| // -*-c++-*- |
| // vim: set ft=cpp: |
| |
| /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| file Copyright.txt or https://cmake.org/licensing for details. */ |
| #pragma once |
| |
| #include <typeinfo> |
| |
| #include <cm/type_traits> |
| |
| namespace cm { |
| |
| template < |
| typename T, typename O, |
| cm::enable_if_t<std::is_pointer<decltype(std::declval<O>().get())>::value, |
| int> = 0> |
| T& static_reference_cast(O& item) |
| { |
| return *(static_cast<T*>(item.get())); |
| } |
| |
| template < |
| typename T, typename O, |
| cm::enable_if_t<std::is_pointer<decltype(std::declval<O>().get())>::value, |
| int> = 0> |
| T& dynamic_reference_cast(O& item) |
| { |
| auto p = dynamic_cast<T*>(item.get()); |
| |
| if (p == nullptr) { |
| throw std::bad_cast(); |
| } |
| |
| return *p; |
| } |
| |
| } // namespace cm |
