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55 lines
1.8 KiB
C++
55 lines
1.8 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 POINTEE_SIZEOF_040211_HPP
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#define POINTEE_SIZEOF_040211_HPP
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#include <boost/mpl/int.hpp>
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namespace luabind {
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namespace detail {
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template<class T> T& deref_type(T(*)(), int);
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template<class T> T& deref_type(T*(*)(), long);
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} // namespace detail
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// returns the indirect sizeof U, as in
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// sizeof(T*) = sizeof(T)
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// sizeof(T&) = sizeof(T)
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// sizeof(T) = sizeof(T)
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template<class T>
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struct pointee_sizeof
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{
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BOOST_STATIC_CONSTANT(int, value = (
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sizeof(detail::deref_type((T(*)())0), 0L)
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));
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typedef boost::mpl::int_<value> type;
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};
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} // namespace luabind
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#endif // POINTEE_SIZEOF_040211_HPP
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