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35 case pdb_error_code::signature_out_of_date: 36 return "The signature does not match; the file(s) might be out of date."; 37 case pdb_error_code::no_matching_pch: 38 return "No matching precompiled header could be located."; 39 } 40 llvm_unreachable("Unrecognized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