1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_EXCEPTION
11#define _LIBCPP_EXCEPTION
12
13/*
14    exception synopsis
15
16namespace std
17{
18
19class exception
20{
21public:
22    exception() noexcept;
23    exception(const exception&) noexcept;
24    exception& operator=(const exception&) noexcept;
25    virtual ~exception() noexcept;
26    virtual const char* what() const noexcept;
27};
28
29class bad_exception
30    : public exception
31{
32public:
33    bad_exception() noexcept;
34    bad_exception(const bad_exception&) noexcept;
35    bad_exception& operator=(const bad_exception&) noexcept;
36    virtual ~bad_exception() noexcept;
37    virtual const char* what() const noexcept;
38};
39
40typedef void (*unexpected_handler)();
41unexpected_handler set_unexpected(unexpected_handler  f ) noexcept;
42unexpected_handler get_unexpected() noexcept;
43[[noreturn]] void unexpected();
44
45typedef void (*terminate_handler)();
46terminate_handler set_terminate(terminate_handler  f ) noexcept;
47terminate_handler get_terminate() noexcept;
48[[noreturn]] void terminate() noexcept;
49
50bool uncaught_exception()  noexcept;
51int  uncaught_exceptions() noexcept;  // C++17
52
53typedef unspecified exception_ptr;
54
55exception_ptr current_exception() noexcept;
56void rethrow_exception [[noreturn]] (exception_ptr p);
57template<class E> exception_ptr make_exception_ptr(E e) noexcept;
58
59class nested_exception
60{
61public:
62    nested_exception() noexcept;
63    nested_exception(const nested_exception&) noexcept = default;
64    nested_exception& operator=(const nested_exception&) noexcept = default;
65    virtual ~nested_exception() = default;
66
67    // access functions
68    [[noreturn]] void rethrow_nested() const;
69    exception_ptr nested_ptr() const noexcept;
70};
71
72template <class T> [[noreturn]] void throw_with_nested(T&& t);
73template <class E> void rethrow_if_nested(const E& e);
74
75}  // std
76
77*/
78
79#include <__assert> // all public C++ headers provide the assertion handler
80#include <__config>
81#include <__exception/exception.h>
82#include <__exception/exception_ptr.h>
83#include <__exception/nested_exception.h>
84#include <__exception/operations.h>
85#include <__exception/terminate.h>
86#include <version>
87
88#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
89#  pragma GCC system_header
90#endif
91
92#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
93#  include <cstdlib>
94#  include <type_traits>
95#endif
96
97#endif // _LIBCPP_EXCEPTION
98