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| 1 /* | |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "config.h" | |
| 32 #include "bindings/v8/custom/V8PromiseCustom.h" | |
| 33 | |
| 34 #include "V8Promise.h" | |
| 35 #include "bindings/v8/ScopedPersistent.h" | |
| 36 #include "bindings/v8/ScriptFunctionCall.h" | |
| 37 #include "bindings/v8/ScriptState.h" | |
| 38 #include "bindings/v8/V8Binding.h" | |
| 39 #include "bindings/v8/V8HiddenValue.h" | |
| 40 #include "bindings/v8/V8PerIsolateData.h" | |
| 41 #include "bindings/v8/V8ScriptRunner.h" | |
| 42 #include "bindings/v8/WrapperTypeInfo.h" | |
| 43 #include "core/dom/Document.h" | |
| 44 #include "core/dom/ExecutionContextTask.h" | |
| 45 #include "core/frame/DOMWindow.h" | |
| 46 #include "core/frame/UseCounter.h" | |
| 47 #include "core/workers/WorkerGlobalScope.h" | |
| 48 #include "platform/Task.h" | |
| 49 #include "wtf/Deque.h" | |
| 50 #include "wtf/Functional.h" | |
| 51 #include "wtf/Noncopyable.h" | |
| 52 #include "wtf/PassOwnPtr.h" | |
| 53 #include <v8.h> | |
| 54 | |
| 55 #define TONATIVE_VOID_EMPTY(type, var, value) \ | |
| 56 type var; \ | |
| 57 { \ | |
| 58 v8::TryCatch block; \ | |
| 59 var = (value); \ | |
| 60 if (UNLIKELY(block.HasCaught())) { \ | |
| 61 return; \ | |
| 62 } \ | |
| 63 } | |
| 64 | |
| 65 namespace WebCore { | |
| 66 | |
| 67 namespace { | |
| 68 | |
| 69 v8::Local<v8::ObjectTemplate> cachedObjectTemplate(void* domTemplateKey, int int
ernalFieldCount, v8::Isolate* isolate) | |
| 70 { | |
| 71 V8PerIsolateData* data = V8PerIsolateData::from(isolate); | |
| 72 v8::Handle<v8::FunctionTemplate> functionDescriptor = data->existingDOMTempl
ate(domTemplateKey); | |
| 73 if (!functionDescriptor.IsEmpty()) | |
| 74 return functionDescriptor->InstanceTemplate(); | |
| 75 | |
| 76 functionDescriptor = v8::FunctionTemplate::New(isolate); | |
| 77 v8::Local<v8::ObjectTemplate> instanceTemplate = functionDescriptor->Instanc
eTemplate(); | |
| 78 instanceTemplate->SetInternalFieldCount(internalFieldCount); | |
| 79 data->setDOMTemplate(domTemplateKey, functionDescriptor); | |
| 80 return instanceTemplate; | |
| 81 } | |
| 82 | |
| 83 v8::Local<v8::ObjectTemplate> promiseAllEnvironmentObjectTemplate(v8::Isolate* i
solate) | |
| 84 { | |
| 85 static int domTemplateKey; // This address is used for a key to look up the
dom template. | |
| 86 return cachedObjectTemplate(&domTemplateKey, V8PromiseCustom::PromiseAllEnvi
ronmentFieldCount, isolate); | |
| 87 } | |
| 88 | |
| 89 v8::Local<v8::ObjectTemplate> primitiveWrapperObjectTemplate(v8::Isolate* isolat
e) | |
| 90 { | |
| 91 static int domTemplateKey; // This address is used for a key to look up the
dom template. | |
| 92 return cachedObjectTemplate(&domTemplateKey, V8PromiseCustom::PrimitiveWrapp
erFieldCount, isolate); | |
| 93 } | |
| 94 | |
| 95 v8::Local<v8::ObjectTemplate> internalObjectTemplate(v8::Isolate* isolate) | |
| 96 { | |
| 97 static int domTemplateKey; // This address is used for a key to look up the
dom template. | |
| 98 return cachedObjectTemplate(&domTemplateKey, V8PromiseCustom::InternalFieldC
ount, isolate); | |
| 99 } | |
| 100 | |
| 101 void promiseResolveCallback(const v8::FunctionCallbackInfo<v8::Value>& info) | |
| 102 { | |
| 103 ASSERT(!info.Data().IsEmpty()); | |
| 104 v8::Local<v8::Object> promise = info.Data().As<v8::Object>(); | |
| 105 v8::Local<v8::Value> result = v8::Undefined(info.GetIsolate()); | |
| 106 if (info.Length() > 0) | |
| 107 result = info[0]; | |
| 108 | |
| 109 V8PromiseCustom::resolve(promise, result, info.GetIsolate()); | |
| 110 } | |
| 111 | |
| 112 void promiseRejectCallback(const v8::FunctionCallbackInfo<v8::Value>& info) | |
| 113 { | |
| 114 ASSERT(!info.Data().IsEmpty()); | |
| 115 v8::Local<v8::Object> promise = info.Data().As<v8::Object>(); | |
| 116 v8::Local<v8::Value> result = v8::Undefined(info.GetIsolate()); | |
| 117 if (info.Length() > 0) | |
| 118 result = info[0]; | |
| 119 | |
| 120 V8PromiseCustom::reject(promise, result, info.GetIsolate()); | |
| 121 } | |
| 122 | |
| 123 void promiseAllFulfillCallback(const v8::FunctionCallbackInfo<v8::Value>& info) | |
| 124 { | |
| 125 v8::Isolate* isolate = info.GetIsolate(); | |
| 126 ASSERT(!info.Data().IsEmpty()); | |
| 127 v8::Local<v8::Object> environment = info.Data().As<v8::Object>(); | |
| 128 v8::Local<v8::Value> result = v8::Undefined(isolate); | |
| 129 if (info.Length() > 0) | |
| 130 result = info[0]; | |
| 131 | |
| 132 v8::Local<v8::Object> promise = environment->GetInternalField(V8PromiseCusto
m::PromiseAllEnvironmentPromiseIndex).As<v8::Object>(); | |
| 133 v8::Local<v8::Object> countdownWrapper = environment->GetInternalField(V8Pro
miseCustom::PromiseAllEnvironmentCountdownIndex).As<v8::Object>(); | |
| 134 v8::Local<v8::Integer> index = environment->GetInternalField(V8PromiseCustom
::PromiseAllEnvironmentIndexIndex).As<v8::Integer>(); | |
| 135 v8::Local<v8::Array> results = environment->GetInternalField(V8PromiseCustom
::PromiseAllEnvironmentResultsIndex).As<v8::Array>(); | |
| 136 | |
| 137 results->Set(index->Value(), result); | |
| 138 | |
| 139 v8::Local<v8::Integer> countdown = countdownWrapper->GetInternalField(V8Prom
iseCustom::PrimitiveWrapperPrimitiveIndex).As<v8::Integer>(); | |
| 140 ASSERT(countdown->Value() >= 1); | |
| 141 if (countdown->Value() == 1) { | |
| 142 V8PromiseCustom::resolve(promise, results, isolate); | |
| 143 return; | |
| 144 } | |
| 145 countdownWrapper->SetInternalField(V8PromiseCustom::PrimitiveWrapperPrimitiv
eIndex, v8::Integer::New(isolate, countdown->Value() - 1)); | |
| 146 } | |
| 147 | |
| 148 v8::Local<v8::Object> promiseAllEnvironment(v8::Handle<v8::Object> promise, v8::
Handle<v8::Object> countdownWrapper, int index, v8::Handle<v8::Array> results, v
8::Isolate* isolate) | |
| 149 { | |
| 150 v8::Local<v8::ObjectTemplate> objectTemplate = promiseAllEnvironmentObjectTe
mplate(isolate); | |
| 151 v8::Local<v8::Object> environment = objectTemplate->NewInstance(); | |
| 152 if (environment.IsEmpty()) | |
| 153 return v8::Local<v8::Object>(); | |
| 154 | |
| 155 environment->SetInternalField(V8PromiseCustom::PromiseAllEnvironmentPromiseI
ndex, promise); | |
| 156 environment->SetInternalField(V8PromiseCustom::PromiseAllEnvironmentCountdow
nIndex, countdownWrapper); | |
| 157 environment->SetInternalField(V8PromiseCustom::PromiseAllEnvironmentIndexInd
ex, v8::Integer::New(isolate, index)); | |
| 158 environment->SetInternalField(V8PromiseCustom::PromiseAllEnvironmentResultsI
ndex, results); | |
| 159 return environment; | |
| 160 } | |
| 161 | |
| 162 // Clear |internal|'s derived array. | |
| 163 void clearDerived(v8::Handle<v8::Object> internal, v8::Isolate* isolate) | |
| 164 { | |
| 165 internal->SetInternalField(V8PromiseCustom::InternalFulfillCallbackIndex, v8
::Array::New(isolate)); | |
| 166 internal->SetInternalField(V8PromiseCustom::InternalRejectCallbackIndex, v8:
:Array::New(isolate)); | |
| 167 internal->SetInternalField(V8PromiseCustom::InternalDerivedPromiseIndex, v8:
:Array::New(isolate)); | |
| 168 } | |
| 169 | |
| 170 // Add a tuple (|derivedPromise|, |onFulfilled|, |onRejected|) to | |
| 171 // |internal|'s derived array. | |
| 172 // |internal| must be a Promise internal object. | |
| 173 // |derivedPromise| must be a Promise instance. | |
| 174 // |onFulfilled| and |onRejected| can be an empty value respectively. | |
| 175 void addToDerived(v8::Handle<v8::Object> internal, v8::Handle<v8::Object> derive
dPromise, v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejec
ted, v8::Isolate* isolate) | |
| 176 { | |
| 177 v8::Local<v8::Array> fulfillCallbacks = internal->GetInternalField(V8Promise
Custom::InternalFulfillCallbackIndex).As<v8::Array>(); | |
| 178 v8::Local<v8::Array> rejectCallbacks = internal->GetInternalField(V8PromiseC
ustom::InternalRejectCallbackIndex).As<v8::Array>(); | |
| 179 v8::Local<v8::Array> derivedPromises = internal->GetInternalField(V8PromiseC
ustom::InternalDerivedPromiseIndex).As<v8::Array>(); | |
| 180 | |
| 181 if (onFulfilled.IsEmpty()) { | |
| 182 fulfillCallbacks->Set(fulfillCallbacks->Length(), v8::Undefined(isolate)
); | |
| 183 } else { | |
| 184 fulfillCallbacks->Set(fulfillCallbacks->Length(), onFulfilled); | |
| 185 } | |
| 186 | |
| 187 if (onRejected.IsEmpty()) { | |
| 188 rejectCallbacks->Set(rejectCallbacks->Length(), v8::Undefined(isolate)); | |
| 189 } else { | |
| 190 rejectCallbacks->Set(rejectCallbacks->Length(), onRejected); | |
| 191 } | |
| 192 | |
| 193 ASSERT(!derivedPromise.IsEmpty()); | |
| 194 derivedPromises->Set(derivedPromises->Length(), derivedPromise); | |
| 195 | |
| 196 // Since they are treated as a tuple, | |
| 197 // we need to guaranteed that the length of these arrays are same. | |
| 198 ASSERT(fulfillCallbacks->Length() == rejectCallbacks->Length() && rejectCall
backs->Length() == derivedPromises->Length()); | |
| 199 } | |
| 200 | |
| 201 // Set a |promise|'s state and result that correspond to the state. | |
| 202 // |promise| must be a Promise instance. | |
| 203 void setStateForPromise(v8::Handle<v8::Object> promise, V8PromiseCustom::Promise
State state, v8::Handle<v8::Value> value, v8::Isolate* isolate) | |
| 204 { | |
| 205 ASSERT(!value.IsEmpty()); | |
| 206 ASSERT(state == V8PromiseCustom::Pending || state == V8PromiseCustom::Fulfil
led || state == V8PromiseCustom::Rejected || state == V8PromiseCustom::Following
); | |
| 207 v8::Local<v8::Object> internal = V8PromiseCustom::getInternal(promise); | |
| 208 internal->SetInternalField(V8PromiseCustom::InternalStateIndex, v8::Integer:
:New(isolate, state)); | |
| 209 internal->SetInternalField(V8PromiseCustom::InternalResultIndex, value); | |
| 210 } | |
| 211 | |
| 212 class CallHandlerTask FINAL : public ExecutionContextTask { | |
| 213 public: | |
| 214 CallHandlerTask(v8::Handle<v8::Object> promise, v8::Handle<v8::Function> han
dler, v8::Handle<v8::Value> argument, V8PromiseCustom::PromiseState originatorSt
ate, v8::Isolate* isolate, ExecutionContext* context) | |
| 215 : m_promise(isolate, promise) | |
| 216 , m_handler(isolate, handler) | |
| 217 , m_argument(isolate, argument) | |
| 218 , m_scriptState(ScriptState::current(isolate)) | |
| 219 { | |
| 220 ASSERT(!m_promise.isEmpty()); | |
| 221 ASSERT(!m_handler.isEmpty()); | |
| 222 ASSERT(!m_argument.isEmpty()); | |
| 223 } | |
| 224 virtual ~CallHandlerTask() { } | |
| 225 | |
| 226 virtual void performTask(ExecutionContext*) OVERRIDE; | |
| 227 | |
| 228 private: | |
| 229 ScopedPersistent<v8::Object> m_promise; | |
| 230 ScopedPersistent<v8::Function> m_handler; | |
| 231 ScopedPersistent<v8::Value> m_argument; | |
| 232 RefPtr<ScriptState> m_scriptState; | |
| 233 }; | |
| 234 | |
| 235 void CallHandlerTask::performTask(ExecutionContext* context) | |
| 236 { | |
| 237 ASSERT(context); | |
| 238 if (context->activeDOMObjectsAreStopped()) | |
| 239 return; | |
| 240 | |
| 241 ScriptState::Scope scope(m_scriptState.get()); | |
| 242 v8::Isolate* isolate = m_scriptState->isolate(); | |
| 243 v8::Handle<v8::Value> info[] = { m_argument.newLocal(isolate) }; | |
| 244 v8::TryCatch trycatch; | |
| 245 v8::Local<v8::Value> value = V8ScriptRunner::callFunction(m_handler.newLocal
(isolate), context, v8::Undefined(isolate), WTF_ARRAY_LENGTH(info), info, isolat
e); | |
| 246 if (value.IsEmpty()) { | |
| 247 V8PromiseCustom::reject(m_promise.newLocal(isolate), trycatch.Exception(
), isolate); | |
| 248 } else { | |
| 249 V8PromiseCustom::resolve(m_promise.newLocal(isolate), value, isolate); | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 class UpdateDerivedTask FINAL : public ExecutionContextTask { | |
| 254 public: | |
| 255 UpdateDerivedTask(v8::Handle<v8::Object> promise, v8::Handle<v8::Function> o
nFulfilled, v8::Handle<v8::Function> onRejected, v8::Handle<v8::Object> originat
orValueObject, v8::Isolate* isolate, ExecutionContext* context) | |
| 256 : m_promise(isolate, promise) | |
| 257 , m_onFulfilled(isolate, onFulfilled) | |
| 258 , m_onRejected(isolate, onRejected) | |
| 259 , m_originatorValueObject(isolate, originatorValueObject) | |
| 260 , m_scriptState(ScriptState::current(isolate)) | |
| 261 { | |
| 262 ASSERT(!m_promise.isEmpty()); | |
| 263 ASSERT(!m_originatorValueObject.isEmpty()); | |
| 264 } | |
| 265 virtual ~UpdateDerivedTask() { } | |
| 266 | |
| 267 virtual void performTask(ExecutionContext*) OVERRIDE; | |
| 268 | |
| 269 private: | |
| 270 ScopedPersistent<v8::Object> m_promise; | |
| 271 ScopedPersistent<v8::Function> m_onFulfilled; | |
| 272 ScopedPersistent<v8::Function> m_onRejected; | |
| 273 ScopedPersistent<v8::Object> m_originatorValueObject; | |
| 274 RefPtr<ScriptState> m_scriptState; | |
| 275 }; | |
| 276 | |
| 277 void UpdateDerivedTask::performTask(ExecutionContext* context) | |
| 278 { | |
| 279 ASSERT(context); | |
| 280 if (context->activeDOMObjectsAreStopped()) | |
| 281 return; | |
| 282 | |
| 283 ScriptState::Scope scope(m_scriptState.get()); | |
| 284 v8::Isolate* isolate = m_scriptState->isolate(); | |
| 285 v8::Local<v8::Object> originatorValueObject = m_originatorValueObject.newLoc
al(isolate); | |
| 286 v8::Local<v8::Value> coercedAlready = V8HiddenValue::getHiddenValue(isolate,
originatorValueObject, V8HiddenValue::thenableHiddenPromise(isolate)); | |
| 287 if (!coercedAlready.IsEmpty() && coercedAlready->IsObject()) { | |
| 288 ASSERT(V8PromiseCustom::isPromise(coercedAlready.As<v8::Object>(), isola
te)); | |
| 289 V8PromiseCustom::updateDerivedFromPromise(m_promise.newLocal(isolate), m
_onFulfilled.newLocal(isolate), m_onRejected.newLocal(isolate), coercedAlready.A
s<v8::Object>(), isolate); | |
| 290 return; | |
| 291 } | |
| 292 | |
| 293 v8::Local<v8::Value> then; | |
| 294 v8::TryCatch trycatch; | |
| 295 then = originatorValueObject->Get(v8AtomicString(isolate, "then")); | |
| 296 if (then.IsEmpty()) { | |
| 297 // If calling the [[Get]] internal method threw an exception, catch it a
nd run updateDerivedFromReason. | |
| 298 V8PromiseCustom::updateDerivedFromReason(m_promise.newLocal(isolate), m_
onRejected.newLocal(isolate), trycatch.Exception(), isolate); | |
| 299 return; | |
| 300 } | |
| 301 | |
| 302 if (then->IsFunction()) { | |
| 303 ASSERT(then->IsObject()); | |
| 304 v8::Local<v8::Object> coerced = V8PromiseCustom::coerceThenable(originat
orValueObject, then.As<v8::Function>(), isolate); | |
| 305 // If the stack is exhausted coerced can be empty, but it is impossible | |
| 306 // because this function is executed on a fresh stack. | |
| 307 ASSERT(!coerced.IsEmpty()); | |
| 308 V8PromiseCustom::updateDerivedFromPromise(m_promise.newLocal(isolate), m
_onFulfilled.newLocal(isolate), m_onRejected.newLocal(isolate), coerced, isolate
); | |
| 309 return; | |
| 310 } | |
| 311 | |
| 312 V8PromiseCustom::updateDerivedFromValue(m_promise.newLocal(isolate), m_onFul
filled.newLocal(isolate), originatorValueObject, isolate); | |
| 313 } | |
| 314 | |
| 315 // Since Promises state propagation routines are executed recursively, they caus
e | |
| 316 // stack overflow. | |
| 317 // (e.g. UpdateDerived -> UpdateDerivedFromValue -> SetValue -> | |
| 318 // PropagateToDerived -> UpdateDerived) | |
| 319 // | |
| 320 // To fix that, we introduce PromisePropagator. It holds the stack. When | |
| 321 // propagating the result to the derived tuples, we append the derived tuples | |
| 322 // to the stack. After that, we drain the stack to propagate the result to | |
| 323 // the stored tuples. | |
| 324 // | |
| 325 // PromisePropagator should be held on the stack and should not be held | |
| 326 // as other object's member. PromisePropagator holds Derived tuples. Since | |
| 327 // Derived tuples hold persistent handles to JS objects, retaining | |
| 328 // PromisePropagator in the heap causes memory leaks. | |
| 329 // | |
| 330 class PromisePropagator { | |
| 331 WTF_MAKE_NONCOPYABLE(PromisePropagator); | |
| 332 public: | |
| 333 PromisePropagator() { } | |
| 334 | |
| 335 void performPropagation(v8::Isolate*); | |
| 336 | |
| 337 void setValue(v8::Handle<v8::Object> promise, v8::Handle<v8::Value>, v8::Iso
late*); | |
| 338 void setReason(v8::Handle<v8::Object> promise, v8::Handle<v8::Value>, v8::Is
olate*); | |
| 339 void propagateToDerived(v8::Handle<v8::Object> promise, v8::Isolate*); | |
| 340 void updateDerived(v8::Handle<v8::Object> derivedPromise, v8::Handle<v8::Fun
ction> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Handle<v8::Object>
originator, v8::Isolate*); | |
| 341 void updateDerivedFromValue(v8::Handle<v8::Object> derivedPromise, v8::Handl
e<v8::Function> onFulfilled, v8::Handle<v8::Value>, v8::Isolate*); | |
| 342 void updateDerivedFromReason(v8::Handle<v8::Object> derivedPromise, v8::Hand
le<v8::Function> onRejected, v8::Handle<v8::Value>, v8::Isolate*); | |
| 343 void updateDerivedFromPromise(v8::Handle<v8::Object> derivedPromise, v8::Han
dle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Handle<v
8::Object> promise, v8::Isolate*); | |
| 344 | |
| 345 private: | |
| 346 class Derived { | |
| 347 WTF_MAKE_NONCOPYABLE(Derived); | |
| 348 public: | |
| 349 Derived(v8::Handle<v8::Object> promise, v8::Handle<v8::Function> onFulfi
lled, v8::Handle<v8::Function> onRejected, v8::Handle<v8::Object> originator, v8
::Isolate* isolate) | |
| 350 : m_promise(isolate, promise) | |
| 351 , m_onFulfilled(isolate, onFulfilled) | |
| 352 , m_onRejected(isolate, onRejected) | |
| 353 , m_originator(isolate, originator) | |
| 354 { | |
| 355 ASSERT(!m_promise.isEmpty()); | |
| 356 ASSERT(!m_originator.isEmpty()); | |
| 357 } | |
| 358 | |
| 359 static PassOwnPtr<Derived> create(v8::Handle<v8::Object> promise, v8::Ha
ndle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Handle<
v8::Object> originator, v8::Isolate* isolate) | |
| 360 { | |
| 361 return adoptPtr(new Derived(promise, onFulfilled, onRejected, origin
ator, isolate)); | |
| 362 } | |
| 363 | |
| 364 v8::Local<v8::Object> promise(v8::Isolate* isolate) const { return m_pro
mise.newLocal(isolate); } | |
| 365 v8::Local<v8::Function> onFulfilled(v8::Isolate* isolate) const { return
m_onFulfilled.newLocal(isolate); } | |
| 366 v8::Local<v8::Function> onRejected(v8::Isolate* isolate) const { return
m_onRejected.newLocal(isolate); } | |
| 367 v8::Local<v8::Object> originator(v8::Isolate* isolate) const { return m_
originator.newLocal(isolate); } | |
| 368 | |
| 369 private: | |
| 370 ScopedPersistent<v8::Object> m_promise; | |
| 371 ScopedPersistent<v8::Function> m_onFulfilled; | |
| 372 ScopedPersistent<v8::Function> m_onRejected; | |
| 373 ScopedPersistent<v8::Object> m_originator; | |
| 374 }; | |
| 375 | |
| 376 Deque<OwnPtr<Derived> > m_derivedStack; | |
| 377 }; | |
| 378 | |
| 379 void PromisePropagator::performPropagation(v8::Isolate* isolate) | |
| 380 { | |
| 381 while (!m_derivedStack.isEmpty()) { | |
| 382 v8::HandleScope handleScope(isolate); | |
| 383 OwnPtr<Derived> derived = m_derivedStack.takeLast(); | |
| 384 updateDerived(derived->promise(isolate), derived->onFulfilled(isolate),
derived->onRejected(isolate), derived->originator(isolate), isolate); | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 void PromisePropagator::setValue(v8::Handle<v8::Object> promise, v8::Handle<v8::
Value> value, v8::Isolate* isolate) | |
| 389 { | |
| 390 ASSERT(V8PromiseCustom::getState(V8PromiseCustom::getInternal(promise)) != V
8PromiseCustom::Fulfilled && V8PromiseCustom::getState(V8PromiseCustom::getInter
nal(promise)) != V8PromiseCustom::Rejected); | |
| 391 setStateForPromise(promise, V8PromiseCustom::Fulfilled, value, isolate); | |
| 392 propagateToDerived(promise, isolate); | |
| 393 } | |
| 394 | |
| 395 void PromisePropagator::setReason(v8::Handle<v8::Object> promise, v8::Handle<v8:
:Value> reason, v8::Isolate* isolate) | |
| 396 { | |
| 397 ASSERT(V8PromiseCustom::getState(V8PromiseCustom::getInternal(promise)) != V
8PromiseCustom::Fulfilled && V8PromiseCustom::getState(V8PromiseCustom::getInter
nal(promise)) != V8PromiseCustom::Rejected); | |
| 398 setStateForPromise(promise, V8PromiseCustom::Rejected, reason, isolate); | |
| 399 propagateToDerived(promise, isolate); | |
| 400 } | |
| 401 | |
| 402 void PromisePropagator::propagateToDerived(v8::Handle<v8::Object> promise, v8::I
solate* isolate) | |
| 403 { | |
| 404 v8::Local<v8::Object> internal = V8PromiseCustom::getInternal(promise); | |
| 405 ASSERT(V8PromiseCustom::getState(internal) == V8PromiseCustom::Fulfilled ||
V8PromiseCustom::getState(internal) == V8PromiseCustom::Rejected); | |
| 406 v8::Local<v8::Array> fulfillCallbacks = internal->GetInternalField(V8Promise
Custom::InternalFulfillCallbackIndex).As<v8::Array>(); | |
| 407 v8::Local<v8::Array> rejectCallbacks = internal->GetInternalField(V8PromiseC
ustom::InternalRejectCallbackIndex).As<v8::Array>(); | |
| 408 v8::Local<v8::Array> derivedPromises = internal->GetInternalField(V8PromiseC
ustom::InternalDerivedPromiseIndex).As<v8::Array>(); | |
| 409 // Since they are treated as a tuple, | |
| 410 // we need to guaranteed that the length of these arrays are same. | |
| 411 ASSERT(fulfillCallbacks->Length() == rejectCallbacks->Length() && rejectCall
backs->Length() == derivedPromises->Length()); | |
| 412 | |
| 413 // Append Derived tuple to the stack in reverse order. | |
| 414 for (uint32_t count = 0, length = derivedPromises->Length(); count < length;
++count) { | |
| 415 uint32_t i = length - count - 1; | |
| 416 v8::Local<v8::Object> derivedPromise = derivedPromises->Get(i).As<v8::Ob
ject>(); | |
| 417 | |
| 418 v8::Local<v8::Function> onFulfilled, onRejected; | |
| 419 v8::Local<v8::Value> onFulfilledValue = fulfillCallbacks->Get(i); | |
| 420 if (onFulfilledValue->IsFunction()) { | |
| 421 onFulfilled = onFulfilledValue.As<v8::Function>(); | |
| 422 } | |
| 423 v8::Local<v8::Value> onRejectedValue = rejectCallbacks->Get(i); | |
| 424 if (onRejectedValue->IsFunction()) { | |
| 425 onRejected = onRejectedValue.As<v8::Function>(); | |
| 426 } | |
| 427 | |
| 428 m_derivedStack.append(Derived::create(derivedPromise, onFulfilled, onRej
ected, promise, isolate)); | |
| 429 } | |
| 430 clearDerived(internal, isolate); | |
| 431 } | |
| 432 | |
| 433 void PromisePropagator::updateDerivedFromValue(v8::Handle<v8::Object> derivedPro
mise, v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Value> value, v8::Iso
late* isolate) | |
| 434 { | |
| 435 if (!onFulfilled.IsEmpty()) { | |
| 436 V8PromiseCustom::callHandler(derivedPromise, onFulfilled, value, V8Promi
seCustom::Fulfilled, isolate); | |
| 437 } else { | |
| 438 setValue(derivedPromise, value, isolate); | |
| 439 } | |
| 440 } | |
| 441 | |
| 442 void PromisePropagator::updateDerivedFromReason(v8::Handle<v8::Object> derivedPr
omise, v8::Handle<v8::Function> onRejected, v8::Handle<v8::Value> reason, v8::Is
olate* isolate) | |
| 443 { | |
| 444 if (!onRejected.IsEmpty()) { | |
| 445 V8PromiseCustom::callHandler(derivedPromise, onRejected, reason, V8Promi
seCustom::Rejected, isolate); | |
| 446 } else { | |
| 447 setReason(derivedPromise, reason, isolate); | |
| 448 } | |
| 449 } | |
| 450 | |
| 451 void PromisePropagator::updateDerived(v8::Handle<v8::Object> derivedPromise, v8:
:Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Hand
le<v8::Object> originator, v8::Isolate* isolate) | |
| 452 { | |
| 453 v8::Local<v8::Object> originatorInternal = V8PromiseCustom::getInternal(orig
inator); | |
| 454 V8PromiseCustom::PromiseState originatorState = V8PromiseCustom::getState(or
iginatorInternal); | |
| 455 ASSERT(originatorState == V8PromiseCustom::Fulfilled || originatorState == V
8PromiseCustom::Rejected); | |
| 456 v8::Local<v8::Value> originatorValue = originatorInternal->GetInternalField(
V8PromiseCustom::InternalResultIndex); | |
| 457 if (originatorState == V8PromiseCustom::Fulfilled) { | |
| 458 if (originatorValue->IsObject()) { | |
| 459 ExecutionContext* executionContext = currentExecutionContext(isolate
); | |
| 460 ASSERT(executionContext && executionContext->isContextThread()); | |
| 461 executionContext->postTask(adoptPtr(new UpdateDerivedTask(derivedPro
mise, onFulfilled, onRejected, originatorValue.As<v8::Object>(), isolate, execut
ionContext))); | |
| 462 } else { | |
| 463 updateDerivedFromValue(derivedPromise, onFulfilled, originatorValue,
isolate); | |
| 464 } | |
| 465 } else { | |
| 466 updateDerivedFromReason(derivedPromise, onRejected, originatorValue, iso
late); | |
| 467 } | |
| 468 } | |
| 469 | |
| 470 void PromisePropagator::updateDerivedFromPromise(v8::Handle<v8::Object> derivedP
romise, v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejecte
d, v8::Handle<v8::Object> promise, v8::Isolate* isolate) | |
| 471 { | |
| 472 v8::Local<v8::Object> internal = V8PromiseCustom::getInternal(promise); | |
| 473 V8PromiseCustom::PromiseState state = V8PromiseCustom::getState(internal); | |
| 474 if (state == V8PromiseCustom::Fulfilled || state == V8PromiseCustom::Rejecte
d) { | |
| 475 updateDerived(derivedPromise, onFulfilled, onRejected, promise, isolate)
; | |
| 476 } else { | |
| 477 addToDerived(internal, derivedPromise, onFulfilled, onRejected, isolate)
; | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 } // namespace | |
| 482 | |
| 483 void V8Promise::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& inf
o) | |
| 484 { | |
| 485 v8SetReturnValue(info, v8::Local<v8::Value>()); | |
| 486 v8::Isolate* isolate = info.GetIsolate(); | |
| 487 ExecutionContext* executionContext = callingExecutionContext(isolate); | |
| 488 UseCounter::count(executionContext, UseCounter::PromiseConstructor); | |
| 489 if (!info.Length() || !info[0]->IsFunction()) { | |
| 490 throwTypeError("Promise constructor takes a function argument", isolate)
; | |
| 491 return; | |
| 492 } | |
| 493 v8::Local<v8::Function> init = info[0].As<v8::Function>(); | |
| 494 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, promise, V8PromiseCustom::createP
romise(info.Holder(), isolate)); | |
| 495 TONATIVE_VOID_EMPTY(v8::Handle<v8::Value>, resolve, createClosure(promiseRes
olveCallback, promise, isolate)); | |
| 496 TONATIVE_VOID_EMPTY(v8::Handle<v8::Value>, reject, createClosure(promiseReje
ctCallback, promise, isolate)); | |
| 497 v8::Handle<v8::Value> argv[] = { resolve, reject }; | |
| 498 v8::TryCatch trycatch; | |
| 499 if (V8ScriptRunner::callFunction(init, currentExecutionContext(isolate), v8:
:Undefined(isolate), WTF_ARRAY_LENGTH(argv), argv, isolate).IsEmpty()) { | |
| 500 // An exception is thrown. Reject the promise if its resolved flag is un
set. | |
| 501 V8PromiseCustom::reject(promise, trycatch.Exception(), isolate); | |
| 502 } | |
| 503 v8SetReturnValue(info, promise); | |
| 504 return; | |
| 505 } | |
| 506 | |
| 507 void V8Promise::thenMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info
) | |
| 508 { | |
| 509 v8::Isolate* isolate = info.GetIsolate(); | |
| 510 v8::Local<v8::Function> onFulfilled, onRejected; | |
| 511 if (info.Length() > 0 && info[0]->IsFunction()) | |
| 512 onFulfilled = info[0].As<v8::Function>(); | |
| 513 if (info.Length() > 1 && info[1]->IsFunction()) | |
| 514 onRejected = info[1].As<v8::Function>(); | |
| 515 TONATIVE_VOID_EMPTY(v8::Local<v8::Value>, newPromise, V8PromiseCustom::then(
info.Holder(), onFulfilled, onRejected, isolate)); | |
| 516 v8SetReturnValue(info, newPromise); | |
| 517 } | |
| 518 | |
| 519 void V8Promise::castMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info
) | |
| 520 { | |
| 521 v8::Isolate* isolate = info.GetIsolate(); | |
| 522 ExecutionContext* executionContext = callingExecutionContext(isolate); | |
| 523 UseCounter::count(executionContext, UseCounter::PromiseCast); | |
| 524 v8::Local<v8::Value> result = v8::Undefined(isolate); | |
| 525 if (info.Length() > 0) | |
| 526 result = info[0]; | |
| 527 | |
| 528 TONATIVE_VOID_EMPTY(v8::Local<v8::Value>, cast, V8PromiseCustom::toPromise(r
esult, isolate)); | |
| 529 v8SetReturnValue(info, cast); | |
| 530 } | |
| 531 | |
| 532 void V8Promise::catchMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& inf
o) | |
| 533 { | |
| 534 v8::Isolate* isolate = info.GetIsolate(); | |
| 535 v8::Local<v8::Function> onFulfilled, onRejected; | |
| 536 | |
| 537 if (info.Length() > 0 && !info[0]->IsUndefined()) { | |
| 538 if (!info[0]->IsFunction()) { | |
| 539 v8SetReturnValue(info, throwTypeError("onRejected must be a function
or undefined", isolate)); | |
| 540 return; | |
| 541 } | |
| 542 onRejected = info[0].As<v8::Function>(); | |
| 543 } | |
| 544 TONATIVE_VOID_EMPTY(v8::Local<v8::Value>, newPromise, V8PromiseCustom::then(
info.Holder(), onFulfilled, onRejected, isolate)); | |
| 545 v8SetReturnValue(info, newPromise); | |
| 546 } | |
| 547 | |
| 548 void V8Promise::resolveMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& i
nfo) | |
| 549 { | |
| 550 v8::Isolate* isolate = info.GetIsolate(); | |
| 551 ExecutionContext* executionContext = callingExecutionContext(isolate); | |
| 552 UseCounter::count(executionContext, UseCounter::PromiseResolve); | |
| 553 v8::Local<v8::Value> result = v8::Undefined(isolate); | |
| 554 if (info.Length() > 0) | |
| 555 result = info[0]; | |
| 556 | |
| 557 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, promise, V8PromiseCustom::createP
romise(info.Holder(), isolate)); | |
| 558 V8PromiseCustom::resolve(promise, result, isolate); | |
| 559 v8SetReturnValue(info, promise); | |
| 560 } | |
| 561 | |
| 562 void V8Promise::rejectMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& in
fo) | |
| 563 { | |
| 564 v8::Isolate* isolate = info.GetIsolate(); | |
| 565 ExecutionContext* executionContext = callingExecutionContext(isolate); | |
| 566 UseCounter::count(executionContext, UseCounter::PromiseReject); | |
| 567 v8::Local<v8::Value> result = v8::Undefined(isolate); | |
| 568 if (info.Length() > 0) | |
| 569 result = info[0]; | |
| 570 | |
| 571 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, promise, V8PromiseCustom::createP
romise(info.Holder(), isolate)); | |
| 572 V8PromiseCustom::reject(promise, result, isolate); | |
| 573 v8SetReturnValue(info, promise); | |
| 574 } | |
| 575 | |
| 576 void V8Promise::raceMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info
) | |
| 577 { | |
| 578 v8::Isolate* isolate = info.GetIsolate(); | |
| 579 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, promise, V8PromiseCustom::createP
romise(info.Holder(), isolate)); | |
| 580 | |
| 581 if (!info.Length() || !info[0]->IsArray()) { | |
| 582 v8SetReturnValue(info, promise); | |
| 583 return; | |
| 584 } | |
| 585 | |
| 586 // FIXME: Now we limit the iterable type to the Array type. | |
| 587 v8::Local<v8::Array> iterable = info[0].As<v8::Array>(); | |
| 588 TONATIVE_VOID_EMPTY(v8::Local<v8::Function>, onFulfilled, createClosure(prom
iseResolveCallback, promise, isolate)); | |
| 589 TONATIVE_VOID_EMPTY(v8::Local<v8::Function>, onRejected, createClosure(promi
seRejectCallback, promise, isolate)); | |
| 590 | |
| 591 for (unsigned i = 0, length = iterable->Length(); i < length; ++i) { | |
| 592 // Array-holes should not be skipped by for-of iteration semantics. | |
| 593 TONATIVE_VOID_EMPTY(v8::Local<v8::Value>, nextValue, iterable->Get(i)); | |
| 594 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, nextPromise, V8PromiseCustom:
:toPromise(nextValue, isolate)); | |
| 595 TONATIVE_VOID_EMPTY(v8::Local<v8::Value>, unused, V8PromiseCustom::then(
nextPromise, onFulfilled, onRejected, isolate)); | |
| 596 } | |
| 597 v8SetReturnValue(info, promise); | |
| 598 } | |
| 599 | |
| 600 void V8Promise::allMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info) | |
| 601 { | |
| 602 v8::Isolate* isolate = info.GetIsolate(); | |
| 603 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, promise, V8PromiseCustom::createP
romise(info.Holder(), isolate)); | |
| 604 v8::Local<v8::Array> results = v8::Array::New(info.GetIsolate()); | |
| 605 | |
| 606 if (!info.Length() || !info[0]->IsArray()) { | |
| 607 V8PromiseCustom::resolve(promise, results, isolate); | |
| 608 v8SetReturnValue(info, promise); | |
| 609 return; | |
| 610 } | |
| 611 | |
| 612 // FIXME: Now we limit the iterable type to the Array type. | |
| 613 v8::Local<v8::Array> iterable = info[0].As<v8::Array>(); | |
| 614 | |
| 615 if (!iterable->Length()) { | |
| 616 V8PromiseCustom::resolve(promise, results, isolate); | |
| 617 v8SetReturnValue(info, promise); | |
| 618 return; | |
| 619 } | |
| 620 | |
| 621 v8::Local<v8::ObjectTemplate> objectTemplate = primitiveWrapperObjectTemplat
e(isolate); | |
| 622 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, countdownWrapper, objectTemplate-
>NewInstance()); | |
| 623 countdownWrapper->SetInternalField(V8PromiseCustom::PrimitiveWrapperPrimitiv
eIndex, v8::Integer::New(isolate, iterable->Length())); | |
| 624 | |
| 625 TONATIVE_VOID_EMPTY(v8::Local<v8::Function>, onRejected, createClosure(promi
seRejectCallback, promise, isolate)); | |
| 626 for (unsigned i = 0, length = iterable->Length(); i < length; ++i) { | |
| 627 // Array-holes should not be skipped by for-of iteration semantics. | |
| 628 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, environment, promiseAllEnviro
nment(promise, countdownWrapper, i, results, isolate)); | |
| 629 TONATIVE_VOID_EMPTY(v8::Local<v8::Function>, onFulfilled, createClosure(
promiseAllFulfillCallback, environment, isolate)); | |
| 630 TONATIVE_VOID_EMPTY(v8::Local<v8::Value>, nextValue, iterable->Get(i)); | |
| 631 TONATIVE_VOID_EMPTY(v8::Local<v8::Object>, nextPromise, V8PromiseCustom:
:toPromise(nextValue, isolate)); | |
| 632 TONATIVE_VOID_EMPTY(v8::Local<v8::Value>, unused, V8PromiseCustom::then(
nextPromise, onFulfilled, onRejected, isolate)); | |
| 633 } | |
| 634 v8SetReturnValue(info, promise); | |
| 635 } | |
| 636 | |
| 637 // | |
| 638 // -- V8PromiseCustom -- | |
| 639 v8::Local<v8::Object> V8PromiseCustom::createPromise(v8::Handle<v8::Object> crea
tionContext, v8::Isolate* isolate) | |
| 640 { | |
| 641 v8::Local<v8::ObjectTemplate> internalTemplate = internalObjectTemplate(isol
ate); | |
| 642 v8::Local<v8::Object> internal = internalTemplate->NewInstance(); | |
| 643 if (internal.IsEmpty()) | |
| 644 return v8::Local<v8::Object>(); | |
| 645 v8::Local<v8::Object> promise = V8DOMWrapper::createWrapper(creationContext,
&V8Promise::wrapperTypeInfo, 0, isolate); | |
| 646 | |
| 647 clearDerived(internal, isolate); | |
| 648 promise->SetInternalField(v8DOMWrapperObjectIndex, internal); | |
| 649 | |
| 650 setStateForPromise(promise, Pending, v8::Undefined(isolate), isolate); | |
| 651 return promise; | |
| 652 } | |
| 653 | |
| 654 v8::Local<v8::Object> V8PromiseCustom::getInternal(v8::Handle<v8::Object> promis
e) | |
| 655 { | |
| 656 v8::Local<v8::Value> value = promise->GetInternalField(v8DOMWrapperObjectInd
ex); | |
| 657 return value.As<v8::Object>(); | |
| 658 } | |
| 659 | |
| 660 V8PromiseCustom::PromiseState V8PromiseCustom::getState(v8::Handle<v8::Object> i
nternal) | |
| 661 { | |
| 662 v8::Handle<v8::Value> value = internal->GetInternalField(V8PromiseCustom::In
ternalStateIndex); | |
| 663 uint32_t number = toInt32(value); | |
| 664 ASSERT(number == Pending || number == Fulfilled || number == Rejected || num
ber == Following); | |
| 665 return static_cast<PromiseState>(number); | |
| 666 } | |
| 667 | |
| 668 bool V8PromiseCustom::isPromise(v8::Handle<v8::Value> maybePromise, v8::Isolate*
isolate) | |
| 669 { | |
| 670 return V8Promise::domTemplate(isolate)->HasInstance(maybePromise); | |
| 671 } | |
| 672 | |
| 673 v8::Local<v8::Object> V8PromiseCustom::toPromise(v8::Handle<v8::Value> maybeProm
ise, v8::Isolate* isolate) | |
| 674 { | |
| 675 // FIXME: Currently we don't check [[PromiseConstructor]] since we limit | |
| 676 // the creation of the promise objects only from the Blink Promise | |
| 677 // constructor. | |
| 678 if (isPromise(maybePromise, isolate)) | |
| 679 return maybePromise.As<v8::Object>(); | |
| 680 | |
| 681 v8::Local<v8::Object> promise = createPromise(v8::Handle<v8::Object>(), isol
ate); | |
| 682 if (promise.IsEmpty()) | |
| 683 return v8::Local<v8::Object>(); | |
| 684 resolve(promise, maybePromise, isolate); | |
| 685 return promise; | |
| 686 } | |
| 687 | |
| 688 void V8PromiseCustom::resolve(v8::Handle<v8::Object> promise, v8::Handle<v8::Val
ue> result, v8::Isolate* isolate) | |
| 689 { | |
| 690 ASSERT(!result.IsEmpty()); | |
| 691 v8::Local<v8::Object> internal = getInternal(promise); | |
| 692 PromiseState state = getState(internal); | |
| 693 if (state != Pending) | |
| 694 return; | |
| 695 | |
| 696 if (isPromise(result, isolate)) { | |
| 697 v8::Local<v8::Object> valuePromise = result.As<v8::Object>(); | |
| 698 v8::Local<v8::Object> valueInternal = getInternal(valuePromise); | |
| 699 PromiseState valueState = getState(valueInternal); | |
| 700 if (promise->SameValue(valuePromise)) { | |
| 701 v8::Local<v8::Value> reason = V8ThrowException::createTypeError("Res
olve a promise with itself", isolate); | |
| 702 setReason(promise, reason, isolate); | |
| 703 } else if (valueState == Following) { | |
| 704 v8::Local<v8::Object> valuePromiseFollowing = valueInternal->GetInte
rnalField(InternalResultIndex).As<v8::Object>(); | |
| 705 setStateForPromise(promise, Following, valuePromiseFollowing, isolat
e); | |
| 706 addToDerived(getInternal(valuePromiseFollowing), promise, v8::Handle
<v8::Function>(), v8::Handle<v8::Function>(), isolate); | |
| 707 } else if (valueState == Fulfilled) { | |
| 708 setValue(promise, valueInternal->GetInternalField(InternalResultInde
x), isolate); | |
| 709 } else if (valueState == Rejected) { | |
| 710 setReason(promise, valueInternal->GetInternalField(InternalResultInd
ex), isolate); | |
| 711 } else { | |
| 712 ASSERT(valueState == Pending); | |
| 713 setStateForPromise(promise, Following, valuePromise, isolate); | |
| 714 addToDerived(valueInternal, promise, v8::Handle<v8::Function>(), v8:
:Handle<v8::Function>(), isolate); | |
| 715 } | |
| 716 } else { | |
| 717 setValue(promise, result, isolate); | |
| 718 } | |
| 719 } | |
| 720 | |
| 721 void V8PromiseCustom::reject(v8::Handle<v8::Object> promise, v8::Handle<v8::Valu
e> reason, v8::Isolate* isolate) | |
| 722 { | |
| 723 v8::Local<v8::Object> internal = getInternal(promise); | |
| 724 PromiseState state = getState(internal); | |
| 725 if (state != Pending) | |
| 726 return; | |
| 727 setReason(promise, reason, isolate); | |
| 728 } | |
| 729 | |
| 730 v8::Local<v8::Object> V8PromiseCustom::then(v8::Handle<v8::Object> promise, v8::
Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Isola
te* isolate) | |
| 731 { | |
| 732 v8::Handle<v8::Object> internal = getInternal(promise); | |
| 733 while (getState(internal) == Following) { | |
| 734 promise = internal->GetInternalField(InternalResultIndex).As<v8::Object>
(); | |
| 735 internal = getInternal(promise); | |
| 736 } | |
| 737 // FIXME: Currently we don't lookup "constructor" property since we limit | |
| 738 // the creation of the promise objects only from the Blink Promise | |
| 739 // constructor. | |
| 740 v8::Local<v8::Object> derivedPromise = createPromise(v8::Handle<v8::Object>(
), isolate); | |
| 741 if (derivedPromise.IsEmpty()) | |
| 742 return v8::Local<v8::Object>(); | |
| 743 updateDerivedFromPromise(derivedPromise, onFulfilled, onRejected, promise, i
solate); | |
| 744 return derivedPromise; | |
| 745 } | |
| 746 | |
| 747 void V8PromiseCustom::setValue(v8::Handle<v8::Object> promise, v8::Handle<v8::Va
lue> value, v8::Isolate* isolate) | |
| 748 { | |
| 749 PromisePropagator propagator; | |
| 750 propagator.setValue(promise, value, isolate); | |
| 751 propagator.performPropagation(isolate); | |
| 752 } | |
| 753 | |
| 754 void V8PromiseCustom::setReason(v8::Handle<v8::Object> promise, v8::Handle<v8::V
alue> reason, v8::Isolate* isolate) | |
| 755 { | |
| 756 PromisePropagator propagator; | |
| 757 propagator.setReason(promise, reason, isolate); | |
| 758 propagator.performPropagation(isolate); | |
| 759 } | |
| 760 | |
| 761 void V8PromiseCustom::propagateToDerived(v8::Handle<v8::Object> promise, v8::Iso
late* isolate) | |
| 762 { | |
| 763 PromisePropagator propagator; | |
| 764 propagator.propagateToDerived(promise, isolate); | |
| 765 propagator.performPropagation(isolate); | |
| 766 } | |
| 767 | |
| 768 void V8PromiseCustom::updateDerived(v8::Handle<v8::Object> derivedPromise, v8::H
andle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected, v8::Handle
<v8::Object> originator, v8::Isolate* isolate) | |
| 769 { | |
| 770 PromisePropagator propagator; | |
| 771 propagator.updateDerived(derivedPromise, onFulfilled, onRejected, originator
, isolate); | |
| 772 propagator.performPropagation(isolate); | |
| 773 } | |
| 774 | |
| 775 void V8PromiseCustom::updateDerivedFromValue(v8::Handle<v8::Object> derivedPromi
se, v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Value> value, v8::Isola
te* isolate) | |
| 776 { | |
| 777 PromisePropagator propagator; | |
| 778 propagator.updateDerivedFromValue(derivedPromise, onFulfilled, value, isolat
e); | |
| 779 propagator.performPropagation(isolate); | |
| 780 } | |
| 781 | |
| 782 void V8PromiseCustom::updateDerivedFromReason(v8::Handle<v8::Object> derivedProm
ise, v8::Handle<v8::Function> onRejected, v8::Handle<v8::Value> reason, v8::Isol
ate* isolate) | |
| 783 { | |
| 784 PromisePropagator propagator; | |
| 785 propagator.updateDerivedFromReason(derivedPromise, onRejected, reason, isola
te); | |
| 786 propagator.performPropagation(isolate); | |
| 787 } | |
| 788 | |
| 789 void V8PromiseCustom::updateDerivedFromPromise(v8::Handle<v8::Object> derivedPro
mise, v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected,
v8::Handle<v8::Object> promise, v8::Isolate* isolate) | |
| 790 { | |
| 791 PromisePropagator propagator; | |
| 792 propagator.updateDerivedFromPromise(derivedPromise, onFulfilled, onRejected,
promise, isolate); | |
| 793 propagator.performPropagation(isolate); | |
| 794 } | |
| 795 | |
| 796 v8::Local<v8::Object> V8PromiseCustom::coerceThenable(v8::Handle<v8::Object> the
nable, v8::Handle<v8::Function> then, v8::Isolate* isolate) | |
| 797 { | |
| 798 ASSERT(!thenable.IsEmpty()); | |
| 799 ASSERT(!then.IsEmpty()); | |
| 800 v8::Local<v8::Object> promise = createPromise(v8::Handle<v8::Object>(), isol
ate); | |
| 801 if (promise.IsEmpty()) | |
| 802 return v8::Local<v8::Object>(); | |
| 803 v8::Handle<v8::Value> onFulfilled = createClosure(promiseResolveCallback, pr
omise, isolate); | |
| 804 if (onFulfilled.IsEmpty()) | |
| 805 return v8::Local<v8::Object>(); | |
| 806 v8::Handle<v8::Value> onRejected = createClosure(promiseRejectCallback, prom
ise, isolate); | |
| 807 if (onRejected.IsEmpty()) | |
| 808 return v8::Local<v8::Object>(); | |
| 809 v8::Handle<v8::Value> argv[] = { onFulfilled, onRejected }; | |
| 810 | |
| 811 v8::TryCatch trycatch; | |
| 812 if (V8ScriptRunner::callFunction(then, currentExecutionContext(isolate), the
nable, WTF_ARRAY_LENGTH(argv), argv, isolate).IsEmpty()) { | |
| 813 reject(promise, trycatch.Exception(), isolate); | |
| 814 } | |
| 815 V8HiddenValue::setHiddenValue(isolate, thenable, V8HiddenValue::thenableHidd
enPromise(isolate), promise); | |
| 816 return promise; | |
| 817 } | |
| 818 | |
| 819 void V8PromiseCustom::callHandler(v8::Handle<v8::Object> promise, v8::Handle<v8:
:Function> handler, v8::Handle<v8::Value> argument, PromiseState originatorState
, v8::Isolate* isolate) | |
| 820 { | |
| 821 ASSERT(originatorState == Fulfilled || originatorState == Rejected); | |
| 822 ExecutionContext* executionContext = currentExecutionContext(isolate); | |
| 823 ASSERT(executionContext && executionContext->isContextThread()); | |
| 824 executionContext->postTask(adoptPtr(new CallHandlerTask(promise, handler, ar
gument, originatorState, isolate, executionContext))); | |
| 825 } | |
| 826 | |
| 827 } // namespace WebCore | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 293933002:
Remove the Promises old implementation. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master