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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
//===- Error.h - system_error extensions for Object -------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This declares a new error_category for the Object library.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJECT_ERROR_H
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#define LLVM_OBJECT_ERROR_H
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/Error.h"
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#include <system_error>
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namespace llvm {
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namespace object {
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class Binary;
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const std::error_category &object_category();
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enum class object_error {
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// Error code 0 is absent. Use std::error_code() instead.
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arch_not_found = 1,
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invalid_file_type,
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parse_failed,
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unexpected_eof,
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string_table_non_null_end,
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invalid_section_index,
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bitcode_section_not_found,
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invalid_symbol_index,
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};
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inline std::error_code make_error_code(object_error e) {
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return std::error_code(static_cast<int>(e), object_category());
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}
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/// Base class for all errors indicating malformed binary files.
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///
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/// Having a subclass for all malformed binary files allows archive-walking
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/// code to skip malformed files without having to understand every possible
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/// way that a binary file might be malformed.
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///
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/// Currently inherits from ECError for easy interoperability with
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/// std::error_code, but this will be removed in the future.
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class BinaryError : public ErrorInfo<BinaryError, ECError> {
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virtual void anchor();
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public:
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static char ID;
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BinaryError() {
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// Default to parse_failed, can be overridden with setErrorCode.
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setErrorCode(make_error_code(object_error::parse_failed));
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}
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};
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/// Generic binary error.
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///
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/// For errors that don't require their own specific sub-error (most errors)
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/// this class can be used to describe the error via a string message.
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class GenericBinaryError : public ErrorInfo<GenericBinaryError, BinaryError> {
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public:
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static char ID;
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GenericBinaryError(Twine Msg);
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GenericBinaryError(Twine Msg, object_error ECOverride);
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const std::string &getMessage() const { return Msg; }
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void log(raw_ostream &OS) const override;
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private:
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std::string Msg;
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};
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/// isNotObjectErrorInvalidFileType() is used when looping through the children
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/// of an archive after calling getAsBinary() on the child and it returns an
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/// llvm::Error. In the cases we want to loop through the children and ignore the
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/// non-objects in the archive this is used to test the error to see if an
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/// error() function needs to called on the llvm::Error.
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Error isNotObjectErrorInvalidFileType(llvm::Error Err);
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} // end namespace object.
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} // end namespace llvm.
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namespace std {
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template <>
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struct is_error_code_enum<llvm::object::object_error> : std::true_type {};
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}
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#endif
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