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Diffstat (limited to 'src/boost/libs/hana/test/repeat.cpp')
-rw-r--r-- | src/boost/libs/hana/test/repeat.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/repeat.cpp b/src/boost/libs/hana/test/repeat.cpp new file mode 100644 index 000000000..0d9e42ec8 --- /dev/null +++ b/src/boost/libs/hana/test/repeat.cpp @@ -0,0 +1,45 @@ +// Copyright Louis Dionne 2013-2017 +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#include <boost/hana/assert.hpp> +#include <boost/hana/fwd/concept/integral_constant.hpp> +#include <boost/hana/repeat.hpp> +namespace hana = boost::hana; + + +////////////////////////////////////////////////////////////////////////////// +// Define a simple model of IntegralConstant for use below +template <int i> +struct constant { + static constexpr int value = i; + using value_type = int; +}; + +namespace boost { namespace hana { + template <int i> + struct IntegralConstant<constant<i>> { + static constexpr bool value = true; + }; + + // definition of `to<>` omitted +}} +////////////////////////////////////////////////////////////////////////////// + +void function() { } + +int main() { + int counter = 0; + hana::repeat(constant<3>{}, [&] { ++counter; }); + BOOST_HANA_RUNTIME_CHECK(counter == 3); + + // Try with a normal function. + hana::repeat(constant<3>{}, function); + + // Try with a function pointer. + hana::repeat(constant<3>{}, static_cast<void(*)()>(function)); + + // Make sure we don't read from a non-constexpr variable. + constant<3> three{}; + hana::repeat(three, []{}); +} |