text: //===--- OptSpecifier.h - Option Specifiers ---------------------*- C++ -*-===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is distributed under the University of Illinois Open Source
  // License. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_OPTION_OPTSPECIFIER_H
  #define LLVM_OPTION_OPTSPECIFIER_H
  
  #include "llvm/Support/Compiler.h"
  
  namespace llvm {
  namespace opt {
    class Option;
  
    /// OptSpecifier - Wrapper class for abstracting references to option IDs.
    class OptSpecifier {
      unsigned ID;
  
    private:
      explicit OptSpecifier(bool) LLVM_DELETED_FUNCTION;
  
    public:
      OptSpecifier() : ID(0) {}
      /*implicit*/ OptSpecifier(unsigned _ID) : ID(_ID) {}
      /*implicit*/ OptSpecifier(const Option *Opt);
  
      bool isValid() const { return ID != 0; }
  
      unsigned getID() const { return ID; }
  
      bool operator==(OptSpecifier Opt) const { return ID == Opt.getID(); }
      bool operator!=(OptSpecifier Opt) const { return !(*this == Opt); }
    };
  }
  }
  
  #endif
  