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Java > Open Source Codes > jfun > parsec > trace > Trace


1 package jfun.parsec.trace;
2 /**
3  * This interface is used to trace parser result.
4  * <p>
5  * @author Ben Yu
6  * @since version 1.1
7  * May 9, 2006 7:18:31 PM
8  */
9 public interface Trace<T> {
10   /**
11    * This method is called when parser failed.
12    * @param except the pseudo exception object. null if no exception.
13    * @param src the text being parsed.
14    * @param index the index where the parser terminates.
15    * @param steps the logical steps consumed.
16    * @param offset the physical offset consumed.
17    */
18   public void onError(Object JavaDoc except, CharSequence JavaDoc src, int index, int steps, int offset);
19   
20   /**
21    * This method is called when parser succeeded.
22    * @param result the parser result.
23    * @param src the text being parsed.
24    * @param index the index where the parser terminates.
25    * @param steps the logical steps consumed.
26    * @param offset the physical offset consumed.
27    */
28   public void onSuccess(T result, CharSequence JavaDoc src, int index, int steps, int offset);
29 }
30
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