JavaScriptCore-7600.1.4.9.tar.gz

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

diff --git a/runtime/JSPromise.h b/runtime/JSPromise.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 JSPromise_h
+#define JSPromise_h
+
+#if ENABLE(PROMISES)
+
+#include "JSDestructibleObject.h"
+
+namespace JSC {
+
+class JSPromiseReaction;
+class JSPromiseConstructor;
+
+class JSPromise : public JSDestructibleObject {
+public:
+    typedef JSDestructibleObject Base;
+
+    static JSPromise* create(VM&, JSGlobalObject*, JSPromiseConstructor*);
+    static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
+
+    DECLARE_INFO;
+
+    enum class Status {
+        Unresolved,
+        HasResolution,
+        HasRejection
+    };
+
+    Status status() const
+    {
+        return m_status;
+    }
+
+    JSValue result() const
+    {
+        ASSERT(m_status != Status::Unresolved);
+        return m_result.get();
+    }
+
+    JSPromiseConstructor* constructor() const
+    {
+        return m_constructor.get();
+    }
+
+    void reject(VM&, JSValue);
+    void resolve(VM&, JSValue);
+
+    void appendResolveReaction(VM&, JSPromiseReaction*);
+    void appendRejectReaction(VM&, JSPromiseReaction*);
+
+private:
+    JSPromise(VM&, Structure*);
+    void finishCreation(VM&, JSPromiseConstructor*);
+    static const unsigned StructureFlags = OverridesVisitChildren | JSObject::StructureFlags;
+    static void destroy(JSCell*);
+    static void visitChildren(JSCell*, SlotVisitor&);
+
+    Status m_status;
+    WriteBarrier<Unknown> m_result;
+    WriteBarrier<JSPromiseConstructor> m_constructor;
+    Vector<WriteBarrier<JSPromiseReaction>> m_resolveReactions;
+    Vector<WriteBarrier<JSPromiseReaction>> m_rejectReactions;
+};
+
+} // namespace JSC
+
+#endif // ENABLE(PROMISES)
+
+#endif // JSPromise_h