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 /*

  * 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, or another Annotations instance if this is a

 // a type_annotation instance.

 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;

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

   Annotations*                 _type_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),

                  _type_annotations(NULL) {}

  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),

                   _type_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; }

   Annotations* type_annotations() const                            { return _type_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; }

   void set_type_annotations(Annotations* annos)                       { _type_annotations = annos; }

   // 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; }

   bool is_klass() const { return false; }

  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