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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "bindings/core/v8/ScriptPromise.h"
#include "bindings/core/v8/ExceptionMessages.h"
#include "bindings/core/v8/ExceptionState.h"
#include "bindings/core/v8/ToV8.h"
#include "bindings/core/v8/V8ThrowException.h"
#include "core/dom/DOMException.h"
#include <v8.h>
namespace blink {
namespace {
struct WithScriptState {
// Used by ToV8Value<WithScriptState, ScriptState*>.
static v8::Handle<v8::Object> getCreationContext(ScriptState* scriptState)
{
return scriptState->context()->Global();
}
};
} // namespace
ScriptPromise::InternalResolver::InternalResolver(ScriptState* scriptState)
: m_resolver(scriptState, v8::Promise::Resolver::New(scriptState->isolate())) { }
v8::Local<v8::Promise> ScriptPromise::InternalResolver::v8Promise() const
{
if (m_resolver.isEmpty())
return v8::Local<v8::Promise>();
return m_resolver.v8Value().As<v8::Promise::Resolver>()->GetPromise();
}
ScriptPromise ScriptPromise::InternalResolver::promise() const
{
if (m_resolver.isEmpty())
return ScriptPromise();
return ScriptPromise(m_resolver.scriptState(), v8Promise());
}
void ScriptPromise::InternalResolver::resolve(v8::Local<v8::Value> value)
{
if (m_resolver.isEmpty())
return;
m_resolver.v8Value().As<v8::Promise::Resolver>()->Resolve(value);
clear();
}
void ScriptPromise::InternalResolver::reject(v8::Local<v8::Value> value)
{
if (m_resolver.isEmpty())
return;
m_resolver.v8Value().As<v8::Promise::Resolver>()->Reject(value);
clear();
}
ScriptPromise::ScriptPromise(ScriptState* scriptState, v8::Handle<v8::Value> value)
: m_scriptState(scriptState)
{
if (value.IsEmpty())
return;
if (!value->IsPromise()) {
m_promise = ScriptValue(scriptState, v8::Handle<v8::Value>());
V8ThrowException::throwTypeError(scriptState->isolate(), "the given value is not a Promise");
return;
}
m_promise = ScriptValue(scriptState, value);
}
ScriptPromise ScriptPromise::then(v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected)
{
if (m_promise.isEmpty())
return ScriptPromise();
v8::Local<v8::Object> promise = m_promise.v8Value().As<v8::Object>();
ASSERT(promise->IsPromise());
// Return this Promise if no handlers are given.
// In fact it is not the exact bahavior of Promise.prototype.then
// but that is not a problem in this case.
v8::Local<v8::Promise> resultPromise = promise.As<v8::Promise>();
if (!onFulfilled.IsEmpty()) {
resultPromise = resultPromise->Then(onFulfilled);
if (resultPromise.IsEmpty()) {
// v8::Promise::Then may return an empty value, for example when
// the stack is exhausted.
return ScriptPromise();
}
}
if (!onRejected.IsEmpty())
resultPromise = resultPromise->Catch(onRejected);
return ScriptPromise(m_scriptState.get(), resultPromise);
}
ScriptPromise ScriptPromise::cast(ScriptState* scriptState, const ScriptValue& value)
{
return ScriptPromise::cast(scriptState, value.v8Value());
}
ScriptPromise ScriptPromise::cast(ScriptState* scriptState, v8::Handle<v8::Value> value)
{
if (value.IsEmpty())
return ScriptPromise();
if (value->IsPromise()) {
return ScriptPromise(scriptState, value);
}
InternalResolver resolver(scriptState);
ScriptPromise promise = resolver.promise();
resolver.resolve(value);
return promise;
}
ScriptPromise ScriptPromise::reject(ScriptState* scriptState, const ScriptValue& value)
{
return ScriptPromise::reject(scriptState, value.v8Value());
}
ScriptPromise ScriptPromise::reject(ScriptState* scriptState, v8::Handle<v8::Value> value)
{
if (value.IsEmpty())
return ScriptPromise();
InternalResolver resolver(scriptState);
ScriptPromise promise = resolver.promise();
resolver.reject(value);
return promise;
}
ScriptPromise ScriptPromise::rejectWithDOMException(ScriptState* scriptState, PassRefPtrWillBeRawPtr<DOMException> exception)
{
ASSERT(scriptState->isolate()->InContext());
return reject(scriptState, toV8(exception, scriptState->context()->Global(), scriptState->isolate()));
}
v8::Local<v8::Promise> ScriptPromise::rejectRaw(v8::Isolate* isolate, v8::Handle<v8::Value> value)
{
if (value.IsEmpty())
return v8::Local<v8::Promise>();
v8::Local<v8::Promise::Resolver> resolver = v8::Promise::Resolver::New(isolate);
v8::Local<v8::Promise> promise = resolver->GetPromise();
resolver->Reject(value);
return promise;
}
} // namespace blink
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