@metamask/ocap-kernel/dist/store/utils/parse-ref.mjs

OCap kernel core components

import { Fail } from "@endo/errors";
/**
 * Parse an alleged ref string into its components.
 *
 * @param ref - The string to be parsed.
 *
 * @returns an object with all of the ref string components as individual properties.
 */
export function parseRef(ref) {
    let context;
    let typeIdx = 1;
    switch (ref[0]) {
        case 'k':
            context = 'kernel';
            break;
        case 'o':
        case 'p':
            typeIdx = 0;
            context = 'vat';
            break;
        case 'r':
            context = 'remote';
            break;
        case undefined:
        default:
            Fail `invalid reference context ${ref[0]}`;
    }
    if (ref[typeIdx] !== 'p' && ref[typeIdx] !== 'o') {
        Fail `invalid reference type ${ref[typeIdx]}`;
    }
    const isPromise = ref[typeIdx] === 'p';
    let direction;
    let index;
    if (context === 'kernel') {
        index = ref.slice(2);
    }
    else {
        const dirIdx = typeIdx + 1;
        if (ref[dirIdx] !== '+' && ref[dirIdx] !== '-') {
            Fail `invalid reference direction ${ref[dirIdx]}`;
        }
        direction = ref[dirIdx] === '+' ? 'export' : 'import';
        index = ref.slice(dirIdx + 1);
    }
    return {
        context,
        direction,
        isPromise,
        index,
    };
}
//# sourceMappingURL=parse-ref.mjs.map