constantpoolsymbol.java

JPC: x86 PC Hardware Emulator. 牛津大学开发的一个纯JAVA的x86系统结构硬件模拟器。

/*
    JPC: A x86 PC Hardware Emulator for a pure Java Virtual Machine
    Release Version 2.0

    A project from the Physics Dept, The University of Oxford

    Copyright (C) 2007 Isis Innovation Limited

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 2 as published by
    the Free Software Foundation.

    This program 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 for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
    Details (including contact information) can be found at: 

    www.physics.ox.ac.uk/jpc
*/

package org.jpc.emulator.memory.codeblock.fastcompiler;

import java.lang.reflect.*;

public class ConstantPoolSymbol
{
    private Object poolEntity;

    public ConstantPoolSymbol(Object o)
    {
        boolean ok = (o instanceof Class)
	    || (o instanceof Method)
	    || (o instanceof Field)
	    || (o instanceof String)
	    || (o instanceof Integer)
            || (o instanceof Float)
	    || (o instanceof Long)
	    || (o instanceof Double);

        if (!ok) throw new IllegalArgumentException();

        poolEntity = o;
    }

    public Object poolEntity()
    {
        return poolEntity;
    }

    public String toString()
    {
        return "ConstantPoolSymbol["+poolEntity+"]";
    }
}