1 files changed, 174 insertions, 0 deletions
diff --git a/WebCore/bindings/js/JSDataViewCustom.cpp b/WebCore/bindings/js/JSDataViewCustom.cpp
new file mode 100644
index 0000000..f17e0e1
--- /dev/null
+++ b/WebCore/bindings/js/JSDataViewCustom.cpp
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2010 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:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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"
+
+#if ENABLE(3D_CANVAS) || ENABLE(BLOB)
+
+#include "JSDataView.h"
+
+#include "DataView.h"
+#include "ExceptionCode.h"
+#include "JSArrayBufferViewHelper.h"
+#include <wtf/MathExtras.h>
+
+using namespace JSC;
+
+namespace WebCore {
+
+enum DataViewAccessType {
+    AccessDataViewMemberAsInt8,
+    AccessDataViewMemberAsUint8,
+    AccessDataViewMemberAsFloat32,
+    AccessDataViewMemberAsFloat64
+};
+
+JSValue toJS(ExecState* exec, JSDOMGlobalObject* globalObject, DataView* object)
+{
+    return getDOMObjectWrapper<JSDataView>(exec, globalObject, object);
+}
+
+EncodedJSValue JSC_HOST_CALL JSDataViewConstructor::constructJSDataView(ExecState* exec)
+{
+    if (exec->argument(0).isNull() || !exec->argument(0).isObject())
+        return throwVMTypeError(exec);
+
+    RefPtr<DataView> view = constructArrayBufferViewWithArrayBufferArgument<DataView, char>(exec);
+    if (!view.get()) {
+        setDOMException(exec, INDEX_SIZE_ERR);
+        return JSValue::encode(jsUndefined());
+    }
+
+    JSDataViewConstructor* jsConstructor = static_cast<JSDataViewConstructor*>(exec->callee());
+    return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), view.get())));
+}
+
+static JSValue getDataViewMember(ExecState* exec, DataViewAccessType type)
+{
+    JSValue thisValue = exec->hostThisValue();
+    if (!thisValue.inherits(&JSDataView::s_info))
+        return throwTypeError(exec);
+    JSDataView* castedThis = static_cast<JSDataView*>(asObject(thisValue));
+    DataView* imp = static_cast<DataView*>(castedThis->impl());
+    if (exec->argumentCount() < 1)
+        return throwError(exec, createSyntaxError(exec, "Not enough arguments"));
+    ExceptionCode ec = 0;
+    unsigned byteOffset = exec->argument(0).toUInt32(exec);
+    if (exec->hadException())
+        return jsUndefined();
+
+    bool littleEndian = false;
+    if (exec->argumentCount() > 1 && (type == AccessDataViewMemberAsFloat32 || type == AccessDataViewMemberAsFloat64)) {
+        littleEndian = exec->argument(1).toBoolean(exec);
+        if (exec->hadException())
+            return jsUndefined();
+    }
+
+    JSC::JSValue result;
+    switch (type) {
+    case AccessDataViewMemberAsInt8:
+        result = jsNumber(imp->getInt8(byteOffset, ec));
+        break;
+    case AccessDataViewMemberAsUint8:
+        result = jsNumber(imp->getUint8(byteOffset, ec));
+        break;
+    case AccessDataViewMemberAsFloat32:
+    case AccessDataViewMemberAsFloat64: {
+        double value = (type == AccessDataViewMemberAsFloat32) ? imp->getFloat32(byteOffset, littleEndian, ec) : imp->getFloat64(byteOffset, littleEndian, ec);
+        result = isnan(value) ? JSValue(nonInlineNaN()) : jsNumber(value);
+        break;
+    } default:
+        ASSERT_NOT_REACHED();
+        break;
+    }
+    setDOMException(exec, ec);
+    return result;
+}
+
+JSValue JSC_HOST_CALL JSDataView::getInt8(ExecState* exec)
+{
+    return getDataViewMember(exec, AccessDataViewMemberAsInt8);
+}
+
+JSValue JSC_HOST_CALL JSDataView::getUint8(ExecState* exec)
+{
+    return getDataViewMember(exec, AccessDataViewMemberAsUint8);
+}
+
+JSValue JSC_HOST_CALL JSDataView::getFloat32(ExecState* exec)
+{
+    return getDataViewMember(exec, AccessDataViewMemberAsFloat32);
+}
+
+JSValue JSC_HOST_CALL JSDataView::getFloat64(ExecState* exec)
+{
+    return getDataViewMember(exec, AccessDataViewMemberAsFloat64);
+}
+
+static JSValue setDataViewMember(ExecState* exec, DataViewAccessType type)
+{
+    JSValue thisValue = exec->hostThisValue();
+    if (!thisValue.inherits(&JSDataView::s_info))
+        return throwTypeError(exec);
+    JSDataView* castedThis = static_cast<JSDataView*>(asObject(thisValue));
+    DataView* imp = static_cast<DataView*>(castedThis->impl());
+    if (exec->argumentCount() < 2)
+        return throwError(exec, createSyntaxError(exec, "Not enough arguments"));
+    ExceptionCode ec = 0;
+    unsigned byteOffset = exec->argument(0).toUInt32(exec);
+    if (exec->hadException())
+        return jsUndefined();
+    int value = exec->argument(1).toInt32(exec);
+    if (exec->hadException())
+        return jsUndefined();
+        
+    switch (type) {
+    case AccessDataViewMemberAsInt8:
+        imp->setInt8(byteOffset, static_cast<char>(value), ec);
+        break;
+    case AccessDataViewMemberAsUint8:
+        imp->setUint8(byteOffset, static_cast<unsigned char>(value), ec);
+        break;
+    default:
+        ASSERT_NOT_REACHED();
+        break;
+    }
+    setDOMException(exec, ec);
+    return jsUndefined();
+}
+
+JSValue JSC_HOST_CALL JSDataView::setInt8(ExecState* exec)
+{
+    return setDataViewMember(exec, AccessDataViewMemberAsInt8);
+}
+
+JSValue JSC_HOST_CALL JSDataView::setUint8(ExecState* exec)
+{
+    return setDataViewMember(exec, AccessDataViewMemberAsUint8);
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(3D_CANVAS) || ENABLE(BLOB)