1 //===- Error.cpp - system_error extensions for PDB --------------*- 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 #include "llvm/DebugInfo/PDB/GenericError.h" 11 #include "llvm/Support/ErrorHandling.h" 12 #include "llvm/Support/ManagedStatic.h" 13 14 using namespace llvm; 15 using namespace llvm::pdb; 16 17 class GenericErrorCategory : public std::error_category { 18 public: 19 const char *name() const LLVM_NOEXCEPT override { return "llvm.pdb"; } 20 21 std::string message(int Condition) const override { 22 switch (static_cast<generic_error_code>(Condition)) { 23 case generic_error_code::unspecified: 24 return "An unknown error has occurred."; 25 case generic_error_code::dia_sdk_not_present: 26 return "LLVM was not compiled with support for DIA. This usually means " 27 "that you are are not using MSVC, or your Visual Studio " 28 "installation " 29 "is corrupt."; 30 case generic_error_code::invalid_path: 31 return "Unable to load PDB. Make sure the file exists and is readable."; 32 } 33 llvm_unreachable("Unrecognized generic_error_code"); 34 } 35 }; 36 37 static ManagedStatic<GenericErrorCategory> Category; 38 39 char GenericError::ID = 0; 40 41 GenericError::GenericError(generic_error_code C) : GenericError(C, "") {} 42 43 GenericError::GenericError(const std::string &Context) 44 : GenericError(generic_error_code::unspecified, Context) {} 45 46 GenericError::GenericError(generic_error_code C, const std::string &Context) 47 : Code(C) { 48 ErrMsg = "PDB Error: "; 49 std::error_code EC = convertToErrorCode(); 50 if (Code != generic_error_code::unspecified) 51 ErrMsg += EC.message() + " "; 52 if (!Context.empty()) 53 ErrMsg += Context; 54 } 55 56 void GenericError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; } 57 58 const std::string &GenericError::getErrorMessage() const { return ErrMsg; } 59 60 std::error_code GenericError::convertToErrorCode() const { 61 return std::error_code(static_cast<int>(Code), *Category); 62 } 63