/*!
 * 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 { ATNConfigSet } from './atn/ATNConfigSet';
import { BitSet } from './misc/BitSet';
import { DFA } from './dfa/DFA';
import { Parser } from './Parser';
import { ParserErrorListener } from './ParserErrorListener';
import { SimulatorState } from './atn/SimulatorState';
export declare class DiagnosticErrorListener implements ParserErrorListener {
    protected exactOnly: boolean;
    /**
     * Initializes a new instance of {@link DiagnosticErrorListener}, specifying
     * whether all ambiguities or only exact ambiguities are reported.
     *
     * @param exactOnly {@code true} to report only exact ambiguities, otherwise
     * {@code false} to report all ambiguities.  Defaults to true.
     */
    constructor(exactOnly?: boolean);
    reportAmbiguity(recognizer: Parser, dfa: DFA, startIndex: number, stopIndex: number, exact: boolean, ambigAlts: BitSet | undefined, configs: ATNConfigSet): void;
    reportAttemptingFullContext(recognizer: Parser, dfa: DFA, startIndex: number, stopIndex: number, conflictingAlts: BitSet | undefined, conflictState: SimulatorState): void;
    reportContextSensitivity(recognizer: Parser, dfa: DFA, startIndex: number, stopIndex: number, prediction: number, acceptState: SimulatorState): void;
    protected getDecisionDescription(recognizer: Parser, dfa: DFA): string;
    /**
     * Computes the set of conflicting or ambiguous alternatives from a
     * configuration set, if that information was not already provided by the
     * parser.
     *
     * @param reportedAlts The set of conflicting or ambiguous alternatives, as
     * reported by the parser.
     * @param configs The conflicting or ambiguous configuration set.
     * @return Returns {@code reportedAlts} if it is not {@code null}, otherwise
     * returns the set of alternatives represented in {@code configs}.
     */
    protected getConflictingAlts(reportedAlts: BitSet | undefined, configs: ATNConfigSet): BitSet;
}