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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/ScriptPromiseResolver.h"
     33 
     34 #include "bindings/v8/ScriptState.h"
     35 #include "bindings/v8/ScriptValue.h"
     36 #include "bindings/v8/V8Binding.h"
     37 #include "bindings/v8/V8DOMWrapper.h"
     38 #include "bindings/v8/custom/V8PromiseCustom.h"
     39 
     40 #include <v8.h>
     41 
     42 namespace WebCore {
     43 
     44 ScriptPromiseResolver::ScriptPromiseResolver(ScriptPromise promise)
     45     : m_isolate(promise.isolate())
     46     , m_promise(promise)
     47 {
     48 }
     49 
     50 ScriptPromiseResolver::~ScriptPromiseResolver()
     51 {
     52     // We don't call "reject" here because it requires a caller
     53     // to be in a v8 context.
     54 
     55     m_promise.clear();
     56 }
     57 
     58 PassRefPtr<ScriptPromiseResolver> ScriptPromiseResolver::create(ScriptPromise promise, ExecutionContext* context)
     59 {
     60     ASSERT(promise.isolate()->InContext());
     61     ASSERT(context);
     62     return adoptRef(new ScriptPromiseResolver(promise));
     63 }
     64 
     65 PassRefPtr<ScriptPromiseResolver> ScriptPromiseResolver::create(ScriptPromise promise)
     66 {
     67     ASSERT(promise.isolate()->InContext());
     68     return adoptRef(new ScriptPromiseResolver(promise));
     69 }
     70 
     71 bool ScriptPromiseResolver::isPending() const
     72 {
     73     ASSERT(m_isolate->InContext());
     74     if (m_promise.hasNoValue())
     75         return false;
     76     v8::Local<v8::Object> promise = m_promise.v8Value().As<v8::Object>();
     77     v8::Local<v8::Object> internal = V8PromiseCustom::getInternal(promise);
     78     V8PromiseCustom::PromiseState state = V8PromiseCustom::getState(internal);
     79     return state == V8PromiseCustom::Pending;
     80 }
     81 
     82 void ScriptPromiseResolver::resolve(v8::Handle<v8::Value> value)
     83 {
     84     ASSERT(m_isolate->InContext());
     85     if (!isPending())
     86         return;
     87     V8PromiseCustom::resolve(m_promise.v8Value().As<v8::Object>(), value, m_isolate);
     88     m_promise.clear();
     89 }
     90 
     91 void ScriptPromiseResolver::reject(v8::Handle<v8::Value> value)
     92 {
     93     ASSERT(m_isolate->InContext());
     94     if (!isPending())
     95         return;
     96     V8PromiseCustom::reject(m_promise.v8Value().As<v8::Object>(), value, m_isolate);
     97     m_promise.clear();
     98 }
     99 
    100 void ScriptPromiseResolver::resolve(ScriptValue value)
    101 {
    102     ASSERT(m_isolate->InContext());
    103     resolve(value.v8Value());
    104 }
    105 
    106 void ScriptPromiseResolver::reject(ScriptValue value)
    107 {
    108     ASSERT(m_isolate->InContext());
    109     reject(value.v8Value());
    110 }
    111 
    112 } // namespace WebCore
    113