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_HIDE_FROM_ABI filesystem_error(const string& __what, error_code __ec) 36 : system_error(__ec, __what), __storage_(make_shared<_Storage>(path(), path())) { 37 __create_what(0); 38 } 39 40 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, error_code __ec) 41 : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, path())) { 42 __create_what(1); 43 } 44 45 _LIBCPP_HIDE_FROM_ABI filesystem_error(const string& __what, const path& __p1, const path& __p2, error_code __ec) 46 : system_error(__ec, __what), __storage_(make_shared<_Storage>(__p1, __p2)) { 47 __create_what(2); 48 } 49 50 _LIBCPP_HIDE_FROM_ABI const path& path1() const noexcept { return __storage_->__p1_; } 51 52 _LIBCPP_HIDE_FROM_ABI const path& path2() const noexcept { return __storage_->__p2_; } 53 54 _LIBCPP_HIDE_FROM_ABI filesystem_error(const filesystem_error&) = default; 55 ~filesystem_error() override; // key function 56 57 _LIBCPP_HIDE_FROM_ABI_VIRTUAL 58 const char* what() const noexcept override { return __storage_->__what_.c_str(); } 59 60 void __create_what(int __num_paths); 61 62 private: 63 struct _LIBCPP_HIDDEN _Storage { 64 _LIBCPP_HIDE_FROM_ABI _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {} 65 66 path __p1_; 67 path __p2_; 68 string __what_; 69 }; 70 shared_ptr<_Storage> __storage_; 71 }; 72 73 # ifndef _LIBCPP_HAS_NO_EXCEPTIONS 74 template <class... _Args> 75 _LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void 76 __throw_filesystem_error(_Args&&... __args) { 77 throw filesystem_error(_VSTD::forward<_Args>(__args)...); 78 } 79 # else 80 template <class... _Args> 81 _LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY void 82 __throw_filesystem_error(_Args&&...) { 83 _LIBCPP_VERBOSE_ABORT("filesystem_error was thrown in -fno-exceptions mode"); 84 } 85 # endif 86 87 _LIBCPP_END_NAMESPACE_FILESYSTEM 88 89 #endif // _LIBCPP_CXX03_LANG 90 91 #endif // _LIBCPP___FILESYSTEM_FILESYSTEM_ERROR_H 92