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