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douglas |
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// Foreach for STL |
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// |
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// Douglas Thrift |
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// |
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// $Id$ |
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/* Menes - C++ High-Level Utility Library |
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* Copyright (C) 2004 Jay Freeman (saurik) |
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*/ |
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/* |
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* Redistribution and use in source and binary |
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* forms, with or without modification, are permitted |
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* provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the |
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* above copyright notice, this list of conditions |
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* and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the |
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* above copyright notice, this list of conditions |
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* and the following disclaimer in the documentation |
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* and/or other materials provided with the |
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* distribution. |
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* 3. The name of the author may not be used to endorse |
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* or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef _foreach_hpp_ |
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#define _foreach_hpp_ |
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#define _forever for (;;) |
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#define _forall(type, item, begin, end) \ |
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if (size_t _index = 0); \ |
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else for (type item(begin), _end(end); item != _end; ++item, ++_index) |
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#define _rforall(type, item, begin, end) \ |
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for (type item(end), _begin(begin); item != _begin && (--item, true); ) |
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#define _repeat(count) \ |
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for (unsigned _index(0), _end(count); _index != _end; ++_index) |
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douglas |
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template <typename List_, bool noop = true> |
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struct StrictIterator; |
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template <typename List_> |
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struct StrictIterator<List_, true> { |
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typedef typename List_::iterator Result; |
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}; |
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template <typename List_> |
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struct StrictIterator<const List_, true> { |
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typedef typename List_::const_iterator Result; |
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}; |
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template <typename List_, bool noop = true> |
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struct ListTraits; |
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template <typename List_> |
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struct ListTraits<List_, true> |
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{ |
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typedef typename StrictIterator<List_>::Result Iterator; |
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static inline Iterator Begin(List_ &arg) { |
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return arg.begin(); |
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} |
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static inline Iterator End(List_ &arg) { |
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return arg.end(); |
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} |
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}; |
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#define _foreach_(type, item, set, forall, _typename) \ |
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douglas |
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for (bool _stop(true); _stop; ) \ |
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douglas |
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for (type &_set = set; _stop; _stop = false) \ |
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forall (_typename ListTraits< type >::Iterator, item, ListTraits< type >::Begin(_set), ListTraits< type >::End(_set)) |
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douglas |
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douglas |
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#define _foreach(type, item, set) \ |
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_foreach_(type, item, set, _forall, ) |
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douglas |
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#define _rforeach(type, item, set) \ |
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douglas |
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_foreach_(type, item, set, _rforall, ) |
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douglas |
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douglas |
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#define _tforeach(type, item, set) \ |
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_foreach_(type, item, set, _forall, typename) |
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#define _rtforeach(type, item, set) \ |
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_foreach_(type, item, set, _rforall, typename) |
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douglas |
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#endif//_foreach_hpp_ |
