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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | 17x 17x 17x 17x 171x 171x 171x 31x 143x 143x 35x 10x 113x 113x 113x 113x 113x 113x 5x 113x 14x 14x 8x 8x 4x 4x 4x 4x 4x | import type {CompactStrInsOp, OPCODE_STR_INS} from '../codec/compact/types';
import {AbstractOp} from './AbstractOp';
import type {OperationStrIns} from '../types';
import {find, type Path, formatJsonPointer} from '@jsonjoy.com/json-pointer';
import {OPCODE} from '../constants';
import type {IMessagePackEncoder} from '@jsonjoy.com/json-pack/lib/msgpack';
/**
* @category JSON Patch Extended
*/
export class OpStrIns extends AbstractOp<'str_ins'> {
constructor(
path: Path,
public readonly pos: number,
public readonly str: string,
) {
super(path);
}
public op() {
return 'str_ins' as const;
}
public code() {
return OPCODE.str_ins;
}
public apply(doc: unknown) {
const {val, key, obj} = 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: string = 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 as any)[key as any] = result;
else doc = result;
return {doc, old: val};
}
public toJson(parent?: AbstractOp): OperationStrIns {
const op: OperationStrIns = {
op: 'str_ins',
path: formatJsonPointer(this.path),
pos: this.pos,
str: this.str,
};
return op;
}
public toCompact(parent: undefined | AbstractOp, verbose: boolean): CompactStrInsOp {
const opcode: OPCODE_STR_INS = verbose ? 'str_ins' : OPCODE.str_ins;
return [opcode, this.path, this.pos, this.str];
}
public encode(encoder: IMessagePackEncoder, parent?: AbstractOp) {
encoder.encodeArrayHeader(4);
encoder.writer.u8(OPCODE.str_ins);
encoder.encodeArray(this.path as unknown[]);
encoder.encodeNumber(this.pos);
encoder.encodeString(this.str);
}
}
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