95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
//===- Error.cpp - 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 defines a new error_category for the Object library.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/Error.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/ManagedStatic.h"
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using namespace llvm;
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using namespace object;
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namespace {
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// FIXME: This class is only here to support the transition to llvm::Error. It
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// will be removed once this transition is complete. Clients should prefer to
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// deal with the Error value directly, rather than converting to error_code.
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class _object_error_category : public std::error_category {
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public:
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const char* name() const noexcept override;
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std::string message(int ev) const override;
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};
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}
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const char *_object_error_category::name() const noexcept {
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return "llvm.object";
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}
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std::string _object_error_category::message(int EV) const {
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object_error E = static_cast<object_error>(EV);
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switch (E) {
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case object_error::arch_not_found:
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return "No object file for requested architecture";
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case object_error::invalid_file_type:
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return "The file was not recognized as a valid object file";
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case object_error::parse_failed:
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return "Invalid data was encountered while parsing the file";
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case object_error::unexpected_eof:
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return "The end of the file was unexpectedly encountered";
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case object_error::string_table_non_null_end:
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return "String table must end with a null terminator";
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case object_error::invalid_section_index:
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return "Invalid section index";
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case object_error::bitcode_section_not_found:
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return "Bitcode section not found in object file";
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case object_error::invalid_symbol_index:
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return "Invalid symbol index";
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}
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llvm_unreachable("An enumerator of object_error does not have a message "
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"defined.");
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}
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void BinaryError::anchor() {}
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char BinaryError::ID = 0;
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char GenericBinaryError::ID = 0;
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GenericBinaryError::GenericBinaryError(const Twine &Msg) : Msg(Msg.str()) {}
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GenericBinaryError::GenericBinaryError(const Twine &Msg,
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object_error ECOverride)
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: Msg(Msg.str()) {
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setErrorCode(make_error_code(ECOverride));
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}
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void GenericBinaryError::log(raw_ostream &OS) const {
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OS << Msg;
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}
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static ManagedStatic<_object_error_category> error_category;
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const std::error_category &object::object_category() {
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return *error_category;
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}
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llvm::Error llvm::object::isNotObjectErrorInvalidFileType(llvm::Error Err) {
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return handleErrors(std::move(Err), [](std::unique_ptr<ECError> M) -> Error {
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// Try to handle 'M'. If successful, return a success value from
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// the handler.
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if (M->convertToErrorCode() == object_error::invalid_file_type)
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return Error::success();
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// We failed to handle 'M' - return it from the handler.
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// This value will be passed back from catchErrors and
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// wind up in Err2, where it will be returned from this function.
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return Error(std::move(M));
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});
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}
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