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 <__availability>
14 #include <__config>
15 #include <__filesystem/path.h>
16 #include <__memory/shared_ptr.h>
17 #include <__utility/forward.h>
18 #include <iosfwd>
19 #include <new>
20 #include <system_error>
21 #include <type_traits>
22
23 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
24 # pragma GCC system_header
25 #endif
26
27 #ifndef _LIBCPP_CXX03_LANG
28
29 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
30
31 class _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error {
32 public:
33 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,error_code __ec)34 filesystem_error(const string& __what, error_code __ec)
35 : system_error(__ec, __what),
36 __storage_(make_shared<_Storage>(path(), path())) {
37 __create_what(0);
38 }
39
40 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,const path & __p1,error_code __ec)41 filesystem_error(const string& __what, const path& __p1, error_code __ec)
42 : system_error(__ec, __what),
43 __storage_(make_shared<_Storage>(__p1, path())) {
44 __create_what(1);
45 }
46
47 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,const path & __p1,const path & __p2,error_code __ec)48 filesystem_error(const string& __what, const path& __p1, const path& __p2,
49 error_code __ec)
50 : system_error(__ec, __what),
51 __storage_(make_shared<_Storage>(__p1, __p2)) {
52 __create_what(2);
53 }
54
55 _LIBCPP_INLINE_VISIBILITY
path1()56 const path& path1() const noexcept { return __storage_->__p1_; }
57
58 _LIBCPP_INLINE_VISIBILITY
path2()59 const path& path2() const noexcept { return __storage_->__p2_; }
60
61 filesystem_error(const filesystem_error&) = default;
62 ~filesystem_error() override; // key function
63
64 _LIBCPP_HIDE_FROM_ABI_VIRTUAL
what()65 const char* what() const noexcept override {
66 return __storage_->__what_.c_str();
67 }
68
69 void __create_what(int __num_paths);
70
71 private:
72 struct _LIBCPP_HIDDEN _Storage {
73 _LIBCPP_INLINE_VISIBILITY
_Storage_Storage74 _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {}
75
76 path __p1_;
77 path __p2_;
78 string __what_;
79 };
80 shared_ptr<_Storage> __storage_;
81 };
82
83 // TODO(ldionne): We need to pop the pragma and push it again after
84 // filesystem_error to work around PR41078.
85 _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH
86
87 template <class... _Args>
88 _LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
89 #ifndef _LIBCPP_NO_EXCEPTIONS
__throw_filesystem_error(_Args &&...__args)90 void __throw_filesystem_error(_Args&&... __args) {
91 throw filesystem_error(_VSTD::forward<_Args>(__args)...);
92 }
93 #else
94 void __throw_filesystem_error(_Args&&...) {
95 _VSTD::abort();
96 }
97 #endif
98 _LIBCPP_AVAILABILITY_FILESYSTEM_POP
99
100 _LIBCPP_END_NAMESPACE_FILESYSTEM
101
102 #endif // _LIBCPP_CXX03_LANG
103
104 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H
105