diff --git a/include/llvm/Object/Error.h b/include/llvm/Object/Error.h new file mode 100644 index 00000000000..08f458790fb --- /dev/null +++ b/include/llvm/Object/Error.h @@ -0,0 +1,49 @@ +//===- Error.h - system_error extensions for Object -------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This declares a new error_category for the Object library. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_OBJECT_ERROR_H +#define LLVM_OBJECT_ERROR_H + +#include "llvm/Support/system_error.h" + +namespace llvm { +namespace object { + +const error_category &object_category(); + +struct object_error { +enum _ { + success = 0, + invalid_file_type, + parse_failed +}; + _ v_; + + object_error(_ v) : v_(v) {} + explicit object_error(int v) : v_(_(v)) {} + operator int() const {return v_;} +}; + +} // end namespace object. + +template <> struct is_error_code_enum : true_type { }; + +template <> struct is_error_code_enum : true_type { }; + +inline error_code make_error_code(object::object_error e) { + return error_code(static_cast(e), object::object_category()); +} + +} // end namespace llvm. + +#endif diff --git a/lib/Object/CMakeLists.txt b/lib/Object/CMakeLists.txt index 703d385d2ba..e32940e2def 100644 --- a/lib/Object/CMakeLists.txt +++ b/lib/Object/CMakeLists.txt @@ -1,6 +1,7 @@ add_llvm_library(LLVMObject COFFObjectFile.cpp ELFObjectFile.cpp + Error.cpp MachOObject.cpp MachOObjectFile.cpp Object.cpp diff --git a/lib/Object/Error.cpp b/lib/Object/Error.cpp new file mode 100644 index 00000000000..40f97d48a1d --- /dev/null +++ b/lib/Object/Error.cpp @@ -0,0 +1,55 @@ +//===- Error.cpp - system_error extensions for Object -----------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This defines a new error_category for the Object library. +// +//===----------------------------------------------------------------------===// + +#include "llvm/Object/Error.h" +#include "llvm/Support/ErrorHandling.h" + +using namespace llvm; +using namespace object; + +namespace { +class _object_error_category : public _do_message { +public: + virtual const char* name() const; + virtual std::string message(int ev) const; + virtual error_condition default_error_condition(int ev) const; +}; +} + +const char *_object_error_category::name() const { + return "llvm.object"; +} + +std::string _object_error_category::message(int ev) const { + switch (ev) { + case object_error::success: return "Success"; + 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"; + default: + llvm_unreachable("An enumerator of object_error does not have a message " + "defined."); + } +} + +error_condition _object_error_category::default_error_condition(int ev) const { + if (ev == object_error::success) + return errc::success; + return errc::invalid_argument; +} + +const error_category &object::object_category() { + static _object_error_category o; + return o; +}