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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 | 18x 18x 18x 18x 254x 254x 40x 205x 203x 199x 85x 71x 14x 199x 27x 27x 27x 16x 16x 8x 8x 8x 8x 8x | import type {CompactRemoveOp, OPCODE_REMOVE} from '../codec/compact/types';
import {AbstractOp} from './AbstractOp';
import type {OperationRemove} from '../types';
import {find, isObjectReference, isArrayReference, 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
*/
export class OpRemove extends AbstractOp<'remove'> {
constructor(
path: Path,
public readonly oldValue: unknown,
) {
super(path);
}
public op() {
return 'remove' as const;
}
public code() {
return OPCODE.remove;
}
public apply(doc: unknown) {
const ref = find(doc, this.path);
if (ref.val === undefined) throw new Error('NOT_FOUND');
if (isObjectReference(ref)) delete ref.obj[ref.key];
else if (isArrayReference(ref)) {
if (ref.val !== undefined) ref.obj.splice(ref.key, 1);
} else doc = null;
return {doc, old: ref.val};
}
public toJson(parent?: AbstractOp): OperationRemove {
const json: OperationRemove = {
op: 'remove',
path: formatJsonPointer(this.path),
};
if (this.oldValue !== undefined) (json as any).oldValue = this.oldValue;
return json;
}
public toCompact(parent: undefined | AbstractOp, verbose: boolean): CompactRemoveOp {
const opcode: OPCODE_REMOVE = verbose ? 'remove' : OPCODE.remove;
return this.oldValue === undefined
? ([opcode, this.path] as CompactRemoveOp)
: ([opcode, this.path, this.oldValue] as CompactRemoveOp);
}
public encode(encoder: IMessagePackEncoder, parent?: AbstractOp) {
const hasOldValue = this.oldValue !== undefined;
encoder.encodeArrayHeader(hasOldValue ? 3 : 2);
encoder.writer.u8(OPCODE.remove);
encoder.encodeArray(this.path as unknown[]);
if (hasOldValue) encoder.encodeAny(this.oldValue);
}
}
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