antlr.v4.runtime.atn.SetTransition source code

1 /*
2  * [The "BSD license"]
3  *  Copyright (c) 2016 Terence Parr
4  *  Copyright (c) 2016 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,
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24  *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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28  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 module antlr.v4.runtime.atn.SetTransition;
32 
33 import antlr.v4.runtime.TokenConstantDefinition;
34 import antlr.v4.runtime.atn.ATNState;
35 import antlr.v4.runtime.misc.IntervalSet;
36 import antlr.v4.runtime.atn.Transition;
37 import antlr.v4.runtime.atn.TransitionStates;
38 
39 /**
40  * TODO add class description
41  */
42 class SetTransition : Transition
43 {
44 
45     public IntervalSet set;
46 
47     public this(ATNState target, IntervalSet set)
48     {
49         super(target);
50         if ( set is null ) set = IntervalSet.of(TokenConstantDefinition.INVALID_TYPE);
51         this.set = set;
52     }
53 
54     /**
55      * @uml
56      * @override
57      */
58     public override int getSerializationType()
59     {
60         return TransitionStates.SET;
61     }
62 
63     /**
64      * @uml
65      * @override
66      */
67     public override IntervalSet label()
68     {
69         return set;
70     }
71 
72     /**
73      * @uml
74      * @override
75      */
76     public override bool matches(int symbol, int minVocabSymbol, int maxVocabSymbol)
77     {
78         return set.contains(symbol);
79     }
80 
81     /**
82      * @uml
83      * @override
84      */
85     public override string toString()
86     {
87         return set.toString();
88     }
89 
90 }