antlr4ts
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ANTLR 4 runtime for JavaScript written in Typescript
38 lines (37 loc) • 1.78 kB
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 tracking the lookahead
* depth required in order to make a prediction.
*
* @since 4.3
*/
export declare class LookaheadEventInfo extends DecisionEventInfo {
/** The alternative chosen by adaptivePredict(), not necessarily
* the outermost alt shown for a rule; left-recursive rules have
* user-level alts that differ from the rewritten rule with a (...) block
* and a (..)* loop.
*/
predictedAlt: number;
/**
* Constructs a new instance of the {@link LookaheadEventInfo} class with
* the specified detailed lookahead information.
*
* @param decision The decision number
* @param state The final simulator state containing the necessary
* information to determine the result of a prediction, or `undefined` if
* the final state is not available
* @param input The input token stream
* @param startIndex The start index for the current prediction
* @param stopIndex The index at which the prediction was finally made
* @param fullCtx `true` if the current lookahead is part of an LL
* prediction; otherwise, `false` if the current lookahead is part of
* an SLL prediction
*/
constructor(decision: number, state: SimulatorState | undefined, predictedAlt: number, input: TokenStream, startIndex: number, stopIndex: number, fullCtx: boolean);
}