antlr.v4.runtime.tree.ErrorNodeImpl source code

1 /*
2  * [The "BSD license"]
3  *  Copyright (c) 2012 Terence Parr
4  *  Copyright (c) 2012 Sam Harwell
5  *  All rights reserved.
6  *
7  *  Redistribution and use in source and binary forms, with or without
8  *  modification, are permitted provided that the following conditions
9  *  are met:
10  *
11  *  1. Redistributions of source code must retain the above copyright
12  *     notice, this list of conditions and the following disclaimer.
13  *  2. Redistributions in binary form must reproduce the above copyright
14  *     notice, this list of conditions and the following disclaimer in the
15  *     documentation and/or other materials provided with the distribution.
16  *  3. The name of the author may not be used to endorse or promote products
17  *     derived from this software without specific prior written permission.
18  *
19  *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 module antlr.v4.runtime.tree.ErrorNodeImpl;
32 
33 import antlr.v4.runtime.tree.TerminalNodeImpl;
34 import antlr.v4.runtime.tree.ErrorNode;
35 import antlr.v4.runtime.Token;
36 
37 // Class ErrorNodeImpl
38 /**
39  * @uml
40  * Represents a token that was consumed during resynchronization
41  * rather than during a valid match operation. For example,
42  * we will create this kind of a node during single token insertion
43  * and deletion as well as during "consume until error recovery set"
44  * upon no viable alternative exceptions.
45  */
46 class ErrorNodeImpl : TerminalNodeImpl, ErrorNode
47 {
48 
49     public this(Token token)
50     {
51         super(token);
52     }
53 
54     /**
55      * @uml
56      * @override
57      */
58     public override V accept(V, U)(ParseTreeVisitor!U visitor)
59     {
60         return visitor.visitErrorNode(this);
61     }
62 
63 }