mirror of https://github.com/KLayout/klayout.git
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
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/*
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KLayout Layout Viewer
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Copyright (C) 2006-2022 Matthias Koefferlein
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef HDR_tlIteratorUtils
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#define HDR_tlIteratorUtils
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namespace tl
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{
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/**
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* @brief Checks an iterator against the default-constructed value
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*
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* This function takes care of using the right way of comparing iterators
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* suitable for MSVC with iterator debugging on.
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*/
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template <class Iter>
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static inline bool is_null_iterator (const Iter &iter)
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{
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#if defined(_MSC_VER) && defined(_ITERATOR_DEBUG_LEVEL) && _ITERATOR_DEBUG_LEVEL >= 2
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return iter._Unwrapped () == Iter ()._Unwrapped ();
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#else
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return iter == Iter ();
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#endif
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}
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/**
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* @brief Checks an iterator against another one without iterator checking
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*
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* This function takes care of using the right way of comparing iterators
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* suitable for MSVC with iterator debugging on.
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*/
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template <class Iter>
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static inline bool is_equal_iterator_unchecked (const Iter &a, const Iter &b)
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{
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#if defined(_MSC_VER) && defined(_ITERATOR_DEBUG_LEVEL) && _ITERATOR_DEBUG_LEVEL >= 2
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return a._Unwrapped () == b._Unwrapped ();
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#else
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return a == b;
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#endif
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}
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}
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#endif
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