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 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 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 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 56 const path& path1() const noexcept { return __storage_->__p1_; } 57 58 _LIBCPP_INLINE_VISIBILITY 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 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 74 _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 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