/*

 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_CI_CIINSTANCE_HPP

#define SHARE_VM_CI_CIINSTANCE_HPP

#include "ci/ciObject.hpp"

#include "oops/instanceOop.hpp"

// ciInstance

//

// This class represents an instanceOop in the HotSpot virtual

// machine.  This is an oop which corresponds to a non-array

// instance of java.lang.Object.

class ciInstance : public ciObject {

  CI_PACKAGE_ACCESS

protected:

  ciInstance(instanceHandle h_i) : ciObject(h_i) {

    assert(h_i()->is_instance(), "wrong type");

  }

  ciInstance(ciKlass* klass) : ciObject(klass) {}

  instanceOop get_instanceOop() { return (instanceOop)get_oop(); }

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

  void print_impl(outputStream* st);

public:

  // If this object is a java mirror, return the corresponding type.

  // Otherwise, return NULL.

  // (Remember that a java mirror is an instance of java.lang.Class.)

  ciType* java_mirror_type();

  // What kind of ciObject is this?

  bool is_instance()     { return true; }

  bool is_java_object()  { return true; }

  // Constant value of a field.

  ciConstant field_value(ciField* field);

  // Constant value of a field at the specified offset.

  ciConstant field_value_by_offset(int field_offset);

  ciKlass* java_lang_Class_klass();

};

#endif // SHARE_VM_CI_CIINSTANCE_HPP