json-joy
Version:
Collection of libraries for building collaborative editing apps.
71 lines (70 loc) • 2.43 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.OpMerge = void 0;
const AbstractOp_1 = require("./AbstractOp");
const json_pointer_1 = require("@jsonjoy.com/json-pointer");
const util_1 = require("../util");
const constants_1 = require("../constants");
/**
* @category JSON Patch Extended
*/
class OpMerge extends AbstractOp_1.AbstractOp {
constructor(path, pos, props) {
super(path);
this.pos = pos;
this.props = props;
}
op() {
return 'merge';
}
code() {
return constants_1.OPCODE.merge;
}
apply(doc) {
const ref = (0, json_pointer_1.find)(doc, this.path);
if (!(0, json_pointer_1.isArrayReference)(ref))
throw new Error('INVALID_TARGET');
if (ref.key <= 0)
throw new Error('INVALID_KEY');
const one = ref.obj[ref.key - 1];
const two = ref.obj[ref.key];
const merged = this.merge(one, two);
ref.obj[ref.key - 1] = merged;
ref.obj.splice(ref.key, 1);
return { doc, old: [one, two] };
}
merge(one, two) {
if (typeof one === 'string' && typeof two === 'string')
return one + two;
if (typeof one === 'number' && typeof two === 'number')
return one + two;
if ((0, util_1.isTextNode)(one) && (0, util_1.isTextNode)(two))
return { ...one, ...two, text: one.text + two.text };
if ((0, util_1.isElementNode)(one) && (0, util_1.isElementNode)(two))
return { ...one, ...two, children: [...one.children, ...two.children] };
return [one, two];
}
toJson(parent) {
const op = {
op: 'merge',
path: (0, json_pointer_1.formatJsonPointer)(this.path),
pos: this.pos,
};
if (this.props)
op.props = this.props;
return op;
}
toCompact(parent, verbose) {
const opcode = verbose ? 'merge' : constants_1.OPCODE.merge;
return this.props ? [opcode, this.path, this.pos, this.props] : [opcode, this.path, this.pos];
}
encode(encoder, parent) {
encoder.encodeArrayHeader(this.props ? 4 : 3);
encoder.writer.u8(constants_1.OPCODE.merge);
encoder.encodeArray(this.path);
encoder.encodeNumber(this.pos);
if (this.props)
encoder.encodeAny(this.props);
}
}
exports.OpMerge = OpMerge;