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 // FIXME: This class is only here to support the transition to llvm::Error. It 21 // will be removed once this transition is complete. Clients should prefer to 22 // deal with the Error value directly, rather than converting to error_code. 23 class _readobj_error_category : public std::error_category { 24 public: 25 const char* name() const LLVM_NOEXCEPT override; 26 std::string message(int ev) const override; 27 }; 28 } // namespace 29 30 const char *_readobj_error_category::name() const LLVM_NOEXCEPT { 31 return "llvm.readobj"; 32 } 33 34 std::string _readobj_error_category::message(int EV) const { 35 switch (static_cast<readobj_error>(EV)) { 36 case readobj_error::success: return "Success"; 37 case readobj_error::file_not_found: 38 return "No such file."; 39 case readobj_error::unsupported_file_format: 40 return "The file was not recognized as a valid object file."; 41 case readobj_error::unrecognized_file_format: 42 return "Unrecognized file type."; 43 case readobj_error::unsupported_obj_file_format: 44 return "Unsupported object file format."; 45 case readobj_error::unknown_symbol: 46 return "Unknown symbol."; 47 } 48 llvm_unreachable("An enumerator of readobj_error does not have a message " 49 "defined."); 50 } 51 52 namespace llvm { 53 const std::error_category &readobj_category() { 54 static _readobj_error_category o; 55 return o; 56 } 57 } // namespace llvm 58
