Introduce Promise mapping to the IDL generator

Source/bindings/v8/ScriptPromise.h

 /*
  * 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
@@ skipping 10 matching lines @@
  * 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.
  */
 
-#ifndef GCObservation_h
-#define GCObservation_h
+#ifndef ScriptPromise_h
+#define ScriptPromise_h
 
 #include "bindings/v8/ScopedPersistent.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
+#include "bindings/v8/ScriptValue.h"
+#include "bindings/v8/V8ScriptRunner.h"
 #include <v8.h>
 
 namespace WebCore {
 
-class GCObservation : public RefCounted<GCObservation> {
+class ScriptPromise {

[yhirano, 2013/09/02 11:58:17]

Can ScriptPromise be a subclass of ScriptValue?

[yusukesuzuki, 2013/09/03 08:33:11]

Done.

[yusukesuzuki, 2013/09/04 06:37:00]

ScriptPromise may have different semantics from ScriptValue in the future.
So I've reverted the change of making ScriptPromise a subclass of ScriptValue.

 public:
-    static PassRefPtr<GCObservation> create(v8::Handle<v8::Value> observedValue) { return adoptRef(new GCObservation(observedValue)); }
-    ~GCObservation() { }
+    ScriptPromise()
+        : m_promise()
+    {
+    }
 
-    // Caution: It is only feasible to determine whether an object was
-    // "near death"; it may have been kept alive through a weak
-    // handle. After reaching near-death, having been collected is the
-    // common case.
-    bool wasCollected() const { return m_collected; }
-    void setWasCollected();
+    explicit ScriptPromise(ScriptValue promise)
+        : m_promise(promise)
+    {
+        ASSERT(!m_promise.hasNoValue());
+    }
+
+    explicit ScriptPromise(v8::Handle<v8::Value> promise)
+        : m_promise(promise)
+    {
+        ASSERT(!m_promise.hasNoValue());
+    }
+
+    bool isObject() const
+    {
+        return m_promise.isObject();
+    }
+
+    bool isNull() const
+    {
+        return m_promise.isNull();
+    }
+
+    bool isUndefinedOrNull() const
+    {
+        return m_promise.isUndefined() || m_promise.isNull();
+    }
+
+    v8::Handle<v8::Value> v8Value() const
+    {
+        return m_promise.v8Value();
+    }
+
+    void clear()
+    {
+        m_promise.clear();
+    }
 
 private:
-    explicit GCObservation(v8::Handle<v8::Value>);
-
-    ScopedPersistent<v8::Value> m_observed;
-    bool m_collected;
+    ScriptValue m_promise;

[haraken, 2013/09/02 21:44:21]

Why can't you use ScopedPersistent?

 };
 
-}
+} // namespace WebCore
 
-#endif // GCObservation_h
+
+#endif // ScriptPromise_h