edit-distance/myers-1986

import makeScan32 from './makeScan32.js';
import int32 from './int32.js';

/**
 * MakeScan.
 *
 * @param {Function} method
 * @return {Function}
 */
export default function makeScan(method) {
    const scan32 = makeScan32(method);

    /**
     * Returns distance, or -1 if distance > MAX.
     * Throws if indices are not int32.
     *
     * @param {number} MAX
     * @param {Function} eq
     * @param {number} li
     * @param {number} lj
     * @param {number} ri
     * @param {number} rj
     * @return {number}
     */
    const scan = (MAX, eq, li, lj, ri, rj) => {
        return scan32(int32(MAX), eq, int32(li), int32(lj), int32(ri), int32(rj));
    };

    return scan;
}