1//===- Error.cpp - system_error extensions for llvm-cxxdump -----*- C++ -*-===//
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// This defines a new error_category for the llvm-cxxdump tool.
10//
11//===----------------------------------------------------------------------===//
12
13#include "Error.h"
14#include "llvm/Support/ErrorHandling.h"
15#include <string>
16
17using namespace llvm;
18
19namespace {
20// FIXME: This class is only here to support the transition to llvm::Error. It
21// will be removed once this transition is complete. Clients should prefer to
22// deal with the Error value directly, rather than converting to error_code.
23class cxxdump_error_category : public std::error_category {
24public:
25 const char *name() const noexcept override { return "llvm.cxxdump"; }
26 std::string message(int ev) const override {
27 switch (static_cast<cxxdump_error>(ev)) {
28 case cxxdump_error::success:
29 return "Success";
30 case cxxdump_error::file_not_found:
31 return "No such file.";
32 case cxxdump_error::unrecognized_file_format:
33 return "Unrecognized file type.";
34 }
35 llvm_unreachable(
36 "An enumerator of cxxdump_error does not have a message defined.");
37 }
38};
39} // namespace
40
41namespace llvm {
42const std::error_category &cxxdump_category() {
43 static cxxdump_error_category o;
44 return o;
45}
46} // namespace llvm
47