Mercurial > projects > ldc
annotate lphobos/internal/objectimpl.d @ 58:2c3cd3596187 trunk
[svn r62] Added support for TypeInfo _Array, _Function, _Pointer, _Delegate, _Enum
Added initial support for CatExp aka 'a ~ b'
Fixed global constant static arrays initialized with string literals
Fixed casting any dynamic array to void*
Fixed new expression with temporary storage
Fixed alias declarations in function scope
Fixed relational comparisons of pointers
| author | lindquist |
|---|---|
| date | Thu, 25 Oct 2007 09:02:55 +0200 |
| parents | 28e99b04a132 |
| children | d7e764e62462 |
| 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 | |
| 35 | |
| 36 module object; | |
| 37 | |
| 38 //import std.outofmemory; | |
| 39 | |
| 52 | 40 /** |
| 41 * An unsigned integral type large enough to span the memory space. Use for | |
| 42 * array indices and pointer offsets for maximal portability to | |
| 43 * architectures that have different memory address ranges. This is | |
| 44 * analogous to C's size_t. | |
| 45 */ | |
| 46 alias typeof(int.sizeof) size_t; | |
| 47 | |
| 48 /** | |
| 49 * A signed integral type large enough to span the memory space. Use for | |
| 50 * pointer differences and for size_t differences for maximal portability to | |
| 51 * architectures that have different memory address ranges. This is | |
| 52 * analogous to C's ptrdiff_t. | |
| 53 */ | |
| 54 alias typeof(cast(void*)0 - cast(void*)0) ptrdiff_t; | |
| 55 | |
| 56 alias size_t hash_t; | |
| 57 | |
| 1 | 58 extern (C) |
| 59 { /// C's printf function. | |
| 60 int printf(char *, ...); | |
| 52 | 61 void trace_term(); |
| 1 | 62 |
| 63 int memcmp(void *, void *, size_t); | |
| 64 void* memcpy(void *, void *, size_t); | |
| 65 void* calloc(size_t, size_t); | |
| 66 void* realloc(void*, size_t); | |
| 67 void free(void*); | |
| 68 | |
| 69 //Object _d_newclass(ClassInfo ci); | |
| 70 } | |
| 71 | |
| 72 /// Standard boolean type. | |
| 73 alias bool bit; | |
| 74 | |
| 52 | 75 alias char[] string; |
| 76 alias wchar[] wstring; | |
| 77 alias dchar[] dstring; | |
| 1 | 78 |
| 79 /+ | |
| 52 | 80 |
| 1 | 81 /* ************************* |
| 82 * Internal struct pointed to by the hidden .monitor member. | |
| 83 */ | |
| 84 struct Monitor | |
| 85 { | |
| 86 void delegate(Object)[] delegates; | |
| 87 | |
| 88 /* More stuff goes here defined by internal/monitor.c */ | |
| 89 } | |
| 52 | 90 |
| 1 | 91 +/ |
| 92 | |
| 93 /****************** | |
| 94 * All D class objects inherit from Object. | |
| 95 */ | |
| 96 class Object | |
| 97 { | |
| 98 void print() | |
| 99 { | |
| 100 char[] s = toString(); | |
| 101 printf("%.*s\n", s.length, s.ptr); | |
| 102 } | |
| 103 | |
| 104 /** | |
| 105 * Convert Object to a human readable string. | |
| 106 */ | |
| 107 char[] toString() | |
| 108 { | |
| 109 //return this.classinfo.name; | |
| 52 | 110 return "object.Object (no classinfo yet)"; |
| 1 | 111 } |
| 112 | |
| 113 /** | |
| 114 * Compute hash function for Object. | |
| 115 */ | |
| 116 hash_t toHash() | |
| 117 { | |
| 118 // BUG: this prevents a compacting GC from working, needs to be fixed | |
| 52 | 119 return cast(hash_t)cast(void *)this; |
| 1 | 120 } |
| 121 | |
| 122 /** | |
| 123 * Compare with another Object obj. | |
| 124 * Returns: | |
| 125 * $(TABLE | |
| 126 * $(TR $(TD this < obj) $(TD < 0)) | |
| 127 * $(TR $(TD this == obj) $(TD 0)) | |
| 128 * $(TR $(TD this > obj) $(TD > 0)) | |
| 129 * ) | |
| 130 */ | |
| 131 int opCmp(Object o) | |
| 132 { | |
| 133 // BUG: this prevents a compacting GC from working, needs to be fixed | |
| 134 //return cast(int)cast(void *)this - cast(int)cast(void *)o; | |
| 135 | |
| 136 //throw new Error("need opCmp for class " ~ this.classinfo.name); | |
| 52 | 137 throw new Error("need opCmp for class unknown object.Object (no classinfo yet)"); |
| 1 | 138 } |
| 139 | |
| 140 /** | |
| 141 * Returns !=0 if this object does have the same contents as obj. | |
| 142 */ | |
| 143 int opEquals(Object o) | |
| 144 { | |
| 145 return cast(int)(this is o); | |
| 146 } | |
| 147 | |
| 148 /* ** | |
| 149 * Call delegate dg, passing this to it, when this object gets destroyed. | |
| 150 * Use extreme caution, as the list of delegates is stored in a place | |
| 151 * not known to the gc. Thus, if any objects pointed to by one of these | |
| 152 * delegates gets freed by the gc, calling the delegate will cause a | |
| 153 * crash. | |
| 154 * This is only for use by library developers, as it will need to be | |
| 155 * redone if weak pointers are added or a moving gc is developed. | |
| 156 */ | |
| 157 final void notifyRegister(void delegate(Object) dg) | |
| 158 { | |
| 52 | 159 /+ |
| 1 | 160 //printf("notifyRegister(dg = %llx, o = %p)\n", dg, this); |
| 52 | 161 synchronized (this) |
| 1 | 162 { |
| 163 Monitor* m = cast(Monitor*)(cast(void**)this)[1]; | |
| 164 foreach (inout x; m.delegates) | |
| 165 { | |
| 166 if (!x || x == dg) | |
| 167 { x = dg; | |
| 168 return; | |
| 169 } | |
| 170 } | |
| 171 | |
| 172 // Increase size of delegates[] | |
| 173 auto len = m.delegates.length; | |
| 174 auto startlen = len; | |
| 175 if (len == 0) | |
| 176 { | |
| 177 len = 4; | |
| 178 auto p = calloc((void delegate(Object)).sizeof, len); | |
| 179 if (!p) | |
| 180 _d_OutOfMemory(); | |
| 181 m.delegates = (cast(void delegate(Object)*)p)[0 .. len]; | |
| 182 } | |
| 183 else | |
| 184 { | |
| 185 len += len + 4; | |
| 186 auto p = realloc(m.delegates.ptr, (void delegate(Object)).sizeof * len); | |
| 187 if (!p) | |
| 188 _d_OutOfMemory(); | |
| 189 m.delegates = (cast(void delegate(Object)*)p)[0 .. len]; | |
| 190 m.delegates[startlen .. len] = null; | |
| 191 } | |
| 192 m.delegates[startlen] = dg; | |
| 52 | 193 } |
| 194 +/ | |
| 1 | 195 } |
| 196 | |
| 197 /* ** | |
| 198 * Remove delegate dg from the notify list. | |
| 199 * This is only for use by library developers, as it will need to be | |
| 200 * redone if weak pointers are added or a moving gc is developed. | |
| 201 */ | |
| 202 final void notifyUnRegister(void delegate(Object) dg) | |
| 203 { | |
| 52 | 204 /+ |
| 205 synchronized (this) | |
| 1 | 206 { |
| 207 Monitor* m = cast(Monitor*)(cast(void**)this)[1]; | |
| 208 foreach (inout x; m.delegates) | |
| 209 { | |
| 210 if (x == dg) | |
| 211 x = null; | |
| 212 } | |
| 52 | 213 } |
| 214 +/ | |
| 1 | 215 } |
| 216 | |
| 217 /****** | |
| 218 * Create instance of class specified by classname. | |
| 219 * The class must either have no constructors or have | |
| 220 * a default constructor. | |
| 221 * Returns: | |
| 222 * null if failed | |
| 223 */ | |
| 52 | 224 static Object factory(char[] classname) |
| 1 | 225 { |
| 52 | 226 /+ |
| 42 | 227 auto ci = ClassInfo.find(classname); |
| 1 | 228 if (ci) |
| 229 { | |
| 230 return ci.create(); | |
| 42 | 231 } |
| 52 | 232 +/ |
| 1 | 233 return null; |
| 52 | 234 } |
| 1 | 235 } |
| 236 | |
| 237 /+ | |
| 238 extern (C) void _d_notify_release(Object o) | |
| 239 { | |
| 240 //printf("_d_notify_release(o = %p)\n", o); | |
| 241 Monitor* m = cast(Monitor*)(cast(void**)o)[1]; | |
| 242 if (m.delegates.length) | |
| 243 { | |
| 244 auto dgs = m.delegates; | |
| 245 synchronized (o) | |
| 246 { | |
| 247 dgs = m.delegates; | |
| 248 m.delegates = null; | |
| 249 } | |
| 250 | |
| 251 foreach (dg; dgs) | |
| 252 { | |
| 253 if (dg) | |
| 254 { //printf("calling dg = %llx (%p)\n", dg, o); | |
| 255 dg(o); | |
| 256 } | |
| 257 } | |
| 258 | |
| 259 free(dgs.ptr); | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 /** | |
| 264 * Information about an interface. | |
| 265 * A pointer to this appears as the first entry in the interface's vtbl[]. | |
| 266 */ | |
| 267 struct Interface | |
| 268 { | |
| 269 ClassInfo classinfo; /// .classinfo for this interface (not for containing class) | |
| 270 void *[] vtbl; | |
| 271 int offset; /// offset to Interface 'this' from Object 'this' | |
| 272 } | |
| 273 | |
| 274 import std.moduleinit; | |
| 275 /** | |
| 276 * Runtime type information about a class. Can be retrieved for any class type | |
| 277 * or instance by using the .classinfo property. | |
| 278 * A pointer to this appears as the first entry in the class's vtbl[]. | |
| 279 */ | |
| 280 class ClassInfo : Object | |
| 281 { | |
| 282 byte[] init; /** class static initializer | |
| 283 * (init.length gives size in bytes of class) | |
| 284 */ | |
| 285 char[] name; /// class name | |
| 286 void *[] vtbl; /// virtual function pointer table | |
| 287 Interface[] interfaces; /// interfaces this class implements | |
| 288 ClassInfo base; /// base class | |
| 289 void *destructor; | |
| 290 void (*classInvariant)(Object); | |
| 291 uint flags; | |
| 292 // 1: // IUnknown | |
| 293 // 2: // has no possible pointers into GC memory | |
| 294 // 4: // has offTi[] member | |
| 295 // 8: // has constructors | |
| 296 void *deallocator; | |
| 297 OffsetTypeInfo[] offTi; | |
| 298 void function(Object) defaultConstructor; // default Constructor | |
| 299 | |
| 300 /************* | |
| 301 * Search all modules for ClassInfo corresponding to classname. | |
| 302 * Returns: null if not found | |
| 303 */ | |
| 304 static ClassInfo find(char[] classname) | |
| 305 { | |
| 306 foreach (m; ModuleInfo.modules()) | |
| 307 { | |
| 308 //writefln("module %s, %d", m.name, m.localClasses.length); | |
| 309 foreach (c; m.localClasses) | |
| 310 { | |
| 311 //writefln("\tclass %s", c.name); | |
| 312 if (c.name == classname) | |
| 313 return c; | |
| 314 } | |
| 315 } | |
| 316 return null; | |
| 317 } | |
| 318 | |
| 319 /******************** | |
| 320 * Create instance of Object represented by 'this'. | |
| 321 */ | |
| 322 Object create() | |
| 323 { | |
| 324 if (flags & 8 && !defaultConstructor) | |
| 325 return null; | |
| 326 Object o = _d_newclass(this); | |
| 327 if (flags & 8 && defaultConstructor) | |
| 328 { | |
| 329 defaultConstructor(o); | |
| 330 } | |
| 331 return o; | |
| 332 } | |
| 333 } | |
| 334 | |
| 335 private import std.string; | |
| 336 | |
| 52 | 337 +/ |
| 338 | |
| 1 | 339 /** |
| 340 * Array of pairs giving the offset and type information for each | |
| 341 * member in an aggregate. | |
| 342 */ | |
| 343 struct OffsetTypeInfo | |
| 344 { | |
| 345 size_t offset; /// Offset of member from start of object | |
| 346 TypeInfo ti; /// TypeInfo for this member | |
| 347 } | |
| 348 | |
| 52 | 349 private int string_cmp(char[] s1, char[] s2) |
| 350 { | |
| 351 auto len = s1.length; | |
| 352 if (s2.length < len) | |
| 353 len = s2.length; | |
| 354 int result = memcmp(s1.ptr, s2.ptr, len); | |
| 355 if (result == 0) | |
| 356 result = cast(int)(cast(ptrdiff_t)s1.length - cast(ptrdiff_t)s2.length); | |
| 357 return result; | |
| 358 } | |
| 359 | |
| 1 | 360 /** |
| 361 * Runtime type information about a type. | |
| 362 * Can be retrieved for any type using a | |
| 363 * <a href="../expression.html#typeidexpression">TypeidExpression</a>. | |
| 364 */ | |
| 365 class TypeInfo | |
| 366 { | |
| 367 hash_t toHash() | |
| 368 { hash_t hash; | |
| 369 | |
| 370 foreach (char c; this.toString()) | |
| 371 hash = hash * 9 + c; | |
| 372 return hash; | |
| 373 } | |
| 374 | |
| 375 int opCmp(Object o) | |
| 376 { | |
| 377 if (this is o) | |
| 378 return 0; | |
| 379 TypeInfo ti = cast(TypeInfo)o; | |
| 380 if (ti is null) | |
| 381 return 1; | |
| 52 | 382 return string_cmp(this.toString(), ti.toString()); |
| 1 | 383 } |
| 384 | |
| 385 int opEquals(Object o) | |
| 386 { | |
| 387 /* TypeInfo instances are singletons, but duplicates can exist | |
| 388 * across DLL's. Therefore, comparing for a name match is | |
| 389 * sufficient. | |
| 390 */ | |
| 391 if (this is o) | |
| 392 return 1; | |
| 393 TypeInfo ti = cast(TypeInfo)o; | |
| 394 return cast(int)(ti && this.toString() == ti.toString()); | |
| 395 } | |
| 396 | |
| 397 /// Returns a hash of the instance of a type. | |
| 398 hash_t getHash(void *p) { return cast(uint)p; } | |
| 399 | |
| 400 /// Compares two instances for equality. | |
| 401 int equals(void *p1, void *p2) { return cast(int)(p1 == p2); } | |
| 402 | |
| 403 /// Compares two instances for <, ==, or >. | |
| 404 int compare(void *p1, void *p2) { return 0; } | |
| 405 | |
| 406 /// Returns size of the type. | |
| 407 size_t tsize() { return 0; } | |
| 408 | |
| 409 /// Swaps two instances of the type. | |
| 410 void swap(void *p1, void *p2) | |
| 411 { | |
| 412 size_t n = tsize(); | |
| 413 for (size_t i = 0; i < n; i++) | |
| 414 { byte t; | |
| 415 | |
| 416 t = (cast(byte *)p1)[i]; | |
| 417 (cast(byte *)p1)[i] = (cast(byte *)p2)[i]; | |
| 418 (cast(byte *)p2)[i] = t; | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 /// Get TypeInfo for 'next' type, as defined by what kind of type this is, | |
| 423 /// null if none. | |
| 424 TypeInfo next() { return null; } | |
| 425 | |
| 426 /// Return default initializer, null if default initialize to 0 | |
| 427 void[] init() { return null; } | |
| 428 | |
| 429 /// Get flags for type: 1 means GC should scan for pointers | |
| 430 uint flags() { return 0; } | |
| 431 | |
| 432 /// Get type information on the contents of the type; null if not available | |
| 433 OffsetTypeInfo[] offTi() { return null; } | |
| 434 } | |
| 435 | |
| 436 class TypeInfo_Typedef : TypeInfo | |
| 437 { | |
| 438 char[] toString() { return name; } | |
| 439 | |
| 440 int opEquals(Object o) | |
| 441 { TypeInfo_Typedef c; | |
| 442 | |
| 443 return cast(int) | |
| 444 (this is o || | |
| 445 ((c = cast(TypeInfo_Typedef)o) !is null && | |
| 446 this.name == c.name && | |
| 447 this.base == c.base)); | |
| 448 } | |
| 449 | |
| 450 hash_t getHash(void *p) { return base.getHash(p); } | |
| 451 int equals(void *p1, void *p2) { return base.equals(p1, p2); } | |
| 452 int compare(void *p1, void *p2) { return base.compare(p1, p2); } | |
| 453 size_t tsize() { return base.tsize(); } | |
| 454 void swap(void *p1, void *p2) { return base.swap(p1, p2); } | |
| 455 | |
|
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456 TypeInfo next() { return base; } |
| 1 | 457 uint flags() { return base.flags(); } |
| 458 void[] init() { return m_init.length ? m_init : base.init(); } | |
| 459 | |
| 460 TypeInfo base; | |
| 461 char[] name; | |
| 462 void[] m_init; | |
| 463 } | |
| 464 | |
| 465 class TypeInfo_Enum : TypeInfo_Typedef | |
| 466 { | |
| 467 } | |
| 468 | |
| 469 class TypeInfo_Pointer : TypeInfo | |
| 470 { | |
| 471 char[] toString() { return m_next.toString() ~ "*"; } | |
| 472 | |
| 473 int opEquals(Object o) | |
| 474 { TypeInfo_Pointer c; | |
| 475 | |
| 476 return this is o || | |
| 477 ((c = cast(TypeInfo_Pointer)o) !is null && | |
| 478 this.m_next == c.m_next); | |
| 479 } | |
| 480 | |
| 481 hash_t getHash(void *p) | |
| 482 { | |
| 483 return cast(uint)*cast(void* *)p; | |
| 484 } | |
| 485 | |
| 486 int equals(void *p1, void *p2) | |
| 487 { | |
| 488 return cast(int)(*cast(void* *)p1 == *cast(void* *)p2); | |
| 489 } | |
| 490 | |
| 491 int compare(void *p1, void *p2) | |
| 492 { | |
| 493 if (*cast(void* *)p1 < *cast(void* *)p2) | |
| 494 return -1; | |
| 495 else if (*cast(void* *)p1 > *cast(void* *)p2) | |
| 496 return 1; | |
| 497 else | |
| 498 return 0; | |
| 499 } | |
| 500 | |
| 501 size_t tsize() | |
| 502 { | |
| 503 return (void*).sizeof; | |
| 504 } | |
| 505 | |
| 506 void swap(void *p1, void *p2) | |
| 507 { void* tmp; | |
| 508 tmp = *cast(void**)p1; | |
| 509 *cast(void**)p1 = *cast(void**)p2; | |
| 510 *cast(void**)p2 = tmp; | |
| 511 } | |
| 512 | |
| 513 TypeInfo next() { return m_next; } | |
| 514 uint flags() { return 1; } | |
| 515 | |
| 516 TypeInfo m_next; | |
| 517 } | |
| 518 | |
| 519 class TypeInfo_Array : TypeInfo | |
| 520 { | |
| 521 char[] toString() { return value.toString() ~ "[]"; } | |
| 522 | |
| 523 int opEquals(Object o) | |
| 524 { TypeInfo_Array c; | |
| 525 | |
| 526 return cast(int) | |
| 527 (this is o || | |
| 528 ((c = cast(TypeInfo_Array)o) !is null && | |
| 529 this.value == c.value)); | |
| 530 } | |
| 531 | |
| 532 hash_t getHash(void *p) | |
| 533 { size_t sz = value.tsize(); | |
| 534 hash_t hash = 0; | |
| 535 void[] a = *cast(void[]*)p; | |
| 536 for (size_t i = 0; i < a.length; i++) | |
| 537 hash += value.getHash(a.ptr + i * sz); | |
| 538 return hash; | |
| 539 } | |
| 540 | |
| 541 int equals(void *p1, void *p2) | |
| 542 { | |
| 543 void[] a1 = *cast(void[]*)p1; | |
| 544 void[] a2 = *cast(void[]*)p2; | |
| 545 if (a1.length != a2.length) | |
| 546 return 0; | |
| 547 size_t sz = value.tsize(); | |
| 548 for (size_t i = 0; i < a1.length; i++) | |
| 549 { | |
| 550 if (!value.equals(a1.ptr + i * sz, a2.ptr + i * sz)) | |
| 551 return 0; | |
| 552 } | |
| 553 return 1; | |
| 554 } | |
| 555 | |
| 556 int compare(void *p1, void *p2) | |
| 557 { | |
| 558 void[] a1 = *cast(void[]*)p1; | |
| 559 void[] a2 = *cast(void[]*)p2; | |
| 560 size_t sz = value.tsize(); | |
| 561 size_t len = a1.length; | |
| 562 | |
| 563 if (a2.length < len) | |
| 564 len = a2.length; | |
| 565 for (size_t u = 0; u < len; u++) | |
| 566 { | |
| 567 int result = value.compare(a1.ptr + u * sz, a2.ptr + u * sz); | |
| 568 if (result) | |
| 569 return result; | |
| 570 } | |
| 571 return cast(int)a1.length - cast(int)a2.length; | |
| 572 } | |
| 573 | |
| 574 size_t tsize() | |
| 575 { | |
| 576 return (void[]).sizeof; | |
| 577 } | |
| 578 | |
| 579 void swap(void *p1, void *p2) | |
| 580 { void[] tmp; | |
| 581 tmp = *cast(void[]*)p1; | |
| 582 *cast(void[]*)p1 = *cast(void[]*)p2; | |
| 583 *cast(void[]*)p2 = tmp; | |
| 584 } | |
| 585 | |
| 586 TypeInfo value; | |
| 587 | |
| 588 TypeInfo next() | |
| 589 { | |
| 590 return value; | |
| 591 } | |
| 592 | |
| 593 uint flags() { return 1; } | |
| 594 } | |
| 595 | |
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596 private const char[10] digits = "0123456789"; /// 0..9 |
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597 |
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598 private char[] lengthToString(uint u) |
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599 { char[uint.sizeof * 3] buffer = void; |
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600 int ndigits; |
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601 char[] result; |
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602 |
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603 ndigits = 0; |
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604 if (u < 10) |
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605 // Avoid storage allocation for simple stuff |
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606 result = digits[u .. u + 1]; |
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607 else |
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608 { |
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609 while (u) |
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610 { |
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611 uint c = (u % 10) + '0'; |
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612 u /= 10; |
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613 ndigits++; |
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614 buffer[buffer.length - ndigits] = cast(char)c; |
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615 } |
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616 result = new char[ndigits]; |
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617 result[] = buffer[buffer.length - ndigits .. buffer.length]; |
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618 } |
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619 return result; |
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620 } |
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621 |
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622 private char[] lengthToString(ulong u) |
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623 { char[ulong.sizeof * 3] buffer; |
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624 int ndigits; |
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625 char[] result; |
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626 |
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627 if (u < 0x1_0000_0000) |
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628 return lengthToString(cast(uint)u); |
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629 ndigits = 0; |
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630 while (u) |
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631 { |
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632 char c = cast(char)((u % 10) + '0'); |
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633 u /= 10; |
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634 ndigits++; |
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635 buffer[buffer.length - ndigits] = c; |
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636 } |
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637 result = new char[ndigits]; |
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638 result[] = buffer[buffer.length - ndigits .. buffer.length]; |
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639 return result; |
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640 } |
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641 |
| 1 | 642 class TypeInfo_StaticArray : TypeInfo |
| 643 { | |
| 644 char[] toString() | |
| 645 { | |
|
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646 return value.toString() ~ "[" ~ lengthToString(len) ~ "]"; |
| 1 | 647 } |
| 648 | |
| 649 int opEquals(Object o) | |
| 650 { TypeInfo_StaticArray c; | |
| 651 | |
| 652 return cast(int) | |
| 653 (this is o || | |
| 654 ((c = cast(TypeInfo_StaticArray)o) !is null && | |
| 655 this.len == c.len && | |
| 656 this.value == c.value)); | |
| 657 } | |
| 658 | |
| 659 hash_t getHash(void *p) | |
| 660 { size_t sz = value.tsize(); | |
| 661 hash_t hash = 0; | |
| 662 for (size_t i = 0; i < len; i++) | |
| 663 hash += value.getHash(p + i * sz); | |
| 664 return hash; | |
| 665 } | |
| 666 | |
| 667 int equals(void *p1, void *p2) | |
| 668 { | |
| 669 size_t sz = value.tsize(); | |
| 670 | |
| 671 for (size_t u = 0; u < len; u++) | |
| 672 { | |
| 673 if (!value.equals(p1 + u * sz, p2 + u * sz)) | |
| 674 return 0; | |
| 675 } | |
| 676 return 1; | |
| 677 } | |
| 678 | |
| 679 int compare(void *p1, void *p2) | |
| 680 { | |
| 681 size_t sz = value.tsize(); | |
| 682 | |
| 683 for (size_t u = 0; u < len; u++) | |
| 684 { | |
| 685 int result = value.compare(p1 + u * sz, p2 + u * sz); | |
| 686 if (result) | |
| 687 return result; | |
| 688 } | |
| 689 return 0; | |
| 690 } | |
| 691 | |
| 692 size_t tsize() | |
| 693 { | |
| 694 return len * value.tsize(); | |
| 695 } | |
| 696 | |
| 697 void swap(void *p1, void *p2) | |
| 698 { void* tmp; | |
| 699 size_t sz = value.tsize(); | |
| 700 ubyte[16] buffer; | |
| 701 void* pbuffer; | |
| 702 | |
| 703 if (sz < buffer.sizeof) | |
| 704 tmp = buffer.ptr; | |
|
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705 else { |
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706 if (value.flags() & 1) |
| 1 | 707 tmp = pbuffer = (new void[sz]).ptr; |
|
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708 else |
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709 tmp = pbuffer = (new byte[sz]).ptr; |
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710 } |
| 1 | 711 |
| 712 for (size_t u = 0; u < len; u += sz) | |
| 713 { size_t o = u * sz; | |
| 714 memcpy(tmp, p1 + o, sz); | |
| 715 memcpy(p1 + o, p2 + o, sz); | |
| 716 memcpy(p2 + o, tmp, sz); | |
| 717 } | |
| 718 if (pbuffer) | |
| 719 delete pbuffer; | |
| 720 } | |
| 721 | |
| 722 void[] init() { return value.init(); } | |
| 723 TypeInfo next() { return value; } | |
| 724 uint flags() { return value.flags(); } | |
| 725 | |
| 726 TypeInfo value; | |
| 727 size_t len; | |
| 728 } | |
| 729 | |
| 730 class TypeInfo_AssociativeArray : TypeInfo | |
| 731 { | |
| 732 char[] toString() | |
| 733 { | |
| 734 return value.toString() ~ "[" ~ key.toString() ~ "]"; | |
| 735 } | |
| 736 | |
| 737 int opEquals(Object o) | |
| 738 { TypeInfo_AssociativeArray c; | |
| 739 | |
| 740 return this is o || | |
| 741 ((c = cast(TypeInfo_AssociativeArray)o) !is null && | |
| 742 this.key == c.key && | |
| 743 this.value == c.value); | |
| 744 } | |
| 745 | |
| 746 // BUG: need to add the rest of the functions | |
| 747 | |
| 748 size_t tsize() | |
| 749 { | |
| 750 return (char[int]).sizeof; | |
| 751 } | |
| 752 | |
| 753 TypeInfo next() { return value; } | |
| 754 uint flags() { return 1; } | |
| 755 | |
| 756 TypeInfo value; | |
| 757 TypeInfo key; | |
| 758 } | |
| 759 | |
| 760 class TypeInfo_Function : TypeInfo | |
| 761 { | |
| 762 char[] toString() | |
| 763 { | |
| 764 return next.toString() ~ "()"; | |
| 765 } | |
| 766 | |
| 767 int opEquals(Object o) | |
| 768 { TypeInfo_Function c; | |
| 769 | |
| 770 return this is o || | |
| 771 ((c = cast(TypeInfo_Function)o) !is null && | |
| 772 this.next == c.next); | |
| 773 } | |
| 774 | |
| 775 // BUG: need to add the rest of the functions | |
| 776 | |
| 777 size_t tsize() | |
| 778 { | |
| 779 return 0; // no size for functions | |
| 780 } | |
| 781 | |
| 782 TypeInfo next; | |
| 783 } | |
| 784 | |
| 785 class TypeInfo_Delegate : TypeInfo | |
| 786 { | |
| 787 char[] toString() | |
| 788 { | |
| 789 return next.toString() ~ " delegate()"; | |
| 790 } | |
| 791 | |
| 792 int opEquals(Object o) | |
| 793 { TypeInfo_Delegate c; | |
| 794 | |
| 795 return this is o || | |
| 796 ((c = cast(TypeInfo_Delegate)o) !is null && | |
| 797 this.next == c.next); | |
| 798 } | |
| 799 | |
| 800 // BUG: need to add the rest of the functions | |
| 801 | |
| 802 size_t tsize() | |
| 803 { alias int delegate() dg; | |
| 804 return dg.sizeof; | |
| 805 } | |
| 806 | |
| 807 uint flags() { return 1; } | |
| 808 | |
| 809 TypeInfo next; | |
| 810 } | |
| 811 | |
|
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812 /+ |
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813 |
| 1 | 814 class TypeInfo_Class : TypeInfo |
| 815 { | |
| 816 char[] toString() { return info.name; } | |
| 817 | |
| 818 int opEquals(Object o) | |
| 819 { TypeInfo_Class c; | |
| 820 | |
| 821 return this is o || | |
| 822 ((c = cast(TypeInfo_Class)o) !is null && | |
| 823 this.info.name == c.classinfo.name); | |
| 824 } | |
| 825 | |
| 826 hash_t getHash(void *p) | |
| 827 { | |
| 828 Object o = *cast(Object*)p; | |
| 829 assert(o); | |
| 830 return o.toHash(); | |
| 831 } | |
| 832 | |
| 833 int equals(void *p1, void *p2) | |
| 834 { | |
| 835 Object o1 = *cast(Object*)p1; | |
| 836 Object o2 = *cast(Object*)p2; | |
| 837 | |
| 838 return (o1 is o2) || (o1 && o1.opEquals(o2)); | |
| 839 } | |
| 840 | |
| 841 int compare(void *p1, void *p2) | |
| 842 { | |
| 843 Object o1 = *cast(Object*)p1; | |
| 844 Object o2 = *cast(Object*)p2; | |
| 845 int c = 0; | |
| 846 | |
| 847 // Regard null references as always being "less than" | |
| 848 if (o1 !is o2) | |
| 849 { | |
| 850 if (o1) | |
| 851 { if (!o2) | |
| 852 c = 1; | |
| 853 else | |
| 854 c = o1.opCmp(o2); | |
| 855 } | |
| 856 else | |
| 857 c = -1; | |
| 858 } | |
| 859 return c; | |
| 860 } | |
| 861 | |
| 862 size_t tsize() | |
| 863 { | |
| 864 return Object.sizeof; | |
| 865 } | |
| 866 | |
| 867 uint flags() { return 1; } | |
| 868 | |
| 869 OffsetTypeInfo[] offTi() | |
| 870 { | |
| 871 return (info.flags & 4) ? info.offTi : null; | |
| 872 } | |
| 873 | |
| 874 ClassInfo info; | |
| 875 } | |
| 876 | |
| 877 class TypeInfo_Interface : TypeInfo | |
| 878 { | |
| 879 char[] toString() { return info.name; } | |
| 880 | |
| 881 int opEquals(Object o) | |
| 882 { TypeInfo_Interface c; | |
| 883 | |
| 884 return this is o || | |
| 885 ((c = cast(TypeInfo_Interface)o) !is null && | |
| 886 this.info.name == c.classinfo.name); | |
| 887 } | |
| 888 | |
| 889 hash_t getHash(void *p) | |
| 890 { | |
| 891 Interface* pi = **cast(Interface ***)*cast(void**)p; | |
| 892 Object o = cast(Object)(*cast(void**)p - pi.offset); | |
| 893 assert(o); | |
| 894 return o.toHash(); | |
| 895 } | |
| 896 | |
| 897 int equals(void *p1, void *p2) | |
| 898 { | |
| 899 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 900 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 901 pi = **cast(Interface ***)*cast(void**)p2; | |
| 902 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 903 | |
| 904 return o1 == o2 || (o1 && o1.opCmp(o2) == 0); | |
| 905 } | |
| 906 | |
| 907 int compare(void *p1, void *p2) | |
| 908 { | |
| 909 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 910 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 911 pi = **cast(Interface ***)*cast(void**)p2; | |
| 912 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 913 int c = 0; | |
| 914 | |
| 915 // Regard null references as always being "less than" | |
| 916 if (o1 != o2) | |
| 917 { | |
| 918 if (o1) | |
| 919 { if (!o2) | |
| 920 c = 1; | |
| 921 else | |
| 922 c = o1.opCmp(o2); | |
| 923 } | |
| 924 else | |
| 925 c = -1; | |
| 926 } | |
| 927 return c; | |
| 928 } | |
| 929 | |
| 930 size_t tsize() | |
| 931 { | |
| 932 return Object.sizeof; | |
| 933 } | |
| 934 | |
| 935 uint flags() { return 1; } | |
| 936 | |
| 937 ClassInfo info; | |
| 938 } | |
| 939 | |
| 940 class TypeInfo_Struct : TypeInfo | |
| 941 { | |
| 942 char[] toString() { return name; } | |
| 943 | |
| 944 int opEquals(Object o) | |
| 945 { TypeInfo_Struct s; | |
| 946 | |
| 947 return this is o || | |
| 948 ((s = cast(TypeInfo_Struct)o) !is null && | |
| 949 this.name == s.name && | |
| 950 this.init.length == s.init.length); | |
| 951 } | |
| 952 | |
| 953 hash_t getHash(void *p) | |
| 954 { hash_t h; | |
| 955 | |
| 956 assert(p); | |
| 957 if (xtoHash) | |
| 958 { //printf("getHash() using xtoHash\n"); | |
| 959 h = (*xtoHash)(p); | |
| 960 } | |
| 961 else | |
| 962 { | |
| 963 //printf("getHash() using default hash\n"); | |
| 964 // A sorry hash algorithm. | |
| 965 // Should use the one for strings. | |
| 966 // BUG: relies on the GC not moving objects | |
| 967 for (size_t i = 0; i < init.length; i++) | |
| 968 { h = h * 9 + *cast(ubyte*)p; | |
| 969 p++; | |
| 970 } | |
| 971 } | |
| 972 return h; | |
| 973 } | |
| 974 | |
| 975 int equals(void *p2, void *p1) | |
| 976 { int c; | |
| 977 | |
| 978 if (p1 == p2) | |
| 979 c = 1; | |
| 980 else if (!p1 || !p2) | |
| 981 c = 0; | |
| 982 else if (xopEquals) | |
| 983 c = (*xopEquals)(p1, p2); | |
| 984 else | |
| 985 // BUG: relies on the GC not moving objects | |
| 986 c = (memcmp(p1, p2, init.length) == 0); | |
| 987 return c; | |
| 988 } | |
| 989 | |
| 990 int compare(void *p2, void *p1) | |
| 991 { | |
| 992 int c = 0; | |
| 993 | |
| 994 // Regard null references as always being "less than" | |
| 995 if (p1 != p2) | |
| 996 { | |
| 997 if (p1) | |
| 998 { if (!p2) | |
| 999 c = 1; | |
| 1000 else if (xopCmp) | |
| 1001 c = (*xopCmp)(p1, p2); | |
| 1002 else | |
| 1003 // BUG: relies on the GC not moving objects | |
| 1004 c = memcmp(p1, p2, init.length); | |
| 1005 } | |
| 1006 else | |
| 1007 c = -1; | |
| 1008 } | |
| 1009 return c; | |
| 1010 } | |
| 1011 | |
| 1012 size_t tsize() | |
| 1013 { | |
| 1014 return init.length; | |
| 1015 } | |
| 1016 | |
| 1017 void[] init() { return m_init; } | |
| 1018 | |
| 1019 uint flags() { return m_flags; } | |
| 1020 | |
| 1021 char[] name; | |
| 1022 void[] m_init; // initializer; init.ptr == null if 0 initialize | |
| 1023 | |
| 1024 hash_t function(void*) xtoHash; | |
| 1025 int function(void*,void*) xopEquals; | |
| 1026 int function(void*,void*) xopCmp; | |
| 1027 char[] function(void*) xtoString; | |
| 1028 | |
| 1029 uint m_flags; | |
| 1030 } | |
| 1031 | |
| 1032 class TypeInfo_Tuple : TypeInfo | |
| 1033 { | |
| 1034 TypeInfo[] elements; | |
| 1035 | |
| 1036 char[] toString() | |
| 1037 { | |
| 1038 char[] s; | |
| 1039 s = "("; | |
| 1040 foreach (i, element; elements) | |
| 1041 { | |
| 1042 if (i) | |
| 1043 s ~= ','; | |
| 1044 s ~= element.toString(); | |
| 1045 } | |
| 1046 s ~= ")"; | |
| 1047 return s; | |
| 1048 } | |
| 1049 | |
| 1050 int opEquals(Object o) | |
| 1051 { | |
| 1052 if (this is o) | |
| 1053 return 1; | |
| 1054 | |
| 1055 auto t = cast(TypeInfo_Tuple)o; | |
| 1056 if (t && elements.length == t.elements.length) | |
| 1057 { | |
| 1058 for (size_t i = 0; i < elements.length; i++) | |
| 1059 { | |
| 1060 if (elements[i] != t.elements[i]) | |
| 1061 return 0; | |
| 1062 } | |
| 1063 return 1; | |
| 1064 } | |
| 1065 return 0; | |
| 1066 } | |
| 1067 | |
| 1068 hash_t getHash(void *p) | |
| 1069 { | |
| 1070 assert(0); | |
| 1071 } | |
| 1072 | |
| 1073 int equals(void *p1, void *p2) | |
| 1074 { | |
| 1075 assert(0); | |
| 1076 } | |
| 1077 | |
| 1078 int compare(void *p1, void *p2) | |
| 1079 { | |
| 1080 assert(0); | |
| 1081 } | |
| 1082 | |
| 1083 size_t tsize() | |
| 1084 { | |
| 1085 assert(0); | |
| 1086 } | |
| 1087 | |
| 1088 void swap(void *p1, void *p2) | |
| 1089 { | |
| 1090 assert(0); | |
| 1091 } | |
| 1092 } | |
| 52 | 1093 |
|
58
2c3cd3596187
[svn r62] Added support for TypeInfo _Array, _Function, _Pointer, _Delegate, _Enum
lindquist
parents:
54
diff
changeset
|
1094 +/ |
|
2c3cd3596187
[svn r62] Added support for TypeInfo _Array, _Function, _Pointer, _Delegate, _Enum
lindquist
parents:
54
diff
changeset
|
1095 |
| 52 | 1096 class TypeInfo_Const : TypeInfo |
| 1097 { | |
| 1098 char[] toString() { return "const " ~ base.toString(); } | |
| 1099 | |
| 1100 int opEquals(Object o) { return base.opEquals(o); } | |
| 1101 hash_t getHash(void *p) { return base.getHash(p); } | |
| 1102 int equals(void *p1, void *p2) { return base.equals(p1, p2); } | |
| 1103 int compare(void *p1, void *p2) { return base.compare(p1, p2); } | |
| 1104 size_t tsize() { return base.tsize(); } | |
| 1105 void swap(void *p1, void *p2) { return base.swap(p1, p2); } | |
| 1106 | |
| 1107 TypeInfo next() { return base.next(); } | |
| 1108 uint flags() { return base.flags(); } | |
| 1109 void[] init() { return base.init(); } | |
| 1110 | |
| 1111 TypeInfo base; | |
| 1112 } | |
| 1113 | |
| 1114 class TypeInfo_Invariant : TypeInfo_Const | |
| 1115 { | |
| 1116 char[] toString() { return "invariant " ~ base.toString(); } | |
| 1117 } | |
| 1118 | |
| 1 | 1119 /** |
| 1120 * All recoverable exceptions should be derived from class Exception. | |
| 1121 */ | |
| 1122 class Exception : Object | |
| 1123 { | |
| 1124 char[] msg; | |
| 1125 | |
| 1126 /** | |
| 1127 * Constructor; msg is a descriptive message for the exception. | |
| 1128 */ | |
| 1129 this(char[] msg) | |
| 1130 { | |
| 1131 this.msg = msg; | |
| 1132 } | |
| 1133 | |
| 1134 char[] toString() { return msg; } | |
| 1135 } | |
| 1136 | |
| 1137 /** | |
| 1138 * All irrecoverable exceptions should be derived from class Error. | |
| 1139 */ | |
| 1140 class Error : Exception | |
| 1141 { | |
| 1142 Error next; | |
| 1143 | |
| 1144 /** | |
| 1145 * Constructor; msg is a descriptive message for the exception. | |
| 1146 */ | |
| 1147 this(char[] msg) | |
| 1148 { | |
| 1149 super(msg); | |
| 1150 } | |
| 1151 | |
| 1152 this(char[] msg, Error next) | |
| 1153 { | |
| 1154 super(msg); | |
| 1155 this.next = next; | |
| 1156 } | |
| 1157 } | |
| 1158 | |
| 1159 //extern (C) int nullext = 0; | |
| 52 | 1160 |