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 <iosfwd>
18 #include <new>
19 #include <system_error>
20 #include <type_traits>
21
22 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
23 # pragma GCC system_header
24 #endif
25
26 #ifndef _LIBCPP_CXX03_LANG
27
28 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
29
30 class _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error {
31 public:
32 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,error_code __ec)33 filesystem_error(const string& __what, error_code __ec)
34 : system_error(__ec, __what),
35 __storage_(make_shared<_Storage>(path(), path())) {
36 __create_what(0);
37 }
38
39 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,const path & __p1,error_code __ec)40 filesystem_error(const string& __what, const path& __p1, error_code __ec)
41 : system_error(__ec, __what),
42 __storage_(make_shared<_Storage>(__p1, path())) {
43 __create_what(1);
44 }
45
46 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,const path & __p1,const path & __p2,error_code __ec)47 filesystem_error(const string& __what, const path& __p1, const path& __p2,
48 error_code __ec)
49 : system_error(__ec, __what),
50 __storage_(make_shared<_Storage>(__p1, __p2)) {
51 __create_what(2);
52 }
53
54 _LIBCPP_INLINE_VISIBILITY
path1()55 const path& path1() const noexcept { return __storage_->__p1_; }
56
57 _LIBCPP_INLINE_VISIBILITY
path2()58 const path& path2() const noexcept { return __storage_->__p2_; }
59
60 filesystem_error(const filesystem_error&) = default;
61 ~filesystem_error() override; // key function
62
63 _LIBCPP_INLINE_VISIBILITY
what()64 const char* what() const noexcept override {
65 return __storage_->__what_.c_str();
66 }
67
68 void __create_what(int __num_paths);
69
70 private:
71 struct _LIBCPP_HIDDEN _Storage {
72 _LIBCPP_INLINE_VISIBILITY
_Storage_Storage73 _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {}
74
75 path __p1_;
76 path __p2_;
77 string __what_;
78 };
79 shared_ptr<_Storage> __storage_;
80 };
81
82 // TODO(ldionne): We need to pop the pragma and push it again after
83 // filesystem_error to work around PR41078.
84 _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH
85
86 template <class... _Args>
87 _LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
88 #ifndef _LIBCPP_NO_EXCEPTIONS
__throw_filesystem_error(_Args &&...__args)89 void __throw_filesystem_error(_Args&&... __args) {
90 throw filesystem_error(_VSTD::forward<_Args>(__args)...);
91 }
92 #else
93 void __throw_filesystem_error(_Args&&...) {
94 _VSTD::abort();
95 }
96 #endif
97 _LIBCPP_AVAILABILITY_FILESYSTEM_POP
98
99 _LIBCPP_END_NAMESPACE_FILESYSTEM
100
101 #endif // _LIBCPP_CXX03_LANG
102
103 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H
104