Dart bindings for WebKit

Source/WebCore/bindings/dart/DartUtilities.h

+// Copyright 2011, 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
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 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 DartUtilities_h
+#define DartUtilities_h
+
+#include "MessagePort.h"
+
+#include <dart_api.h>
+#include <wtf/HashMap.h>
+#include <wtf/text/WTFString.h>
+
+namespace WebCore {
+
+class EventListener;
+class EventTarget;
+class Frame;
+class ScriptArguments;
+class ScriptCallStack;
+class ScriptExecutionContext;
+class SerializedScriptValue;
+
+typedef HashMap<void*, Dart_Handle> DartDOMMap;
+
+class DartUtilities {
+public:
+    enum ConversionFlag {
+        ConvertNone = 0,
+        ConvertNullToEmptyString = 1
+    };
+
+    static const char* domLibraryName;
+
+    static PassRefPtr<StringImpl> toStringImpl(Dart_Handle, ConversionFlag flag, Dart_Handle& exception);
+    // FIXME: we should get rid of this one in favour of toStringImpl.
+    static String dartStringToString(Dart_Handle object)
+    {
+        Dart_Handle exception = 0;
+        RefPtr<StringImpl> impl = toStringImpl(object, ConvertNone, exception);
+        ASSERT(!exception);
+        return String(impl.release());
+    }
+    static Dart_Handle stringToDartString(const String&);
+    static Dart_Handle stringToDartString(const AtomicString&);
+
+    static int64_t toInteger(Dart_Handle object, Dart_Handle& exception);
+    static int64_t toInteger(Dart_Handle object);
+    static double toDouble(Dart_Handle object, Dart_Handle& exception);
+    static double toDouble(Dart_Handle object);
+    static bool toBool(Dart_Handle object, Dart_Handle& exception);
+    static bool toBool(Dart_Handle object);
+    static PassRefPtr<EventListener> toEventListener(Dart_Handle object, Dart_Handle& exception);
+    static PassRefPtr<SerializedScriptValue> toSerializedScriptValue(Dart_Handle object, Dart_Handle& exception);
+    static PassRefPtr<EventTarget> toEventTarget(Dart_Handle object, Dart_Handle& exception);
+
+    static void toMessagePortArray(Dart_Handle object, MessagePortArray&, Dart_Handle& exception);
+
+    static void registerIsolateContext(Dart_Isolate, ScriptExecutionContext*);
+    static ScriptExecutionContext* isolateContext(Dart_Isolate);
+    static void unregisterIsolateContext(Dart_Isolate);
+    static bool isFullDomIsolate(Dart_Isolate);
+
+    static DOMWindow* domWindowForIsolate(Dart_Isolate);
+    static DOMWindow* domWindowForCurrentIsolate();
+
+    static Dart_Handle domLibraryForCurrentIsolate();
+    static Dart_Handle pageLibraryForCurrentIsolate();
+
+    static DartDOMMap* domMapForIsolate(Dart_Isolate);
+    static DartDOMMap* domMapForCurrentIsolate();
+
+    static int* recursionForIsolate(Dart_Isolate);
+    static int* recursionForCurrentIsolate();
+
+    static ScriptExecutionContext* scriptExecutionContext();
+
+    static bool processingUserGesture();
+
+    static PassRefPtr<ScriptArguments> createScriptArguments(Dart_Handle argument);
+    static PassRefPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize);
+
+    static void reportProblem(ScriptExecutionContext*, Dart_Handle);
+
+    static Dart_Handle invalidNumberOfArgumentsException()
+    {
+        return Dart_NewString("Invalid number of arguments");
+    }
+
+    static Dart_Handle conditionalFunctionalityException()
+    {
+        return Dart_NewString("Ooops, this functionality is not enabled in this browser");
+    }
+
+    static Dart_Handle notImplementedException()
+    {
+        Dart_Handle library = Dart_LookupLibrary(Dart_NewString(domLibraryName));
+        ASSERT(!Dart_IsError(library));
+        Dart_Handle result = Dart_InvokeStatic(library, Dart_NewString("Utils"), Dart_NewString("makeNotImplementedException"), 0, 0);
+        ASSERT(!Dart_IsError(result));
+        return result;
+    }
+
+    static Dart_Handle domDisabledException()
+    {
+        return Dart_NewString("DOM access is not enabled in this isolate");
+    }
+};
+
+class DartApiScope {
+public:
+    DartApiScope() { Dart_EnterScope(); }
+    ~DartApiScope() { Dart_ExitScope(); }
+};
+
+#define DART_UNIMPLEMENTED() Dart_ThrowException(DartUtilities::notImplementedException());
+
+} // namespace WebCore
+
+#endif // DartUtilities_h