1 //===- Error.cpp - system_error extensions for llvm-cxxdump -----*- 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-cxxdump 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 cxxdump_error_category : public std::error_category { 23 public: 24 const char *name() const noexcept override { return "llvm.cxxdump"; } 25 std::string message(int ev) const override { 26 switch (static_cast<cxxdump_error>(ev)) { 27 case cxxdump_error::success: 28 return "Success"; 29 case cxxdump_error::file_not_found: 30 return "No such file."; 31 case cxxdump_error::unrecognized_file_format: 32 return "Unrecognized file type."; 33 } 34 llvm_unreachable( 35 "An enumerator of cxxdump_error does not have a message defined."); 36 } 37 }; 38 } // namespace 39 40 namespace llvm { 41 const std::error_category &cxxdump_category() { 42 static cxxdump_error_category o; 43 return o; 44 } 45 } // namespace llvm 46