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The ANTLR 4 grammar compiler.
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/*
* Copyright (c) 2012 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD-3-Clause license that
* can be found in the LICENSE.txt file in the project root.
*/
package org.antlr.v4.automata;
import org.antlr.v4.runtime.atn.ATNState;
import org.antlr.v4.runtime.atn.Transition;
import org.antlr.v4.runtime.misc.NotNull;
import java.util.HashSet;
import java.util.Set;
/** A simple visitor that walks everywhere it can go starting from s,
* without going into an infinite cycle. Override and implement
* visitState() to provide functionality.
*/
public class ATNVisitor {
public void visit(@NotNull ATNState s) {
visit_(s, new HashSet());
}
public void visit_(@NotNull ATNState s, @NotNull Set visited) {
if ( !visited.add(s.stateNumber) ) return;
visited.add(s.stateNumber);
visitState(s);
int n = s.getNumberOfTransitions();
for (int i=0; i