Mercurial > projects > ldc
annotate lphobos/internal/objectimpl.d @ 113:27b9f749d9fe trunk
[svn r117] Initial working implementation of interfaces.
Groundwork for all the different types of class/interface casts laid out.
| author | lindquist |
|---|---|
| date | Sat, 24 Nov 2007 06:33:00 +0100 |
| parents | 5b5194b25f33 |
| children | fd7ad91fd713 |
| rev | line source |
|---|---|
| 1 | 1 |
| 2 /** | |
| 3 * Part of the D programming language runtime library. | |
| 4 * Forms the symbols available to all D programs. Includes | |
| 5 * Object, which is the root of the class object hierarchy. | |
| 6 * | |
| 7 * This module is implicitly imported. | |
| 8 * Macros: | |
| 9 * WIKI = Phobos/Object | |
| 10 */ | |
| 11 | |
| 12 /* | |
| 13 * Copyright (C) 2004-2007 by Digital Mars, www.digitalmars.com | |
| 14 * Written by Walter Bright | |
| 15 * | |
| 16 * This software is provided 'as-is', without any express or implied | |
| 17 * warranty. In no event will the authors be held liable for any damages | |
| 18 * arising from the use of this software. | |
| 19 * | |
| 20 * Permission is granted to anyone to use this software for any purpose, | |
| 21 * including commercial applications, and to alter it and redistribute it | |
| 22 * freely, in both source and binary form, subject to the following | |
| 23 * restrictions: | |
| 24 * | |
| 25 * o The origin of this software must not be misrepresented; you must not | |
| 26 * claim that you wrote the original software. If you use this software | |
| 27 * in a product, an acknowledgment in the product documentation would be | |
| 28 * appreciated but is not required. | |
| 29 * o Altered source versions must be plainly marked as such, and must not | |
| 30 * be misrepresented as being the original software. | |
| 31 * o This notice may not be removed or altered from any source | |
| 32 * distribution. | |
| 33 */ | |
| 34 | |
| 89 | 35 /* |
| 36 * This copy is modified to work with LLVMDC by Tomas Lindquist Olsen 2007 | |
| 37 */ | |
| 1 | 38 |
| 39 module object; | |
| 40 | |
| 89 | 41 import std.outofmemory; |
| 1 | 42 |
| 52 | 43 /** |
| 44 * An unsigned integral type large enough to span the memory space. Use for | |
| 45 * array indices and pointer offsets for maximal portability to | |
| 46 * architectures that have different memory address ranges. This is | |
| 47 * analogous to C's size_t. | |
| 48 */ | |
| 49 alias typeof(int.sizeof) size_t; | |
| 50 | |
| 51 /** | |
| 52 * A signed integral type large enough to span the memory space. Use for | |
| 53 * pointer differences and for size_t differences for maximal portability to | |
| 54 * architectures that have different memory address ranges. This is | |
| 55 * analogous to C's ptrdiff_t. | |
| 56 */ | |
| 57 alias typeof(cast(void*)0 - cast(void*)0) ptrdiff_t; | |
| 58 | |
| 59 alias size_t hash_t; | |
| 60 | |
| 1 | 61 extern (C) |
| 62 { /// C's printf function. | |
| 63 int printf(char *, ...); | |
| 52 | 64 void trace_term(); |
| 1 | 65 |
| 66 int memcmp(void *, void *, size_t); | |
| 67 void* memcpy(void *, void *, size_t); | |
| 68 void* calloc(size_t, size_t); | |
| 69 void* realloc(void*, size_t); | |
| 70 void free(void*); | |
| 71 | |
| 72 //Object _d_newclass(ClassInfo ci); | |
| 73 } | |
| 74 | |
| 75 /// Standard boolean type. | |
| 76 alias bool bit; | |
| 77 | |
| 52 | 78 alias char[] string; |
| 79 alias wchar[] wstring; | |
| 80 alias dchar[] dstring; | |
| 1 | 81 |
| 82 /+ | |
| 52 | 83 |
| 1 | 84 /* ************************* |
| 85 * Internal struct pointed to by the hidden .monitor member. | |
| 86 */ | |
| 87 struct Monitor | |
| 88 { | |
| 89 void delegate(Object)[] delegates; | |
| 90 | |
| 91 /* More stuff goes here defined by internal/monitor.c */ | |
| 92 } | |
| 52 | 93 |
| 1 | 94 +/ |
| 95 | |
| 96 /****************** | |
| 97 * All D class objects inherit from Object. | |
| 98 */ | |
| 99 class Object | |
| 100 { | |
| 101 void print() | |
| 102 { | |
| 103 char[] s = toString(); | |
| 104 printf("%.*s\n", s.length, s.ptr); | |
| 105 } | |
| 106 | |
| 107 /** | |
| 108 * Convert Object to a human readable string. | |
| 109 */ | |
| 110 char[] toString() | |
| 111 { | |
| 112 //return this.classinfo.name; | |
| 52 | 113 return "object.Object (no classinfo yet)"; |
| 1 | 114 } |
| 115 | |
| 116 /** | |
| 117 * Compute hash function for Object. | |
| 118 */ | |
| 119 hash_t toHash() | |
| 120 { | |
| 121 // BUG: this prevents a compacting GC from working, needs to be fixed | |
| 52 | 122 return cast(hash_t)cast(void *)this; |
| 1 | 123 } |
| 124 | |
| 125 /** | |
| 126 * Compare with another Object obj. | |
| 127 * Returns: | |
| 128 * $(TABLE | |
| 129 * $(TR $(TD this < obj) $(TD < 0)) | |
| 130 * $(TR $(TD this == obj) $(TD 0)) | |
| 131 * $(TR $(TD this > obj) $(TD > 0)) | |
| 132 * ) | |
| 133 */ | |
| 134 int opCmp(Object o) | |
| 135 { | |
| 136 // BUG: this prevents a compacting GC from working, needs to be fixed | |
| 137 //return cast(int)cast(void *)this - cast(int)cast(void *)o; | |
| 138 | |
| 139 //throw new Error("need opCmp for class " ~ this.classinfo.name); | |
| 52 | 140 throw new Error("need opCmp for class unknown object.Object (no classinfo yet)"); |
| 1 | 141 } |
| 142 | |
| 143 /** | |
| 144 * Returns !=0 if this object does have the same contents as obj. | |
| 145 */ | |
| 146 int opEquals(Object o) | |
| 147 { | |
| 148 return cast(int)(this is o); | |
| 149 } | |
| 150 | |
| 151 /* ** | |
| 152 * Call delegate dg, passing this to it, when this object gets destroyed. | |
| 153 * Use extreme caution, as the list of delegates is stored in a place | |
| 154 * not known to the gc. Thus, if any objects pointed to by one of these | |
| 155 * delegates gets freed by the gc, calling the delegate will cause a | |
| 156 * crash. | |
| 157 * This is only for use by library developers, as it will need to be | |
| 158 * redone if weak pointers are added or a moving gc is developed. | |
| 159 */ | |
| 160 final void notifyRegister(void delegate(Object) dg) | |
| 161 { | |
| 52 | 162 /+ |
| 1 | 163 //printf("notifyRegister(dg = %llx, o = %p)\n", dg, this); |
| 52 | 164 synchronized (this) |
| 1 | 165 { |
| 166 Monitor* m = cast(Monitor*)(cast(void**)this)[1]; | |
| 167 foreach (inout x; m.delegates) | |
| 168 { | |
| 169 if (!x || x == dg) | |
| 170 { x = dg; | |
| 171 return; | |
| 172 } | |
| 173 } | |
| 174 | |
| 175 // Increase size of delegates[] | |
| 176 auto len = m.delegates.length; | |
| 177 auto startlen = len; | |
| 178 if (len == 0) | |
| 179 { | |
| 180 len = 4; | |
| 181 auto p = calloc((void delegate(Object)).sizeof, len); | |
| 182 if (!p) | |
| 183 _d_OutOfMemory(); | |
| 184 m.delegates = (cast(void delegate(Object)*)p)[0 .. len]; | |
| 185 } | |
| 186 else | |
| 187 { | |
| 188 len += len + 4; | |
| 189 auto p = realloc(m.delegates.ptr, (void delegate(Object)).sizeof * len); | |
| 190 if (!p) | |
| 191 _d_OutOfMemory(); | |
| 192 m.delegates = (cast(void delegate(Object)*)p)[0 .. len]; | |
| 193 m.delegates[startlen .. len] = null; | |
| 194 } | |
| 195 m.delegates[startlen] = dg; | |
| 52 | 196 } |
| 197 +/ | |
| 1 | 198 } |
| 199 | |
| 200 /* ** | |
| 201 * Remove delegate dg from the notify list. | |
| 202 * This is only for use by library developers, as it will need to be | |
| 203 * redone if weak pointers are added or a moving gc is developed. | |
| 204 */ | |
| 205 final void notifyUnRegister(void delegate(Object) dg) | |
| 206 { | |
| 52 | 207 /+ |
| 208 synchronized (this) | |
| 1 | 209 { |
| 210 Monitor* m = cast(Monitor*)(cast(void**)this)[1]; | |
| 211 foreach (inout x; m.delegates) | |
| 212 { | |
| 213 if (x == dg) | |
| 214 x = null; | |
| 215 } | |
| 52 | 216 } |
| 217 +/ | |
| 1 | 218 } |
| 219 | |
| 220 /****** | |
| 221 * Create instance of class specified by classname. | |
| 222 * The class must either have no constructors or have | |
| 223 * a default constructor. | |
| 224 * Returns: | |
| 225 * null if failed | |
| 226 */ | |
| 52 | 227 static Object factory(char[] classname) |
| 1 | 228 { |
| 52 | 229 /+ |
| 42 | 230 auto ci = ClassInfo.find(classname); |
| 1 | 231 if (ci) |
| 232 { | |
| 233 return ci.create(); | |
| 42 | 234 } |
| 52 | 235 +/ |
| 1 | 236 return null; |
| 52 | 237 } |
| 1 | 238 } |
| 239 | |
| 240 /+ | |
| 241 extern (C) void _d_notify_release(Object o) | |
| 242 { | |
| 243 //printf("_d_notify_release(o = %p)\n", o); | |
| 244 Monitor* m = cast(Monitor*)(cast(void**)o)[1]; | |
| 245 if (m.delegates.length) | |
| 246 { | |
| 247 auto dgs = m.delegates; | |
| 248 synchronized (o) | |
| 249 { | |
| 250 dgs = m.delegates; | |
| 251 m.delegates = null; | |
| 252 } | |
| 253 | |
| 254 foreach (dg; dgs) | |
| 255 { | |
| 256 if (dg) | |
| 257 { //printf("calling dg = %llx (%p)\n", dg, o); | |
| 258 dg(o); | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 free(dgs.ptr); | |
| 263 } | |
| 264 } | |
| 265 | |
| 89 | 266 +/ |
| 267 | |
| 1 | 268 /** |
| 269 * Information about an interface. | |
| 270 * A pointer to this appears as the first entry in the interface's vtbl[]. | |
| 271 */ | |
| 272 struct Interface | |
| 273 { | |
| 274 ClassInfo classinfo; /// .classinfo for this interface (not for containing class) | |
| 275 void *[] vtbl; | |
| 276 int offset; /// offset to Interface 'this' from Object 'this' | |
| 277 } | |
| 278 | |
| 279 import std.moduleinit; | |
| 89 | 280 |
| 1 | 281 /** |
| 282 * Runtime type information about a class. Can be retrieved for any class type | |
| 283 * or instance by using the .classinfo property. | |
| 284 * A pointer to this appears as the first entry in the class's vtbl[]. | |
| 285 */ | |
| 286 class ClassInfo : Object | |
| 287 { | |
| 288 byte[] init; /** class static initializer | |
| 289 * (init.length gives size in bytes of class) | |
| 290 */ | |
| 291 char[] name; /// class name | |
| 292 void *[] vtbl; /// virtual function pointer table | |
| 293 Interface[] interfaces; /// interfaces this class implements | |
| 294 ClassInfo base; /// base class | |
| 295 void *destructor; | |
| 89 | 296 void function(Object) classInvariant; |
| 1 | 297 uint flags; |
| 298 // 1: // IUnknown | |
| 299 // 2: // has no possible pointers into GC memory | |
| 300 // 4: // has offTi[] member | |
| 301 // 8: // has constructors | |
| 302 void *deallocator; | |
| 303 OffsetTypeInfo[] offTi; | |
| 304 void function(Object) defaultConstructor; // default Constructor | |
| 305 | |
| 306 /************* | |
| 307 * Search all modules for ClassInfo corresponding to classname. | |
| 308 * Returns: null if not found | |
| 309 */ | |
| 310 static ClassInfo find(char[] classname) | |
| 311 { | |
| 89 | 312 /+foreach (m; ModuleInfo.modules()) |
| 1 | 313 { |
| 314 //writefln("module %s, %d", m.name, m.localClasses.length); | |
| 315 foreach (c; m.localClasses) | |
| 316 { | |
| 317 //writefln("\tclass %s", c.name); | |
| 318 if (c.name == classname) | |
| 319 return c; | |
| 320 } | |
| 89 | 321 }+/ |
| 1 | 322 return null; |
| 323 } | |
| 324 | |
| 325 /******************** | |
| 326 * Create instance of Object represented by 'this'. | |
| 327 */ | |
| 328 Object create() | |
| 329 { | |
| 89 | 330 /+if (flags & 8 && !defaultConstructor) |
| 1 | 331 return null; |
| 332 Object o = _d_newclass(this); | |
| 333 if (flags & 8 && defaultConstructor) | |
| 334 { | |
| 335 defaultConstructor(o); | |
| 336 } | |
| 337 return o; | |
| 89 | 338 +/ |
| 339 return null; | |
| 1 | 340 } |
| 341 } | |
| 342 | |
| 89 | 343 //private import std.string; |
| 1 | 344 |
| 52 | 345 |
| 1 | 346 /** |
| 347 * Array of pairs giving the offset and type information for each | |
| 348 * member in an aggregate. | |
| 349 */ | |
| 350 struct OffsetTypeInfo | |
| 351 { | |
| 352 size_t offset; /// Offset of member from start of object | |
| 353 TypeInfo ti; /// TypeInfo for this member | |
| 354 } | |
| 355 | |
| 52 | 356 private int string_cmp(char[] s1, char[] s2) |
| 357 { | |
| 358 auto len = s1.length; | |
| 359 if (s2.length < len) | |
| 360 len = s2.length; | |
| 361 int result = memcmp(s1.ptr, s2.ptr, len); | |
| 362 if (result == 0) | |
| 363 result = cast(int)(cast(ptrdiff_t)s1.length - cast(ptrdiff_t)s2.length); | |
| 364 return result; | |
| 365 } | |
| 366 | |
| 1 | 367 /** |
| 368 * Runtime type information about a type. | |
| 369 * Can be retrieved for any type using a | |
| 370 * <a href="../expression.html#typeidexpression">TypeidExpression</a>. | |
| 371 */ | |
| 372 class TypeInfo | |
| 373 { | |
| 374 hash_t toHash() | |
| 375 { hash_t hash; | |
| 376 | |
| 377 foreach (char c; this.toString()) | |
| 378 hash = hash * 9 + c; | |
| 379 return hash; | |
| 380 } | |
| 381 | |
| 382 int opCmp(Object o) | |
| 383 { | |
| 384 if (this is o) | |
| 385 return 0; | |
| 386 TypeInfo ti = cast(TypeInfo)o; | |
| 387 if (ti is null) | |
| 388 return 1; | |
| 52 | 389 return string_cmp(this.toString(), ti.toString()); |
| 1 | 390 } |
| 391 | |
| 392 int opEquals(Object o) | |
| 393 { | |
| 394 /* TypeInfo instances are singletons, but duplicates can exist | |
| 395 * across DLL's. Therefore, comparing for a name match is | |
| 396 * sufficient. | |
| 397 */ | |
| 398 if (this is o) | |
| 399 return 1; | |
| 400 TypeInfo ti = cast(TypeInfo)o; | |
| 401 return cast(int)(ti && this.toString() == ti.toString()); | |
| 402 } | |
| 403 | |
| 404 /// Returns a hash of the instance of a type. | |
| 405 hash_t getHash(void *p) { return cast(uint)p; } | |
| 406 | |
| 407 /// Compares two instances for equality. | |
| 408 int equals(void *p1, void *p2) { return cast(int)(p1 == p2); } | |
| 409 | |
| 410 /// Compares two instances for <, ==, or >. | |
| 411 int compare(void *p1, void *p2) { return 0; } | |
| 412 | |
| 413 /// Returns size of the type. | |
| 414 size_t tsize() { return 0; } | |
| 415 | |
| 416 /// Swaps two instances of the type. | |
| 417 void swap(void *p1, void *p2) | |
| 418 { | |
| 419 size_t n = tsize(); | |
| 420 for (size_t i = 0; i < n; i++) | |
| 421 { byte t; | |
| 422 | |
| 423 t = (cast(byte *)p1)[i]; | |
| 424 (cast(byte *)p1)[i] = (cast(byte *)p2)[i]; | |
| 425 (cast(byte *)p2)[i] = t; | |
| 426 } | |
| 427 } | |
| 428 | |
| 429 /// Get TypeInfo for 'next' type, as defined by what kind of type this is, | |
| 430 /// null if none. | |
| 431 TypeInfo next() { return null; } | |
| 432 | |
| 433 /// Return default initializer, null if default initialize to 0 | |
| 434 void[] init() { return null; } | |
| 435 | |
| 436 /// Get flags for type: 1 means GC should scan for pointers | |
| 437 uint flags() { return 0; } | |
| 438 | |
| 439 /// Get type information on the contents of the type; null if not available | |
| 440 OffsetTypeInfo[] offTi() { return null; } | |
| 441 } | |
| 442 | |
| 443 class TypeInfo_Typedef : TypeInfo | |
| 444 { | |
| 445 char[] toString() { return name; } | |
| 446 | |
| 447 int opEquals(Object o) | |
| 448 { TypeInfo_Typedef c; | |
| 449 | |
| 450 return cast(int) | |
| 451 (this is o || | |
| 452 ((c = cast(TypeInfo_Typedef)o) !is null && | |
| 453 this.name == c.name && | |
| 454 this.base == c.base)); | |
| 455 } | |
| 456 | |
| 457 hash_t getHash(void *p) { return base.getHash(p); } | |
| 458 int equals(void *p1, void *p2) { return base.equals(p1, p2); } | |
| 459 int compare(void *p1, void *p2) { return base.compare(p1, p2); } | |
| 460 size_t tsize() { return base.tsize(); } | |
| 461 void swap(void *p1, void *p2) { return base.swap(p1, p2); } | |
| 462 | |
|
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463 TypeInfo next() { return base; } |
| 1 | 464 uint flags() { return base.flags(); } |
| 465 void[] init() { return m_init.length ? m_init : base.init(); } | |
| 466 | |
| 467 TypeInfo base; | |
| 468 char[] name; | |
| 469 void[] m_init; | |
| 470 } | |
| 471 | |
| 472 class TypeInfo_Enum : TypeInfo_Typedef | |
| 473 { | |
| 474 } | |
| 475 | |
| 476 class TypeInfo_Pointer : TypeInfo | |
| 477 { | |
| 478 char[] toString() { return m_next.toString() ~ "*"; } | |
| 479 | |
| 480 int opEquals(Object o) | |
| 481 { TypeInfo_Pointer c; | |
| 482 | |
| 483 return this is o || | |
| 484 ((c = cast(TypeInfo_Pointer)o) !is null && | |
| 485 this.m_next == c.m_next); | |
| 486 } | |
| 487 | |
| 488 hash_t getHash(void *p) | |
| 489 { | |
| 490 return cast(uint)*cast(void* *)p; | |
| 491 } | |
| 492 | |
| 493 int equals(void *p1, void *p2) | |
| 494 { | |
| 495 return cast(int)(*cast(void* *)p1 == *cast(void* *)p2); | |
| 496 } | |
| 497 | |
| 498 int compare(void *p1, void *p2) | |
| 499 { | |
| 500 if (*cast(void* *)p1 < *cast(void* *)p2) | |
| 501 return -1; | |
| 502 else if (*cast(void* *)p1 > *cast(void* *)p2) | |
| 503 return 1; | |
| 504 else | |
| 505 return 0; | |
| 506 } | |
| 507 | |
| 508 size_t tsize() | |
| 509 { | |
| 510 return (void*).sizeof; | |
| 511 } | |
| 512 | |
| 513 void swap(void *p1, void *p2) | |
| 514 { void* tmp; | |
| 515 tmp = *cast(void**)p1; | |
| 516 *cast(void**)p1 = *cast(void**)p2; | |
| 517 *cast(void**)p2 = tmp; | |
| 518 } | |
| 519 | |
| 520 TypeInfo next() { return m_next; } | |
| 521 uint flags() { return 1; } | |
| 522 | |
| 523 TypeInfo m_next; | |
| 524 } | |
| 525 | |
| 526 class TypeInfo_Array : TypeInfo | |
| 527 { | |
| 528 char[] toString() { return value.toString() ~ "[]"; } | |
| 529 | |
| 530 int opEquals(Object o) | |
| 531 { TypeInfo_Array c; | |
| 532 | |
| 533 return cast(int) | |
| 534 (this is o || | |
| 535 ((c = cast(TypeInfo_Array)o) !is null && | |
| 536 this.value == c.value)); | |
| 537 } | |
| 538 | |
| 539 hash_t getHash(void *p) | |
| 540 { size_t sz = value.tsize(); | |
| 541 hash_t hash = 0; | |
| 542 void[] a = *cast(void[]*)p; | |
| 543 for (size_t i = 0; i < a.length; i++) | |
| 544 hash += value.getHash(a.ptr + i * sz); | |
| 545 return hash; | |
| 546 } | |
| 547 | |
| 548 int equals(void *p1, void *p2) | |
| 549 { | |
| 550 void[] a1 = *cast(void[]*)p1; | |
| 551 void[] a2 = *cast(void[]*)p2; | |
| 552 if (a1.length != a2.length) | |
| 553 return 0; | |
| 554 size_t sz = value.tsize(); | |
| 555 for (size_t i = 0; i < a1.length; i++) | |
| 556 { | |
| 557 if (!value.equals(a1.ptr + i * sz, a2.ptr + i * sz)) | |
| 558 return 0; | |
| 559 } | |
| 560 return 1; | |
| 561 } | |
| 562 | |
| 563 int compare(void *p1, void *p2) | |
| 564 { | |
| 565 void[] a1 = *cast(void[]*)p1; | |
| 566 void[] a2 = *cast(void[]*)p2; | |
| 567 size_t sz = value.tsize(); | |
| 568 size_t len = a1.length; | |
| 569 | |
| 570 if (a2.length < len) | |
| 571 len = a2.length; | |
| 572 for (size_t u = 0; u < len; u++) | |
| 573 { | |
| 574 int result = value.compare(a1.ptr + u * sz, a2.ptr + u * sz); | |
| 575 if (result) | |
| 576 return result; | |
| 577 } | |
| 578 return cast(int)a1.length - cast(int)a2.length; | |
| 579 } | |
| 580 | |
| 581 size_t tsize() | |
| 582 { | |
| 583 return (void[]).sizeof; | |
| 584 } | |
| 585 | |
| 586 void swap(void *p1, void *p2) | |
| 587 { void[] tmp; | |
| 588 tmp = *cast(void[]*)p1; | |
| 589 *cast(void[]*)p1 = *cast(void[]*)p2; | |
| 590 *cast(void[]*)p2 = tmp; | |
| 591 } | |
| 592 | |
| 593 TypeInfo value; | |
| 594 | |
| 595 TypeInfo next() | |
| 596 { | |
| 597 return value; | |
| 598 } | |
| 599 | |
| 600 uint flags() { return 1; } | |
| 601 } | |
| 602 | |
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603 private const char[10] digits = "0123456789"; /// 0..9 |
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604 |
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605 private char[] lengthToString(uint u) |
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606 { char[uint.sizeof * 3] buffer = void; |
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607 int ndigits; |
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608 char[] result; |
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609 |
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610 ndigits = 0; |
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611 if (u < 10) |
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612 // Avoid storage allocation for simple stuff |
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613 result = digits[u .. u + 1]; |
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614 else |
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615 { |
|
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616 while (u) |
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617 { |
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618 uint c = (u % 10) + '0'; |
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619 u /= 10; |
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620 ndigits++; |
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621 buffer[buffer.length - ndigits] = cast(char)c; |
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622 } |
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623 result = new char[ndigits]; |
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624 result[] = buffer[buffer.length - ndigits .. buffer.length]; |
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625 } |
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626 return result; |
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627 } |
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628 |
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629 private char[] lengthToString(ulong u) |
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630 { char[ulong.sizeof * 3] buffer; |
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631 int ndigits; |
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632 char[] result; |
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633 |
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634 if (u < 0x1_0000_0000) |
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635 return lengthToString(cast(uint)u); |
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636 ndigits = 0; |
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637 while (u) |
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638 { |
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639 char c = cast(char)((u % 10) + '0'); |
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640 u /= 10; |
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641 ndigits++; |
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642 buffer[buffer.length - ndigits] = c; |
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643 } |
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644 result = new char[ndigits]; |
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645 result[] = buffer[buffer.length - ndigits .. buffer.length]; |
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646 return result; |
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647 } |
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648 |
| 1 | 649 class TypeInfo_StaticArray : TypeInfo |
| 650 { | |
| 651 char[] toString() | |
| 652 { | |
|
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653 return value.toString() ~ "[" ~ lengthToString(len) ~ "]"; |
| 1 | 654 } |
| 655 | |
| 656 int opEquals(Object o) | |
| 657 { TypeInfo_StaticArray c; | |
| 658 | |
| 659 return cast(int) | |
| 660 (this is o || | |
| 661 ((c = cast(TypeInfo_StaticArray)o) !is null && | |
| 662 this.len == c.len && | |
| 663 this.value == c.value)); | |
| 664 } | |
| 665 | |
| 666 hash_t getHash(void *p) | |
| 667 { size_t sz = value.tsize(); | |
| 668 hash_t hash = 0; | |
| 669 for (size_t i = 0; i < len; i++) | |
| 670 hash += value.getHash(p + i * sz); | |
| 671 return hash; | |
| 672 } | |
| 673 | |
| 674 int equals(void *p1, void *p2) | |
| 675 { | |
| 676 size_t sz = value.tsize(); | |
| 677 | |
| 678 for (size_t u = 0; u < len; u++) | |
| 679 { | |
| 680 if (!value.equals(p1 + u * sz, p2 + u * sz)) | |
| 681 return 0; | |
| 682 } | |
| 683 return 1; | |
| 684 } | |
| 685 | |
| 686 int compare(void *p1, void *p2) | |
| 687 { | |
| 688 size_t sz = value.tsize(); | |
| 689 | |
| 690 for (size_t u = 0; u < len; u++) | |
| 691 { | |
| 692 int result = value.compare(p1 + u * sz, p2 + u * sz); | |
| 693 if (result) | |
| 694 return result; | |
| 695 } | |
| 696 return 0; | |
| 697 } | |
| 698 | |
| 699 size_t tsize() | |
| 700 { | |
| 701 return len * value.tsize(); | |
| 702 } | |
| 703 | |
| 704 void swap(void *p1, void *p2) | |
| 705 { void* tmp; | |
| 706 size_t sz = value.tsize(); | |
| 707 ubyte[16] buffer; | |
| 708 void* pbuffer; | |
| 709 | |
| 710 if (sz < buffer.sizeof) | |
| 711 tmp = buffer.ptr; | |
|
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712 else { |
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713 if (value.flags() & 1) |
| 1 | 714 tmp = pbuffer = (new void[sz]).ptr; |
|
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715 else |
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716 tmp = pbuffer = (new byte[sz]).ptr; |
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717 } |
| 1 | 718 |
| 719 for (size_t u = 0; u < len; u += sz) | |
| 720 { size_t o = u * sz; | |
| 721 memcpy(tmp, p1 + o, sz); | |
| 722 memcpy(p1 + o, p2 + o, sz); | |
| 723 memcpy(p2 + o, tmp, sz); | |
| 724 } | |
| 725 if (pbuffer) | |
| 726 delete pbuffer; | |
| 727 } | |
| 728 | |
| 729 void[] init() { return value.init(); } | |
| 730 TypeInfo next() { return value; } | |
| 731 uint flags() { return value.flags(); } | |
| 732 | |
| 733 TypeInfo value; | |
| 734 size_t len; | |
| 735 } | |
| 736 | |
| 737 class TypeInfo_AssociativeArray : TypeInfo | |
| 738 { | |
| 739 char[] toString() | |
| 740 { | |
| 741 return value.toString() ~ "[" ~ key.toString() ~ "]"; | |
| 742 } | |
| 743 | |
| 744 int opEquals(Object o) | |
| 745 { TypeInfo_AssociativeArray c; | |
| 746 | |
| 747 return this is o || | |
| 748 ((c = cast(TypeInfo_AssociativeArray)o) !is null && | |
| 749 this.key == c.key && | |
| 750 this.value == c.value); | |
| 751 } | |
| 752 | |
| 753 // BUG: need to add the rest of the functions | |
| 754 | |
| 755 size_t tsize() | |
| 756 { | |
| 757 return (char[int]).sizeof; | |
| 758 } | |
| 759 | |
| 760 TypeInfo next() { return value; } | |
| 761 uint flags() { return 1; } | |
| 762 | |
| 763 TypeInfo value; | |
| 764 TypeInfo key; | |
| 765 } | |
| 766 | |
| 767 class TypeInfo_Function : TypeInfo | |
| 768 { | |
| 769 char[] toString() | |
| 770 { | |
| 771 return next.toString() ~ "()"; | |
| 772 } | |
| 773 | |
| 774 int opEquals(Object o) | |
| 775 { TypeInfo_Function c; | |
| 776 | |
| 777 return this is o || | |
| 778 ((c = cast(TypeInfo_Function)o) !is null && | |
| 779 this.next == c.next); | |
| 780 } | |
| 781 | |
| 782 // BUG: need to add the rest of the functions | |
| 783 | |
| 784 size_t tsize() | |
| 785 { | |
| 786 return 0; // no size for functions | |
| 787 } | |
| 788 | |
| 789 TypeInfo next; | |
| 790 } | |
| 791 | |
| 792 class TypeInfo_Delegate : TypeInfo | |
| 793 { | |
| 794 char[] toString() | |
| 795 { | |
| 796 return next.toString() ~ " delegate()"; | |
| 797 } | |
| 798 | |
| 799 int opEquals(Object o) | |
| 800 { TypeInfo_Delegate c; | |
| 801 | |
| 802 return this is o || | |
| 803 ((c = cast(TypeInfo_Delegate)o) !is null && | |
| 804 this.next == c.next); | |
| 805 } | |
| 806 | |
| 807 // BUG: need to add the rest of the functions | |
| 808 | |
| 809 size_t tsize() | |
| 810 { alias int delegate() dg; | |
| 811 return dg.sizeof; | |
| 812 } | |
| 813 | |
| 814 uint flags() { return 1; } | |
| 815 | |
| 816 TypeInfo next; | |
| 817 } | |
| 818 | |
| 819 class TypeInfo_Class : TypeInfo | |
| 820 { | |
| 821 char[] toString() { return info.name; } | |
| 822 | |
| 823 int opEquals(Object o) | |
| 824 { TypeInfo_Class c; | |
| 825 | |
| 826 return this is o || | |
| 827 ((c = cast(TypeInfo_Class)o) !is null && | |
| 828 this.info.name == c.classinfo.name); | |
| 829 } | |
| 830 | |
| 831 hash_t getHash(void *p) | |
| 832 { | |
| 833 Object o = *cast(Object*)p; | |
| 834 assert(o); | |
| 835 return o.toHash(); | |
| 836 } | |
| 837 | |
| 838 int equals(void *p1, void *p2) | |
| 839 { | |
| 840 Object o1 = *cast(Object*)p1; | |
| 841 Object o2 = *cast(Object*)p2; | |
| 842 | |
| 843 return (o1 is o2) || (o1 && o1.opEquals(o2)); | |
| 844 } | |
| 845 | |
| 846 int compare(void *p1, void *p2) | |
| 847 { | |
| 848 Object o1 = *cast(Object*)p1; | |
| 849 Object o2 = *cast(Object*)p2; | |
| 850 int c = 0; | |
| 851 | |
| 852 // Regard null references as always being "less than" | |
| 853 if (o1 !is o2) | |
| 854 { | |
| 855 if (o1) | |
| 856 { if (!o2) | |
| 857 c = 1; | |
| 858 else | |
| 859 c = o1.opCmp(o2); | |
| 860 } | |
| 861 else | |
| 862 c = -1; | |
| 863 } | |
| 864 return c; | |
| 865 } | |
| 866 | |
| 867 size_t tsize() | |
| 868 { | |
| 869 return Object.sizeof; | |
| 870 } | |
| 871 | |
| 872 uint flags() { return 1; } | |
| 873 | |
| 874 OffsetTypeInfo[] offTi() | |
| 875 { | |
| 876 return (info.flags & 4) ? info.offTi : null; | |
| 877 } | |
| 878 | |
| 879 ClassInfo info; | |
| 880 } | |
| 881 | |
| 882 class TypeInfo_Interface : TypeInfo | |
| 883 { | |
| 884 char[] toString() { return info.name; } | |
| 885 | |
| 886 int opEquals(Object o) | |
| 887 { TypeInfo_Interface c; | |
| 888 | |
| 889 return this is o || | |
| 890 ((c = cast(TypeInfo_Interface)o) !is null && | |
| 891 this.info.name == c.classinfo.name); | |
| 892 } | |
| 893 | |
| 894 hash_t getHash(void *p) | |
| 895 { | |
| 896 Interface* pi = **cast(Interface ***)*cast(void**)p; | |
| 897 Object o = cast(Object)(*cast(void**)p - pi.offset); | |
| 898 assert(o); | |
| 899 return o.toHash(); | |
| 900 } | |
| 901 | |
| 902 int equals(void *p1, void *p2) | |
| 903 { | |
| 904 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 905 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 906 pi = **cast(Interface ***)*cast(void**)p2; | |
| 907 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 908 | |
| 909 return o1 == o2 || (o1 && o1.opCmp(o2) == 0); | |
| 910 } | |
| 911 | |
| 912 int compare(void *p1, void *p2) | |
| 913 { | |
| 914 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 915 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 916 pi = **cast(Interface ***)*cast(void**)p2; | |
| 917 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 918 int c = 0; | |
| 919 | |
| 920 // Regard null references as always being "less than" | |
| 921 if (o1 != o2) | |
| 922 { | |
| 923 if (o1) | |
| 924 { if (!o2) | |
| 925 c = 1; | |
| 926 else | |
| 927 c = o1.opCmp(o2); | |
| 928 } | |
| 929 else | |
| 930 c = -1; | |
| 931 } | |
| 932 return c; | |
| 933 } | |
| 934 | |
| 935 size_t tsize() | |
| 936 { | |
| 937 return Object.sizeof; | |
| 938 } | |
| 939 | |
| 940 uint flags() { return 1; } | |
| 941 | |
| 942 ClassInfo info; | |
| 943 } | |
| 944 | |
| 945 class TypeInfo_Struct : TypeInfo | |
| 946 { | |
| 947 char[] toString() { return name; } | |
| 948 | |
| 949 int opEquals(Object o) | |
| 950 { TypeInfo_Struct s; | |
| 951 | |
| 952 return this is o || | |
| 953 ((s = cast(TypeInfo_Struct)o) !is null && | |
| 954 this.name == s.name && | |
| 955 this.init.length == s.init.length); | |
| 956 } | |
| 957 | |
| 958 hash_t getHash(void *p) | |
| 959 { hash_t h; | |
| 960 | |
| 961 assert(p); | |
| 962 if (xtoHash) | |
| 963 { //printf("getHash() using xtoHash\n"); | |
| 964 h = (*xtoHash)(p); | |
| 965 } | |
| 966 else | |
| 967 { | |
| 968 //printf("getHash() using default hash\n"); | |
| 969 // A sorry hash algorithm. | |
| 970 // Should use the one for strings. | |
| 971 // BUG: relies on the GC not moving objects | |
| 972 for (size_t i = 0; i < init.length; i++) | |
| 973 { h = h * 9 + *cast(ubyte*)p; | |
| 974 p++; | |
| 975 } | |
| 976 } | |
| 977 return h; | |
| 978 } | |
| 979 | |
| 73 | 980 int equals(void *p1, void *p2) |
| 1 | 981 { int c; |
| 982 | |
| 983 if (p1 == p2) | |
| 984 c = 1; | |
| 985 else if (!p1 || !p2) | |
| 986 c = 0; | |
| 987 else if (xopEquals) | |
| 988 c = (*xopEquals)(p1, p2); | |
| 989 else | |
| 990 // BUG: relies on the GC not moving objects | |
| 991 c = (memcmp(p1, p2, init.length) == 0); | |
| 992 return c; | |
| 993 } | |
| 994 | |
| 72 | 995 int compare(void *p1, void *p2) |
| 1 | 996 { |
| 997 int c = 0; | |
| 998 | |
| 999 // Regard null references as always being "less than" | |
| 1000 if (p1 != p2) | |
| 1001 { | |
| 1002 if (p1) | |
| 1003 { if (!p2) | |
| 1004 c = 1; | |
| 1005 else if (xopCmp) | |
| 1006 c = (*xopCmp)(p1, p2); | |
| 1007 else | |
| 1008 // BUG: relies on the GC not moving objects | |
| 1009 c = memcmp(p1, p2, init.length); | |
| 1010 } | |
| 1011 else | |
| 1012 c = -1; | |
| 1013 } | |
| 1014 return c; | |
| 1015 } | |
| 1016 | |
| 1017 size_t tsize() | |
| 1018 { | |
| 1019 return init.length; | |
| 1020 } | |
| 1021 | |
| 1022 void[] init() { return m_init; } | |
| 1023 | |
| 1024 uint flags() { return m_flags; } | |
| 1025 | |
| 1026 char[] name; | |
| 1027 void[] m_init; // initializer; init.ptr == null if 0 initialize | |
| 1028 | |
| 1029 hash_t function(void*) xtoHash; | |
| 1030 int function(void*,void*) xopEquals; | |
| 1031 int function(void*,void*) xopCmp; | |
| 1032 char[] function(void*) xtoString; | |
| 1033 | |
| 1034 uint m_flags; | |
| 1035 } | |
| 1036 | |
| 1037 class TypeInfo_Tuple : TypeInfo | |
| 1038 { | |
| 1039 TypeInfo[] elements; | |
| 1040 | |
| 1041 char[] toString() | |
| 1042 { | |
| 1043 char[] s; | |
| 1044 s = "("; | |
| 1045 foreach (i, element; elements) | |
| 1046 { | |
| 1047 if (i) | |
| 1048 s ~= ','; | |
| 1049 s ~= element.toString(); | |
| 1050 } | |
| 1051 s ~= ")"; | |
| 1052 return s; | |
| 1053 } | |
| 1054 | |
| 1055 int opEquals(Object o) | |
| 1056 { | |
| 1057 if (this is o) | |
| 1058 return 1; | |
| 1059 | |
| 1060 auto t = cast(TypeInfo_Tuple)o; | |
| 1061 if (t && elements.length == t.elements.length) | |
| 1062 { | |
| 1063 for (size_t i = 0; i < elements.length; i++) | |
| 1064 { | |
| 1065 if (elements[i] != t.elements[i]) | |
| 1066 return 0; | |
| 1067 } | |
| 1068 return 1; | |
| 1069 } | |
| 1070 return 0; | |
| 1071 } | |
| 1072 | |
| 1073 hash_t getHash(void *p) | |
| 1074 { | |
| 1075 assert(0); | |
| 1076 } | |
| 1077 | |
| 1078 int equals(void *p1, void *p2) | |
| 1079 { | |
| 1080 assert(0); | |
| 1081 } | |
| 1082 | |
| 1083 int compare(void *p1, void *p2) | |
| 1084 { | |
| 1085 assert(0); | |
| 1086 } | |
| 1087 | |
| 1088 size_t tsize() | |
| 1089 { | |
| 1090 assert(0); | |
| 1091 } | |
| 1092 | |
| 1093 void swap(void *p1, void *p2) | |
| 1094 { | |
| 1095 assert(0); | |
| 1096 } | |
| 1097 } | |
| 52 | 1098 |
| 1099 class TypeInfo_Const : TypeInfo | |
| 1100 { | |
| 1101 char[] toString() { return "const " ~ base.toString(); } | |
| 1102 | |
| 1103 int opEquals(Object o) { return base.opEquals(o); } | |
| 1104 hash_t getHash(void *p) { return base.getHash(p); } | |
| 1105 int equals(void *p1, void *p2) { return base.equals(p1, p2); } | |
| 1106 int compare(void *p1, void *p2) { return base.compare(p1, p2); } | |
| 1107 size_t tsize() { return base.tsize(); } | |
| 1108 void swap(void *p1, void *p2) { return base.swap(p1, p2); } | |
| 1109 | |
| 1110 TypeInfo next() { return base.next(); } | |
| 1111 uint flags() { return base.flags(); } | |
| 1112 void[] init() { return base.init(); } | |
| 1113 | |
| 1114 TypeInfo base; | |
| 1115 } | |
| 1116 | |
| 1117 class TypeInfo_Invariant : TypeInfo_Const | |
| 1118 { | |
| 1119 char[] toString() { return "invariant " ~ base.toString(); } | |
| 1120 } | |
| 1121 | |
| 1 | 1122 /** |
| 1123 * All recoverable exceptions should be derived from class Exception. | |
| 1124 */ | |
| 1125 class Exception : Object | |
| 1126 { | |
| 1127 char[] msg; | |
| 1128 | |
| 1129 /** | |
| 1130 * Constructor; msg is a descriptive message for the exception. | |
| 1131 */ | |
| 1132 this(char[] msg) | |
| 1133 { | |
| 1134 this.msg = msg; | |
| 1135 } | |
| 1136 | |
|
86
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
73
diff
changeset
|
1137 void print() |
|
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
73
diff
changeset
|
1138 { |
|
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
73
diff
changeset
|
1139 char[] s = toString(); |
|
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
73
diff
changeset
|
1140 printf("%.*s\n", s.length, s.ptr); |
|
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
73
diff
changeset
|
1141 } |
|
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
73
diff
changeset
|
1142 |
| 1 | 1143 char[] toString() { return msg; } |
| 1144 } | |
| 1145 | |
| 1146 /** | |
| 1147 * All irrecoverable exceptions should be derived from class Error. | |
| 1148 */ | |
| 1149 class Error : Exception | |
| 1150 { | |
| 1151 Error next; | |
| 1152 | |
| 1153 /** | |
| 1154 * Constructor; msg is a descriptive message for the exception. | |
| 1155 */ | |
| 1156 this(char[] msg) | |
| 1157 { | |
| 1158 super(msg); | |
| 1159 } | |
| 1160 | |
| 1161 this(char[] msg, Error next) | |
| 1162 { | |
| 1163 super(msg); | |
| 1164 this.next = next; | |
| 1165 } | |
| 1166 } | |
| 1167 | |
| 1168 //extern (C) int nullext = 0; | |
| 52 | 1169 |