7aa7f4d9e4
Change-Id: I132d3c66f0562e2c37a02eaf4c168d06c2b473eb Reviewed-on: https://gerrit.libreoffice.org/41874 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_O3TL_ENUMRANGE_HXX
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#define INCLUDED_O3TL_ENUMRANGE_HXX
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namespace o3tl {
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///
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/// This is a container convenience class iterating over scoped enumerations.
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///
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/// This assumes that the 'enum class' definition
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/// - starts at zero
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/// - has no holes in its sequence of values
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/// - defines a value called LAST which refers to the greatest constant.
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///
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/// Use like this:
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/// enum class COLOR { RED, GREEN, BLUE, LAST=BLUE };
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/// for( auto e : o3tl::enumrange<Color>() )
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/// .....;
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///
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/// \param T the 'enum class' type.
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template< typename T>
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class enumrange
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{
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public:
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class Iterator
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{
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public:
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Iterator( int value ) :
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m_value( value )
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{
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}
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T operator*( void ) const
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{
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return static_cast<T>(m_value);
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}
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void operator++( void )
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{
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++m_value;
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}
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bool operator!=( Iterator rhs )
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{
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return m_value != rhs.m_value;
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}
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private:
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int m_value;
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};
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};
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template< typename T >
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typename enumrange<T>::Iterator begin( enumrange<T> )
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{
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return typename enumrange<T>::Iterator( (int)0 );
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}
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template< typename T >
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typename enumrange<T>::Iterator end( enumrange<T> )
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{
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return typename enumrange<T>::Iterator( static_cast<int>(T::LAST) + 1 );
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}
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}; // namespace o3tl
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#endif /* INCLUDED_O3TL_ENUMRANGE_HXX */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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