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// Copyright (C) 2010 Edward Diener
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org/libs/config for most recent version.
// MACRO: BOOST_NO_CXX11_VARIADIC_MACROS
// TITLE: C++0x variadic macros unavailable
// DESCRIPTION: The compiler does not support C++0x variadic macros
// This is a simple test
#define TEST_VARIADIC_MACRO_SIMPLE(avalue,...) __VA_ARGS__
/*
This is a more complicated test, which Steve Watanabe graciously
supplied, when I asked if it were possible to strip the parantheses
from a macro argument. I have changed the names somewhat to prevent
any common clashes with other macros in the config testing suite
by prepending to each macro name TEST_VARIADIC_MACRO_.
You may find this test overdone and may want to remove it.
*/
#define TEST_VARIADIC_MACRO_CAT(x, y) TEST_VARIADIC_MACRO_CAT_I(x, y)
#define TEST_VARIADIC_MACRO_CAT_I(x, y) x ## y
#define TEST_VARIADIC_MACRO_APPLY(macro, args) TEST_VARIADIC_MACRO_APPLY_I(macro, args)
#define TEST_VARIADIC_MACRO_APPLY_I(macro, args) macro args
#define TEST_VARIADIC_MACRO_STRIP_PARENS(x) TEST_VARIADIC_MACRO_EVAL((TEST_VARIADIC_MACRO_STRIP_PARENS_I x), x)
#define TEST_VARIADIC_MACRO_STRIP_PARENS_I(...) 1,1
#define TEST_VARIADIC_MACRO_EVAL(test, x) TEST_VARIADIC_MACRO_EVAL_I(test, x)
#define TEST_VARIADIC_MACRO_EVAL_I(test, x) TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS(TEST_VARIADIC_MACRO_TEST_ARITY test, x)
#define TEST_VARIADIC_MACRO_TEST_ARITY(...) TEST_VARIADIC_MACRO_APPLY(TEST_VARIADIC_MACRO_TEST_ARITY_I, (__VA_ARGS__, 2, 1))
#define TEST_VARIADIC_MACRO_TEST_ARITY_I(a,b,c,...) c
#define TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS(cond, x) TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS_I(cond, x)
#define TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS_I(cond, x) TEST_VARIADIC_MACRO_CAT(TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS_, cond)(x)
#define TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS_1(x) x
#define TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS_2(x) TEST_VARIADIC_MACRO_APPLY(TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS_2_I, x)
#define TEST_VARIADIC_MACRO_MAYBE_STRIP_PARENS_2_I(...) __VA_ARGS__
namespace boost_no_cxx11_variadic_macros {
void quiet_warning(int){}
template<TEST_VARIADIC_MACRO_STRIP_PARENS((typename T,int))> struct test_variadic_macro_class {};
int test()
{
int x = TEST_VARIADIC_MACRO_STRIP_PARENS(3);
quiet_warning(x);
return 0;
}
}
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