/*

 * Copyright (c) 1999, 2012, 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_CIMETADATA_HPP

#define SHARE_VM_CI_CIMETADATA_HPP

#include "ci/ciBaseObject.hpp"

#include "ci/ciClassList.hpp"

#include "memory/allocation.hpp"

#include "runtime/handles.hpp"

#include "runtime/jniHandles.hpp"

// ciMetadata

//

// Compiler interface to metadata object in the VM, not Java object.

class ciMetadata: public ciBaseObject {

  CI_PACKAGE_ACCESS

  friend class ciEnv;

 protected:

  Metadata* _metadata;

  ciMetadata(): _metadata(NULL) {}

  ciMetadata(Metadata* o): _metadata(o) {}

  virtual bool is_classless() const         { return false; }

 public:

  bool is_loaded() const { return _metadata != NULL || is_classless(); }

  virtual bool is_metadata() const          { return true; }

  virtual bool is_type() const              { return false; }

  virtual bool is_cpcache() const           { return false; }

  virtual bool is_return_address() const    { return false; }

  virtual bool is_method() const            { return false; }

  virtual bool is_method_data() const       { return false; }

  virtual bool is_klass() const             { return false; }

  virtual bool is_instance_klass() const    { return false; }

  virtual bool is_array_klass() const       { return false; }

  virtual bool is_obj_array_klass() const   { return false; }

  virtual bool is_type_array_klass() const  { return false; }

  virtual void dump_replay_data(outputStream* st) { /* do nothing */ }

  ciMethod*                as_method() {

    assert(is_method(), "bad cast");

    return (ciMethod*)this;

  }

  ciMethodData*            as_method_data() {

    assert(is_method_data(), "bad cast");

    return (ciMethodData*)this;

  }

  ciSymbol*                as_symbol() {

    assert(is_symbol(), "bad cast");

    return (ciSymbol*)this;

  }

  ciType*                  as_type() {

    assert(is_type(), "bad cast");

    return (ciType*)this;

  }

  ciReturnAddress*         as_return_address() {

    assert(is_return_address(), "bad cast");

    return (ciReturnAddress*)this;

  }

  ciKlass*                 as_klass() {

    assert(is_klass(), "bad cast");

    return (ciKlass*)this;

  }

  ciInstanceKlass*         as_instance_klass() {

    assert(is_instance_klass(), "bad cast");

    return (ciInstanceKlass*)this;

  }

  ciArrayKlass*            as_array_klass() {

    assert(is_array_klass(), "bad cast");

    return (ciArrayKlass*)this;

  }

  ciObjArrayKlass*         as_obj_array_klass() {

    assert(is_obj_array_klass(), "bad cast");

    return (ciObjArrayKlass*)this;

  }

  ciTypeArrayKlass*        as_type_array_klass() {

    assert(is_type_array_klass(), "bad cast");

    return (ciTypeArrayKlass*)this;

  }

  Metadata* constant_encoding() { return _metadata; }

  bool equals(ciMetadata* obj) const { return (this == obj); }

  int hash() { return ident() * 31; } // ???

  void print(outputStream* st);

  virtual void print_impl(outputStream* st) {}

  virtual const char* type_string() { return "ciMetadata"; }

  void print()  { print(tty); }

  void print_metadata(outputStream* st = tty);

};

#endif // SHARE_VM_CI_CIMETADATA_HPP