| /* |
| * 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); |
| } |