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 <string> 22 23 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 24 # pragma GCC system_header 25 #endif 26 27 #if _LIBCPP_STD_VER >= 17 28 29 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 30 31 class _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY _LIBCPP_EXPORTED_FROM_ABI filesystem_error : public system_error { 32 public: 33 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, error_code __ec) 34 : system_error(__ec, __what), __storage_(make_shared<_Storage>(path(), path())) { 35 __create_what(0); 36 } 37 38 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, error_code __ec) 39 : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, path())) { 40 __create_what(1); 41 } 42 43 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, const path& __p2, error_code __ec) 44 : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, __p2)) { 45 __create_what(2); 46 } 47 48 _LIBCPP_HIDE_FROM_ABI const path& path1() const noexcept { return __storage_->__p1_; } 49 50 _LIBCPP_HIDE_FROM_ABI const path& path2() const noexcept { return __storage_->__p2_; } 51 52 _LIBCPP_HIDE_FROM_ABI filesystem_error(const filesystem_error&) = default; 53 ~filesystem_error() override; // key function 54 55 _LIBCPP_HIDE_FROM_ABI_VIRTUAL 56 const char* what() const noexcept override { return __storage_->__what_.c_str(); } 57 58 void __create_what(int __num_paths); 59 60 private: 61 struct _LIBCPP_HIDDEN _Storage { 62 _LIBCPP_HIDE_FROM_ABI _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {} 63 64 path __p1_; 65 path __p2_; 66 string __what_; 67 }; 68 shared_ptr<_Storage> __storage_; 69 }; 70 71 # ifndef _LIBCPP_HAS_NO_EXCEPTIONS 72 template <class... _Args> 73 _LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void 74 __throw_filesystem_error(_Args&&... __args) { 75 throw filesystem_error(std::forward<_Args>(__args)...); 76 } 77 # else 78 template <class... _Args> 79 _LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void 80 __throw_filesystem_error(_Args&&...) { 81 _LIBCPP_VERBOSE_ABORT("filesystem_error was thrown in -fno-exceptions mode"); 82 } 83 # endif 84 85 _LIBCPP_END_NAMESPACE_FILESYSTEM 86 87 #endif // _LIBCPP_STD_VER >= 17 88 89 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H 90