lib/DebugInfo/MSF/MSFError.cpp

   1 //===- MSFError.cpp - Error extensions for MSF files ------------*- 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/MSF/MSFError.h"
  10 #include "llvm/Support/ErrorHandling.h"
  11 #include "llvm/Support/ManagedStatic.h"
  12
  13 using namespace llvm;
  14 using namespace llvm::msf;
  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 MSFErrorCategory : public std::error_category {
  21 public:
  22   const char *name() const noexcept override { return "llvm.msf"; }
  23   std::string message(int Condition) const override {
  24     switch (static_cast<msf_error_code>(Condition)) {
  25     case msf_error_code::unspecified:
  26       return "An unknown error has occurred.";
  27     case msf_error_code::insufficient_buffer:
  28       return "The buffer is not large enough to read the requested number of "
  29              "bytes.";
  30     case msf_error_code::not_writable:
  31       return "The specified stream is not writable.";
  32     case msf_error_code::no_stream:
  33       return "The specified stream does not exist.";
  34     case msf_error_code::invalid_format:
  35       return "The data is in an unexpected format.";
  36     case msf_error_code::block_in_use:
  37       return "The block is already in use.";
  38     }
  39     llvm_unreachable("Unrecognized msf_error_code");
  40   }
  41 };
  42 } // namespace
  43
  44 static llvm::ManagedStatic<MSFErrorCategory> MSFCategory;
  45 const std::error_category &llvm::msf::MSFErrCategory() { return *MSFCategory; }
  46
  47 char MSFError::ID;