antlr.v4.runtime.ProxyErrorListener source code

1 /*
2  * [The "BSD license"]
3  *  Copyright (c) 2012 Terence Parr
4  *  Copyright (c) 2012 Sam Harwell
5  *  Copyright (c) 2017 Egbert Voigt
6  *  All rights reserved.
7  *
8  *  Redistribution and use in source and binary forms, with or without
9  *  modification, are permitted provided that the following conditions
10  *  are met:
11  *
12  *  1. Redistributions of source code must retain the above copyright
13  *     notice, this list of conditions and the following disclaimer.
14  *  2. Redistributions in binary form must reproduce the above copyright
15  *     notice, this list of conditions and the following disclaimer in the
16  *     documentation and/or other materials provided with the distribution.
17  *  3. The name of the author may not be used to endorse or promote products
18  *     derived from this software without specific prior written permission.
19  *
20  *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 module antlr.v4.runtime.ProxyErrorListener;
33 
34 import antlr.v4.runtime.ANTLRErrorListener;
35 import antlr.v4.runtime.InterfaceRecognizer;
36 import antlr.v4.runtime.RecognitionException;
37 import antlr.v4.runtime.Token;
38 import antlr.v4.runtime.InterfaceParser;
39 import antlr.v4.runtime.dfa.DFA;
40 import antlr.v4.runtime.atn.ATNConfigSet;
41 import antlr.v4.runtime.misc.BitSet;
42 
43 /**
44  * @uml
45  * This implementation of {@link ANTLRErrorListener} dispatches all calls to a
46  * collection of delegate listeners. This reduces the effort required to support multiple
47  * listeners.
48  */
49 class ProxyErrorListener(U, V) : ANTLRErrorListener!(U, V)
50 {
51 
52     public ANTLRErrorListener!(U,V)[] delegates;
53 
54     public this(ANTLRErrorListener!(U,V)[] delegates)
55     {
56 	if (delegates is null) {
57             assert(0, "Null pointer exception delegates");
58         }
59         this.delegates = delegates;
60     }
61 
62     public void syntaxError(InterfaceRecognizer recognizer, Object offendingSymbol, int line,
63         int charPositionInLine, string msg, RecognitionException e)
64     {
65 	foreach (listener; delegates) {
66             listener.syntaxError(recognizer, offendingSymbol, line, charPositionInLine, msg, e);
67         }
68     }
69 
70     public void reportAmbiguity(InterfaceParser recognizer, DFA dfa, size_t startIndex, size_t stopIndex, bool exact, BitSet ambigAlts,
71         ATNConfigSet configs)
72     {
73 	foreach (listener; delegates) {
74             listener.reportAmbiguity(recognizer, dfa, startIndex, stopIndex, exact, ambigAlts, configs);
75         }
76     }
77 
78     public void reportAttemptingFullContext(InterfaceParser recognizer, DFA dfa, size_t startIndex, size_t stopIndex,
79         BitSet conflictingAlts, ATNConfigSet configs)
80     {
81 	foreach (listener; delegates) {
82             listener.reportAttemptingFullContext(recognizer, dfa, startIndex, stopIndex, conflictingAlts, configs);
83         }
84     }
85 
86     public void reportContextSensitivity(InterfaceParser recognizer, DFA dfa, size_t startIndex, size_t stopIndex,
87         int prediction, ATNConfigSet configs)
88     {
89 	foreach (listener; delegates) {
90             listener.reportContextSensitivity(recognizer, dfa, startIndex, stopIndex, prediction, configs);
91         }
92     }
93 
94 }