diff options
| author | Karen Arutyunov <karen@codesynthesis.com> | 2020-12-16 20:29:05 +0300 |
|---|---|---|
| committer | Karen Arutyunov <karen@codesynthesis.com> | 2021-02-24 16:40:04 +0300 |
| commit | 8e761289a2446367267c6c0d9a26e734f0f78306 (patch) | |
| tree | fb495d8c18801f271d124ee48731f10df396ca89 /libcutl/meta/polymorphic-p.hxx | |
| parent | 4c8104756b92b9fa16b3a725e8a6aa620dfd606e (diff) | |
Get rid of legacy build systems and rename cutl/ to libcutl/
Diffstat (limited to 'libcutl/meta/polymorphic-p.hxx')
| -rw-r--r-- | libcutl/meta/polymorphic-p.hxx | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/libcutl/meta/polymorphic-p.hxx b/libcutl/meta/polymorphic-p.hxx new file mode 100644 index 0000000..13fb531 --- /dev/null +++ b/libcutl/meta/polymorphic-p.hxx @@ -0,0 +1,49 @@ +// file : libcutl/meta/polymorphic-p.hxx +// license : MIT; see accompanying LICENSE file + +#ifndef LIBCUTL_META_POLYMORPHIC_HXX +#define LIBCUTL_META_POLYMORPHIC_HXX + +#include <libcutl/meta/class-p.hxx> +#include <libcutl/meta/remove-cv.hxx> + +namespace cutl +{ + namespace meta + { + template <typename CVX> + struct polymorphic_p + { + typedef typename remove_cv<CVX>::r X; + + template <typename Y, bool C> + struct impl + { + static const bool r = false; + }; + + template <typename Y> + struct impl<Y, true> + { + struct t1: Y + { + t1 (); + }; + + struct t2: Y + { + t2 (); + + virtual + ~t2 () noexcept; + }; + + static const bool r = sizeof (t1) == sizeof (t2); + }; + + static const bool r = impl<X, class_p<X>::r>::r; + }; + } +} + +#endif // LIBCUTL_META_POLYMORPHIC_HXX |