Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #include "src/factory.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/allocation-site-scopes.h" |
| 8 | #include "src/base/bits.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 9 | #include "src/bootstrapper.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 10 | #include "src/conversions.h" |
| 11 | #include "src/isolate-inl.h" |
| 12 | #include "src/macro-assembler.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
| 17 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 18 | // Calls the FUNCTION_CALL function and retries it up to three times |
| 19 | // to guarantee that any allocations performed during the call will |
| 20 | // succeed if there's enough memory. |
| 21 | // |
| 22 | // Warning: Do not use the identifiers __object__, __maybe_object__, |
| 23 | // __allocation__ or __scope__ in a call to this macro. |
| 24 | |
| 25 | #define RETURN_OBJECT_UNLESS_RETRY(ISOLATE, TYPE) \ |
| 26 | if (__allocation__.To(&__object__)) { \ |
| 27 | DCHECK(__object__ != (ISOLATE)->heap()->exception()); \ |
| 28 | return Handle<TYPE>(TYPE::cast(__object__), ISOLATE); \ |
| 29 | } |
| 30 | |
| 31 | #define CALL_HEAP_FUNCTION(ISOLATE, FUNCTION_CALL, TYPE) \ |
| 32 | do { \ |
| 33 | AllocationResult __allocation__ = FUNCTION_CALL; \ |
| 34 | Object* __object__ = NULL; \ |
| 35 | RETURN_OBJECT_UNLESS_RETRY(ISOLATE, TYPE) \ |
| 36 | /* Two GCs before panicking. In newspace will almost always succeed. */ \ |
| 37 | for (int __i__ = 0; __i__ < 2; __i__++) { \ |
| 38 | (ISOLATE)->heap()->CollectGarbage(__allocation__.RetrySpace(), \ |
| 39 | "allocation failure"); \ |
| 40 | __allocation__ = FUNCTION_CALL; \ |
| 41 | RETURN_OBJECT_UNLESS_RETRY(ISOLATE, TYPE) \ |
| 42 | } \ |
| 43 | (ISOLATE)->counters()->gc_last_resort_from_handles()->Increment(); \ |
| 44 | (ISOLATE)->heap()->CollectAllAvailableGarbage("last resort gc"); \ |
| 45 | { \ |
| 46 | AlwaysAllocateScope __scope__(ISOLATE); \ |
| 47 | __allocation__ = FUNCTION_CALL; \ |
| 48 | } \ |
| 49 | RETURN_OBJECT_UNLESS_RETRY(ISOLATE, TYPE) \ |
| 50 | /* TODO(1181417): Fix this. */ \ |
| 51 | v8::internal::Heap::FatalProcessOutOfMemory("CALL_AND_RETRY_LAST", true); \ |
| 52 | return Handle<TYPE>(); \ |
| 53 | } while (false) |
| 54 | |
| 55 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 56 | template<typename T> |
| 57 | Handle<T> Factory::New(Handle<Map> map, AllocationSpace space) { |
| 58 | CALL_HEAP_FUNCTION( |
| 59 | isolate(), |
| 60 | isolate()->heap()->Allocate(*map, space), |
| 61 | T); |
| 62 | } |
| 63 | |
| 64 | |
| 65 | template<typename T> |
| 66 | Handle<T> Factory::New(Handle<Map> map, |
| 67 | AllocationSpace space, |
| 68 | Handle<AllocationSite> allocation_site) { |
| 69 | CALL_HEAP_FUNCTION( |
| 70 | isolate(), |
| 71 | isolate()->heap()->Allocate(*map, space, *allocation_site), |
| 72 | T); |
| 73 | } |
| 74 | |
| 75 | |
| 76 | Handle<HeapObject> Factory::NewFillerObject(int size, |
| 77 | bool double_align, |
| 78 | AllocationSpace space) { |
| 79 | CALL_HEAP_FUNCTION( |
| 80 | isolate(), |
| 81 | isolate()->heap()->AllocateFillerObject(size, double_align, space), |
| 82 | HeapObject); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | Handle<Box> Factory::NewBox(Handle<Object> value) { |
| 87 | Handle<Box> result = Handle<Box>::cast(NewStruct(BOX_TYPE)); |
| 88 | result->set_value(*value); |
| 89 | return result; |
| 90 | } |
| 91 | |
| 92 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 93 | Handle<PrototypeInfo> Factory::NewPrototypeInfo() { |
| 94 | Handle<PrototypeInfo> result = |
| 95 | Handle<PrototypeInfo>::cast(NewStruct(PROTOTYPE_INFO_TYPE)); |
| 96 | result->set_prototype_users(WeakFixedArray::Empty()); |
| 97 | result->set_registry_slot(PrototypeInfo::UNREGISTERED); |
| 98 | result->set_validity_cell(Smi::FromInt(0)); |
| 99 | return result; |
| 100 | } |
| 101 | |
| 102 | |
| 103 | Handle<SloppyBlockWithEvalContextExtension> |
| 104 | Factory::NewSloppyBlockWithEvalContextExtension( |
| 105 | Handle<ScopeInfo> scope_info, Handle<JSObject> extension) { |
| 106 | DCHECK(scope_info->is_declaration_scope()); |
| 107 | Handle<SloppyBlockWithEvalContextExtension> result = |
| 108 | Handle<SloppyBlockWithEvalContextExtension>::cast( |
| 109 | NewStruct(SLOPPY_BLOCK_WITH_EVAL_CONTEXT_EXTENSION_TYPE)); |
| 110 | result->set_scope_info(*scope_info); |
| 111 | result->set_extension(*extension); |
| 112 | return result; |
| 113 | } |
| 114 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 115 | Handle<Oddball> Factory::NewOddball(Handle<Map> map, const char* to_string, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 116 | Handle<Object> to_number, bool to_boolean, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 117 | const char* type_of, byte kind) { |
| 118 | Handle<Oddball> oddball = New<Oddball>(map, OLD_SPACE); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 119 | Oddball::Initialize(isolate(), oddball, to_string, to_number, to_boolean, |
| 120 | type_of, kind); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 121 | return oddball; |
| 122 | } |
| 123 | |
| 124 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 125 | Handle<FixedArray> Factory::NewFixedArray(int size, PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 126 | DCHECK(0 <= size); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 127 | CALL_HEAP_FUNCTION( |
| 128 | isolate(), |
| 129 | isolate()->heap()->AllocateFixedArray(size, pretenure), |
| 130 | FixedArray); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 134 | Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size, |
| 135 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 136 | DCHECK(0 <= size); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 137 | CALL_HEAP_FUNCTION( |
| 138 | isolate(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 139 | isolate()->heap()->AllocateFixedArrayWithFiller(size, |
| 140 | pretenure, |
| 141 | *the_hole_value()), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 142 | FixedArray); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 146 | Handle<FixedArray> Factory::NewUninitializedFixedArray(int size) { |
| 147 | CALL_HEAP_FUNCTION( |
| 148 | isolate(), |
| 149 | isolate()->heap()->AllocateUninitializedFixedArray(size), |
| 150 | FixedArray); |
| 151 | } |
| 152 | |
| 153 | |
| 154 | Handle<FixedArrayBase> Factory::NewFixedDoubleArray(int size, |
| 155 | PretenureFlag pretenure) { |
| 156 | DCHECK(0 <= size); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 157 | CALL_HEAP_FUNCTION( |
| 158 | isolate(), |
| 159 | isolate()->heap()->AllocateUninitializedFixedDoubleArray(size, pretenure), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 160 | FixedArrayBase); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 164 | Handle<FixedArrayBase> Factory::NewFixedDoubleArrayWithHoles( |
| 165 | int size, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 166 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 167 | DCHECK(0 <= size); |
| 168 | Handle<FixedArrayBase> array = NewFixedDoubleArray(size, pretenure); |
| 169 | if (size > 0) { |
| 170 | Handle<FixedDoubleArray> double_array = |
| 171 | Handle<FixedDoubleArray>::cast(array); |
| 172 | for (int i = 0; i < size; ++i) { |
| 173 | double_array->set_the_hole(i); |
| 174 | } |
| 175 | } |
| 176 | return array; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 180 | Handle<OrderedHashSet> Factory::NewOrderedHashSet() { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 181 | return OrderedHashSet::Allocate(isolate(), OrderedHashSet::kMinCapacity); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | |
| 185 | Handle<OrderedHashMap> Factory::NewOrderedHashMap() { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 186 | return OrderedHashMap::Allocate(isolate(), OrderedHashMap::kMinCapacity); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 190 | Handle<AccessorPair> Factory::NewAccessorPair() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 191 | Handle<AccessorPair> accessors = |
| 192 | Handle<AccessorPair>::cast(NewStruct(ACCESSOR_PAIR_TYPE)); |
| 193 | accessors->set_getter(*the_hole_value(), SKIP_WRITE_BARRIER); |
| 194 | accessors->set_setter(*the_hole_value(), SKIP_WRITE_BARRIER); |
| 195 | return accessors; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | |
| 199 | Handle<TypeFeedbackInfo> Factory::NewTypeFeedbackInfo() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 200 | Handle<TypeFeedbackInfo> info = |
| 201 | Handle<TypeFeedbackInfo>::cast(NewStruct(TYPE_FEEDBACK_INFO_TYPE)); |
| 202 | info->initialize_storage(); |
| 203 | return info; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 207 | // Internalized strings are created in the old generation (data space). |
| 208 | Handle<String> Factory::InternalizeUtf8String(Vector<const char> string) { |
| 209 | Utf8StringKey key(string, isolate()->heap()->HashSeed()); |
| 210 | return InternalizeStringWithKey(&key); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 211 | } |
| 212 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 213 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 214 | Handle<String> Factory::InternalizeOneByteString(Vector<const uint8_t> string) { |
| 215 | OneByteStringKey key(string, isolate()->heap()->HashSeed()); |
| 216 | return InternalizeStringWithKey(&key); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 217 | } |
| 218 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 219 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 220 | Handle<String> Factory::InternalizeOneByteString( |
| 221 | Handle<SeqOneByteString> string, int from, int length) { |
| 222 | SeqOneByteSubStringKey key(string, from, length); |
| 223 | return InternalizeStringWithKey(&key); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 227 | Handle<String> Factory::InternalizeTwoByteString(Vector<const uc16> string) { |
| 228 | TwoByteStringKey key(string, isolate()->heap()->HashSeed()); |
| 229 | return InternalizeStringWithKey(&key); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 233 | template<class StringTableKey> |
| 234 | Handle<String> Factory::InternalizeStringWithKey(StringTableKey* key) { |
| 235 | return StringTable::LookupKey(isolate(), key); |
| 236 | } |
| 237 | |
| 238 | |
| 239 | MaybeHandle<String> Factory::NewStringFromOneByte(Vector<const uint8_t> string, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 240 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 241 | int length = string.length(); |
| 242 | if (length == 1) return LookupSingleCharacterStringFromCode(string[0]); |
| 243 | Handle<SeqOneByteString> result; |
| 244 | ASSIGN_RETURN_ON_EXCEPTION( |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 245 | isolate(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 246 | result, |
| 247 | NewRawOneByteString(string.length(), pretenure), |
| 248 | String); |
| 249 | |
| 250 | DisallowHeapAllocation no_gc; |
| 251 | // Copy the characters into the new object. |
| 252 | CopyChars(SeqOneByteString::cast(*result)->GetChars(), |
| 253 | string.start(), |
| 254 | length); |
| 255 | return result; |
| 256 | } |
| 257 | |
| 258 | MaybeHandle<String> Factory::NewStringFromUtf8(Vector<const char> string, |
| 259 | PretenureFlag pretenure) { |
| 260 | // Check for ASCII first since this is the common case. |
| 261 | const char* start = string.start(); |
| 262 | int length = string.length(); |
| 263 | int non_ascii_start = String::NonAsciiStart(start, length); |
| 264 | if (non_ascii_start >= length) { |
| 265 | // If the string is ASCII, we do not need to convert the characters |
| 266 | // since UTF8 is backwards compatible with ASCII. |
| 267 | return NewStringFromOneByte(Vector<const uint8_t>::cast(string), pretenure); |
| 268 | } |
| 269 | |
| 270 | // Non-ASCII and we need to decode. |
| 271 | Access<UnicodeCache::Utf8Decoder> |
| 272 | decoder(isolate()->unicode_cache()->utf8_decoder()); |
| 273 | decoder->Reset(string.start() + non_ascii_start, |
| 274 | length - non_ascii_start); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 275 | int utf16_length = static_cast<int>(decoder->Utf16Length()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 276 | DCHECK(utf16_length > 0); |
| 277 | // Allocate string. |
| 278 | Handle<SeqTwoByteString> result; |
| 279 | ASSIGN_RETURN_ON_EXCEPTION( |
| 280 | isolate(), result, |
| 281 | NewRawTwoByteString(non_ascii_start + utf16_length, pretenure), |
| 282 | String); |
| 283 | // Copy ASCII portion. |
| 284 | uint16_t* data = result->GetChars(); |
| 285 | const char* ascii_data = string.start(); |
| 286 | for (int i = 0; i < non_ascii_start; i++) { |
| 287 | *data++ = *ascii_data++; |
| 288 | } |
| 289 | // Now write the remainder. |
| 290 | decoder->WriteUtf16(data, utf16_length); |
| 291 | return result; |
Leon Clarke | ac95265 | 2010-07-15 11:15:24 +0100 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 295 | MaybeHandle<String> Factory::NewStringFromTwoByte(Vector<const uc16> string, |
| 296 | PretenureFlag pretenure) { |
| 297 | int length = string.length(); |
| 298 | const uc16* start = string.start(); |
| 299 | if (String::IsOneByte(start, length)) { |
| 300 | if (length == 1) return LookupSingleCharacterStringFromCode(string[0]); |
| 301 | Handle<SeqOneByteString> result; |
| 302 | ASSIGN_RETURN_ON_EXCEPTION( |
| 303 | isolate(), |
| 304 | result, |
| 305 | NewRawOneByteString(length, pretenure), |
| 306 | String); |
| 307 | CopyChars(result->GetChars(), start, length); |
| 308 | return result; |
| 309 | } else { |
| 310 | Handle<SeqTwoByteString> result; |
| 311 | ASSIGN_RETURN_ON_EXCEPTION( |
| 312 | isolate(), |
| 313 | result, |
| 314 | NewRawTwoByteString(length, pretenure), |
| 315 | String); |
| 316 | CopyChars(result->GetChars(), start, length); |
| 317 | return result; |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | |
| 322 | Handle<String> Factory::NewInternalizedStringFromUtf8(Vector<const char> str, |
| 323 | int chars, |
| 324 | uint32_t hash_field) { |
| 325 | CALL_HEAP_FUNCTION( |
| 326 | isolate(), |
| 327 | isolate()->heap()->AllocateInternalizedStringFromUtf8( |
| 328 | str, chars, hash_field), |
| 329 | String); |
| 330 | } |
| 331 | |
| 332 | |
| 333 | MUST_USE_RESULT Handle<String> Factory::NewOneByteInternalizedString( |
| 334 | Vector<const uint8_t> str, |
| 335 | uint32_t hash_field) { |
| 336 | CALL_HEAP_FUNCTION( |
| 337 | isolate(), |
| 338 | isolate()->heap()->AllocateOneByteInternalizedString(str, hash_field), |
| 339 | String); |
| 340 | } |
| 341 | |
| 342 | |
| 343 | MUST_USE_RESULT Handle<String> Factory::NewOneByteInternalizedSubString( |
| 344 | Handle<SeqOneByteString> string, int offset, int length, |
| 345 | uint32_t hash_field) { |
| 346 | CALL_HEAP_FUNCTION( |
| 347 | isolate(), isolate()->heap()->AllocateOneByteInternalizedString( |
| 348 | Vector<const uint8_t>(string->GetChars() + offset, length), |
| 349 | hash_field), |
| 350 | String); |
| 351 | } |
| 352 | |
| 353 | |
| 354 | MUST_USE_RESULT Handle<String> Factory::NewTwoByteInternalizedString( |
| 355 | Vector<const uc16> str, |
| 356 | uint32_t hash_field) { |
| 357 | CALL_HEAP_FUNCTION( |
| 358 | isolate(), |
| 359 | isolate()->heap()->AllocateTwoByteInternalizedString(str, hash_field), |
| 360 | String); |
| 361 | } |
| 362 | |
| 363 | |
| 364 | Handle<String> Factory::NewInternalizedStringImpl( |
| 365 | Handle<String> string, int chars, uint32_t hash_field) { |
| 366 | CALL_HEAP_FUNCTION( |
| 367 | isolate(), |
| 368 | isolate()->heap()->AllocateInternalizedStringImpl( |
| 369 | *string, chars, hash_field), |
| 370 | String); |
| 371 | } |
| 372 | |
| 373 | |
| 374 | MaybeHandle<Map> Factory::InternalizedStringMapForString( |
| 375 | Handle<String> string) { |
| 376 | // If the string is in new space it cannot be used as internalized. |
| 377 | if (isolate()->heap()->InNewSpace(*string)) return MaybeHandle<Map>(); |
| 378 | |
| 379 | // Find the corresponding internalized string map for strings. |
| 380 | switch (string->map()->instance_type()) { |
| 381 | case STRING_TYPE: return internalized_string_map(); |
| 382 | case ONE_BYTE_STRING_TYPE: |
| 383 | return one_byte_internalized_string_map(); |
| 384 | case EXTERNAL_STRING_TYPE: return external_internalized_string_map(); |
| 385 | case EXTERNAL_ONE_BYTE_STRING_TYPE: |
| 386 | return external_one_byte_internalized_string_map(); |
| 387 | case EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE: |
| 388 | return external_internalized_string_with_one_byte_data_map(); |
| 389 | case SHORT_EXTERNAL_STRING_TYPE: |
| 390 | return short_external_internalized_string_map(); |
| 391 | case SHORT_EXTERNAL_ONE_BYTE_STRING_TYPE: |
| 392 | return short_external_one_byte_internalized_string_map(); |
| 393 | case SHORT_EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE: |
| 394 | return short_external_internalized_string_with_one_byte_data_map(); |
| 395 | default: return MaybeHandle<Map>(); // No match found. |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | |
| 400 | MaybeHandle<SeqOneByteString> Factory::NewRawOneByteString( |
| 401 | int length, PretenureFlag pretenure) { |
| 402 | if (length > String::kMaxLength || length < 0) { |
| 403 | THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), SeqOneByteString); |
| 404 | } |
| 405 | CALL_HEAP_FUNCTION( |
| 406 | isolate(), |
| 407 | isolate()->heap()->AllocateRawOneByteString(length, pretenure), |
| 408 | SeqOneByteString); |
| 409 | } |
| 410 | |
| 411 | |
| 412 | MaybeHandle<SeqTwoByteString> Factory::NewRawTwoByteString( |
| 413 | int length, PretenureFlag pretenure) { |
| 414 | if (length > String::kMaxLength || length < 0) { |
| 415 | THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), SeqTwoByteString); |
| 416 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 417 | CALL_HEAP_FUNCTION( |
| 418 | isolate(), |
| 419 | isolate()->heap()->AllocateRawTwoByteString(length, pretenure), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 420 | SeqTwoByteString); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 421 | } |
| 422 | |
| 423 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 424 | Handle<String> Factory::LookupSingleCharacterStringFromCode(uint32_t code) { |
| 425 | if (code <= String::kMaxOneByteCharCodeU) { |
| 426 | { |
| 427 | DisallowHeapAllocation no_allocation; |
| 428 | Object* value = single_character_string_cache()->get(code); |
| 429 | if (value != *undefined_value()) { |
| 430 | return handle(String::cast(value), isolate()); |
| 431 | } |
| 432 | } |
| 433 | uint8_t buffer[1]; |
| 434 | buffer[0] = static_cast<uint8_t>(code); |
| 435 | Handle<String> result = |
| 436 | InternalizeOneByteString(Vector<const uint8_t>(buffer, 1)); |
| 437 | single_character_string_cache()->set(code, *result); |
| 438 | return result; |
| 439 | } |
| 440 | DCHECK(code <= String::kMaxUtf16CodeUnitU); |
| 441 | |
| 442 | Handle<SeqTwoByteString> result = NewRawTwoByteString(1).ToHandleChecked(); |
| 443 | result->SeqTwoByteStringSet(0, static_cast<uint16_t>(code)); |
| 444 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 448 | // Returns true for a character in a range. Both limits are inclusive. |
| 449 | static inline bool Between(uint32_t character, uint32_t from, uint32_t to) { |
| 450 | // This makes uses of the the unsigned wraparound. |
| 451 | return character - from <= to - from; |
| 452 | } |
| 453 | |
| 454 | |
| 455 | static inline Handle<String> MakeOrFindTwoCharacterString(Isolate* isolate, |
| 456 | uint16_t c1, |
| 457 | uint16_t c2) { |
| 458 | // Numeric strings have a different hash algorithm not known by |
| 459 | // LookupTwoCharsStringIfExists, so we skip this step for such strings. |
| 460 | if (!Between(c1, '0', '9') || !Between(c2, '0', '9')) { |
| 461 | Handle<String> result; |
| 462 | if (StringTable::LookupTwoCharsStringIfExists(isolate, c1, c2). |
| 463 | ToHandle(&result)) { |
| 464 | return result; |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | // Now we know the length is 2, we might as well make use of that fact |
| 469 | // when building the new string. |
| 470 | if (static_cast<unsigned>(c1 | c2) <= String::kMaxOneByteCharCodeU) { |
| 471 | // We can do this. |
| 472 | DCHECK(base::bits::IsPowerOfTwo32(String::kMaxOneByteCharCodeU + |
| 473 | 1)); // because of this. |
| 474 | Handle<SeqOneByteString> str = |
| 475 | isolate->factory()->NewRawOneByteString(2).ToHandleChecked(); |
| 476 | uint8_t* dest = str->GetChars(); |
| 477 | dest[0] = static_cast<uint8_t>(c1); |
| 478 | dest[1] = static_cast<uint8_t>(c2); |
| 479 | return str; |
| 480 | } else { |
| 481 | Handle<SeqTwoByteString> str = |
| 482 | isolate->factory()->NewRawTwoByteString(2).ToHandleChecked(); |
| 483 | uc16* dest = str->GetChars(); |
| 484 | dest[0] = c1; |
| 485 | dest[1] = c2; |
| 486 | return str; |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | |
| 491 | template<typename SinkChar, typename StringType> |
| 492 | Handle<String> ConcatStringContent(Handle<StringType> result, |
| 493 | Handle<String> first, |
| 494 | Handle<String> second) { |
| 495 | DisallowHeapAllocation pointer_stays_valid; |
| 496 | SinkChar* sink = result->GetChars(); |
| 497 | String::WriteToFlat(*first, sink, 0, first->length()); |
| 498 | String::WriteToFlat(*second, sink + first->length(), 0, second->length()); |
| 499 | return result; |
| 500 | } |
| 501 | |
| 502 | |
| 503 | MaybeHandle<String> Factory::NewConsString(Handle<String> left, |
| 504 | Handle<String> right) { |
| 505 | int left_length = left->length(); |
| 506 | if (left_length == 0) return right; |
| 507 | int right_length = right->length(); |
| 508 | if (right_length == 0) return left; |
| 509 | |
| 510 | int length = left_length + right_length; |
| 511 | |
| 512 | if (length == 2) { |
| 513 | uint16_t c1 = left->Get(0); |
| 514 | uint16_t c2 = right->Get(0); |
| 515 | return MakeOrFindTwoCharacterString(isolate(), c1, c2); |
| 516 | } |
| 517 | |
| 518 | // Make sure that an out of memory exception is thrown if the length |
| 519 | // of the new cons string is too large. |
| 520 | if (length > String::kMaxLength || length < 0) { |
| 521 | THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), String); |
| 522 | } |
| 523 | |
| 524 | bool left_is_one_byte = left->IsOneByteRepresentation(); |
| 525 | bool right_is_one_byte = right->IsOneByteRepresentation(); |
| 526 | bool is_one_byte = left_is_one_byte && right_is_one_byte; |
| 527 | bool is_one_byte_data_in_two_byte_string = false; |
| 528 | if (!is_one_byte) { |
| 529 | // At least one of the strings uses two-byte representation so we |
| 530 | // can't use the fast case code for short one-byte strings below, but |
| 531 | // we can try to save memory if all chars actually fit in one-byte. |
| 532 | is_one_byte_data_in_two_byte_string = |
| 533 | left->HasOnlyOneByteChars() && right->HasOnlyOneByteChars(); |
| 534 | if (is_one_byte_data_in_two_byte_string) { |
| 535 | isolate()->counters()->string_add_runtime_ext_to_one_byte()->Increment(); |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | // If the resulting string is small make a flat string. |
| 540 | if (length < ConsString::kMinLength) { |
| 541 | // Note that neither of the two inputs can be a slice because: |
| 542 | STATIC_ASSERT(ConsString::kMinLength <= SlicedString::kMinLength); |
| 543 | DCHECK(left->IsFlat()); |
| 544 | DCHECK(right->IsFlat()); |
| 545 | |
| 546 | STATIC_ASSERT(ConsString::kMinLength <= String::kMaxLength); |
| 547 | if (is_one_byte) { |
| 548 | Handle<SeqOneByteString> result = |
| 549 | NewRawOneByteString(length).ToHandleChecked(); |
| 550 | DisallowHeapAllocation no_gc; |
| 551 | uint8_t* dest = result->GetChars(); |
| 552 | // Copy left part. |
| 553 | const uint8_t* src = |
| 554 | left->IsExternalString() |
| 555 | ? Handle<ExternalOneByteString>::cast(left)->GetChars() |
| 556 | : Handle<SeqOneByteString>::cast(left)->GetChars(); |
| 557 | for (int i = 0; i < left_length; i++) *dest++ = src[i]; |
| 558 | // Copy right part. |
| 559 | src = right->IsExternalString() |
| 560 | ? Handle<ExternalOneByteString>::cast(right)->GetChars() |
| 561 | : Handle<SeqOneByteString>::cast(right)->GetChars(); |
| 562 | for (int i = 0; i < right_length; i++) *dest++ = src[i]; |
| 563 | return result; |
| 564 | } |
| 565 | |
| 566 | return (is_one_byte_data_in_two_byte_string) |
| 567 | ? ConcatStringContent<uint8_t>( |
| 568 | NewRawOneByteString(length).ToHandleChecked(), left, right) |
| 569 | : ConcatStringContent<uc16>( |
| 570 | NewRawTwoByteString(length).ToHandleChecked(), left, right); |
| 571 | } |
| 572 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 573 | Handle<ConsString> result = |
| 574 | (is_one_byte || is_one_byte_data_in_two_byte_string) |
| 575 | ? New<ConsString>(cons_one_byte_string_map(), NEW_SPACE) |
| 576 | : New<ConsString>(cons_string_map(), NEW_SPACE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 577 | |
| 578 | DisallowHeapAllocation no_gc; |
| 579 | WriteBarrierMode mode = result->GetWriteBarrierMode(no_gc); |
| 580 | |
| 581 | result->set_hash_field(String::kEmptyHashField); |
| 582 | result->set_length(length); |
| 583 | result->set_first(*left, mode); |
| 584 | result->set_second(*right, mode); |
| 585 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 589 | Handle<String> Factory::NewProperSubString(Handle<String> str, |
| 590 | int begin, |
| 591 | int end) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 592 | #if VERIFY_HEAP |
| 593 | if (FLAG_verify_heap) str->StringVerify(); |
| 594 | #endif |
| 595 | DCHECK(begin > 0 || end < str->length()); |
| 596 | |
| 597 | str = String::Flatten(str); |
| 598 | |
| 599 | int length = end - begin; |
| 600 | if (length <= 0) return empty_string(); |
| 601 | if (length == 1) { |
| 602 | return LookupSingleCharacterStringFromCode(str->Get(begin)); |
| 603 | } |
| 604 | if (length == 2) { |
| 605 | // Optimization for 2-byte strings often used as keys in a decompression |
| 606 | // dictionary. Check whether we already have the string in the string |
| 607 | // table to prevent creation of many unnecessary strings. |
| 608 | uint16_t c1 = str->Get(begin); |
| 609 | uint16_t c2 = str->Get(begin + 1); |
| 610 | return MakeOrFindTwoCharacterString(isolate(), c1, c2); |
| 611 | } |
| 612 | |
| 613 | if (!FLAG_string_slices || length < SlicedString::kMinLength) { |
| 614 | if (str->IsOneByteRepresentation()) { |
| 615 | Handle<SeqOneByteString> result = |
| 616 | NewRawOneByteString(length).ToHandleChecked(); |
| 617 | uint8_t* dest = result->GetChars(); |
| 618 | DisallowHeapAllocation no_gc; |
| 619 | String::WriteToFlat(*str, dest, begin, end); |
| 620 | return result; |
| 621 | } else { |
| 622 | Handle<SeqTwoByteString> result = |
| 623 | NewRawTwoByteString(length).ToHandleChecked(); |
| 624 | uc16* dest = result->GetChars(); |
| 625 | DisallowHeapAllocation no_gc; |
| 626 | String::WriteToFlat(*str, dest, begin, end); |
| 627 | return result; |
| 628 | } |
| 629 | } |
| 630 | |
| 631 | int offset = begin; |
| 632 | |
| 633 | if (str->IsSlicedString()) { |
| 634 | Handle<SlicedString> slice = Handle<SlicedString>::cast(str); |
| 635 | str = Handle<String>(slice->parent(), isolate()); |
| 636 | offset += slice->offset(); |
| 637 | } |
| 638 | |
| 639 | DCHECK(str->IsSeqString() || str->IsExternalString()); |
| 640 | Handle<Map> map = str->IsOneByteRepresentation() |
| 641 | ? sliced_one_byte_string_map() |
| 642 | : sliced_string_map(); |
| 643 | Handle<SlicedString> slice = New<SlicedString>(map, NEW_SPACE); |
| 644 | |
| 645 | slice->set_hash_field(String::kEmptyHashField); |
| 646 | slice->set_length(length); |
| 647 | slice->set_parent(*str); |
| 648 | slice->set_offset(offset); |
| 649 | return slice; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 650 | } |
| 651 | |
| 652 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 653 | MaybeHandle<String> Factory::NewExternalStringFromOneByte( |
| 654 | const ExternalOneByteString::Resource* resource) { |
| 655 | size_t length = resource->length(); |
| 656 | if (length > static_cast<size_t>(String::kMaxLength)) { |
| 657 | THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), String); |
| 658 | } |
| 659 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 660 | Handle<Map> map; |
| 661 | if (resource->IsCompressible()) { |
| 662 | // TODO(hajimehoshi): Rename this to 'uncached_external_one_byte_string_map' |
| 663 | map = short_external_one_byte_string_map(); |
| 664 | } else { |
| 665 | map = external_one_byte_string_map(); |
| 666 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 667 | Handle<ExternalOneByteString> external_string = |
| 668 | New<ExternalOneByteString>(map, NEW_SPACE); |
| 669 | external_string->set_length(static_cast<int>(length)); |
| 670 | external_string->set_hash_field(String::kEmptyHashField); |
| 671 | external_string->set_resource(resource); |
| 672 | |
| 673 | return external_string; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 674 | } |
| 675 | |
| 676 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 677 | MaybeHandle<String> Factory::NewExternalStringFromTwoByte( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 678 | const ExternalTwoByteString::Resource* resource) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 679 | size_t length = resource->length(); |
| 680 | if (length > static_cast<size_t>(String::kMaxLength)) { |
| 681 | THROW_NEW_ERROR(isolate(), NewInvalidStringLengthError(), String); |
| 682 | } |
| 683 | |
| 684 | // For small strings we check whether the resource contains only |
| 685 | // one byte characters. If yes, we use a different string map. |
| 686 | static const size_t kOneByteCheckLengthLimit = 32; |
| 687 | bool is_one_byte = length <= kOneByteCheckLengthLimit && |
| 688 | String::IsOneByte(resource->data(), static_cast<int>(length)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 689 | Handle<Map> map; |
| 690 | if (resource->IsCompressible()) { |
| 691 | // TODO(hajimehoshi): Rename these to 'uncached_external_string_...'. |
| 692 | map = is_one_byte ? short_external_string_with_one_byte_data_map() |
| 693 | : short_external_string_map(); |
| 694 | } else { |
| 695 | map = is_one_byte ? external_string_with_one_byte_data_map() |
| 696 | : external_string_map(); |
| 697 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 698 | Handle<ExternalTwoByteString> external_string = |
| 699 | New<ExternalTwoByteString>(map, NEW_SPACE); |
| 700 | external_string->set_length(static_cast<int>(length)); |
| 701 | external_string->set_hash_field(String::kEmptyHashField); |
| 702 | external_string->set_resource(resource); |
| 703 | |
| 704 | return external_string; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 705 | } |
| 706 | |
| 707 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 708 | Handle<Symbol> Factory::NewSymbol() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 709 | CALL_HEAP_FUNCTION( |
| 710 | isolate(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 711 | isolate()->heap()->AllocateSymbol(), |
| 712 | Symbol); |
| 713 | } |
| 714 | |
| 715 | |
| 716 | Handle<Symbol> Factory::NewPrivateSymbol() { |
| 717 | Handle<Symbol> symbol = NewSymbol(); |
| 718 | symbol->set_is_private(true); |
| 719 | return symbol; |
| 720 | } |
| 721 | |
| 722 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 723 | Handle<Context> Factory::NewNativeContext() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 724 | Handle<FixedArray> array = |
| 725 | NewFixedArray(Context::NATIVE_CONTEXT_SLOTS, TENURED); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 726 | array->set_map_no_write_barrier(*native_context_map()); |
| 727 | Handle<Context> context = Handle<Context>::cast(array); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 728 | context->set_native_context(*context); |
| 729 | context->set_errors_thrown(Smi::FromInt(0)); |
| 730 | Handle<WeakCell> weak_cell = NewWeakCell(context); |
| 731 | context->set_self_weak_cell(*weak_cell); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 732 | DCHECK(context->IsNativeContext()); |
| 733 | return context; |
| 734 | } |
| 735 | |
| 736 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 737 | Handle<Context> Factory::NewScriptContext(Handle<JSFunction> function, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 738 | Handle<ScopeInfo> scope_info) { |
| 739 | Handle<FixedArray> array = |
| 740 | NewFixedArray(scope_info->ContextLength(), TENURED); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 741 | array->set_map_no_write_barrier(*script_context_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 742 | Handle<Context> context = Handle<Context>::cast(array); |
| 743 | context->set_closure(*function); |
| 744 | context->set_previous(function->context()); |
| 745 | context->set_extension(*scope_info); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 746 | context->set_native_context(function->native_context()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 747 | DCHECK(context->IsScriptContext()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 748 | return context; |
| 749 | } |
| 750 | |
| 751 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 752 | Handle<ScriptContextTable> Factory::NewScriptContextTable() { |
| 753 | Handle<FixedArray> array = NewFixedArray(1); |
| 754 | array->set_map_no_write_barrier(*script_context_table_map()); |
| 755 | Handle<ScriptContextTable> context_table = |
| 756 | Handle<ScriptContextTable>::cast(array); |
| 757 | context_table->set_used(0); |
| 758 | return context_table; |
| 759 | } |
| 760 | |
| 761 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 762 | Handle<Context> Factory::NewModuleContext(Handle<ScopeInfo> scope_info) { |
| 763 | Handle<FixedArray> array = |
| 764 | NewFixedArray(scope_info->ContextLength(), TENURED); |
| 765 | array->set_map_no_write_barrier(*module_context_map()); |
| 766 | // Instance link will be set later. |
| 767 | Handle<Context> context = Handle<Context>::cast(array); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 768 | context->set_extension(*the_hole_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 769 | return context; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | |
| 773 | Handle<Context> Factory::NewFunctionContext(int length, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 774 | Handle<JSFunction> function) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 775 | DCHECK(length >= Context::MIN_CONTEXT_SLOTS); |
| 776 | Handle<FixedArray> array = NewFixedArray(length); |
| 777 | array->set_map_no_write_barrier(*function_context_map()); |
| 778 | Handle<Context> context = Handle<Context>::cast(array); |
| 779 | context->set_closure(*function); |
| 780 | context->set_previous(function->context()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 781 | context->set_extension(*the_hole_value()); |
| 782 | context->set_native_context(function->native_context()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 783 | return context; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 784 | } |
| 785 | |
| 786 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 787 | Handle<Context> Factory::NewCatchContext(Handle<JSFunction> function, |
| 788 | Handle<Context> previous, |
| 789 | Handle<String> name, |
| 790 | Handle<Object> thrown_object) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 791 | STATIC_ASSERT(Context::MIN_CONTEXT_SLOTS == Context::THROWN_OBJECT_INDEX); |
| 792 | Handle<FixedArray> array = NewFixedArray(Context::MIN_CONTEXT_SLOTS + 1); |
| 793 | array->set_map_no_write_barrier(*catch_context_map()); |
| 794 | Handle<Context> context = Handle<Context>::cast(array); |
| 795 | context->set_closure(*function); |
| 796 | context->set_previous(*previous); |
| 797 | context->set_extension(*name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 798 | context->set_native_context(previous->native_context()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 799 | context->set(Context::THROWN_OBJECT_INDEX, *thrown_object); |
| 800 | return context; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 801 | } |
| 802 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 803 | Handle<Context> Factory::NewDebugEvaluateContext(Handle<Context> previous, |
| 804 | Handle<JSReceiver> extension, |
| 805 | Handle<Context> wrapped, |
| 806 | Handle<StringSet> whitelist) { |
| 807 | STATIC_ASSERT(Context::WHITE_LIST_INDEX == Context::MIN_CONTEXT_SLOTS + 1); |
| 808 | Handle<FixedArray> array = NewFixedArray(Context::MIN_CONTEXT_SLOTS + 2); |
| 809 | array->set_map_no_write_barrier(*debug_evaluate_context_map()); |
| 810 | Handle<Context> c = Handle<Context>::cast(array); |
| 811 | c->set_closure(wrapped.is_null() ? previous->closure() : wrapped->closure()); |
| 812 | c->set_previous(*previous); |
| 813 | c->set_native_context(previous->native_context()); |
| 814 | if (!extension.is_null()) c->set(Context::EXTENSION_INDEX, *extension); |
| 815 | if (!wrapped.is_null()) c->set(Context::WRAPPED_CONTEXT_INDEX, *wrapped); |
| 816 | if (!whitelist.is_null()) c->set(Context::WHITE_LIST_INDEX, *whitelist); |
| 817 | return c; |
| 818 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 819 | |
| 820 | Handle<Context> Factory::NewWithContext(Handle<JSFunction> function, |
| 821 | Handle<Context> previous, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 822 | Handle<JSReceiver> extension) { |
| 823 | Handle<FixedArray> array = NewFixedArray(Context::MIN_CONTEXT_SLOTS); |
| 824 | array->set_map_no_write_barrier(*with_context_map()); |
| 825 | Handle<Context> context = Handle<Context>::cast(array); |
| 826 | context->set_closure(*function); |
| 827 | context->set_previous(*previous); |
| 828 | context->set_extension(*extension); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 829 | context->set_native_context(previous->native_context()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 830 | return context; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 831 | } |
| 832 | |
| 833 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 834 | Handle<Context> Factory::NewBlockContext(Handle<JSFunction> function, |
| 835 | Handle<Context> previous, |
| 836 | Handle<ScopeInfo> scope_info) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 837 | Handle<FixedArray> array = NewFixedArray(scope_info->ContextLength()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 838 | array->set_map_no_write_barrier(*block_context_map()); |
| 839 | Handle<Context> context = Handle<Context>::cast(array); |
| 840 | context->set_closure(*function); |
| 841 | context->set_previous(*previous); |
| 842 | context->set_extension(*scope_info); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 843 | context->set_native_context(previous->native_context()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 844 | return context; |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 848 | Handle<Struct> Factory::NewStruct(InstanceType type) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 849 | CALL_HEAP_FUNCTION( |
| 850 | isolate(), |
| 851 | isolate()->heap()->AllocateStruct(type), |
| 852 | Struct); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 856 | Handle<CodeCache> Factory::NewCodeCache() { |
| 857 | Handle<CodeCache> code_cache = |
| 858 | Handle<CodeCache>::cast(NewStruct(CODE_CACHE_TYPE)); |
| 859 | code_cache->set_default_cache(*empty_fixed_array(), SKIP_WRITE_BARRIER); |
| 860 | code_cache->set_normal_type_cache(*undefined_value(), SKIP_WRITE_BARRIER); |
| 861 | return code_cache; |
| 862 | } |
| 863 | |
| 864 | |
| 865 | Handle<AliasedArgumentsEntry> Factory::NewAliasedArgumentsEntry( |
| 866 | int aliased_context_slot) { |
| 867 | Handle<AliasedArgumentsEntry> entry = Handle<AliasedArgumentsEntry>::cast( |
| 868 | NewStruct(ALIASED_ARGUMENTS_ENTRY_TYPE)); |
| 869 | entry->set_aliased_context_slot(aliased_context_slot); |
| 870 | return entry; |
| 871 | } |
| 872 | |
| 873 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 874 | Handle<AccessorInfo> Factory::NewAccessorInfo() { |
| 875 | Handle<AccessorInfo> info = |
| 876 | Handle<AccessorInfo>::cast(NewStruct(ACCESSOR_INFO_TYPE)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 877 | info->set_flag(0); // Must clear the flag, it was initialized as undefined. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 878 | info->set_is_sloppy(true); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 879 | return info; |
| 880 | } |
| 881 | |
| 882 | |
| 883 | Handle<Script> Factory::NewScript(Handle<String> source) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 884 | // Create and initialize script object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 885 | Heap* heap = isolate()->heap(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 886 | Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE)); |
| 887 | script->set_source(*source); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 888 | script->set_name(heap->undefined_value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 889 | script->set_id(isolate()->heap()->NextScriptId()); |
| 890 | script->set_line_offset(0); |
| 891 | script->set_column_offset(0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 892 | script->set_context_data(heap->undefined_value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 893 | script->set_type(Script::TYPE_NORMAL); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 894 | script->set_wrapper(heap->undefined_value()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 895 | script->set_line_ends(heap->undefined_value()); |
| 896 | script->set_eval_from_shared(heap->undefined_value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 897 | script->set_eval_from_instructions_offset(0); |
| 898 | script->set_shared_function_infos(Smi::FromInt(0)); |
| 899 | script->set_flags(0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 900 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 901 | heap->set_script_list(*WeakFixedArray::Add(script_list(), script)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 902 | return script; |
| 903 | } |
| 904 | |
| 905 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 906 | Handle<Foreign> Factory::NewForeign(Address addr, PretenureFlag pretenure) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 907 | CALL_HEAP_FUNCTION(isolate(), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 908 | isolate()->heap()->AllocateForeign(addr, pretenure), |
| 909 | Foreign); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 910 | } |
| 911 | |
| 912 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 913 | Handle<Foreign> Factory::NewForeign(const AccessorDescriptor* desc) { |
| 914 | return NewForeign((Address) desc, TENURED); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 915 | } |
| 916 | |
| 917 | |
| 918 | Handle<ByteArray> Factory::NewByteArray(int length, PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 919 | DCHECK(0 <= length); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 920 | CALL_HEAP_FUNCTION( |
| 921 | isolate(), |
| 922 | isolate()->heap()->AllocateByteArray(length, pretenure), |
| 923 | ByteArray); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 924 | } |
| 925 | |
| 926 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 927 | Handle<BytecodeArray> Factory::NewBytecodeArray( |
| 928 | int length, const byte* raw_bytecodes, int frame_size, int parameter_count, |
| 929 | Handle<FixedArray> constant_pool) { |
| 930 | DCHECK(0 <= length); |
| 931 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateBytecodeArray( |
| 932 | length, raw_bytecodes, frame_size, |
| 933 | parameter_count, *constant_pool), |
| 934 | BytecodeArray); |
| 935 | } |
| 936 | |
| 937 | |
| 938 | Handle<FixedTypedArrayBase> Factory::NewFixedTypedArrayWithExternalPointer( |
| 939 | int length, ExternalArrayType array_type, void* external_pointer, |
| 940 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 941 | DCHECK(0 <= length && length <= Smi::kMaxValue); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 942 | CALL_HEAP_FUNCTION( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 943 | isolate(), isolate()->heap()->AllocateFixedTypedArrayWithExternalPointer( |
| 944 | length, array_type, external_pointer, pretenure), |
| 945 | FixedTypedArrayBase); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 949 | Handle<FixedTypedArrayBase> Factory::NewFixedTypedArray( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 950 | int length, ExternalArrayType array_type, bool initialize, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 951 | PretenureFlag pretenure) { |
| 952 | DCHECK(0 <= length && length <= Smi::kMaxValue); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 953 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateFixedTypedArray( |
| 954 | length, array_type, initialize, pretenure), |
| 955 | FixedTypedArrayBase); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | |
| 959 | Handle<Cell> Factory::NewCell(Handle<Object> value) { |
| 960 | AllowDeferredHandleDereference convert_to_cell; |
| 961 | CALL_HEAP_FUNCTION( |
| 962 | isolate(), |
| 963 | isolate()->heap()->AllocateCell(*value), |
| 964 | Cell); |
| 965 | } |
| 966 | |
| 967 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 968 | Handle<PropertyCell> Factory::NewPropertyCell() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 969 | CALL_HEAP_FUNCTION( |
| 970 | isolate(), |
| 971 | isolate()->heap()->AllocatePropertyCell(), |
| 972 | PropertyCell); |
| 973 | } |
| 974 | |
| 975 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 976 | Handle<WeakCell> Factory::NewWeakCell(Handle<HeapObject> value) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 977 | // It is safe to dereference the value because we are embedding it |
| 978 | // in cell and not inspecting its fields. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 979 | AllowDeferredHandleDereference convert_to_cell; |
| 980 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateWeakCell(*value), |
| 981 | WeakCell); |
| 982 | } |
| 983 | |
| 984 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 985 | Handle<TransitionArray> Factory::NewTransitionArray(int capacity) { |
| 986 | CALL_HEAP_FUNCTION(isolate(), |
| 987 | isolate()->heap()->AllocateTransitionArray(capacity), |
| 988 | TransitionArray); |
| 989 | } |
| 990 | |
| 991 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 992 | Handle<AllocationSite> Factory::NewAllocationSite() { |
| 993 | Handle<Map> map = allocation_site_map(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 994 | Handle<AllocationSite> site = New<AllocationSite>(map, OLD_SPACE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 995 | site->Initialize(); |
| 996 | |
| 997 | // Link the site |
| 998 | site->set_weak_next(isolate()->heap()->allocation_sites_list()); |
| 999 | isolate()->heap()->set_allocation_sites_list(*site); |
| 1000 | return site; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1001 | } |
| 1002 | |
| 1003 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1004 | Handle<Map> Factory::NewMap(InstanceType type, |
| 1005 | int instance_size, |
| 1006 | ElementsKind elements_kind) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1007 | CALL_HEAP_FUNCTION( |
| 1008 | isolate(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1009 | isolate()->heap()->AllocateMap(type, instance_size, elements_kind), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1010 | Map); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1014 | Handle<JSObject> Factory::CopyJSObject(Handle<JSObject> object) { |
| 1015 | CALL_HEAP_FUNCTION(isolate(), |
| 1016 | isolate()->heap()->CopyJSObject(*object, NULL), |
| 1017 | JSObject); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1018 | } |
| 1019 | |
| 1020 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1021 | Handle<JSObject> Factory::CopyJSObjectWithAllocationSite( |
| 1022 | Handle<JSObject> object, |
| 1023 | Handle<AllocationSite> site) { |
| 1024 | CALL_HEAP_FUNCTION(isolate(), |
| 1025 | isolate()->heap()->CopyJSObject( |
| 1026 | *object, |
| 1027 | site.is_null() ? NULL : *site), |
| 1028 | JSObject); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1029 | } |
| 1030 | |
| 1031 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1032 | Handle<FixedArray> Factory::CopyFixedArrayWithMap(Handle<FixedArray> array, |
| 1033 | Handle<Map> map) { |
| 1034 | CALL_HEAP_FUNCTION(isolate(), |
| 1035 | isolate()->heap()->CopyFixedArrayWithMap(*array, *map), |
| 1036 | FixedArray); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1040 | Handle<FixedArray> Factory::CopyFixedArrayAndGrow(Handle<FixedArray> array, |
| 1041 | int grow_by, |
| 1042 | PretenureFlag pretenure) { |
| 1043 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->CopyFixedArrayAndGrow( |
| 1044 | *array, grow_by, pretenure), |
| 1045 | FixedArray); |
| 1046 | } |
| 1047 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1048 | Handle<FixedArray> Factory::CopyFixedArrayUpTo(Handle<FixedArray> array, |
| 1049 | int new_len, |
| 1050 | PretenureFlag pretenure) { |
| 1051 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->CopyFixedArrayUpTo( |
| 1052 | *array, new_len, pretenure), |
| 1053 | FixedArray); |
| 1054 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1055 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1056 | Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1057 | CALL_HEAP_FUNCTION(isolate(), |
| 1058 | isolate()->heap()->CopyFixedArray(*array), |
| 1059 | FixedArray); |
| 1060 | } |
| 1061 | |
| 1062 | |
| 1063 | Handle<FixedArray> Factory::CopyAndTenureFixedCOWArray( |
| 1064 | Handle<FixedArray> array) { |
| 1065 | DCHECK(isolate()->heap()->InNewSpace(*array)); |
| 1066 | CALL_HEAP_FUNCTION(isolate(), |
| 1067 | isolate()->heap()->CopyAndTenureFixedCOWArray(*array), |
| 1068 | FixedArray); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1069 | } |
| 1070 | |
| 1071 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1072 | Handle<FixedDoubleArray> Factory::CopyFixedDoubleArray( |
| 1073 | Handle<FixedDoubleArray> array) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1074 | CALL_HEAP_FUNCTION(isolate(), |
| 1075 | isolate()->heap()->CopyFixedDoubleArray(*array), |
| 1076 | FixedDoubleArray); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1077 | } |
| 1078 | |
| 1079 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1080 | Handle<Object> Factory::NewNumber(double value, |
| 1081 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1082 | // We need to distinguish the minus zero value and this cannot be |
| 1083 | // done after conversion to int. Doing this by comparing bit |
| 1084 | // patterns is faster than using fpclassify() et al. |
| 1085 | if (IsMinusZero(value)) return NewHeapNumber(-0.0, IMMUTABLE, pretenure); |
| 1086 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1087 | int int_value = FastD2IChecked(value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1088 | if (value == int_value && Smi::IsValid(int_value)) { |
| 1089 | return handle(Smi::FromInt(int_value), isolate()); |
| 1090 | } |
| 1091 | |
| 1092 | // Materialize the value in the heap. |
| 1093 | return NewHeapNumber(value, IMMUTABLE, pretenure); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1094 | } |
| 1095 | |
| 1096 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1097 | Handle<Object> Factory::NewNumberFromInt(int32_t value, |
| 1098 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1099 | if (Smi::IsValid(value)) return handle(Smi::FromInt(value), isolate()); |
| 1100 | // Bypass NewNumber to avoid various redundant checks. |
| 1101 | return NewHeapNumber(FastI2D(value), IMMUTABLE, pretenure); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1102 | } |
| 1103 | |
| 1104 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1105 | Handle<Object> Factory::NewNumberFromUint(uint32_t value, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1106 | PretenureFlag pretenure) { |
| 1107 | int32_t int32v = static_cast<int32_t>(value); |
| 1108 | if (int32v >= 0 && Smi::IsValid(int32v)) { |
| 1109 | return handle(Smi::FromInt(int32v), isolate()); |
| 1110 | } |
| 1111 | return NewHeapNumber(FastUI2D(value), IMMUTABLE, pretenure); |
| 1112 | } |
| 1113 | |
| 1114 | |
| 1115 | Handle<HeapNumber> Factory::NewHeapNumber(double value, |
| 1116 | MutableMode mode, |
| 1117 | PretenureFlag pretenure) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1118 | CALL_HEAP_FUNCTION( |
| 1119 | isolate(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1120 | isolate()->heap()->AllocateHeapNumber(value, mode, pretenure), |
| 1121 | HeapNumber); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1125 | #define SIMD128_NEW_DEF(TYPE, Type, type, lane_count, lane_type) \ |
| 1126 | Handle<Type> Factory::New##Type(lane_type lanes[lane_count], \ |
| 1127 | PretenureFlag pretenure) { \ |
| 1128 | CALL_HEAP_FUNCTION( \ |
| 1129 | isolate(), isolate()->heap()->Allocate##Type(lanes, pretenure), Type); \ |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1130 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1131 | SIMD128_TYPES(SIMD128_NEW_DEF) |
| 1132 | #undef SIMD128_NEW_DEF |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1133 | |
| 1134 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1135 | Handle<Object> Factory::NewError(Handle<JSFunction> constructor, |
| 1136 | MessageTemplate::Template template_index, |
| 1137 | Handle<Object> arg0, Handle<Object> arg1, |
| 1138 | Handle<Object> arg2) { |
| 1139 | HandleScope scope(isolate()); |
| 1140 | if (isolate()->bootstrapper()->IsActive()) { |
| 1141 | // During bootstrapping we cannot construct error objects. |
| 1142 | return scope.CloseAndEscape(NewStringFromAsciiChecked( |
| 1143 | MessageTemplate::TemplateString(template_index))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1144 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1145 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1146 | Handle<JSFunction> fun = isolate()->make_error_function(); |
| 1147 | Handle<Object> message_type(Smi::FromInt(template_index), isolate()); |
| 1148 | if (arg0.is_null()) arg0 = undefined_value(); |
| 1149 | if (arg1.is_null()) arg1 = undefined_value(); |
| 1150 | if (arg2.is_null()) arg2 = undefined_value(); |
| 1151 | Handle<Object> argv[] = {constructor, message_type, arg0, arg1, arg2}; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1152 | |
| 1153 | // Invoke the JavaScript factory method. If an exception is thrown while |
| 1154 | // running the factory method, use the exception as the result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1155 | Handle<Object> result; |
| 1156 | MaybeHandle<Object> exception; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1157 | if (!Execution::TryCall(isolate(), fun, undefined_value(), arraysize(argv), |
| 1158 | argv, &exception) |
| 1159 | .ToHandle(&result)) { |
| 1160 | Handle<Object> exception_obj; |
| 1161 | if (exception.ToHandle(&exception_obj)) { |
| 1162 | result = exception_obj; |
| 1163 | } else { |
| 1164 | result = undefined_value(); |
| 1165 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1166 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1167 | return scope.CloseAndEscape(result); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1168 | } |
| 1169 | |
| 1170 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1171 | Handle<Object> Factory::NewError(Handle<JSFunction> constructor, |
| 1172 | Handle<String> message) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1173 | Handle<Object> argv[] = { message }; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1174 | |
| 1175 | // Invoke the JavaScript factory method. If an exception is thrown while |
| 1176 | // running the factory method, use the exception as the result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1177 | Handle<Object> result; |
| 1178 | MaybeHandle<Object> exception; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1179 | if (!Execution::TryCall(isolate(), constructor, undefined_value(), |
| 1180 | arraysize(argv), argv, &exception) |
| 1181 | .ToHandle(&result)) { |
| 1182 | Handle<Object> exception_obj; |
| 1183 | if (exception.ToHandle(&exception_obj)) return exception_obj; |
| 1184 | return undefined_value(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1185 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1186 | return result; |
| 1187 | } |
| 1188 | |
| 1189 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1190 | #define DEFINE_ERROR(NAME, name) \ |
| 1191 | Handle<Object> Factory::New##NAME(MessageTemplate::Template template_index, \ |
| 1192 | Handle<Object> arg0, Handle<Object> arg1, \ |
| 1193 | Handle<Object> arg2) { \ |
| 1194 | return NewError(isolate()->name##_function(), template_index, arg0, arg1, \ |
| 1195 | arg2); \ |
| 1196 | } |
| 1197 | DEFINE_ERROR(Error, error) |
| 1198 | DEFINE_ERROR(EvalError, eval_error) |
| 1199 | DEFINE_ERROR(RangeError, range_error) |
| 1200 | DEFINE_ERROR(ReferenceError, reference_error) |
| 1201 | DEFINE_ERROR(SyntaxError, syntax_error) |
| 1202 | DEFINE_ERROR(TypeError, type_error) |
| 1203 | #undef DEFINE_ERROR |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1204 | |
| 1205 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1206 | Handle<JSFunction> Factory::NewFunction(Handle<Map> map, |
| 1207 | Handle<SharedFunctionInfo> info, |
| 1208 | Handle<Context> context, |
| 1209 | PretenureFlag pretenure) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1210 | AllocationSpace space = pretenure == TENURED ? OLD_SPACE : NEW_SPACE; |
| 1211 | Handle<JSFunction> function = New<JSFunction>(map, space); |
| 1212 | |
| 1213 | function->initialize_properties(); |
| 1214 | function->initialize_elements(); |
| 1215 | function->set_shared(*info); |
| 1216 | function->set_code(info->code()); |
| 1217 | function->set_context(*context); |
| 1218 | function->set_prototype_or_initial_map(*the_hole_value()); |
| 1219 | function->set_literals(LiteralsArray::cast(*empty_fixed_array())); |
| 1220 | function->set_next_function_link(*undefined_value(), SKIP_WRITE_BARRIER); |
| 1221 | isolate()->heap()->InitializeJSObjectBody(*function, *map, JSFunction::kSize); |
| 1222 | return function; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1223 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1224 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1225 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1226 | Handle<JSFunction> Factory::NewFunction(Handle<Map> map, |
| 1227 | Handle<String> name, |
| 1228 | MaybeHandle<Code> code) { |
| 1229 | Handle<Context> context(isolate()->native_context()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1230 | Handle<SharedFunctionInfo> info = |
| 1231 | NewSharedFunctionInfo(name, code, map->is_constructor()); |
| 1232 | DCHECK(is_sloppy(info->language_mode())); |
| 1233 | DCHECK(!map->IsUndefined()); |
| 1234 | DCHECK( |
| 1235 | map.is_identical_to(isolate()->sloppy_function_map()) || |
| 1236 | map.is_identical_to(isolate()->sloppy_function_without_prototype_map()) || |
| 1237 | map.is_identical_to( |
| 1238 | isolate()->sloppy_function_with_readonly_prototype_map()) || |
| 1239 | map.is_identical_to(isolate()->strict_function_map()) || |
| 1240 | // TODO(titzer): wasm_function_map() could be undefined here. ugly. |
| 1241 | (*map == context->get(Context::WASM_FUNCTION_MAP_INDEX)) || |
| 1242 | map.is_identical_to(isolate()->proxy_function_map())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1243 | return NewFunction(map, info, context); |
| 1244 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1245 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1246 | |
| 1247 | Handle<JSFunction> Factory::NewFunction(Handle<String> name) { |
| 1248 | return NewFunction( |
| 1249 | isolate()->sloppy_function_map(), name, MaybeHandle<Code>()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1250 | } |
| 1251 | |
| 1252 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1253 | Handle<JSFunction> Factory::NewFunctionWithoutPrototype(Handle<String> name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1254 | Handle<Code> code, |
| 1255 | bool is_strict) { |
| 1256 | Handle<Map> map = is_strict |
| 1257 | ? isolate()->strict_function_without_prototype_map() |
| 1258 | : isolate()->sloppy_function_without_prototype_map(); |
| 1259 | return NewFunction(map, name, code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1263 | Handle<JSFunction> Factory::NewFunction(Handle<String> name, Handle<Code> code, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1264 | Handle<Object> prototype, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1265 | bool read_only_prototype, |
| 1266 | bool is_strict) { |
| 1267 | // In strict mode, readonly strict map is only available during bootstrap |
| 1268 | DCHECK(!is_strict || !read_only_prototype || |
| 1269 | isolate()->bootstrapper()->IsActive()); |
| 1270 | Handle<Map> map = |
| 1271 | is_strict ? isolate()->strict_function_map() |
| 1272 | : read_only_prototype |
| 1273 | ? isolate()->sloppy_function_with_readonly_prototype_map() |
| 1274 | : isolate()->sloppy_function_map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1275 | Handle<JSFunction> result = NewFunction(map, name, code); |
| 1276 | result->set_prototype_or_initial_map(*prototype); |
| 1277 | return result; |
| 1278 | } |
| 1279 | |
| 1280 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1281 | Handle<JSFunction> Factory::NewFunction(Handle<String> name, Handle<Code> code, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1282 | Handle<Object> prototype, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1283 | InstanceType type, int instance_size, |
| 1284 | bool read_only_prototype, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1285 | bool install_constructor, |
| 1286 | bool is_strict) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1287 | // Allocate the function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1288 | Handle<JSFunction> function = |
| 1289 | NewFunction(name, code, prototype, read_only_prototype, is_strict); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1290 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1291 | ElementsKind elements_kind = |
| 1292 | type == JS_ARRAY_TYPE ? FAST_SMI_ELEMENTS : FAST_HOLEY_SMI_ELEMENTS; |
| 1293 | Handle<Map> initial_map = NewMap(type, instance_size, elements_kind); |
| 1294 | if (!function->shared()->is_generator()) { |
| 1295 | if (prototype->IsTheHole()) { |
| 1296 | prototype = NewFunctionPrototype(function); |
| 1297 | } else if (install_constructor) { |
| 1298 | JSObject::AddProperty(Handle<JSObject>::cast(prototype), |
| 1299 | constructor_string(), function, DONT_ENUM); |
| 1300 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1301 | } |
| 1302 | |
| 1303 | JSFunction::SetInitialMap(function, initial_map, |
| 1304 | Handle<JSReceiver>::cast(prototype)); |
| 1305 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1306 | return function; |
| 1307 | } |
| 1308 | |
| 1309 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1310 | Handle<JSFunction> Factory::NewFunction(Handle<String> name, |
| 1311 | Handle<Code> code, |
| 1312 | InstanceType type, |
| 1313 | int instance_size) { |
| 1314 | return NewFunction(name, code, the_hole_value(), type, instance_size); |
| 1315 | } |
| 1316 | |
| 1317 | |
| 1318 | Handle<JSObject> Factory::NewFunctionPrototype(Handle<JSFunction> function) { |
| 1319 | // Make sure to use globals from the function's context, since the function |
| 1320 | // can be from a different context. |
| 1321 | Handle<Context> native_context(function->context()->native_context()); |
| 1322 | Handle<Map> new_map; |
| 1323 | if (function->shared()->is_generator()) { |
| 1324 | // Generator prototypes can share maps since they don't have "constructor" |
| 1325 | // properties. |
| 1326 | new_map = handle(native_context->generator_object_prototype_map()); |
| 1327 | } else { |
| 1328 | // Each function prototype gets a fresh map to avoid unwanted sharing of |
| 1329 | // maps between prototypes of different constructors. |
| 1330 | Handle<JSFunction> object_function(native_context->object_function()); |
| 1331 | DCHECK(object_function->has_initial_map()); |
| 1332 | new_map = handle(object_function->initial_map()); |
| 1333 | } |
| 1334 | |
| 1335 | DCHECK(!new_map->is_prototype_map()); |
| 1336 | Handle<JSObject> prototype = NewJSObjectFromMap(new_map); |
| 1337 | |
| 1338 | if (!function->shared()->is_generator()) { |
| 1339 | JSObject::AddProperty(prototype, constructor_string(), function, DONT_ENUM); |
| 1340 | } |
| 1341 | |
| 1342 | return prototype; |
| 1343 | } |
| 1344 | |
| 1345 | |
| 1346 | Handle<JSFunction> Factory::NewFunctionFromSharedFunctionInfo( |
| 1347 | Handle<SharedFunctionInfo> info, |
| 1348 | Handle<Context> context, |
| 1349 | PretenureFlag pretenure) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1350 | int map_index = |
| 1351 | Context::FunctionMapIndex(info->language_mode(), info->kind()); |
| 1352 | Handle<Map> initial_map(Map::cast(context->native_context()->get(map_index))); |
| 1353 | |
| 1354 | return NewFunctionFromSharedFunctionInfo(initial_map, info, context, |
| 1355 | pretenure); |
| 1356 | } |
| 1357 | |
| 1358 | |
| 1359 | Handle<JSFunction> Factory::NewFunctionFromSharedFunctionInfo( |
| 1360 | Handle<Map> initial_map, Handle<SharedFunctionInfo> info, |
| 1361 | Handle<Context> context, PretenureFlag pretenure) { |
| 1362 | DCHECK_EQ(JS_FUNCTION_TYPE, initial_map->instance_type()); |
| 1363 | Handle<JSFunction> result = |
| 1364 | NewFunction(initial_map, info, context, pretenure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1365 | |
| 1366 | if (info->ic_age() != isolate()->heap()->global_ic_age()) { |
| 1367 | info->ResetForNewContext(isolate()->heap()->global_ic_age()); |
| 1368 | } |
| 1369 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1370 | // Give compiler a chance to pre-initialize. |
| 1371 | Compiler::PostInstantiation(result, pretenure); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1372 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1373 | return result; |
| 1374 | } |
| 1375 | |
| 1376 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1377 | Handle<ScopeInfo> Factory::NewScopeInfo(int length) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1378 | Handle<FixedArray> array = NewFixedArray(length, TENURED); |
| 1379 | array->set_map_no_write_barrier(*scope_info_map()); |
| 1380 | Handle<ScopeInfo> scope_info = Handle<ScopeInfo>::cast(array); |
| 1381 | return scope_info; |
| 1382 | } |
| 1383 | |
| 1384 | |
| 1385 | Handle<JSObject> Factory::NewExternal(void* value) { |
| 1386 | Handle<Foreign> foreign = NewForeign(static_cast<Address>(value)); |
| 1387 | Handle<JSObject> external = NewJSObjectFromMap(external_map()); |
| 1388 | external->SetInternalField(0, *foreign); |
| 1389 | return external; |
| 1390 | } |
| 1391 | |
| 1392 | |
| 1393 | Handle<Code> Factory::NewCodeRaw(int object_size, bool immovable) { |
| 1394 | CALL_HEAP_FUNCTION(isolate(), |
| 1395 | isolate()->heap()->AllocateCode(object_size, immovable), |
| 1396 | Code); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1397 | } |
| 1398 | |
| 1399 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1400 | Handle<Code> Factory::NewCode(const CodeDesc& desc, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1401 | Code::Flags flags, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1402 | Handle<Object> self_ref, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1403 | bool immovable, |
| 1404 | bool crankshafted, |
| 1405 | int prologue_offset, |
| 1406 | bool is_debug) { |
| 1407 | Handle<ByteArray> reloc_info = NewByteArray(desc.reloc_size, TENURED); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1408 | |
| 1409 | // Compute size. |
| 1410 | int body_size = RoundUp(desc.instr_size, kObjectAlignment); |
| 1411 | int obj_size = Code::SizeFor(body_size); |
| 1412 | |
| 1413 | Handle<Code> code = NewCodeRaw(obj_size, immovable); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1414 | DCHECK(isolate()->code_range() == NULL || !isolate()->code_range()->valid() || |
| 1415 | isolate()->code_range()->contains(code->address()) || |
| 1416 | obj_size <= isolate()->heap()->code_space()->AreaSize()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1417 | |
| 1418 | // The code object has not been fully initialized yet. We rely on the |
| 1419 | // fact that no allocation will happen from this point on. |
| 1420 | DisallowHeapAllocation no_gc; |
| 1421 | code->set_gc_metadata(Smi::FromInt(0)); |
| 1422 | code->set_ic_age(isolate()->heap()->global_ic_age()); |
| 1423 | code->set_instruction_size(desc.instr_size); |
| 1424 | code->set_relocation_info(*reloc_info); |
| 1425 | code->set_flags(flags); |
| 1426 | code->set_raw_kind_specific_flags1(0); |
| 1427 | code->set_raw_kind_specific_flags2(0); |
| 1428 | code->set_is_crankshafted(crankshafted); |
| 1429 | code->set_deoptimization_data(*empty_fixed_array(), SKIP_WRITE_BARRIER); |
| 1430 | code->set_raw_type_feedback_info(Smi::FromInt(0)); |
| 1431 | code->set_next_code_link(*undefined_value()); |
| 1432 | code->set_handler_table(*empty_fixed_array(), SKIP_WRITE_BARRIER); |
| 1433 | code->set_prologue_offset(prologue_offset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1434 | code->set_constant_pool_offset(desc.instr_size - desc.constant_pool_size); |
| 1435 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1436 | if (code->kind() == Code::OPTIMIZED_FUNCTION) { |
| 1437 | code->set_marked_for_deoptimization(false); |
| 1438 | } |
| 1439 | |
| 1440 | if (is_debug) { |
| 1441 | DCHECK(code->kind() == Code::FUNCTION); |
| 1442 | code->set_has_debug_break_slots(true); |
| 1443 | } |
| 1444 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1445 | // Allow self references to created code object by patching the handle to |
| 1446 | // point to the newly allocated Code object. |
| 1447 | if (!self_ref.is_null()) *(self_ref.location()) = *code; |
| 1448 | |
| 1449 | // Migrate generated code. |
| 1450 | // The generated code can contain Object** values (typically from handles) |
| 1451 | // that are dereferenced during the copy to point directly to the actual heap |
| 1452 | // objects. These pointers can include references to the code object itself, |
| 1453 | // through the self_reference parameter. |
| 1454 | code->CopyFrom(desc); |
| 1455 | |
| 1456 | #ifdef VERIFY_HEAP |
| 1457 | if (FLAG_verify_heap) code->ObjectVerify(); |
| 1458 | #endif |
| 1459 | return code; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1460 | } |
| 1461 | |
| 1462 | |
| 1463 | Handle<Code> Factory::CopyCode(Handle<Code> code) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1464 | CALL_HEAP_FUNCTION(isolate(), |
| 1465 | isolate()->heap()->CopyCode(*code), |
| 1466 | Code); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1467 | } |
| 1468 | |
| 1469 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1470 | Handle<Code> Factory::CopyCode(Handle<Code> code, Vector<byte> reloc_info) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1471 | CALL_HEAP_FUNCTION(isolate(), |
| 1472 | isolate()->heap()->CopyCode(*code, reloc_info), |
| 1473 | Code); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1474 | } |
| 1475 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1476 | Handle<BytecodeArray> Factory::CopyBytecodeArray( |
| 1477 | Handle<BytecodeArray> bytecode_array) { |
| 1478 | CALL_HEAP_FUNCTION(isolate(), |
| 1479 | isolate()->heap()->CopyBytecodeArray(*bytecode_array), |
| 1480 | BytecodeArray); |
| 1481 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1482 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1483 | Handle<JSObject> Factory::NewJSObject(Handle<JSFunction> constructor, |
| 1484 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1485 | JSFunction::EnsureHasInitialMap(constructor); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1486 | CALL_HEAP_FUNCTION( |
| 1487 | isolate(), |
| 1488 | isolate()->heap()->AllocateJSObject(*constructor, pretenure), JSObject); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1489 | } |
| 1490 | |
| 1491 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1492 | Handle<JSObject> Factory::NewJSObjectWithMemento( |
| 1493 | Handle<JSFunction> constructor, |
| 1494 | Handle<AllocationSite> site) { |
| 1495 | JSFunction::EnsureHasInitialMap(constructor); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1496 | CALL_HEAP_FUNCTION( |
| 1497 | isolate(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1498 | isolate()->heap()->AllocateJSObject(*constructor, NOT_TENURED, *site), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1499 | JSObject); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1500 | } |
| 1501 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1502 | Handle<JSObject> Factory::NewJSObjectWithNullProto() { |
| 1503 | Handle<JSObject> result = NewJSObject(isolate()->object_function()); |
| 1504 | Handle<Map> new_map = |
| 1505 | Map::Copy(Handle<Map>(result->map()), "ObjectWithNullProto"); |
| 1506 | Map::SetPrototype(new_map, null_value()); |
| 1507 | JSObject::MigrateToMap(result, new_map); |
| 1508 | return result; |
| 1509 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1510 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1511 | Handle<JSModule> Factory::NewJSModule(Handle<Context> context, |
| 1512 | Handle<ScopeInfo> scope_info) { |
| 1513 | // Allocate a fresh map. Modules do not have a prototype. |
| 1514 | Handle<Map> map = NewMap(JS_MODULE_TYPE, JSModule::kSize); |
| 1515 | // Allocate the object based on the map. |
| 1516 | Handle<JSModule> module = |
| 1517 | Handle<JSModule>::cast(NewJSObjectFromMap(map, TENURED)); |
| 1518 | module->set_context(*context); |
| 1519 | module->set_scope_info(*scope_info); |
| 1520 | return module; |
| 1521 | } |
| 1522 | |
| 1523 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1524 | Handle<JSGlobalObject> Factory::NewJSGlobalObject( |
| 1525 | Handle<JSFunction> constructor) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1526 | DCHECK(constructor->has_initial_map()); |
| 1527 | Handle<Map> map(constructor->initial_map()); |
| 1528 | DCHECK(map->is_dictionary_map()); |
| 1529 | |
| 1530 | // Make sure no field properties are described in the initial map. |
| 1531 | // This guarantees us that normalizing the properties does not |
| 1532 | // require us to change property values to PropertyCells. |
| 1533 | DCHECK(map->NextFreePropertyIndex() == 0); |
| 1534 | |
| 1535 | // Make sure we don't have a ton of pre-allocated slots in the |
| 1536 | // global objects. They will be unused once we normalize the object. |
| 1537 | DCHECK(map->unused_property_fields() == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1538 | DCHECK(map->GetInObjectProperties() == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1539 | |
| 1540 | // Initial size of the backing store to avoid resize of the storage during |
| 1541 | // bootstrapping. The size differs between the JS global object ad the |
| 1542 | // builtins object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1543 | int initial_size = 64; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1544 | |
| 1545 | // Allocate a dictionary object for backing storage. |
| 1546 | int at_least_space_for = map->NumberOfOwnDescriptors() * 2 + initial_size; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1547 | Handle<GlobalDictionary> dictionary = |
| 1548 | GlobalDictionary::New(isolate(), at_least_space_for); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1549 | |
| 1550 | // The global object might be created from an object template with accessors. |
| 1551 | // Fill these accessors into the dictionary. |
| 1552 | Handle<DescriptorArray> descs(map->instance_descriptors()); |
| 1553 | for (int i = 0; i < map->NumberOfOwnDescriptors(); i++) { |
| 1554 | PropertyDetails details = descs->GetDetails(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1555 | // Only accessors are expected. |
| 1556 | DCHECK_EQ(ACCESSOR_CONSTANT, details.type()); |
| 1557 | PropertyDetails d(details.attributes(), ACCESSOR_CONSTANT, i + 1, |
| 1558 | PropertyCellType::kMutable); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1559 | Handle<Name> name(descs->GetKey(i)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1560 | Handle<PropertyCell> cell = NewPropertyCell(); |
| 1561 | cell->set_value(descs->GetCallbacksObject(i)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1562 | // |dictionary| already contains enough space for all properties. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1563 | USE(GlobalDictionary::Add(dictionary, name, cell, d)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1564 | } |
| 1565 | |
| 1566 | // Allocate the global object and initialize it with the backing store. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1567 | Handle<JSGlobalObject> global = New<JSGlobalObject>(map, OLD_SPACE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1568 | isolate()->heap()->InitializeJSObjectFromMap(*global, *dictionary, *map); |
| 1569 | |
| 1570 | // Create a new map for the global object. |
| 1571 | Handle<Map> new_map = Map::CopyDropDescriptors(map); |
| 1572 | new_map->set_dictionary_map(true); |
| 1573 | |
| 1574 | // Set up the global object as a normalized object. |
| 1575 | global->set_map(*new_map); |
| 1576 | global->set_properties(*dictionary); |
| 1577 | |
| 1578 | // Make sure result is a global object with properties in dictionary. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1579 | DCHECK(global->IsJSGlobalObject() && !global->HasFastProperties()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1580 | return global; |
| 1581 | } |
| 1582 | |
| 1583 | |
| 1584 | Handle<JSObject> Factory::NewJSObjectFromMap( |
| 1585 | Handle<Map> map, |
| 1586 | PretenureFlag pretenure, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1587 | Handle<AllocationSite> allocation_site) { |
| 1588 | CALL_HEAP_FUNCTION( |
| 1589 | isolate(), |
| 1590 | isolate()->heap()->AllocateJSObjectFromMap( |
| 1591 | *map, |
| 1592 | pretenure, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1593 | allocation_site.is_null() ? NULL : *allocation_site), |
| 1594 | JSObject); |
| 1595 | } |
| 1596 | |
| 1597 | |
| 1598 | Handle<JSArray> Factory::NewJSArray(ElementsKind elements_kind, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1599 | PretenureFlag pretenure) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1600 | Map* map = isolate()->get_initial_js_array_map(elements_kind); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1601 | if (map == nullptr) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1602 | Context* native_context = isolate()->context()->native_context(); |
| 1603 | JSFunction* array_function = native_context->array_function(); |
| 1604 | map = array_function->initial_map(); |
| 1605 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1606 | return Handle<JSArray>::cast(NewJSObjectFromMap(handle(map), pretenure)); |
| 1607 | } |
| 1608 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1609 | Handle<JSArray> Factory::NewJSArray(ElementsKind elements_kind, int length, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1610 | int capacity, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1611 | ArrayStorageAllocationMode mode, |
| 1612 | PretenureFlag pretenure) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1613 | Handle<JSArray> array = NewJSArray(elements_kind, pretenure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1614 | NewJSArrayStorage(array, length, capacity, mode); |
| 1615 | return array; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1616 | } |
| 1617 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1618 | Handle<JSArray> Factory::NewJSArrayWithElements(Handle<FixedArrayBase> elements, |
| 1619 | ElementsKind elements_kind, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1620 | int length, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1621 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1622 | DCHECK(length <= elements->length()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 1623 | Handle<JSArray> array = NewJSArray(elements_kind, pretenure); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1624 | |
| 1625 | array->set_elements(*elements); |
| 1626 | array->set_length(Smi::FromInt(length)); |
| 1627 | JSObject::ValidateElements(array); |
| 1628 | return array; |
| 1629 | } |
| 1630 | |
| 1631 | |
| 1632 | void Factory::NewJSArrayStorage(Handle<JSArray> array, |
| 1633 | int length, |
| 1634 | int capacity, |
| 1635 | ArrayStorageAllocationMode mode) { |
| 1636 | DCHECK(capacity >= length); |
| 1637 | |
| 1638 | if (capacity == 0) { |
| 1639 | array->set_length(Smi::FromInt(0)); |
| 1640 | array->set_elements(*empty_fixed_array()); |
| 1641 | return; |
| 1642 | } |
| 1643 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1644 | HandleScope inner_scope(isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1645 | Handle<FixedArrayBase> elms; |
| 1646 | ElementsKind elements_kind = array->GetElementsKind(); |
| 1647 | if (IsFastDoubleElementsKind(elements_kind)) { |
| 1648 | if (mode == DONT_INITIALIZE_ARRAY_ELEMENTS) { |
| 1649 | elms = NewFixedDoubleArray(capacity); |
| 1650 | } else { |
| 1651 | DCHECK(mode == INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE); |
| 1652 | elms = NewFixedDoubleArrayWithHoles(capacity); |
| 1653 | } |
| 1654 | } else { |
| 1655 | DCHECK(IsFastSmiOrObjectElementsKind(elements_kind)); |
| 1656 | if (mode == DONT_INITIALIZE_ARRAY_ELEMENTS) { |
| 1657 | elms = NewUninitializedFixedArray(capacity); |
| 1658 | } else { |
| 1659 | DCHECK(mode == INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE); |
| 1660 | elms = NewFixedArrayWithHoles(capacity); |
| 1661 | } |
| 1662 | } |
| 1663 | |
| 1664 | array->set_elements(*elms); |
| 1665 | array->set_length(Smi::FromInt(length)); |
| 1666 | } |
| 1667 | |
| 1668 | |
| 1669 | Handle<JSGeneratorObject> Factory::NewJSGeneratorObject( |
| 1670 | Handle<JSFunction> function) { |
| 1671 | DCHECK(function->shared()->is_generator()); |
| 1672 | JSFunction::EnsureHasInitialMap(function); |
| 1673 | Handle<Map> map(function->initial_map()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1674 | DCHECK_EQ(JS_GENERATOR_OBJECT_TYPE, map->instance_type()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1675 | CALL_HEAP_FUNCTION( |
| 1676 | isolate(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1677 | isolate()->heap()->AllocateJSObjectFromMap(*map), |
| 1678 | JSGeneratorObject); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1679 | } |
| 1680 | |
| 1681 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1682 | Handle<JSArrayBuffer> Factory::NewJSArrayBuffer(SharedFlag shared, |
| 1683 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1684 | Handle<JSFunction> array_buffer_fun( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1685 | shared == SharedFlag::kShared |
| 1686 | ? isolate()->native_context()->shared_array_buffer_fun() |
| 1687 | : isolate()->native_context()->array_buffer_fun()); |
| 1688 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateJSObject( |
| 1689 | *array_buffer_fun, pretenure), |
| 1690 | JSArrayBuffer); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1691 | } |
| 1692 | |
| 1693 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1694 | Handle<JSDataView> Factory::NewJSDataView() { |
| 1695 | Handle<JSFunction> data_view_fun( |
| 1696 | isolate()->native_context()->data_view_fun()); |
| 1697 | CALL_HEAP_FUNCTION( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1698 | isolate(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1699 | isolate()->heap()->AllocateJSObject(*data_view_fun), |
| 1700 | JSDataView); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1701 | } |
| 1702 | |
| 1703 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1704 | Handle<JSMap> Factory::NewJSMap() { |
| 1705 | Handle<Map> map(isolate()->native_context()->js_map_map()); |
| 1706 | Handle<JSMap> js_map = Handle<JSMap>::cast(NewJSObjectFromMap(map)); |
| 1707 | JSMap::Initialize(js_map, isolate()); |
| 1708 | return js_map; |
| 1709 | } |
| 1710 | |
| 1711 | |
| 1712 | Handle<JSSet> Factory::NewJSSet() { |
| 1713 | Handle<Map> map(isolate()->native_context()->js_set_map()); |
| 1714 | Handle<JSSet> js_set = Handle<JSSet>::cast(NewJSObjectFromMap(map)); |
| 1715 | JSSet::Initialize(js_set, isolate()); |
| 1716 | return js_set; |
| 1717 | } |
| 1718 | |
| 1719 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1720 | Handle<JSMapIterator> Factory::NewJSMapIterator() { |
| 1721 | Handle<Map> map(isolate()->native_context()->map_iterator_map()); |
| 1722 | CALL_HEAP_FUNCTION(isolate(), |
| 1723 | isolate()->heap()->AllocateJSObjectFromMap(*map), |
| 1724 | JSMapIterator); |
| 1725 | } |
| 1726 | |
| 1727 | |
| 1728 | Handle<JSSetIterator> Factory::NewJSSetIterator() { |
| 1729 | Handle<Map> map(isolate()->native_context()->set_iterator_map()); |
| 1730 | CALL_HEAP_FUNCTION(isolate(), |
| 1731 | isolate()->heap()->AllocateJSObjectFromMap(*map), |
| 1732 | JSSetIterator); |
| 1733 | } |
| 1734 | |
| 1735 | |
| 1736 | namespace { |
| 1737 | |
| 1738 | ElementsKind GetExternalArrayElementsKind(ExternalArrayType type) { |
| 1739 | switch (type) { |
| 1740 | #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ |
| 1741 | case kExternal##Type##Array: \ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1742 | return TYPE##_ELEMENTS; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1743 | TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 1744 | } |
| 1745 | UNREACHABLE(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1746 | return FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1747 | #undef TYPED_ARRAY_CASE |
| 1748 | } |
| 1749 | |
| 1750 | |
| 1751 | size_t GetExternalArrayElementSize(ExternalArrayType type) { |
| 1752 | switch (type) { |
| 1753 | #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ |
| 1754 | case kExternal##Type##Array: \ |
| 1755 | return size; |
| 1756 | TYPED_ARRAYS(TYPED_ARRAY_CASE) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1757 | default: |
| 1758 | UNREACHABLE(); |
| 1759 | return 0; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1760 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1761 | #undef TYPED_ARRAY_CASE |
| 1762 | } |
| 1763 | |
| 1764 | |
| 1765 | size_t GetFixedTypedArraysElementSize(ElementsKind kind) { |
| 1766 | switch (kind) { |
| 1767 | #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ |
| 1768 | case TYPE##_ELEMENTS: \ |
| 1769 | return size; |
| 1770 | TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 1771 | default: |
| 1772 | UNREACHABLE(); |
| 1773 | return 0; |
| 1774 | } |
| 1775 | #undef TYPED_ARRAY_CASE |
| 1776 | } |
| 1777 | |
| 1778 | |
| 1779 | ExternalArrayType GetArrayTypeFromElementsKind(ElementsKind kind) { |
| 1780 | switch (kind) { |
| 1781 | #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ |
| 1782 | case TYPE##_ELEMENTS: \ |
| 1783 | return kExternal##Type##Array; |
| 1784 | TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 1785 | default: |
| 1786 | UNREACHABLE(); |
| 1787 | return kExternalInt8Array; |
| 1788 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1789 | #undef TYPED_ARRAY_CASE |
| 1790 | } |
| 1791 | |
| 1792 | |
| 1793 | JSFunction* GetTypedArrayFun(ExternalArrayType type, Isolate* isolate) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1794 | Context* native_context = isolate->context()->native_context(); |
| 1795 | switch (type) { |
| 1796 | #define TYPED_ARRAY_FUN(Type, type, TYPE, ctype, size) \ |
| 1797 | case kExternal##Type##Array: \ |
| 1798 | return native_context->type##_array_fun(); |
| 1799 | |
| 1800 | TYPED_ARRAYS(TYPED_ARRAY_FUN) |
| 1801 | #undef TYPED_ARRAY_FUN |
| 1802 | |
| 1803 | default: |
| 1804 | UNREACHABLE(); |
| 1805 | return NULL; |
| 1806 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1807 | } |
| 1808 | |
| 1809 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1810 | JSFunction* GetTypedArrayFun(ElementsKind elements_kind, Isolate* isolate) { |
| 1811 | Context* native_context = isolate->context()->native_context(); |
| 1812 | switch (elements_kind) { |
| 1813 | #define TYPED_ARRAY_FUN(Type, type, TYPE, ctype, size) \ |
| 1814 | case TYPE##_ELEMENTS: \ |
| 1815 | return native_context->type##_array_fun(); |
| 1816 | |
| 1817 | TYPED_ARRAYS(TYPED_ARRAY_FUN) |
| 1818 | #undef TYPED_ARRAY_FUN |
| 1819 | |
| 1820 | default: |
| 1821 | UNREACHABLE(); |
| 1822 | return NULL; |
| 1823 | } |
| 1824 | } |
| 1825 | |
| 1826 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1827 | void SetupArrayBufferView(i::Isolate* isolate, |
| 1828 | i::Handle<i::JSArrayBufferView> obj, |
| 1829 | i::Handle<i::JSArrayBuffer> buffer, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1830 | size_t byte_offset, size_t byte_length, |
| 1831 | PretenureFlag pretenure = NOT_TENURED) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1832 | DCHECK(byte_offset + byte_length <= |
| 1833 | static_cast<size_t>(buffer->byte_length()->Number())); |
| 1834 | |
| 1835 | obj->set_buffer(*buffer); |
| 1836 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1837 | i::Handle<i::Object> byte_offset_object = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1838 | isolate->factory()->NewNumberFromSize(byte_offset, pretenure); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1839 | obj->set_byte_offset(*byte_offset_object); |
| 1840 | |
| 1841 | i::Handle<i::Object> byte_length_object = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1842 | isolate->factory()->NewNumberFromSize(byte_length, pretenure); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1843 | obj->set_byte_length(*byte_length_object); |
| 1844 | } |
| 1845 | |
| 1846 | |
| 1847 | } // namespace |
| 1848 | |
| 1849 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1850 | Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type, |
| 1851 | PretenureFlag pretenure) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1852 | Handle<JSFunction> typed_array_fun_handle(GetTypedArrayFun(type, isolate())); |
| 1853 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1854 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateJSObject( |
| 1855 | *typed_array_fun_handle, pretenure), |
| 1856 | JSTypedArray); |
| 1857 | } |
| 1858 | |
| 1859 | |
| 1860 | Handle<JSTypedArray> Factory::NewJSTypedArray(ElementsKind elements_kind, |
| 1861 | PretenureFlag pretenure) { |
| 1862 | Handle<JSFunction> typed_array_fun_handle( |
| 1863 | GetTypedArrayFun(elements_kind, isolate())); |
| 1864 | |
| 1865 | CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateJSObject( |
| 1866 | *typed_array_fun_handle, pretenure), |
| 1867 | JSTypedArray); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1868 | } |
| 1869 | |
| 1870 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1871 | Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type, |
| 1872 | Handle<JSArrayBuffer> buffer, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1873 | size_t byte_offset, size_t length, |
| 1874 | PretenureFlag pretenure) { |
| 1875 | Handle<JSTypedArray> obj = NewJSTypedArray(type, pretenure); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1876 | |
| 1877 | size_t element_size = GetExternalArrayElementSize(type); |
| 1878 | ElementsKind elements_kind = GetExternalArrayElementsKind(type); |
| 1879 | |
| 1880 | CHECK(byte_offset % element_size == 0); |
| 1881 | |
| 1882 | CHECK(length <= (std::numeric_limits<size_t>::max() / element_size)); |
| 1883 | CHECK(length <= static_cast<size_t>(Smi::kMaxValue)); |
| 1884 | size_t byte_length = length * element_size; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1885 | SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length, |
| 1886 | pretenure); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1887 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1888 | Handle<Object> length_object = NewNumberFromSize(length, pretenure); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1889 | obj->set_length(*length_object); |
| 1890 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1891 | Handle<FixedTypedArrayBase> elements = NewFixedTypedArrayWithExternalPointer( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1892 | static_cast<int>(length), type, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1893 | static_cast<uint8_t*>(buffer->backing_store()) + byte_offset, pretenure); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1894 | Handle<Map> map = JSObject::GetElementsTransitionMap(obj, elements_kind); |
| 1895 | JSObject::SetMapAndElements(obj, map, elements); |
| 1896 | return obj; |
| 1897 | } |
| 1898 | |
| 1899 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1900 | Handle<JSTypedArray> Factory::NewJSTypedArray(ElementsKind elements_kind, |
| 1901 | size_t number_of_elements, |
| 1902 | PretenureFlag pretenure) { |
| 1903 | Handle<JSTypedArray> obj = NewJSTypedArray(elements_kind, pretenure); |
| 1904 | |
| 1905 | size_t element_size = GetFixedTypedArraysElementSize(elements_kind); |
| 1906 | ExternalArrayType array_type = GetArrayTypeFromElementsKind(elements_kind); |
| 1907 | |
| 1908 | CHECK(number_of_elements <= |
| 1909 | (std::numeric_limits<size_t>::max() / element_size)); |
| 1910 | CHECK(number_of_elements <= static_cast<size_t>(Smi::kMaxValue)); |
| 1911 | size_t byte_length = number_of_elements * element_size; |
| 1912 | |
| 1913 | obj->set_byte_offset(Smi::FromInt(0)); |
| 1914 | i::Handle<i::Object> byte_length_object = |
| 1915 | NewNumberFromSize(byte_length, pretenure); |
| 1916 | obj->set_byte_length(*byte_length_object); |
| 1917 | Handle<Object> length_object = |
| 1918 | NewNumberFromSize(number_of_elements, pretenure); |
| 1919 | obj->set_length(*length_object); |
| 1920 | |
| 1921 | Handle<JSArrayBuffer> buffer = |
| 1922 | NewJSArrayBuffer(SharedFlag::kNotShared, pretenure); |
| 1923 | JSArrayBuffer::Setup(buffer, isolate(), true, NULL, byte_length, |
| 1924 | SharedFlag::kNotShared); |
| 1925 | obj->set_buffer(*buffer); |
| 1926 | Handle<FixedTypedArrayBase> elements = NewFixedTypedArray( |
| 1927 | static_cast<int>(number_of_elements), array_type, true, pretenure); |
| 1928 | obj->set_elements(*elements); |
| 1929 | return obj; |
| 1930 | } |
| 1931 | |
| 1932 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1933 | Handle<JSDataView> Factory::NewJSDataView(Handle<JSArrayBuffer> buffer, |
| 1934 | size_t byte_offset, |
| 1935 | size_t byte_length) { |
| 1936 | Handle<JSDataView> obj = NewJSDataView(); |
| 1937 | SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length); |
| 1938 | return obj; |
| 1939 | } |
| 1940 | |
| 1941 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1942 | MaybeHandle<JSBoundFunction> Factory::NewJSBoundFunction( |
| 1943 | Handle<JSReceiver> target_function, Handle<Object> bound_this, |
| 1944 | Vector<Handle<Object>> bound_args) { |
| 1945 | DCHECK(target_function->IsCallable()); |
| 1946 | STATIC_ASSERT(Code::kMaxArguments <= FixedArray::kMaxLength); |
| 1947 | if (bound_args.length() >= Code::kMaxArguments) { |
| 1948 | THROW_NEW_ERROR(isolate(), |
| 1949 | NewRangeError(MessageTemplate::kTooManyArguments), |
| 1950 | JSBoundFunction); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1951 | } |
| 1952 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1953 | // Determine the prototype of the {target_function}. |
| 1954 | Handle<Object> prototype; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1955 | ASSIGN_RETURN_ON_EXCEPTION( |
| 1956 | isolate(), prototype, |
| 1957 | JSReceiver::GetPrototype(isolate(), target_function), JSBoundFunction); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1958 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1959 | // Create the [[BoundArguments]] for the result. |
| 1960 | Handle<FixedArray> bound_arguments; |
| 1961 | if (bound_args.length() == 0) { |
| 1962 | bound_arguments = empty_fixed_array(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1963 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1964 | bound_arguments = NewFixedArray(bound_args.length()); |
| 1965 | for (int i = 0; i < bound_args.length(); ++i) { |
| 1966 | bound_arguments->set(i, *bound_args[i]); |
| 1967 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1968 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1969 | |
| 1970 | // Setup the map for the JSBoundFunction instance. |
| 1971 | Handle<Map> map = handle( |
| 1972 | target_function->IsConstructor() |
| 1973 | ? isolate()->native_context()->bound_function_with_constructor_map() |
| 1974 | : isolate() |
| 1975 | ->native_context() |
| 1976 | ->bound_function_without_constructor_map(), |
| 1977 | isolate()); |
| 1978 | if (map->prototype() != *prototype) { |
| 1979 | map = Map::TransitionToPrototype(map, prototype, REGULAR_PROTOTYPE); |
| 1980 | } |
| 1981 | DCHECK_EQ(target_function->IsConstructor(), map->is_constructor()); |
| 1982 | |
| 1983 | // Setup the JSBoundFunction instance. |
| 1984 | Handle<JSBoundFunction> result = |
| 1985 | Handle<JSBoundFunction>::cast(NewJSObjectFromMap(map)); |
| 1986 | result->set_bound_target_function(*target_function); |
| 1987 | result->set_bound_this(*bound_this); |
| 1988 | result->set_bound_arguments(*bound_arguments); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1989 | result->set_length(Smi::FromInt(0)); |
| 1990 | result->set_name(*undefined_value(), SKIP_WRITE_BARRIER); |
| 1991 | return result; |
| 1992 | } |
| 1993 | |
| 1994 | |
| 1995 | // ES6 section 9.5.15 ProxyCreate (target, handler) |
| 1996 | Handle<JSProxy> Factory::NewJSProxy(Handle<JSReceiver> target, |
| 1997 | Handle<JSReceiver> handler) { |
| 1998 | // Allocate the proxy object. |
| 1999 | Handle<Map> map; |
| 2000 | if (target->IsCallable()) { |
| 2001 | if (target->IsConstructor()) { |
| 2002 | map = Handle<Map>(isolate()->proxy_constructor_map()); |
| 2003 | } else { |
| 2004 | map = Handle<Map>(isolate()->proxy_callable_map()); |
| 2005 | } |
| 2006 | } else { |
| 2007 | map = Handle<Map>(isolate()->proxy_map()); |
| 2008 | } |
| 2009 | DCHECK(map->prototype()->IsNull()); |
| 2010 | Handle<JSProxy> result = New<JSProxy>(map, NEW_SPACE); |
| 2011 | result->initialize_properties(); |
| 2012 | result->set_target(*target); |
| 2013 | result->set_handler(*handler); |
| 2014 | result->set_hash(*undefined_value(), SKIP_WRITE_BARRIER); |
| 2015 | return result; |
| 2016 | } |
| 2017 | |
| 2018 | |
| 2019 | Handle<JSGlobalProxy> Factory::NewUninitializedJSGlobalProxy() { |
| 2020 | // Create an empty shell of a JSGlobalProxy that needs to be reinitialized |
| 2021 | // via ReinitializeJSGlobalProxy later. |
| 2022 | Handle<Map> map = NewMap(JS_GLOBAL_PROXY_TYPE, JSGlobalProxy::kSize); |
| 2023 | // Maintain invariant expected from any JSGlobalProxy. |
| 2024 | map->set_is_access_check_needed(true); |
| 2025 | CALL_HEAP_FUNCTION( |
| 2026 | isolate(), isolate()->heap()->AllocateJSObjectFromMap(*map, NOT_TENURED), |
| 2027 | JSGlobalProxy); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2028 | } |
| 2029 | |
| 2030 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2031 | void Factory::ReinitializeJSGlobalProxy(Handle<JSGlobalProxy> object, |
| 2032 | Handle<JSFunction> constructor) { |
| 2033 | DCHECK(constructor->has_initial_map()); |
| 2034 | Handle<Map> map(constructor->initial_map(), isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2035 | Handle<Map> old_map(object->map(), isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2036 | |
| 2037 | // The proxy's hash should be retained across reinitialization. |
| 2038 | Handle<Object> hash(object->hash(), isolate()); |
| 2039 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2040 | JSObject::InvalidatePrototypeChains(*old_map); |
| 2041 | if (old_map->is_prototype_map()) { |
| 2042 | map = Map::Copy(map, "CopyAsPrototypeForJSGlobalProxy"); |
| 2043 | map->set_is_prototype_map(true); |
| 2044 | } |
| 2045 | JSObject::UpdatePrototypeUserRegistration(old_map, map, isolate()); |
| 2046 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2047 | // Check that the already allocated object has the same size and type as |
| 2048 | // objects allocated using the constructor. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2049 | DCHECK(map->instance_size() == old_map->instance_size()); |
| 2050 | DCHECK(map->instance_type() == old_map->instance_type()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2051 | |
| 2052 | // Allocate the backing storage for the properties. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2053 | Handle<FixedArray> properties = empty_fixed_array(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2054 | |
| 2055 | // In order to keep heap in consistent state there must be no allocations |
| 2056 | // before object re-initialization is finished. |
| 2057 | DisallowHeapAllocation no_allocation; |
| 2058 | |
| 2059 | // Reset the map for the object. |
| 2060 | object->synchronized_set_map(*map); |
| 2061 | |
| 2062 | Heap* heap = isolate()->heap(); |
| 2063 | // Reinitialize the object from the constructor map. |
| 2064 | heap->InitializeJSObjectFromMap(*object, *properties, *map); |
| 2065 | |
| 2066 | // Restore the saved hash. |
| 2067 | object->set_hash(*hash); |
| 2068 | } |
| 2069 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2070 | Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2071 | Handle<String> name, int number_of_literals, FunctionKind kind, |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 2072 | Handle<Code> code, Handle<ScopeInfo> scope_info) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2073 | DCHECK(IsValidFunctionKind(kind)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2074 | Handle<SharedFunctionInfo> shared = NewSharedFunctionInfo( |
| 2075 | name, code, IsConstructable(kind, scope_info->language_mode())); |
Ben Murdoch | 3bec4d2 | 2010-07-22 14:51:16 +0100 | [diff] [blame] | 2076 | shared->set_scope_info(*scope_info); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2077 | shared->set_kind(kind); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2078 | shared->set_num_literals(number_of_literals); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2079 | if (IsGeneratorFunction(kind)) { |
| 2080 | shared->set_instance_class_name(isolate()->heap()->Generator_string()); |
| 2081 | shared->DisableOptimization(kGenerator); |
| 2082 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2083 | return shared; |
| 2084 | } |
| 2085 | |
| 2086 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2087 | Handle<JSMessageObject> Factory::NewJSMessageObject( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2088 | MessageTemplate::Template message, Handle<Object> argument, |
| 2089 | int start_position, int end_position, Handle<Object> script, |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2090 | Handle<Object> stack_frames) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2091 | Handle<Map> map = message_object_map(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2092 | Handle<JSMessageObject> message_obj = New<JSMessageObject>(map, NEW_SPACE); |
| 2093 | message_obj->set_properties(*empty_fixed_array(), SKIP_WRITE_BARRIER); |
| 2094 | message_obj->initialize_elements(); |
| 2095 | message_obj->set_elements(*empty_fixed_array(), SKIP_WRITE_BARRIER); |
| 2096 | message_obj->set_type(message); |
| 2097 | message_obj->set_argument(*argument); |
| 2098 | message_obj->set_start_position(start_position); |
| 2099 | message_obj->set_end_position(end_position); |
| 2100 | message_obj->set_script(*script); |
| 2101 | message_obj->set_stack_frames(*stack_frames); |
| 2102 | return message_obj; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2106 | Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2107 | Handle<String> name, MaybeHandle<Code> maybe_code, bool is_constructor) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2108 | // Function names are assumed to be flat elsewhere. Must flatten before |
| 2109 | // allocating SharedFunctionInfo to avoid GC seeing the uninitialized SFI. |
| 2110 | name = String::Flatten(name, TENURED); |
| 2111 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2112 | Handle<Map> map = shared_function_info_map(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2113 | Handle<SharedFunctionInfo> share = New<SharedFunctionInfo>(map, OLD_SPACE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2114 | |
| 2115 | // Set pointer fields. |
| 2116 | share->set_name(*name); |
| 2117 | Handle<Code> code; |
| 2118 | if (!maybe_code.ToHandle(&code)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2119 | code = isolate()->builtins()->Illegal(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2120 | } |
| 2121 | share->set_code(*code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2122 | share->set_optimized_code_map(*cleared_optimized_code_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2123 | share->set_scope_info(ScopeInfo::Empty(isolate())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2124 | Handle<Code> construct_stub = |
| 2125 | is_constructor ? isolate()->builtins()->JSConstructStubGeneric() |
| 2126 | : isolate()->builtins()->ConstructedNonConstructable(); |
| 2127 | share->set_construct_stub(*construct_stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2128 | share->set_instance_class_name(*Object_string()); |
| 2129 | share->set_function_data(*undefined_value(), SKIP_WRITE_BARRIER); |
| 2130 | share->set_script(*undefined_value(), SKIP_WRITE_BARRIER); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2131 | share->set_debug_info(DebugInfo::uninitialized(), SKIP_WRITE_BARRIER); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 2132 | share->set_function_identifier(*undefined_value(), SKIP_WRITE_BARRIER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2133 | StaticFeedbackVectorSpec empty_spec; |
| 2134 | Handle<TypeFeedbackMetadata> feedback_metadata = |
| 2135 | TypeFeedbackMetadata::New(isolate(), &empty_spec); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2136 | Handle<TypeFeedbackVector> feedback_vector = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2137 | TypeFeedbackVector::New(isolate(), feedback_metadata); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2138 | share->set_feedback_vector(*feedback_vector, SKIP_WRITE_BARRIER); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2139 | #if TRACE_MAPS |
| 2140 | share->set_unique_id(isolate()->GetNextUniqueSharedFunctionInfoId()); |
| 2141 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2142 | share->set_profiler_ticks(0); |
| 2143 | share->set_ast_node_count(0); |
| 2144 | share->set_counters(0); |
| 2145 | |
| 2146 | // Set integer fields (smi or int, depending on the architecture). |
| 2147 | share->set_length(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2148 | share->set_internal_formal_parameter_count(0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2149 | share->set_expected_nof_properties(0); |
| 2150 | share->set_num_literals(0); |
| 2151 | share->set_start_position_and_type(0); |
| 2152 | share->set_end_position(0); |
| 2153 | share->set_function_token_position(0); |
| 2154 | // All compiler hints default to false or 0. |
| 2155 | share->set_compiler_hints(0); |
| 2156 | share->set_opt_count_and_bailout_reason(0); |
| 2157 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2158 | // Link into the list. |
| 2159 | Handle<Object> new_noscript_list = |
| 2160 | WeakFixedArray::Add(noscript_shared_function_infos(), share); |
| 2161 | isolate()->heap()->set_noscript_shared_function_infos(*new_noscript_list); |
| 2162 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2163 | return share; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2164 | } |
| 2165 | |
| 2166 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2167 | static inline int NumberCacheHash(Handle<FixedArray> cache, |
| 2168 | Handle<Object> number) { |
| 2169 | int mask = (cache->length() >> 1) - 1; |
| 2170 | if (number->IsSmi()) { |
| 2171 | return Handle<Smi>::cast(number)->value() & mask; |
| 2172 | } else { |
| 2173 | DoubleRepresentation rep(number->Number()); |
| 2174 | return |
| 2175 | (static_cast<int>(rep.bits) ^ static_cast<int>(rep.bits >> 32)) & mask; |
| 2176 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2177 | } |
| 2178 | |
| 2179 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2180 | Handle<Object> Factory::GetNumberStringCache(Handle<Object> number) { |
| 2181 | DisallowHeapAllocation no_gc; |
| 2182 | int hash = NumberCacheHash(number_string_cache(), number); |
| 2183 | Object* key = number_string_cache()->get(hash * 2); |
| 2184 | if (key == *number || (key->IsHeapNumber() && number->IsHeapNumber() && |
| 2185 | key->Number() == number->Number())) { |
| 2186 | return Handle<String>( |
| 2187 | String::cast(number_string_cache()->get(hash * 2 + 1)), isolate()); |
| 2188 | } |
| 2189 | return undefined_value(); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 2190 | } |
| 2191 | |
| 2192 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2193 | void Factory::SetNumberStringCache(Handle<Object> number, |
| 2194 | Handle<String> string) { |
| 2195 | int hash = NumberCacheHash(number_string_cache(), number); |
| 2196 | if (number_string_cache()->get(hash * 2) != *undefined_value()) { |
| 2197 | int full_size = isolate()->heap()->FullSizeNumberStringCacheLength(); |
| 2198 | if (number_string_cache()->length() != full_size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2199 | Handle<FixedArray> new_cache = NewFixedArray(full_size, TENURED); |
| 2200 | isolate()->heap()->set_number_string_cache(*new_cache); |
| 2201 | return; |
| 2202 | } |
| 2203 | } |
| 2204 | number_string_cache()->set(hash * 2, *number); |
| 2205 | number_string_cache()->set(hash * 2 + 1, *string); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2206 | } |
| 2207 | |
| 2208 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2209 | Handle<String> Factory::NumberToString(Handle<Object> number, |
| 2210 | bool check_number_string_cache) { |
| 2211 | isolate()->counters()->number_to_string_runtime()->Increment(); |
| 2212 | if (check_number_string_cache) { |
| 2213 | Handle<Object> cached = GetNumberStringCache(number); |
| 2214 | if (!cached->IsUndefined()) return Handle<String>::cast(cached); |
| 2215 | } |
| 2216 | |
| 2217 | char arr[100]; |
| 2218 | Vector<char> buffer(arr, arraysize(arr)); |
| 2219 | const char* str; |
| 2220 | if (number->IsSmi()) { |
| 2221 | int num = Handle<Smi>::cast(number)->value(); |
| 2222 | str = IntToCString(num, buffer); |
| 2223 | } else { |
| 2224 | double num = Handle<HeapNumber>::cast(number)->value(); |
| 2225 | str = DoubleToCString(num, buffer); |
| 2226 | } |
| 2227 | |
| 2228 | // We tenure the allocated string since it is referenced from the |
| 2229 | // number-string cache which lives in the old space. |
| 2230 | Handle<String> js_string = NewStringFromAsciiChecked(str, TENURED); |
| 2231 | SetNumberStringCache(number, js_string); |
| 2232 | return js_string; |
| 2233 | } |
| 2234 | |
| 2235 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2236 | Handle<DebugInfo> Factory::NewDebugInfo(Handle<SharedFunctionInfo> shared) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2237 | // Allocate initial fixed array for active break points before allocating the |
| 2238 | // debug info object to avoid allocation while setting up the debug info |
| 2239 | // object. |
| 2240 | Handle<FixedArray> break_points( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2241 | NewFixedArray(DebugInfo::kEstimatedNofBreakPointsInFunction)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2242 | |
| 2243 | // Create and set up the debug info object. Debug info contains function, a |
| 2244 | // copy of the original code, the executing code and initial fixed array for |
| 2245 | // active break points. |
| 2246 | Handle<DebugInfo> debug_info = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2247 | Handle<DebugInfo>::cast(NewStruct(DEBUG_INFO_TYPE)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2248 | debug_info->set_shared(*shared); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2249 | if (shared->HasBytecodeArray()) { |
| 2250 | // Create a copy for debugging. |
| 2251 | Handle<BytecodeArray> original(shared->bytecode_array(), isolate()); |
| 2252 | Handle<BytecodeArray> copy = CopyBytecodeArray(original); |
| 2253 | debug_info->set_abstract_code(AbstractCode::cast(*copy)); |
| 2254 | } else { |
| 2255 | debug_info->set_abstract_code(AbstractCode::cast(shared->code())); |
| 2256 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2257 | debug_info->set_break_points(*break_points); |
| 2258 | |
| 2259 | // Link debug info to function. |
| 2260 | shared->set_debug_info(*debug_info); |
| 2261 | |
| 2262 | return debug_info; |
| 2263 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2264 | |
| 2265 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2266 | Handle<JSObject> Factory::NewArgumentsObject(Handle<JSFunction> callee, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2267 | int length) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2268 | bool strict_mode_callee = is_strict(callee->shared()->language_mode()) || |
| 2269 | !callee->shared()->has_simple_parameters(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2270 | Handle<Map> map = strict_mode_callee ? isolate()->strict_arguments_map() |
| 2271 | : isolate()->sloppy_arguments_map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2272 | AllocationSiteUsageContext context(isolate(), Handle<AllocationSite>(), |
| 2273 | false); |
| 2274 | DCHECK(!isolate()->has_pending_exception()); |
| 2275 | Handle<JSObject> result = NewJSObjectFromMap(map); |
| 2276 | Handle<Smi> value(Smi::FromInt(length), isolate()); |
| 2277 | Object::SetProperty(result, length_string(), value, STRICT).Assert(); |
| 2278 | if (!strict_mode_callee) { |
| 2279 | Object::SetProperty(result, callee_string(), callee, STRICT).Assert(); |
| 2280 | } |
| 2281 | return result; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2282 | } |
| 2283 | |
| 2284 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2285 | Handle<JSWeakMap> Factory::NewJSWeakMap() { |
| 2286 | // TODO(adamk): Currently the map is only created three times per |
| 2287 | // isolate. If it's created more often, the map should be moved into the |
| 2288 | // strong root list. |
| 2289 | Handle<Map> map = NewMap(JS_WEAK_MAP_TYPE, JSWeakMap::kSize); |
| 2290 | return Handle<JSWeakMap>::cast(NewJSObjectFromMap(map)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2291 | } |
| 2292 | |
| 2293 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2294 | Handle<Map> Factory::ObjectLiteralMapFromCache(Handle<Context> context, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2295 | int number_of_properties, |
| 2296 | bool* is_result_from_cache) { |
| 2297 | const int kMapCacheSize = 128; |
| 2298 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2299 | // We do not cache maps for too many properties or when running builtin code. |
| 2300 | if (number_of_properties > kMapCacheSize || |
| 2301 | isolate()->bootstrapper()->IsActive()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2302 | *is_result_from_cache = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2303 | Handle<Map> map = Map::Create(isolate(), number_of_properties); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2304 | return map; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2305 | } |
| 2306 | *is_result_from_cache = true; |
| 2307 | if (number_of_properties == 0) { |
| 2308 | // Reuse the initial map of the Object function if the literal has no |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 2309 | // predeclared properties. |
| 2310 | return handle(context->object_function()->initial_map(), isolate()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2311 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2312 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2313 | int cache_index = number_of_properties - 1; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 2314 | Handle<Object> maybe_cache(context->map_cache(), isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2315 | if (maybe_cache->IsUndefined()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2316 | // Allocate the new map cache for the native context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2317 | maybe_cache = NewFixedArray(kMapCacheSize, TENURED); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 2318 | context->set_map_cache(*maybe_cache); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2319 | } else { |
| 2320 | // Check to see whether there is a matching element in the cache. |
| 2321 | Handle<FixedArray> cache = Handle<FixedArray>::cast(maybe_cache); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2322 | Object* result = cache->get(cache_index); |
| 2323 | if (result->IsWeakCell()) { |
| 2324 | WeakCell* cell = WeakCell::cast(result); |
| 2325 | if (!cell->cleared()) { |
| 2326 | return handle(Map::cast(cell->value()), isolate()); |
| 2327 | } |
| 2328 | } |
| 2329 | } |
| 2330 | // Create a new map and add it to the cache. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2331 | Handle<FixedArray> cache = Handle<FixedArray>::cast(maybe_cache); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2332 | Handle<Map> map = Map::Create(isolate(), number_of_properties); |
| 2333 | Handle<WeakCell> cell = NewWeakCell(map); |
| 2334 | cache->set(cache_index, *cell); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2335 | return map; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2336 | } |
| 2337 | |
| 2338 | |
| 2339 | void Factory::SetRegExpAtomData(Handle<JSRegExp> regexp, |
| 2340 | JSRegExp::Type type, |
| 2341 | Handle<String> source, |
| 2342 | JSRegExp::Flags flags, |
| 2343 | Handle<Object> data) { |
| 2344 | Handle<FixedArray> store = NewFixedArray(JSRegExp::kAtomDataSize); |
| 2345 | |
| 2346 | store->set(JSRegExp::kTagIndex, Smi::FromInt(type)); |
| 2347 | store->set(JSRegExp::kSourceIndex, *source); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2348 | store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2349 | store->set(JSRegExp::kAtomPatternIndex, *data); |
| 2350 | regexp->set_data(*store); |
| 2351 | } |
| 2352 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2353 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2354 | void Factory::SetRegExpIrregexpData(Handle<JSRegExp> regexp, |
| 2355 | JSRegExp::Type type, |
| 2356 | Handle<String> source, |
| 2357 | JSRegExp::Flags flags, |
| 2358 | int capture_count) { |
| 2359 | Handle<FixedArray> store = NewFixedArray(JSRegExp::kIrregexpDataSize); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2360 | Smi* uninitialized = Smi::FromInt(JSRegExp::kUninitializedValue); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2361 | store->set(JSRegExp::kTagIndex, Smi::FromInt(type)); |
| 2362 | store->set(JSRegExp::kSourceIndex, *source); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2363 | store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2364 | store->set(JSRegExp::kIrregexpLatin1CodeIndex, uninitialized); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2365 | store->set(JSRegExp::kIrregexpUC16CodeIndex, uninitialized); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2366 | store->set(JSRegExp::kIrregexpLatin1CodeSavedIndex, uninitialized); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2367 | store->set(JSRegExp::kIrregexpUC16CodeSavedIndex, uninitialized); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2368 | store->set(JSRegExp::kIrregexpMaxRegisterCountIndex, Smi::FromInt(0)); |
| 2369 | store->set(JSRegExp::kIrregexpCaptureCountIndex, |
| 2370 | Smi::FromInt(capture_count)); |
| 2371 | regexp->set_data(*store); |
| 2372 | } |
| 2373 | |
| 2374 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2375 | Handle<Object> Factory::GlobalConstantFor(Handle<Name> name) { |
| 2376 | if (Name::Equals(name, undefined_string())) return undefined_value(); |
| 2377 | if (Name::Equals(name, nan_string())) return nan_value(); |
| 2378 | if (Name::Equals(name, infinity_string())) return infinity_value(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2379 | return Handle<Object>::null(); |
| 2380 | } |
| 2381 | |
| 2382 | |
| 2383 | Handle<Object> Factory::ToBoolean(bool value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2384 | return value ? true_value() : false_value(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2385 | } |
| 2386 | |
| 2387 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2388 | } // namespace internal |
| 2389 | } // namespace v8 |