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add 'is_placeholder' test

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[SVN r16450]
This commit is contained in:
Aleksey Gurtovoy
2002-11-28 06:58:37 +00:00
parent c8cd48952f
commit b01dc9f6f5
1 changed files with 48 additions and 0 deletions
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48
test/is_placeholder.cpp Normal file
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//-----------------------------------------------------------------------------
// boost mpl/test/is_placeholder.cpp source file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2000-02
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#include "boost/mpl/is_placeholder.hpp"
#include "boost/mpl/placeholder.hpp"
#include "boost/preprocessor/repeat.hpp"
#include "boost/preprocessor/inc.hpp"
#include "boost/preprocessor/cat.hpp"
#include "boost/static_assert.hpp"
using namespace boost::mpl;
struct UDT;
#define AUX_IS_PLACEHOLDER_TEST(unused1, n, unused2) \
{ BOOST_STATIC_ASSERT(is_placeholder< \
BOOST_PP_CAT(_,BOOST_PP_INC(n)) \
>::value); } \
/**/
int main()
{
BOOST_STATIC_ASSERT(!is_placeholder<int>::value);
BOOST_STATIC_ASSERT(!is_placeholder<UDT>::value);
BOOST_STATIC_ASSERT(is_placeholder<_>::value);
BOOST_PP_REPEAT(
BOOST_MPL_METAFUNCTION_MAX_ARITY
, AUX_IS_PLACEHOLDER_TEST
, unused
)
return 0;
}