lib/Object/Error.cpp

   1 //===- Error.cpp - system_error extensions for Object -----------*- 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 Object library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/Object/Error.h"
  15 #include "llvm/Support/ErrorHandling.h"
  16
  17 using namespace llvm;
  18 using namespace object;
  19
  20 namespace {
  21 class _object_error_category : public _do_message {
  22 public:
  23   virtual const char* name() const;
  24   virtual std::string message(int ev) const;
  25   virtual error_condition default_error_condition(int ev) const;
  26 };
  27 }
  28
  29 const char *_object_error_category::name() const {
  30   return "llvm.object";
  31 }
  32
  33 std::string _object_error_category::message(int ev) const {
  34   switch (ev) {
  35   case object_error::success: return "Success";
  36   case object_error::invalid_file_type:
  37     return "The file was not recognized as a valid object file";
  38   case object_error::parse_failed:
  39     return "Invalid data was encountered while parsing the file";
  40   case object_error::unexpected_eof:
  41     return "The end of the file was unexpectedly encountered";
  42   default:
  43     llvm_unreachable("An enumerator of object_error does not have a message "
  44                      "defined.");
  45   }
  46 }
  47
  48 error_condition _object_error_category::default_error_condition(int ev) const {
  49   if (ev == object_error::success)
  50     return errc::success;
  51   return errc::invalid_argument;
  52 }
  53
  54 const error_category &object::object_category() {
  55   static _object_error_category o;
  56   return o;
  57 }