antlr.v4.runtime.atn.RangeTransition 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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29  */
30 
31 module antlr.v4.runtime.atn.RangeTransition;
32 
33 import std.conv;
34 import antlr.v4.runtime.atn.Transition;
35 import antlr.v4.runtime.atn.TransitionStates;
36 import antlr.v4.runtime.atn.ATNState;
37 import antlr.v4.runtime.misc.IntervalSet;
38 
39 alias tostring = to!string;
40 
41 // Class RangeTransition
42 /**
43  * TODO add class description
44  */
45 class RangeTransition : Transition
46 {
47 
48     public int from;
49 
50     public int to;
51 
52     public this(ATNState target, int from, int to)
53     {
54         super(target);
55         this.from = from;
56         this.to = to;
57     }
58 
59     /**
60      * @uml
61      * @override
62      */
63     public override int getSerializationType()
64     {
65         return TransitionStates.RANGE;
66     }
67 
68     /**
69      * @uml
70      * @override
71      */
72     public override IntervalSet label()
73     {
74         return IntervalSet.of(from, to);
75     }
76 
77     /**
78      * @uml
79      * @override
80      */
81     public override bool matches(int symbol, int minVocabSymbol, int maxVocabSymbol)
82     {
83         return symbol >= from && symbol <= to;
84     }
85 
86     /**
87      * @uml
88      * @override
89      */
90     public override string toString()
91     {
92         return "'" ~ tostring(from) ~ "'..'" ~ tostring(to) ~ "'";
93     }
94 
95 }