lib/DebugInfo/CodeView/CodeViewError.cpp

   1 //===- CodeViewError.cpp - Error extensions for CodeView --------*- 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/CodeView/CodeViewError.h"
  10 #include "llvm/Support/ErrorHandling.h"
  11 #include "llvm/Support/ManagedStatic.h"
  12
  13 using namespace llvm;
  14 using namespace llvm::codeview;
  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 CodeViewErrorCategory : public std::error_category {
  21 public:
  22   const char *name() const noexcept override { return "llvm.codeview"; }
  23   std::string message(int Condition) const override {
  24     switch (static_cast<cv_error_code>(Condition)) {
  25     case cv_error_code::unspecified:
  26       return "An unknown CodeView error has occurred.";
  27     case cv_error_code::insufficient_buffer:
  28       return "The buffer is not large enough to read the requested number of "
  29              "bytes.";
  30     case cv_error_code::corrupt_record:
  31       return "The CodeView record is corrupted.";
  32     case cv_error_code::no_records:
  33       return "There are no records.";
  34     case cv_error_code::operation_unsupported:
  35       return "The requested operation is not supported.";
  36     case cv_error_code::unknown_member_record:
  37       return "The member record is of an unknown type.";
  38     }
  39     llvm_unreachable("Unrecognized cv_error_code");
  40   }
  41 };
  42 } // namespace
  43
  44 static llvm::ManagedStatic<CodeViewErrorCategory> CodeViewErrCategory;
  45 const std::error_category &llvm::codeview::CVErrorCategory() {
  46   return *CodeViewErrCategory;
  47 }
  48
  49 char CodeViewError::ID;