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diff --git a/include/formula/formulahelper.hxx b/include/formula/formulahelper.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_FORMULA_FORMULAHELPER_HXX
+#define INCLUDED_FORMULA_FORMULAHELPER_HXX
+
+#include <memory>
+#include <vector>
+
+#include <formula/formuladllapi.h>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <unotools/syslocale.hxx>
+
+class CharClass;
+
+namespace formula
+{
+    class IFunctionDescription;
+    class IFunctionManager;
+
+    class FORMULA_DLLPUBLIC FormulaHelper
+    {
+        ::std::unique_ptr<SvtSysLocale> m_pSysLocale;
+        const CharClass*                m_pCharClass;
+        const IFunctionManager*         m_pFunctionManager;
+        const sal_Unicode open;
+        const sal_Unicode close;
+        const sal_Unicode sep;
+        const sal_Unicode arrayOpen;
+        const sal_Unicode arrayClose;
+    public:
+        FormulaHelper(const IFunctionManager* _pFunctionManager);
+
+        const CharClass* GetCharClass() const { return m_pCharClass; }
+
+        sal_Int32           GetCategoryCount() const;
+
+        bool                GetNextFunc( const OUString&     rFormula,
+                                               bool          bBack,
+                                               sal_Int32&    rFStart, // input and output
+                                               sal_Int32*    pFEnd = nullptr,
+                                         const IFunctionDescription** ppFDesc = nullptr,
+                                               ::std::vector< OUString>*      pArgs = nullptr ) const;
+
+        sal_Int32           GetFunctionStart( const OUString& rFormula, sal_Int32 nStart,
+                                                        bool bBack, OUString* pFuncName = nullptr ) const;
+
+        sal_Int32           GetFunctionEnd  ( const OUString& rFormula, sal_Int32 nStart ) const;
+
+        sal_Int32           GetArgStart     ( const OUString& rFormula, sal_Int32 nStart,
+                                                      sal_uInt16 nArg ) const;
+
+        void                GetArgStrings   ( ::std::vector< OUString >& _rArgs,
+                                                      const OUString&   rFormula,
+                                                      sal_Int32         nFuncPos,
+                                                      sal_uInt16        nArgs ) const;
+
+        void                FillArgStrings  ( const OUString& rFormula,
+                                                      sal_Int32         nFuncPos,
+                                                      sal_uInt16        nArgs,
+                                                      ::std::vector< OUString >&      _rArgs ) const;
+    };
+
+} // formula
+
+
+#endif // INCLUDED_FORMULA_FORMULAHELPER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */