tests/test-42.cs

   1 //
   2 // This test exercises the various ways in which mutator operators can be
   3 // used in C# and the various different scenarios that the compiler would
   4 // have to deal with
   5 //
   6 // variables, linear arrays, multi-dimensional arrays, jagged arrays,
   7 // properties, indexers and overloaded ++ and --
   8 //
   9
  10 class X {
  11
  12         public int v, p;
  13         public int idx;
  14
  15         public int this [int n] {
  16                 get {
  17                         idx = n;
  18                         return v;
  19                 }
  20                 set {
  21                         idx = n;
  22                         v = value;
  23                 }
  24         }
  25
  26         public int P {
  27                 get {
  28                         return p;
  29                 }
  30
  31                 set {
  32                         p = value;
  33                 }
  34         }
  35
  36 }
  37
  38 class Z {
  39         int v;
  40
  41         public Z P {
  42                 get {
  43                         return null;
  44                 }
  45
  46                 set {
  47                 }
  48         }
  49
  50         static public Z operator ++ (Z v)
  51         {
  52                 v.v++;
  53                 return v;
  54         }
  55 }
  56
  57 class Y {
  58
  59         static int p_pre_increment (X x)
  60         {
  61                 return ++x.P;
  62         }
  63
  64         static int p_post_increment (X x)
  65         {
  66                 return x.P++;
  67         }
  68
  69         static int i_pre_increment (X x)
  70         {
  71                 return ++x [100];
  72         }
  73
  74         static int  i_post_increment (X x)
  75         {
  76                 return x [14]++;
  77         }
  78
  79         static Z overload_increment (Z z)
  80         {
  81                   return z++;
  82         }
  83
  84         static Z overload_pre_increment (Z z)
  85         {
  86                   return ++z;
  87         }
  88
  89         static Z ugly (Z z)
  90         {
  91                   return z.P++;
  92         }
  93
  94         //
  95         // Tests the ++ and -- operators on integers
  96         //
  97         static int simple (int i)
  98         {
  99                 if (++i != 11)
 100                         return 1;
 101                 if (--i != 10)
 102                         return 2;
 103                 if (i++ != 10)
 104                         return 3;
 105                 if (i-- != 11)
 106                         return 4;
 107                 return 0;
 108         }
 109
 110         static int arrays ()
 111         {
 112                 int [] a = new int [10];
 113                 int i, j;
 114
 115                 for (i = 0; i < 10; i++)
 116                         a [i]++;
 117
 118                 for (i = 0; i < 10; i++)
 119                         if (a [i] != 1)
 120                                 return 100;
 121
 122                 int [,] b = new int [10,10];
 123                 for (i = 0; i < 10; i++){
 124                         for (j = 0; j < 10; j++){
 125                                 b [i,j] = i * 10 + j;
 126                                 if (i < 5)
 127                                         b [i,j]++;
 128                                 else
 129                                         ++b [i,j];
 130                         }
 131                 }
 132
 133                 for (i = 0; i < 10; i++){
 134                         for (j = 0; j < 10; j++){
 135                                 if (b [i,j] != i * 10 + (j + 1))
 136                                         return 101;
 137                         }
 138                 }
 139
 140                 return 0;
 141         }
 142
 143         static int Main ()
 144         {
 145                 X x = new X ();
 146                 int c;
 147
 148                 if ((c = simple (10)) != 0)
 149                         return c;
 150
 151                 if (i_pre_increment (x) != 1)
 152                         return 5;
 153
 154                 if (x.idx != 100)
 155                         return 6;
 156
 157                 if (i_post_increment (x) != 1)
 158                         return 7;
 159
 160                 if (x.idx != 14)
 161                         return 8;
 162
 163                 if (p_pre_increment (x) != 1)
 164                         return 9;
 165
 166                 if (x.p != 1)
 167                         return 10;
 168
 169                 if (p_post_increment (x) != 1)
 170                         return 10;
 171
 172                 if (x.p != 2)
 173                         return 11;
 174
 175                 Z z = new Z();
 176
 177                 overload_increment (z);
 178
 179                 arrays ();
 180
 181                 return 0;
 182         }
 183
 184 }