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/interpreter/tags/at2dist110511/src/edu/vub/at/exceptions/XImportConflict.java

http://ambienttalk.googlecode.com/
Java | 70 lines | 20 code | 7 blank | 43 comment | 0 complexity | cda51b401116d2300ec7c7f1a55471e0 MD5 | raw file
 1/**
 2 * AmbientTalk/2 Project
 3 * XImportConflict.java created on 1-mrt-2007 at 14:21:56
 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;
29
30import edu.vub.at.eval.Evaluator;
31import edu.vub.at.objects.ATTypeTag;
32import edu.vub.at.objects.ATTable;
33import edu.vub.at.objects.coercion.NativeTypeTags;
34import edu.vub.at.objects.grammar.ATSymbol;
35import edu.vub.at.objects.natives.NATTable;
36
37/**
38 * An XImportConflict exception is raised when an import: native fails
39 * because the importing object already defines one or more methods or
40 * fields available in the imported object. The exception provides more
41 * information about which names caused conflicts.
42 *
43 * @author tvcutsem
44 */
45public class XImportConflict extends InterpreterException {
46
47	private final ATSymbol[] conflictingNames_;
48	
49	/**
50	 * Constructor documenting which duplicate slots were being imported. 
51	 * @param conflictingNames the names of the slots which were being imported but which already existed in the importing scope
52	 * @throws InterpreterException if the slot names cannot be printed (e.g. when using custom symbols which do not provide an adequate print meta-method).
53	 */
54	public XImportConflict(ATSymbol[] conflictingNames) throws InterpreterException {
55		super("Conflicting names during import: " + Evaluator.printElements(conflictingNames, "", ",", "").javaValue);
56		conflictingNames_ = conflictingNames;
57	}
58	
59	/**
60	 * @return the names of the slots which were being imported but which already existed in the importing scope
61	 */
62	public ATTable getConflictingNames() {
63		return NATTable.atValue(conflictingNames_);
64	}
65	
66	public ATTypeTag getType() {
67		return NativeTypeTags._IMPORTCONFLICT_;
68	}
69
70}