/interpreter/tags/at2-build270707/src/edu/vub/at/exceptions/signals/Signal.java
Java | 45 lines | 3 code | 2 blank | 40 comment | 0 complexity | 6bfc80be04ad4abc055e87be78bdd454 MD5 | raw file
1/** 2 * AmbientTalk/2 Project 3 * Signal.java created on 31-okt-2006 at 12:29:13 4 * (c) Programming Technology Lab, 2006 - 2007 5 * Authors: Tom Van Cutsem & Stijn Mostinckx 6 * 7 * Permission is hereby granted, free of charge, to any person 8 * obtaining a copy of this software and associated documentation 9 * files (the "Software"), to deal in the Software without 10 * restriction, including without limitation the rights to use, 11 * copy, modify, merge, publish, distribute, sublicense, and/or 12 * sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following 14 * conditions: 15 * 16 * The above copyright notice and this permission notice shall be 17 * included in all copies or substantial portions of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 21 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 22 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 23 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 24 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 * OTHER DEALINGS IN THE SOFTWARE. 27 */ 28package edu.vub.at.exceptions.signals; 29 30/** 31 * @author tvcutsem 32 * 33 * Signal is the abstract superclass of all AT/2 interpreter Signals. 34 * 35 * Signals are exceptions which *cannot* be caught at the AmbientTalk base-level. 36 * They cannot even be caught at the meta-level, but are accessible to the implementation only. 37 * 38 * Signals pervade the AT/2 interpreter, which is why they are declared to be unchecked exceptions, 39 * i.e. they subclass RuntimeException. This signifies that these exceptions should always be 40 * caught by the lowest-level evaluation loops in the runtime, such that they cannot cause the 41 * interpreter to crash unexpectedly. 42 */ 43public abstract class Signal extends RuntimeException { 44 45}