export declare class Vocabulary {
    static readonly EMPTY_NAMES: string[];
    /**
     * Gets an empty {@link Vocabulary} instance.
     *
     *
     * No literal or symbol names are assigned to token types, so
     * {@link #getDisplayName(int)} returns the numeric value for all tokens
     * except {@link Token#EOF}.
     */
    static readonly EMPTY_VOCABULARY: Vocabulary;
    readonly maxTokenType: number;
    private readonly literalNames;
    private readonly symbolicNames;
    private readonly displayNames;
    /**
     * Constructs a new instance of {@link Vocabulary} from the specified
     * literal, symbolic, and display token names.
     *
     * @param literalNames The literal names assigned to tokens, or `null`
     * if no literal names are assigned.
     * @param symbolicNames The symbolic names assigned to tokens, or
     * `null` if no symbolic names are assigned.
     * @param displayNames The display names assigned to tokens, or `null`
     * to use the values in `literalNames` and `symbolicNames` as
     * the source of display names, as described in
     * {@link #getDisplayName(int)}.
     */
    constructor(literalNames: Array<string | null>, symbolicNames: Array<string | null>, displayNames?: Array<string | null> | null);
    /**
     * Returns a {@link Vocabulary} instance from the specified set of token
     * names. This method acts as a compatibility layer for the single
     * `tokenNames` array generated by previous releases of ANTLR.
     *
     * The resulting vocabulary instance returns `null` for
     * {@link getLiteralName getLiteralName(int)} and {@link getSymbolicName getSymbolicName(int)}, and the
     * value from `tokenNames` for the display names.
     *
     * @param tokenNames The token names, or `null` if no token names are
     * available.
     * @returns A {@link Vocabulary} instance which uses `tokenNames` for
     * the display names of tokens.
     */
    static fromTokenNames(tokenNames: Array<string | null> | null): Vocabulary;
    getMaxTokenType(): number;
    getLiteralName(tokenType: number): string | null;
    getSymbolicName(tokenType: number): string | null;
    getDisplayName(tokenType: number): string | null;
    getLiteralNames(): Array<string | null>;
    getSymbolicNames(): Array<string | null>;
    getDisplayNames(): Array<string | null>;
}