import { TextDocument, Range } from 'vscode-languageserver-types';
import { Dockerfile } from '../dockerfile';
import { Flag } from '../flag';
import { ModifiableInstruction } from '../modifiableInstruction';
export declare class From extends ModifiableInstruction {
    constructor(document: TextDocument, range: Range, dockerfile: Dockerfile, escapeChar: string, instruction: string, instructionRange: Range);
    protected stopSearchingForFlags(argument: string): boolean;
    getImage(): string | null;
    /**
     * Returns the name of the image that will be used as the base image.
     *
     * @return the base image's name, or null if unspecified
     */
    getImageName(): string | null;
    /**
     * Returns the range that covers the name of the image used by
     * this instruction.
     *
     * @return the range of the name of this instruction's argument,
     *         or null if no image has been specified
     */
    getImageNameRange(): Range | null;
    /**
     * Returns the range that covers the image argument of this
     * instruction. This includes the tag or digest of the image if
     * it has been specified by the instruction.
     *
     * @return the range of the image argument, or null if no image
     *         has been specified
     */
    getImageRange(): Range | null;
    getImageTag(): string | null;
    /**
     * Returns the range in the document that the tag of the base
     * image encompasses.
     *
     * @return the base image's tag's range in the document, or null
     *         if no tag has been specified
     */
    getImageTagRange(): Range | null;
    getImageDigest(): string | null;
    /**
     * Returns the range in the document that the digest of the base
     * image encompasses.
     *
     * @return the base image's digest's range in the document, or null
     *         if no digest has been specified
     */
    getImageDigestRange(): Range | null;
    private indexOf;
    private lastIndexOf;
    getRegistry(): string | null;
    getRegistryRange(): Range | null;
    getBuildStage(): string | null;
    getBuildStageRange(): Range | null;
    getPlatformFlag(): Flag | null;
}