import { Position, Range } from 'vscode-languageserver-types';
export { Argument } from './argument';
export { JSONArgument } from './jsonArgument';
import { Comment } from './comment';
export { Comment };
export interface ImageTemplate {
    getComments(): Comment[];
    getInstructions(): Instruction[];
    getARGs(): Arg[];
    getCMDs(): Cmd[];
    getCOPYs(): Copy[];
    getENTRYPOINTs(): Entrypoint[];
    getENVs(): Env[];
    getFROMs(): From[];
    getHEALTHCHECKs(): Healthcheck[];
    getOnbuildTriggers(): Instruction[];
    contains(position: Position): boolean;
    /**
     * Retrieves an array of variable names that are valid at the
     * given line in the Dockerfile (zero-based). If the
     * line is outside the range of the parsed Dockerfile, an empty
     * array will be returned.
     *
     * @param line the interested line, zero-based
     * @return the array of variables that may be used by an
     *         instruction at the specified line
     */
    getAvailableVariables(line: number): string[];
    getRange(): Range | null;
}
export interface Dockerfile extends ImageTemplate {
    getEscapeCharacter(): string;
    getInitialARGs(): Arg[];
    getComments(): Comment[];
    /**
     * Returns the set of instructions that include the given position.
     *
     * @param position the position to search in
     * @return the set of instructions that the given position is in,
     *         or null if the position is invalid and is not contained
     *         within the Dockerfile
     */
    getContainingImage(position: Position): ImageTemplate | null;
    getDirective(): ParserDirective | null;
    /**
     * Resolves a variable with the given name at the specified line
     * to its value. If null is returned, then the variable has been
     * defined but no value was given. If undefined is returned, then
     * a variable with the given name has not been defined yet as of
     * the given line.
     *
     * @param variable the name of the variable to resolve
     * @param line the line number that the variable is on, zero-based
     * @return the value of the variable as defined by an ARG or ENV
     *         instruction, or null if no value has been specified, or
     *         undefined if a variable with the given name has not
     *         been defined or if the document does not contain the
     *         given line number
     */
    resolveVariable(variable: string, line: number): string | null | undefined;
}
export { Flag } from './flag';
import { ImageTemplate } from './imageTemplate';
import { Instruction } from './instruction';
export { Instruction };
export { Line } from './line';
import { ParserDirective } from './parserDirective';
export { ParserDirective };
export { Property } from './property';
export { Variable } from './variable';
export { Add } from './instructions/add';
import { Arg } from './instructions/arg';
export { Arg };
import { Cmd } from './instructions/cmd';
export { Cmd };
import { Copy } from './instructions/copy';
export { Copy };
import { Entrypoint } from './instructions/entrypoint';
export { Entrypoint };
import { Env } from './instructions/env';
export { Env };
import { From } from './instructions/from';
export { From };
import { Healthcheck } from './instructions/healthcheck';
export { Healthcheck };
export { JSONInstruction } from './jsonInstruction';
export { Label } from './instructions/label';
export { ModifiableInstruction } from './modifiableInstruction';
export { Onbuild } from './instructions/onbuild';
export { PropertyInstruction } from './propertyInstruction';
export { Shell } from './instructions/shell';
export { Stopsignal } from './instructions/stopsignal';
export { User } from './instructions/user';
export { Volume } from './instructions/volume';
export { Workdir } from './instructions/workdir';
export declare enum Keyword {
    ADD = "ADD",
    ARG = "ARG",
    CMD = "CMD",
    COPY = "COPY",
    ENTRYPOINT = "ENTRYPOINT",
    ENV = "ENV",
    EXPOSE = "EXPOSE",
    FROM = "FROM",
    HEALTHCHECK = "HEALTHCHECK",
    LABEL = "LABEL",
    MAINTAINER = "MAINTAINER",
    ONBUILD = "ONBUILD",
    RUN = "RUN",
    SHELL = "SHELL",
    STOPSIGNAL = "STOPSIGNAL",
    USER = "USER",
    VOLUME = "VOLUME",
    WORKDIR = "WORKDIR",
}
export declare enum Directive {
    escape = "escape",
}
export declare const DefaultVariables: string[];
export declare namespace DockerfileParser {
    function parse(content: string): Dockerfile;
}