antlr.v4.runtime.atn.ActionTransition source code

1 module antlr.v4.runtime.atn.ActionTransition;
2 
3 import std.conv;
4 import antlr.v4.runtime.atn.Transition;
5 import antlr.v4.runtime.atn.TransitionStates;
6 import antlr.v4.runtime.atn.ATNState;
7 
8 /**
9  * TODO add class description
10  */
11 class ActionTransition : Transition
12 {
13 
14     public int ruleIndex;
15 
16     public int actionIndex;
17 
18     /**
19      * @uml
20      * e.g., $i ref in action
21      */
22     public bool isCtxDependent;
23 
24     public this(ATNState target, int ruleIndex)
25     {
26         this(target, ruleIndex, -1, false);
27     }
28 
29     public this(ATNState target, int ruleIndex, int actionIndex, bool isCtxDependent)
30     {
31         super(target);
32         this.ruleIndex = ruleIndex;
33         this.actionIndex = actionIndex;
34         this.isCtxDependent = isCtxDependent;
35     }
36 
37     /**
38      * @uml
39      * @override
40      */
41     public override int getSerializationType()
42     {
43         return TransitionStates.ACTION;
44     }
45 
46     /**
47      * @uml
48      * @override
49      */
50     public override bool isEpsilon()
51     {
52         return true; // we are to be ignored by analysis 'cept for predicates
53     }
54 
55     /**
56      * @uml
57      * @override
58      */
59     public override bool matches(int symbol, int minVocabSymbol, int maxVocabSymbol)
60     {
61         return false;
62     }
63 
64     /**
65      * @uml
66      * @override
67      */
68     public override string toString()
69     {
70         return "action_" ~ to!string(ruleIndex) ~ ":" ~ to!string(actionIndex);
71     }
72 
73 }