1 //===- MSFError.h - 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 #ifndef LLVM_DEBUGINFO_MSF_MSFERROR_H
10 #define LLVM_DEBUGINFO_MSF_MSFERROR_H
11 
12 #include "llvm/Support/Error.h"
13 
14 namespace llvm {
15 namespace msf {
16 enum class msf_error_code {
17   unspecified = 1,
18   insufficient_buffer,
19   not_writable,
20   no_stream,
21   invalid_format,
22   block_in_use,
23   size_overflow_4096,
24   size_overflow_8192,
25   size_overflow_16384,
26   size_overflow_32768,
27   stream_directory_overflow,
28 };
29 } // namespace msf
30 } // namespace llvm
31 
32 namespace std {
33 template <>
34 struct is_error_code_enum<llvm::msf::msf_error_code> : std::true_type {};
35 } // namespace std
36 
37 namespace llvm {
38 namespace msf {
39 const std::error_category &MSFErrCategory();
40 
41 inline std::error_code make_error_code(msf_error_code E) {
42   return std::error_code(static_cast<int>(E), MSFErrCategory());
43 }
44 
45 /// Base class for errors originating when parsing raw PDB files
46 class MSFError : public ErrorInfo<MSFError, StringError> {
47 public:
48   using ErrorInfo<MSFError, StringError>::ErrorInfo; // inherit constructors
49   MSFError(const Twine &S) : ErrorInfo(S, msf_error_code::unspecified) {}
50 
51   bool isPageOverflow() const {
52     switch (static_cast<msf_error_code>(convertToErrorCode().value())) {
53     case msf_error_code::unspecified:
54     case msf_error_code::insufficient_buffer:
55     case msf_error_code::not_writable:
56     case msf_error_code::no_stream:
57     case msf_error_code::invalid_format:
58     case msf_error_code::block_in_use:
59       return false;
60     case msf_error_code::size_overflow_4096:
61     case msf_error_code::size_overflow_8192:
62     case msf_error_code::size_overflow_16384:
63     case msf_error_code::size_overflow_32768:
64     case msf_error_code::stream_directory_overflow:
65       return true;
66     }
67     llvm_unreachable("msf error code not implemented");
68   }
69 
70   static char ID;
71 };
72 } // namespace msf
73 } // namespace llvm
74 
75 #endif // LLVM_DEBUGINFO_MSF_MSFERROR_H
76