/*
* [The "BSD license"]
* Copyright (c) 2014 Terence Parr
* Copyright (c) 2014 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,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.antlr.v4.runtime.atn;
import org.antlr.v4.runtime.ANTLRErrorListener;
import org.antlr.v4.runtime.TokenStream;
import org.antlr.v4.runtime.misc.NotNull;
/**
* This class represents profiling event information for a context sensitivity.
* Context sensitivities are decisions where a particular input resulted in an
* SLL conflict, but LL prediction produced a single unique alternative.
*
* <p>
* In some cases, the unique alternative identified by LL prediction is not
* equal to the minimum represented alternative in the conflicting SLL
* configuration set. Grammars and inputs which result in this scenario are
* unable to use {@link PredictionMode#SLL}, which in turn means they cannot use
* the two-stage parsing strategy to improve parsing performance for that
* input.</p>
*
* @see ParserATNSimulator#reportContextSensitivity
* @see ANTLRErrorListener#reportContextSensitivity
*
* @since 4.3
*/
public class ContextSensitivityInfo extends DecisionEventInfo {
/**
* Constructs a new instance of the {@link ContextSensitivityInfo} class
* with the specified detailed context sensitivity information.
*
* @param decision The decision number
* @param configs The final configuration set containing the unique
* alternative identified by full-context prediction
* @param input The input token stream
* @param startIndex The start index for the current prediction
* @param stopIndex The index at which the context sensitivity was
* identified during full-context prediction
*/
public ContextSensitivityInfo(int decision, @NotNull ATNConfigSet configs,
@NotNull TokenStream input, int startIndex, int stopIndex)
{
super(decision, configs, input, startIndex, stopIndex, true);
}
}