diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/types/bad_any_cast.h')
-rw-r--r-- | third_party/abseil_cpp/absl/types/bad_any_cast.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/third_party/abseil_cpp/absl/types/bad_any_cast.h b/third_party/abseil_cpp/absl/types/bad_any_cast.h new file mode 100644 index 000000000000..114cef80cdde --- /dev/null +++ b/third_party/abseil_cpp/absl/types/bad_any_cast.h @@ -0,0 +1,75 @@ +// Copyright 2018 The Abseil Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// +// ----------------------------------------------------------------------------- +// bad_any_cast.h +// ----------------------------------------------------------------------------- +// +// This header file defines the `absl::bad_any_cast` type. + +#ifndef ABSL_TYPES_BAD_ANY_CAST_H_ +#define ABSL_TYPES_BAD_ANY_CAST_H_ + +#include <typeinfo> + +#include "absl/base/config.h" + +#ifdef ABSL_USES_STD_ANY + +#include <any> + +namespace absl { +ABSL_NAMESPACE_BEGIN +using std::bad_any_cast; +ABSL_NAMESPACE_END +} // namespace absl + +#else // ABSL_USES_STD_ANY + +namespace absl { +ABSL_NAMESPACE_BEGIN + +// ----------------------------------------------------------------------------- +// bad_any_cast +// ----------------------------------------------------------------------------- +// +// An `absl::bad_any_cast` type is an exception type that is thrown when +// failing to successfully cast the return value of an `absl::any` object. +// +// Example: +// +// auto a = absl::any(65); +// absl::any_cast<int>(a); // 65 +// try { +// absl::any_cast<char>(a); +// } catch(const absl::bad_any_cast& e) { +// std::cout << "Bad any cast: " << e.what() << '\n'; +// } +class bad_any_cast : public std::bad_cast { + public: + ~bad_any_cast() override; + const char* what() const noexcept override; +}; + +namespace any_internal { + +[[noreturn]] void ThrowBadAnyCast(); + +} // namespace any_internal +ABSL_NAMESPACE_END +} // namespace absl + +#endif // ABSL_USES_STD_ANY + +#endif // ABSL_TYPES_BAD_ANY_CAST_H_ |