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/* 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.
*/
#pragma once
#include "atn/DecisionEventInfo.h"
namespace antlr4 {
namespace atn {
/// <summary>
/// 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.
///
/// <para>
/// 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 <seealso cref="PredictionMode#SLL"/>, which in turn means they cannot use
/// the two-stage parsing strategy to improve parsing performance for that
/// input.</para>
/// </summary>
/// <seealso cref= ParserATNSimulator#reportContextSensitivity </seealso>
/// <seealso cref= ANTLRErrorListener#reportContextSensitivity
///
/// @since 4.3 </seealso>
class ANTLR4CPP_PUBLIC ContextSensitivityInfo : public DecisionEventInfo {
public:
/// <summary>
/// Constructs a new instance of the <seealso cref="ContextSensitivityInfo"/> class
/// with the specified detailed context sensitivity information.
/// </summary>
/// <param name="decision"> The decision number </param>
/// <param name="configs"> The final configuration set containing the unique
/// alternative identified by full-context prediction </param>
/// <param name="input"> The input token stream </param>
/// <param name="startIndex"> The start index for the current prediction </param>
/// <param name="stopIndex"> The index at which the context sensitivity was
/// identified during full-context prediction </param>
ContextSensitivityInfo(size_t decision, ATNConfigSet *configs, TokenStream *input, size_t startIndex, size_t stopIndex);
};
} // namespace atn
} // namespace antlr4
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