methodconstant.java

来自「已经移植好的java虚拟机」· Java 代码 · 共 59 行

/*
 *	MethodConstant.java	1.2	97/05/27 SMI
 *
 * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
 * THIS SOFTWARE OR ITS DERIVATIVES.
 * Use is subject to license terms.
 */

package components;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import vm.Const;

// This class represents a CONSTANT_Methodref

public
class MethodConstant extends FMIrefConstant {
    boolean	didLookup;
    MethodInfo	theMethod;

    MethodConstant( int t ){
	tag = t;
    }

    public MethodConstant( ClassConstant c, NameAndTypeConstant sig ){
	super( Const.CONSTANT_METHOD, c, sig );
    }

    public static ConstantObject
    read( int t, DataInput in ) throws IOException {
	FMIrefConstant mc = new MethodConstant( t );
	mc.read( in );
	return mc;
    }

    public MethodInfo find(){
	if ( ! didLookup ){
	    theMethod = (MethodInfo)super.find(true);
	    didLookup = true;
	}
	return theMethod;
    }

}