/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/include/llvm/Object/Error.h
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1 | | //===- Error.h - system_error extensions for Object -------------*- 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 | | // This declares a new error_category for the Object library. |
11 | | // |
12 | | //===----------------------------------------------------------------------===// |
13 | | |
14 | | #ifndef LLVM_OBJECT_ERROR_H |
15 | | #define LLVM_OBJECT_ERROR_H |
16 | | |
17 | | #include "llvm/ADT/Twine.h" |
18 | | #include "llvm/Support/Error.h" |
19 | | #include <system_error> |
20 | | |
21 | | namespace llvm { |
22 | | namespace object { |
23 | | |
24 | | class Binary; |
25 | | |
26 | | const std::error_category &object_category(); |
27 | | |
28 | | enum class object_error { |
29 | | // Error code 0 is absent. Use std::error_code() instead. |
30 | | arch_not_found = 1, |
31 | | invalid_file_type, |
32 | | parse_failed, |
33 | | unexpected_eof, |
34 | | string_table_non_null_end, |
35 | | invalid_section_index, |
36 | | bitcode_section_not_found, |
37 | | invalid_symbol_index, |
38 | | }; |
39 | | |
40 | 7.82k | inline std::error_code make_error_code(object_error e) { |
41 | 7.82k | return std::error_code(static_cast<int>(e), object_category()); |
42 | 7.82k | } |
43 | | |
44 | | /// Base class for all errors indicating malformed binary files. |
45 | | /// |
46 | | /// Having a subclass for all malformed binary files allows archive-walking |
47 | | /// code to skip malformed files without having to understand every possible |
48 | | /// way that a binary file might be malformed. |
49 | | /// |
50 | | /// Currently inherits from ECError for easy interoperability with |
51 | | /// std::error_code, but this will be removed in the future. |
52 | | class BinaryError : public ErrorInfo<BinaryError, ECError> { |
53 | | public: |
54 | | static char ID; |
55 | 584 | BinaryError() { |
56 | 584 | // Default to parse_failed, can be overridden with setErrorCode. |
57 | 584 | setErrorCode(make_error_code(object_error::parse_failed)); |
58 | 584 | } |
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 |