81 lines
4.7 KiB
Java
81 lines
4.7 KiB
Java
/*
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* Copyright (c) 2003, 2011, 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 sun.reflect;
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import java.lang.reflect.*;
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/** Provides reflective access to the constant pools of classes.
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Currently this is needed to provide reflective access to annotations
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but may be used by other internal subsystems in the future. */
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public class ConstantPool {
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// Number of entries in this constant pool (= maximum valid constant pool index)
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public int getSize() { return getSize0 (constantPoolOop); }
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public Class<?> getClassAt (int index) { return getClassAt0 (constantPoolOop, index); }
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public Class<?> getClassAtIfLoaded (int index) { return getClassAtIfLoaded0 (constantPoolOop, index); }
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// Returns either a Method or Constructor.
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// Static initializers are returned as Method objects.
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public Member getMethodAt (int index) { return getMethodAt0 (constantPoolOop, index); }
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public Member getMethodAtIfLoaded(int index) { return getMethodAtIfLoaded0(constantPoolOop, index); }
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public Field getFieldAt (int index) { return getFieldAt0 (constantPoolOop, index); }
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public Field getFieldAtIfLoaded (int index) { return getFieldAtIfLoaded0 (constantPoolOop, index); }
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// Fetches the class name, member (field, method or interface
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// method) name, and type descriptor as an array of three Strings
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public String[] getMemberRefInfoAt (int index) { return getMemberRefInfoAt0 (constantPoolOop, index); }
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public int getIntAt (int index) { return getIntAt0 (constantPoolOop, index); }
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public long getLongAt (int index) { return getLongAt0 (constantPoolOop, index); }
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public float getFloatAt (int index) { return getFloatAt0 (constantPoolOop, index); }
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public double getDoubleAt (int index) { return getDoubleAt0 (constantPoolOop, index); }
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public String getStringAt (int index) { return getStringAt0 (constantPoolOop, index); }
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public String getUTF8At (int index) { return getUTF8At0 (constantPoolOop, index); }
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//---------------------------------------------------------------------------
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// Internals only below this point
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//
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static {
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Reflection.registerFieldsToFilter(ConstantPool.class, new String[] { "constantPoolOop" });
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}
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// HotSpot-internal constant pool object (set by the VM, name known to the VM)
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private Object constantPoolOop;
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private native int getSize0 (Object constantPoolOop);
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private native Class<?> getClassAt0 (Object constantPoolOop, int index);
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private native Class<?> getClassAtIfLoaded0 (Object constantPoolOop, int index);
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private native Member getMethodAt0 (Object constantPoolOop, int index);
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private native Member getMethodAtIfLoaded0(Object constantPoolOop, int index);
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private native Field getFieldAt0 (Object constantPoolOop, int index);
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private native Field getFieldAtIfLoaded0 (Object constantPoolOop, int index);
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private native String[] getMemberRefInfoAt0 (Object constantPoolOop, int index);
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private native int getIntAt0 (Object constantPoolOop, int index);
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private native long getLongAt0 (Object constantPoolOop, int index);
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private native float getFloatAt0 (Object constantPoolOop, int index);
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private native double getDoubleAt0 (Object constantPoolOop, int index);
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private native String getStringAt0 (Object constantPoolOop, int index);
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private native String getUTF8At0 (Object constantPoolOop, int index);
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}
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