ciNullObject.hpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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#ifndef SHARE_VM_CI_CINULLOBJECT_HPP
#define SHARE_VM_CI_CINULLOBJECT_HPP

#include "ci/ciClassList.hpp"
#include "ci/ciObject.hpp"
#include "ci/ciUtilities.hpp"

// ciNullObject
//
// This class represents a null reference in the VM.
class ciNullObject : public ciObject {
  CI_PACKAGE_ACCESS

private:
  ciNullObject() : ciObject() {}

  const char* type_string() { return "ciNullObject"; }

  void print_impl(outputStream* st);

public:
  // Is this ciObject a Java Language Object?  That is,
  // is the ciObject an instance or an array
  bool is_java_object() { return true; }

  // What kind of ciObject is this?
  bool is_null_object() const { return true; }
  bool is_classless() const   { return true; }

  // Get the distinguished instance of this klass.
  static ciNullObject* make();
};

#endif // SHARE_VM_CI_CINULLOBJECT_HPP