llvm/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 #include <string>
  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:
  23   const char *name() const noexcept override { return "llvm.msf"; }
  24   std::string message(int Condition) const override {
  25     switch (static_cast<msf_error_code>(Condition)) {
  26     case msf_error_code::unspecified:
  27       return "An unknown error has occurred.";
  28     case msf_error_code::insufficient_buffer:
  29       return "The buffer is not large enough to read the requested number of "
  30              "bytes.";
  31     case msf_error_code::size_overflow:
  32       return "Output data is larger than 4 GiB.";
  33     case msf_error_code::not_writable:
  34       return "The specified stream is not writable.";
  35     case msf_error_code::no_stream:
  36       return "The specified stream does not exist.";
  37     case msf_error_code::invalid_format:
  38       return "The data is in an unexpected format.";
  39     case msf_error_code::block_in_use:
  40       return "The block is already in use.";
  41     }
  42     llvm_unreachable("Unrecognized msf_error_code");
  43   }
  44 };
  45 } // namespace
  46
  47 static llvm::ManagedStatic<MSFErrorCategory> MSFCategory;
  48 const std::error_category &llvm::msf::MSFErrCategory() { return *MSFCategory; }
  49
  50 char MSFError::ID;