Implement ArrayBuffer

This is the first class required to support typed
arrays in our JS engine.

Change-Id: I0fe1e1ca430769c171912dda207cfae772e9b9db
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4arraybuffer_p.h b/src/qml/jsruntime/qv4arraybuffer_p.h
new file mode 100644
index 0000000000..57ee34e570
--- /dev/null
+++ b/src/qml/jsruntime/qv4arraybuffer_p.h
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QV4ARRAYBUFFER_H
+#define QV4ARRAYBUFFER_H
+
+#include "qv4object_p.h"
+#include "qv4functionobject_p.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace QV4 {
+
+struct ArrayBufferCtor: FunctionObject
+{
+    struct Data : FunctionObject::Data {
+        Data(ExecutionContext *scope);
+    };
+
+    V4_OBJECT(FunctionObject)
+
+    static ReturnedValue construct(Managed *m, CallData *callData);
+    static ReturnedValue call(Managed *that, CallData *callData);
+
+    static ReturnedValue method_isView(CallContext *ctx);
+
+};
+
+struct ArrayBuffer : Object
+{
+    struct Data : Object::Data {
+        Data(ExecutionEngine *e, int length);
+        QTypedArrayData<char> *data;
+    };
+    V4_OBJECT(Object)
+
+    QByteArray asByteArray() const;
+    uint byteLength() const { return d()->data->size; }
+    char *data() {
+        // ### detach if refcount > 1
+        return d()->data->data();
+    }
+    const char *constData() {
+        // ### detach if refcount > 1
+        return d()->data->data();
+    }
+
+    static void destroy(Managed *m);
+};
+
+struct ArrayBufferPrototype: Object
+{
+    void init(ExecutionEngine *engine, Object *ctor);
+
+    static ReturnedValue method_get_byteLength(CallContext *ctx);
+    static ReturnedValue method_slice(CallContext *ctx);
+};
+
+
+} // namespace QV4
+
+QT_END_NAMESPACE
+
+#endif