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       1             : //===- Error.cpp - system_error extensions for PDB --------------*- 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/PDB/GenericError.h"
      11             : #include "llvm/Support/ErrorHandling.h"
      12             : #include "llvm/Support/ManagedStatic.h"
      13             : 
      14             : using namespace llvm;
      15             : using namespace llvm::pdb;
      16             : 
      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           1 : class PDBErrorCategory : public std::error_category {
      21             : public:
      22           0 :   const char *name() const noexcept override { return "llvm.pdb"; }
      23           2 :   std::string message(int Condition) const override {
      24           2 :     switch (static_cast<pdb_error_code>(Condition)) {
      25             :     case pdb_error_code::unspecified:
      26           0 :       return "An unknown error has occurred.";
      27             :     case pdb_error_code::type_server_not_found:
      28           0 :         return "Type server PDB was not found.";
      29             :     case pdb_error_code::dia_sdk_not_present:
      30             :       return "LLVM was not compiled with support for DIA. This usually means "
      31             :              "that you are not using MSVC, or your Visual Studio "
      32           0 :              "installation is corrupt.";
      33             :     case pdb_error_code::dia_failed_loading:
      34           0 :       return "DIA is only supported when using MSVC.";
      35             :     case pdb_error_code::invalid_utf8_path:
      36           0 :       return "The PDB file path is an invalid UTF8 sequence.";
      37             :     case pdb_error_code::signature_out_of_date:
      38           2 :       return "The signature does not match; the file(s) might be out of date.";
      39             :     }
      40           0 :     llvm_unreachable("Unrecognized generic_error_code");
      41             :   }
      42             : };
      43             : 
      44             : static llvm::ManagedStatic<PDBErrorCategory> PDBCategory;
      45           1 : const std::error_category &llvm::pdb::PDBErrCategory() { return *PDBCategory; }
      46             : 
      47             : char PDBError::ID;