1 //===- MSFError.cpp - Error extensions for MSF files ------------*- 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/MSF/MSFError.h" 11 #include "llvm/Support/ErrorHandling.h" 12 #include "llvm/Support/ManagedStatic.h" 13 14 using namespace llvm; 15 using namespace llvm::msf; 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 MSFErrorCategory : public std::error_category { 22 public: name() const23 const char *name() const noexcept override { return "llvm.msf"; } 24 message(int Condition) const25 std::string message(int Condition) const override { 26 switch (static_cast<msf_error_code>(Condition)) { 27 case msf_error_code::unspecified: 28 return "An unknown error has occurred."; 29 case msf_error_code::insufficient_buffer: 30 return "The buffer is not large enough to read the requested number of " 31 "bytes."; 32 case msf_error_code::not_writable: 33 return "The specified stream is not writable."; 34 case msf_error_code::no_stream: 35 return "The specified stream does not exist."; 36 case msf_error_code::invalid_format: 37 return "The data is in an unexpected format."; 38 case msf_error_code::block_in_use: 39 return "The block is already in use."; 40 } 41 llvm_unreachable("Unrecognized msf_error_code"); 42 } 43 }; 44 } // end anonymous namespace 45 46 static ManagedStatic<MSFErrorCategory> Category; 47 48 char MSFError::ID = 0; 49 MSFError(msf_error_code C)50MSFError::MSFError(msf_error_code C) : MSFError(C, "") {} 51 MSFError(const std::string & Context)52MSFError::MSFError(const std::string &Context) 53 : MSFError(msf_error_code::unspecified, Context) {} 54 MSFError(msf_error_code C,const std::string & Context)55MSFError::MSFError(msf_error_code C, const std::string &Context) : Code(C) { 56 ErrMsg = "MSF Error: "; 57 std::error_code EC = convertToErrorCode(); 58 if (Code != msf_error_code::unspecified) 59 ErrMsg += EC.message() + " "; 60 if (!Context.empty()) 61 ErrMsg += Context; 62 } 63 log(raw_ostream & OS) const64void MSFError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; } 65 getErrorMessage() const66const std::string &MSFError::getErrorMessage() const { return ErrMsg; } 67 convertToErrorCode() const68std::error_code MSFError::convertToErrorCode() const { 69 return std::error_code(static_cast<int>(Code), *Category); 70 } 71