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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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 // Class SetTransition
40 /**
41  * TODO add class description
42  */
43 class SetTransition : Transition
44 {
45 
46     public IntervalSet set;
47 
48     public this(ATNState target, IntervalSet set)
49     {
50         super(target);
51         if ( set is null ) set = IntervalSet.of(TokenConstantDefinition.INVALID_TYPE);
52         this.set = set;
53     }
54 
55     /**
56      * @uml
57      * @override
58      */
59     public override int getSerializationType()
60     {
61         return TransitionStates.SET;
62     }
63 
64     /**
65      * @uml
66      * @override
67      */
68     public override IntervalSet label()
69     {
70         return set;
71     }
72 
73     /**
74      * @uml
75      * @override
76      */
77     public override bool matches(int symbol, int minVocabSymbol, int maxVocabSymbol)
78     {
79         return set.contains(symbol);
80     }
81 
82     /**
83      * @uml
84      * @override
85      */
86     public override string toString()
87     {
88         return set.toString();
89     }
90 
91 }