diff options
Diffstat (limited to 'include/llvm/ADT/STLExtras.h')
| -rw-r--r-- | include/llvm/ADT/STLExtras.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/llvm/ADT/STLExtras.h b/include/llvm/ADT/STLExtras.h index 15945adbe589a..8c28412bb6078 100644 --- a/include/llvm/ADT/STLExtras.h +++ b/include/llvm/ADT/STLExtras.h @@ -706,6 +706,18 @@ struct is_one_of<T, U, Ts...> { std::is_same<T, U>::value || is_one_of<T, Ts...>::value; }; +/// \brief traits class for checking whether type T is a base class for all +/// the given types in the variadic list. +template <typename T, typename... Ts> struct are_base_of { + static const bool value = true; +}; + +template <typename T, typename U, typename... Ts> +struct are_base_of<T, U, Ts...> { + static const bool value = + std::is_base_of<T, U>::value && are_base_of<T, Ts...>::value; +}; + //===----------------------------------------------------------------------===// // Extra additions for arrays //===----------------------------------------------------------------------===// @@ -1079,7 +1091,7 @@ private: /// /// std::vector<char> Items = {'A', 'B', 'C', 'D'}; /// for (auto X : enumerate(Items)) { -/// printf("Item %d - %c\n", X.Index, X.Value); +/// printf("Item %d - %c\n", X.index(), X.value()); /// } /// /// Output: |