llvm/llvm/include/llvm/Option/Option.h

//===- Option.h - Abstract Driver Options -----------------------*- 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_OPTION_OPTION_H
#define LLVM_OPTION_OPTION_H

#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Option/OptSpecifier.h"
#include "llvm/Option/OptTable.h"
#include "llvm/Support/ErrorHandling.h"
#include <cassert>

namespace llvm {

class raw_ostream;

namespace opt {

class Arg;
class ArgList;

/// ArgStringList - Type used for constructing argv lists for subprocesses.
ArgStringList;

/// Base flags for all options. Custom flags may be added after.
enum DriverFlag { … };

enum DriverVisibility { … };

/// Option - Abstract representation for a single form of driver
/// argument.
///
/// An Option class represents a form of option that the driver
/// takes, for example how many arguments the option has and how
/// they can be provided. Individual option instances store
/// additional information about what group the option is a member
/// of (if any), if the option is an alias, and a number of
/// flags. At runtime the driver parses the command line into
/// concrete Arg instances, each of which corresponds to a
/// particular Option instance.
class Option { … };

} // end namespace opt

} // end namespace llvm

#endif // LLVM_OPTION_OPTION_H