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: name() const23 const char *name() const noexcept override { return "llvm.codeview"; } 24 message(int Condition) const25 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::no_records: 35 return "There are no records"; 36 case cv_error_code::operation_unsupported: 37 return "The requested operation is not supported."; 38 case cv_error_code::unknown_member_record: 39 return "The member record is of an unknown type."; 40 } 41 llvm_unreachable("Unrecognized cv_error_code"); 42 } 43 }; 44 } // end anonymous namespace 45 46 static ManagedStatic<CodeViewErrorCategory> Category; 47 48 char CodeViewError::ID = 0; 49 CodeViewError(cv_error_code C)50CodeViewError::CodeViewError(cv_error_code C) : CodeViewError(C, "") {} 51 CodeViewError(const std::string & Context)52CodeViewError::CodeViewError(const std::string &Context) 53 : CodeViewError(cv_error_code::unspecified, Context) {} 54 CodeViewError(cv_error_code C,const std::string & Context)55CodeViewError::CodeViewError(cv_error_code C, const std::string &Context) 56 : Code(C) { 57 ErrMsg = "CodeView Error: "; 58 std::error_code EC = convertToErrorCode(); 59 if (Code != cv_error_code::unspecified) 60 ErrMsg += EC.message() + " "; 61 if (!Context.empty()) 62 ErrMsg += Context; 63 } 64 log(raw_ostream & OS) const65void CodeViewError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; } 66 getErrorMessage() const67const std::string &CodeViewError::getErrorMessage() const { return ErrMsg; } 68 convertToErrorCode() const69std::error_code CodeViewError::convertToErrorCode() const { 70 return std::error_code(static_cast<int>(Code), *Category); 71 } 72