antlr4ts/atn/ContextSensitivityInfo.d.ts

ANTLR 4 runtime for JavaScript written in Typescript

/*!
 * Copyright 2016 The ANTLR Project. All rights reserved.
 * Licensed under the BSD-3-Clause license. See LICENSE file in the project root for license information.
 */
import { DecisionEventInfo } from "./DecisionEventInfo";
import { SimulatorState } from "./SimulatorState";
import { TokenStream } from "../TokenStream";
/**
 * 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.
 *
 * 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 {@link PredictionMode#SLL}, which in turn means they cannot use
 * the two-stage parsing strategy to improve parsing performance for that
 * input.
 *
 * @see ParserATNSimulator#reportContextSensitivity
 * @see ParserErrorListener#reportContextSensitivity
 *
 * @since 4.3
 */
export declare class ContextSensitivityInfo extends DecisionEventInfo {
    /**
     * Constructs a new instance of the {@link ContextSensitivityInfo} class
     * with the specified detailed context sensitivity information.
     *
     * @param decision The decision number
     * @param state The final simulator state containing the unique
     * alternative identified by full-context prediction
     * @param input The input token stream
     * @param startIndex The start index for the current prediction
     * @param stopIndex The index at which the context sensitivity was
     * identified during full-context prediction
     */
    constructor(decision: number, state: SimulatorState, input: TokenStream, startIndex: number, stopIndex: number);
}