Error.cpp revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
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 {
20class _readobj_error_category : public error_category {
21public:
22  const char* name() const override;
23  std::string message(int ev) const override;
24  error_condition default_error_condition(int ev) const override;
25};
26} // namespace
27
28const char *_readobj_error_category::name() const {
29  return "llvm.readobj";
30}
31
32std::string _readobj_error_category::message(int ev) const {
33  switch (ev) {
34  case readobj_error::success: return "Success";
35  case readobj_error::file_not_found:
36    return "No such file.";
37  case readobj_error::unsupported_file_format:
38    return "The file was not recognized as a valid object file.";
39  case readobj_error::unrecognized_file_format:
40    return "Unrecognized file type.";
41  case readobj_error::unsupported_obj_file_format:
42    return "Unsupported object file format.";
43  case readobj_error::unknown_symbol:
44    return "Unknown symbol.";
45  default:
46    llvm_unreachable("An enumerator of readobj_error does not have a message "
47                     "defined.");
48  }
49}
50
51error_condition _readobj_error_category::default_error_condition(int ev) const {
52  if (ev == readobj_error::success)
53    return errc::success;
54  return errc::invalid_argument;
55}
56
57namespace llvm {
58const error_category &readobj_category() {
59  static _readobj_error_category o;
60  return o;
61}
62} // namespace llvm
63