diff options
Diffstat (limited to 'libodb/odb/details/meta/class-p.hxx')
-rw-r--r-- | libodb/odb/details/meta/class-p.hxx | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libodb/odb/details/meta/class-p.hxx b/libodb/odb/details/meta/class-p.hxx new file mode 100644 index 0000000..bddb452 --- /dev/null +++ b/libodb/odb/details/meta/class-p.hxx @@ -0,0 +1,34 @@ +// file : odb/details/meta/class-p.hxx +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_DETAILS_META_CLASS_HXX +#define ODB_DETAILS_META_CLASS_HXX + +#include <odb/pre.hxx> + +#include <odb/details/meta/answer.hxx> + +namespace odb +{ + namespace details + { + namespace meta + { + // g++ cannot have these inside class_p. + // + template <typename X> no class_p_test (...); + template <typename X> yes class_p_test (void (X::*) ()); + + template <typename X> + struct class_p + { + static const bool result = + sizeof (class_p_test<X> (0)) == sizeof (yes); + }; + } + } +} + +#include <odb/post.hxx> + +#endif // ODB_DETAILS_META_CLASS_HXX |