import type { NoInfo } from '../model';
import { RNode } from '../model';
import { RType } from '../type';
import type { RExpressionList } from './r-expression-list';
import type { NodeId } from '../processing/node-id';
import type { OnEnter, OnExit } from '../processing/visitor';
import type { ParentInformation } from '../processing/decorate';
/**
 * Holds a single R file starting with an expression list.
 */
export interface RProjectFile<Info = NoInfo> {
    readonly filePath?: string;
    readonly root: RExpressionList<Info>;
}
/**
 * Holds a collection of files (started with the expression list)
 * @see {@link RProject.visitAst} - to visit all nodes in the project and related helper functions
 * @see {@link RExpressionList} - for the root of each file
 * @see {@link RProject.merge} - to merge multiple projects into a single one
 * @see {@link RProjectFile} - for each file in the project
 */
export interface RProject<Info = NoInfo> {
    readonly type: RType.Project;
    readonly files: RProjectFile<Info>[];
    readonly info?: {
        id: NodeId;
    };
}
/**
 * Helper object to identify RProject nodes by their type and to provide related functions.
 * @see {@link RNode.visitAst} - to visit all nodes in the project
 */
export declare const RProject: {
    readonly name: "RProject";
    /**
     * Visits all nodes in the project by visiting the root of each file.
     * @param project          - The project to visit file by file
     * @param onVisit        - Called before visiting the subtree of each node. Can be used to stop visiting the subtree starting with this node (return `true` stop)
     * @param onExit         - Called after the subtree of a node has been visited, called for leafs too (even though their subtree is empty)
     */
    readonly visitAst: <OtherInfo>(this: void, project: RProject<OtherInfo>, onVisit?: OnEnter<OtherInfo>, onExit?: OnExit<OtherInfo>) => void;
    /**
     * Collects all node ids within a project
     * @param project - The project to collect ids from
     * @see {@link RNode.collectAllIds} - to stop collecting at certain nodes
     * @see {@link RProject.collectAllIdsWithStop} - to stop collecting at certain nodes
     */
    readonly collectAllIds: <OtherInfo>(this: void, project: RProject<OtherInfo & ParentInformation>) => Set<NodeId>;
    /**
     * Collects all node ids within a project, but stops collecting at nodes where the given `stop` function returns `true`.
     * @param project - The project to collect ids from
     * @param stop    - A function that determines whether to stop collecting at a given node, does not stop by default
     * @see {@link RNode.collectAllIdsWithStop} - to collect all ids without stopping
     * @see {@link RProject.collectAllIds} - to collect all ids without stopping
     */
    readonly collectAllIdsWithStop: <OtherInfo>(this: void, project: RProject<OtherInfo & ParentInformation>, stop: (node: RNode<OtherInfo & ParentInformation>) => boolean) => Set<NodeId>;
    /**
     * Flattens the project to an array of nodes by collecting the root nodes of each file.
     */
    readonly asNodes: <OtherInfo>(this: void, project: RProject<OtherInfo>) => RNode<OtherInfo>[];
    /**
     * Type guard for RProject nodes.
     */
    readonly is: <OtherInfo = object>(this: void, node: unknown) => node is RProject<OtherInfo>;
    /**
     * Merge multiple projects into a single one by concatenating their files.
     * This will remove the `info` property of the resulting project.
     */
    readonly merge: <Info = object>(this: void, projects: readonly RProject<Info>[]) => RProject<Info>;
};