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,
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.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 /**
42  * TODO add class description
43  */
44 class RangeTransition : Transition
45 {
46 
47     public int from;
48 
49     public int to;
50 
51     public this(ATNState target, int from, int to)
52     {
53         super(target);
54         this.from = from;
55         this.to = to;
56     }
57 
58     /**
59      * @uml
60      * @override
61      */
62     public override int getSerializationType()
63     {
64         return TransitionStates.RANGE;
65     }
66 
67     /**
68      * @uml
69      * @override
70      */
71     public override IntervalSet label()
72     {
73         return IntervalSet.of(from, to);
74     }
75 
76     /**
77      * @uml
78      * @override
79      */
80     public override bool matches(int symbol, int minVocabSymbol, int maxVocabSymbol)
81     {
82         return symbol >= from && symbol <= to;
83     }
84 
85     /**
86      * @uml
87      * @override
88      */
89     public override string toString()
90     {
91         return "'" ~ tostring(from) ~ "'..'" ~ tostring(to) ~ "'";
92     }
93 
94 }