json-joy
Version:
Collection of libraries for building collaborative editing apps.
63 lines (62 loc) • 1.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.OpStrIns = void 0;
const AbstractOp_1 = require("./AbstractOp");
const json_pointer_1 = require("@jsonjoy.com/json-pointer");
const constants_1 = require("../constants");
/**
* @category JSON Patch Extended
*/
class OpStrIns extends AbstractOp_1.AbstractOp {
constructor(path, pos, str) {
super(path);
this.pos = pos;
this.str = str;
}
op() {
return 'str_ins';
}
code() {
return constants_1.OPCODE.str_ins;
}
apply(doc) {
const { val, key, obj } = (0, json_pointer_1.find)(doc, this.path);
if (typeof val !== 'string') {
if (val !== undefined)
throw new Error('NOT_A_STRING');
if (this.pos !== 0)
throw new Error('POS');
}
const str = typeof val === 'string' ? val : '';
const pos = Math.min(this.pos, str.length);
const before = str.slice(0, pos);
const after = str.slice(pos);
const result = before + this.str + after;
if (obj)
obj[key] = result;
else
doc = result;
return { doc, old: val };
}
toJson(parent) {
const op = {
op: 'str_ins',
path: (0, json_pointer_1.formatJsonPointer)(this.path),
pos: this.pos,
str: this.str,
};
return op;
}
toCompact(parent, verbose) {
const opcode = verbose ? 'str_ins' : constants_1.OPCODE.str_ins;
return [opcode, this.path, this.pos, this.str];
}
encode(encoder, parent) {
encoder.encodeArrayHeader(4);
encoder.writer.u8(constants_1.OPCODE.str_ins);
encoder.encodeArray(this.path);
encoder.encodeNumber(this.pos);
encoder.encodeString(this.str);
}
}
exports.OpStrIns = OpStrIns;