Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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/v8.h" |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 7 | #include "src/accessors.h" |
| 8 | #include "src/api.h" |
| 9 | #include "src/compiler.h" |
| 10 | #include "src/contexts.h" |
| 11 | #include "src/deoptimizer.h" |
| 12 | #include "src/execution.h" |
| 13 | #include "src/factory.h" |
| 14 | #include "src/frames-inl.h" |
| 15 | #include "src/isolate.h" |
| 16 | #include "src/list-inl.h" |
| 17 | #include "src/property-details.h" |
| 18 | #include "src/prototype.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 19 | |
| 20 | namespace v8 { |
| 21 | namespace internal { |
| 22 | |
| 23 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 24 | Handle<AccessorInfo> Accessors::MakeAccessor( |
| 25 | Isolate* isolate, |
| 26 | Handle<Name> name, |
| 27 | AccessorNameGetterCallback getter, |
| 28 | AccessorNameSetterCallback setter, |
| 29 | PropertyAttributes attributes) { |
| 30 | Factory* factory = isolate->factory(); |
| 31 | Handle<ExecutableAccessorInfo> info = factory->NewExecutableAccessorInfo(); |
| 32 | info->set_property_attributes(attributes); |
| 33 | info->set_all_can_read(false); |
| 34 | info->set_all_can_write(false); |
| 35 | info->set_name(*name); |
| 36 | Handle<Object> get = v8::FromCData(isolate, getter); |
| 37 | Handle<Object> set = v8::FromCData(isolate, setter); |
| 38 | info->set_getter(*get); |
| 39 | info->set_setter(*set); |
| 40 | return info; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 41 | } |
| 42 | |
| 43 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 44 | Handle<ExecutableAccessorInfo> Accessors::CloneAccessor( |
| 45 | Isolate* isolate, |
| 46 | Handle<ExecutableAccessorInfo> accessor) { |
| 47 | Factory* factory = isolate->factory(); |
| 48 | Handle<ExecutableAccessorInfo> info = factory->NewExecutableAccessorInfo(); |
| 49 | info->set_name(accessor->name()); |
| 50 | info->set_flag(accessor->flag()); |
| 51 | info->set_expected_receiver_type(accessor->expected_receiver_type()); |
| 52 | info->set_getter(accessor->getter()); |
| 53 | info->set_setter(accessor->setter()); |
| 54 | info->set_data(accessor->data()); |
| 55 | return info; |
| 56 | } |
| 57 | |
| 58 | |
| 59 | template <class C> |
| 60 | static C* FindInstanceOf(Isolate* isolate, Object* obj) { |
| 61 | for (PrototypeIterator iter(isolate, obj, |
| 62 | PrototypeIterator::START_AT_RECEIVER); |
| 63 | !iter.IsAtEnd(); iter.Advance()) { |
| 64 | if (Is<C>(iter.GetCurrent())) return C::cast(iter.GetCurrent()); |
| 65 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 66 | return NULL; |
| 67 | } |
| 68 | |
| 69 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 70 | static V8_INLINE bool CheckForName(Handle<Name> name, |
| 71 | Handle<String> property_name, |
| 72 | int offset, |
| 73 | int* object_offset) { |
| 74 | if (Name::Equals(name, property_name)) { |
| 75 | *object_offset = offset; |
| 76 | return true; |
| 77 | } |
| 78 | return false; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 82 | // Returns true for properties that are accessors to object fields. |
| 83 | // If true, *object_offset contains offset of object field. |
| 84 | template <class T> |
| 85 | bool Accessors::IsJSObjectFieldAccessor(typename T::TypeHandle type, |
| 86 | Handle<Name> name, |
| 87 | int* object_offset) { |
| 88 | Isolate* isolate = name->GetIsolate(); |
| 89 | |
| 90 | if (type->Is(T::String())) { |
| 91 | return CheckForName(name, isolate->factory()->length_string(), |
| 92 | String::kLengthOffset, object_offset); |
| 93 | } |
| 94 | |
| 95 | if (!type->IsClass()) return false; |
| 96 | Handle<Map> map = type->AsClass()->Map(); |
| 97 | |
| 98 | switch (map->instance_type()) { |
| 99 | case JS_ARRAY_TYPE: |
| 100 | return |
| 101 | CheckForName(name, isolate->factory()->length_string(), |
| 102 | JSArray::kLengthOffset, object_offset); |
| 103 | case JS_TYPED_ARRAY_TYPE: |
| 104 | return |
| 105 | CheckForName(name, isolate->factory()->length_string(), |
| 106 | JSTypedArray::kLengthOffset, object_offset) || |
| 107 | CheckForName(name, isolate->factory()->byte_length_string(), |
| 108 | JSTypedArray::kByteLengthOffset, object_offset) || |
| 109 | CheckForName(name, isolate->factory()->byte_offset_string(), |
| 110 | JSTypedArray::kByteOffsetOffset, object_offset); |
| 111 | case JS_ARRAY_BUFFER_TYPE: |
| 112 | return |
| 113 | CheckForName(name, isolate->factory()->byte_length_string(), |
| 114 | JSArrayBuffer::kByteLengthOffset, object_offset); |
| 115 | case JS_DATA_VIEW_TYPE: |
| 116 | return |
| 117 | CheckForName(name, isolate->factory()->byte_length_string(), |
| 118 | JSDataView::kByteLengthOffset, object_offset) || |
| 119 | CheckForName(name, isolate->factory()->byte_offset_string(), |
| 120 | JSDataView::kByteOffsetOffset, object_offset); |
| 121 | default: |
| 122 | return false; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | |
| 127 | template |
| 128 | bool Accessors::IsJSObjectFieldAccessor<Type>(Type* type, |
| 129 | Handle<Name> name, |
| 130 | int* object_offset); |
| 131 | |
| 132 | |
| 133 | template |
| 134 | bool Accessors::IsJSObjectFieldAccessor<HeapType>(Handle<HeapType> type, |
| 135 | Handle<Name> name, |
| 136 | int* object_offset); |
| 137 | |
| 138 | |
| 139 | bool SetPropertyOnInstanceIfInherited( |
| 140 | Isolate* isolate, const v8::PropertyCallbackInfo<void>& info, |
| 141 | v8::Local<v8::Name> name, Handle<Object> value) { |
| 142 | Handle<Object> holder = Utils::OpenHandle(*info.Holder()); |
| 143 | Handle<Object> receiver = Utils::OpenHandle(*info.This()); |
| 144 | if (*holder == *receiver) return false; |
| 145 | if (receiver->IsJSObject()) { |
| 146 | Handle<JSObject> object = Handle<JSObject>::cast(receiver); |
| 147 | // This behaves sloppy since we lost the actual strict-mode. |
| 148 | // TODO(verwaest): Fix by making ExecutableAccessorInfo behave like data |
| 149 | // properties. |
| 150 | if (!object->map()->is_extensible()) return true; |
| 151 | JSObject::SetOwnPropertyIgnoreAttributes(object, Utils::OpenHandle(*name), |
| 152 | value, NONE).Check(); |
| 153 | } |
| 154 | return true; |
| 155 | } |
| 156 | |
| 157 | |
| 158 | // |
| 159 | // Accessors::ArgumentsIterator |
| 160 | // |
| 161 | |
| 162 | |
| 163 | void Accessors::ArgumentsIteratorGetter( |
| 164 | v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 165 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 166 | DisallowHeapAllocation no_allocation; |
| 167 | HandleScope scope(isolate); |
| 168 | Object* result = isolate->native_context()->array_values_iterator(); |
| 169 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
| 170 | } |
| 171 | |
| 172 | |
| 173 | void Accessors::ArgumentsIteratorSetter( |
| 174 | v8::Local<v8::Name> name, v8::Local<v8::Value> val, |
| 175 | const v8::PropertyCallbackInfo<void>& info) { |
| 176 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 177 | HandleScope scope(isolate); |
| 178 | Handle<JSObject> object = Utils::OpenHandle(*info.This()); |
| 179 | Handle<Object> value = Utils::OpenHandle(*val); |
| 180 | |
| 181 | if (SetPropertyOnInstanceIfInherited(isolate, info, name, value)) return; |
| 182 | |
| 183 | LookupIterator it(object, Utils::OpenHandle(*name)); |
| 184 | CHECK_EQ(LookupIterator::ACCESSOR, it.state()); |
| 185 | DCHECK(it.HolderIsReceiverOrHiddenPrototype()); |
| 186 | Object::SetDataProperty(&it, value); |
| 187 | } |
| 188 | |
| 189 | |
| 190 | Handle<AccessorInfo> Accessors::ArgumentsIteratorInfo( |
| 191 | Isolate* isolate, PropertyAttributes attributes) { |
| 192 | Handle<Name> name(isolate->native_context()->iterator_symbol(), isolate); |
| 193 | return MakeAccessor(isolate, name, &ArgumentsIteratorGetter, |
| 194 | &ArgumentsIteratorSetter, attributes); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | |
| 198 | // |
| 199 | // Accessors::ArrayLength |
| 200 | // |
| 201 | |
| 202 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 203 | // The helper function will 'flatten' Number objects. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 204 | Handle<Object> Accessors::FlattenNumber(Isolate* isolate, |
| 205 | Handle<Object> value) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 206 | if (value->IsNumber() || !value->IsJSValue()) return value; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 207 | Handle<JSValue> wrapper = Handle<JSValue>::cast(value); |
| 208 | DCHECK(wrapper->GetIsolate()->native_context()->number_function()-> |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 209 | has_initial_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 210 | if (wrapper->map() == isolate->number_function()->initial_map()) { |
| 211 | return handle(wrapper->value(), isolate); |
| 212 | } |
| 213 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 214 | return value; |
| 215 | } |
| 216 | |
| 217 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 218 | void Accessors::ArrayLengthGetter( |
| 219 | v8::Local<v8::Name> name, |
| 220 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 221 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 222 | DisallowHeapAllocation no_allocation; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 223 | HandleScope scope(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 224 | JSArray* holder = JSArray::cast(*Utils::OpenHandle(*info.Holder())); |
| 225 | Object* result = holder->length(); |
| 226 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 230 | void Accessors::ArrayLengthSetter( |
| 231 | v8::Local<v8::Name> name, |
| 232 | v8::Local<v8::Value> val, |
| 233 | const v8::PropertyCallbackInfo<void>& info) { |
| 234 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 235 | HandleScope scope(isolate); |
| 236 | Handle<JSObject> object = Utils::OpenHandle(*info.This()); |
| 237 | Handle<Object> value = Utils::OpenHandle(*val); |
| 238 | if (SetPropertyOnInstanceIfInherited(isolate, info, name, value)) { |
| 239 | return; |
| 240 | } |
| 241 | |
| 242 | value = FlattenNumber(isolate, value); |
| 243 | |
| 244 | Handle<JSArray> array_handle = Handle<JSArray>::cast(object); |
| 245 | MaybeHandle<Object> maybe; |
| 246 | Handle<Object> uint32_v; |
| 247 | maybe = Execution::ToUint32(isolate, value); |
| 248 | if (!maybe.ToHandle(&uint32_v)) { |
| 249 | isolate->OptionalRescheduleException(false); |
| 250 | return; |
| 251 | } |
| 252 | Handle<Object> number_v; |
| 253 | maybe = Execution::ToNumber(isolate, value); |
| 254 | if (!maybe.ToHandle(&number_v)) { |
| 255 | isolate->OptionalRescheduleException(false); |
| 256 | return; |
| 257 | } |
| 258 | |
| 259 | if (uint32_v->Number() == number_v->Number()) { |
| 260 | maybe = JSArray::SetElementsLength(array_handle, uint32_v); |
| 261 | maybe.Check(); |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | Handle<Object> exception; |
| 266 | maybe = isolate->factory()->NewRangeError("invalid_array_length", |
| 267 | HandleVector<Object>(NULL, 0)); |
| 268 | if (!maybe.ToHandle(&exception)) { |
| 269 | isolate->OptionalRescheduleException(false); |
| 270 | return; |
| 271 | } |
| 272 | |
| 273 | isolate->ScheduleThrow(*exception); |
| 274 | } |
| 275 | |
| 276 | |
| 277 | Handle<AccessorInfo> Accessors::ArrayLengthInfo( |
| 278 | Isolate* isolate, PropertyAttributes attributes) { |
| 279 | return MakeAccessor(isolate, |
| 280 | isolate->factory()->length_string(), |
| 281 | &ArrayLengthGetter, |
| 282 | &ArrayLengthSetter, |
| 283 | attributes); |
| 284 | } |
| 285 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 286 | |
| 287 | |
| 288 | // |
| 289 | // Accessors::StringLength |
| 290 | // |
| 291 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 292 | void Accessors::StringLengthGetter( |
| 293 | v8::Local<v8::Name> name, |
| 294 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 295 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 296 | DisallowHeapAllocation no_allocation; |
| 297 | HandleScope scope(isolate); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 298 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 299 | // We have a slight impedance mismatch between the external API and the way we |
| 300 | // use callbacks internally: Externally, callbacks can only be used with |
| 301 | // v8::Object, but internally we have callbacks on entities which are higher |
| 302 | // in the hierarchy, in this case for String values. |
| 303 | |
| 304 | Object* value = *Utils::OpenHandle(*v8::Local<v8::Value>(info.This())); |
| 305 | if (!value->IsString()) { |
| 306 | // Not a string value. That means that we either got a String wrapper or |
| 307 | // a Value with a String wrapper in its prototype chain. |
| 308 | value = JSValue::cast(*Utils::OpenHandle(*info.Holder()))->value(); |
| 309 | } |
| 310 | Object* result = Smi::FromInt(String::cast(value)->length()); |
| 311 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 315 | void Accessors::StringLengthSetter( |
| 316 | v8::Local<v8::Name> name, |
| 317 | v8::Local<v8::Value> value, |
| 318 | const v8::PropertyCallbackInfo<void>& info) { |
| 319 | UNREACHABLE(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 323 | Handle<AccessorInfo> Accessors::StringLengthInfo( |
| 324 | Isolate* isolate, PropertyAttributes attributes) { |
| 325 | return MakeAccessor(isolate, |
| 326 | isolate->factory()->length_string(), |
| 327 | &StringLengthGetter, |
| 328 | &StringLengthSetter, |
| 329 | attributes); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 333 | // |
| 334 | // Accessors::ScriptColumnOffset |
| 335 | // |
| 336 | |
| 337 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 338 | void Accessors::ScriptColumnOffsetGetter( |
| 339 | v8::Local<v8::Name> name, |
| 340 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 341 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 342 | DisallowHeapAllocation no_allocation; |
| 343 | HandleScope scope(isolate); |
| 344 | Object* object = *Utils::OpenHandle(*info.This()); |
| 345 | Object* res = Script::cast(JSValue::cast(object)->value())->column_offset(); |
| 346 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 350 | void Accessors::ScriptColumnOffsetSetter( |
| 351 | v8::Local<v8::Name> name, |
| 352 | v8::Local<v8::Value> value, |
| 353 | const v8::PropertyCallbackInfo<void>& info) { |
| 354 | UNREACHABLE(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 358 | Handle<AccessorInfo> Accessors::ScriptColumnOffsetInfo( |
| 359 | Isolate* isolate, PropertyAttributes attributes) { |
| 360 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 361 | STATIC_CHAR_VECTOR("column_offset"))); |
| 362 | return MakeAccessor(isolate, |
| 363 | name, |
| 364 | &ScriptColumnOffsetGetter, |
| 365 | &ScriptColumnOffsetSetter, |
| 366 | attributes); |
| 367 | } |
| 368 | |
| 369 | |
| 370 | // |
| 371 | // Accessors::ScriptId |
| 372 | // |
| 373 | |
| 374 | |
| 375 | void Accessors::ScriptIdGetter( |
| 376 | v8::Local<v8::Name> name, |
| 377 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 378 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 379 | DisallowHeapAllocation no_allocation; |
| 380 | HandleScope scope(isolate); |
| 381 | Object* object = *Utils::OpenHandle(*info.This()); |
| 382 | Object* id = Script::cast(JSValue::cast(object)->value())->id(); |
| 383 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(id, isolate))); |
| 384 | } |
| 385 | |
| 386 | |
| 387 | void Accessors::ScriptIdSetter( |
| 388 | v8::Local<v8::Name> name, |
| 389 | v8::Local<v8::Value> value, |
| 390 | const v8::PropertyCallbackInfo<void>& info) { |
| 391 | UNREACHABLE(); |
| 392 | } |
| 393 | |
| 394 | |
| 395 | Handle<AccessorInfo> Accessors::ScriptIdInfo( |
| 396 | Isolate* isolate, PropertyAttributes attributes) { |
| 397 | Handle<String> name( |
| 398 | isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("id"))); |
| 399 | return MakeAccessor(isolate, |
| 400 | name, |
| 401 | &ScriptIdGetter, |
| 402 | &ScriptIdSetter, |
| 403 | attributes); |
| 404 | } |
| 405 | |
| 406 | |
| 407 | // |
| 408 | // Accessors::ScriptName |
| 409 | // |
| 410 | |
| 411 | |
| 412 | void Accessors::ScriptNameGetter( |
| 413 | v8::Local<v8::Name> name, |
| 414 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 415 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 416 | DisallowHeapAllocation no_allocation; |
| 417 | HandleScope scope(isolate); |
| 418 | Object* object = *Utils::OpenHandle(*info.This()); |
| 419 | Object* source = Script::cast(JSValue::cast(object)->value())->name(); |
| 420 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate))); |
| 421 | } |
| 422 | |
| 423 | |
| 424 | void Accessors::ScriptNameSetter( |
| 425 | v8::Local<v8::Name> name, |
| 426 | v8::Local<v8::Value> value, |
| 427 | const v8::PropertyCallbackInfo<void>& info) { |
| 428 | UNREACHABLE(); |
| 429 | } |
| 430 | |
| 431 | |
| 432 | Handle<AccessorInfo> Accessors::ScriptNameInfo( |
| 433 | Isolate* isolate, PropertyAttributes attributes) { |
| 434 | return MakeAccessor(isolate, |
| 435 | isolate->factory()->name_string(), |
| 436 | &ScriptNameGetter, |
| 437 | &ScriptNameSetter, |
| 438 | attributes); |
| 439 | } |
| 440 | |
| 441 | |
| 442 | // |
| 443 | // Accessors::ScriptSource |
| 444 | // |
| 445 | |
| 446 | |
| 447 | void Accessors::ScriptSourceGetter( |
| 448 | v8::Local<v8::Name> name, |
| 449 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 450 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 451 | DisallowHeapAllocation no_allocation; |
| 452 | HandleScope scope(isolate); |
| 453 | Object* object = *Utils::OpenHandle(*info.This()); |
| 454 | Object* source = Script::cast(JSValue::cast(object)->value())->source(); |
| 455 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate))); |
| 456 | } |
| 457 | |
| 458 | |
| 459 | void Accessors::ScriptSourceSetter( |
| 460 | v8::Local<v8::Name> name, |
| 461 | v8::Local<v8::Value> value, |
| 462 | const v8::PropertyCallbackInfo<void>& info) { |
| 463 | UNREACHABLE(); |
| 464 | } |
| 465 | |
| 466 | |
| 467 | Handle<AccessorInfo> Accessors::ScriptSourceInfo( |
| 468 | Isolate* isolate, PropertyAttributes attributes) { |
| 469 | return MakeAccessor(isolate, |
| 470 | isolate->factory()->source_string(), |
| 471 | &ScriptSourceGetter, |
| 472 | &ScriptSourceSetter, |
| 473 | attributes); |
| 474 | } |
| 475 | |
| 476 | |
| 477 | // |
| 478 | // Accessors::ScriptLineOffset |
| 479 | // |
| 480 | |
| 481 | |
| 482 | void Accessors::ScriptLineOffsetGetter( |
| 483 | v8::Local<v8::Name> name, |
| 484 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 485 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 486 | DisallowHeapAllocation no_allocation; |
| 487 | HandleScope scope(isolate); |
| 488 | Object* object = *Utils::OpenHandle(*info.This()); |
| 489 | Object* res = Script::cast(JSValue::cast(object)->value())->line_offset(); |
| 490 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| 491 | } |
| 492 | |
| 493 | |
| 494 | void Accessors::ScriptLineOffsetSetter( |
| 495 | v8::Local<v8::Name> name, |
| 496 | v8::Local<v8::Value> value, |
| 497 | const v8::PropertyCallbackInfo<void>& info) { |
| 498 | UNREACHABLE(); |
| 499 | } |
| 500 | |
| 501 | |
| 502 | Handle<AccessorInfo> Accessors::ScriptLineOffsetInfo( |
| 503 | Isolate* isolate, PropertyAttributes attributes) { |
| 504 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 505 | STATIC_CHAR_VECTOR("line_offset"))); |
| 506 | return MakeAccessor(isolate, |
| 507 | name, |
| 508 | &ScriptLineOffsetGetter, |
| 509 | &ScriptLineOffsetSetter, |
| 510 | attributes); |
| 511 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 512 | |
| 513 | |
| 514 | // |
| 515 | // Accessors::ScriptType |
| 516 | // |
| 517 | |
| 518 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 519 | void Accessors::ScriptTypeGetter( |
| 520 | v8::Local<v8::Name> name, |
| 521 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 522 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 523 | DisallowHeapAllocation no_allocation; |
| 524 | HandleScope scope(isolate); |
| 525 | Object* object = *Utils::OpenHandle(*info.This()); |
| 526 | Object* res = Script::cast(JSValue::cast(object)->value())->type(); |
| 527 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 531 | void Accessors::ScriptTypeSetter( |
| 532 | v8::Local<v8::Name> name, |
| 533 | v8::Local<v8::Value> value, |
| 534 | const v8::PropertyCallbackInfo<void>& info) { |
| 535 | UNREACHABLE(); |
| 536 | } |
| 537 | |
| 538 | |
| 539 | Handle<AccessorInfo> Accessors::ScriptTypeInfo( |
| 540 | Isolate* isolate, PropertyAttributes attributes) { |
| 541 | Handle<String> name( |
| 542 | isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("type"))); |
| 543 | return MakeAccessor(isolate, |
| 544 | name, |
| 545 | &ScriptTypeGetter, |
| 546 | &ScriptTypeSetter, |
| 547 | attributes); |
| 548 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 549 | |
| 550 | |
| 551 | // |
| 552 | // Accessors::ScriptCompilationType |
| 553 | // |
| 554 | |
| 555 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 556 | void Accessors::ScriptCompilationTypeGetter( |
| 557 | v8::Local<v8::Name> name, |
| 558 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 559 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 560 | DisallowHeapAllocation no_allocation; |
| 561 | HandleScope scope(isolate); |
| 562 | Object* object = *Utils::OpenHandle(*info.This()); |
| 563 | Object* res = Smi::FromInt( |
| 564 | Script::cast(JSValue::cast(object)->value())->compilation_type()); |
| 565 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 569 | void Accessors::ScriptCompilationTypeSetter( |
| 570 | v8::Local<v8::Name> name, |
| 571 | v8::Local<v8::Value> value, |
| 572 | const v8::PropertyCallbackInfo<void>& info) { |
| 573 | UNREACHABLE(); |
| 574 | } |
| 575 | |
| 576 | |
| 577 | Handle<AccessorInfo> Accessors::ScriptCompilationTypeInfo( |
| 578 | Isolate* isolate, PropertyAttributes attributes) { |
| 579 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 580 | STATIC_CHAR_VECTOR("compilation_type"))); |
| 581 | return MakeAccessor(isolate, |
| 582 | name, |
| 583 | &ScriptCompilationTypeGetter, |
| 584 | &ScriptCompilationTypeSetter, |
| 585 | attributes); |
| 586 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 587 | |
| 588 | |
| 589 | // |
| 590 | // Accessors::ScriptGetLineEnds |
| 591 | // |
| 592 | |
| 593 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 594 | void Accessors::ScriptLineEndsGetter( |
| 595 | v8::Local<v8::Name> name, |
| 596 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 597 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 598 | HandleScope scope(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 599 | Handle<Object> object = Utils::OpenHandle(*info.This()); |
| 600 | Handle<Script> script( |
| 601 | Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| 602 | Script::InitLineEnds(script); |
| 603 | DCHECK(script->line_ends()->IsFixedArray()); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 604 | Handle<FixedArray> line_ends(FixedArray::cast(script->line_ends())); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 605 | // We do not want anyone to modify this array from JS. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 606 | DCHECK(*line_ends == isolate->heap()->empty_fixed_array() || |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 607 | line_ends->map() == isolate->heap()->fixed_cow_array_map()); |
| 608 | Handle<JSArray> js_array = |
| 609 | isolate->factory()->NewJSArrayWithElements(line_ends); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 610 | info.GetReturnValue().Set(Utils::ToLocal(js_array)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 614 | void Accessors::ScriptLineEndsSetter( |
| 615 | v8::Local<v8::Name> name, |
| 616 | v8::Local<v8::Value> value, |
| 617 | const v8::PropertyCallbackInfo<void>& info) { |
| 618 | UNREACHABLE(); |
| 619 | } |
| 620 | |
| 621 | |
| 622 | Handle<AccessorInfo> Accessors::ScriptLineEndsInfo( |
| 623 | Isolate* isolate, PropertyAttributes attributes) { |
| 624 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 625 | STATIC_CHAR_VECTOR("line_ends"))); |
| 626 | return MakeAccessor(isolate, |
| 627 | name, |
| 628 | &ScriptLineEndsGetter, |
| 629 | &ScriptLineEndsSetter, |
| 630 | attributes); |
| 631 | } |
| 632 | |
| 633 | |
| 634 | // |
| 635 | // Accessors::ScriptSourceUrl |
| 636 | // |
| 637 | |
| 638 | |
| 639 | void Accessors::ScriptSourceUrlGetter( |
| 640 | v8::Local<v8::Name> name, |
| 641 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 642 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 643 | DisallowHeapAllocation no_allocation; |
| 644 | HandleScope scope(isolate); |
| 645 | Object* object = *Utils::OpenHandle(*info.This()); |
| 646 | Object* url = Script::cast(JSValue::cast(object)->value())->source_url(); |
| 647 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(url, isolate))); |
| 648 | } |
| 649 | |
| 650 | |
| 651 | void Accessors::ScriptSourceUrlSetter( |
| 652 | v8::Local<v8::Name> name, |
| 653 | v8::Local<v8::Value> value, |
| 654 | const v8::PropertyCallbackInfo<void>& info) { |
| 655 | UNREACHABLE(); |
| 656 | } |
| 657 | |
| 658 | |
| 659 | Handle<AccessorInfo> Accessors::ScriptSourceUrlInfo( |
| 660 | Isolate* isolate, PropertyAttributes attributes) { |
| 661 | return MakeAccessor(isolate, |
| 662 | isolate->factory()->source_url_string(), |
| 663 | &ScriptSourceUrlGetter, |
| 664 | &ScriptSourceUrlSetter, |
| 665 | attributes); |
| 666 | } |
| 667 | |
| 668 | |
| 669 | // |
| 670 | // Accessors::ScriptSourceMappingUrl |
| 671 | // |
| 672 | |
| 673 | |
| 674 | void Accessors::ScriptSourceMappingUrlGetter( |
| 675 | v8::Local<v8::Name> name, |
| 676 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 677 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 678 | DisallowHeapAllocation no_allocation; |
| 679 | HandleScope scope(isolate); |
| 680 | Object* object = *Utils::OpenHandle(*info.This()); |
| 681 | Object* url = |
| 682 | Script::cast(JSValue::cast(object)->value())->source_mapping_url(); |
| 683 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(url, isolate))); |
| 684 | } |
| 685 | |
| 686 | |
| 687 | void Accessors::ScriptSourceMappingUrlSetter( |
| 688 | v8::Local<v8::Name> name, |
| 689 | v8::Local<v8::Value> value, |
| 690 | const v8::PropertyCallbackInfo<void>& info) { |
| 691 | UNREACHABLE(); |
| 692 | } |
| 693 | |
| 694 | |
| 695 | Handle<AccessorInfo> Accessors::ScriptSourceMappingUrlInfo( |
| 696 | Isolate* isolate, PropertyAttributes attributes) { |
| 697 | return MakeAccessor(isolate, |
| 698 | isolate->factory()->source_mapping_url_string(), |
| 699 | &ScriptSourceMappingUrlGetter, |
| 700 | &ScriptSourceMappingUrlSetter, |
| 701 | attributes); |
| 702 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 703 | |
| 704 | |
| 705 | // |
| 706 | // Accessors::ScriptGetContextData |
| 707 | // |
| 708 | |
| 709 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 710 | void Accessors::ScriptContextDataGetter( |
| 711 | v8::Local<v8::Name> name, |
| 712 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 713 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 714 | DisallowHeapAllocation no_allocation; |
| 715 | HandleScope scope(isolate); |
| 716 | Object* object = *Utils::OpenHandle(*info.This()); |
| 717 | Object* res = Script::cast(JSValue::cast(object)->value())->context_data(); |
| 718 | info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 722 | void Accessors::ScriptContextDataSetter( |
| 723 | v8::Local<v8::Name> name, |
| 724 | v8::Local<v8::Value> value, |
| 725 | const v8::PropertyCallbackInfo<void>& info) { |
| 726 | UNREACHABLE(); |
| 727 | } |
| 728 | |
| 729 | |
| 730 | Handle<AccessorInfo> Accessors::ScriptContextDataInfo( |
| 731 | Isolate* isolate, PropertyAttributes attributes) { |
| 732 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 733 | STATIC_CHAR_VECTOR("context_data"))); |
| 734 | return MakeAccessor(isolate, |
| 735 | name, |
| 736 | &ScriptContextDataGetter, |
| 737 | &ScriptContextDataSetter, |
| 738 | attributes); |
| 739 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 740 | |
| 741 | |
| 742 | // |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 743 | // Accessors::ScriptGetEvalFromScript |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 744 | // |
| 745 | |
| 746 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 747 | void Accessors::ScriptEvalFromScriptGetter( |
| 748 | v8::Local<v8::Name> name, |
| 749 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 750 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 751 | HandleScope scope(isolate); |
| 752 | Handle<Object> object = Utils::OpenHandle(*info.This()); |
| 753 | Handle<Script> script( |
| 754 | Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| 755 | Handle<Object> result = isolate->factory()->undefined_value(); |
| 756 | if (!script->eval_from_shared()->IsUndefined()) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 757 | Handle<SharedFunctionInfo> eval_from_shared( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 758 | SharedFunctionInfo::cast(script->eval_from_shared())); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 759 | if (eval_from_shared->script()->IsScript()) { |
| 760 | Handle<Script> eval_from_script(Script::cast(eval_from_shared->script())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 761 | result = Script::GetWrapper(eval_from_script); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 762 | } |
| 763 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 764 | |
| 765 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 769 | void Accessors::ScriptEvalFromScriptSetter( |
| 770 | v8::Local<v8::Name> name, |
| 771 | v8::Local<v8::Value> value, |
| 772 | const v8::PropertyCallbackInfo<void>& info) { |
| 773 | UNREACHABLE(); |
| 774 | } |
| 775 | |
| 776 | |
| 777 | Handle<AccessorInfo> Accessors::ScriptEvalFromScriptInfo( |
| 778 | Isolate* isolate, PropertyAttributes attributes) { |
| 779 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 780 | STATIC_CHAR_VECTOR("eval_from_script"))); |
| 781 | return MakeAccessor(isolate, |
| 782 | name, |
| 783 | &ScriptEvalFromScriptGetter, |
| 784 | &ScriptEvalFromScriptSetter, |
| 785 | attributes); |
| 786 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 787 | |
| 788 | |
| 789 | // |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 790 | // Accessors::ScriptGetEvalFromScriptPosition |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 791 | // |
| 792 | |
| 793 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 794 | void Accessors::ScriptEvalFromScriptPositionGetter( |
| 795 | v8::Local<v8::Name> name, |
| 796 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 797 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 798 | HandleScope scope(isolate); |
| 799 | Handle<Object> object = Utils::OpenHandle(*info.This()); |
| 800 | Handle<Script> script( |
| 801 | Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| 802 | Handle<Object> result = isolate->factory()->undefined_value(); |
| 803 | if (script->compilation_type() == Script::COMPILATION_TYPE_EVAL) { |
| 804 | Handle<Code> code(SharedFunctionInfo::cast( |
| 805 | script->eval_from_shared())->code()); |
| 806 | result = Handle<Object>( |
| 807 | Smi::FromInt(code->SourcePosition(code->instruction_start() + |
| 808 | script->eval_from_instructions_offset()->value())), |
| 809 | isolate); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 810 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 811 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 815 | void Accessors::ScriptEvalFromScriptPositionSetter( |
| 816 | v8::Local<v8::Name> name, |
| 817 | v8::Local<v8::Value> value, |
| 818 | const v8::PropertyCallbackInfo<void>& info) { |
| 819 | UNREACHABLE(); |
| 820 | } |
| 821 | |
| 822 | |
| 823 | Handle<AccessorInfo> Accessors::ScriptEvalFromScriptPositionInfo( |
| 824 | Isolate* isolate, PropertyAttributes attributes) { |
| 825 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 826 | STATIC_CHAR_VECTOR("eval_from_script_position"))); |
| 827 | return MakeAccessor(isolate, |
| 828 | name, |
| 829 | &ScriptEvalFromScriptPositionGetter, |
| 830 | &ScriptEvalFromScriptPositionSetter, |
| 831 | attributes); |
| 832 | } |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 833 | |
| 834 | |
| 835 | // |
| 836 | // Accessors::ScriptGetEvalFromFunctionName |
| 837 | // |
| 838 | |
| 839 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 840 | void Accessors::ScriptEvalFromFunctionNameGetter( |
| 841 | v8::Local<v8::Name> name, |
| 842 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 843 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 844 | HandleScope scope(isolate); |
| 845 | Handle<Object> object = Utils::OpenHandle(*info.This()); |
| 846 | Handle<Script> script( |
| 847 | Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| 848 | Handle<Object> result; |
| 849 | Handle<SharedFunctionInfo> shared( |
| 850 | SharedFunctionInfo::cast(script->eval_from_shared())); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 851 | // Find the name of the function calling eval. |
| 852 | if (!shared->name()->IsUndefined()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 853 | result = Handle<Object>(shared->name(), isolate); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 854 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 855 | result = Handle<Object>(shared->inferred_name(), isolate); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 856 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 857 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 858 | } |
| 859 | |
| 860 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 861 | void Accessors::ScriptEvalFromFunctionNameSetter( |
| 862 | v8::Local<v8::Name> name, |
| 863 | v8::Local<v8::Value> value, |
| 864 | const v8::PropertyCallbackInfo<void>& info) { |
| 865 | UNREACHABLE(); |
| 866 | } |
| 867 | |
| 868 | |
| 869 | Handle<AccessorInfo> Accessors::ScriptEvalFromFunctionNameInfo( |
| 870 | Isolate* isolate, PropertyAttributes attributes) { |
| 871 | Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| 872 | STATIC_CHAR_VECTOR("eval_from_function_name"))); |
| 873 | return MakeAccessor(isolate, |
| 874 | name, |
| 875 | &ScriptEvalFromFunctionNameGetter, |
| 876 | &ScriptEvalFromFunctionNameSetter, |
| 877 | attributes); |
| 878 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 879 | |
| 880 | |
| 881 | // |
| 882 | // Accessors::FunctionPrototype |
| 883 | // |
| 884 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 885 | static Handle<Object> GetFunctionPrototype(Isolate* isolate, |
| 886 | Handle<JSFunction> function) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 887 | if (!function->has_prototype()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 888 | Handle<Object> proto = isolate->factory()->NewFunctionPrototype(function); |
| 889 | JSFunction::SetPrototype(function, proto); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 890 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 891 | return Handle<Object>(function->prototype(), isolate); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 892 | } |
| 893 | |
| 894 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 895 | static Handle<Object> SetFunctionPrototype(Isolate* isolate, |
| 896 | Handle<JSFunction> function, |
| 897 | Handle<Object> value) { |
| 898 | Handle<Object> old_value; |
| 899 | bool is_observed = function->map()->is_observed(); |
| 900 | if (is_observed) { |
| 901 | if (function->has_prototype()) |
| 902 | old_value = handle(function->prototype(), isolate); |
| 903 | else |
| 904 | old_value = isolate->factory()->NewFunctionPrototype(function); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 905 | } |
| 906 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 907 | JSFunction::SetPrototype(function, value); |
| 908 | DCHECK(function->prototype() == *value); |
| 909 | |
| 910 | if (is_observed && !old_value->SameValue(*value)) { |
| 911 | JSObject::EnqueueChangeRecord( |
| 912 | function, "update", isolate->factory()->prototype_string(), old_value); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 913 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 914 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 915 | return function; |
| 916 | } |
| 917 | |
| 918 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 919 | Handle<Object> Accessors::FunctionGetPrototype(Handle<JSFunction> function) { |
| 920 | return GetFunctionPrototype(function->GetIsolate(), function); |
| 921 | } |
| 922 | |
| 923 | |
| 924 | Handle<Object> Accessors::FunctionSetPrototype(Handle<JSFunction> function, |
| 925 | Handle<Object> prototype) { |
| 926 | DCHECK(function->should_have_prototype()); |
| 927 | Isolate* isolate = function->GetIsolate(); |
| 928 | return SetFunctionPrototype(isolate, function, prototype); |
| 929 | } |
| 930 | |
| 931 | |
| 932 | void Accessors::FunctionPrototypeGetter( |
| 933 | v8::Local<v8::Name> name, |
| 934 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 935 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 936 | HandleScope scope(isolate); |
| 937 | Handle<JSFunction> function = |
| 938 | Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| 939 | Handle<Object> result = GetFunctionPrototype(isolate, function); |
| 940 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
| 941 | } |
| 942 | |
| 943 | |
| 944 | void Accessors::FunctionPrototypeSetter( |
| 945 | v8::Local<v8::Name> name, |
| 946 | v8::Local<v8::Value> val, |
| 947 | const v8::PropertyCallbackInfo<void>& info) { |
| 948 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 949 | HandleScope scope(isolate); |
| 950 | Handle<Object> value = Utils::OpenHandle(*val); |
| 951 | if (SetPropertyOnInstanceIfInherited(isolate, info, name, value)) { |
| 952 | return; |
| 953 | } |
| 954 | Handle<JSFunction> object = |
| 955 | Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| 956 | SetFunctionPrototype(isolate, object, value); |
| 957 | } |
| 958 | |
| 959 | |
| 960 | Handle<AccessorInfo> Accessors::FunctionPrototypeInfo( |
| 961 | Isolate* isolate, PropertyAttributes attributes) { |
| 962 | return MakeAccessor(isolate, |
| 963 | isolate->factory()->prototype_string(), |
| 964 | &FunctionPrototypeGetter, |
| 965 | &FunctionPrototypeSetter, |
| 966 | attributes); |
| 967 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 968 | |
| 969 | |
| 970 | // |
| 971 | // Accessors::FunctionLength |
| 972 | // |
| 973 | |
| 974 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 975 | void Accessors::FunctionLengthGetter( |
| 976 | v8::Local<v8::Name> name, |
| 977 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 978 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 979 | HandleScope scope(isolate); |
| 980 | Handle<JSFunction> function = |
| 981 | Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| 982 | |
| 983 | int length = 0; |
| 984 | if (function->shared()->is_compiled()) { |
| 985 | length = function->shared()->length(); |
| 986 | } else { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 987 | // If the function isn't compiled yet, the length is not computed |
| 988 | // correctly yet. Compile it now and return the right length. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 989 | if (Compiler::EnsureCompiled(function, KEEP_EXCEPTION)) { |
| 990 | length = function->shared()->length(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 991 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 992 | if (isolate->has_pending_exception()) { |
| 993 | isolate->OptionalRescheduleException(false); |
| 994 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 995 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 996 | Handle<Object> result(Smi::FromInt(length), isolate); |
| 997 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 998 | } |
| 999 | |
| 1000 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1001 | void Accessors::FunctionLengthSetter( |
| 1002 | v8::Local<v8::Name> name, |
| 1003 | v8::Local<v8::Value> val, |
| 1004 | const v8::PropertyCallbackInfo<void>& info) { |
| 1005 | // Function length is non writable, non configurable. |
| 1006 | UNREACHABLE(); |
| 1007 | } |
| 1008 | |
| 1009 | |
| 1010 | Handle<AccessorInfo> Accessors::FunctionLengthInfo( |
| 1011 | Isolate* isolate, PropertyAttributes attributes) { |
| 1012 | return MakeAccessor(isolate, |
| 1013 | isolate->factory()->length_string(), |
| 1014 | &FunctionLengthGetter, |
| 1015 | &FunctionLengthSetter, |
| 1016 | attributes); |
| 1017 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1018 | |
| 1019 | |
| 1020 | // |
| 1021 | // Accessors::FunctionName |
| 1022 | // |
| 1023 | |
| 1024 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1025 | void Accessors::FunctionNameGetter( |
| 1026 | v8::Local<v8::Name> name, |
| 1027 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 1028 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 1029 | HandleScope scope(isolate); |
| 1030 | Handle<JSFunction> function = |
| 1031 | Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| 1032 | Handle<Object> result(function->shared()->name(), isolate); |
| 1033 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1034 | } |
| 1035 | |
| 1036 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1037 | void Accessors::FunctionNameSetter( |
| 1038 | v8::Local<v8::Name> name, |
| 1039 | v8::Local<v8::Value> val, |
| 1040 | const v8::PropertyCallbackInfo<void>& info) { |
| 1041 | // Function name is non writable, non configurable. |
| 1042 | UNREACHABLE(); |
| 1043 | } |
| 1044 | |
| 1045 | |
| 1046 | Handle<AccessorInfo> Accessors::FunctionNameInfo( |
| 1047 | Isolate* isolate, PropertyAttributes attributes) { |
| 1048 | return MakeAccessor(isolate, |
| 1049 | isolate->factory()->name_string(), |
| 1050 | &FunctionNameGetter, |
| 1051 | &FunctionNameSetter, |
| 1052 | attributes); |
| 1053 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1054 | |
| 1055 | |
| 1056 | // |
| 1057 | // Accessors::FunctionArguments |
| 1058 | // |
| 1059 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1060 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1061 | static Handle<Object> ArgumentsForInlinedFunction( |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1062 | JavaScriptFrame* frame, |
| 1063 | Handle<JSFunction> inlined_function, |
| 1064 | int inlined_frame_index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1065 | Isolate* isolate = inlined_function->GetIsolate(); |
| 1066 | Factory* factory = isolate->factory(); |
| 1067 | SlotRefValueBuilder slot_refs( |
| 1068 | frame, |
| 1069 | inlined_frame_index, |
| 1070 | inlined_function->shared()->formal_parameter_count()); |
| 1071 | |
| 1072 | int args_count = slot_refs.args_length(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1073 | Handle<JSObject> arguments = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1074 | factory->NewArgumentsObject(inlined_function, args_count); |
| 1075 | Handle<FixedArray> array = factory->NewFixedArray(args_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1076 | slot_refs.Prepare(isolate); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1077 | for (int i = 0; i < args_count; ++i) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1078 | Handle<Object> value = slot_refs.GetNext(isolate, 0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1079 | array->set(i, *value); |
| 1080 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1081 | slot_refs.Finish(isolate); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1082 | arguments->set_elements(*array); |
| 1083 | |
| 1084 | // Return the freshly allocated arguments object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1085 | return arguments; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1086 | } |
| 1087 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1088 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1089 | static int FindFunctionInFrame(JavaScriptFrame* frame, |
| 1090 | Handle<JSFunction> function) { |
| 1091 | DisallowHeapAllocation no_allocation; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1092 | List<JSFunction*> functions(2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1093 | frame->GetFunctions(&functions); |
| 1094 | for (int i = functions.length() - 1; i >= 0; i--) { |
| 1095 | if (functions[i] == *function) return i; |
| 1096 | } |
| 1097 | return -1; |
| 1098 | } |
| 1099 | |
| 1100 | |
| 1101 | Handle<Object> GetFunctionArguments(Isolate* isolate, |
| 1102 | Handle<JSFunction> function) { |
| 1103 | if (function->shared()->native()) return isolate->factory()->null_value(); |
| 1104 | |
| 1105 | // Find the top invocation of the function by traversing frames. |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1106 | for (JavaScriptFrameIterator it(isolate); !it.done(); it.Advance()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1107 | JavaScriptFrame* frame = it.frame(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1108 | int function_index = FindFunctionInFrame(frame, function); |
| 1109 | if (function_index < 0) continue; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1110 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1111 | if (function_index > 0) { |
| 1112 | // The function in question was inlined. Inlined functions have the |
| 1113 | // correct number of arguments and no allocated arguments object, so |
| 1114 | // we can construct a fresh one by interpreting the function's |
| 1115 | // deoptimization input data. |
| 1116 | return ArgumentsForInlinedFunction(frame, function, function_index); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1117 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1118 | |
| 1119 | if (!frame->is_optimized()) { |
| 1120 | // If there is an arguments variable in the stack, we return that. |
| 1121 | Handle<ScopeInfo> scope_info(function->shared()->scope_info()); |
| 1122 | int index = scope_info->StackSlotIndex( |
| 1123 | isolate->heap()->arguments_string()); |
| 1124 | if (index >= 0) { |
| 1125 | Handle<Object> arguments(frame->GetExpression(index), isolate); |
| 1126 | if (!arguments->IsArgumentsMarker()) return arguments; |
| 1127 | } |
| 1128 | } |
| 1129 | |
| 1130 | // If there is no arguments variable in the stack or we have an |
| 1131 | // optimized frame, we find the frame that holds the actual arguments |
| 1132 | // passed to the function. |
| 1133 | it.AdvanceToArgumentsFrame(); |
| 1134 | frame = it.frame(); |
| 1135 | |
| 1136 | // Get the number of arguments and construct an arguments object |
| 1137 | // mirror for the right frame. |
| 1138 | const int length = frame->ComputeParametersCount(); |
| 1139 | Handle<JSObject> arguments = isolate->factory()->NewArgumentsObject( |
| 1140 | function, length); |
| 1141 | Handle<FixedArray> array = isolate->factory()->NewFixedArray(length); |
| 1142 | |
| 1143 | // Copy the parameters to the arguments object. |
| 1144 | DCHECK(array->length() == length); |
| 1145 | for (int i = 0; i < length; i++) array->set(i, frame->GetParameter(i)); |
| 1146 | arguments->set_elements(*array); |
| 1147 | |
| 1148 | // Return the freshly allocated arguments object. |
| 1149 | return arguments; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1150 | } |
| 1151 | |
| 1152 | // No frame corresponding to the given function found. Return null. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1153 | return isolate->factory()->null_value(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1157 | Handle<Object> Accessors::FunctionGetArguments(Handle<JSFunction> function) { |
| 1158 | return GetFunctionArguments(function->GetIsolate(), function); |
| 1159 | } |
| 1160 | |
| 1161 | |
| 1162 | void Accessors::FunctionArgumentsGetter( |
| 1163 | v8::Local<v8::Name> name, |
| 1164 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 1165 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 1166 | HandleScope scope(isolate); |
| 1167 | Handle<JSFunction> function = |
| 1168 | Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| 1169 | Handle<Object> result = GetFunctionArguments(isolate, function); |
| 1170 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
| 1171 | } |
| 1172 | |
| 1173 | |
| 1174 | void Accessors::FunctionArgumentsSetter( |
| 1175 | v8::Local<v8::Name> name, |
| 1176 | v8::Local<v8::Value> val, |
| 1177 | const v8::PropertyCallbackInfo<void>& info) { |
| 1178 | // Function arguments is non writable, non configurable. |
| 1179 | UNREACHABLE(); |
| 1180 | } |
| 1181 | |
| 1182 | |
| 1183 | Handle<AccessorInfo> Accessors::FunctionArgumentsInfo( |
| 1184 | Isolate* isolate, PropertyAttributes attributes) { |
| 1185 | return MakeAccessor(isolate, |
| 1186 | isolate->factory()->arguments_string(), |
| 1187 | &FunctionArgumentsGetter, |
| 1188 | &FunctionArgumentsSetter, |
| 1189 | attributes); |
| 1190 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1191 | |
| 1192 | |
| 1193 | // |
| 1194 | // Accessors::FunctionCaller |
| 1195 | // |
| 1196 | |
| 1197 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1198 | static inline bool AllowAccessToFunction(Context* current_context, |
| 1199 | JSFunction* function) { |
| 1200 | return current_context->HasSameSecurityTokenAs(function->context()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1201 | } |
| 1202 | |
| 1203 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1204 | class FrameFunctionIterator { |
| 1205 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1206 | FrameFunctionIterator(Isolate* isolate, const DisallowHeapAllocation& promise) |
| 1207 | : isolate_(isolate), |
| 1208 | frame_iterator_(isolate), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1209 | functions_(2), |
| 1210 | index_(0) { |
| 1211 | GetFunctions(); |
| 1212 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1213 | JSFunction* next() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1214 | while (true) { |
| 1215 | if (functions_.length() == 0) return NULL; |
| 1216 | JSFunction* next_function = functions_[index_]; |
| 1217 | index_--; |
| 1218 | if (index_ < 0) { |
| 1219 | GetFunctions(); |
| 1220 | } |
| 1221 | // Skip functions from other origins. |
| 1222 | if (!AllowAccessToFunction(isolate_->context(), next_function)) continue; |
| 1223 | return next_function; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1224 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1225 | } |
| 1226 | |
| 1227 | // Iterate through functions until the first occurence of 'function'. |
| 1228 | // Returns true if 'function' is found, and false if the iterator ends |
| 1229 | // without finding it. |
| 1230 | bool Find(JSFunction* function) { |
| 1231 | JSFunction* next_function; |
| 1232 | do { |
| 1233 | next_function = next(); |
| 1234 | if (next_function == function) return true; |
| 1235 | } while (next_function != NULL); |
| 1236 | return false; |
| 1237 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1238 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1239 | private: |
| 1240 | void GetFunctions() { |
| 1241 | functions_.Rewind(0); |
| 1242 | if (frame_iterator_.done()) return; |
| 1243 | JavaScriptFrame* frame = frame_iterator_.frame(); |
| 1244 | frame->GetFunctions(&functions_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1245 | DCHECK(functions_.length() > 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1246 | frame_iterator_.Advance(); |
| 1247 | index_ = functions_.length() - 1; |
| 1248 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1249 | Isolate* isolate_; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1250 | JavaScriptFrameIterator frame_iterator_; |
| 1251 | List<JSFunction*> functions_; |
| 1252 | int index_; |
| 1253 | }; |
| 1254 | |
| 1255 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1256 | MaybeHandle<JSFunction> FindCaller(Isolate* isolate, |
| 1257 | Handle<JSFunction> function) { |
| 1258 | DisallowHeapAllocation no_allocation; |
| 1259 | FrameFunctionIterator it(isolate, no_allocation); |
| 1260 | if (function->shared()->native()) { |
| 1261 | return MaybeHandle<JSFunction>(); |
| 1262 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1263 | // Find the function from the frames. |
| 1264 | if (!it.Find(*function)) { |
| 1265 | // No frame corresponding to the given function found. Return null. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1266 | return MaybeHandle<JSFunction>(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1267 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1268 | // Find previously called non-toplevel function. |
| 1269 | JSFunction* caller; |
| 1270 | do { |
| 1271 | caller = it.next(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1272 | if (caller == NULL) return MaybeHandle<JSFunction>(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1273 | } while (caller->shared()->is_toplevel()); |
| 1274 | |
| 1275 | // If caller is a built-in function and caller's caller is also built-in, |
| 1276 | // use that instead. |
| 1277 | JSFunction* potential_caller = caller; |
| 1278 | while (potential_caller != NULL && potential_caller->IsBuiltin()) { |
| 1279 | caller = potential_caller; |
| 1280 | potential_caller = it.next(); |
| 1281 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1282 | if (!caller->shared()->native() && potential_caller != NULL) { |
| 1283 | caller = potential_caller; |
| 1284 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1285 | // If caller is bound, return null. This is compatible with JSC, and |
| 1286 | // allows us to make bound functions use the strict function map |
| 1287 | // and its associated throwing caller and arguments. |
| 1288 | if (caller->shared()->bound()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1289 | return MaybeHandle<JSFunction>(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1290 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1291 | // Censor if the caller is not a sloppy mode function. |
| 1292 | // Change from ES5, which used to throw, see: |
| 1293 | // https://bugs.ecmascript.org/show_bug.cgi?id=310 |
| 1294 | if (caller->shared()->strict_mode() == STRICT) { |
| 1295 | return MaybeHandle<JSFunction>(); |
| 1296 | } |
| 1297 | // Don't return caller from another security context. |
| 1298 | if (!AllowAccessToFunction(isolate->context(), caller)) { |
| 1299 | return MaybeHandle<JSFunction>(); |
| 1300 | } |
| 1301 | return Handle<JSFunction>(caller); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1305 | void Accessors::FunctionCallerGetter( |
| 1306 | v8::Local<v8::Name> name, |
| 1307 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 1308 | i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| 1309 | HandleScope scope(isolate); |
| 1310 | Handle<JSFunction> function = |
| 1311 | Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| 1312 | Handle<Object> result; |
| 1313 | MaybeHandle<JSFunction> maybe_caller; |
| 1314 | maybe_caller = FindCaller(isolate, function); |
| 1315 | Handle<JSFunction> caller; |
| 1316 | if (maybe_caller.ToHandle(&caller)) { |
| 1317 | result = caller; |
| 1318 | } else { |
| 1319 | result = isolate->factory()->null_value(); |
| 1320 | } |
| 1321 | info.GetReturnValue().Set(Utils::ToLocal(result)); |
| 1322 | } |
| 1323 | |
| 1324 | |
| 1325 | void Accessors::FunctionCallerSetter( |
| 1326 | v8::Local<v8::Name> name, |
| 1327 | v8::Local<v8::Value> val, |
| 1328 | const v8::PropertyCallbackInfo<void>& info) { |
| 1329 | // Function caller is non writable, non configurable. |
| 1330 | UNREACHABLE(); |
| 1331 | } |
| 1332 | |
| 1333 | |
| 1334 | Handle<AccessorInfo> Accessors::FunctionCallerInfo( |
| 1335 | Isolate* isolate, PropertyAttributes attributes) { |
| 1336 | return MakeAccessor(isolate, |
| 1337 | isolate->factory()->caller_string(), |
| 1338 | &FunctionCallerGetter, |
| 1339 | &FunctionCallerSetter, |
| 1340 | attributes); |
| 1341 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1342 | |
| 1343 | |
| 1344 | // |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1345 | // Accessors::MakeModuleExport |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1346 | // |
| 1347 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1348 | static void ModuleGetExport( |
| 1349 | v8::Local<v8::String> property, |
| 1350 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 1351 | JSModule* instance = JSModule::cast(*v8::Utils::OpenHandle(*info.Holder())); |
| 1352 | Context* context = Context::cast(instance->context()); |
| 1353 | DCHECK(context->IsModuleContext()); |
| 1354 | int slot = info.Data()->Int32Value(); |
| 1355 | Object* value = context->get(slot); |
| 1356 | Isolate* isolate = instance->GetIsolate(); |
| 1357 | if (value->IsTheHole()) { |
| 1358 | Handle<String> name = v8::Utils::OpenHandle(*property); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1359 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1360 | Handle<Object> exception; |
| 1361 | MaybeHandle<Object> maybe = isolate->factory()->NewReferenceError( |
| 1362 | "not_defined", HandleVector(&name, 1)); |
| 1363 | if (!maybe.ToHandle(&exception)) { |
| 1364 | isolate->OptionalRescheduleException(false); |
| 1365 | return; |
| 1366 | } |
| 1367 | |
| 1368 | isolate->ScheduleThrow(*exception); |
| 1369 | return; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1370 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1371 | info.GetReturnValue().Set(v8::Utils::ToLocal(Handle<Object>(value, isolate))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1375 | static void ModuleSetExport( |
| 1376 | v8::Local<v8::String> property, |
| 1377 | v8::Local<v8::Value> value, |
| 1378 | const v8::PropertyCallbackInfo<v8::Value>& info) { |
| 1379 | JSModule* instance = JSModule::cast(*v8::Utils::OpenHandle(*info.Holder())); |
| 1380 | Context* context = Context::cast(instance->context()); |
| 1381 | DCHECK(context->IsModuleContext()); |
| 1382 | int slot = info.Data()->Int32Value(); |
| 1383 | Object* old_value = context->get(slot); |
| 1384 | Isolate* isolate = context->GetIsolate(); |
| 1385 | if (old_value->IsTheHole()) { |
| 1386 | Handle<String> name = v8::Utils::OpenHandle(*property); |
| 1387 | Handle<Object> exception; |
| 1388 | MaybeHandle<Object> maybe = isolate->factory()->NewReferenceError( |
| 1389 | "not_defined", HandleVector(&name, 1)); |
| 1390 | if (!maybe.ToHandle(&exception)) { |
| 1391 | isolate->OptionalRescheduleException(false); |
| 1392 | return; |
| 1393 | } |
| 1394 | |
| 1395 | isolate->ScheduleThrow(*exception); |
| 1396 | return; |
| 1397 | } |
| 1398 | context->set(slot, *v8::Utils::OpenHandle(*value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1399 | } |
| 1400 | |
| 1401 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1402 | Handle<AccessorInfo> Accessors::MakeModuleExport( |
| 1403 | Handle<String> name, |
| 1404 | int index, |
| 1405 | PropertyAttributes attributes) { |
| 1406 | Isolate* isolate = name->GetIsolate(); |
| 1407 | Factory* factory = isolate->factory(); |
| 1408 | Handle<ExecutableAccessorInfo> info = factory->NewExecutableAccessorInfo(); |
| 1409 | info->set_property_attributes(attributes); |
| 1410 | info->set_all_can_read(true); |
| 1411 | info->set_all_can_write(true); |
| 1412 | info->set_name(*name); |
| 1413 | info->set_data(Smi::FromInt(index)); |
| 1414 | Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport); |
| 1415 | Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport); |
| 1416 | info->set_getter(*getter); |
| 1417 | if (!(attributes & ReadOnly)) info->set_setter(*setter); |
| 1418 | return info; |
| 1419 | } |
| 1420 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1421 | |
| 1422 | } } // namespace v8::internal |