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 <__config> 14 #include <__filesystem/path.h> 15 #include <__memory/shared_ptr.h> 16 #include <__system_error/error_code.h> 17 #include <__system_error/system_error.h> 18 #include <__utility/forward.h> 19 #include <__verbose_abort> 20 #include <string> 21 22 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 23 # pragma GCC system_header 24 #endif 25 26 #if _LIBCPP_STD_VER >= 17 27 28 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 29 30 class _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY _LIBCPP_EXPORTED_FROM_ABI filesystem_error : public system_error { 31 public: 32 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, error_code __ec) 33 : system_error(__ec, __what), __storage_(make_shared<_Storage>(path(), path())) { 34 __create_what(0); 35 } 36 37 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, error_code __ec) 38 : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, path())) { 39 __create_what(1); 40 } 41 42 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, const path& __p2, error_code __ec) 43 : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, __p2)) { 44 __create_what(2); 45 } 46 47 _LIBCPP_HIDE_FROM_ABI const path& path1() const noexcept { return __storage_->__p1_; } 48 49 _LIBCPP_HIDE_FROM_ABI const path& path2() const noexcept { return __storage_->__p2_; } 50 51 _LIBCPP_HIDE_FROM_ABI filesystem_error(const filesystem_error&) = default; 52 ~filesystem_error() override; // key function 53 54 _LIBCPP_HIDE_FROM_ABI_VIRTUAL 55 const char* what() const noexcept override { return __storage_->__what_.c_str(); } 56 57 void __create_what(int __num_paths); 58 59 private: 60 struct _LIBCPP_HIDDEN _Storage { 61 _LIBCPP_HIDE_FROM_ABI _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {} 62 63 path __p1_; 64 path __p2_; 65 string __what_; 66 }; 67 shared_ptr<_Storage> __storage_; 68 }; 69 70 # ifndef _LIBCPP_HAS_NO_EXCEPTIONS 71 template <class... _Args> 72 _LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void 73 __throw_filesystem_error(_Args&&... __args) { 74 throw filesystem_error(std::forward<_Args>(__args)...); 75 } 76 # else 77 template <class... _Args> 78 _LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void 79 __throw_filesystem_error(_Args&&...) { 80 _LIBCPP_VERBOSE_ABORT("filesystem_error was thrown in -fno-exceptions mode"); 81 } 82 # endif 83 84 _LIBCPP_END_NAMESPACE_FILESYSTEM 85 86 #endif // _LIBCPP_STD_VER >= 17 87 88 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H 89