json-joy/lib/json-crdt-extensions/peritext/slice/schema.js

Collection of libraries for building collaborative editing apps.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.slice = exports.step = exports.type = void 0;
const json_crdt_patch_1 = require("../../../json-crdt-patch");
const constants_1 = require("./constants");
const type = (sliceType) => Array.isArray(sliceType) ? json_crdt_patch_1.s.arr(sliceType.map(exports.step)) : json_crdt_patch_1.s.con(sliceType);
exports.type = type;
const step = (sliceStep) => {
    if (Array.isArray(sliceStep)) {
        const tuple = [json_crdt_patch_1.s.con(sliceStep[0])];
        const length = sliceStep.length;
        if (length > 1)
            tuple.push(json_crdt_patch_1.s.con(+(sliceStep[1] ?? 0)));
        if (length > 2)
            tuple.push(json_crdt_patch_1.s.json(sliceStep[2] ?? {}));
        return json_crdt_patch_1.s.vec(...tuple);
    }
    return json_crdt_patch_1.s.con(sliceStep);
};
exports.step = step;
const slice = (range, stacking, sliceType, data) => {
    const { start, end } = range;
    const header = (stacking << constants_1.SliceHeaderShift.Stacking) +
        ((start.anchor & 0b1) << constants_1.SliceHeaderShift.X1Anchor) +
        ((end.anchor & 0b1) << constants_1.SliceHeaderShift.X2Anchor);
    const elements = [
        json_crdt_patch_1.s.con(header),
        json_crdt_patch_1.s.con(start.id),
        json_crdt_patch_1.s.con(!(0, json_crdt_patch_1.compare)(start.id, end.id) ? 0 : end.id),
        (0, exports.type)(sliceType),
    ];
    if (data !== void 0)
        elements.push(json_crdt_patch_1.s.json(data));
    return json_crdt_patch_1.s.vec(...elements);
};
exports.slice = slice;
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