WebGL support.

Source/WebCore/bindings/dart/custom/DartArrayBufferViewCustom.h

+/*
+ * Copyright (C) 2009, 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
+ * 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 DartArrayBufferViewCustom_h
+#define DartArrayBufferViewCustom_h
+
+#include "DartUtilities.h"
+
+#include <dart_api.h>
+
+namespace WebCore {
+
+namespace DartArrayBufferViewInternal {
+
+template<class ArrayClass, class ElementType>
+void constructWebGLArray(Dart_NativeArguments args)
+{
+    DartApiScope dartApiScope;
+    Dart_Handle exception;
+    {
+        Dart_Handle arg1 = Dart_GetNativeArgument(args, 1);
+        RefPtr<ArrayClass> array;
+        if (Dart_IsNumber(arg1)) {
+            ParameterAdapter<int> length(arg1);
+            if (!length.conversionSuccessful()) {
+                exception = length.exception();
+                goto fail;
+            }
+            array = ArrayClass::create(length);
+        } else {
+            ParameterAdapter<Vector<ElementType> > list(arg1);
+            if (!list.conversionSuccessful()) {
+                exception = list.exception();
+                goto fail;
+            }
+            array = ArrayClass::create(list->data(), list->size());
+        }
+        // FIXME: also process 3 argument constructor.
+        DartDOMWrapper::bindDOMObjectToDartWrapper(array.get(), Dart_GetNativeArgument(args, 0));
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+template <class ArrayClass, class DartArrayClass>
+void setWebGLArrayHelper(Dart_NativeArguments args)
+{
+    DartApiScope dartApiScope;
+    Dart_Handle exception;
+    {
+        ArrayClass* receiver = DartDOMWrapper::receiver<ArrayClass>(args);
+        ParameterAdapter<ArrayClass, DartArrayClass> arrayParam(Dart_GetNativeArgument(args, 1));
+        if (!arrayParam.conversionSuccessful()) {
+            exception = arrayParam.exception();
+            goto fail;
+        }
+        ParameterAdapter<int> offsetParam(Dart_GetNativeArgument(args, 2));
+        if (!offsetParam.conversionSuccessful()) {
+            exception = offsetParam.exception();
+            goto fail;
+        }
+
+        receiver->set(arrayParam, offsetParam);
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+template <class ArrayClass, class ElementType>
+void indexGetter(Dart_NativeArguments args)
+{
+    DartApiScope dartApiScope;
+    Dart_Handle exception;
+    {
+        ArrayClass* receiver = DartDOMWrapper::receiver<ArrayClass>(args);
+        const ParameterAdapter<unsigned int> index(Dart_GetNativeArgument(args, 1));
+        if (!index.conversionSuccessful()) {
+            exception = index.exception();
+            goto fail;
+        }
+
+        DartDOMWrapper::returnValue(args, static_cast<ElementType>(receiver->item(index)));

[antonm, 2012/01/18 15:12:23]

do we need this static_cast, just double checking?

[Nikolay, 2012/01/19 13:27:34]

Yes, we do.
On 2012/01/18 15:12:23, antonm wrote:

+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+template <class ArrayClass, class ElementType>
+void indexSetter(Dart_NativeArguments args)
+{
+    DartApiScope dartApiScope;
+    Dart_Handle exception;
+    {
+        ArrayClass* receiver = DartDOMWrapper::receiver<ArrayClass>(args);
+        const ParameterAdapter<unsigned int> index(Dart_GetNativeArgument(args, 1));
+        if (!index.conversionSuccessful()) {
+            exception = index.exception();
+            goto fail;
+        }
+        const ParameterAdapter<double> value(Dart_GetNativeArgument(args, 2));
+        if (!value.conversionSuccessful()) {
+            exception = value.exception();
+            goto fail;
+        }
+
+        receiver->set(index, value);
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+}
+
+}
+#endif // DartArrayBufferViewCustom_h