/interpreter/tags/at2dist110511/src/edu/vub/at/objects/natives/grammar/AGDefinition.java

 1/**
 2 * AmbientTalk/2 Project
 3 * AGDefinition.java created on 29 jul 2008 at 14:42:21
 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.objects.natives.grammar;
29
30import edu.vub.at.exceptions.InterpreterException;
31import edu.vub.at.objects.grammar.ATDefinition;
32import edu.vub.at.objects.natives.NATText;
33import edu.vub.at.objects.natives.NativeATObject;
34
35import java.util.Set;
36
37/**
38 * Common superclass for all definitional statements in the abstract grammar tree.
39 * 
40 * @author tvcutsem
41 */
42public abstract class AGDefinition extends NATAbstractGrammar implements ATDefinition {
43
44	public boolean isDefinition() { return true; }
45	public ATDefinition asDefinition() { return this; }
46
47	/**
48	 * My subclasses have to provide their own implementation for this, they cannot
49	 * reuse the default implementation of {@link NativeATObject}
50	 */
51	public abstract Set impl_introducedVariables() throws InterpreterException;
52	
53}