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 
17 using namespace llvm;
18 
19 namespace {
20 class _readobj_error_category : public std::error_category {
21 public:
22   const char* name() const LLVM_NOEXCEPT override;
23   std::string message(int ev) const override;
24 };
25 } // namespace
26 
name() const27 const char *_readobj_error_category::name() const LLVM_NOEXCEPT {
28   return "llvm.readobj";
29 }
30 
message(int EV) const31 std::string _readobj_error_category::message(int EV) const {
32   switch (static_cast<readobj_error>(EV)) {
33   case readobj_error::success: return "Success";
34   case readobj_error::file_not_found:
35     return "No such file.";
36   case readobj_error::unsupported_file_format:
37     return "The file was not recognized as a valid object file.";
38   case readobj_error::unrecognized_file_format:
39     return "Unrecognized file type.";
40   case readobj_error::unsupported_obj_file_format:
41     return "Unsupported object file format.";
42   case readobj_error::unknown_symbol:
43     return "Unknown symbol.";
44   }
45   llvm_unreachable("An enumerator of readobj_error does not have a message "
46                    "defined.");
47 }
48 
49 namespace llvm {
readobj_category()50 const std::error_category &readobj_category() {
51   static _readobj_error_category o;
52   return o;
53 }
54 } // namespace llvm
55