carbon-copy of the `optional`-relevant src from abseil (#1083)

1 files changed, 37 insertions, 0 deletions

diff --git a/Firestore/third_party/abseil-cpp/absl/types/bad_optional_access.h b/Firestore/third_party/abseil-cpp/absl/types/bad_optional_access.h
new file mode 100644
index 0000000..c4c7444
--- /dev/null
+++ b/Firestore/third_party/abseil-cpp/absl/types/bad_optional_access.h
@@ -0,0 +1,37 @@
+// 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
+//
+//      http://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.
+
+#ifndef ABSL_TYPES_BAD_OPTIONAL_ACCESS_H_
+#define ABSL_TYPES_BAD_OPTIONAL_ACCESS_H_
+
+#include <stdexcept>
+
+namespace absl {
+
+class bad_optional_access : public std::exception {
+ public:
+  bad_optional_access() = default;
+  ~bad_optional_access() override;
+  const char* what() const noexcept override;
+};
+
+namespace optional_internal {
+
+// throw delegator
+[[noreturn]] void throw_bad_optional_access();
+
+}  // namespace optional_internal
+}  // namespace absl
+
+#endif  // ABSL_TYPES_BAD_OPTIONAL_ACCESS_H_