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-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include <__config>
10#include <__utility/unreachable.h>
11#include <filesystem>
12#include <system_error>
13
14#include "format_string.h"
15
16_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
17
18filesystem_error::~filesystem_error() {}
19
20void filesystem_error::__create_what(int __num_paths) {
21 const char* derived_what = system_error::what();
22 __storage_->__what_ = [&]() -> string {
23 switch (__num_paths) {
24 case 0:
25 return detail::format_string("filesystem error: %s", derived_what);
26 case 1:
27 return detail::format_string("filesystem error: %s [" PATH_CSTR_FMT "]", derived_what, path1().c_str());
28 case 2:
29 return detail::format_string(
30 "filesystem error: %s [" PATH_CSTR_FMT "] [" PATH_CSTR_FMT "]",
31 derived_what,
32 path1().c_str(),
33 path2().c_str());
34 }
35 __libcpp_unreachable();
36 }();
37}
38
39_LIBCPP_END_NAMESPACE_FILESYSTEM
40

source code of libcxx/src/filesystem/filesystem_error.cpp