import { ATNState, OrderedHashSet } from "antlr4ng";
import { FrequencySet } from "../../misc/FrequencySet.js";
import { Rule } from "../../tool/Rule.js";
import { AltAST } from "../../tool/ast/AltAST.js";
import { GrammarAST } from "../../tool/ast/GrammarAST.js";
import { IOutputModelFactory } from "../IOutputModelFactory.js";
import { Action } from "./Action.js";
import { ExceptionClause } from "./ExceptionClause.js";
import { OutputModelObject } from "./OutputModelObject.js";
import { SrcOp } from "./SrcOp.js";
import { AltLabelStructDecl } from "./decl/AltLabelStructDecl.js";
import { AttributeDecl } from "./decl/AttributeDecl.js";
import { Decl } from "./decl/Decl.js";
import { StructDecl } from "./decl/StructDecl.js";
export declare class RuleFunction extends OutputModelObject {
    readonly name: string;
    readonly escapedName: string;
    readonly modifiers: string[];
    ctxType: string;
    readonly ruleLabels: Set<string> | null;
    readonly tokenLabels: Set<string>;
    readonly startState: ATNState;
    readonly index: number;
    readonly rule: Rule;
    readonly altToContext: AltLabelStructDecl[];
    hasLookaheadBlock: boolean;
    code: SrcOp[];
    readonly locals: OrderedHashSet<Decl>;
    args?: AttributeDecl[];
    ruleCtx: StructDecl;
    altLabelCtxs?: Map<string, AltLabelStructDecl>;
    namedActions: Map<string, Action> | undefined;
    finallyAction: Action | undefined;
    exceptions: ExceptionClause[] | undefined;
    postamble: SrcOp[] | undefined;
    constructor(factory: IOutputModelFactory, r: Rule);
    addContextGetters(factory: IOutputModelFactory, r: Rule): void;
    fillNamedActions(factory: IOutputModelFactory, r: Rule): void;
    /**
     * For all alts, find which ref X or r needs List. Must see across alts.
     * If any alt needs X or r as list, then define as list.
     */
    getDeclsForAllElements(altASTs: AltAST[]): Set<Decl>;
    getDeclForAltElement(t: GrammarAST, refLabelName: string, needList: boolean, optional: boolean): Decl[];
    /** Add local var decl */
    addLocalDecl(d: Decl): void;
    /** Add decl to struct ctx for rule or alt if labeled. */
    addContextDecl(altLabel: string, d: Decl): void;
    /** Given list of X and r refs in alt, compute how many of each there are. */
    protected getElementFrequenciesForAlt(ast: AltAST): [FrequencySet<string>, FrequencySet<string>];
    private getRuleTokens;
    private getName;
    private nodesToStrings;
}