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/ScriptPromiseResolver.h" 33 34 #include "RuntimeEnabledFeatures.h" 35 #include "bindings/v8/ScriptState.h" 36 #include "bindings/v8/ScriptValue.h" 37 #include "bindings/v8/V8Binding.h" 38 #include "bindings/v8/V8DOMWrapper.h" 39 #include "bindings/v8/custom/V8PromiseCustom.h" 40 41 #include <v8.h> 42 43 namespace WebCore { 44 45 ScriptPromiseResolver::ScriptPromiseResolver(v8::Handle<v8::Object> creationContext, v8::Isolate* isolate) 46 : m_isolate(isolate) 47 { 48 ASSERT(RuntimeEnabledFeatures::promiseEnabled()); 49 v8::Local<v8::Object> promise, resolver; 50 V8PromiseCustom::createPromise(creationContext, &promise, &resolver, isolate); 51 m_promise.set(isolate, promise); 52 m_resolver.set(isolate, resolver); 53 } 54 55 ScriptPromiseResolver::~ScriptPromiseResolver() 56 { 57 // We don't call "detach" here because it requires a caller 58 // to be in a v8 context. 59 60 detachPromise(); 61 m_resolver.clear(); 62 } 63 64 PassRefPtr<ScriptPromiseResolver> ScriptPromiseResolver::create(ScriptExecutionContext* context) 65 { 66 ASSERT(v8::Context::InContext()); 67 ASSERT(context); 68 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 69 return adoptRef(new ScriptPromiseResolver(toV8Context(context, DOMWrapperWorld::current())->Global(), isolate)); 70 } 71 72 PassRefPtr<ScriptPromiseResolver> ScriptPromiseResolver::create() 73 { 74 ASSERT(v8::Context::InContext()); 75 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 76 return adoptRef(new ScriptPromiseResolver(v8::Object::New(), isolate)); 77 } 78 79 bool ScriptPromiseResolver::isPending() const 80 { 81 ASSERT(v8::Context::InContext()); 82 return isPendingInternal(); 83 } 84 85 void ScriptPromiseResolver::detach() 86 { 87 ASSERT(v8::Context::InContext()); 88 detachPromise(); 89 reject(v8::Undefined(m_isolate)); 90 m_resolver.clear(); 91 } 92 93 void ScriptPromiseResolver::fulfill(v8::Handle<v8::Value> value) 94 { 95 ASSERT(v8::Context::InContext()); 96 if (!isPendingInternal()) 97 return; 98 V8PromiseCustom::fulfillResolver(m_resolver.newLocal(m_isolate), value, V8PromiseCustom::Asynchronous, m_isolate); 99 m_resolver.clear(); 100 } 101 102 void ScriptPromiseResolver::resolve(v8::Handle<v8::Value> value) 103 { 104 ASSERT(v8::Context::InContext()); 105 if (!isPendingInternal()) 106 return; 107 V8PromiseCustom::resolveResolver(m_resolver.newLocal(m_isolate), value, V8PromiseCustom::Asynchronous, m_isolate); 108 m_resolver.clear(); 109 } 110 111 void ScriptPromiseResolver::reject(v8::Handle<v8::Value> value) 112 { 113 ASSERT(v8::Context::InContext()); 114 if (!isPendingInternal()) 115 return; 116 V8PromiseCustom::rejectResolver(m_resolver.newLocal(m_isolate), value, V8PromiseCustom::Asynchronous, m_isolate); 117 m_resolver.clear(); 118 } 119 120 void ScriptPromiseResolver::fulfill(ScriptValue value) 121 { 122 ASSERT(v8::Context::InContext()); 123 fulfill(value.v8Value()); 124 } 125 126 void ScriptPromiseResolver::resolve(ScriptValue value) 127 { 128 ASSERT(v8::Context::InContext()); 129 resolve(value.v8Value()); 130 } 131 132 void ScriptPromiseResolver::reject(ScriptValue value) 133 { 134 ASSERT(v8::Context::InContext()); 135 reject(value.v8Value()); 136 } 137 138 bool ScriptPromiseResolver::isPendingInternal() const 139 { 140 ASSERT(v8::Context::InContext()); 141 if (m_resolver.isEmpty()) 142 return false; 143 v8::Local<v8::Object> resolver = m_resolver.newLocal(m_isolate); 144 if (V8PromiseCustom::isInternalDetached(resolver)) 145 return false; 146 v8::Local<v8::Object> internal = V8PromiseCustom::getInternal(resolver); 147 V8PromiseCustom::PromiseState state = V8PromiseCustom::getState(internal); 148 return state == V8PromiseCustom::Pending; 149 } 150 151 } // namespace WebCore 152
