Mercurial > projects > ldc
annotate lphobos/internal/objectimpl.d @ 883:b52d5de7783f
GC defines and linkage changes.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Thu, 08 Jan 2009 18:20:02 +0100 |
| parents | eef8ac26c66c |
| children |
| 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 /* |
|
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36 * This copy is modified to work with LDC |
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37 * by Tomas Lindquist Olsen, September 2007 |
| 89 | 38 */ |
| 1 | 39 |
| 40 module object; | |
| 41 | |
| 89 | 42 import std.outofmemory; |
| 1 | 43 |
| 52 | 44 /** |
| 45 * An unsigned integral type large enough to span the memory space. Use for | |
| 46 * array indices and pointer offsets for maximal portability to | |
| 47 * architectures that have different memory address ranges. This is | |
| 48 * analogous to C's size_t. | |
| 49 */ | |
| 50 alias typeof(int.sizeof) size_t; | |
| 51 | |
| 52 /** | |
| 53 * A signed integral type large enough to span the memory space. Use for | |
| 54 * pointer differences and for size_t differences for maximal portability to | |
| 55 * architectures that have different memory address ranges. This is | |
| 56 * analogous to C's ptrdiff_t. | |
| 57 */ | |
| 58 alias typeof(cast(void*)0 - cast(void*)0) ptrdiff_t; | |
| 59 | |
| 60 alias size_t hash_t; | |
| 61 | |
| 1 | 62 extern (C) |
| 63 { /// C's printf function. | |
| 64 int printf(char *, ...); | |
| 52 | 65 void trace_term(); |
| 1 | 66 |
| 67 int memcmp(void *, void *, size_t); | |
| 68 void* memcpy(void *, void *, size_t); | |
| 69 void* calloc(size_t, size_t); | |
| 70 void* realloc(void*, size_t); | |
| 71 void free(void*); | |
| 72 | |
| 73 //Object _d_newclass(ClassInfo ci); | |
| 74 } | |
| 75 | |
| 76 /// Standard boolean type. | |
| 77 alias bool bit; | |
| 78 | |
| 52 | 79 alias char[] string; |
| 80 alias wchar[] wstring; | |
| 81 alias dchar[] dstring; | |
| 1 | 82 |
| 83 /+ | |
| 52 | 84 |
| 1 | 85 /* ************************* |
| 86 * Internal struct pointed to by the hidden .monitor member. | |
| 87 */ | |
| 88 struct Monitor | |
| 89 { | |
| 90 void delegate(Object)[] delegates; | |
| 91 | |
| 92 /* More stuff goes here defined by internal/monitor.c */ | |
| 93 } | |
| 52 | 94 |
| 1 | 95 +/ |
| 96 | |
| 97 /****************** | |
| 98 * All D class objects inherit from Object. | |
| 99 */ | |
| 100 class Object | |
| 101 { | |
| 102 void print() | |
| 103 { | |
| 104 char[] s = toString(); | |
| 105 printf("%.*s\n", s.length, s.ptr); | |
| 106 } | |
| 107 | |
| 108 /** | |
| 109 * Convert Object to a human readable string. | |
| 110 */ | |
| 111 char[] toString() | |
| 112 { | |
| 126 | 113 return this.classinfo.name; |
| 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 | |
| 126 | 139 throw new Error("need opCmp for class " ~ this.classinfo.name); |
| 1 | 140 } |
| 141 | |
| 142 /** | |
| 143 * Returns !=0 if this object does have the same contents as obj. | |
| 144 */ | |
| 145 int opEquals(Object o) | |
| 146 { | |
| 147 return cast(int)(this is o); | |
| 148 } | |
| 149 | |
| 150 /* ** | |
| 151 * Call delegate dg, passing this to it, when this object gets destroyed. | |
| 152 * Use extreme caution, as the list of delegates is stored in a place | |
| 153 * not known to the gc. Thus, if any objects pointed to by one of these | |
| 154 * delegates gets freed by the gc, calling the delegate will cause a | |
| 155 * crash. | |
| 156 * This is only for use by library developers, as it will need to be | |
| 157 * redone if weak pointers are added or a moving gc is developed. | |
| 158 */ | |
| 159 final void notifyRegister(void delegate(Object) dg) | |
| 160 { | |
| 52 | 161 /+ |
| 1 | 162 //printf("notifyRegister(dg = %llx, o = %p)\n", dg, this); |
| 52 | 163 synchronized (this) |
| 1 | 164 { |
| 165 Monitor* m = cast(Monitor*)(cast(void**)this)[1]; | |
| 166 foreach (inout x; m.delegates) | |
| 167 { | |
| 168 if (!x || x == dg) | |
| 169 { x = dg; | |
| 170 return; | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 // Increase size of delegates[] | |
| 175 auto len = m.delegates.length; | |
| 176 auto startlen = len; | |
| 177 if (len == 0) | |
| 178 { | |
| 179 len = 4; | |
| 180 auto p = calloc((void delegate(Object)).sizeof, len); | |
| 181 if (!p) | |
| 182 _d_OutOfMemory(); | |
| 183 m.delegates = (cast(void delegate(Object)*)p)[0 .. len]; | |
| 184 } | |
| 185 else | |
| 186 { | |
| 187 len += len + 4; | |
| 188 auto p = realloc(m.delegates.ptr, (void delegate(Object)).sizeof * len); | |
| 189 if (!p) | |
| 190 _d_OutOfMemory(); | |
| 191 m.delegates = (cast(void delegate(Object)*)p)[0 .. len]; | |
| 192 m.delegates[startlen .. len] = null; | |
| 193 } | |
| 194 m.delegates[startlen] = dg; | |
| 52 | 195 } |
| 196 +/ | |
| 1 | 197 } |
| 198 | |
| 199 /* ** | |
| 200 * Remove delegate dg from the notify list. | |
| 201 * This is only for use by library developers, as it will need to be | |
| 202 * redone if weak pointers are added or a moving gc is developed. | |
| 203 */ | |
| 204 final void notifyUnRegister(void delegate(Object) dg) | |
| 205 { | |
| 52 | 206 /+ |
| 207 synchronized (this) | |
| 1 | 208 { |
| 209 Monitor* m = cast(Monitor*)(cast(void**)this)[1]; | |
| 210 foreach (inout x; m.delegates) | |
| 211 { | |
| 212 if (x == dg) | |
| 213 x = null; | |
| 214 } | |
| 52 | 215 } |
| 216 +/ | |
| 1 | 217 } |
| 218 | |
| 219 /****** | |
| 220 * Create instance of class specified by classname. | |
| 221 * The class must either have no constructors or have | |
| 222 * a default constructor. | |
| 223 * Returns: | |
| 224 * null if failed | |
| 225 */ | |
| 52 | 226 static Object factory(char[] classname) |
| 1 | 227 { |
| 52 | 228 /+ |
| 42 | 229 auto ci = ClassInfo.find(classname); |
| 1 | 230 if (ci) |
| 231 { | |
| 232 return ci.create(); | |
| 42 | 233 } |
| 52 | 234 +/ |
| 1 | 235 return null; |
| 52 | 236 } |
| 1 | 237 } |
| 238 | |
| 239 /+ | |
| 240 extern (C) void _d_notify_release(Object o) | |
| 241 { | |
| 242 //printf("_d_notify_release(o = %p)\n", o); | |
| 243 Monitor* m = cast(Monitor*)(cast(void**)o)[1]; | |
| 244 if (m.delegates.length) | |
| 245 { | |
| 246 auto dgs = m.delegates; | |
| 247 synchronized (o) | |
| 248 { | |
| 249 dgs = m.delegates; | |
| 250 m.delegates = null; | |
| 251 } | |
| 252 | |
| 253 foreach (dg; dgs) | |
| 254 { | |
| 255 if (dg) | |
| 256 { //printf("calling dg = %llx (%p)\n", dg, o); | |
| 257 dg(o); | |
| 258 } | |
| 259 } | |
| 260 | |
| 261 free(dgs.ptr); | |
| 262 } | |
| 263 } | |
| 264 | |
| 89 | 265 +/ |
| 266 | |
| 1 | 267 /** |
| 268 * Information about an interface. | |
| 269 * A pointer to this appears as the first entry in the interface's vtbl[]. | |
| 270 */ | |
| 271 struct Interface | |
| 272 { | |
| 273 ClassInfo classinfo; /// .classinfo for this interface (not for containing class) | |
| 274 void *[] vtbl; | |
| 275 int offset; /// offset to Interface 'this' from Object 'this' | |
| 276 } | |
| 277 | |
| 278 import std.moduleinit; | |
| 89 | 279 |
| 1 | 280 /** |
| 281 * Runtime type information about a class. Can be retrieved for any class type | |
| 282 * or instance by using the .classinfo property. | |
| 283 * A pointer to this appears as the first entry in the class's vtbl[]. | |
| 284 */ | |
| 285 class ClassInfo : Object | |
| 286 { | |
| 287 byte[] init; /** class static initializer | |
| 288 * (init.length gives size in bytes of class) | |
| 289 */ | |
| 290 char[] name; /// class name | |
| 291 void *[] vtbl; /// virtual function pointer table | |
| 292 Interface[] interfaces; /// interfaces this class implements | |
| 293 ClassInfo base; /// base class | |
| 294 void *destructor; | |
| 89 | 295 void function(Object) classInvariant; |
| 1 | 296 uint flags; |
| 297 // 1: // IUnknown | |
| 298 // 2: // has no possible pointers into GC memory | |
| 299 // 4: // has offTi[] member | |
| 300 // 8: // has constructors | |
| 301 void *deallocator; | |
| 302 OffsetTypeInfo[] offTi; | |
| 303 void function(Object) defaultConstructor; // default Constructor | |
| 304 | |
| 305 /************* | |
| 306 * Search all modules for ClassInfo corresponding to classname. | |
| 307 * Returns: null if not found | |
| 308 */ | |
| 309 static ClassInfo find(char[] classname) | |
| 310 { | |
| 89 | 311 /+foreach (m; ModuleInfo.modules()) |
| 1 | 312 { |
| 313 //writefln("module %s, %d", m.name, m.localClasses.length); | |
| 314 foreach (c; m.localClasses) | |
| 315 { | |
| 316 //writefln("\tclass %s", c.name); | |
| 317 if (c.name == classname) | |
| 318 return c; | |
| 319 } | |
| 89 | 320 }+/ |
| 1 | 321 return null; |
| 322 } | |
| 323 | |
| 324 /******************** | |
| 325 * Create instance of Object represented by 'this'. | |
| 326 */ | |
| 327 Object create() | |
| 328 { | |
| 89 | 329 /+if (flags & 8 && !defaultConstructor) |
| 1 | 330 return null; |
| 331 Object o = _d_newclass(this); | |
| 332 if (flags & 8 && defaultConstructor) | |
| 333 { | |
| 334 defaultConstructor(o); | |
| 335 } | |
| 336 return o; | |
| 89 | 337 +/ |
| 338 return null; | |
| 1 | 339 } |
| 340 } | |
| 341 | |
| 89 | 342 //private import std.string; |
| 1 | 343 |
| 52 | 344 |
| 1 | 345 /** |
| 346 * Array of pairs giving the offset and type information for each | |
| 347 * member in an aggregate. | |
| 348 */ | |
| 349 struct OffsetTypeInfo | |
| 350 { | |
| 351 size_t offset; /// Offset of member from start of object | |
| 352 TypeInfo ti; /// TypeInfo for this member | |
| 353 } | |
| 354 | |
| 52 | 355 private int string_cmp(char[] s1, char[] s2) |
| 356 { | |
| 357 auto len = s1.length; | |
| 358 if (s2.length < len) | |
| 359 len = s2.length; | |
| 360 int result = memcmp(s1.ptr, s2.ptr, len); | |
| 361 if (result == 0) | |
| 362 result = cast(int)(cast(ptrdiff_t)s1.length - cast(ptrdiff_t)s2.length); | |
| 363 return result; | |
| 364 } | |
| 365 | |
| 1 | 366 /** |
| 367 * Runtime type information about a type. | |
| 368 * Can be retrieved for any type using a | |
| 369 * <a href="../expression.html#typeidexpression">TypeidExpression</a>. | |
| 370 */ | |
| 371 class TypeInfo | |
| 372 { | |
| 373 hash_t toHash() | |
| 374 { hash_t hash; | |
| 375 | |
| 376 foreach (char c; this.toString()) | |
| 377 hash = hash * 9 + c; | |
| 378 return hash; | |
| 379 } | |
| 380 | |
| 381 int opCmp(Object o) | |
| 382 { | |
| 383 if (this is o) | |
| 384 return 0; | |
| 385 TypeInfo ti = cast(TypeInfo)o; | |
| 386 if (ti is null) | |
| 387 return 1; | |
| 52 | 388 return string_cmp(this.toString(), ti.toString()); |
| 1 | 389 } |
| 390 | |
| 391 int opEquals(Object o) | |
| 392 { | |
| 393 /* TypeInfo instances are singletons, but duplicates can exist | |
| 394 * across DLL's. Therefore, comparing for a name match is | |
| 395 * sufficient. | |
| 396 */ | |
| 397 if (this is o) | |
| 398 return 1; | |
| 399 TypeInfo ti = cast(TypeInfo)o; | |
| 400 return cast(int)(ti && this.toString() == ti.toString()); | |
| 401 } | |
| 402 | |
| 403 /// Returns a hash of the instance of a type. | |
| 404 hash_t getHash(void *p) { return cast(uint)p; } | |
| 405 | |
| 406 /// Compares two instances for equality. | |
| 407 int equals(void *p1, void *p2) { return cast(int)(p1 == p2); } | |
| 408 | |
| 409 /// Compares two instances for <, ==, or >. | |
| 410 int compare(void *p1, void *p2) { return 0; } | |
| 411 | |
| 412 /// Returns size of the type. | |
| 413 size_t tsize() { return 0; } | |
| 414 | |
| 415 /// Swaps two instances of the type. | |
| 416 void swap(void *p1, void *p2) | |
| 417 { | |
| 418 size_t n = tsize(); | |
| 419 for (size_t i = 0; i < n; i++) | |
| 420 { byte t; | |
| 421 | |
| 422 t = (cast(byte *)p1)[i]; | |
| 423 (cast(byte *)p1)[i] = (cast(byte *)p2)[i]; | |
| 424 (cast(byte *)p2)[i] = t; | |
| 425 } | |
| 426 } | |
| 427 | |
| 428 /// Get TypeInfo for 'next' type, as defined by what kind of type this is, | |
| 429 /// null if none. | |
| 430 TypeInfo next() { return null; } | |
| 431 | |
| 432 /// Return default initializer, null if default initialize to 0 | |
| 433 void[] init() { return null; } | |
| 434 | |
| 435 /// Get flags for type: 1 means GC should scan for pointers | |
| 436 uint flags() { return 0; } | |
| 437 | |
| 438 /// Get type information on the contents of the type; null if not available | |
| 439 OffsetTypeInfo[] offTi() { return null; } | |
| 440 } | |
| 441 | |
| 442 class TypeInfo_Typedef : TypeInfo | |
| 443 { | |
| 444 char[] toString() { return name; } | |
| 445 | |
| 446 int opEquals(Object o) | |
| 447 { TypeInfo_Typedef c; | |
| 448 | |
| 449 return cast(int) | |
| 450 (this is o || | |
| 451 ((c = cast(TypeInfo_Typedef)o) !is null && | |
| 452 this.name == c.name && | |
| 453 this.base == c.base)); | |
| 454 } | |
| 455 | |
| 456 hash_t getHash(void *p) { return base.getHash(p); } | |
| 457 int equals(void *p1, void *p2) { return base.equals(p1, p2); } | |
| 458 int compare(void *p1, void *p2) { return base.compare(p1, p2); } | |
| 459 size_t tsize() { return base.tsize(); } | |
| 460 void swap(void *p1, void *p2) { return base.swap(p1, p2); } | |
| 461 | |
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462 TypeInfo next() { return base; } |
| 1 | 463 uint flags() { return base.flags(); } |
| 464 void[] init() { return m_init.length ? m_init : base.init(); } | |
| 465 | |
| 466 TypeInfo base; | |
| 467 char[] name; | |
| 468 void[] m_init; | |
| 469 } | |
| 470 | |
| 471 class TypeInfo_Enum : TypeInfo_Typedef | |
| 472 { | |
| 473 } | |
| 474 | |
| 475 class TypeInfo_Pointer : TypeInfo | |
| 476 { | |
| 477 char[] toString() { return m_next.toString() ~ "*"; } | |
| 478 | |
| 479 int opEquals(Object o) | |
| 480 { TypeInfo_Pointer c; | |
| 481 | |
| 482 return this is o || | |
| 483 ((c = cast(TypeInfo_Pointer)o) !is null && | |
| 484 this.m_next == c.m_next); | |
| 485 } | |
| 486 | |
| 487 hash_t getHash(void *p) | |
| 488 { | |
| 489 return cast(uint)*cast(void* *)p; | |
| 490 } | |
| 491 | |
| 492 int equals(void *p1, void *p2) | |
| 493 { | |
| 494 return cast(int)(*cast(void* *)p1 == *cast(void* *)p2); | |
| 495 } | |
| 496 | |
| 497 int compare(void *p1, void *p2) | |
| 498 { | |
| 499 if (*cast(void* *)p1 < *cast(void* *)p2) | |
| 500 return -1; | |
| 501 else if (*cast(void* *)p1 > *cast(void* *)p2) | |
| 502 return 1; | |
| 503 else | |
| 504 return 0; | |
| 505 } | |
| 506 | |
| 507 size_t tsize() | |
| 508 { | |
| 509 return (void*).sizeof; | |
| 510 } | |
| 511 | |
| 512 void swap(void *p1, void *p2) | |
| 513 { void* tmp; | |
| 514 tmp = *cast(void**)p1; | |
| 515 *cast(void**)p1 = *cast(void**)p2; | |
| 516 *cast(void**)p2 = tmp; | |
| 517 } | |
| 518 | |
| 519 TypeInfo next() { return m_next; } | |
| 520 uint flags() { return 1; } | |
| 521 | |
| 522 TypeInfo m_next; | |
| 523 } | |
| 524 | |
| 525 class TypeInfo_Array : TypeInfo | |
| 526 { | |
| 527 char[] toString() { return value.toString() ~ "[]"; } | |
| 528 | |
| 529 int opEquals(Object o) | |
| 530 { TypeInfo_Array c; | |
| 531 | |
| 532 return cast(int) | |
| 533 (this is o || | |
| 534 ((c = cast(TypeInfo_Array)o) !is null && | |
| 535 this.value == c.value)); | |
| 536 } | |
| 537 | |
| 538 hash_t getHash(void *p) | |
| 539 { size_t sz = value.tsize(); | |
| 540 hash_t hash = 0; | |
| 541 void[] a = *cast(void[]*)p; | |
| 542 for (size_t i = 0; i < a.length; i++) | |
| 543 hash += value.getHash(a.ptr + i * sz); | |
| 544 return hash; | |
| 545 } | |
| 546 | |
| 547 int equals(void *p1, void *p2) | |
| 548 { | |
| 549 void[] a1 = *cast(void[]*)p1; | |
| 550 void[] a2 = *cast(void[]*)p2; | |
| 551 if (a1.length != a2.length) | |
| 552 return 0; | |
| 553 size_t sz = value.tsize(); | |
| 554 for (size_t i = 0; i < a1.length; i++) | |
| 555 { | |
| 556 if (!value.equals(a1.ptr + i * sz, a2.ptr + i * sz)) | |
| 557 return 0; | |
| 558 } | |
| 559 return 1; | |
| 560 } | |
| 561 | |
| 562 int compare(void *p1, void *p2) | |
| 563 { | |
| 564 void[] a1 = *cast(void[]*)p1; | |
| 565 void[] a2 = *cast(void[]*)p2; | |
| 566 size_t sz = value.tsize(); | |
| 567 size_t len = a1.length; | |
| 568 | |
| 569 if (a2.length < len) | |
| 570 len = a2.length; | |
| 571 for (size_t u = 0; u < len; u++) | |
| 572 { | |
| 573 int result = value.compare(a1.ptr + u * sz, a2.ptr + u * sz); | |
| 574 if (result) | |
| 575 return result; | |
| 576 } | |
| 577 return cast(int)a1.length - cast(int)a2.length; | |
| 578 } | |
| 579 | |
| 580 size_t tsize() | |
| 581 { | |
| 582 return (void[]).sizeof; | |
| 583 } | |
| 584 | |
| 585 void swap(void *p1, void *p2) | |
| 586 { void[] tmp; | |
| 587 tmp = *cast(void[]*)p1; | |
| 588 *cast(void[]*)p1 = *cast(void[]*)p2; | |
| 589 *cast(void[]*)p2 = tmp; | |
| 590 } | |
| 591 | |
| 592 TypeInfo value; | |
| 593 | |
| 594 TypeInfo next() | |
| 595 { | |
| 596 return value; | |
| 597 } | |
| 598 | |
| 599 uint flags() { return 1; } | |
| 600 } | |
| 601 | |
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602 private const char[10] digits = "0123456789"; /// 0..9 |
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603 |
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604 private char[] lengthToString(uint u) |
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605 { char[uint.sizeof * 3] buffer = void; |
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606 int ndigits; |
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607 char[] result; |
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608 |
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609 ndigits = 0; |
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610 if (u < 10) |
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611 // Avoid storage allocation for simple stuff |
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612 result = digits[u .. u + 1]; |
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613 else |
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614 { |
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615 while (u) |
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616 { |
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617 uint c = (u % 10) + '0'; |
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618 u /= 10; |
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619 ndigits++; |
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620 buffer[buffer.length - ndigits] = cast(char)c; |
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621 } |
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622 result = new char[ndigits]; |
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623 result[] = buffer[buffer.length - ndigits .. buffer.length]; |
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624 } |
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625 return result; |
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626 } |
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627 |
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628 private char[] lengthToString(ulong u) |
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629 { char[ulong.sizeof * 3] buffer; |
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630 int ndigits; |
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631 char[] result; |
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632 |
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633 if (u < 0x1_0000_0000) |
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634 return lengthToString(cast(uint)u); |
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635 ndigits = 0; |
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636 while (u) |
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637 { |
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638 char c = cast(char)((u % 10) + '0'); |
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639 u /= 10; |
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640 ndigits++; |
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641 buffer[buffer.length - ndigits] = c; |
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642 } |
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643 result = new char[ndigits]; |
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644 result[] = buffer[buffer.length - ndigits .. buffer.length]; |
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645 return result; |
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646 } |
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647 |
| 1 | 648 class TypeInfo_StaticArray : TypeInfo |
| 649 { | |
| 650 char[] toString() | |
| 651 { | |
|
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652 return value.toString() ~ "[" ~ lengthToString(len) ~ "]"; |
| 1 | 653 } |
| 654 | |
| 655 int opEquals(Object o) | |
| 656 { TypeInfo_StaticArray c; | |
| 657 | |
| 658 return cast(int) | |
| 659 (this is o || | |
| 660 ((c = cast(TypeInfo_StaticArray)o) !is null && | |
| 661 this.len == c.len && | |
| 662 this.value == c.value)); | |
| 663 } | |
| 664 | |
| 665 hash_t getHash(void *p) | |
| 666 { size_t sz = value.tsize(); | |
| 667 hash_t hash = 0; | |
| 668 for (size_t i = 0; i < len; i++) | |
| 669 hash += value.getHash(p + i * sz); | |
| 670 return hash; | |
| 671 } | |
| 672 | |
| 673 int equals(void *p1, void *p2) | |
| 674 { | |
| 675 size_t sz = value.tsize(); | |
| 676 | |
| 677 for (size_t u = 0; u < len; u++) | |
| 678 { | |
| 679 if (!value.equals(p1 + u * sz, p2 + u * sz)) | |
| 680 return 0; | |
| 681 } | |
| 682 return 1; | |
| 683 } | |
| 684 | |
| 685 int compare(void *p1, void *p2) | |
| 686 { | |
| 687 size_t sz = value.tsize(); | |
| 688 | |
| 689 for (size_t u = 0; u < len; u++) | |
| 690 { | |
| 691 int result = value.compare(p1 + u * sz, p2 + u * sz); | |
| 692 if (result) | |
| 693 return result; | |
| 694 } | |
| 695 return 0; | |
| 696 } | |
| 697 | |
| 698 size_t tsize() | |
| 699 { | |
| 700 return len * value.tsize(); | |
| 701 } | |
| 702 | |
| 703 void swap(void *p1, void *p2) | |
| 704 { void* tmp; | |
| 705 size_t sz = value.tsize(); | |
| 706 ubyte[16] buffer; | |
| 707 void* pbuffer; | |
| 708 | |
| 709 if (sz < buffer.sizeof) | |
| 710 tmp = buffer.ptr; | |
|
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711 else { |
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712 if (value.flags() & 1) |
| 1 | 713 tmp = pbuffer = (new void[sz]).ptr; |
|
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714 else |
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715 tmp = pbuffer = (new byte[sz]).ptr; |
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716 } |
| 1 | 717 |
| 718 for (size_t u = 0; u < len; u += sz) | |
| 719 { size_t o = u * sz; | |
| 720 memcpy(tmp, p1 + o, sz); | |
| 721 memcpy(p1 + o, p2 + o, sz); | |
| 722 memcpy(p2 + o, tmp, sz); | |
| 723 } | |
| 724 if (pbuffer) | |
| 725 delete pbuffer; | |
| 726 } | |
| 727 | |
| 728 void[] init() { return value.init(); } | |
| 729 TypeInfo next() { return value; } | |
| 730 uint flags() { return value.flags(); } | |
| 731 | |
| 732 TypeInfo value; | |
| 733 size_t len; | |
| 734 } | |
| 735 | |
| 736 class TypeInfo_AssociativeArray : TypeInfo | |
| 737 { | |
| 738 char[] toString() | |
| 739 { | |
| 740 return value.toString() ~ "[" ~ key.toString() ~ "]"; | |
| 741 } | |
| 742 | |
| 743 int opEquals(Object o) | |
| 744 { TypeInfo_AssociativeArray c; | |
| 745 | |
| 746 return this is o || | |
| 747 ((c = cast(TypeInfo_AssociativeArray)o) !is null && | |
| 748 this.key == c.key && | |
| 749 this.value == c.value); | |
| 750 } | |
| 751 | |
| 752 // BUG: need to add the rest of the functions | |
| 753 | |
| 754 size_t tsize() | |
| 755 { | |
| 756 return (char[int]).sizeof; | |
| 757 } | |
| 758 | |
| 759 TypeInfo next() { return value; } | |
| 760 uint flags() { return 1; } | |
| 761 | |
| 762 TypeInfo value; | |
| 763 TypeInfo key; | |
| 764 } | |
| 765 | |
| 766 class TypeInfo_Function : TypeInfo | |
| 767 { | |
| 768 char[] toString() | |
| 769 { | |
| 770 return next.toString() ~ "()"; | |
| 771 } | |
| 772 | |
| 773 int opEquals(Object o) | |
| 774 { TypeInfo_Function c; | |
| 775 | |
| 776 return this is o || | |
| 777 ((c = cast(TypeInfo_Function)o) !is null && | |
| 778 this.next == c.next); | |
| 779 } | |
| 780 | |
| 781 // BUG: need to add the rest of the functions | |
| 782 | |
| 783 size_t tsize() | |
| 784 { | |
| 785 return 0; // no size for functions | |
| 786 } | |
| 787 | |
| 788 TypeInfo next; | |
| 789 } | |
| 790 | |
| 791 class TypeInfo_Delegate : TypeInfo | |
| 792 { | |
| 793 char[] toString() | |
| 794 { | |
| 795 return next.toString() ~ " delegate()"; | |
| 796 } | |
| 797 | |
| 798 int opEquals(Object o) | |
| 799 { TypeInfo_Delegate c; | |
| 800 | |
| 801 return this is o || | |
| 802 ((c = cast(TypeInfo_Delegate)o) !is null && | |
| 803 this.next == c.next); | |
| 804 } | |
| 805 | |
| 806 // BUG: need to add the rest of the functions | |
| 807 | |
| 808 size_t tsize() | |
| 809 { alias int delegate() dg; | |
| 810 return dg.sizeof; | |
| 811 } | |
| 812 | |
| 813 uint flags() { return 1; } | |
| 814 | |
| 815 TypeInfo next; | |
| 816 } | |
| 817 | |
| 818 class TypeInfo_Class : TypeInfo | |
| 819 { | |
| 820 char[] toString() { return info.name; } | |
| 821 | |
| 822 int opEquals(Object o) | |
| 823 { TypeInfo_Class c; | |
| 824 | |
| 825 return this is o || | |
| 826 ((c = cast(TypeInfo_Class)o) !is null && | |
| 827 this.info.name == c.classinfo.name); | |
| 828 } | |
| 829 | |
| 830 hash_t getHash(void *p) | |
| 831 { | |
| 832 Object o = *cast(Object*)p; | |
| 833 assert(o); | |
| 834 return o.toHash(); | |
| 835 } | |
| 836 | |
| 837 int equals(void *p1, void *p2) | |
| 838 { | |
| 839 Object o1 = *cast(Object*)p1; | |
| 840 Object o2 = *cast(Object*)p2; | |
| 841 | |
| 842 return (o1 is o2) || (o1 && o1.opEquals(o2)); | |
| 843 } | |
| 844 | |
| 845 int compare(void *p1, void *p2) | |
| 846 { | |
| 847 Object o1 = *cast(Object*)p1; | |
| 848 Object o2 = *cast(Object*)p2; | |
| 849 int c = 0; | |
| 850 | |
| 851 // Regard null references as always being "less than" | |
| 852 if (o1 !is o2) | |
| 853 { | |
| 854 if (o1) | |
| 855 { if (!o2) | |
| 856 c = 1; | |
| 857 else | |
| 858 c = o1.opCmp(o2); | |
| 859 } | |
| 860 else | |
| 861 c = -1; | |
| 862 } | |
| 863 return c; | |
| 864 } | |
| 865 | |
| 866 size_t tsize() | |
| 867 { | |
| 868 return Object.sizeof; | |
| 869 } | |
| 870 | |
| 871 uint flags() { return 1; } | |
| 872 | |
| 873 OffsetTypeInfo[] offTi() | |
| 874 { | |
| 875 return (info.flags & 4) ? info.offTi : null; | |
| 876 } | |
| 877 | |
| 878 ClassInfo info; | |
| 879 } | |
| 880 | |
| 881 class TypeInfo_Interface : TypeInfo | |
| 882 { | |
| 883 char[] toString() { return info.name; } | |
| 884 | |
| 885 int opEquals(Object o) | |
| 886 { TypeInfo_Interface c; | |
| 887 | |
| 888 return this is o || | |
| 889 ((c = cast(TypeInfo_Interface)o) !is null && | |
| 890 this.info.name == c.classinfo.name); | |
| 891 } | |
| 892 | |
| 893 hash_t getHash(void *p) | |
| 894 { | |
| 895 Interface* pi = **cast(Interface ***)*cast(void**)p; | |
| 896 Object o = cast(Object)(*cast(void**)p - pi.offset); | |
| 897 assert(o); | |
| 898 return o.toHash(); | |
| 899 } | |
| 900 | |
| 901 int equals(void *p1, void *p2) | |
| 902 { | |
| 903 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 904 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 905 pi = **cast(Interface ***)*cast(void**)p2; | |
| 906 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 907 | |
| 908 return o1 == o2 || (o1 && o1.opCmp(o2) == 0); | |
| 909 } | |
| 910 | |
| 911 int compare(void *p1, void *p2) | |
| 912 { | |
| 913 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 914 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 915 pi = **cast(Interface ***)*cast(void**)p2; | |
| 916 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 917 int c = 0; | |
| 918 | |
| 919 // Regard null references as always being "less than" | |
| 920 if (o1 != o2) | |
| 921 { | |
| 922 if (o1) | |
| 923 { if (!o2) | |
| 924 c = 1; | |
| 925 else | |
| 926 c = o1.opCmp(o2); | |
| 927 } | |
| 928 else | |
| 929 c = -1; | |
| 930 } | |
| 931 return c; | |
| 932 } | |
| 933 | |
| 934 size_t tsize() | |
| 935 { | |
| 936 return Object.sizeof; | |
| 937 } | |
| 938 | |
| 939 uint flags() { return 1; } | |
| 940 | |
| 941 ClassInfo info; | |
| 942 } | |
| 943 | |
| 944 class TypeInfo_Struct : TypeInfo | |
| 945 { | |
| 946 char[] toString() { return name; } | |
| 947 | |
| 948 int opEquals(Object o) | |
| 949 { TypeInfo_Struct s; | |
| 950 | |
| 951 return this is o || | |
| 952 ((s = cast(TypeInfo_Struct)o) !is null && | |
| 953 this.name == s.name && | |
| 954 this.init.length == s.init.length); | |
| 955 } | |
| 956 | |
| 957 hash_t getHash(void *p) | |
| 958 { hash_t h; | |
| 959 | |
| 960 assert(p); | |
| 961 if (xtoHash) | |
| 962 { //printf("getHash() using xtoHash\n"); | |
| 963 h = (*xtoHash)(p); | |
| 964 } | |
| 965 else | |
| 966 { | |
| 967 //printf("getHash() using default hash\n"); | |
| 968 // A sorry hash algorithm. | |
| 969 // Should use the one for strings. | |
| 970 // BUG: relies on the GC not moving objects | |
| 971 for (size_t i = 0; i < init.length; i++) | |
| 972 { h = h * 9 + *cast(ubyte*)p; | |
| 973 p++; | |
| 974 } | |
| 975 } | |
| 976 return h; | |
| 977 } | |
| 978 | |
| 73 | 979 int equals(void *p1, void *p2) |
| 1 | 980 { int c; |
| 981 | |
| 982 if (p1 == p2) | |
| 983 c = 1; | |
| 984 else if (!p1 || !p2) | |
| 985 c = 0; | |
| 986 else if (xopEquals) | |
| 987 c = (*xopEquals)(p1, p2); | |
| 988 else | |
| 989 // BUG: relies on the GC not moving objects | |
| 990 c = (memcmp(p1, p2, init.length) == 0); | |
| 991 return c; | |
| 992 } | |
| 993 | |
| 72 | 994 int compare(void *p1, void *p2) |
| 1 | 995 { |
| 996 int c = 0; | |
| 997 | |
| 998 // Regard null references as always being "less than" | |
| 999 if (p1 != p2) | |
| 1000 { | |
| 1001 if (p1) | |
| 1002 { if (!p2) | |
| 1003 c = 1; | |
| 1004 else if (xopCmp) | |
| 1005 c = (*xopCmp)(p1, p2); | |
| 1006 else | |
| 1007 // BUG: relies on the GC not moving objects | |
| 1008 c = memcmp(p1, p2, init.length); | |
| 1009 } | |
| 1010 else | |
| 1011 c = -1; | |
| 1012 } | |
| 1013 return c; | |
| 1014 } | |
| 1015 | |
| 1016 size_t tsize() | |
| 1017 { | |
| 1018 return init.length; | |
| 1019 } | |
| 1020 | |
| 1021 void[] init() { return m_init; } | |
| 1022 | |
| 1023 uint flags() { return m_flags; } | |
| 1024 | |
| 1025 char[] name; | |
| 1026 void[] m_init; // initializer; init.ptr == null if 0 initialize | |
| 1027 | |
| 1028 hash_t function(void*) xtoHash; | |
| 1029 int function(void*,void*) xopEquals; | |
| 1030 int function(void*,void*) xopCmp; | |
| 1031 char[] function(void*) xtoString; | |
| 1032 | |
| 1033 uint m_flags; | |
| 1034 } | |
| 1035 | |
| 1036 class TypeInfo_Tuple : TypeInfo | |
| 1037 { | |
| 1038 TypeInfo[] elements; | |
| 1039 | |
| 1040 char[] toString() | |
| 1041 { | |
| 1042 char[] s; | |
| 1043 s = "("; | |
| 1044 foreach (i, element; elements) | |
| 1045 { | |
| 1046 if (i) | |
| 1047 s ~= ','; | |
| 1048 s ~= element.toString(); | |
| 1049 } | |
| 1050 s ~= ")"; | |
| 1051 return s; | |
| 1052 } | |
| 1053 | |
| 1054 int opEquals(Object o) | |
| 1055 { | |
| 1056 if (this is o) | |
| 1057 return 1; | |
| 1058 | |
| 1059 auto t = cast(TypeInfo_Tuple)o; | |
| 1060 if (t && elements.length == t.elements.length) | |
| 1061 { | |
| 1062 for (size_t i = 0; i < elements.length; i++) | |
| 1063 { | |
| 1064 if (elements[i] != t.elements[i]) | |
| 1065 return 0; | |
| 1066 } | |
| 1067 return 1; | |
| 1068 } | |
| 1069 return 0; | |
| 1070 } | |
| 1071 | |
| 1072 hash_t getHash(void *p) | |
| 1073 { | |
| 1074 assert(0); | |
| 1075 } | |
| 1076 | |
| 1077 int equals(void *p1, void *p2) | |
| 1078 { | |
| 1079 assert(0); | |
| 1080 } | |
| 1081 | |
| 1082 int compare(void *p1, void *p2) | |
| 1083 { | |
| 1084 assert(0); | |
| 1085 } | |
| 1086 | |
| 1087 size_t tsize() | |
| 1088 { | |
| 1089 assert(0); | |
| 1090 } | |
| 1091 | |
| 1092 void swap(void *p1, void *p2) | |
| 1093 { | |
| 1094 assert(0); | |
| 1095 } | |
| 1096 } | |
| 52 | 1097 |
| 1098 class TypeInfo_Const : TypeInfo | |
| 1099 { | |
| 1100 char[] toString() { return "const " ~ base.toString(); } | |
| 1101 | |
| 1102 int opEquals(Object o) { return base.opEquals(o); } | |
| 1103 hash_t getHash(void *p) { return base.getHash(p); } | |
| 1104 int equals(void *p1, void *p2) { return base.equals(p1, p2); } | |
| 1105 int compare(void *p1, void *p2) { return base.compare(p1, p2); } | |
| 1106 size_t tsize() { return base.tsize(); } | |
| 1107 void swap(void *p1, void *p2) { return base.swap(p1, p2); } | |
| 1108 | |
| 1109 TypeInfo next() { return base.next(); } | |
| 1110 uint flags() { return base.flags(); } | |
| 1111 void[] init() { return base.init(); } | |
| 1112 | |
| 1113 TypeInfo base; | |
| 1114 } | |
| 1115 | |
| 1116 class TypeInfo_Invariant : TypeInfo_Const | |
| 1117 { | |
| 1118 char[] toString() { return "invariant " ~ base.toString(); } | |
| 1119 } | |
| 1120 | |
| 1 | 1121 /** |
|
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1122 * Information about each module. |
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1123 */ |
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1124 class ModuleInfo |
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1125 { |
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1126 char[] name; |
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1127 ModuleInfo[] importedModules; |
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1128 ClassInfo[] localClasses; |
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1129 |
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1130 uint flags; // initialization state |
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1131 |
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1132 void function() ctor; |
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1133 void function() dtor; |
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1134 void function() unitTest; |
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1135 |
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1136 void* xgetMembers; |
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1137 void function() ictor; |
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1138 |
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1139 /****************** |
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1140 * Return collection of all modules in the program. |
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1141 */ |
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1142 static int opApply(int delegate(ref ModuleInfo) dg) { |
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1143 foreach (ref mod; std.moduleinit._moduleinfo_array) |
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1144 if (auto i = dg(mod)) return i; |
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1145 return 0; |
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1146 } |
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1147 } |
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1148 |
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1149 struct ModuleReference |
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1150 { |
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1151 ModuleReference* next; |
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1152 ModuleInfo mod; |
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1153 } |
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1154 extern(C) ModuleReference* _Dmodule_ref; |
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1155 |
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1156 /** |
| 1 | 1157 * All recoverable exceptions should be derived from class Exception. |
| 1158 */ | |
| 1159 class Exception : Object | |
| 1160 { | |
| 1161 char[] msg; | |
| 1162 | |
| 1163 /** | |
| 1164 * Constructor; msg is a descriptive message for the exception. | |
| 1165 */ | |
| 1166 this(char[] msg) | |
| 1167 { | |
| 1168 this.msg = msg; | |
| 1169 } | |
| 1170 | |
|
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1171 void print() |
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1172 { |
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1173 char[] s = toString(); |
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1174 printf("%.*s\n", s.length, s.ptr); |
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1175 } |
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1176 |
| 1 | 1177 char[] toString() { return msg; } |
| 1178 } | |
| 1179 | |
| 1180 /** | |
| 1181 * All irrecoverable exceptions should be derived from class Error. | |
| 1182 */ | |
| 1183 class Error : Exception | |
| 1184 { | |
| 1185 Error next; | |
| 1186 | |
| 1187 /** | |
| 1188 * Constructor; msg is a descriptive message for the exception. | |
| 1189 */ | |
| 1190 this(char[] msg) | |
| 1191 { | |
| 1192 super(msg); | |
| 1193 } | |
| 1194 | |
| 1195 this(char[] msg, Error next) | |
| 1196 { | |
| 1197 super(msg); | |
| 1198 this.next = next; | |
| 1199 } | |
| 1200 } | |
| 1201 | |
| 1202 //extern (C) int nullext = 0; |