JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / runtime / JSPromiseDeferred.h

diff --git a/runtime/JSPromiseDeferred.h b/runtime/JSPromiseDeferred.h
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+/*
+ * Copyright (C) 2013 Apple 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
+ */
+
+#ifndef JSPromiseDeferred_h
+#define JSPromiseDeferred_h
+
+#if ENABLE(PROMISES)
+
+#include "JSCell.h"
+#include "Structure.h"
+
+namespace JSC {
+
+class JSPromiseDeferred : public JSCell {
+public:
+    typedef JSCell Base;
+
+    JS_EXPORT_PRIVATE static JSPromiseDeferred* create(ExecState*, JSGlobalObject*);
+    JS_EXPORT_PRIVATE static JSPromiseDeferred* create(VM&, JSObject* promise, JSValue resolve, JSValue reject);
+
+    static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+    {
+        return Structure::create(vm, globalObject, prototype, TypeInfo(CompoundType, StructureFlags), info());
+    }
+
+    static const bool hasImmortalStructure = true;
+
+    DECLARE_EXPORT_INFO;
+
+    JSObject* promise() const { return m_promise.get(); }
+    JSValue resolve() const { return m_resolve.get(); }
+    JSValue reject() const { return m_reject.get(); }
+
+private:
+    JSPromiseDeferred(VM&);
+    void finishCreation(VM&, JSObject*, JSValue, JSValue);
+    static const unsigned StructureFlags = OverridesVisitChildren | Base::StructureFlags;
+    static void visitChildren(JSCell*, SlotVisitor&);
+
+    WriteBarrier<JSObject> m_promise;
+    WriteBarrier<Unknown> m_resolve;
+    WriteBarrier<Unknown> m_reject;
+};
+
+enum ThenableStatus {
+    WasAThenable,
+    NotAThenable
+};
+
+JSValue createJSPromiseDeferredFromConstructor(ExecState*, JSValue constructor);
+ThenableStatus updateDeferredFromPotentialThenable(ExecState*, JSValue, JSPromiseDeferred*);
+
+void performDeferredResolve(ExecState*, JSPromiseDeferred*, JSValue argument);
+void performDeferredReject(ExecState*, JSPromiseDeferred*, JSValue argument);
+
+JSValue abruptRejection(ExecState*, JSPromiseDeferred*);
+
+} // namespace JSC
+
+#endif // ENABLE(PROMISES)
+
+#endif // JSPromiseDeferred_h