Tue Aug 5 16:08:45 PDT 2014

Source/bindings/dart/DartNativeExtensions.cpp

 /*
- * Copyright (C) 2006-2011 Google Inc. All rights reserved.
+ * Copyright (C) 2014 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.
  */
 
 #include "config.h"
-#include "bindings/dart/DartCallback.h"
 
-#include "bindings/dart/DartController.h"
-#include "bindings/dart/DartDOMData.h"
+#include "bindings/dart/DartNativeExtensions.h"
+
 #include "bindings/dart/DartUtilities.h"
 
 namespace WebCore {
 
-DartCallback::DartCallback(Dart_Handle object, Dart_Handle& exception)
+#if defined(ENABLE_DART_NATIVE_EXTENSIONS)
+Dart_Handle DartNativeExtensions::loadExtension(const String& url, Dart_Handle parentLibrary)
 {
-    if (!Dart_IsClosure(object)) {
-        exception = Dart_NewStringFromCString("Callback must be a function");
-        m_callback = 0;
-        return;
+    String userUri = url.substring(String("dart-ext:").length());
+
+    String name;
+    String path;
+    size_t index = userUri.reverseFind('/');
+    if (index == kNotFound) {
+        name = userUri;
+        path = "./";
+    } else if (index == userUri.length() - 1) {
+        return Dart_NewApiError("Extension name missing.");
+    } else {
+        name = userUri.substring(index + 1);
+        path = userUri.substring(0, index + 1);
     }
-    m_callback = Dart_NewPersistentHandle(object);
+
+    void* libraryHandle = 0;
+    Dart_Handle result = loadExtensionLibrary(path, name, &libraryHandle);
+    if (Dart_IsError(result)) {
+        return result;
+    }
+
+    String initFunctionName = name + "_Init";
+
+    typedef Dart_Handle (*InitFunctionType)(Dart_Handle library);
+    InitFunctionType fn;
+    result = resolveSymbol(libraryHandle, initFunctionName, reinterpret_cast<void**>(&fn));
+    if (Dart_IsError(result)) {
+        return result;
+    }
+
+    return (*fn)(parentLibrary);
+}
+#else
+Dart_Handle DartNativeExtensions::loadExtension(const String& url, Dart_Handle parentLibrary)
+{
+    return Dart_NewApiError("Native extensions are not enabled.");
+}
+#endif // defined(ENABLE_DART_NATIVE_EXTENSIONS)
+
 }
 
-DartCallback::~DartCallback()
-{
-    if (!m_callback || !isIsolateAlive())
-        return;
 
-    DartIsolateScope scope(isolate());
-    Dart_DeletePersistentHandle(m_callback);
-}
-
-bool DartCallback::handleEvent(int argc, Dart_Handle* argv)
-{
-    ASSERT(isolate() == Dart_CurrentIsolate());
-    ASSERT(m_callback);
-
-    ExecutionContext* context = DartDOMData::current()->scriptExecutionContext();
-    DartController* dartController = DartController::retrieve(context);
-
-    Dart_Handle result = dartController->callFunction(Dart_HandleFromPersistent(m_callback), argc, argv);
-    if (Dart_IsError(result)) {
-        DartUtilities::reportProblem(context, result);
-        return false;
-    }
-
-    return true;
-}
-
-}