1 files changed, 95 insertions, 0 deletions
diff --git a/src/qml/jsruntime/qv4stringiterator.cpp b/src/qml/jsruntime/qv4stringiterator.cpp
new file mode 100644
index 0000000000..abdd0ee051
--- /dev/null
+++ b/src/qml/jsruntime/qv4stringiterator.cpp
@@ -0,0 +1,95 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 Crimson AS <[email protected]>
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qv4iterator_p.h>
+#include <private/qv4stringiterator_p.h>
+#include <private/qv4symbol_p.h>
+
+using namespace QV4;
+
+DEFINE_OBJECT_VTABLE(StringIteratorObject);
+
+void StringIteratorPrototype::init(ExecutionEngine *e)
+{
+    defineDefaultProperty(QStringLiteral("next"), method_next, 0);
+
+    Scope scope(e);
+    ScopedString val(scope, e->newString(QLatin1String("String Iterator")));
+    defineReadonlyConfigurableProperty(e->symbol_toStringTag(), val);
+}
+
+ReturnedValue StringIteratorPrototype::method_next(const FunctionObject *b, const Value *that, const Value *, int)
+{
+    Scope scope(b);
+    const StringIteratorObject *thisObject = that->as<StringIteratorObject>();
+    if (!thisObject)
+        return scope.engine->throwTypeError(QLatin1String("Not an String Iterator instance"));
+
+    ScopedString s(scope, thisObject->d()->iteratedString);
+    if (!s) {
+        QV4::Value undefined = Primitive::undefinedValue();
+        return IteratorPrototype::createIterResultObject(scope.engine, undefined, ScopedValue(scope, true);
+    }
+
+    quint32 index = thisObject->d()->nextIndex;
+
+    QString str = s->toQString();
+    quint32 len = str.length();
+
+    if (index >= len) {
+        thisObject->d()->iteratedString.set(scope.engine, nullptr);
+        QV4::Value undefined = Primitive::undefinedValue();
+        return IteratorPrototype::createIterResultObject(scope.engine, undefined, ScopedValue(scope, true);
+    }
+
+    QChar ch = str.at(index);
+    int num = 1;
+    if (ch.unicode() >= 0xd800 && ch.unicode() <= 0xdbff && index + 1 != len) {
+        ch = str.at(index + 1);
+        if (ch.unicode() >= 0xdc00 && ch.unicode() <= 0xdfff)
+            num = 2;
+    }
+
+    thisObject->d()->nextIndex += num;
+
+    ScopedString resultString(scope, scope.engine->newString(s->toQString().mid(index, num)));
+    return IteratorPrototype::createIterResultObject(scope.engine, resultString, ScopedValue(scope, false);
+}
+