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//===- Error.cpp - system_error extensions for Object -----------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This defines a new error_category for the Object library.
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/Error.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ManagedStatic.h"
using namespace llvm;
using namespace object;
namespace {
// FIXME: This class is only here to support the transition to llvm::Error. It
// will be removed once this transition is complete. Clients should prefer to
// deal with the Error value directly, rather than converting to error_code.
class _object_error_category : public std::error_category {
public:
const char* name() const noexcept override;
std::string message(int ev) const override;
};
}
const char *_object_error_category::name() const noexcept {
return "llvm.object";
}
std::string _object_error_category::message(int EV) const {
object_error E = static_cast<object_error>(EV);
switch (E) {
case object_error::arch_not_found:
return "No object file for requested architecture";
case object_error::invalid_file_type:
return "The file was not recognized as a valid object file";
case object_error::parse_failed:
return "Invalid data was encountered while parsing the file";
case object_error::unexpected_eof:
return "The end of the file was unexpectedly encountered";
case object_error::string_table_non_null_end:
return "String table must end with a null terminator";
case object_error::invalid_section_index:
return "Invalid section index";
case object_error::bitcode_section_not_found:
return "Bitcode section not found in object file";
case object_error::invalid_symbol_index:
return "Invalid symbol index";
}
llvm_unreachable("An enumerator of object_error does not have a message "
"defined.");
}
void BinaryError::anchor() {}
char BinaryError::ID = 0;
char GenericBinaryError::ID = 0;
GenericBinaryError::GenericBinaryError(const Twine &Msg) : Msg(Msg.str()) {}
GenericBinaryError::GenericBinaryError(const Twine &Msg,
object_error ECOverride)
: Msg(Msg.str()) {
setErrorCode(make_error_code(ECOverride));
}
void GenericBinaryError::log(raw_ostream &OS) const {
OS << Msg;
}
static ManagedStatic<_object_error_category> error_category;
const std::error_category &object::object_category() {
return *error_category;
}
llvm::Error llvm::object::isNotObjectErrorInvalidFileType(llvm::Error Err) {
return handleErrors(std::move(Err), [](std::unique_ptr<ECError> M) -> Error {
// Try to handle 'M'. If successful, return a success value from
// the handler.
if (M->convertToErrorCode() == object_error::invalid_file_type)
return Error::success();
// We failed to handle 'M' - return it from the handler.
// This value will be passed back from catchErrors and
// wind up in Err2, where it will be returned from this function.
return Error(std::move(M));
});
}
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