1//===- Error.cpp - system_error extensions for llvm-readobj -----*- 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-readobj 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 _readobj_error_category : public std::error_category {
23public:
24  const char* name() const noexcept override;
25  std::string message(int ev) const override;
26};
27} // namespace
28
29const char *_readobj_error_category::name() const noexcept {
30  return "llvm.readobj";
31}
32
33std::string _readobj_error_category::message(int EV) const {
34  switch (static_cast<readobj_error>(EV)) {
35  case readobj_error::success: return "Success";
36  case readobj_error::file_not_found:
37    return "No such file.";
38  case readobj_error::unsupported_file_format:
39    return "The file was not recognized as a valid object file.";
40  case readobj_error::unrecognized_file_format:
41    return "Unrecognized file type.";
42  case readobj_error::unsupported_obj_file_format:
43    return "Unsupported object file format.";
44  case readobj_error::unknown_symbol:
45    return "Unknown symbol.";
46  }
47  llvm_unreachable("An enumerator of readobj_error does not have a message "
48                   "defined.");
49}
50
51namespace llvm {
52const std::error_category &readobj_category() {
53  static _readobj_error_category o;
54  return o;
55}
56} // namespace llvm
57