src/llvm/tools/llvm-readobj/Error.cpp

   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
  27 const char *_readobj_error_category::name() const LLVM_NOEXCEPT {
  28   return "llvm.readobj";
  29 }
  30
  31 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 {
  50 const std::error_category &readobj_category() {
  51   static _readobj_error_category o;
  52   return o;
  53 }
  54 } // namespace llvm