1 //===- Error.cpp - system_error extensions for PDB --------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/DebugInfo/PDB/GenericError.h"
11 #include "llvm/Support/ErrorHandling.h"
12 #include "llvm/Support/ManagedStatic.h"
15 using namespace llvm::pdb;
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 GenericErrorCategory : public std::error_category {
23 const char *name() const noexcept override { return "llvm.pdb"; }
25 std::string message(int Condition) const override {
26 switch (static_cast<generic_error_code>(Condition)) {
27 case generic_error_code::unspecified:
28 return "An unknown error has occurred.";
29 case generic_error_code::type_server_not_found:
30 return "Type server PDB was not found.";
31 case generic_error_code::dia_sdk_not_present:
32 return "LLVM was not compiled with support for DIA. This usually means "
33 "that you are are not using MSVC, or your Visual Studio "
36 case generic_error_code::invalid_path:
37 return "Unable to load PDB. Make sure the file exists and is readable.";
39 llvm_unreachable("Unrecognized generic_error_code");
42 } // end anonymous namespace
44 static ManagedStatic<GenericErrorCategory> Category;
46 char GenericError::ID = 0;
48 GenericError::GenericError(generic_error_code C) : GenericError(C, "") {}
50 GenericError::GenericError(StringRef Context)
51 : GenericError(generic_error_code::unspecified, Context) {}
53 GenericError::GenericError(generic_error_code C, StringRef Context) : Code(C) {
54 ErrMsg = "PDB Error: ";
55 std::error_code EC = convertToErrorCode();
56 if (Code != generic_error_code::unspecified)
57 ErrMsg += EC.message() + " ";
62 void GenericError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
64 StringRef GenericError::getErrorMessage() const { return ErrMsg; }
66 std::error_code GenericError::convertToErrorCode() const {
67 return std::error_code(static_cast<int>(Code), *Category);