Introduce Promise mapping to the IDL generator

Source/bindings/v8/ScriptPromise.h

Index: Source/bindings/v8/ScriptPromise.h
diff --git a/Source/core/animation/AnimatableUnknown.h b/Source/bindings/v8/ScriptPromise.h
similarity index 57%
copy from Source/core/animation/AnimatableUnknown.h
copy to Source/bindings/v8/ScriptPromise.h
index c136380f5895896249ed7d6e02356791d562c6dc..02f0a227b39aa701b9e539d8c07e953d79d9e451 100644
--- a/Source/core/animation/AnimatableUnknown.h
+++ b/Source/bindings/v8/ScriptPromise.h
@@ -28,52 +28,75 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef AnimatableUnknown_h
-#define AnimatableUnknown_h
+#ifndef ScriptPromise_h
+#define ScriptPromise_h
 
-#include "core/animation/AnimatableValue.h"
+#include "bindings/v8/ScopedPersistent.h"
+#include "bindings/v8/ScriptValue.h"
+#include "bindings/v8/V8ScriptRunner.h"
+#include <v8.h>
 
 namespace WebCore {
 
-class AnimatableUnknown : public AnimatableValue {
+// ScriptPromise is the class for representing Promise values in C++ world.
+// ScriptPromise holds a Promise.
+// So holding a ScriptPromise as a member variable in DOM object causes
+// memory leaks since it has a reference from C++ to V8.
+//
+class ScriptPromise {
 public:
-    virtual ~AnimatableUnknown() { }
+    ScriptPromise()
+        : m_promise()
+    {
+    }
 
-    static PassRefPtr<AnimatableUnknown> create(PassRefPtr<CSSValue> value)
+    explicit ScriptPromise(ScriptValue promise)
+        : m_promise(promise)
     {
-        return adoptRef(new AnimatableUnknown(value));
+        ASSERT(!m_promise.hasNoValue());
     }
 
-    PassRefPtr<CSSValue> toCSSValue() const { return m_value; }
+    explicit ScriptPromise(v8::Handle<v8::Value> promise)
+        : m_promise(promise)
+    {
+        ASSERT(!m_promise.hasNoValue());
+    }
 
-protected:
-    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const OVERRIDE
+    bool isObject() const
     {
-        return defaultInterpolateTo(this, value, fraction);
+        return m_promise.isObject();
     }
 
-    virtual PassRefPtr<AnimatableValue> addWith(const AnimatableValue* value) const OVERRIDE
+    bool isNull() const
     {
-        return defaultAddWith(this, value);
+        return m_promise.isNull();
     }
 
-private:
-    explicit AnimatableUnknown(PassRefPtr<CSSValue> value)
-        : AnimatableValue(TypeUnknown)
-        , m_value(value)
+    bool isUndefinedOrNull() const
     {
-        ASSERT(m_value);
+        return m_promise.isUndefined() || m_promise.isNull();
     }
 
-    const RefPtr<CSSValue> m_value;
-};
+    v8::Handle<v8::Value> v8Value() const
+    {
+        return m_promise.v8Value();
+    }
 
-inline const AnimatableUnknown* toAnimatableUnknown(const AnimatableValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(value && value->isUnknown());
-    return static_cast<const AnimatableUnknown*>(value);
-}
+    bool hasNoValue() const
+    {
+        return m_promise.hasNoValue();
+    }
+
+    void clear()
+    {
+        m_promise.clear();
+    }
+
+private:
+    ScriptValue m_promise;
+};
 
 } // namespace WebCore
 
-#endif // AnimatableUnknown_h
+
+#endif // ScriptPromise_h