/*
 * Copyright (c) 2012-2017 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.runtime.atn;

import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.Recognizer;
import org.antlr.v4.runtime.RuleContext;
import org.antlr.v4.runtime.TokenStream;

This class represents profiling event information for semantic predicate
evaluations which occur during prediction.
See Also:
evalSemanticContext.evalSemanticContext
Since:
4.3/**
 * This class represents profiling event information for semantic predicate
 * evaluations which occur during prediction.
 *
 * @see ParserATNSimulator#evalSemanticContext
 *
 * @since 4.3
 */
public class PredicateEvalInfo extends DecisionEventInfo {
	
The semantic context which was evaluated.
/**
	 * The semantic context which was evaluated.
	 */
	public final SemanticContext semctx;
	
The alternative number for the decision which is guarded by the semantic context semctx. Note that other ATN configurations may predict the same alternative which are guarded by other semantic contexts and/or SemanticContext.NONE. /**
	 * The alternative number for the decision which is guarded by the semantic
	 * context {@link #semctx}. Note that other ATN
	 * configurations may predict the same alternative which are guarded by
	 * other semantic contexts and/or {@link SemanticContext#NONE}.
	 */
	public final int predictedAlt;
	
The result of evaluating the semantic context semctx. /**
	 * The result of evaluating the semantic context {@link #semctx}.
	 */
	public final boolean evalResult;

	
Constructs a new instance of the PredicateEvalInfo class with the specified detailed predicate evaluation information. 
Params:
decision – The decision number
input – The input token stream
startIndex – The start index for the current prediction
stopIndex – The index at which the predicate evaluation was
triggered. Note that the input stream may be reset to other positions for
the actual evaluation of individual predicates.
semctx – The semantic context which was evaluated
evalResult – The results of evaluating the semantic context
predictedAlt – The alternative number for the decision which is guarded by the semantic context semctx. See predictedAlt for more information.
fullCtx – true if the semantic context was evaluated during LL prediction; otherwise, false if the semantic context was evaluated during SLL prediction
See Also:
ParserATNSimulator.evalSemanticContext(SemanticContext, ParserRuleContext, int, boolean)
SemanticContext.eval(Recognizer<?,?>, RuleContext)/**
	 * Constructs a new instance of the {@link PredicateEvalInfo} class with the
	 * specified detailed predicate evaluation information.
	 *
	 * @param decision The decision number
	 * @param input The input token stream
	 * @param startIndex The start index for the current prediction
	 * @param stopIndex The index at which the predicate evaluation was
	 * triggered. Note that the input stream may be reset to other positions for
	 * the actual evaluation of individual predicates.
	 * @param semctx The semantic context which was evaluated
	 * @param evalResult The results of evaluating the semantic context
	 * @param predictedAlt The alternative number for the decision which is
	 * guarded by the semantic context {@code semctx}. See {@link #predictedAlt}
	 * for more information.
	 * @param fullCtx {@code true} if the semantic context was
	 * evaluated during LL prediction; otherwise, {@code false} if the semantic
	 * context was evaluated during SLL prediction
	 *
	 * @see ParserATNSimulator#evalSemanticContext(SemanticContext, ParserRuleContext, int, boolean)
	 * @see SemanticContext#eval(Recognizer, RuleContext)
	 */
	public PredicateEvalInfo(int decision,
							 TokenStream input, int startIndex, int stopIndex,
							 SemanticContext semctx,
							 boolean evalResult,
							 int predictedAlt,
							 boolean fullCtx)
	{
		super(decision, new ATNConfigSet(), input, startIndex, stopIndex, fullCtx);
		this.semctx = semctx;
		this.evalResult = evalResult;
		this.predictedAlt = predictedAlt;
	}
}