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An Image Processing Platform
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is.hh
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// Copyright (C) 2007, 2008, 2009, 2012 EPITA Research and Development
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// Laboratory (LRDE)
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//
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// This file is part of Olena.
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//
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// Olena is free software: you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation, version 2 of the License.
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//
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// Olena 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 GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Olena. If not, see <http://www.gnu.org/licenses/>.
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//
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// As a special exception, you may use this file as part of a free
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// software project without restriction. Specifically, if other files
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// instantiate templates or use macros or inline functions from this
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// file, or you compile this file and link it with other files to produce
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// an executable, this file does not by itself cause the resulting
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// executable to be covered by the GNU General Public License. This
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// exception does not however invalidate any other reasons why the
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// executable file might be covered by the GNU General Public License.
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#ifndef MLN_METAL_IS_HH
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# define MLN_METAL_IS_HH
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# include <mln/metal/is_a.hh>
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# define mlc_is(T, U) mln::metal::is< T, U >
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namespace
mln
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{
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namespace
metal
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{
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namespace
internal
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{
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template
<
typename
T,
typename
U>
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struct
helper_is_
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{
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static
yes_
selector(U*
const
);
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static
no_ selector(...);
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};
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}
// end of namespace mln::metal::internal
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template
<
typename
T,
typename
U>
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struct
is :
bool_
<( sizeof(internal::helper_is_<T, U>::selector(internal::make_<T>::ptr()))
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==
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sizeof(internal::yes_) )>
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{
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};
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template
<
typename
T,
typename
U>
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struct
is< const
T
, const U > : is<T, U>
::eval
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{};
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template
<
typename
T,
typename
U>
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struct
is<
T
*, U* > : is<T, U>::eval
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{};
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template
<
typename
T,
typename
U>
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struct
is<
T
&, U& > : is<T, U>::eval
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{};
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template
<
typename
T,
typename
U>
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struct
is<
T
**, U** > :
false_
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{};
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}
// end of namespace mln::metal
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}
// end of namespace mln
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#endif // ! MLN_METAL_IS_HH
mln
metal
is.hh
Copyright (C) 2012 EPITA Research and Development Laboratory (LRDE)