ConstructorInvocation.java #1

/*
 * ConstructorInvocation.java 1.0
 *
 * Jun 20, 1997 mich
 * Sep 29, 1997 bv
 * Oct 11, 1997 mich
 *
 * @see openjava.ptree.ParseTree
 * @version 1.0 last updated:  Oct 11, 1997
 * @author  Michiaki Tatsubori
 */
package openjava.ptree;


import openjava.ptree.util.*;
import openjava.mop.*;
import java.io.OutputStream;



/**
 * The ConstructorInvocation class presents expression statement node
 * of parse tree
 *
 * @see openjava.ptree.ParseTree
 * @see openjava.ptree.NonLeaf
 * @see openjava.ptree.Statement
 * @see openjava.ptree.ExpressionList
 */
public class ConstructorInvocation extends NonLeaf
{
    
    private boolean _isSelfInvocation = true;

    /**
     * Constructs a new constructor invocation.
     * i.e. <code>this(..)</code>
     *
     * @param exprs arguments for this constructor invocation
     */
    public ConstructorInvocation( ExpressionList exprs ) {
	super();
	this._isSelfInvocation = true;
	if (exprs == null)  exprs = new ExpressionList();
	set( exprs );
    }

    /**
     * Constructs a new constructor invocation.
     * i.e. <code>super(..)</code>
     *
     * @param exprs arguments for this constructor invocation
     * @param enclosing outerclass qualifier.
     */
    public ConstructorInvocation(
	ExpressionList		exprs,
	Expression		enclosing )
    {
	super();
	this._isSelfInvocation = false;
	if (exprs == null)  exprs = new ExpressionList();
	set( exprs, enclosing );
    }

    ConstructorInvocation() {
	super();
    }
  
    public void writeCode() {
	writeTab();  writeDebugL();

	if (isSelfInvocation()) {
	    out.print( "this" );
	} else {
	    Expression enclosing = getEnclosing();
	    if (enclosing != null) {
		enclosing.writeCode();
		out.print( " . " );
	    }
	    out.print( "super" );
	}
	ExpressionList exprs = getArguments();
	if (exprs != null && exprs.size() != 0) {
	    out.print( "( " );
	    exprs.writeCode();
	    out.print( " );" );
	} else {
	    out.print( "();" );
	}

	writeDebugR();  out.println();
    }

    /*********need modification for copy******/

    public boolean isSelfInvocation() {
	return _isSelfInvocation;
    }

    /**
     * Gets the expressions as arguments for this invocation.
     *
     * @return  the expressions.
     */
    public ExpressionList getArguments() {
	return (ExpressionList) elementAt( 0 );
    }

    public Expression getEnclosing() {
	return (Expression) elementAt( 1 );
    }

    public void accept( ParseTreeVisitor v ) throws ParseTreeException {
        v.visit( this );
    }

}