OptionParser.h

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//===-- OptionParser.h ------------------------------------------*- 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 LLDB_HOST_OPTIONPARSER_H
#define LLDB_HOST_OPTIONPARSER_H
 
#include <mutex>
#include <string>
 
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/ArrayRef.h"
 
struct option;
 
namespace lldb_private {
 
struct OptionDefinition;
 
struct Option {
  // The definition of the option that this refers to.
  const OptionDefinition *definition;
  // if not NULL, set *flag to val when option found
  int *flag;
  // if flag not NULL, value to set *flag to; else return value
  int val;
};
 
class OptionParser {
public:
  enum OptionArgument { eNoArgument = 0, eRequiredArgument, eOptionalArgument };
 
  static void Prepare(std::unique_lock<std::mutex> &lock);
 
  static void EnableError(bool error);
 
  /// Argv must be an argument vector "as passed to main", i.e. terminated with
  /// a nullptr.
  static int Parse(llvm::MutableArrayRef<char *> argv,
                   llvm::StringRef optstring, const Option *longopts,
                   int *longindex);
 
  static char *GetOptionArgument();
  static int GetOptionIndex();
  static int GetOptionErrorCause();
  static std::string GetShortOptionString(struct option *long_options);
};
}
 
#endif // LLDB_HOST_OPTIONPARSER_H