41 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include <__config>10#include <__memory/shared_ptr.h>11#include <__utility/unreachable.h>12#include <filesystem>13#include <system_error>14 15#include "format_string.h"16 17_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM18 19filesystem_error::~filesystem_error() {}20 21void filesystem_error::__create_what(int __num_paths) {22 const char* derived_what = system_error::what();23 __storage_->__what_ = [&]() -> string {24 switch (__num_paths) {25 case 0:26 return detail::format_string("filesystem error: %s", derived_what);27 case 1:28 return detail::format_string("filesystem error: %s [" PATH_CSTR_FMT "]", derived_what, path1().c_str());29 case 2:30 return detail::format_string(31 "filesystem error: %s [" PATH_CSTR_FMT "] [" PATH_CSTR_FMT "]",32 derived_what,33 path1().c_str(),34 path2().c_str());35 }36 __libcpp_unreachable();37 }();38}39 40_LIBCPP_END_NAMESPACE_FILESYSTEM41