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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 semantic predicate
/// evaluations which occur during prediction.
/// </summary>
/// <seealso cref= ParserATNSimulator#evalSemanticContext
///
/// @since 4.3 </seealso>
class ANTLR4CPP_PUBLIC PredicateEvalInfo : public DecisionEventInfo {
public:
/// The semantic context which was evaluated.
const Ref<SemanticContext> semctx;
/// <summary>
/// The alternative number for the decision which is guarded by the semantic
/// context <seealso cref="#semctx"/>. Note that other ATN
/// configurations may predict the same alternative which are guarded by
/// other semantic contexts and/or <seealso cref="SemanticContext#NONE"/>.
/// </summary>
const size_t predictedAlt;
/// The result of evaluating the semantic context <seealso cref="#semctx"/>.
const bool evalResult;
/// <summary>
/// Constructs a new instance of the <seealso cref="PredicateEvalInfo"/> class
/// with the specified detailed predicate evaluation information.
/// </summary>
/// <param name="decision"> The decision number </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 predicate
/// evaluation was triggered. Note that the input stream may be reset to other
/// positions for the actual evaluation of individual predicates. </param>
/// <param name="semctx"> The semantic context which was evaluated </param>
/// <param name="evalResult"> The results of evaluating the semantic context
/// </param> <param name="predictedAlt"> The alternative number for the
/// decision which is guarded by the semantic context {@code semctx}. See
/// <seealso cref="#predictedAlt"/> for more information. </param> <param
/// name="fullCtx"> {@code true} if the semantic context was evaluated during
/// LL prediction; otherwise, {@code false} if the semantic context was
/// evaluated during SLL prediction
/// </param>
/// <seealso cref= ParserATNSimulator#evalSemanticContext(SemanticContext,
/// ParserRuleContext, int, boolean) </seealso> <seealso cref=
/// SemanticContext#eval(Recognizer, RuleContext) </seealso>
PredicateEvalInfo(size_t decision, TokenStream* input, size_t startIndex,
size_t stopIndex, Ref<SemanticContext> const& semctx,
bool evalResult, size_t predictedAlt, bool fullCtx);
};
} // namespace atn
} // namespace antlr4
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