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88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
#include <boost/yap/expression.hpp>
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namespace yap = boost::yap;
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struct alternate_expr_1
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{
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static const yap::expr_kind kind = yap::expr_kind::plus;
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boost::hana::tuple<> elements;
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};
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struct alternate_expr_2
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{
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static const yap::expr_kind kind = yap::expr_kind::plus;
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boost::hana::tuple<int, double> elements;
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};
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struct non_expr_1
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{
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};
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struct non_expr_2
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{
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boost::hana::tuple<int, double> elements;
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};
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struct non_expr_3
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{
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static const int kind = 0;
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boost::hana::tuple<int, double> elements;
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};
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struct non_expr_4
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{
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int kind;
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boost::hana::tuple<int, double> elements;
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};
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struct non_expr_5
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{
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static const yap::expr_kind kind = yap::expr_kind::plus;
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};
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struct non_expr_6
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{
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static const yap::expr_kind kind = yap::expr_kind::plus;
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int elements;
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};
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void compile_is_expr ()
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{
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static_assert(yap::detail::is_hana_tuple<boost::hana::tuple<>>::value);
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static_assert(yap::detail::is_hana_tuple<boost::hana::tuple<int, double>>::value);
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static_assert(! yap::detail::is_hana_tuple<int>::value);
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static_assert(
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yap::detail::is_hana_tuple<
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yap::detail::remove_cv_ref_t<
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decltype(std::declval<yap::terminal<double>>().elements)
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>
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>::value
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);
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static_assert(yap::detail::is_expr<yap::terminal<double>>::value);
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static_assert(yap::detail::is_expr<yap::terminal<double> const>::value);
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static_assert(yap::detail::is_expr<yap::terminal<double> const &>::value);
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static_assert(yap::detail::is_expr<yap::terminal<double> &>::value);
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static_assert(yap::detail::is_expr<yap::terminal<double> &&>::value);
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static_assert(yap::detail::is_expr<yap::placeholder<1>>::value);
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static_assert(yap::detail::is_expr<yap::expression<yap::expr_kind::unary_plus, boost::hana::tuple<yap::terminal<double>>>>::value);
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static_assert(yap::detail::is_expr<yap::expression<yap::expr_kind::plus, boost::hana::tuple<yap::terminal<double>, yap::terminal<double>>>>::value);
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static_assert(yap::detail::is_expr<alternate_expr_1>::value);
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static_assert(yap::detail::is_expr<alternate_expr_2>::value);
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static_assert(! yap::detail::is_expr<int>::value);
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static_assert(! yap::detail::is_expr<non_expr_1>::value);
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static_assert(! yap::detail::is_expr<non_expr_2>::value);
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static_assert(! yap::detail::is_expr<non_expr_3>::value);
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static_assert(! yap::detail::is_expr<non_expr_4>::value);
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static_assert(! yap::detail::is_expr<non_expr_5>::value);
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static_assert(! yap::detail::is_expr<non_expr_6>::value);
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}
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