/interpreter/tags/at_build150307/src/edu/vub/at/objects/ATHandler.java
http://ambienttalk.googlecode.com/ · Java · 63 lines · 6 code · 4 blank · 53 comment · 0 complexity · 86b7bd45d320365b366414256439bf6e MD5 · raw file
- /**
- * AmbientTalk/2 Project
- * ATHandler.java created on Sep 26, 2006 at 7:56:45 PM
- * (c) Programming Technology Lab, 2006 - 2007
- * Authors: Tom Van Cutsem & Stijn Mostinckx
- *
- * Permission is hereby granted, free of charge, to any person
- * obtaining a copy of this software and associated documentation
- * files (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use,
- * copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following
- * conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
- * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- */
- package edu.vub.at.objects;
- import edu.vub.at.exceptions.InterpreterException;
- /**
- * Instances of the class ATHandler represent first-class exception handlers which
- * have a filter object, describing the kind of exceptions caught by the handler and
- * a code block which acts as replacement code for the code that raised the exception.
- *
- * @author smostinc
- */
- public interface ATHandler extends ATObject {
-
- /**
- * Used to determine whether a handler will be triggered when an exception is raised.
- * Its primary use is to provide a hook to deviate from the default semantics, which is:
- *
- * def canHandle(anException) {
- * (reflect: anException).isCloneOf(filter);
- * };
- *
- */
- public ATBoolean base_canHandle(ATObject anException) throws InterpreterException;
-
- /**
- * When a handler has answered that it can handle an exception, the following
- * method is invoked, asking the handler to handle the exception.
- * The default semantics is simply to invoke the associated handler closure.
- *
- * def handle(anException) {
- * handler(anException)
- * };
- *
- */
- public ATObject base_handle(ATObject anException) throws InterpreterException;
- }