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diff --git a/src/tools/uic/shared/language.h b/src/tools/uic/shared/language.h
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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef LANGUAGE_H
+#define LANGUAGE_H
+
+#include <QtCore/qstring.h>
+#include <QtCore/qstringview.h>
+#include <QtCore/qstring.h>
+
+QT_FORWARD_DECLARE_CLASS(QTextStream)
+
+enum class Language { Cpp, Python };
+
+namespace language {
+
+Language language();
+void setLanguage(Language);
+
+extern QString derefPointer;
+extern QString nullPtr;
+extern QString operatorNew;
+extern QString qtQualifier;
+extern QString qualifier;
+extern QString self;
+extern QString eol;
+
+extern QString cppQualifier;
+extern QString cppTrue;
+extern QString cppFalse;
+
+// Base class for streamable objects with one QStringView parameter
+class StringViewStreamable
+{
+public:
+    StringViewStreamable(QStringView parameter) : m_parameter(parameter) {}
+
+    QStringView parameter() const { return m_parameter; }
+
+private:
+    QStringView m_parameter;
+};
+
+class qtConfig : public StringViewStreamable
+{
+public:
+    qtConfig(QStringView name) : StringViewStreamable(name) {}
+};
+
+QTextStream &operator<<(QTextStream &str, const qtConfig &c);
+
+class openQtConfig : public StringViewStreamable
+{
+public:
+    openQtConfig(QStringView name) : StringViewStreamable(name) {}
+};
+
+QTextStream &operator<<(QTextStream &str, const openQtConfig &c);
+
+class closeQtConfig : public StringViewStreamable
+{
+public:
+    closeQtConfig(QStringView name) : StringViewStreamable(name) {}
+};
+
+QTextStream &operator<<(QTextStream &, const closeQtConfig &c);
+
+QString fixClassName(QString className);
+
+const char *toolbarArea(int v);
+const char *sizePolicy(int v);
+const char *dockWidgetArea(int v);
+const char *paletteColorRole(int v);
+
+enum class Encoding { Utf8, Unicode };
+
+void _formatString(QTextStream &str, const QString &value, const QString &indent,
+                   bool qString);
+
+template <bool AsQString>
+class _string
+{
+public:
+    explicit _string(const QString &value, const QString &indent = QString())
+        : m_value(value), m_indent(indent) {}
+
+    void format(QTextStream &str) const
+    { _formatString(str, m_value, m_indent, AsQString); }
+
+private:
+    const QString &m_value;
+    const QString &m_indent;
+};
+
+template <bool AsQString>
+inline QTextStream &operator<<(QTextStream &str, const language::_string<AsQString> &s)
+{
+    s.format(str);
+    return str;
+}
+
+using charliteral = _string<false>;
+using qstring = _string<true>;
+
+class repeat {
+public:
+    explicit repeat(int count, char c) : m_count(count), m_char(c) {}
+
+    friend QTextStream &operator<<(QTextStream &str, const repeat &r);
+
+private:
+    const int m_count;
+    const char m_char;
+};
+
+class startFunctionDefinition1 {
+public:
+    explicit startFunctionDefinition1(const char *name, const QString &parameterType,
+                                      const QString &parameterName,
+                                      const QString &indent,
+                                      const char *returnType = nullptr);
+
+    friend QTextStream &operator<<(QTextStream &str, const startFunctionDefinition1 &f);
+private:
+    const char *m_name;
+    const QString &m_parameterType;
+    const QString &m_parameterName;
+    const QString &m_indent;
+    const char *m_return;
+};
+
+class endFunctionDefinition {
+public:
+    explicit endFunctionDefinition(const char *name);
+
+    friend QTextStream &operator<<(QTextStream &str, const endFunctionDefinition &f);
+private:
+    const char *m_name;
+};
+
+void _formatStackVariable(QTextStream &str, const char *className, QStringView varName, bool withInitParameters);
+
+template <bool withInitParameters>
+class _stackVariable {
+public:
+    explicit _stackVariable(const char *className, QStringView varName) :
+        m_className(className), m_varName(varName) {}
+
+    void format(QTextStream &str) const
+    { _formatStackVariable(str, m_className, m_varName, withInitParameters); }
+
+private:
+    const char *m_className;
+    QStringView m_varName;
+    QStringView m_parameters;
+};
+
+template <bool withInitParameters>
+inline QTextStream &operator<<(QTextStream &str, const _stackVariable<withInitParameters> &s)
+{
+    s.format(str);
+    return str;
+}
+
+using stackVariable = _stackVariable<false>;
+using stackVariableWithInitParameters = _stackVariable<true>;
+
+struct SignalSlot
+{
+    QString name;
+    QString signature;
+    QString className;
+};
+
+void formatConnection(QTextStream &str, const SignalSlot &sender, const SignalSlot &receiver);
+
+QString boolValue(bool v);
+
+QString enumValue(const QString &value);
+
+} // namespace language
+
+#endif // LANGUAGE_H