1 //===- Error.cpp - system_error extensions for PDB --------------*- 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 #include "llvm/DebugInfo/PDB/GenericError.h" 10 #include "llvm/Support/ErrorHandling.h" 11 12 using namespace llvm; 13 using namespace llvm::pdb; 14 15 namespace { 16 // FIXME: This class is only here to support the transition to llvm::Error. It 17 // will be removed once this transition is complete. Clients should prefer to 18 // deal with the Error value directly, rather than converting to error_code. 19 class PDBErrorCategory : public std::error_category { 20 public: 21 const char *name() const noexcept override { return "llvm.pdb"; } 22 std::string message(int Condition) const override { 23 switch (static_cast<pdb_error_code>(Condition)) { 24 case pdb_error_code::unspecified: 25 return "An unknown error has occurred."; 26 case pdb_error_code::dia_sdk_not_present: 27 return "LLVM was not compiled with support for DIA. This usually means " 28 "that you are not using MSVC, or your Visual Studio " 29 "installation is corrupt."; 30 case pdb_error_code::dia_failed_loading: 31 return "DIA is only supported when using MSVC."; 32 case pdb_error_code::invalid_utf8_path: 33 return "The PDB file path is an invalid UTF8 sequence."; 34 case pdb_error_code::signature_out_of_date: 35 return "The signature does not match; the file(s) might be out of date."; 36 case pdb_error_code::no_matching_pch: 37 return "No matching precompiled header could be located."; 38 } 39 llvm_unreachable("Unrecognized generic_error_code"); 40 } 41 }; 42 } // namespace 43 44 const std::error_category &llvm::pdb::PDBErrCategory() { 45 static PDBErrorCategory PDBCategory; 46 return PDBCategory; 47 } 48 49 char PDBError::ID; 50