lib/Support/BinaryStreamError.cpp

   1 //===- BinaryStreamError.cpp - Error extensions for streams -----*- 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/Support/BinaryStreamError.h"
  10 #include "llvm/Support/ErrorHandling.h"
  11
  12 using namespace llvm;
  13
  14 char BinaryStreamError::ID = 0;
  15
  16 BinaryStreamError::BinaryStreamError(stream_error_code C)
  17     : BinaryStreamError(C, "") {}
  18
  19 BinaryStreamError::BinaryStreamError(StringRef Context)
  20     : BinaryStreamError(stream_error_code::unspecified, Context) {}
  21
  22 BinaryStreamError::BinaryStreamError(stream_error_code C, StringRef Context)
  23     : Code(C) {
  24   ErrMsg = "Stream Error: ";
  25   switch (C) {
  26   case stream_error_code::unspecified:
  27     ErrMsg += "An unspecified error has occurred.";
  28     break;
  29   case stream_error_code::stream_too_short:
  30     ErrMsg += "The stream is too short to perform the requested operation.";
  31     break;
  32   case stream_error_code::invalid_array_size:
  33     ErrMsg += "The buffer size is not a multiple of the array element size.";
  34     break;
  35   case stream_error_code::invalid_offset:
  36     ErrMsg += "The specified offset is invalid for the current stream.";
  37     break;
  38   case stream_error_code::filesystem_error:
  39     ErrMsg += "An I/O error occurred on the file system.";
  40     break;
  41   }
  42
  43   if (!Context.empty()) {
  44     ErrMsg += "  ";
  45     ErrMsg += Context;
  46   }
  47 }
  48
  49 void BinaryStreamError::log(raw_ostream &OS) const { OS << ErrMsg; }
  50
  51 StringRef BinaryStreamError::getErrorMessage() const { return ErrMsg; }
  52
  53 std::error_code BinaryStreamError::convertToErrorCode() const {
  54   return inconvertibleErrorCode();
  55 }