| // Copyright 2017 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. |
| |
| #include "absl/types/bad_variant_access.h" |
| |
| #ifndef ABSL_USES_STD_VARIANT |
| |
| #include <cstdlib> |
| #include <stdexcept> |
| |
| #include "absl/base/config.h" |
| #include "absl/base/internal/raw_logging.h" |
| |
| namespace absl { |
| ABSL_NAMESPACE_BEGIN |
| |
| ////////////////////////// |
| // [variant.bad.access] // |
| ////////////////////////// |
| |
| bad_variant_access::~bad_variant_access() = default; |
| |
| const char* bad_variant_access::what() const noexcept { |
| return "Bad variant access"; |
| } |
| |
| namespace variant_internal { |
| |
| void ThrowBadVariantAccess() { |
| #ifdef ABSL_HAVE_EXCEPTIONS |
| throw bad_variant_access(); |
| #else |
| ABSL_RAW_LOG(FATAL, "Bad variant access"); |
| abort(); // TODO(calabrese) Remove once RAW_LOG FATAL is noreturn. |
| #endif |
| } |
| |
| void Rethrow() { |
| #ifdef ABSL_HAVE_EXCEPTIONS |
| throw; |
| #else |
| ABSL_RAW_LOG(FATAL, |
| "Internal error in absl::variant implementation. Attempted to " |
| "rethrow an exception when building with exceptions disabled."); |
| abort(); // TODO(calabrese) Remove once RAW_LOG FATAL is noreturn. |
| #endif |
| } |
| |
| } // namespace variant_internal |
| ABSL_NAMESPACE_END |
| } // namespace absl |
| |
| #else |
| |
| // https://github.com/abseil/abseil-cpp/issues/1465 |
| // CMake builds on Apple platforms error when libraries are empty. |
| // Our CMake configuration can avoid this error on header-only libraries, |
| // but since this library is conditionally empty, including a single |
| // variable is an easy workaround. |
| #ifdef __APPLE__ |
| namespace absl { |
| ABSL_NAMESPACE_BEGIN |
| namespace types_internal { |
| extern const char kAvoidEmptyBadVariantAccessLibraryWarning; |
| const char kAvoidEmptyBadVariantAccessLibraryWarning = 0; |
| } // namespace types_internal |
| ABSL_NAMESPACE_END |
| } // namespace absl |
| #endif // __APPLE__ |
| |
| #endif // ABSL_USES_STD_VARIANT |