/*

 * Copyright (c) 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_OOPS_ANNOTATIONS_HPP

#define SHARE_VM_OOPS_ANNOTATIONS_HPP

#include "oops/metadata.hpp"

#include "runtime/handles.hpp"

#include "utilities/array.hpp"

#include "utilities/exceptions.hpp"

#include "utilities/globalDefinitions.hpp"

class ClassLoaderData;

class outputStream;

typedef Array<u1> AnnotationArray;

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

// to this is InstanceKlass.

class Annotations: public MetaspaceObj {

  // 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;

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

  // Index is the idnum, which is initially the same as the methods array index.

  Array<AnnotationArray*>*     _methods_annotations;

  // Annotation objects (byte arrays) for methods' parameters, or null if no

  // such annotations.

  // Index is the idnum, which is initially the same as the methods array index.

  Array<AnnotationArray*>*     _methods_parameter_annotations;

  // Annotation objects (byte arrays) for methods' default values, or null if no

  // such annotations.

  // Index is the idnum, which is initially the same as the methods array index.

  Array<AnnotationArray*>*     _methods_default_annotations;

  // Constructor where some some values are known to not be null

  Annotations(Array<AnnotationArray*>* fa, Array<AnnotationArray*>* ma,

              Array<AnnotationArray*>* mpa, Array<AnnotationArray*>* mda) :

                 _class_annotations(NULL),

                 _fields_annotations(fa),

                 _methods_annotations(ma),

                 _methods_parameter_annotations(mpa),

                 _methods_default_annotations(mda) {}

 public:

  // Allocate instance of this class

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

  static Annotations* allocate(ClassLoaderData* loader_data,

                               Array<AnnotationArray*>* fa,

                               Array<AnnotationArray*>* ma,

                               Array<AnnotationArray*>* mpa,

                               Array<AnnotationArray*>* mda, TRAPS);

  void deallocate_contents(ClassLoaderData* loader_data);

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

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

  // Constructor to initialize to null

  Annotations() : _class_annotations(NULL), _fields_annotations(NULL),

                  _methods_annotations(NULL),

                  _methods_parameter_annotations(NULL),

                  _methods_default_annotations(NULL) {}

  AnnotationArray* class_annotations() const                       { return _class_annotations; }

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

  Array<AnnotationArray*>* methods_annotations() const             { return _methods_annotations; }

  Array<AnnotationArray*>* methods_parameter_annotations() const   { return _methods_parameter_annotations; }

  Array<AnnotationArray*>* methods_default_annotations() const     { return _methods_default_annotations; }

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

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

  void set_methods_annotations(Array<AnnotationArray*>* md)           { _methods_annotations = md; }

  void set_methods_parameter_annotations(Array<AnnotationArray*>* md) { _methods_parameter_annotations = md; }

  void set_methods_default_annotations(Array<AnnotationArray*>* md)   { _methods_default_annotations = md; }

  // Redefine classes support

  AnnotationArray* get_method_annotations_of(int idnum)

                                                { return get_method_annotations_from(idnum, _methods_annotations); }

  AnnotationArray* get_method_parameter_annotations_of(int idnum)

                                                { return get_method_annotations_from(idnum, _methods_parameter_annotations); }

  AnnotationArray* get_method_default_annotations_of(int idnum)

                                                { return get_method_annotations_from(idnum, _methods_default_annotations); }

  void set_method_annotations_of(instanceKlassHandle ik,

                                 int idnum, AnnotationArray* anno, TRAPS) {

    set_methods_annotations_of(ik, idnum, anno, &_methods_annotations, THREAD);

  }

  void set_method_parameter_annotations_of(instanceKlassHandle ik,

                                 int idnum, AnnotationArray* anno, TRAPS) {

    set_methods_annotations_of(ik, idnum, anno, &_methods_parameter_annotations, THREAD);

  }

  void set_method_default_annotations_of(instanceKlassHandle ik,

                                 int idnum, AnnotationArray* anno, TRAPS) {

    set_methods_annotations_of(ik, idnum, anno, &_methods_default_annotations, THREAD);

  }

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

  static typeArrayOop make_java_array(AnnotationArray* annotations, TRAPS);

  inline AnnotationArray* get_method_annotations_from(int idnum, Array<AnnotationArray*>* annos);

  void set_annotations(Array<AnnotationArray*>* md, Array<AnnotationArray*>** md_p)  { *md_p = md; }

 private:

  void set_methods_annotations_of(instanceKlassHandle ik,

                                  int idnum, AnnotationArray* anno,

                                  Array<AnnotationArray*>** md_p, TRAPS);

 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;

};

// For method with idnum get the method's Annotations

inline AnnotationArray* Annotations::get_method_annotations_from(int idnum, Array<AnnotationArray*>* annos) {

  if (annos == NULL || annos->length() <= idnum) {

    return NULL;

  }

  return annos->at(idnum);

}

#endif // SHARE_VM_OOPS_ANNOTATIONS_HPP