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1import toArray from "./toArray.js";
2import toPropertyKey from "./toPropertyKey.js";
3export default function _decorate(decorators, factory, superClass, mixins) {
4 var api = _getDecoratorsApi();
5
6 if (mixins) {
7 for (var i = 0; i < mixins.length; i++) {
8 api = mixins[i](api);
9 }
10 }
11
12 var r = factory(function initialize(O) {
13 api.initializeInstanceElements(O, decorated.elements);
14 }, superClass);
15 var decorated = api.decorateClass(_coalesceClassElements(r.d.map(_createElementDescriptor)), decorators);
16 api.initializeClassElements(r.F, decorated.elements);
17 return api.runClassFinishers(r.F, decorated.finishers);
18}
19
20function _getDecoratorsApi() {
21 _getDecoratorsApi = function _getDecoratorsApi() {
22 return api;
23 };
24
25 var api = {
26 elementsDefinitionOrder: [["method"], ["field"]],
27 initializeInstanceElements: function initializeInstanceElements(O, elements) {
28 ["method", "field"].forEach(function (kind) {
29 elements.forEach(function (element) {
30 if (element.kind === kind && element.placement === "own") {
31 this.defineClassElement(O, element);
32 }
33 }, this);
34 }, this);
35 },
36 initializeClassElements: function initializeClassElements(F, elements) {
37 var proto = F.prototype;
38 ["method", "field"].forEach(function (kind) {
39 elements.forEach(function (element) {
40 var placement = element.placement;
41
42 if (element.kind === kind && (placement === "static" || placement === "prototype")) {
43 var receiver = placement === "static" ? F : proto;
44 this.defineClassElement(receiver, element);
45 }
46 }, this);
47 }, this);
48 },
49 defineClassElement: function defineClassElement(receiver, element) {
50 var descriptor = element.descriptor;
51
52 if (element.kind === "field") {
53 var initializer = element.initializer;
54 descriptor = {
55 enumerable: descriptor.enumerable,
56 writable: descriptor.writable,
57 configurable: descriptor.configurable,
58 value: initializer === void 0 ? void 0 : initializer.call(receiver)
59 };
60 }
61
62 Object.defineProperty(receiver, element.key, descriptor);
63 },
64 decorateClass: function decorateClass(elements, decorators) {
65 var newElements = [];
66 var finishers = [];
67 var placements = {
68 "static": [],
69 prototype: [],
70 own: []
71 };
72 elements.forEach(function (element) {
73 this.addElementPlacement(element, placements);
74 }, this);
75 elements.forEach(function (element) {
76 if (!_hasDecorators(element)) return newElements.push(element);
77 var elementFinishersExtras = this.decorateElement(element, placements);
78 newElements.push(elementFinishersExtras.element);
79 newElements.push.apply(newElements, elementFinishersExtras.extras);
80 finishers.push.apply(finishers, elementFinishersExtras.finishers);
81 }, this);
82
83 if (!decorators) {
84 return {
85 elements: newElements,
86 finishers: finishers
87 };
88 }
89
90 var result = this.decorateConstructor(newElements, decorators);
91 finishers.push.apply(finishers, result.finishers);
92 result.finishers = finishers;
93 return result;
94 },
95 addElementPlacement: function addElementPlacement(element, placements, silent) {
96 var keys = placements[element.placement];
97
98 if (!silent && keys.indexOf(element.key) !== -1) {
99 throw new TypeError("Duplicated element (" + element.key + ")");
100 }
101
102 keys.push(element.key);
103 },
104 decorateElement: function decorateElement(element, placements) {
105 var extras = [];
106 var finishers = [];
107
108 for (var decorators = element.decorators, i = decorators.length - 1; i >= 0; i--) {
109 var keys = placements[element.placement];
110 keys.splice(keys.indexOf(element.key), 1);
111 var elementObject = this.fromElementDescriptor(element);
112 var elementFinisherExtras = this.toElementFinisherExtras((0, decorators[i])(elementObject) || elementObject);
113 element = elementFinisherExtras.element;
114 this.addElementPlacement(element, placements);
115
116 if (elementFinisherExtras.finisher) {
117 finishers.push(elementFinisherExtras.finisher);
118 }
119
120 var newExtras = elementFinisherExtras.extras;
121
122 if (newExtras) {
123 for (var j = 0; j < newExtras.length; j++) {
124 this.addElementPlacement(newExtras[j], placements);
125 }
126
127 extras.push.apply(extras, newExtras);
128 }
129 }
130
131 return {
132 element: element,
133 finishers: finishers,
134 extras: extras
135 };
136 },
137 decorateConstructor: function decorateConstructor(elements, decorators) {
138 var finishers = [];
139
140 for (var i = decorators.length - 1; i >= 0; i--) {
141 var obj = this.fromClassDescriptor(elements);
142 var elementsAndFinisher = this.toClassDescriptor((0, decorators[i])(obj) || obj);
143
144 if (elementsAndFinisher.finisher !== undefined) {
145 finishers.push(elementsAndFinisher.finisher);
146 }
147
148 if (elementsAndFinisher.elements !== undefined) {
149 elements = elementsAndFinisher.elements;
150
151 for (var j = 0; j < elements.length - 1; j++) {
152 for (var k = j + 1; k < elements.length; k++) {
153 if (elements[j].key === elements[k].key && elements[j].placement === elements[k].placement) {
154 throw new TypeError("Duplicated element (" + elements[j].key + ")");
155 }
156 }
157 }
158 }
159 }
160
161 return {
162 elements: elements,
163 finishers: finishers
164 };
165 },
166 fromElementDescriptor: function fromElementDescriptor(element) {
167 var obj = {
168 kind: element.kind,
169 key: element.key,
170 placement: element.placement,
171 descriptor: element.descriptor
172 };
173 var desc = {
174 value: "Descriptor",
175 configurable: true
176 };
177 Object.defineProperty(obj, Symbol.toStringTag, desc);
178 if (element.kind === "field") obj.initializer = element.initializer;
179 return obj;
180 },
181 toElementDescriptors: function toElementDescriptors(elementObjects) {
182 if (elementObjects === undefined) return;
183 return toArray(elementObjects).map(function (elementObject) {
184 var element = this.toElementDescriptor(elementObject);
185 this.disallowProperty(elementObject, "finisher", "An element descriptor");
186 this.disallowProperty(elementObject, "extras", "An element descriptor");
187 return element;
188 }, this);
189 },
190 toElementDescriptor: function toElementDescriptor(elementObject) {
191 var kind = String(elementObject.kind);
192
193 if (kind !== "method" && kind !== "field") {
194 throw new TypeError('An element descriptor\'s .kind property must be either "method" or' + ' "field", but a decorator created an element descriptor with' + ' .kind "' + kind + '"');
195 }
196
197 var key = toPropertyKey(elementObject.key);
198 var placement = String(elementObject.placement);
199
200 if (placement !== "static" && placement !== "prototype" && placement !== "own") {
201 throw new TypeError('An element descriptor\'s .placement property must be one of "static",' + ' "prototype" or "own", but a decorator created an element descriptor' + ' with .placement "' + placement + '"');
202 }
203
204 var descriptor = elementObject.descriptor;
205 this.disallowProperty(elementObject, "elements", "An element descriptor");
206 var element = {
207 kind: kind,
208 key: key,
209 placement: placement,
210 descriptor: Object.assign({}, descriptor)
211 };
212
213 if (kind !== "field") {
214 this.disallowProperty(elementObject, "initializer", "A method descriptor");
215 } else {
216 this.disallowProperty(descriptor, "get", "The property descriptor of a field descriptor");
217 this.disallowProperty(descriptor, "set", "The property descriptor of a field descriptor");
218 this.disallowProperty(descriptor, "value", "The property descriptor of a field descriptor");
219 element.initializer = elementObject.initializer;
220 }
221
222 return element;
223 },
224 toElementFinisherExtras: function toElementFinisherExtras(elementObject) {
225 var element = this.toElementDescriptor(elementObject);
226
227 var finisher = _optionalCallableProperty(elementObject, "finisher");
228
229 var extras = this.toElementDescriptors(elementObject.extras);
230 return {
231 element: element,
232 finisher: finisher,
233 extras: extras
234 };
235 },
236 fromClassDescriptor: function fromClassDescriptor(elements) {
237 var obj = {
238 kind: "class",
239 elements: elements.map(this.fromElementDescriptor, this)
240 };
241 var desc = {
242 value: "Descriptor",
243 configurable: true
244 };
245 Object.defineProperty(obj, Symbol.toStringTag, desc);
246 return obj;
247 },
248 toClassDescriptor: function toClassDescriptor(obj) {
249 var kind = String(obj.kind);
250
251 if (kind !== "class") {
252 throw new TypeError('A class descriptor\'s .kind property must be "class", but a decorator' + ' created a class descriptor with .kind "' + kind + '"');
253 }
254
255 this.disallowProperty(obj, "key", "A class descriptor");
256 this.disallowProperty(obj, "placement", "A class descriptor");
257 this.disallowProperty(obj, "descriptor", "A class descriptor");
258 this.disallowProperty(obj, "initializer", "A class descriptor");
259 this.disallowProperty(obj, "extras", "A class descriptor");
260
261 var finisher = _optionalCallableProperty(obj, "finisher");
262
263 var elements = this.toElementDescriptors(obj.elements);
264 return {
265 elements: elements,
266 finisher: finisher
267 };
268 },
269 runClassFinishers: function runClassFinishers(constructor, finishers) {
270 for (var i = 0; i < finishers.length; i++) {
271 var newConstructor = (0, finishers[i])(constructor);
272
273 if (newConstructor !== undefined) {
274 if (typeof newConstructor !== "function") {
275 throw new TypeError("Finishers must return a constructor.");
276 }
277
278 constructor = newConstructor;
279 }
280 }
281
282 return constructor;
283 },
284 disallowProperty: function disallowProperty(obj, name, objectType) {
285 if (obj[name] !== undefined) {
286 throw new TypeError(objectType + " can't have a ." + name + " property.");
287 }
288 }
289 };
290 return api;
291}
292
293function _createElementDescriptor(def) {
294 var key = toPropertyKey(def.key);
295 var descriptor;
296
297 if (def.kind === "method") {
298 descriptor = {
299 value: def.value,
300 writable: true,
301 configurable: true,
302 enumerable: false
303 };
304 } else if (def.kind === "get") {
305 descriptor = {
306 get: def.value,
307 configurable: true,
308 enumerable: false
309 };
310 } else if (def.kind === "set") {
311 descriptor = {
312 set: def.value,
313 configurable: true,
314 enumerable: false
315 };
316 } else if (def.kind === "field") {
317 descriptor = {
318 configurable: true,
319 writable: true,
320 enumerable: true
321 };
322 }
323
324 var element = {
325 kind: def.kind === "field" ? "field" : "method",
326 key: key,
327 placement: def["static"] ? "static" : def.kind === "field" ? "own" : "prototype",
328 descriptor: descriptor
329 };
330 if (def.decorators) element.decorators = def.decorators;
331 if (def.kind === "field") element.initializer = def.value;
332 return element;
333}
334
335function _coalesceGetterSetter(element, other) {
336 if (element.descriptor.get !== undefined) {
337 other.descriptor.get = element.descriptor.get;
338 } else {
339 other.descriptor.set = element.descriptor.set;
340 }
341}
342
343function _coalesceClassElements(elements) {
344 var newElements = [];
345
346 var isSameElement = function isSameElement(other) {
347 return other.kind === "method" && other.key === element.key && other.placement === element.placement;
348 };
349
350 for (var i = 0; i < elements.length; i++) {
351 var element = elements[i];
352 var other;
353
354 if (element.kind === "method" && (other = newElements.find(isSameElement))) {
355 if (_isDataDescriptor(element.descriptor) || _isDataDescriptor(other.descriptor)) {
356 if (_hasDecorators(element) || _hasDecorators(other)) {
357 throw new ReferenceError("Duplicated methods (" + element.key + ") can't be decorated.");
358 }
359
360 other.descriptor = element.descriptor;
361 } else {
362 if (_hasDecorators(element)) {
363 if (_hasDecorators(other)) {
364 throw new ReferenceError("Decorators can't be placed on different accessors with for " + "the same property (" + element.key + ").");
365 }
366
367 other.decorators = element.decorators;
368 }
369
370 _coalesceGetterSetter(element, other);
371 }
372 } else {
373 newElements.push(element);
374 }
375 }
376
377 return newElements;
378}
379
380function _hasDecorators(element) {
381 return element.decorators && element.decorators.length;
382}
383
384function _isDataDescriptor(desc) {
385 return desc !== undefined && !(desc.value === undefined && desc.writable === undefined);
386}
387
388function _optionalCallableProperty(obj, name) {
389 var value = obj[name];
390
391 if (value !== undefined && typeof value !== "function") {
392 throw new TypeError("Expected '" + name + "' to be a function");
393 }
394
395 return value;
396}
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