/*

  * Copyright (c) 2002, 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.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * 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.

  */

 package org.apidesign.javap;

 import java.io.*;

 /**

  * Strores field data informastion.

  *

  * @author  Sucheta Dambalkar (Adopted code from jdis)

  */

 public class FieldData implements RuntimeConstants  {

     ClassData cls;

     int access;

     int name_index;

     int descriptor_index;

     int attributes_count;

     int value_cpx=0;

     boolean isSynthetic=false;

     boolean isDeprecated=false;

     Vector attrs;

     public FieldData(ClassData cls){

         this.cls=cls;

     }

     /**

      * Read and store field info.

      */

     public void read(DataInputStream in) throws IOException {

         access = in.readUnsignedShort();

         name_index = in.readUnsignedShort();

         descriptor_index = in.readUnsignedShort();

         // Read the attributes

         int attributes_count = in.readUnsignedShort();

         attrs=new Vector(attributes_count);

         for (int i = 0; i < attributes_count; i++) {

             int attr_name_index=in.readUnsignedShort();

             if (cls.getTag(attr_name_index)!=CONSTANT_UTF8) continue;

             String attr_name=cls.getString(attr_name_index);

             if (attr_name.equals("ConstantValue")){

                 if (in.readInt()!=2)

                     throw new ClassFormatError("invalid ConstantValue attr length");

                 value_cpx=in.readUnsignedShort();

                 AttrData attr=new AttrData(cls);

                 attr.read(attr_name_index);

                 attrs.addElement(attr);

             } else if (attr_name.equals("Synthetic")){

                 if (in.readInt()!=0)

                     throw new ClassFormatError("invalid Synthetic attr length");

                 isSynthetic=true;

                 AttrData attr=new AttrData(cls);

                 attr.read(attr_name_index);

                 attrs.addElement(attr);

             } else if (attr_name.equals("Deprecated")){

                 if (in.readInt()!=0)

                     throw new ClassFormatError("invalid Synthetic attr length");

                 isDeprecated = true;

                 AttrData attr=new AttrData(cls);

                 attr.read(attr_name_index);

                 attrs.addElement(attr);

             } else {

                 AttrData attr=new AttrData(cls);

                 attr.read(attr_name_index, in);

                 attrs.addElement(attr);

             }

         }

     }  // end read

     public boolean isStatic() {

         return (access & ACC_STATIC) != 0;

     }

     /**

      * Returns access of a field.

      */

     public String[] getAccess(){

         Vector v = new Vector();

         if ((access & ACC_PUBLIC)   !=0) v.addElement("public");

         if ((access & ACC_PRIVATE)   !=0) v.addElement("private");

         if ((access & ACC_PROTECTED)   !=0) v.addElement("protected");

         if ((access & ACC_STATIC)   !=0) v.addElement("static");

         if ((access & ACC_FINAL)    !=0) v.addElement("final");

         if ((access & ACC_VOLATILE) !=0) v.addElement("volatile");

         if ((access & ACC_TRANSIENT) !=0) v.addElement("transient");

         String[] accflags = new String[v.size()];

         v.copyInto(accflags);

         return accflags;

     }

     /**

      * Returns name of a field.

      */

     public String getName(){

         return cls.getStringValue(name_index);

     }

     /**

      * Returns internal signature of a field

      */

     public String getInternalSig(){

         return cls.getStringValue(descriptor_index);

     }

     /**

      * Returns true if field is synthetic.

      */

     public boolean isSynthetic(){

         return isSynthetic;

     }

     /**

      * Returns true if field is deprecated.

      */

     public boolean isDeprecated(){

         return isDeprecated;

     }

     /**

      * Returns index of constant value in cpool.

      */

     public int getConstantValueIndex(){

         return (value_cpx);

     }

     /**

      * Returns list of attributes of field.

      */

     public Vector getAttributes(){

         return attrs;

     }

     public byte[] findAnnotationData(boolean classRetention) {

         String n = classRetention ?

             "RuntimeInvisibleAnnotations" : // NOI18N

             "RuntimeVisibleAnnotations"; // NOI18N

         AttrData[] arr = new AttrData[attrs.size()];

         attrs.copyInto(arr);

         return ClassData.findAttr(n, arr);

     }

 }