1 //===- Error.cpp - system_error extensions for llvm-readobj -----*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This defines a new error_category for the llvm-readobj tool. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "Error.h" 14 #include "llvm/Support/ErrorHandling.h" 15 16 using namespace llvm; 17 18 namespace { 19 // FIXME: This class is only here to support the transition to llvm::Error. It 20 // will be removed once this transition is complete. Clients should prefer to 21 // deal with the Error value directly, rather than converting to error_code. 22 class _readobj_error_category : public std::error_category { 23 public: 24 const char* name() const noexcept override; 25 std::string message(int ev) const override; 26 }; 27 } // namespace 28 name() const29const char *_readobj_error_category::name() const noexcept { 30 return "llvm.readobj"; 31 } 32 message(int EV) const33std::string _readobj_error_category::message(int EV) const { 34 switch (static_cast<readobj_error>(EV)) { 35 case readobj_error::success: return "Success"; 36 case readobj_error::file_not_found: 37 return "No such file."; 38 case readobj_error::unsupported_file_format: 39 return "The file was not recognized as a valid object file."; 40 case readobj_error::unrecognized_file_format: 41 return "Unrecognized file type."; 42 case readobj_error::unsupported_obj_file_format: 43 return "Unsupported object file format."; 44 case readobj_error::unknown_symbol: 45 return "Unknown symbol."; 46 } 47 llvm_unreachable("An enumerator of readobj_error does not have a message " 48 "defined."); 49 } 50 51 namespace llvm { readobj_category()52const std::error_category &readobj_category() { 53 static _readobj_error_category o; 54 return o; 55 } 56 } // namespace llvm 57