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71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
// Copyright (c) 2004 Daniel Wallin and Arvid Norberg
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
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// OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef IS_INDIRECT_CONST_040211_HPP
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#define IS_INDIRECT_CONST_040211_HPP
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#include <luabind/detail/yes_no.hpp>
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#include <boost/type_traits/is_const.hpp>
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#include <boost/mpl/bool.hpp>
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namespace luabind {
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namespace detail {
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template<class T>
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typename boost::is_const<T>::type
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is_indirect_const_check(T(*)(), int);
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template<class T>
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typename boost::is_const<T>::type
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is_indirect_const_check(T*(*)(), long);
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template<class T>
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typename boost::is_const<T>::type
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is_indirect_const_check(T&(*)(), long);
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yes_t to_yes_no(boost::mpl::true_);
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no_t to_yes_no(boost::mpl::false_);
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} // namespace detail
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// returns true for:
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// T = U* is_const<U>
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// T = U& is_const<U>
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// T = U is_const<U>
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template<class T>
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struct is_indirect_const
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{
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BOOST_STATIC_CONSTANT(int, value = (
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sizeof(
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detail::to_yes_no(
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detail::is_indirect_const_check((T(*)())0, 0L)
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))
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== sizeof(detail::yes_t)
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));
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};
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} // namespace luabind
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#endif // IS_INDIRECT_CONST_040211_HPP
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