2 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
13 * or implied. See the License for the specific language governing
14 * permissions and limitations under the License.
18 extractParentPointer(pointer) {
19 return pointer.replace(/\/[^\/]+$/, '');
22 extractLastPart(pointer) {
23 const [,lastPart] = pointer.match(/\/([^\/]+)$/) || [];
27 extractParts(pointer = '') {
28 return pointer.split('/').slice(1)
29 .map(part => part.replace(/~1/g, '/'))
30 .map(part => part.replace(/~0/g, '~'));
33 getValue(object, pointer) {
34 let parts = JSONPointer.extractParts(pointer);
35 return parts.reduce((object, part) => object && object[part], object);
38 setValue(object, pointer, value) {
39 let clone = obj => Array.isArray(obj) ? [...obj] : {...obj};
41 let parts = JSONPointer.extractParts(pointer),
42 newObject = clone(object),
44 subNewObject = newObject;
46 for(let i = 0, n = parts.length - 1; i < n; ++i) {
47 let nextSubObject = subObject && subObject[parts[i]];
48 subNewObject = subNewObject[parts[i]] = nextSubObject ? clone(nextSubObject) : {};
49 subObject = nextSubObject;
51 subNewObject[parts[parts.length - 1]] = value;
57 export default JSONPointer;