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 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 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 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 55 const path& path1() const noexcept { return __storage_->__p1_; } 56 57 _LIBCPP_INLINE_VISIBILITY 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 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 73 _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 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