1 | 'use strict'
|
2 |
|
3 | const {
|
4 | kReply,
|
5 | kRequest
|
6 | } = require('./symbols.js')
|
7 |
|
8 | const {
|
9 | codes: {
|
10 | FST_ERR_DEC_ALREADY_PRESENT,
|
11 | FST_ERR_DEC_MISSING_DEPENDENCY
|
12 | }
|
13 | } = require('./errors')
|
14 |
|
15 | function decorate (instance, name, fn, dependencies) {
|
16 | if (instance.hasOwnProperty(name)) {
|
17 | throw new FST_ERR_DEC_ALREADY_PRESENT(name)
|
18 | }
|
19 |
|
20 | if (dependencies) {
|
21 | checkDependencies(instance, dependencies)
|
22 | }
|
23 |
|
24 | if (fn && (typeof fn.getter === 'function' || typeof fn.setter === 'function')) {
|
25 | Object.defineProperty(instance, name, {
|
26 | get: fn.getter,
|
27 | set: fn.setter
|
28 | })
|
29 | } else {
|
30 | instance[name] = fn
|
31 | }
|
32 | }
|
33 |
|
34 | function decorateFastify (name, fn, dependencies) {
|
35 | decorate(this, name, fn, dependencies)
|
36 | return this
|
37 | }
|
38 |
|
39 | function checkExistence (instance, name) {
|
40 | if (name) {
|
41 | return name in instance
|
42 | }
|
43 |
|
44 | return instance in this
|
45 | }
|
46 |
|
47 | function checkRequestExistence (name) {
|
48 | return checkExistence(this[kRequest].prototype, name)
|
49 | }
|
50 |
|
51 | function checkReplyExistence (name) {
|
52 | return checkExistence(this[kReply].prototype, name)
|
53 | }
|
54 |
|
55 | function checkDependencies (instance, deps) {
|
56 | for (var i = 0; i < deps.length; i++) {
|
57 | if (!checkExistence(instance, deps[i])) {
|
58 | throw new FST_ERR_DEC_MISSING_DEPENDENCY(deps[i])
|
59 | }
|
60 | }
|
61 | }
|
62 |
|
63 | function decorateReply (name, fn, dependencies) {
|
64 | decorate(this[kReply].prototype, name, fn, dependencies)
|
65 | return this
|
66 | }
|
67 |
|
68 | function decorateRequest (name, fn, dependencies) {
|
69 | decorate(this[kRequest].prototype, name, fn, dependencies)
|
70 | return this
|
71 | }
|
72 |
|
73 | module.exports = {
|
74 | add: decorateFastify,
|
75 | exist: checkExistence,
|
76 | existRequest: checkRequestExistence,
|
77 | existReply: checkReplyExistence,
|
78 | dependencies: checkDependencies,
|
79 | decorateReply: decorateReply,
|
80 | decorateRequest: decorateRequest
|
81 | }
|