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diff --git a/sources/shiboken6/ApiExtractor/codesnip.cpp b/sources/shiboken6/ApiExtractor/codesnip.cpp
new file mode 100644
index 000000000..3867fc5bf
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+++ b/sources/shiboken6/ApiExtractor/codesnip.cpp
@@ -0,0 +1,105 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt for Python.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** 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-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "codesnip.h"
+
+#include "qtcompat.h"
+#include "exception.h"
+#include "typedatabase.h"
+
+#include <QtCore/QDebug>
+
+using namespace Qt::StringLiterals;
+
+static inline QString callOperator() { return QStringLiteral("operator()"); }
+
+QString TemplateInstance::expandCode() const
+{
+    TemplateEntry *templateEntry = TypeDatabase::instance()->findTemplate(m_name);
+    if (!templateEntry) {
+        const QString m = u"<insert-template> referring to non-existing template '"_s
+                          + m_name + u"'."_s;
+        throw Exception(m);
+    }
+
+    QString code = templateEntry->code();
+    for (auto it = replaceRules.cbegin(), end = replaceRules.cend(); it != end; ++it)
+        code.replace(it.key(), it.value());
+    while (!code.isEmpty() && code.at(code.size() - 1).isSpace())
+        code.chop(1);
+    QString result = u"// TEMPLATE - "_s + m_name + u" - START"_s;
+    if (!code.startsWith(u'\n'))
+        result += u'\n';
+    result += code;
+    result += u"\n// TEMPLATE - "_s + m_name + u" - END\n"_s;
+    return result;
+}
+
+// ---------------------- CodeSnipFragment
+QString CodeSnipFragment::code() const
+{
+    return m_instance ? m_instance->expandCode() : m_code;
+}
+
+// ---------------------- CodeSnipAbstract
+QString CodeSnipAbstract::code() const
+{
+    QString res;
+    for (const CodeSnipFragment &codeFrag : codeList)
+        res.append(codeFrag.code());
+
+    return res;
+}
+
+void CodeSnipAbstract::addCode(const QString &code)
+{
+    codeList.append(CodeSnipFragment(fixSpaces(code)));
+}
+
+void CodeSnipAbstract::purgeEmptyFragments()
+{
+    auto end = std::remove_if(codeList.begin(), codeList.end(),
+                              [](const CodeSnipFragment &f) { return f.isEmpty(); });
+    codeList.erase(end, codeList.end());
+}
+
+QRegularExpression CodeSnipAbstract::placeHolderRegex(int index)
+{
+    return QRegularExpression(u'%' + QString::number(index) + QStringLiteral("\\b"));
+}
+
+void purgeEmptyCodeSnips(QList<CodeSnip> *list)
+{
+    for (auto it = list->begin(); it != list->end(); ) {
+        it->purgeEmptyFragments();
+        if (it->isEmpty())
+            it = list->erase(it);
+        else
+            ++it;
+    }
+}