Implement StringIterator

Add support for String.prototype[Symbol.iterator] and the
StringIterator object.

Change-Id: I72c4f988e4f363be1af51f9cc5f8e83af43cd151
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 103 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4stringiterator_p.h b/src/qml/jsruntime/qv4stringiterator_p.h
new file mode 100644
index 0000000000..672ccc9963
--- /dev/null
+++ b/src/qml/jsruntime/qv4stringiterator_p.h
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QV4STRINGITERATOR_P_H
+#define QV4STRINGITERATOR_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qv4object_p.h"
+#include "qv4string_p.h"
+
+QT_BEGIN_NAMESPACE
+
+
+namespace QV4 {
+
+namespace Heap {
+
+#define StringIteratorObjectMembers(class, Member) \
+    Member(class, Pointer, String *, iteratedString) \
+    Member(class, NoMark, quint32, nextIndex)
+
+DECLARE_HEAP_OBJECT(StringIteratorObject, Object) {
+    DECLARE_MARKOBJECTS(StringIteratorObject);
+    void init(String *str, QV4::ExecutionEngine *engine)
+    {
+        Object::init();
+        this->iteratedString.set(engine, str);
+        this->nextIndex = 0;
+    }
+};
+
+}
+
+struct StringIteratorPrototype : Object
+{
+    V4_PROTOTYPE(iteratorPrototype)
+    void init(ExecutionEngine *engine);
+
+    static ReturnedValue method_next(const FunctionObject *b, const Value *thisObject, const Value *argv, int argc);
+};
+
+struct StringIteratorObject : Object
+{
+    V4_OBJECT2(StringIteratorObject, Object)
+    Q_MANAGED_TYPE(StringIteratorObject)
+    V4_PROTOTYPE(stringIteratorPrototype)
+
+    void init(ExecutionEngine *engine);
+};
+
+
+}
+
+QT_END_NAMESPACE
+
+#endif // QV4ARRAYITERATOR_P_H
+