org.antlr.v4.runtime.atn.ActionTransition Maven / Gradle / Ivy
/*
* [The "BSD license"]
* Copyright (c) 2012 Terence Parr
* Copyright (c) 2012 Sam Harwell
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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package org.antlr.v4.runtime.atn;
import org.antlr.v4.runtime.misc.NotNull;
public final class ActionTransition extends Transition {
public final int ruleIndex;
public final int actionIndex;
public final boolean isCtxDependent; // e.g., $i ref in action
public ActionTransition(@NotNull ATNState target, int ruleIndex) {
this(target, ruleIndex, -1, false);
}
public ActionTransition(@NotNull ATNState target, int ruleIndex, int actionIndex, boolean isCtxDependent) {
super(target);
this.ruleIndex = ruleIndex;
this.actionIndex = actionIndex;
this.isCtxDependent = isCtxDependent;
}
@Override
public int getSerializationType() {
return ACTION;
}
@Override
public boolean isEpsilon() {
return true; // we are to be ignored by analysis 'cept for predicates
}
@Override
public boolean matches(int symbol, int minVocabSymbol, int maxVocabSymbol) {
return false;
}
@Override
public String toString() {
return "action_"+ruleIndex+":"+actionIndex;
}
}