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
30class _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY _LIBCPP_EXPORTED_FROM_ABI filesystem_error : public system_error {
31public:
32 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, error_code __ec)
33 : system_error(__ec, __what), __storage_(make_shared<_Storage>(args: path(), args: path())) {
34 __create_what(num_paths: 0);
35 }
36
37 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, error_code __ec)
38 : system_error(__ec, __what), __storage_(make_shared<_Storage>(args: __p1, args: path())) {
39 __create_what(num_paths: 1);
40 }
41
42 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, const path& __p2, error_code __ec)
43 : system_error(__ec, __what), __storage_(make_shared<_Storage>(args: __p1, args: __p2)) {
44 __create_what(num_paths: 2);
45 }
46
47 _LIBCPP_HIDE_FROM_ABI const path& path1() const noexcept { return __storage_->__p1_; }
48
49 _LIBCPP_HIDE_FROM_ABI const path& path2() const noexcept { return __storage_->__p2_; }
50
51 _LIBCPP_HIDE_FROM_ABI filesystem_error(const filesystem_error&) = default;
52 ~filesystem_error() override; // key function
53
54 _LIBCPP_HIDE_FROM_ABI_VIRTUAL
55 const char* what() const noexcept override { return __storage_->__what_.c_str(); }
56
57 void __create_what(int __num_paths);
58
59private:
60 struct _LIBCPP_HIDDEN _Storage {
61 _LIBCPP_HIDE_FROM_ABI _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {}
62
63 path __p1_;
64 path __p2_;
65 string __what_;
66 };
67 shared_ptr<_Storage> __storage_;
68};
69
70# if _LIBCPP_HAS_EXCEPTIONS
71template <class... _Args>
72[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void
73__throw_filesystem_error(_Args&&... __args) {
74 throw filesystem_error(std::forward<_Args>(__args)...);
75}
76# else
77template <class... _Args>
78[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void
79__throw_filesystem_error(_Args&&...) {
80 _LIBCPP_VERBOSE_ABORT("filesystem_error was thrown in -fno-exceptions mode");
81}
82# endif
83
84_LIBCPP_END_NAMESPACE_FILESYSTEM
85
86#endif // _LIBCPP_STD_VER >= 17
87
88#endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H
89