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/*
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* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.apidesign.javap;
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import java.io.*;
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/**
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* Strores field data informastion.
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*
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* @author Sucheta Dambalkar (Adopted code from jdis)
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*/
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public class FieldData implements RuntimeConstants {
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ClassData cls;
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int access;
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int name_index;
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int descriptor_index;
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int attributes_count;
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int value_cpx=0;
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boolean isSynthetic=false;
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boolean isDeprecated=false;
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Vector attrs;
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public FieldData(ClassData cls){
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this.cls=cls;
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}
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/**
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* Read and store field info.
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*/
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public void read(DataInputStream in) throws IOException {
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access = in.readUnsignedShort();
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name_index = in.readUnsignedShort();
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descriptor_index = in.readUnsignedShort();
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// Read the attributes
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int attributes_count = in.readUnsignedShort();
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attrs=new Vector(attributes_count);
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for (int i = 0; i < attributes_count; i++) {
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int attr_name_index=in.readUnsignedShort();
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if (cls.getTag(attr_name_index)!=CONSTANT_UTF8) continue;
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String attr_name=cls.getString(attr_name_index);
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if (attr_name.equals("ConstantValue")){
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if (in.readInt()!=2)
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throw new ClassFormatError("invalid ConstantValue attr length");
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value_cpx=in.readUnsignedShort();
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AttrData attr=new AttrData(cls);
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attr.read(attr_name_index);
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attrs.addElement(attr);
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} else if (attr_name.equals("Synthetic")){
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if (in.readInt()!=0)
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throw new ClassFormatError("invalid Synthetic attr length");
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isSynthetic=true;
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AttrData attr=new AttrData(cls);
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attr.read(attr_name_index);
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attrs.addElement(attr);
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} else if (attr_name.equals("Deprecated")){
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if (in.readInt()!=0)
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throw new ClassFormatError("invalid Synthetic attr length");
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isDeprecated = true;
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AttrData attr=new AttrData(cls);
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attr.read(attr_name_index);
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attrs.addElement(attr);
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} else {
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AttrData attr=new AttrData(cls);
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attr.read(attr_name_index, in);
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attrs.addElement(attr);
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}
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}
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} // end read
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public boolean isStatic() {
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return (access & ACC_STATIC) != 0;
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}
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/**
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* Returns access of a field.
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*/
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public String[] getAccess(){
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Vector v = new Vector();
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if ((access & ACC_PUBLIC) !=0) v.addElement("public");
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if ((access & ACC_PRIVATE) !=0) v.addElement("private");
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if ((access & ACC_PROTECTED) !=0) v.addElement("protected");
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if ((access & ACC_STATIC) !=0) v.addElement("static");
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if ((access & ACC_FINAL) !=0) v.addElement("final");
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if ((access & ACC_VOLATILE) !=0) v.addElement("volatile");
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if ((access & ACC_TRANSIENT) !=0) v.addElement("transient");
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String[] accflags = new String[v.size()];
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v.copyInto(accflags);
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return accflags;
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}
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/**
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* Returns name of a field.
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*/
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public String getName(){
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return cls.getStringValue(name_index);
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}
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/**
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* Returns internal signature of a field
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*/
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public String getInternalSig(){
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return cls.getStringValue(descriptor_index);
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}
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/**
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* Returns true if field is synthetic.
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*/
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public boolean isSynthetic(){
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return isSynthetic;
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}
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/**
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* Returns true if field is deprecated.
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*/
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public boolean isDeprecated(){
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return isDeprecated;
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}
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/**
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* Returns index of constant value in cpool.
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*/
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public int getConstantValueIndex(){
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return (value_cpx);
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}
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/**
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* Returns list of attributes of field.
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*/
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public Vector getAttributes(){
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return attrs;
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}
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public byte[] findAnnotationData(boolean classRetention) {
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String n = classRetention ?
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"RuntimeInvisibleAnnotations" : // NOI18N
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"RuntimeVisibleAnnotations"; // NOI18N
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AttrData[] arr = new AttrData[attrs.size()];
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attrs.copyInto(arr);
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return ClassData.findAttr(n, arr);
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}
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}
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