/interpreter/tags/at2dist170907/src/edu/vub/at/objects/natives/grammar/AGDelegationCreation.java

 1/**
 2 * AmbientTalk/2 Project
 3 * AGDelegationCreation.java created on 29-jan-2007 at 16:22:25
 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.ATContext;
32import edu.vub.at.objects.ATMessage;
33import edu.vub.at.objects.ATObject;
34import edu.vub.at.objects.ATTable;
35import edu.vub.at.objects.grammar.ATExpression;
36import edu.vub.at.objects.grammar.ATSymbol;
37import edu.vub.at.objects.natives.NATDelegation;
38
39/**
40 * The native implementation of a first-class delegating message send.
41 *
42 * @author tvcutsem
43 */
44public final class AGDelegationCreation extends AGMessageCreation {
45	
46	public AGDelegationCreation(ATSymbol sel, ATTable args, ATExpression annotations) {
47		super(sel, args, annotations);
48	}
49	
50	public ATMessage createMessage(ATContext ctx, ATSymbol selector, ATTable evaluatedArgs, ATTable annotations) throws InterpreterException {
51		return new NATDelegation(ctx.base_self(), // the current 'self' is the delegator, to which 'self' should remain bound
52				                 selector,
53				                 evaluatedArgs,
54				                 annotations);
55	}
56
57	protected ATObject newQuoted(ATSymbol quotedSel, ATTable quotedArgs, ATExpression quotedAnnotations) {
58		return new AGDelegationCreation(quotedSel, quotedArgs, quotedAnnotations);
59	}
60	
61	protected String getMessageToken() { return "^"; }
62
63}