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The ANTLR 4 grammar compiler.
/*
* 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.codegen.model;
import org.antlr.v4.codegen.OutputModelFactory;
import org.antlr.v4.runtime.atn.StarLoopEntryState;
import org.antlr.v4.runtime.misc.IntervalSet;
import org.antlr.v4.tool.ast.GrammarAST;
import java.util.List;
/** */
public class LL1StarBlockSingleAlt extends LL1Loop {
public LL1StarBlockSingleAlt(OutputModelFactory factory, GrammarAST starRoot, List alts) {
super(factory, starRoot, alts);
StarLoopEntryState star = (StarLoopEntryState)starRoot.atnState;
loopBackStateNumber = star.loopBackState.stateNumber;
this.decision = star.decision;
IntervalSet[] altLookSets = factory.getGrammar().decisionLOOK.get(decision);
assert altLookSets.length == 2;
IntervalSet enterLook = altLookSets[0];
@SuppressWarnings("unused")
IntervalSet exitLook = altLookSets[1];
loopExpr = addCodeForLoopLookaheadTempVar(enterLook);
}
}