1//===- Error.cpp - system_error extensions for llvm-readobj -----*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This defines a new error_category for the llvm-readobj tool.
11//
12//===----------------------------------------------------------------------===//
13
14#include "Error.h"
15#include "llvm/Support/ErrorHandling.h"
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 _readobj_error_category : public std::error_category {
24public:
25  const char* name() const LLVM_NOEXCEPT override;
26  std::string message(int ev) const override;
27};
28} // namespace
29
30const char *_readobj_error_category::name() const LLVM_NOEXCEPT {
31  return "llvm.readobj";
32}
33
34std::string _readobj_error_category::message(int EV) const {
35  switch (static_cast<readobj_error>(EV)) {
36  case readobj_error::success: return "Success";
37  case readobj_error::file_not_found:
38    return "No such file.";
39  case readobj_error::unsupported_file_format:
40    return "The file was not recognized as a valid object file.";
41  case readobj_error::unrecognized_file_format:
42    return "Unrecognized file type.";
43  case readobj_error::unsupported_obj_file_format:
44    return "Unsupported object file format.";
45  case readobj_error::unknown_symbol:
46    return "Unknown symbol.";
47  }
48  llvm_unreachable("An enumerator of readobj_error does not have a message "
49                   "defined.");
50}
51
52namespace llvm {
53const std::error_category &readobj_category() {
54  static _readobj_error_category o;
55  return o;
56}
57} // namespace llvm
58