Source/bindings/v8/ScriptPromise.cpp

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#include "config.h"
#include "bindings/v8/ScriptPromise.h"

#include "bindings/v8/V8Binding.h"
#include "bindings/v8/V8DOMWrapper.h"
#include "bindings/v8/custom/V8PromiseCustom.h"

#include <v8.h>

namespace WebCore {

ScriptPromise::ScriptPromise(v8::Handle<v8::Value> value, v8::Isolate* isolate)
{
    if (value.IsEmpty() || !V8PromiseCustom::isPromise(value, isolate)) {
        m_promise = ScriptValue(v8::Handle<v8::Value>(), isolate);
        V8ThrowException::throwTypeError("the given value is not a Promise", isolate);
        return;
    }
    m_promise = ScriptValue(value, isolate);
}

ScriptPromise ScriptPromise::then(PassOwnPtr<ScriptFunction> onFulfilled, PassOwnPtr<ScriptFunction> onRejected)
{
    if (m_promise.hasNoValue() || !m_promise.isObject())
        return ScriptPromise();
    v8::Handle<v8::Object> promise = m_promise.v8Value().As<v8::Object>();
    return ScriptPromise(V8PromiseCustom::then(promise, adoptByGarbageCollector(onFulfilled), adoptByGarbageCollector(onRejected), isolate()), isolate());
}

ScriptPromise ScriptPromise::createPending()
{
    v8::Isolate* isolate = v8::Isolate::GetCurrent();
    ASSERT(isolate->InContext());
    v8::Handle<v8::Object> promise = V8PromiseCustom::createPromise(v8::Object::New(isolate), isolate);
    return ScriptPromise(promise, isolate);
}

ScriptPromise ScriptPromise::createPending(ExecutionContext* context)
{
    ASSERT(context);
    v8::Isolate* isolate = toIsolate(context);
    ASSERT(isolate->InContext());
    v8::Handle<v8::Context> v8Context = toV8Context(context, DOMWrapperWorld::current(isolate));
    v8::Handle<v8::Object> creationContext = v8Context.IsEmpty() ? v8::Object::New(isolate) : v8Context->Global();
    v8::Handle<v8::Object> promise = V8PromiseCustom::createPromise(creationContext, isolate);
    return ScriptPromise(promise, isolate);
}

ScriptPromise ScriptPromise::cast(const ScriptValue& value)
{
    if (value.hasNoValue())
        return ScriptPromise();
    v8::Local<v8::Value> v8Value(value.v8Value());
    v8::Isolate* isolate = value.isolate();
    if (V8PromiseCustom::isPromise(v8Value, isolate)) {
        return ScriptPromise(v8Value, isolate);
    }
    return ScriptPromise(V8PromiseCustom::toPromise(v8Value, isolate), isolate);
}

} // namespace WebCore