mono/mini/generics.cs

   1 using System;
   2 using System.Collections.Generic;
   3
   4 class Tests {
   5
   6         struct TestStruct {
   7                 public int i;
   8                 public int j;
   9
  10                 public TestStruct (int i, int j) {
  11                         this.i = i;
  12                         this.j = j;
  13                 }
  14         }
  15
  16         class Enumerator <T> : MyIEnumerator <T> {
  17                 T MyIEnumerator<T>.Current {
  18                         get {
  19                                 return default(T);
  20                         }
  21                 }
  22
  23                 bool MyIEnumerator<T>.MoveNext () {
  24                         return true;
  25                 }
  26         }
  27
  28         class Comparer <T> : IComparer <T> {
  29                 bool IComparer<T>.Compare (T x, T y) {
  30                         return true;
  31                 }
  32         }
  33
  34         static int Main ()
  35         {
  36                 return TestDriver.RunTests (typeof (Tests));
  37         }
  38
  39         public static int test_1_nullable_unbox ()
  40         {
  41                 return Unbox<int?> (1).Value;
  42         }
  43
  44         public static int test_1_nullable_unbox_null ()
  45         {
  46                 return Unbox<int?> (null).HasValue ? 0 : 1;
  47         }
  48
  49         public static int test_1_nullable_box ()
  50         {
  51                 return (int) Box<int?> (1);
  52         }
  53
  54         public static int test_1_nullable_box_null ()
  55         {
  56                 return Box<int?> (null) == null ? 1 : 0;
  57         }
  58
  59         public static int test_1_isinst_nullable ()
  60         {
  61                 object o = 1;
  62                 return (o is int?) ? 1 : 0;
  63         }
  64
  65         public static int test_1_nullable_unbox_vtype ()
  66         {
  67                 return Unbox<TestStruct?> (new TestStruct (1, 2)).Value.i;
  68         }
  69
  70         public static int test_1_nullable_unbox_null_vtype ()
  71         {
  72                 return Unbox<TestStruct?> (null).HasValue ? 0 : 1;
  73         }
  74
  75         public static int test_1_nullable_box_vtype ()
  76         {
  77                 return ((TestStruct)(Box<TestStruct?> (new TestStruct (1, 2)))).i;
  78         }
  79
  80         public static int test_1_nullable_box_null_vtype ()
  81         {
  82                 return Box<TestStruct?> (null) == null ? 1 : 0;
  83         }
  84
  85         public static int test_1_isinst_nullable_vtype ()
  86         {
  87                 object o = new TestStruct (1, 2);
  88                 return (o is TestStruct?) ? 1 : 0;
  89         }
  90
  91         public static int test_0_nullable_normal_unbox ()
  92         {
  93                 int? i = 5;
  94
  95                 object o = i;
  96                 // This uses unbox instead of unbox_any
  97                 int? j = (int?)o;
  98
  99                 if (j != 5)
 100                         return 1;
 101
 102                 return 0;
 103         }
 104
 105         public static void stelem_any<T> (T[] arr, T elem) {
 106                 arr [0] = elem;
 107         }
 108
 109         public static T ldelem_any<T> (T[] arr) {
 110                 return arr [0];
 111         }
 112
 113         public static int test_1_ldelem_stelem_any_int () {
 114                 int[] arr = new int [3];
 115                 stelem_any (arr, 1);
 116
 117                 return ldelem_any (arr);
 118         }
 119
 120         public static T return_ref<T> (ref T t) {
 121                 return t;
 122         }
 123
 124         public static T ldelema_any<T> (T[] arr) {
 125                 return return_ref<T> (ref arr [0]);
 126         }
 127
 128         public static int test_0_ldelema () {
 129                 string[] arr = new string [1];
 130
 131                 arr [0] = "Hello";
 132
 133                 if (ldelema_any <string> (arr) == "Hello")
 134                         return 0;
 135                 else
 136                         return 1;
 137         }
 138
 139         public static T[,] newarr_multi<T> () {
 140                 return new T [1, 1];
 141         }
 142
 143         public static int test_0_newarr_multi_dim () {
 144                 return newarr_multi<string> ().GetType () == typeof (string[,]) ? 0 : 1;
 145         }
 146
 147         interface ITest
 148         {
 149                 void Foo<T> ();
 150         }
 151
 152         public static int test_0_iface_call_null_bug_77442 () {
 153                 ITest test = null;
 154
 155                 try {
 156                         test.Foo<int> ();
 157                 }
 158                 catch (NullReferenceException) {
 159                         return 0;
 160                 }
 161
 162                 return 1;
 163         }
 164
 165         public static int test_18_ldobj_stobj_generics () {
 166                 GenericClass<int> t = new GenericClass <int> ();
 167                 int i = 5;
 168                 int j = 6;
 169                 return t.ldobj_stobj (ref i, ref j) + i + j;
 170         }
 171
 172         public static int test_5_ldelem_stelem_generics () {
 173                 GenericClass<TestStruct> t = new GenericClass<TestStruct> ();
 174
 175                 TestStruct s = new TestStruct (5, 5);
 176                 return t.ldelem_stelem (s).i;
 177         }
 178
 179         public static int test_0_constrained_vtype_box () {
 180                 GenericClass<TestStruct> t = new GenericClass<TestStruct> ();
 181
 182                 return t.toString (new TestStruct ()) == "Tests+TestStruct" ? 0 : 1;
 183         }
 184
 185         public static int test_0_constrained_vtype () {
 186                 GenericClass<int> t = new GenericClass<int> ();
 187
 188                 return t.toString (1234) == "1234" ? 0 : 1;
 189         }
 190
 191         public static int test_0_constrained_reftype () {
 192                 GenericClass<String> t = new GenericClass<String> ();
 193
 194                 return t.toString ("1234") == "1234" ? 0 : 1;
 195         }
 196
 197         public static int test_0_box_brtrue_optimizations () {
 198                 if (IsNull<int>(5))
 199                         return 1;
 200
 201                 if (!IsNull<object>(null))
 202                         return 1;
 203
 204                 return 0;
 205         }
 206
 207         public static int test_0_generic_get_value_optimization_int () {
 208                 int[] x = new int[] {100, 200};
 209
 210                 if (GenericClass<int>.Z (x, 0) != 100)
 211                         return 2;
 212
 213                 if (GenericClass<int>.Z (x, 1) != 200)
 214                         return 3;
 215
 216                 return 0;
 217         }
 218
 219         public static int test_0_generic_get_value_optimization_vtype () {
 220                 TestStruct[] arr = new TestStruct[] { new TestStruct (100, 200), new TestStruct (300, 400) };
 221                 IEnumerator<TestStruct> enumerator = GenericClass<TestStruct>.Y (arr);
 222                 TestStruct s;
 223                 int sum = 0;
 224                 while (enumerator.MoveNext ()) {
 225                         s = enumerator.Current;
 226                         sum += s.i + s.j;
 227                 }
 228
 229                 if (sum != 1000)
 230                         return 1;
 231
 232                 s = GenericClass<TestStruct>.Z (arr, 0);
 233                 if (s.i != 100 || s.j != 200)
 234                         return 2;
 235
 236                 s = GenericClass<TestStruct>.Z (arr, 1);
 237                 if (s.i != 300 || s.j != 400)
 238                         return 3;
 239
 240                 return 0;
 241         }
 242
 243         public static int test_0_nullable_ldflda () {
 244                 return GenericClass<string>.BIsAClazz == false ? 0 : 1;
 245         }
 246
 247         public struct GenericStruct<T> {
 248                 public T t;
 249
 250                 public GenericStruct (T t) {
 251                         this.t = t;
 252                 }
 253         }
 254
 255         public class GenericClass<T> {
 256                 public T t;
 257
 258                 public GenericClass (T t) {
 259                         this.t = t;
 260                 }
 261
 262                 public GenericClass () {
 263                 }
 264
 265                 public T ldobj_stobj (ref T t1, ref T t2) {
 266                         t1 = t2;
 267                         T t = t1;
 268
 269                         return t;
 270                 }
 271
 272                 public T ldelem_stelem (T t) {
 273                         T[] arr = new T [10];
 274                         arr [0] = t;
 275
 276                         return arr [0];
 277                 }
 278
 279                 public String toString (T t) {
 280                         return t.ToString ();
 281                 }
 282
 283                 public static IEnumerator<T> Y (IEnumerable <T> x)
 284                 {
 285                         return x.GetEnumerator ();
 286                 }
 287
 288                 public static T Z (IList<T> x, int index)
 289                 {
 290                         return x [index];
 291                 }
 292
 293         protected static T NullB = default(T);
 294         private static Nullable<bool>  _BIsA = null;
 295         public static bool BIsAClazz {
 296             get {
 297                 _BIsA = false;
 298                 return _BIsA.Value;
 299             }
 300         }
 301         }
 302
 303         public class MRO : MarshalByRefObject {
 304                 public GenericStruct<int> struct_field;
 305                 public GenericClass<int> class_field;
 306         }
 307
 308         public static int test_0_ldfld_stfld_mro () {
 309                 MRO m = new MRO ();
 310                 GenericStruct<int> s = new GenericStruct<int> (5);
 311                 // This generates stfld
 312                 m.struct_field = s;
 313
 314                 // This generates ldflda
 315                 if (m.struct_field.t != 5)
 316                         return 1;
 317
 318                 // This generates ldfld
 319                 GenericStruct<int> s2 = m.struct_field;
 320                 if (s2.t != 5)
 321                         return 2;
 322
 323                 if (m.struct_field.t != 5)
 324                         return 3;
 325
 326                 m.class_field = new GenericClass<int> (5);
 327                 if (m.class_field.t != 5)
 328                         return 4;
 329
 330                 return 0;
 331         }
 332
 333     public static int test_0_generic_virtual_call_on_vtype_unbox () {
 334                 object o = new Object ();
 335         IFoo h = new Handler(o);
 336
 337         if (h.Bar<object> () != o)
 338                         return 1;
 339                 else
 340                         return 0;
 341     }
 342
 343         public static int test_0_box_brtrue_opt () {
 344                 Foo<int> f = new Foo<int> (5);
 345
 346                 f [123] = 5;
 347
 348                 return 0;
 349         }
 350
 351         public static int test_0_box_brtrue_opt_regress_81102 () {
 352                 if (new Foo<int>(5).ToString () == "null")
 353                         return 0;
 354                 else
 355                         return 1;
 356         }
 357
 358         struct S {
 359                 public int i;
 360         }
 361
 362         public static int test_0_ldloca_initobj_opt () {
 363                 if (new Foo<S> (new S ()).get_default ().i != 0)
 364                         return 1;
 365                 if (new Foo<object> (null).get_default () != null)
 366                         return 2;
 367                 return 0;
 368         }
 369
 370         public static int test_0_variance_reflection () {
 371                 // covariance on IEnumerator
 372                 if (!typeof (MyIEnumerator<object>).IsAssignableFrom (typeof (MyIEnumerator<string>)))
 373                         return 1;
 374                 // covariance on IEnumerator and covariance on arrays
 375                 if (!typeof (MyIEnumerator<object>[]).IsAssignableFrom (typeof (MyIEnumerator<string>[])))
 376                         return 2;
 377                 // covariance and implemented interfaces
 378                 if (!typeof (MyIEnumerator<object>).IsAssignableFrom (typeof (Enumerator<string>)))
 379                         return 3;
 380
 381                 // contravariance on IComparer
 382                 if (!typeof (IComparer<string>).IsAssignableFrom (typeof (IComparer<object>)))
 383                         return 4;
 384                 // contravariance on IComparer, contravariance on arrays
 385                 if (!typeof (IComparer<string>[]).IsAssignableFrom (typeof (IComparer<object>[])))
 386                         return 5;
 387                 // contravariance and interface inheritance
 388                 if (!typeof (IComparer<string>[]).IsAssignableFrom (typeof (IKeyComparer<object>[])))
 389                         return 6;
 390                 return 0;
 391         }
 392
 393         public static int test_0_ldvirtftn_generic_method () {
 394                 new Tests ().ldvirtftn<string> ();
 395
 396                 return the_type == typeof (string) ? 0 : 1;
 397         }
 398
 399         public static int test_0_throw_dead_this () {
 400         new Foo<string> ("").throw_dead_this ();
 401                 return 0;
 402         }
 403
 404         public static int test_0_generic_virtual_on_interfaces () {
 405                 Foo<string>.count1 = 0;
 406                 Foo<string>.count2 = 0;
 407                 Foo<string>.count3 = 0;
 408
 409                 IFoo f = new Foo<string> ("");
 410                 for (int i = 0; i < 1000; ++i) {
 411                         f.Bar <int> ();
 412                         f.Bar <string> ();
 413                         f.NonGeneric ();
 414                 }
 415
 416                 if (Foo<string>.count1 != 1000)
 417                         return 1;
 418                 if (Foo<string>.count2 != 1000)
 419                         return 2;
 420                 if (Foo<string>.count3 != 1000)
 421                         return 3;
 422
 423                 VirtualInterfaceCallFromGenericMethod<long> (f);
 424
 425                 return 0;
 426         }
 427
 428         public static void VirtualInterfaceCallFromGenericMethod <T> (IFoo f) {
 429                 f.Bar <T> ();
 430         }
 431
 432         public static Type the_type;
 433
 434         public void ldvirtftn<T> () {
 435                 Foo <T> binding = new Foo <T> (default (T));
 436
 437                 binding.GenericEvent += event_handler;
 438                 binding.fire ();
 439         }
 440
 441         public virtual void event_handler<T> (Foo<T> sender) {
 442                 the_type = typeof (T);
 443         }
 444
 445         public interface IFoo {
 446                 void NonGeneric ();
 447                 object Bar<T>();
 448         }
 449
 450         public class Foo<T1> : IFoo
 451         {
 452                 public Foo(T1 t1)
 453                 {
 454                         m_t1 = t1;
 455                 }
 456
 457                 public override string ToString()
 458                 {
 459                         return Bar(m_t1 == null ? "null" : "null");
 460                 }
 461
 462                 public String Bar (String s) {
 463                         return s;
 464                 }
 465
 466                 public int this [T1 key] {
 467                         set {
 468                                 if (key == null)
 469                                         throw new ArgumentNullException ("key");
 470                         }
 471                 }
 472
 473                 public void throw_dead_this () {
 474                         try {
 475                                 new SomeClass().ThrowAnException();
 476                         }
 477                         catch {
 478                         }
 479                 }
 480
 481                 public T1 get_default () {
 482                         return default (T1);
 483                 }
 484
 485                 readonly T1 m_t1;
 486
 487                 public delegate void GenericEventHandler (Foo<T1> sender);
 488
 489                 public event GenericEventHandler GenericEvent;
 490
 491                 public void fire () {
 492                         GenericEvent (this);
 493                 }
 494
 495                 public static int count1, count2, count3;
 496
 497                 public void NonGeneric () {
 498                         count3 ++;
 499                 }
 500
 501                 public object Bar <T> () {
 502                         if (typeof (T) == typeof (int))
 503                                 count1 ++;
 504                         else if (typeof (T) == typeof (string))
 505                                 count2 ++;
 506                         return null;
 507                 }
 508         }
 509
 510         public class SomeClass {
 511                 public void ThrowAnException() {
 512                         throw new Exception ("Something went wrong");
 513                 }
 514         }
 515
 516         struct Handler : IFoo {
 517                 object o;
 518
 519                 public Handler(object o) {
 520                         this.o = o;
 521                 }
 522
 523                 public void NonGeneric () {
 524                 }
 525
 526                 public object Bar<T>() {
 527                         return o;
 528                 }
 529         }
 530
 531         static bool IsNull<T> (T t)
 532         {
 533                 if (t == null)
 534                         return true;
 535                 else
 536                         return false;
 537         }
 538
 539         static object Box<T> (T t)
 540         {
 541                 return t;
 542         }
 543
 544         static T Unbox <T> (object o) {
 545                 return (T) o;
 546         }
 547 }