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Java > Open Source Codes > org > lsmp > djep > matrixJep > MatrixSpecialEvaluationI


1 /* @author rich
2  * Created on 26-Nov-2003
3  *
4  * This code is covered by a Creative Commons
5  * Attribution, Non Commercial, Share Alike license
6  * <a HREF="http://creativecommons.org/licenses/by-nc-sa/1.0">License</a>
7  */
8 package org.lsmp.djep.matrixJep;
9 import org.nfunk.jep.*;
10 import org.lsmp.djep.matrixJep.nodeTypes.*;
11 import org.lsmp.djep.vectorJep.values.*;
12
13 /**
14  * If a function requires a special form of evaluation it should
15  * implement this interface.
16  *
17  * @author Rich Morris
18  * Created on 26-Nov-2003
19  */
20 public interface MatrixSpecialEvaluationI {
21     /**
22      * Returns the result of evaluating this node and the tree below.
23      * This method has the responsability for evaluating the children of the node
24      * and it should generally call
25      * <pre>
26      * MatrixValueI res = (MatrixValueI) node.jjtGetChild(i).jjtAccept(visitor,null);
27      * </pre>
28      * for each child.
29      *
30      * @param node The top node.
31      * @param visitor The parser visitor
32      * @param jep The current MatrixJep instance.
33      * @return Value after evaluation.
34      * @throws ParseException
35      */
36     public MatrixValueI evaluate(MatrixNodeI node,MatrixEvaluator visitor,MatrixJep jep) throws ParseException;
37 }
38
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