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/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic Le Coq
* Copyright (C) 2013 Marko Zivkovic
*
* Contact Information: marko88zivkovic at gmail dot com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU 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 General
* Public License for more details. You should have received a copy of the
* GNU General Public License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*
* This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
* during his Bachelor thesis at the computer science department of ETH Zurich,
* in the year 2013 and/or during future work.
*
* It is a reengineered version of XLogo written by Loic Le Coq, published
* under the GPL License at http://xlogo.tuxfamily.org/
*
* Contents of this file were initially written by Loic Le Coq,
* modifications, extensions, refactorings might have been applied by Marko Zivkovic
*/
package xlogo.kernel.grammar;
import java.util.Vector;
public class LogoTree
{
private Vector<LogoTree> children;
private LogoTree parent;
private LogoType value;
private boolean isRoot = false;
private boolean isProcedure = false;
private boolean isPrimitive = false;
private boolean isLeaf = false;
LogoTree()
{
children = new Vector<LogoTree>();
}
protected void setParent(LogoTree lt)
{
this.parent = lt;
}
protected LogoTree getParent()
{
return parent;
}
protected boolean isRoot()
{
return isRoot;
}
protected void addChild(LogoTree child)
{
children.add(child);
}
protected void setValue(LogoType value)
{
this.value = value;
}
protected LogoType getValue()
{
return value;
}
protected boolean isLeaf()
{
return isLeaf;
}
LogoType evaluate()
{
Vector<LogoType> args = new Vector<LogoType>();
for (int i = 0; i < children.size(); i++)
{
LogoTree child = children.get(i);
if (child.isLeaf())
args.add(child.getValue());
else
args.add(child.evaluate());
}
return null;
}
}
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