1/*
2 * Copyright 2017-present Facebook, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#pragma once
18
19#include <exception>
20#include <typeinfo>
21
22#include <folly/CPortability.h>
23
24namespace folly {
25
26/**
27 * Exception type that is thrown on invalid access of an empty `Poly` object.
28 */
29struct FOLLY_EXPORT BadPolyAccess : std::exception {
30 BadPolyAccess() = default;
31 char const* what() const noexcept override {
32 return "BadPolyAccess";
33 }
34};
35
36/**
37 * Exception type that is thrown when attempting to extract from a `Poly` a
38 * value of the wrong type.
39 */
40struct FOLLY_EXPORT BadPolyCast : std::bad_cast {
41 BadPolyCast() = default;
42 char const* what() const noexcept override {
43 return "BadPolyCast";
44 }
45};
46
47} // namespace folly
48