/*

 * Copyright (c) 2012, 2018, 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_OOPS_ANNOTATIONS_HPP

#define SHARE_VM_OOPS_ANNOTATIONS_HPP

#include "oops/array.hpp"

#include "oops/metadata.hpp"

#include "utilities/exceptions.hpp"

#include "utilities/globalDefinitions.hpp"

class ClassLoaderData;

class outputStream;

class KlassSizeStats;

typedef Array<u1> AnnotationArray;

// Class to hold the various types of annotations. The only metadata that points

// to this is InstanceKlass, or another Annotations instance if this is a

// a type_annotation instance.

class Annotations: public MetaspaceObj {

  // If you add a new field that points to any metaspace object, you

  // must add this field to Annotations::metaspace_pointers_do().

  // Annotations for this class, or null if none.

  AnnotationArray*             _class_annotations;

  // Annotation objects (byte arrays) for fields, or null if no annotations.

  // Indices correspond to entries (not indices) in fields array.

  Array<AnnotationArray*>*     _fields_annotations;

  // Type annotations for this class, or null if none.

  AnnotationArray*             _class_type_annotations;

  Array<AnnotationArray*>*     _fields_type_annotations;

 public:

  // Allocate instance of this class

  static Annotations* allocate(ClassLoaderData* loader_data, TRAPS);

  static void free_contents(ClassLoaderData* loader_data, Array<AnnotationArray*>* p);

  void deallocate_contents(ClassLoaderData* loader_data);

  DEBUG_ONLY(bool on_stack() { return false; })  // for template

  // Sizing (in words)

  static int size()    { return sizeof(Annotations) / wordSize; }

  // Annotations should be stored in the read-only region of CDS archive.

  static bool is_read_only_by_default() { return true; }

#if INCLUDE_SERVICES

  void collect_statistics(KlassSizeStats *sz) const;

#endif

  // Constructor to initialize to null

  Annotations() : _class_annotations(NULL),

                  _fields_annotations(NULL),

                  _class_type_annotations(NULL),

                  _fields_type_annotations(NULL) {}

  AnnotationArray* class_annotations() const                       { return _class_annotations; }

  Array<AnnotationArray*>* fields_annotations() const              { return _fields_annotations; }

  AnnotationArray* class_type_annotations() const                  { return _class_type_annotations; }

  Array<AnnotationArray*>* fields_type_annotations() const         { return _fields_type_annotations; }

  void set_class_annotations(AnnotationArray* md)                     { _class_annotations = md; }

  void set_fields_annotations(Array<AnnotationArray*>* md)            { _fields_annotations = md; }

  void set_class_type_annotations(AnnotationArray* cta)               { _class_type_annotations = cta; }

  void set_fields_type_annotations(Array<AnnotationArray*>* fta)      { _fields_type_annotations = fta; }

  // Turn metadata annotations into a Java heap object (oop)

  static typeArrayOop make_java_array(AnnotationArray* annotations, TRAPS);

  bool is_klass() const { return false; }

  void metaspace_pointers_do(MetaspaceClosure* it);

  MetaspaceObj::Type type() const { return AnnotationsType; }

 private:

  static julong count_bytes(Array<AnnotationArray*>* p);

 public:

  const char* internal_name() const { return "{constant pool}"; }

#ifndef PRODUCT

  void print_on(outputStream* st) const;

#endif

  void print_value_on(outputStream* st) const;

};

#endif // SHARE_VM_OOPS_ANNOTATIONS_HPP