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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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