Home | History | Annotate | Line # | Download | only in PDB 
      1 //===- Error.cpp - system_error extensions for PDB --------------*- C++ -*-===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 
      9 #include "llvm/DebugInfo/PDB/GenericError.h"
     10 #include "llvm/Support/ErrorHandling.h"
     11 #include "llvm/Support/ManagedStatic.h"
     12 
     13 using namespace llvm;
     14 using namespace llvm::pdb;
     15 
     16 namespace {
     17 // FIXME: This class is only here to support the transition to llvm::Error. It
     18 // will be removed once this transition is complete. Clients should prefer to
     19 // deal with the Error value directly, rather than converting to error_code.
     20 class PDBErrorCategory : public std::error_category {
     21 public:
     22   const char *name() const noexcept override { return "llvm.pdb"; }
     23   std::string message(int Condition) const override {
     24     switch (static_cast<pdb_error_code>(Condition)) {
     25     case pdb_error_code::unspecified:
     26       return "An unknown error has occurred.";
     27     case pdb_error_code::dia_sdk_not_present:
     28       return "LLVM was not compiled with support for DIA. This usually means "
     29              "that you are not using MSVC, or your Visual Studio "
     30              "installation is corrupt.";
     31     case pdb_error_code::dia_failed_loading:
     32       return "DIA is only supported when using MSVC.";
     33     case pdb_error_code::invalid_utf8_path:
     34       return "The PDB file path is an invalid UTF8 sequence.";
     35     case pdb_error_code::signature_out_of_date:
     36       return "The signature does not match; the file(s) might be out of date.";
     37     case pdb_error_code::no_matching_pch:
     38       return "No matching precompiled header could be located.";
     39     }
     40     llvm_unreachable("Unrecognized generic_error_code");
     41   }
     42 };
     43 } // namespace
     44 
     45 static llvm::ManagedStatic<PDBErrorCategory> PDBCategory;
     46 const std::error_category &llvm::pdb::PDBErrCategory() { return *PDBCategory; }
     47 
     48 char PDBError::ID;
     49