commonMain.org.antlr.v4.kotlinruntime.atn.ParseInfo.kt Maven / Gradle / Ivy
/*
* 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.
*/
package org.antlr.v4.kotlinruntime.atn
/**
* This class provides access to specific and aggregate statistics gathered
* during profiling of a parser.
*
* @since 4.3
*/
class ParseInfo(protected val atnSimulator: ProfilingATNSimulator) {
/**
* Gets an array of [DecisionInfo] instances containing the profiling
* information gathered for each decision in the ATN.
*
* @return An array of [DecisionInfo] instances, indexed by decision
* number.
*/
val decisionInfo: Array
get() = atnSimulator.decisionInfo!!
/**
* 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.
*
* @return A list of decision numbers which required one or more
* full-context predictions during parsing.
*/
val llDecisions: List
get() {
val decisions = atnSimulator.decisionInfo
val LL = ArrayList()
for (i in decisions!!.indices) {
val fallBack = decisions[i]!!.LL_Fallback
if (fallBack > 0) LL.add(i)
}
return LL
}
/**
* Gets the total time spent during prediction across all decisions made
* during parsing. This value is the sum of
* [DecisionInfo.timeInPrediction] for all decisions.
*/
val totalTimeInPrediction: Long
get() {
val decisions = atnSimulator.decisionInfo
var t: Long = 0
for (i in decisions!!.indices) {
t += decisions[i]!!.timeInPrediction
}
return t
}
/**
* 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.
*/
val totalSLLLookaheadOps: Long
get() {
val decisions = atnSimulator.decisionInfo
var k: Long = 0
for (i in decisions!!.indices) {
k += decisions[i]!!.SLL_TotalLook
}
return k
}
/**
* 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.
*/
val totalLLLookaheadOps: Long
get() {
val decisions = atnSimulator.decisionInfo
var k: Long = 0
for (i in decisions!!.indices) {
k += decisions[i]!!.LL_TotalLook
}
return k
}
/**
* Gets the total number of ATN lookahead operations for SLL prediction
* across all decisions made during parsing.
*/
val totalSLLATNLookaheadOps: Long
get() {
val decisions = atnSimulator.decisionInfo
var k: Long = 0
for (i in decisions!!.indices) {
k += decisions[i]!!.SLL_ATNTransitions
}
return k
}
/**
* Gets the total number of ATN lookahead operations for LL prediction
* across all decisions made during parsing.
*/
val totalLLATNLookaheadOps: Long
get() {
val decisions = atnSimulator.decisionInfo
var k: Long = 0
for (i in decisions!!.indices) {
k += decisions[i]!!.LL_ATNTransitions
}
return k
}
/**
* 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].
*/
val totalATNLookaheadOps: Long
get() {
val decisions = atnSimulator.decisionInfo
var k: Long = 0
for (i in decisions!!.indices) {
k += decisions[i]!!.SLL_ATNTransitions
k += decisions[i]!!.LL_ATNTransitions
}
return k
}
// /**
// * Gets the total number of DFA states stored in the DFA cache for all
// * decisions in the ATN.
// */
// val dfaSize: Int
// get() {
// var n = 0
// val decisionToDFA = atnSimulator.decisionToDFA
// for (i in decisionToDFA.indices) {
// n += getDFASize(i)
// }
// return n
// }
//
// /**
// * Gets the total number of DFA states stored in the DFA cache for a
// * particular decision.
// */
// fun getDFASize(decision: Int): Int {
// val decisionToDFA = atnSimulator.decisionToDFA[decision]
// return decisionToDFA.states.size()
// }
}