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1 //===- BinaryStreamError.cpp - Error extensions for streams -----*- 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/Support/BinaryStreamError.h"
11 #include "llvm/Support/ErrorHandling.h"
12 
13 using namespace llvm;
14 
15 char BinaryStreamError::ID = 0;
16 
BinaryStreamError(stream_error_code C)17 BinaryStreamError::BinaryStreamError(stream_error_code C)
18     : BinaryStreamError(C, "") {}
19 
BinaryStreamError(StringRef Context)20 BinaryStreamError::BinaryStreamError(StringRef Context)
21     : BinaryStreamError(stream_error_code::unspecified, Context) {}
22 
BinaryStreamError(stream_error_code C,StringRef Context)23 BinaryStreamError::BinaryStreamError(stream_error_code C, StringRef Context)
24     : Code(C) {
25   ErrMsg = "Stream Error: ";
26   switch (C) {
27   case stream_error_code::unspecified:
28     ErrMsg += "An unspecified error has occurred.";
29     break;
30   case stream_error_code::stream_too_short:
31     ErrMsg += "The stream is too short to perform the requested operation.";
32     break;
33   case stream_error_code::invalid_array_size:
34     ErrMsg += "The buffer size is not a multiple of the array element size.";
35     break;
36   case stream_error_code::invalid_offset:
37     ErrMsg += "The specified offset is invalid for the current stream.";
38     break;
39   case stream_error_code::filesystem_error:
40     ErrMsg += "An I/O error occurred on the file system.";
41     break;
42   }
43 
44   if (!Context.empty()) {
45     ErrMsg += "  ";
46     ErrMsg += Context;
47   }
48 }
49 
log(raw_ostream & OS) const50 void BinaryStreamError::log(raw_ostream &OS) const { OS << ErrMsg << "\n"; }
51 
getErrorMessage() const52 StringRef BinaryStreamError::getErrorMessage() const { return ErrMsg; }
53 
convertToErrorCode() const54 std::error_code BinaryStreamError::convertToErrorCode() const {
55   return inconvertibleErrorCode();
56 }
57