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_LIBRARY _LIBCPP_EXPORTED_FROM_ABI filesystem_error : public system_error { 34 public: 35 _LIBCPP_INLINE_VISIBILITY 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 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 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 58 const path& path1() const noexcept { return __storage_->__p1_; } 59 60 _LIBCPP_INLINE_VISIBILITY 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 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 76 _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_LIBRARY_PUSH 88 89 template <class... _Args> 90 _LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY 91 #ifndef _LIBCPP_HAS_NO_EXCEPTIONS 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_LIBRARY_POP 101 102 _LIBCPP_END_NAMESPACE_FILESYSTEM 103 104 #endif // _LIBCPP_CXX03_LANG 105 106 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H 107