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 <__system_error/error_code.h>
18 #include <__system_error/system_error.h>
19 #include <__utility/forward.h>
20 #include <__verbose_abort>
21 #include <iosfwd>
22 #include <new>
23 #include <string>
24
25 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
26 # pragma GCC system_header
27 #endif
28
29 #ifndef _LIBCPP_CXX03_LANG
30
31 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
32
33 class _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error {
34 public:
35 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,error_code __ec)36 filesystem_error(const string& __what, error_code __ec)
37 : system_error(__ec, __what),
38 __storage_(make_shared<_Storage>(path(), path())) {
39 __create_what(0);
40 }
41
42 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,const path & __p1,error_code __ec)43 filesystem_error(const string& __what, const path& __p1, error_code __ec)
44 : system_error(__ec, __what),
45 __storage_(make_shared<_Storage>(__p1, path())) {
46 __create_what(1);
47 }
48
49 _LIBCPP_INLINE_VISIBILITY
filesystem_error(const string & __what,const path & __p1,const path & __p2,error_code __ec)50 filesystem_error(const string& __what, const path& __p1, const path& __p2,
51 error_code __ec)
52 : system_error(__ec, __what),
53 __storage_(make_shared<_Storage>(__p1, __p2)) {
54 __create_what(2);
55 }
56
57 _LIBCPP_INLINE_VISIBILITY
path1()58 const path& path1() const noexcept { return __storage_->__p1_; }
59
60 _LIBCPP_INLINE_VISIBILITY
path2()61 const path& path2() const noexcept { return __storage_->__p2_; }
62
63 _LIBCPP_HIDE_FROM_ABI filesystem_error(const filesystem_error&) = default;
64 ~filesystem_error() override; // key function
65
66 _LIBCPP_HIDE_FROM_ABI_VIRTUAL
what()67 const char* what() const noexcept override {
68 return __storage_->__what_.c_str();
69 }
70
71 void __create_what(int __num_paths);
72
73 private:
74 struct _LIBCPP_HIDDEN _Storage {
75 _LIBCPP_INLINE_VISIBILITY
_Storage_Storage76 _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {}
77
78 path __p1_;
79 path __p2_;
80 string __what_;
81 };
82 shared_ptr<_Storage> __storage_;
83 };
84
85 // TODO(ldionne): We need to pop the pragma and push it again after
86 // filesystem_error to work around PR41078.
87 _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH
88
89 template <class... _Args>
90 _LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
91 #ifndef _LIBCPP_HAS_NO_EXCEPTIONS
__throw_filesystem_error(_Args &&...__args)92 void __throw_filesystem_error(_Args&&... __args) {
93 throw filesystem_error(_VSTD::forward<_Args>(__args)...);
94 }
95 #else
96 void __throw_filesystem_error(_Args&&...) {
97 _LIBCPP_VERBOSE_ABORT("filesystem_error was thrown in -fno-exceptions mode");
98 }
99 #endif
100 _LIBCPP_AVAILABILITY_FILESYSTEM_POP
101
102 _LIBCPP_END_NAMESPACE_FILESYSTEM
103
104 #endif // _LIBCPP_CXX03_LANG
105
106 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H
107