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___FILESYSTEM_FILESYSTEM_ERROR_H
11#define _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H
12
13#include <__config>
14#include <__filesystem/path.h>
15#include <__memory/shared_ptr.h>
16#include <__system_error/error_code.h>
17#include <__system_error/system_error.h>
18#include <__utility/forward.h>
19#include <__verbose_abort>
20#include <string>
21
22#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
23# pragma GCC system_header
24#endif
25
26#if _LIBCPP_STD_VER >= 17
27
28_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
29_LIBCPP_BEGIN_EXPLICIT_ABI_ANNOTATIONS
30
31class _LIBCPP_EXPORTED_FROM_ABI filesystem_error : public system_error {
32public:
33 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, error_code __ec)
34 : system_error(__ec, __what), __storage_(make_shared<_Storage>(args: path(), args: path())) {
35 __create_what(num_paths: 0);
36 }
37
38 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, error_code __ec)
39 : system_error(__ec, __what), __storage_(make_shared<_Storage>(args: __p1, args: path())) {
40 __create_what(num_paths: 1);
41 }
42
43 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, const path& __p2, error_code __ec)
44 : system_error(__ec, __what), __storage_(make_shared<_Storage>(args: __p1, args: __p2)) {
45 __create_what(num_paths: 2);
46 }
47
48 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const path& path1() const noexcept { return __storage_->__p1_; }
49
50 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const path& path2() const noexcept { return __storage_->__p2_; }
51
52 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI filesystem_error(const filesystem_error&) = default;
53 ~filesystem_error() override; // key function
54
55 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI_VIRTUAL const char* what() const noexcept override {
56 return __storage_->__what_.c_str();
57 }
58
59 void __create_what(int __num_paths);
60
61private:
62 struct _LIBCPP_HIDDEN _Storage {
63 _LIBCPP_HIDE_FROM_ABI _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {}
64
65 path __p1_;
66 path __p2_;
67 string __what_;
68 };
69 shared_ptr<_Storage> __storage_;
70};
71
72# if _LIBCPP_HAS_EXCEPTIONS
73template <class... _Args>
74[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_filesystem_error(_Args&&... __args) {
75 throw filesystem_error(std::forward<_Args>(__args)...);
76}
77# else
78template <class... _Args>
79[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_filesystem_error(_Args&&...) {
80 _LIBCPP_VERBOSE_ABORT("filesystem_error was thrown in -fno-exceptions mode");
81}
82# endif
83
84_LIBCPP_END_EXPLICIT_ABI_ANNOTATIONS
85_LIBCPP_END_NAMESPACE_FILESYSTEM
86
87#endif // _LIBCPP_STD_VER >= 17
88
89#endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H
90