import { CodeEditor } from '@jupyterlab/codeeditor';
import { LanguageIdentifier } from '../lsp';
export interface IExtractedCode {
    /**
     * Foreign code (may be empty, for example line of '%R') or null if none.
     */
    foreign_code: string | null;
    /**
     * Range of the foreign code relative to the original source.
     * `null` is used internally to represent a leftover host code after extraction.
     */
    range: CodeEditor.IRange | null;
    /**
     * Shift due to any additional code inserted at the beginning of the virtual document
     * (usually in order to mock the arguments passed to a magic, or to provide other context clues for the linters)
     */
    virtual_shift: CodeEditor.IPosition | null;
    /**
     * Code to be retained in the virtual document of the host.
     */
    host_code: string | null;
}
/**
 * Foreign code extractor makes it possible to analyze code of language X embedded in code (or notebook) of language Y.
 *
 * The typical examples are:
 *  - (X=CSS< Y=HTML), or
 *  - (X=JavaScript, Y=HTML),
 *
 * while in the data analysis realm, examples include:
 *   - (X=R, Y=IPython),
 *   - (X=LATEX Y=IPython),
 *   - (X=SQL, Y=IPython)
 *
 * This extension does not aim to provide comprehensive abilities for foreign code extraction,
 * but it does intend to provide stable interface for other extensions to build on it.
 *
 * A simple, regular expression based, configurable foreign extractor is implemented
 * to provide a good reference and a good initial experience for the users.
 */
export interface IForeignCodeExtractor {
    /**
     * The foreign language.
     */
    language: LanguageIdentifier;
    /**
     * Split the code into the host and foreign code (if any foreign code was detected)
     */
    extract_foreign_code(code: string): IExtractedCode[];
    /**
     * Does the extractor produce code which should be appended to the previously established virtual document (False)
     * of the same language, or does it produce standalone snippets which require separate connections (True)?
     */
    standalone: boolean;
    /**
     * Test if there is any foreign code in provided code snippet.
     */
    has_foreign_code(code: string): boolean;
    /**
     * Extension of the virtual document (some servers check extensions of files), e.g. 'py' or 'R'.
     */
    file_extension: string;
}
export interface IForeignCodeExtractorsRegistry {
    [host_language: string]: IForeignCodeExtractor[];
}