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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // Review notes: | 5 // Review notes: |
6 // | 6 // |
7 // - The use of macros in these inline functions may seem superfluous | 7 // - The use of macros in these inline functions may seem superfluous |
8 // but it is absolutely needed to make sure gcc generates optimal | 8 // but it is absolutely needed to make sure gcc generates optimal |
9 // code. gcc is not happy when attempting to inline too deep. | 9 // code. gcc is not happy when attempting to inline too deep. |
10 // | 10 // |
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155 bool HeapObject::Is##Type() const { return map() == GetHeap()->type##_map(); } | 155 bool HeapObject::Is##Type() const { return map() == GetHeap()->type##_map(); } |
156 SIMD128_TYPES(SIMD128_TYPE_CHECKER) | 156 SIMD128_TYPES(SIMD128_TYPE_CHECKER) |
157 #undef SIMD128_TYPE_CHECKER | 157 #undef SIMD128_TYPE_CHECKER |
158 | 158 |
159 // TODO(cbruni): remove once all the isolate-based versions are in place. | 159 // TODO(cbruni): remove once all the isolate-based versions are in place. |
160 #define IS_TYPE_FUNCTION_DEF(type_) \ | 160 #define IS_TYPE_FUNCTION_DEF(type_) \ |
161 bool Object::Is##type_() const { \ | 161 bool Object::Is##type_() const { \ |
162 return IsHeapObject() && HeapObject::cast(this)->Is##type_(); \ | 162 return IsHeapObject() && HeapObject::cast(this)->Is##type_(); \ |
163 } | 163 } |
164 HEAP_OBJECT_TYPE_LIST(IS_TYPE_FUNCTION_DEF) | 164 HEAP_OBJECT_TYPE_LIST(IS_TYPE_FUNCTION_DEF) |
165 #undef IS_TYPE_FUNCTION_DEF | |
166 | |
167 #define IS_TYPE_FUNCTION_DEF(Type, Value) \ | |
168 bool Object::Is##Type(Isolate* isolate) const { \ | |
169 return this == isolate->heap()->Value(); \ | |
170 } \ | |
171 bool HeapObject::Is##Type(Isolate* isolate) const { \ | |
172 return this == isolate->heap()->Value(); \ | |
173 } | |
174 ODDBALL_LIST(IS_TYPE_FUNCTION_DEF) | 165 ODDBALL_LIST(IS_TYPE_FUNCTION_DEF) |
175 #undef IS_TYPE_FUNCTION_DEF | 166 #undef IS_TYPE_FUNCTION_DEF |
176 | 167 |
| 168 bool HeapObject::IsTheHole(Isolate* isolate) const { |
| 169 return this == isolate->heap()->the_hole_value(); |
| 170 } |
| 171 |
| 172 bool HeapObject::IsUndefined(Isolate* isolate) const { |
| 173 return this == isolate->heap()->undefined_value(); |
| 174 } |
| 175 |
| 176 bool Object::IsTheHole(Isolate* isolate) const { |
| 177 return this == isolate->heap()->the_hole_value(); |
| 178 } |
| 179 |
| 180 bool Object::IsUndefined(Isolate* isolate) const { |
| 181 return this == isolate->heap()->undefined_value(); |
| 182 } |
| 183 |
177 bool HeapObject::IsString() const { | 184 bool HeapObject::IsString() const { |
178 return map()->instance_type() < FIRST_NONSTRING_TYPE; | 185 return map()->instance_type() < FIRST_NONSTRING_TYPE; |
179 } | 186 } |
180 | 187 |
181 bool HeapObject::IsName() const { | 188 bool HeapObject::IsName() const { |
182 return map()->instance_type() <= LAST_NAME_TYPE; | 189 return map()->instance_type() <= LAST_NAME_TYPE; |
183 } | 190 } |
184 | 191 |
185 bool HeapObject::IsUniqueName() const { | 192 bool HeapObject::IsUniqueName() const { |
186 return IsInternalizedString() || IsSymbol(); | 193 return IsInternalizedString() || IsSymbol(); |
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287 } else { | 294 } else { |
288 if (filter & SKIP_STRINGS) return true; | 295 if (filter & SKIP_STRINGS) return true; |
289 } | 296 } |
290 return false; | 297 return false; |
291 } | 298 } |
292 | 299 |
293 | 300 |
294 Handle<Object> Object::NewStorageFor(Isolate* isolate, | 301 Handle<Object> Object::NewStorageFor(Isolate* isolate, |
295 Handle<Object> object, | 302 Handle<Object> object, |
296 Representation representation) { | 303 Representation representation) { |
297 if (representation.IsSmi() && object->IsUninitialized(isolate)) { | 304 if (representation.IsSmi() && object->IsUninitialized()) { |
298 return handle(Smi::FromInt(0), isolate); | 305 return handle(Smi::FromInt(0), isolate); |
299 } | 306 } |
300 if (!representation.IsDouble()) return object; | 307 if (!representation.IsDouble()) return object; |
301 double value; | 308 double value; |
302 if (object->IsUninitialized(isolate)) { | 309 if (object->IsUninitialized()) { |
303 value = 0; | 310 value = 0; |
304 } else if (object->IsMutableHeapNumber()) { | 311 } else if (object->IsMutableHeapNumber()) { |
305 value = HeapNumber::cast(*object)->value(); | 312 value = HeapNumber::cast(*object)->value(); |
306 } else { | 313 } else { |
307 value = object->Number(); | 314 value = object->Number(); |
308 } | 315 } |
309 return isolate->factory()->NewHeapNumber(value, MUTABLE); | 316 return isolate->factory()->NewHeapNumber(value, MUTABLE); |
310 } | 317 } |
311 | 318 |
312 | 319 |
313 Handle<Object> Object::WrapForRead(Isolate* isolate, | 320 Handle<Object> Object::WrapForRead(Isolate* isolate, |
314 Handle<Object> object, | 321 Handle<Object> object, |
315 Representation representation) { | 322 Representation representation) { |
316 DCHECK(!object->IsUninitialized(isolate)); | 323 DCHECK(!object->IsUninitialized()); |
317 if (!representation.IsDouble()) { | 324 if (!representation.IsDouble()) { |
318 DCHECK(object->FitsRepresentation(representation)); | 325 DCHECK(object->FitsRepresentation(representation)); |
319 return object; | 326 return object; |
320 } | 327 } |
321 return isolate->factory()->NewHeapNumber(HeapNumber::cast(*object)->value()); | 328 return isolate->factory()->NewHeapNumber(HeapNumber::cast(*object)->value()); |
322 } | 329 } |
323 | 330 |
324 | 331 |
325 StringShape::StringShape(const String* str) | 332 StringShape::StringShape(const String* str) |
326 : type_(str->map()->instance_type()) { | 333 : type_(str->map()->instance_type()) { |
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941 #define MAKE_STRUCT_PREDICATE(NAME, Name, name) \ | 948 #define MAKE_STRUCT_PREDICATE(NAME, Name, name) \ |
942 bool Object::Is##Name() const { \ | 949 bool Object::Is##Name() const { \ |
943 return IsHeapObject() && HeapObject::cast(this)->Is##Name(); \ | 950 return IsHeapObject() && HeapObject::cast(this)->Is##Name(); \ |
944 } \ | 951 } \ |
945 bool HeapObject::Is##Name() const { \ | 952 bool HeapObject::Is##Name() const { \ |
946 return map()->instance_type() == NAME##_TYPE; \ | 953 return map()->instance_type() == NAME##_TYPE; \ |
947 } | 954 } |
948 STRUCT_LIST(MAKE_STRUCT_PREDICATE) | 955 STRUCT_LIST(MAKE_STRUCT_PREDICATE) |
949 #undef MAKE_STRUCT_PREDICATE | 956 #undef MAKE_STRUCT_PREDICATE |
950 | 957 |
| 958 #define MAKE_ODDBALL_PREDICATE(Name) \ |
| 959 bool HeapObject::Is##Name() const { \ |
| 960 return IsOddball() && Oddball::cast(this)->kind() == Oddball::k##Name; \ |
| 961 } |
| 962 ODDBALL_LIST(MAKE_ODDBALL_PREDICATE) |
| 963 |
| 964 #undef MAKE_ODDBALL_PREDICATE |
951 double Object::Number() const { | 965 double Object::Number() const { |
952 DCHECK(IsNumber()); | 966 DCHECK(IsNumber()); |
953 return IsSmi() | 967 return IsSmi() |
954 ? static_cast<double>(reinterpret_cast<const Smi*>(this)->value()) | 968 ? static_cast<double>(reinterpret_cast<const Smi*>(this)->value()) |
955 : reinterpret_cast<const HeapNumber*>(this)->value(); | 969 : reinterpret_cast<const HeapNumber*>(this)->value(); |
956 } | 970 } |
957 | 971 |
958 | 972 |
959 bool Object::IsNaN() const { | 973 bool Object::IsNaN() const { |
960 return this->IsHeapNumber() && std::isnan(HeapNumber::cast(this)->value()); | 974 return this->IsHeapNumber() && std::isnan(HeapNumber::cast(this)->value()); |
961 } | 975 } |
962 | 976 |
963 | 977 |
964 bool Object::IsMinusZero() const { | 978 bool Object::IsMinusZero() const { |
965 return this->IsHeapNumber() && | 979 return this->IsHeapNumber() && |
966 i::IsMinusZero(HeapNumber::cast(this)->value()); | 980 i::IsMinusZero(HeapNumber::cast(this)->value()); |
967 } | 981 } |
968 | 982 |
969 | 983 |
970 Representation Object::OptimalRepresentation() { | 984 Representation Object::OptimalRepresentation() { |
971 if (!FLAG_track_fields) return Representation::Tagged(); | 985 if (!FLAG_track_fields) return Representation::Tagged(); |
972 if (IsSmi()) { | 986 if (IsSmi()) { |
973 return Representation::Smi(); | 987 return Representation::Smi(); |
974 } else if (FLAG_track_double_fields && IsHeapNumber()) { | 988 } else if (FLAG_track_double_fields && IsHeapNumber()) { |
975 return Representation::Double(); | 989 return Representation::Double(); |
976 } else if (FLAG_track_computed_fields && | 990 } else if (FLAG_track_computed_fields && IsUninitialized()) { |
977 IsUninitialized(HeapObject::cast(this)->GetIsolate())) { | |
978 return Representation::None(); | 991 return Representation::None(); |
979 } else if (FLAG_track_heap_object_fields) { | 992 } else if (FLAG_track_heap_object_fields) { |
980 DCHECK(IsHeapObject()); | 993 DCHECK(IsHeapObject()); |
981 return Representation::HeapObject(); | 994 return Representation::HeapObject(); |
982 } else { | 995 } else { |
983 return Representation::Tagged(); | 996 return Representation::Tagged(); |
984 } | 997 } |
985 } | 998 } |
986 | 999 |
987 | 1000 |
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2181 } | 2194 } |
2182 } | 2195 } |
2183 | 2196 |
2184 void JSObject::WriteToField(int descriptor, PropertyDetails details, | 2197 void JSObject::WriteToField(int descriptor, PropertyDetails details, |
2185 Object* value) { | 2198 Object* value) { |
2186 DCHECK(details.type() == DATA); | 2199 DCHECK(details.type() == DATA); |
2187 DisallowHeapAllocation no_gc; | 2200 DisallowHeapAllocation no_gc; |
2188 FieldIndex index = FieldIndex::ForDescriptor(map(), descriptor); | 2201 FieldIndex index = FieldIndex::ForDescriptor(map(), descriptor); |
2189 if (details.representation().IsDouble()) { | 2202 if (details.representation().IsDouble()) { |
2190 // Nothing more to be done. | 2203 // Nothing more to be done. |
2191 if (value->IsUninitialized(this->GetIsolate())) { | 2204 if (value->IsUninitialized()) return; |
2192 return; | |
2193 } | |
2194 if (IsUnboxedDoubleField(index)) { | 2205 if (IsUnboxedDoubleField(index)) { |
2195 RawFastDoublePropertyAtPut(index, value->Number()); | 2206 RawFastDoublePropertyAtPut(index, value->Number()); |
2196 } else { | 2207 } else { |
2197 HeapNumber* box = HeapNumber::cast(RawFastPropertyAt(index)); | 2208 HeapNumber* box = HeapNumber::cast(RawFastPropertyAt(index)); |
2198 DCHECK(box->IsMutableHeapNumber()); | 2209 DCHECK(box->IsMutableHeapNumber()); |
2199 box->set_value(value->Number()); | 2210 box->set_value(value->Number()); |
2200 } | 2211 } |
2201 } else { | 2212 } else { |
2202 RawFastPropertyAtPut(index, value); | 2213 RawFastPropertyAtPut(index, value); |
2203 } | 2214 } |
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2280 return Object::ToUint32(index) && *index != kMaxUInt32; | 2291 return Object::ToUint32(index) && *index != kMaxUInt32; |
2281 } | 2292 } |
2282 | 2293 |
2283 | 2294 |
2284 void Object::VerifyApiCallResultType() { | 2295 void Object::VerifyApiCallResultType() { |
2285 #if DEBUG | 2296 #if DEBUG |
2286 if (IsSmi()) return; | 2297 if (IsSmi()) return; |
2287 DCHECK(IsHeapObject()); | 2298 DCHECK(IsHeapObject()); |
2288 Isolate* isolate = HeapObject::cast(this)->GetIsolate(); | 2299 Isolate* isolate = HeapObject::cast(this)->GetIsolate(); |
2289 if (!(IsString() || IsSymbol() || IsJSReceiver() || IsHeapNumber() || | 2300 if (!(IsString() || IsSymbol() || IsJSReceiver() || IsHeapNumber() || |
2290 IsSimd128Value() || IsUndefined(isolate) || IsTrue(isolate) || | 2301 IsSimd128Value() || IsUndefined(isolate) || IsTrue() || IsFalse() || |
2291 IsFalse(isolate) || IsNull(isolate))) { | 2302 IsNull())) { |
2292 FATAL("API call returned invalid object"); | 2303 FATAL("API call returned invalid object"); |
2293 } | 2304 } |
2294 #endif // DEBUG | 2305 #endif // DEBUG |
2295 } | 2306 } |
2296 | 2307 |
2297 | 2308 |
2298 Object* FixedArray::get(int index) const { | 2309 Object* FixedArray::get(int index) const { |
2299 SLOW_DCHECK(index >= 0 && index < this->length()); | 2310 SLOW_DCHECK(index >= 0 && index < this->length()); |
2300 return READ_FIELD(this, kHeaderSize + index * kPointerSize); | 2311 return READ_FIELD(this, kHeaderSize + index * kPointerSize); |
2301 } | 2312 } |
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5276 BytecodeArray* AbstractCode::GetBytecodeArray() { | 5287 BytecodeArray* AbstractCode::GetBytecodeArray() { |
5277 return BytecodeArray::cast(this); | 5288 return BytecodeArray::cast(this); |
5278 } | 5289 } |
5279 | 5290 |
5280 Object* Map::prototype() const { | 5291 Object* Map::prototype() const { |
5281 return READ_FIELD(this, kPrototypeOffset); | 5292 return READ_FIELD(this, kPrototypeOffset); |
5282 } | 5293 } |
5283 | 5294 |
5284 | 5295 |
5285 void Map::set_prototype(Object* value, WriteBarrierMode mode) { | 5296 void Map::set_prototype(Object* value, WriteBarrierMode mode) { |
5286 DCHECK(value->IsNull(GetIsolate()) || value->IsJSReceiver()); | 5297 DCHECK(value->IsNull() || value->IsJSReceiver()); |
5287 WRITE_FIELD(this, kPrototypeOffset, value); | 5298 WRITE_FIELD(this, kPrototypeOffset, value); |
5288 CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kPrototypeOffset, value, mode); | 5299 CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kPrototypeOffset, value, mode); |
5289 } | 5300 } |
5290 | 5301 |
5291 | 5302 |
5292 LayoutDescriptor* Map::layout_descriptor_gc_safe() { | 5303 LayoutDescriptor* Map::layout_descriptor_gc_safe() { |
5293 Object* layout_desc = READ_FIELD(this, kLayoutDecriptorOffset); | 5304 Object* layout_desc = READ_FIELD(this, kLayoutDecriptorOffset); |
5294 return LayoutDescriptor::cast_gc_safe(layout_desc); | 5305 return LayoutDescriptor::cast_gc_safe(layout_desc); |
5295 } | 5306 } |
5296 | 5307 |
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7305 void AccessorPair::set(AccessorComponent component, Object* value) { | 7316 void AccessorPair::set(AccessorComponent component, Object* value) { |
7306 if (component == ACCESSOR_GETTER) { | 7317 if (component == ACCESSOR_GETTER) { |
7307 set_getter(value); | 7318 set_getter(value); |
7308 } else { | 7319 } else { |
7309 set_setter(value); | 7320 set_setter(value); |
7310 } | 7321 } |
7311 } | 7322 } |
7312 | 7323 |
7313 | 7324 |
7314 void AccessorPair::SetComponents(Object* getter, Object* setter) { | 7325 void AccessorPair::SetComponents(Object* getter, Object* setter) { |
7315 Isolate* isolate = GetIsolate(); | 7326 if (!getter->IsNull()) set_getter(getter); |
7316 if (!getter->IsNull(isolate)) set_getter(getter); | 7327 if (!setter->IsNull()) set_setter(setter); |
7317 if (!setter->IsNull(isolate)) set_setter(setter); | |
7318 } | 7328 } |
7319 | 7329 |
7320 | 7330 |
7321 bool AccessorPair::Equals(AccessorPair* pair) { | 7331 bool AccessorPair::Equals(AccessorPair* pair) { |
7322 return (this == pair) || pair->Equals(getter(), setter()); | 7332 return (this == pair) || pair->Equals(getter(), setter()); |
7323 } | 7333 } |
7324 | 7334 |
7325 | 7335 |
7326 bool AccessorPair::Equals(Object* getter_value, Object* setter_value) { | 7336 bool AccessorPair::Equals(Object* getter_value, Object* setter_value) { |
7327 return (getter() == getter_value) && (setter() == setter_value); | 7337 return (getter() == getter_value) && (setter() == setter_value); |
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7903 #undef WRITE_INT64_FIELD | 7913 #undef WRITE_INT64_FIELD |
7904 #undef READ_BYTE_FIELD | 7914 #undef READ_BYTE_FIELD |
7905 #undef WRITE_BYTE_FIELD | 7915 #undef WRITE_BYTE_FIELD |
7906 #undef NOBARRIER_READ_BYTE_FIELD | 7916 #undef NOBARRIER_READ_BYTE_FIELD |
7907 #undef NOBARRIER_WRITE_BYTE_FIELD | 7917 #undef NOBARRIER_WRITE_BYTE_FIELD |
7908 | 7918 |
7909 } // namespace internal | 7919 } // namespace internal |
7910 } // namespace v8 | 7920 } // namespace v8 |
7911 | 7921 |
7912 #endif // V8_OBJECTS_INL_H_ | 7922 #endif // V8_OBJECTS_INL_H_ |
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