libvtv/testsuite/libvtv.cc/template-list-iostream.cc

   1 // { dg-do run }
   2
   3 #include <assert.h>
   4 #include <iostream>
   5 #include <fstream>
   6
   7 using std::ofstream;
   8 using std::ifstream;
   9 using std::ios;
  10
  11 extern "C" int printf(const char *, ...);
  12
  13 class Subscriptor
  14 {
  15   public:
  16
  17   Subscriptor() : counter(1) {}
  18
  19   virtual ~Subscriptor()
  20   {
  21     counter--;
  22     assert(counter == 0);
  23   }
  24
  25   private:
  26     mutable int counter;
  27 };
  28
  29 template <int dim> struct Function
  30 {
  31   Function(int i): value(dim + i) {}
  32   int value;
  33 };
  34
  35 template <int dim> struct Triangulation
  36 {
  37
  38 };
  39
  40 template <int dim> struct Exercise_2_3
  41 {
  42   enum { DIM = dim };
  43 };
  44
  45   template <int dim>
  46   struct SetUpBase : public Subscriptor
  47   {
  48       virtual
  49       const Function<dim> get_boundary_values () const = 0;
  50
  51       virtual
  52       const Function<dim> get_right_hand_side () const = 0;
  53
  54     //      virtual
  55     //      void create_coarse_grid (Triangulation<dim> &coarse_grid) const = 0;
  56   };
  57
  58   template <class Traits, int dim>
  59   struct SetUp : public SetUpBase<dim>
  60   {
  61       SetUp () {};
  62
  63       virtual
  64       const Function<dim>  get_boundary_values () const
  65     { return Function<dim>(Traits::DIM); }
  66
  67       virtual
  68       const Function<dim>  get_right_hand_side () const
  69     { return Function<dim>(Traits::DIM); }
  70
  71     //      virtual
  72     //      void create_coarse_grid (Triangulation<dim> &coarse_grid) const;
  73
  74     //      static const typename Traits::BoundaryValues boundary_values;
  75     //      static const typename Traits::RightHandSide  right_hand_side;
  76   };
  77
  78
  79 void myread(std::istream * in)
  80 {
  81   char input_str[50] = "\0";
  82   if (in->good())
  83     (*in) >> input_str;
  84   std::cout << input_str << std::endl;
  85   delete in;
  86 }
  87
  88
  89
  90 int main()
  91 {
  92   /*
  93
  94   SetUp<Exercise_2_3<1000>, 2> s1a;
  95   SetUp<Exercise_2_3<2000>, 1> s2;
  96   SetUp<Exercise_2_3<2000>, 2> s2a;
  97   return s1->get_boundary_values().value + s1a.get_boundary_values().value +
  98       s2.get_boundary_values().value + s2a.get_boundary_values().value +
  99       s1->get_right_hand_side().value + s1a.get_right_hand_side().value +
 100       s2.get_right_hand_side().value + s2a.get_right_hand_side().value;
 101   */
 102
 103   SetUp<Exercise_2_3<1000>, 1> * s1 =  new  SetUp<Exercise_2_3<1000>, 1>();
 104
 105   printf("%d\n", s1->get_boundary_values().value);
 106
 107   ifstream * infile = new ifstream("./template-list-iostream.cc");
 108
 109   myread(infile);
 110
 111   ofstream * outfile = new ofstream("/tmp/xxx.txt");
 112
 113   if (outfile->good())
 114     (*outfile) << "hello there" << std::endl;
 115   std::cerr << "Reached End" << std::endl;
 116
 117   delete outfile;
 118
 119   return 0;
 120 }