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      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 std::error_category {
     22 public:
     23   const char* name() const LLVM_NOEXCEPT override;
     24   std::string message(int ev) const override;
     25 };
     26 }
     27 
     28 const char *_object_error_category::name() const {
     29   return "llvm.object";
     30 }
     31 
     32 std::string _object_error_category::message(int EV) const {
     33   object_error E = static_cast<object_error>(EV);
     34   switch (E) {
     35   case object_error::success: return "Success";
     36   case object_error::arch_not_found:
     37     return "No object file for requested architecture";
     38   case object_error::invalid_file_type:
     39     return "The file was not recognized as a valid object file";
     40   case object_error::parse_failed:
     41     return "Invalid data was encountered while parsing the file";
     42   case object_error::unexpected_eof:
     43     return "The end of the file was unexpectedly encountered";
     44   }
     45   llvm_unreachable("An enumerator of object_error does not have a message "
     46                    "defined.");
     47 }
     48 
     49 const std::error_category &object::object_category() {
     50   static _object_error_category o;
     51   return o;
     52 }
     53