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Source/bindings/dart/DartHandleProxy.h

 /*
  * Copyright (C) 2012 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 13 matching lines @@
  * 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 DartHandleProxy_h
 #define DartHandleProxy_h
 
+#include "bindings/dart/DartUtilities.h"
+
 #include <dart_api.h>
+#include <dart_debugger_api.h>
 #include <dart_mirrors_api.h>
 #include <v8.h>
 
 namespace WebCore {
 
 class Node;
+class DartScriptValue;
 
 class DartHandleProxy {
 public:
     static v8::Handle<v8::Value> create(Dart_Handle value);
     static v8::Handle<v8::Value> createTypeProxy(Dart_Handle value, bool showStatics);
     static v8::Handle<v8::Value> createLibraryProxy(Dart_Handle value, int32_t libraryId, Dart_Handle prefix);
     static v8::Handle<v8::Value> createLocalScopeProxy(Dart_Handle localVariables);
 
     static bool isDartProxy(v8::Handle<v8::Value>);
     static const char* getJavaScriptType(v8::Handle<v8::Value>);
     static Node* toNativeNode(v8::Handle<v8::Value>);
+    static Dart_Handle unwrapValue(v8::Handle<v8::Value>);
+
+};
+
+/**
+ * Helper class to manage all scopes that must be entered to safely invoke Dart
+ * code.
+ */
+class DartScopes {
+private:
+    DartScriptValue* scriptValue;
+    DartIsolateScope scope;
+    DartApiScope apiScope;
+    Dart_ExceptionPauseInfo previousPauseInfo;
+
+public:
+    Dart_Handle handle;
+
+    DartScopes(v8::Local<v8::Object> v8Handle);
+    ~DartScopes();
 };
 
 }
 
 #endif // DartHandleProxy_h