@metamask/ocap-kernel/dist/store/utils/reachable.cjs

OCap kernel core components

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseReachableAndVatSlot = parseReachableAndVatSlot;
exports.buildReachableAndVatSlot = buildReachableAndVatSlot;
const assert_ts_1 = require("../../utils/assert.cjs");
/**
 * Parse a string into an object with `isReachable` and `vatSlot` properties.
 *
 * @param value - The string to parse.
 * @returns An object with `isReachable` and `vatSlot` properties.
 */
function parseReachableAndVatSlot(value) {
    typeof value === 'string' || (0, assert_ts_1.Fail) `non-string value: ${value}`;
    const flag = value.slice(0, 1);
    assert_ts_1.assert.equal(value.slice(1, 2), ' ');
    const vatSlot = value.slice(2);
    let isReachable;
    if (flag === 'R') {
        isReachable = true;
    }
    else if (flag === '_') {
        isReachable = false;
    }
    else {
        throw (0, assert_ts_1.Fail) `flag (${flag}) must be 'R' or '_'`;
    }
    return { isReachable, vatSlot };
}
harden(parseReachableAndVatSlot);
/**
 * Build a string from an object with `isReachable` and `vatSlot` properties.
 *
 * @param isReachable - The `isReachable` property of the object.
 * @param vatSlot - The `vatSlot` property of the object.
 * @returns A string with the `isReachable` and `vatSlot` properties.
 */
function buildReachableAndVatSlot(isReachable, vatSlot) {
    return `${isReachable ? 'R' : '_'} ${vatSlot}`;
}
harden(buildReachableAndVatSlot);
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