org.antlr.v4.runtime.atn

Class ParseInfo

java.lang.Object

org.antlr.v4.runtime.atn.ParseInfo

public class ParseInfo
extends Object

This class provides access to specific and aggregate statistics gathered during profiling of a parser.

Since:

4.3

Field Summary

Fields

Modifier and Type	Field and Description
protected ProfilingATNSimulator	atnSimulator

Constructor Summary

Constructors

Constructor and Description
ParseInfo(ProfilingATNSimulator atnSimulator)

Method Summary

Methods

Modifier and Type	Method and Description
DecisionInfo[]	getDecisionInfo() Gets an array of DecisionInfo instances containing the profiling information gathered for each decision in the ATN.
int	getDFASize() Gets the total number of DFA states stored in the DFA cache for all decisions in the ATN.
int	getDFASize(int decision) Gets the total number of DFA states stored in the DFA cache for a particular decision.
List<Integer>	getLLDecisions() Gets the decision numbers for decisions that required one or more full-context predictions during parsing.
long	getTotalATNLookaheadOps() Gets the total number of ATN lookahead operations for SLL and LL prediction across all decisions made during parsing.
long	getTotalLLATNLookaheadOps() Gets the total number of ATN lookahead operations for LL prediction across all decisions made during parsing.
long	getTotalLLLookaheadOps() Gets the total number of LL lookahead operations across all decisions made during parsing.
long	getTotalSLLATNLookaheadOps() Gets the total number of ATN lookahead operations for SLL prediction across all decisions made during parsing.
long	getTotalSLLLookaheadOps() Gets the total number of SLL lookahead operations across all decisions made during parsing.
long	getTotalTimeInPrediction() Gets the total time spent during prediction across all decisions made during parsing.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

atnSimulator

protected final ProfilingATNSimulator atnSimulator

Constructor Detail

ParseInfo

public ParseInfo(ProfilingATNSimulator atnSimulator)

Method Detail

getDecisionInfo

public DecisionInfo[] getDecisionInfo()

Gets an array of DecisionInfo instances containing the profiling information gathered for each decision in the ATN.

Returns:

An array of DecisionInfo instances, indexed by decision number.

getLLDecisions

public List<Integer> getLLDecisions()

Gets the decision numbers for decisions that required one or more full-context predictions during parsing. These are decisions for which DecisionInfo.LL_Fallback is non-zero.

Returns:

A list of decision numbers which required one or more full-context predictions during parsing.

getTotalTimeInPrediction

public long getTotalTimeInPrediction()

Gets the total time spent during prediction across all decisions made during parsing. This value is the sum of DecisionInfo.timeInPrediction for all decisions.

getTotalSLLLookaheadOps

public long getTotalSLLLookaheadOps()

Gets the total number of SLL lookahead operations across all decisions made during parsing. This value is the sum of DecisionInfo.SLL_TotalLook for all decisions.

getTotalLLLookaheadOps

public long getTotalLLLookaheadOps()

Gets the total number of LL lookahead operations across all decisions made during parsing. This value is the sum of DecisionInfo.LL_TotalLook for all decisions.

getTotalSLLATNLookaheadOps

public long getTotalSLLATNLookaheadOps()

Gets the total number of ATN lookahead operations for SLL prediction across all decisions made during parsing.

getTotalLLATNLookaheadOps

public long getTotalLLATNLookaheadOps()

Gets the total number of ATN lookahead operations for LL prediction across all decisions made during parsing.

getTotalATNLookaheadOps

public long getTotalATNLookaheadOps()

Gets the total number of ATN lookahead operations for SLL and LL prediction across all decisions made during parsing.

This value is the sum of getTotalSLLATNLookaheadOps() and getTotalLLATNLookaheadOps().

getDFASize

public int getDFASize()

Gets the total number of DFA states stored in the DFA cache for all decisions in the ATN.

getDFASize

public int getDFASize(int decision)

Gets the total number of DFA states stored in the DFA cache for a particular decision.