llvm/tools/llvm-readobj/Error.h

//===- Error.h - system_error extensions for llvm-readobj -------*- 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 llvm-readobj tool.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_READOBJ_ERROR_H
#define LLVM_READOBJ_ERROR_H

#include "llvm/Support/system_error.h"

namespace llvm {

const error_category &readobj_category();

struct readobj_error {
  enum _ {
    success = 0,
    file_not_found,
    unsupported_file_format,
    unrecognized_file_format,
    unsupported_obj_file_format,
    unknown_symbol
  };
  _ v_;

  readobj_error(_ v) : v_(v) {}
  explicit readobj_error(int v) : v_(_(v)) {}
  operator int() const {return v_;}
};

inline error_code make_error_code(readobj_error e) {
  return error_code(static_cast<int>(e), readobj_category());
}

template <> struct is_error_code_enum<readobj_error> : true_type { };
template <> struct is_error_code_enum<readobj_error::_> : true_type { };

} // namespace llvm

#endif