package org.apache.bcel.generic;

import org.apache.bcel.ExceptionConstants;

/**
 * NEW - Create new object
 * <PRE>Stack: ... -&gt; ..., objectref</PRE>
 *
 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
 * @version $Id: NEW.java,v 1.2 2006/08/23 13:48:30 andos Exp $
 */
public class NEW extends CPInstruction
        implements LoadClass, AllocationInstruction, ExceptionThrower, StackProducer {
    /**
     *
     */
    private static final long serialVersionUID = 5773167897857305796L;

    /**
     * Empty constructor needed for the Class.newInstance() statement in
     * Instruction.readInstruction(). Not to be used otherwise.
     */
    NEW() {
    }

    public NEW(int index) {
        super(org.apache.bcel.Constants.NEW, index);
    }

    public Class[] getExceptions() {
        Class[] cs = new Class[2 + ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length];

        System.arraycopy(ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION, 0,
                cs, 0, ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length);

        cs[ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length + 1] = ExceptionConstants.INSTANTIATION_ERROR;
        cs[ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length] = ExceptionConstants.ILLEGAL_ACCESS_ERROR;

        return cs;
    }

    public ObjectType getLoadClassType(ConstantPoolGen cpg) {
        return (ObjectType) getType(cpg);
    }

    /**
     * Call corresponding visitor method(s). The order is:
     * Call visitor methods of implemented interfaces first, then
     * call methods according to the class hierarchy in descending order,
     * i.e., the most specific visitXXX() call comes last.
     *
     * @param v Visitor object
     */
    public void accept(Visitor v) {
        v.visitLoadClass(this);
        v.visitAllocationInstruction(this);
        v.visitExceptionThrower(this);
        v.visitStackProducer(this);
        v.visitTypedInstruction(this);
        v.visitCPInstruction(this);
        v.visitNEW(this);
    }
}
