1//===- Error.cpp - 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 defines a new error_category for the Object library.
10//
11//===----------------------------------------------------------------------===//
12
13#include "llvm/Object/Error.h"
14#include "llvm/ADT/Twine.h"
15#include "llvm/Support/ErrorHandling.h"
16
17using namespace llvm;
18using namespace object;
19
20namespace {
21// FIXME: This class is only here to support the transition to llvm::Error. It
22// will be removed once this transition is complete. Clients should prefer to
23// deal with the Error value directly, rather than converting to error_code.
24class _object_error_category : public std::error_category {
25public:
26 const char* name() const noexcept override;
27 std::string message(int ev) const override;
28};
29}
30
31const char *_object_error_category::name() const noexcept {
32 return "llvm.object";
33}
34
35std::string _object_error_category::message(int EV) const {
36 object_error E = static_cast<object_error>(EV);
37 switch (E) {
38 case object_error::arch_not_found:
39 return "No object file for requested architecture";
40 case object_error::invalid_file_type:
41 return "The file was not recognized as a valid object file";
42 case object_error::parse_failed:
43 return "Invalid data was encountered while parsing the file";
44 case object_error::unexpected_eof:
45 return "The end of the file was unexpectedly encountered";
46 case object_error::string_table_non_null_end:
47 return "String table must end with a null terminator";
48 case object_error::invalid_section_index:
49 return "Invalid section index";
50 case object_error::bitcode_section_not_found:
51 return "Bitcode section not found in object file";
52 case object_error::invalid_symbol_index:
53 return "Invalid symbol index";
54 case object_error::section_stripped:
55 return "Section has been stripped from the object file";
56 }
57 llvm_unreachable("An enumerator of object_error does not have a message "
58 "defined.");
59}
60
61void BinaryError::anchor() {}
62char BinaryError::ID = 0;
63char GenericBinaryError::ID = 0;
64
65GenericBinaryError::GenericBinaryError(const Twine &Msg) : Msg(Msg.str()) {}
66
67GenericBinaryError::GenericBinaryError(const Twine &Msg,
68 object_error ECOverride)
69 : Msg(Msg.str()) {
70 setErrorCode(make_error_code(e: ECOverride));
71}
72
73void GenericBinaryError::log(raw_ostream &OS) const {
74 OS << Msg;
75}
76
77const std::error_category &object::object_category() {
78 static _object_error_category error_category;
79 return error_category;
80}
81
82llvm::Error llvm::object::isNotObjectErrorInvalidFileType(llvm::Error Err) {
83 return handleErrors(E: std::move(Err), Hs: [](std::unique_ptr<ECError> M) -> Error {
84 // Try to handle 'M'. If successful, return a success value from
85 // the handler.
86 if (M->convertToErrorCode() == object_error::invalid_file_type)
87 return Error::success();
88
89 // We failed to handle 'M' - return it from the handler.
90 // This value will be passed back from catchErrors and
91 // wind up in Err2, where it will be returned from this function.
92 return Error(std::move(M));
93 });
94}
95