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Diffstat (limited to 'contrib/llvm-project/llvm/lib/Object/Error.cpp')
-rw-r--r-- | contrib/llvm-project/llvm/lib/Object/Error.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Object/Error.cpp b/contrib/llvm-project/llvm/lib/Object/Error.cpp new file mode 100644 index 000000000000..010c5b42dac2 --- /dev/null +++ b/contrib/llvm-project/llvm/lib/Object/Error.cpp @@ -0,0 +1,92 @@ +//===- 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/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(Twine Msg) : Msg(Msg.str()) {} + +GenericBinaryError::GenericBinaryError(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)); + }); +} |