, "Wrong number");

   822 

   823   }

   824 

   825   // Graph map utilities:

   826   // mapMin(), mapMax(), mapMinValue(), mapMaxValue()

   827   // mapFind(), mapFindIf(), mapCount(), mapCountIf()

   828   // mapCopy(), mapCompare(), mapFill()

   829   {

   830     DIGRAPH_TYPEDEFS(SmartDigraph);

   831 

   832     SmartDigraph g;

   833     Node n1 = g.addNode();

   834     Node n2 = g.addNode();

   835     Node n3 = g.addNode();

   836 

   837     SmartDigraph::NodeMap<int> map1(g);

   838     SmartDigraph::ArcMap<char> map2(g);

   839     ConstMap<Node, A> cmap1 = A();

   840     ConstMap<Arc, C> cmap2 = C(0);

   841 

   842     map1[n1] = 10;

   843     map1[n2] = 5;

   844     map1[n3] = 12;

   845 

   846     // mapMin(), mapMax(), mapMinValue(), mapMaxValue()

   847     check(mapMin(g, map1) == n2, "Wrong mapMin()");

   848     check(mapMax(g, map1) == n3, "Wrong mapMax()");

   849     check(mapMin(g, map1, std::greater<int>()) == n3, "Wrong mapMin()");

   850     check(mapMax(g, map1, std::greater<int>()) == n2, "Wrong mapMax()");

   851     check(mapMinValue(g, map1) == 5, "Wrong mapMinValue()");

   852     check(mapMaxValue(g, map1) == 12, "Wrong mapMaxValue()");

   853 

   854     check(mapMin(g, map2) == INVALID, "Wrong mapMin()");

   855     check(mapMax(g, map2) == INVALID, "Wrong mapMax()");

   856 

   857     check(mapMin(g, cmap1) != INVALID, "Wrong mapMin()");

   858     check(mapMax(g, cmap2) == INVALID, "Wrong mapMax()");

   859 

   860     Arc a1 = g.addArc(n1, n2);

   861     Arc a2 = g.addArc(n1, n3);

   862     Arc a3 = g.addArc(n2, n3);

   863     Arc a4 = g.addArc(n3, n1);

   864 

   865     map2[a1] = 'b';

   866     map2[a2] = 'a';

   867     map2[a3] = 'b';

   868     map2[a4] = 'c';

   869 

   870     // mapMin(), mapMax(), mapMinValue(), mapMaxValue()

   871     check(mapMin(g, map2) == a2, "Wrong mapMin()");

   872     check(mapMax(g, map2) == a4, "Wrong mapMax()");

   873     check(mapMin(g, map2, std::greater<int>()) == a4, "Wrong mapMin()");

   874     check(mapMax(g, map2, std::greater<int>()) == a2, "Wrong mapMax()");

   875     check(mapMinValue(g, map2, std::greater<int>()) == 'c',

   876           "Wrong mapMinValue()");

   877     check(mapMaxValue(g, map2, std::greater<int>()) == 'a',

   878           "Wrong mapMaxValue()");

   879 

   880     check(mapMin(g, cmap1) != INVALID, "Wrong mapMin()");

   881     check(mapMax(g, cmap2) != INVALID, "Wrong mapMax()");

   882     check(mapMaxValue(g, cmap2) == C(0), "Wrong mapMaxValue()");

   883 

   884     check(mapMin(g, composeMap(functorToMap(&createC), map2)) == a2,

   885           "Wrong mapMin()");

   886     check(mapMax(g, composeMap(functorToMap(&createC), map2)) == a4,

   887           "Wrong mapMax()");

   888     check(mapMinValue(g, composeMap(functorToMap(&createC), map2)) == C('a'),

   889           "Wrong mapMinValue()");

   890     check(mapMaxValue(g, composeMap(functorToMap(&createC), map2)) == C('c'),

   891           "Wrong mapMaxValue()");

   892 

   893     // mapFind(), mapFindIf()

   894     check(mapFind(g, map1, 5) == n2, "Wrong mapFind()");

   895     check(mapFind(g, map1, 6) == INVALID, "Wrong mapFind()");

   896     check(mapFind(g, map2, 'a') == a2, "Wrong mapFind()");

   897     check(mapFind(g, map2, 'e') == INVALID, "Wrong mapFind()");

   898     check(mapFind(g, cmap2, C(0)) == ArcIt(g), "Wrong mapFind()");

   899     check(mapFind(g, cmap2, C(1)) == INVALID, "Wrong mapFind()");

   900 

   901     check(mapFindIf(g, map1, Less<int>(7)) == n2,

   902           "Wrong mapFindIf()");

   903     check(mapFindIf(g, map1, Less<int>(5)) == INVALID,

   904           "Wrong mapFindIf()");

   905     check(mapFindIf(g, map2, Less<char>('d')) == ArcIt(g),

   906           "Wrong mapFindIf()");

   907     check(mapFindIf(g, map2, Less<char>('a')) == INVALID,

   908           "Wrong mapFindIf()");

   909 

   910     // mapCount(), mapCountIf()

   911     check(mapCount(g, map1, 5) == 1, "Wrong mapCount()");

   912     check(mapCount(g, map1, 6) == 0, "Wrong mapCount()");

   913     check(mapCount(g, map2, 'a') == 1, "Wrong mapCount()");

   914     check(mapCount(g, map2, 'b') == 2, "Wrong mapCount()");

   915     check(mapCount(g, map2, 'e') == 0, "Wrong mapCount()");

   916     check(mapCount(g, cmap2, C(0)) == 4, "Wrong mapCount()");

   917     check(mapCount(g, cmap2, C(1)) == 0, "Wrong mapCount()");

   918 

   919     check(mapCountIf(g, map1, Less<int>(11)) == 2,

   920           "Wrong mapCountIf()");

   921     check(mapCountIf(g, map1, Less<int>(13)) == 3,

   922           "Wrong mapCountIf()");

   923     check(mapCountIf(g, map1, Less<int>(5)) == 0,

   924           "Wrong mapCountIf()");

   925     check(mapCountIf(g, map2, Less<char>('d')) == 4,

   926           "Wrong mapCountIf()");

   927     check(mapCountIf(g, map2, Less<char>('c')) == 3,

   928           "Wrong mapCountIf()");

   929     check(mapCountIf(g, map2, Less<char>('a')) == 0,

   930           "Wrong mapCountIf()");

   931 

   932     // MapIt, ConstMapIt

   933 /*

   934 These tests can be used after applying bugfix #330

   935     typedef SmartDigraph::NodeMap<int>::MapIt MapIt;

   936     typedef SmartDigraph::NodeMap<int>::ConstMapIt ConstMapIt;

   937     check(*std::min_element(MapIt(map1), MapIt(INVALID)) == 5,

   938           "Wrong NodeMap<>::MapIt");

   939     check(*std::max_element(ConstMapIt(map1), ConstMapIt(INVALID)) == 12,

   940           "Wrong NodeMap<>::MapIt");

   941 

   942     int sum = 0;

   943     std::for_each(MapIt(map1), MapIt(INVALID), Sum<int>(sum));

   944     check(sum == 27, "Wrong NodeMap<>::MapIt");

   945     std::for_each(ConstMapIt(map1), ConstMapIt(INVALID), Sum<int>(sum));

   946     check(sum == 54, "Wrong NodeMap<>::ConstMapIt");

   947 */

   948 

   949     // mapCopy(), mapCompare(), mapFill()

   950     check(mapCompare(g, map1, map1), "Wrong mapCompare()");

   951     check(mapCompare(g, cmap2, cmap2), "Wrong mapCompare()");

   952     check(mapCompare(g, map1, shiftMap(map1, 0)), "Wrong mapCompare()");

   953     check(mapCompare(g, map2, scaleMap(map2, 1)), "Wrong mapCompare()");

   954     check(!mapCompare(g, map1, shiftMap(map1, 1)), "Wrong mapCompare()");

   955 

   956     SmartDigraph::NodeMap<int> map3(g, 0);

   957     SmartDigraph::ArcMap<char> map4(g, 'a');

   958 

   959     check(!mapCompare(g, map1, map3), "Wrong mapCompare()");

   960     check(!mapCompare(g, map2, map4), "Wrong mapCompare()");

   961 

   962     mapCopy(g, map1, map3);

   963     mapCopy(g, map2, map4);

   964 

   965     check(mapCompare(g, map1, map3), "Wrong mapCompare() or mapCopy()");

   966     check(mapCompare(g, map2, map4), "Wrong mapCompare() or mapCopy()");

   967 

   968     Undirector<SmartDigraph> ug(g);

   969     Undirector<SmartDigraph>::EdgeMap<char> umap1(ug, 'x');

   970     Undirector<SmartDigraph>::ArcMap<double> umap2(ug, 3.14);

   971 

   972     check(!mapCompare(g, map2, umap1), "Wrong mapCompare() or mapCopy()");

   973     check(!mapCompare(g, umap1, map2), "Wrong mapCompare() or mapCopy()");

   974     check(!mapCompare(ug, map2, umap1), "Wrong mapCompare() or mapCopy()");

   975     check(!mapCompare(ug, umap1, map2), "Wrong mapCompare() or mapCopy()");

   976 

   977     mapCopy(g, map2, umap1);

   978 

   979     check(mapCompare(g, map2, umap1), "Wrong mapCompare() or mapCopy()");

   980     check(mapCompare(g, umap1, map2), "Wrong mapCompare() or mapCopy()");

   981     check(mapCompare(ug, map2, umap1), "Wrong mapCompare() or mapCopy()");

   982     check(mapCompare(ug, umap1, map2), "Wrong mapCompare() or mapCopy()");

   983 

   984     mapCopy(g, map2, umap1);

   985     mapCopy(g, umap1, map2);

   986     mapCopy(ug, map2, umap1);

   987     mapCopy(ug, umap1, map2);

   988 

   989     check(!mapCompare(ug, umap1, umap2), "Wrong mapCompare() or mapCopy()");

   990     mapCopy(ug, umap1, umap2);

   991     check(mapCompare(ug, umap1, umap2), "Wrong mapCompare() or mapCopy()");

   992 

   993     check(!mapCompare(g, map1, constMap<Node>(2)), "Wrong mapCompare()");

   994     mapFill(g, map1, 2);

   995     check(mapCompare(g, constMap<Node>(2), map1), "Wrong mapFill()");

   996 

   997     check(!mapCompare(g, map2, constMap<Arc>('z')), "Wrong mapCompare()");

   998     mapCopy(g, constMap<Arc>('z'), map2);

   999     check(mapCompare(g, constMap<Arc>('z'), map2), "Wrong mapCopy()");

  1000   }

  1001 

  1002   return 0;

  1003 }
lemon