import { CharStream, Token } from "antlr4ng";
import { STGroup } from "./STGroup.js";
import { ICompiledST } from "./compiler/common.js";
/**
 * A directory or directory tree full of templates and/or group files.
 *  We load files on-demand. Dir search path: current working dir then
 *  CLASSPATH (as a resource).  Do not look for templates outside of this dir
 *  subtree (except via imports).
 */
export declare class STGroupDir extends STGroup {
    groupDirName: string;
    constructor(dirName: string);
    constructor(dirName: string, encoding: string);
    constructor(dirName: string, delimiterStartChar: string, delimiterStopChar: string);
    constructor(dirName: string, encoding: string, delimiterStartChar: string, delimiterStopChar: string);
    importTemplates(g: STGroup): void;
    importTemplates(fileNameToken: Token): void;
    importTemplates(g: STGroup, clearOnUnload: boolean): void;
    /**
     * Load .st as relative file name relative to root by {@code prefix}.
     */
    loadTemplateFile(prefix: string, unqualifiedFileName: string): ICompiledST | undefined;
    getName(): string;
    getFileName(): string;
    load(): void;
    /**
     * Load a template from directory or group file.  Group file is given
     *  precedence over directory with same name. {@code name} is always fully-qualified.
     * @param name
     */
    load(name: string): ICompiledST | undefined | null;
    /** Separated call to allow overriding it in derived classes. */
    protected doLoadTemplateFile(prefix: string, unqualifiedFileName: string, templateStream: CharStream): ICompiledST | undefined;
}