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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/DecisionInfo.h"
namespace antlr4 {
namespace atn {
class ProfilingATNSimulator;
/// This class provides access to specific and aggregate statistics gathered
/// during profiling of a parser.
class ANTLR4CPP_PUBLIC ParseInfo {
public:
ParseInfo(ProfilingATNSimulator *atnSimulator);
ParseInfo(ParseInfo const&) = default;
virtual ~ParseInfo();
ParseInfo& operator=(ParseInfo const&) = default;
/// <summary>
/// Gets an array of <seealso cref="DecisionInfo"/> instances containing the profiling
/// information gathered for each decision in the ATN.
/// </summary>
/// <returns> An array of <seealso cref="DecisionInfo"/> instances, indexed by decision
/// number. </returns>
virtual std::vector<DecisionInfo> getDecisionInfo();
/// <summary>
/// Gets the decision numbers for decisions that required one or more
/// full-context predictions during parsing. These are decisions for which
/// <seealso cref="DecisionInfo#LL_Fallback"/> is non-zero.
/// </summary>
/// <returns> A list of decision numbers which required one or more
/// full-context predictions during parsing. </returns>
virtual std::vector<size_t> getLLDecisions();
/// <summary>
/// Gets the total time spent during prediction across all decisions made
/// during parsing. This value is the sum of
/// <seealso cref="DecisionInfo#timeInPrediction"/> for all decisions.
/// </summary>
virtual long long getTotalTimeInPrediction();
/// <summary>
/// Gets the total number of SLL lookahead operations across all decisions
/// made during parsing. This value is the sum of
/// <seealso cref="DecisionInfo#SLL_TotalLook"/> for all decisions.
/// </summary>
virtual long long getTotalSLLLookaheadOps();
/// <summary>
/// Gets the total number of LL lookahead operations across all decisions
/// made during parsing. This value is the sum of
/// <seealso cref="DecisionInfo#LL_TotalLook"/> for all decisions.
/// </summary>
virtual long long getTotalLLLookaheadOps();
/// <summary>
/// Gets the total number of ATN lookahead operations for SLL prediction
/// across all decisions made during parsing.
/// </summary>
virtual long long getTotalSLLATNLookaheadOps();
/// <summary>
/// Gets the total number of ATN lookahead operations for LL prediction
/// across all decisions made during parsing.
/// </summary>
virtual long long getTotalLLATNLookaheadOps();
/// <summary>
/// Gets the total number of ATN lookahead operations for SLL and LL
/// prediction across all decisions made during parsing.
///
/// <para>
/// This value is the sum of <seealso cref="#getTotalSLLATNLookaheadOps"/> and
/// <seealso cref="#getTotalLLATNLookaheadOps"/>.</para>
/// </summary>
virtual long long getTotalATNLookaheadOps();
/// <summary>
/// Gets the total number of DFA states stored in the DFA cache for all
/// decisions in the ATN.
/// </summary>
virtual size_t getDFASize();
/// <summary>
/// Gets the total number of DFA states stored in the DFA cache for a
/// particular decision.
/// </summary>
virtual size_t getDFASize(size_t decision);
protected:
const ProfilingATNSimulator *_atnSimulator; // non-owning, we are created by this simulator.
};
} // namespace atn
} // namespace antlr4
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