/* This file was generated by SableCC (http://www.sablecc.org/). */
/*
* PrintWalker.java
*
* This file is part of Tritonus: http://www.tritonus.org/
*/
/*
* Copyright (c) 2002 by Matthias Pfisterer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
|<--- this code is formatted to fit into 80 columns --->|
*/
package org.tritonus.saol.compiler;
import org.tritonus.saol.sablecc.analysis.DepthFirstAdapter;
import org.tritonus.saol.sablecc.node.*;
/**
* Simple AST walker. This is simple Abstract Syntax Tree walker
* which will visit each of the nodes and print on standard output the
* name of particular node visited. This class can be very usefull while
* testing the tree structure for a given input. Check PrintTree class.
*@author Mariusz Nowostawski
*/
public class PrintWalker
extends DepthFirstAdapter
{
private static final int INDENT_STEP = 3;
private int indent = 0;
void indent()
{
String s = new String ("");
for (int i = 0; i < indent; i++)
{
s += " ";
}
System.out.print(s);
}
public void defaultIn(Node node)
{
indent();
System.out.print( "in ");
String str = getStrippedClassName(node);
System.out.println(str);
indent += INDENT_STEP;
}
public void defaultOut(Node node)
{
indent -= INDENT_STEP;
indent();
System.out.print( "out ");
String str = getStrippedClassName(node);
System.out.println(str);
}
public void defaultCase(Node node)
{
indent();
System.out.print( "case ");
String str = getStrippedClassName(node) + ": " + ((Token) node).getText();
System.out.println(str);
}
private static String getStrippedClassName(Node node)
{
String strClassName = node.getClass().getName();
return stripClassName(strClassName);
}
private static String stripClassName(String strClassName)
{
int nLastDotPosition = strClassName.lastIndexOf(".");
if (nLastDotPosition >= 0)
{
strClassName = strClassName.substring(nLastDotPosition + 1);
}
return strClassName;
}
}
/*** PrintWalker.java ***/