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 #ifndef _LIBCPP_CXX03_LANG 23 24 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 25 26 class _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error { 27 public: 28 _LIBCPP_INLINE_VISIBILITY 29 filesystem_error(const string& __what, error_code __ec) 30 : system_error(__ec, __what), 31 __storage_(make_shared<_Storage>(path(), path())) { 32 __create_what(0); 33 } 34 35 _LIBCPP_INLINE_VISIBILITY 36 filesystem_error(const string& __what, const path& __p1, error_code __ec) 37 : system_error(__ec, __what), 38 __storage_(make_shared<_Storage>(__p1, path())) { 39 __create_what(1); 40 } 41 42 _LIBCPP_INLINE_VISIBILITY 43 filesystem_error(const string& __what, const path& __p1, const path& __p2, 44 error_code __ec) 45 : system_error(__ec, __what), 46 __storage_(make_shared<_Storage>(__p1, __p2)) { 47 __create_what(2); 48 } 49 50 _LIBCPP_INLINE_VISIBILITY 51 const path& path1() const noexcept { return __storage_->__p1_; } 52 53 _LIBCPP_INLINE_VISIBILITY 54 const path& path2() const noexcept { return __storage_->__p2_; } 55 56 filesystem_error(const filesystem_error&) = default; 57 ~filesystem_error() override; // key function 58 59 _LIBCPP_INLINE_VISIBILITY 60 const char* what() const noexcept override { 61 return __storage_->__what_.c_str(); 62 } 63 64 void __create_what(int __num_paths); 65 66 private: 67 struct _LIBCPP_HIDDEN _Storage { 68 _LIBCPP_INLINE_VISIBILITY 69 _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {} 70 71 path __p1_; 72 path __p2_; 73 string __what_; 74 }; 75 shared_ptr<_Storage> __storage_; 76 }; 77 78 // TODO(ldionne): We need to pop the pragma and push it again after 79 // filesystem_error to work around PR41078. 80 _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH 81 82 template <class... _Args> 83 _LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY 84 #ifndef _LIBCPP_NO_EXCEPTIONS 85 void __throw_filesystem_error(_Args&&... __args) { 86 throw filesystem_error(_VSTD::forward<_Args>(__args)...); 87 } 88 #else 89 void __throw_filesystem_error(_Args&&...) { 90 _VSTD::abort(); 91 } 92 #endif 93 _LIBCPP_AVAILABILITY_FILESYSTEM_POP 94 95 _LIBCPP_END_NAMESPACE_FILESYSTEM 96 97 #endif // _LIBCPP_CXX03_LANG 98 99 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H 100