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 #include "llvm/Support/ManagedStatic.h"
  17
  18 using namespace llvm;
  19 using namespace object;
  20
  21 namespace {
  22 class _object_error_category : public std::error_category {
  23 public:
  24   const char* name() const LLVM_NOEXCEPT override;
  25   std::string message(int ev) const override;
  26 };
  27 }
  28
  29 const char *_object_error_category::name() const LLVM_NOEXCEPT {
  30   return "llvm.object";
  31 }
  32
  33 std::string _object_error_category::message(int EV) const {
  34   object_error E = static_cast<object_error>(EV);
  35   switch (E) {
  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   case object_error::string_table_non_null_end:
  45     return "String table must end with a null terminator";
  46   case object_error::invalid_section_index:
  47     return "Invalid section index";
  48   case object_error::bitcode_section_not_found:
  49     return "Bitcode section not found in object file";
  50   case object_error::elf_invalid_dynamic_table_size:
  51     return "Invalid dynamic table size";
  52   case object_error::macho_small_load_command:
  53     return "Mach-O load command with size < 8 bytes";
  54   case object_error::macho_load_segment_too_many_sections:
  55     return "Mach-O segment load command contains too many sections";
  56   case object_error::macho_load_segment_too_small:
  57     return "Mach-O segment load command size is too small";
  58   }
  59   llvm_unreachable("An enumerator of object_error does not have a message "
  60                    "defined.");
  61 }
  62
  63 static ManagedStatic<_object_error_category> error_category;
  64
  65 const std::error_category &object::object_category() {
  66   return *error_category;
  67 }