/*
* Copyright (c) 2003, 2011, 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.
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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);
}