1 //===- CodeViewError.cpp - Error extensions for CodeView --------*- 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/CodeView/CodeViewError.h" 11 #include "llvm/Support/ErrorHandling.h" 12 #include "llvm/Support/ManagedStatic.h" 13 14 using namespace llvm; 15 using namespace llvm::codeview; 16 17 namespace { 18 // FIXME: This class is only here to support the transition to llvm::Error. It 19 // will be removed once this transition is complete. Clients should prefer to 20 // deal with the Error value directly, rather than converting to error_code. 21 class CodeViewErrorCategory : public std::error_category { 22 public: 23 const char *name() const noexcept override { return "llvm.codeview"; } 24 25 std::string message(int Condition) const override { 26 switch (static_cast<cv_error_code>(Condition)) { 27 case cv_error_code::unspecified: 28 return "An unknown error has occurred."; 29 case cv_error_code::insufficient_buffer: 30 return "The buffer is not large enough to read the requested number of " 31 "bytes."; 32 case cv_error_code::corrupt_record: 33 return "The CodeView record is corrupted."; 34 case cv_error_code::operation_unsupported: 35 return "The requested operation is not supported."; 36 case cv_error_code::unknown_member_record: 37 return "The member record is of an unknown type."; 38 } 39 llvm_unreachable("Unrecognized cv_error_code"); 40 } 41 }; 42 } // end anonymous namespace 43 44 static ManagedStatic<CodeViewErrorCategory> Category; 45 46 char CodeViewError::ID = 0; 47 48 CodeViewError::CodeViewError(cv_error_code C) : CodeViewError(C, "") {} 49 50 CodeViewError::CodeViewError(const std::string &Context) 51 : CodeViewError(cv_error_code::unspecified, Context) {} 52 53 CodeViewError::CodeViewError(cv_error_code C, const std::string &Context) 54 : Code(C) { 55 ErrMsg = "CodeView Error: "; 56 std::error_code EC = convertToErrorCode(); 57 if (Code != cv_error_code::unspecified) 58 ErrMsg += EC.message() + " "; 59 if (!Context.empty()) 60 ErrMsg += Context; 61 } 62 63 void CodeViewError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; } 64 65 const std::string &CodeViewError::getErrorMessage() const { return ErrMsg; } 66 67 std::error_code CodeViewError::convertToErrorCode() const { 68 return std::error_code(static_cast<int>(Code), *Category); 69 } 70