/* * Copyright (c) 2003, 2004, 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 sun.reflect; import java.lang.reflect.*; /** Provides reflective access to the constant pools of classes.    Currently this is needed to provide reflective access to annotations    but may be used by other internal subsystems in the future. */ public class ConstantPool {  // Number of entries in this constant pool (= maximum valid constant pool index)  public int      getSize()                      { return getSize0            (constantPoolOop);        }  public Class    getClassAt         (int index) { return getClassAt0         (constantPoolOop, index); }  public Class    getClassAtIfLoaded (int index) { return getClassAtIfLoaded0 (constantPoolOop, index); }  // Returns either a Method or Constructor.  // Static initializers are returned as Method objects.  public Member   getMethodAt        (int index) { return getMethodAt0        (constantPoolOop, index); }  public Member   getMethodAtIfLoaded(int index) { return getMethodAtIfLoaded0(constantPoolOop, index); }  public Field    getFieldAt         (int index) { return getFieldAt0         (constantPoolOop, index); }  public Field    getFieldAtIfLoaded (int index) { return getFieldAtIfLoaded0 (constantPoolOop, index); }  // Fetches the class name, member (field, method or interface  // method) name, and type descriptor as an array of three Strings  public String[] getMemberRefInfoAt (int index) { return getMemberRefInfoAt0 (constantPoolOop, index); }  public int      getIntAt           (int index) { return getIntAt0           (constantPoolOop, index); }  public long     getLongAt          (int index) { return getLongAt0          (constantPoolOop, index); }  public float    getFloatAt         (int index) { return getFloatAt0         (constantPoolOop, index); }  public double   getDoubleAt        (int index) { return getDoubleAt0        (constantPoolOop, index); }  public String   getStringAt        (int index) { return getStringAt0        (constantPoolOop, index); }  public String   getUTF8At          (int index) { return getUTF8At0          (constantPoolOop, index); }   //---------------------------------------------------------------------------  // Internals only below this point  //   static {      Reflection.registerFieldsToFilter(ConstantPool.class, new String[] { "constantPoolOop" });  }   // HotSpot-internal constant pool object (set by the VM, name known to the VM)  private Object constantPoolOop;   private native int      getSize0            (Object constantPoolOop);  private native Class    getClassAt0         (Object constantPoolOop, int index);  private native Class    getClassAtIfLoaded0 (Object constantPoolOop, int index);  private native Member   getMethodAt0        (Object constantPoolOop, int index);  private native Member   getMethodAtIfLoaded0(Object constantPoolOop, int index);  private native Field    getFieldAt0         (Object constantPoolOop, int index);  private native Field    getFieldAtIfLoaded0 (Object constantPoolOop, int index);  private native String[] getMemberRefInfoAt0 (Object constantPoolOop, int index);  private native int      getIntAt0           (Object constantPoolOop, int index);  private native long     getLongAt0          (Object constantPoolOop, int index);  private native float    getFloatAt0         (Object constantPoolOop, int index);  private native double   getDoubleAt0        (Object constantPoolOop, int index);  private native String   getStringAt0        (Object constantPoolOop, int index);  private native String   getUTF8At0          (Object constantPoolOop, int index);}