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diff --git a/include/basic/codecompletecache.hxx b/include/basic/codecompletecache.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_BASIC_CODECOMPLETECACHE_HXX
+#define INCLUDED_BASIC_CODECOMPLETECACHE_HXX
+
+#include <config_options.h>
+#include <basic/basicdllapi.h>
+#include <rtl/ustring.hxx>
+#include <unordered_map>
+
+typedef std::unordered_map< OUString, OUString > CodeCompleteVarTypes;
+/* variable name, type */
+typedef std::unordered_map< OUString, CodeCompleteVarTypes > CodeCompleteVarScopes;
+/* procedure, CodeCompleteVarTypes */
+
+class BASIC_DLLPUBLIC CodeCompleteOptions
+{
+/*
+ * class to store basic code completion
+ * options
+ * */
+private:
+    bool bIsCodeCompleteOn;
+    bool bIsProcedureAutoCompleteOn;
+    bool bIsAutoCloseQuotesOn;
+    bool bIsAutoCloseParenthesisOn;
+    bool bIsAutoCorrectOn;
+    bool bExtendedTypeDeclarationOn;
+
+public:
+    CodeCompleteOptions();
+
+    static bool IsCodeCompleteOn();
+    static void SetCodeCompleteOn( bool b );
+
+    static bool IsExtendedTypeDeclaration();
+    static void SetExtendedTypeDeclaration( bool b );
+
+    static bool IsProcedureAutoCompleteOn();
+    static void SetProcedureAutoCompleteOn( bool b );
+
+    static bool IsAutoCloseQuotesOn();
+    static void SetAutoCloseQuotesOn( bool b );
+
+    static bool IsAutoCloseParenthesisOn();
+    static void SetAutoCloseParenthesisOn( bool b );
+
+    static bool IsAutoCorrectOn();
+    static void SetAutoCorrectOn( bool b );
+};
+
+class UNLESS_MERGELIBS(BASIC_DLLPUBLIC) CodeCompleteDataCache final
+{
+/*
+ * cache to store data for
+ * code completion
+ * */
+private:
+    CodeCompleteVarScopes aVarScopes;
+    CodeCompleteVarTypes aGlobalVars;
+
+public:
+    CodeCompleteDataCache(){}
+
+    friend BASIC_DLLPUBLIC std::ostream& operator<< (std::ostream& aStream, const CodeCompleteDataCache& aCache);
+
+    void InsertGlobalVar( const OUString& sVarName, const OUString& sVarType );
+    void InsertLocalVar( const OUString& sProcName, const OUString& sVarName, const OUString& sVarType );
+    OUString GetVarType( std::u16string_view sVarName ) const;
+    OUString GetCorrectCaseVarName( std::u16string_view sVarName, std::u16string_view sActProcName ) const;
+    void Clear();
+};
+
+#endif // INCLUDED_BASIC_CODECOMPLETECACHE_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */