SwitchStatement.java #1

/*
 * SwitchStatement.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 <code>SwitchStatement</code> class represents switch statement node
 * of parse tree.
 * <br>
 * The specification around <code>CaseGroupList</code> may be
 * modified in the later version of OpenJava.
 *
 * @see openjava.ptree.ParseTree
 * @see openjava.ptree.NonLeaf
 * @see openjava.ptree.Statement
 * @see openjava.ptree.CaseGroupList
 */
public class SwitchStatement extends NonLeaf
    implements Statement
{

    /**
     * Allocates a new object.
     *
     * @param  expr  the condition of this switch statement.
     * @param  cglist  the list of the group of case and statements.
     */
    public SwitchStatement( Expression expr, CaseGroupList cglist ) {
        super();
	if (cglist == null)  cglist = new CaseGroupList();
	set( (ParseTree) expr, cglist );
    }

    SwitchStatement() {
    }
  
    public void writeCode() {
        writeTab();  writeDebugL();

	out.print( "switch" );
	out.print( " (" );
	Expression expr = getExpression();
	expr.writeCode();
	out.print( ")" );
    
	out.println( " {" );

	CaseGroupList casegrouplist = getCaseGroupList();
	casegrouplist.writeCode();

	writeTab();  out.print( "}" );  writeDebugR();  out.println();
    }

    /**
     * Gets the expression of the condition to switch.
     *
     * @return  the expression of the condition.
     */
    public Expression getExpression() {
        return (Expression) elementAt( 0 );
    }

    /**
     * Sets the expression of the condition to switch.
     *
     * @param  expr  the expression of the condition to set.
     */
    public void setExpression( Expression expr ) {
        setElementAt( expr, 0 );
    }
  
    /**
     * Gets the case group list.
     *
     * @return  the case group list.
     */
    public CaseGroupList getCaseGroupList() {
        return (CaseGroupList) elementAt( 1 );
    }

    /**
     * Sets the case group list.
     *
     * @param  cglist  the case group list.
     */
    public void setCaseGroupList( CaseGroupList cglist ) {
        setElementAt( cglist, 1 );
    }

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

}