Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/include/llvm/Object/Error.h
Line
Count
Source (jump to first uncovered line)
1
//===- Error.h - system_error extensions for Object -------------*- 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
// This declares a new error_category for the Object library.
10
//
11
//===----------------------------------------------------------------------===//
12
13
#ifndef LLVM_OBJECT_ERROR_H
14
#define LLVM_OBJECT_ERROR_H
15
16
#include "llvm/ADT/Twine.h"
17
#include "llvm/Support/Error.h"
18
#include <system_error>
19
20
namespace llvm {
21
namespace object {
22
23
class Binary;
24
25
const std::error_category &object_category();
26
27
enum class object_error {
28
  // Error code 0 is absent. Use std::error_code() instead.
29
  arch_not_found = 1,
30
  invalid_file_type,
31
  parse_failed,
32
  unexpected_eof,
33
  string_table_non_null_end,
34
  invalid_section_index,
35
  bitcode_section_not_found,
36
  invalid_symbol_index,
37
};
38
39
15.9k
inline std::error_code make_error_code(object_error e) {
40
15.9k
  return std::error_code(static_cast<int>(e), object_category());
41
15.9k
}
42
43
/// Base class for all errors indicating malformed binary files.
44
///
45
/// Having a subclass for all malformed binary files allows archive-walking
46
/// code to skip malformed files without having to understand every possible
47
/// way that a binary file might be malformed.
48
///
49
/// Currently inherits from ECError for easy interoperability with
50
/// std::error_code, but this will be removed in the future.
51
class BinaryError : public ErrorInfo<BinaryError, ECError> {
52
  virtual void anchor();
53
public:
54
  static char ID;
55
825
  BinaryError() {
56
825
    // Default to parse_failed, can be overridden with setErrorCode.
57
825
    setErrorCode(make_error_code(object_error::parse_failed));
58
825
  }
59
};
60
61
/// Generic binary error.
62
///
63
/// For errors that don't require their own specific sub-error (most errors)
64
/// this class can be used to describe the error via a string message.
65
class GenericBinaryError : public ErrorInfo<GenericBinaryError, BinaryError> {
66
public:
67
  static char ID;
68
  GenericBinaryError(Twine Msg);
69
  GenericBinaryError(Twine Msg, object_error ECOverride);
70
0
  const std::string &getMessage() const { return Msg; }
71
  void log(raw_ostream &OS) const override;
72
private:
73
  std::string Msg;
74
};
75
76
/// isNotObjectErrorInvalidFileType() is used when looping through the children
77
/// of an archive after calling getAsBinary() on the child and it returns an
78
/// llvm::Error.  In the cases we want to loop through the children and ignore the
79
/// non-objects in the archive this is used to test the error to see if an
80
/// error() function needs to called on the llvm::Error.
81
Error isNotObjectErrorInvalidFileType(llvm::Error Err);
82
83
} // end namespace object.
84
85
} // end namespace llvm.
86
87
namespace std {
88
template <>
89
struct is_error_code_enum<llvm::object::object_error> : std::true_type {};
90
}
91
92
#endif