mirror of https://github.com/jkjoy/sunpeiwen.git
343 lines
13 KiB
JavaScript
343 lines
13 KiB
JavaScript
var toArray = require("./toArray.js");
|
|
var toPropertyKey = require("./toPropertyKey.js");
|
|
function _decorate(decorators, factory, superClass, mixins) {
|
|
var api = _getDecoratorsApi();
|
|
if (mixins) {
|
|
for (var i = 0; i < mixins.length; i++) {
|
|
api = mixins[i](api);
|
|
}
|
|
}
|
|
var r = factory(function initialize(O) {
|
|
api.initializeInstanceElements(O, decorated.elements);
|
|
}, superClass);
|
|
var decorated = api.decorateClass(_coalesceClassElements(r.d.map(_createElementDescriptor)), decorators);
|
|
api.initializeClassElements(r.F, decorated.elements);
|
|
return api.runClassFinishers(r.F, decorated.finishers);
|
|
}
|
|
function _getDecoratorsApi() {
|
|
_getDecoratorsApi = function _getDecoratorsApi() {
|
|
return api;
|
|
};
|
|
var api = {
|
|
elementsDefinitionOrder: [["method"], ["field"]],
|
|
initializeInstanceElements: function initializeInstanceElements(O, elements) {
|
|
["method", "field"].forEach(function (kind) {
|
|
elements.forEach(function (element) {
|
|
if (element.kind === kind && element.placement === "own") {
|
|
this.defineClassElement(O, element);
|
|
}
|
|
}, this);
|
|
}, this);
|
|
},
|
|
initializeClassElements: function initializeClassElements(F, elements) {
|
|
var proto = F.prototype;
|
|
["method", "field"].forEach(function (kind) {
|
|
elements.forEach(function (element) {
|
|
var placement = element.placement;
|
|
if (element.kind === kind && (placement === "static" || placement === "prototype")) {
|
|
var receiver = placement === "static" ? F : proto;
|
|
this.defineClassElement(receiver, element);
|
|
}
|
|
}, this);
|
|
}, this);
|
|
},
|
|
defineClassElement: function defineClassElement(receiver, element) {
|
|
var descriptor = element.descriptor;
|
|
if (element.kind === "field") {
|
|
var initializer = element.initializer;
|
|
descriptor = {
|
|
enumerable: descriptor.enumerable,
|
|
writable: descriptor.writable,
|
|
configurable: descriptor.configurable,
|
|
value: initializer === void 0 ? void 0 : initializer.call(receiver)
|
|
};
|
|
}
|
|
Object.defineProperty(receiver, element.key, descriptor);
|
|
},
|
|
decorateClass: function decorateClass(elements, decorators) {
|
|
var newElements = [];
|
|
var finishers = [];
|
|
var placements = {
|
|
"static": [],
|
|
prototype: [],
|
|
own: []
|
|
};
|
|
elements.forEach(function (element) {
|
|
this.addElementPlacement(element, placements);
|
|
}, this);
|
|
elements.forEach(function (element) {
|
|
if (!_hasDecorators(element)) return newElements.push(element);
|
|
var elementFinishersExtras = this.decorateElement(element, placements);
|
|
newElements.push(elementFinishersExtras.element);
|
|
newElements.push.apply(newElements, elementFinishersExtras.extras);
|
|
finishers.push.apply(finishers, elementFinishersExtras.finishers);
|
|
}, this);
|
|
if (!decorators) {
|
|
return {
|
|
elements: newElements,
|
|
finishers: finishers
|
|
};
|
|
}
|
|
var result = this.decorateConstructor(newElements, decorators);
|
|
finishers.push.apply(finishers, result.finishers);
|
|
result.finishers = finishers;
|
|
return result;
|
|
},
|
|
addElementPlacement: function addElementPlacement(element, placements, silent) {
|
|
var keys = placements[element.placement];
|
|
if (!silent && keys.indexOf(element.key) !== -1) {
|
|
throw new TypeError("Duplicated element (" + element.key + ")");
|
|
}
|
|
keys.push(element.key);
|
|
},
|
|
decorateElement: function decorateElement(element, placements) {
|
|
var extras = [];
|
|
var finishers = [];
|
|
for (var decorators = element.decorators, i = decorators.length - 1; i >= 0; i--) {
|
|
var keys = placements[element.placement];
|
|
keys.splice(keys.indexOf(element.key), 1);
|
|
var elementObject = this.fromElementDescriptor(element);
|
|
var elementFinisherExtras = this.toElementFinisherExtras((0, decorators[i])(elementObject) || elementObject);
|
|
element = elementFinisherExtras.element;
|
|
this.addElementPlacement(element, placements);
|
|
if (elementFinisherExtras.finisher) {
|
|
finishers.push(elementFinisherExtras.finisher);
|
|
}
|
|
var newExtras = elementFinisherExtras.extras;
|
|
if (newExtras) {
|
|
for (var j = 0; j < newExtras.length; j++) {
|
|
this.addElementPlacement(newExtras[j], placements);
|
|
}
|
|
extras.push.apply(extras, newExtras);
|
|
}
|
|
}
|
|
return {
|
|
element: element,
|
|
finishers: finishers,
|
|
extras: extras
|
|
};
|
|
},
|
|
decorateConstructor: function decorateConstructor(elements, decorators) {
|
|
var finishers = [];
|
|
for (var i = decorators.length - 1; i >= 0; i--) {
|
|
var obj = this.fromClassDescriptor(elements);
|
|
var elementsAndFinisher = this.toClassDescriptor((0, decorators[i])(obj) || obj);
|
|
if (elementsAndFinisher.finisher !== undefined) {
|
|
finishers.push(elementsAndFinisher.finisher);
|
|
}
|
|
if (elementsAndFinisher.elements !== undefined) {
|
|
elements = elementsAndFinisher.elements;
|
|
for (var j = 0; j < elements.length - 1; j++) {
|
|
for (var k = j + 1; k < elements.length; k++) {
|
|
if (elements[j].key === elements[k].key && elements[j].placement === elements[k].placement) {
|
|
throw new TypeError("Duplicated element (" + elements[j].key + ")");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return {
|
|
elements: elements,
|
|
finishers: finishers
|
|
};
|
|
},
|
|
fromElementDescriptor: function fromElementDescriptor(element) {
|
|
var obj = {
|
|
kind: element.kind,
|
|
key: element.key,
|
|
placement: element.placement,
|
|
descriptor: element.descriptor
|
|
};
|
|
var desc = {
|
|
value: "Descriptor",
|
|
configurable: true
|
|
};
|
|
Object.defineProperty(obj, Symbol.toStringTag, desc);
|
|
if (element.kind === "field") obj.initializer = element.initializer;
|
|
return obj;
|
|
},
|
|
toElementDescriptors: function toElementDescriptors(elementObjects) {
|
|
if (elementObjects === undefined) return;
|
|
return toArray(elementObjects).map(function (elementObject) {
|
|
var element = this.toElementDescriptor(elementObject);
|
|
this.disallowProperty(elementObject, "finisher", "An element descriptor");
|
|
this.disallowProperty(elementObject, "extras", "An element descriptor");
|
|
return element;
|
|
}, this);
|
|
},
|
|
toElementDescriptor: function toElementDescriptor(elementObject) {
|
|
var kind = String(elementObject.kind);
|
|
if (kind !== "method" && kind !== "field") {
|
|
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 + '"');
|
|
}
|
|
var key = toPropertyKey(elementObject.key);
|
|
var placement = String(elementObject.placement);
|
|
if (placement !== "static" && placement !== "prototype" && placement !== "own") {
|
|
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 + '"');
|
|
}
|
|
var descriptor = elementObject.descriptor;
|
|
this.disallowProperty(elementObject, "elements", "An element descriptor");
|
|
var element = {
|
|
kind: kind,
|
|
key: key,
|
|
placement: placement,
|
|
descriptor: Object.assign({}, descriptor)
|
|
};
|
|
if (kind !== "field") {
|
|
this.disallowProperty(elementObject, "initializer", "A method descriptor");
|
|
} else {
|
|
this.disallowProperty(descriptor, "get", "The property descriptor of a field descriptor");
|
|
this.disallowProperty(descriptor, "set", "The property descriptor of a field descriptor");
|
|
this.disallowProperty(descriptor, "value", "The property descriptor of a field descriptor");
|
|
element.initializer = elementObject.initializer;
|
|
}
|
|
return element;
|
|
},
|
|
toElementFinisherExtras: function toElementFinisherExtras(elementObject) {
|
|
var element = this.toElementDescriptor(elementObject);
|
|
var finisher = _optionalCallableProperty(elementObject, "finisher");
|
|
var extras = this.toElementDescriptors(elementObject.extras);
|
|
return {
|
|
element: element,
|
|
finisher: finisher,
|
|
extras: extras
|
|
};
|
|
},
|
|
fromClassDescriptor: function fromClassDescriptor(elements) {
|
|
var obj = {
|
|
kind: "class",
|
|
elements: elements.map(this.fromElementDescriptor, this)
|
|
};
|
|
var desc = {
|
|
value: "Descriptor",
|
|
configurable: true
|
|
};
|
|
Object.defineProperty(obj, Symbol.toStringTag, desc);
|
|
return obj;
|
|
},
|
|
toClassDescriptor: function toClassDescriptor(obj) {
|
|
var kind = String(obj.kind);
|
|
if (kind !== "class") {
|
|
throw new TypeError('A class descriptor\'s .kind property must be "class", but a decorator' + ' created a class descriptor with .kind "' + kind + '"');
|
|
}
|
|
this.disallowProperty(obj, "key", "A class descriptor");
|
|
this.disallowProperty(obj, "placement", "A class descriptor");
|
|
this.disallowProperty(obj, "descriptor", "A class descriptor");
|
|
this.disallowProperty(obj, "initializer", "A class descriptor");
|
|
this.disallowProperty(obj, "extras", "A class descriptor");
|
|
var finisher = _optionalCallableProperty(obj, "finisher");
|
|
var elements = this.toElementDescriptors(obj.elements);
|
|
return {
|
|
elements: elements,
|
|
finisher: finisher
|
|
};
|
|
},
|
|
runClassFinishers: function runClassFinishers(constructor, finishers) {
|
|
for (var i = 0; i < finishers.length; i++) {
|
|
var newConstructor = (0, finishers[i])(constructor);
|
|
if (newConstructor !== undefined) {
|
|
if (typeof newConstructor !== "function") {
|
|
throw new TypeError("Finishers must return a constructor.");
|
|
}
|
|
constructor = newConstructor;
|
|
}
|
|
}
|
|
return constructor;
|
|
},
|
|
disallowProperty: function disallowProperty(obj, name, objectType) {
|
|
if (obj[name] !== undefined) {
|
|
throw new TypeError(objectType + " can't have a ." + name + " property.");
|
|
}
|
|
}
|
|
};
|
|
return api;
|
|
}
|
|
function _createElementDescriptor(def) {
|
|
var key = toPropertyKey(def.key);
|
|
var descriptor;
|
|
if (def.kind === "method") {
|
|
descriptor = {
|
|
value: def.value,
|
|
writable: true,
|
|
configurable: true,
|
|
enumerable: false
|
|
};
|
|
} else if (def.kind === "get") {
|
|
descriptor = {
|
|
get: def.value,
|
|
configurable: true,
|
|
enumerable: false
|
|
};
|
|
} else if (def.kind === "set") {
|
|
descriptor = {
|
|
set: def.value,
|
|
configurable: true,
|
|
enumerable: false
|
|
};
|
|
} else if (def.kind === "field") {
|
|
descriptor = {
|
|
configurable: true,
|
|
writable: true,
|
|
enumerable: true
|
|
};
|
|
}
|
|
var element = {
|
|
kind: def.kind === "field" ? "field" : "method",
|
|
key: key,
|
|
placement: def["static"] ? "static" : def.kind === "field" ? "own" : "prototype",
|
|
descriptor: descriptor
|
|
};
|
|
if (def.decorators) element.decorators = def.decorators;
|
|
if (def.kind === "field") element.initializer = def.value;
|
|
return element;
|
|
}
|
|
function _coalesceGetterSetter(element, other) {
|
|
if (element.descriptor.get !== undefined) {
|
|
other.descriptor.get = element.descriptor.get;
|
|
} else {
|
|
other.descriptor.set = element.descriptor.set;
|
|
}
|
|
}
|
|
function _coalesceClassElements(elements) {
|
|
var newElements = [];
|
|
var isSameElement = function isSameElement(other) {
|
|
return other.kind === "method" && other.key === element.key && other.placement === element.placement;
|
|
};
|
|
for (var i = 0; i < elements.length; i++) {
|
|
var element = elements[i];
|
|
var other;
|
|
if (element.kind === "method" && (other = newElements.find(isSameElement))) {
|
|
if (_isDataDescriptor(element.descriptor) || _isDataDescriptor(other.descriptor)) {
|
|
if (_hasDecorators(element) || _hasDecorators(other)) {
|
|
throw new ReferenceError("Duplicated methods (" + element.key + ") can't be decorated.");
|
|
}
|
|
other.descriptor = element.descriptor;
|
|
} else {
|
|
if (_hasDecorators(element)) {
|
|
if (_hasDecorators(other)) {
|
|
throw new ReferenceError("Decorators can't be placed on different accessors with for " + "the same property (" + element.key + ").");
|
|
}
|
|
other.decorators = element.decorators;
|
|
}
|
|
_coalesceGetterSetter(element, other);
|
|
}
|
|
} else {
|
|
newElements.push(element);
|
|
}
|
|
}
|
|
return newElements;
|
|
}
|
|
function _hasDecorators(element) {
|
|
return element.decorators && element.decorators.length;
|
|
}
|
|
function _isDataDescriptor(desc) {
|
|
return desc !== undefined && !(desc.value === undefined && desc.writable === undefined);
|
|
}
|
|
function _optionalCallableProperty(obj, name) {
|
|
var value = obj[name];
|
|
if (value !== undefined && typeof value !== "function") {
|
|
throw new TypeError("Expected '" + name + "' to be a function");
|
|
}
|
|
return value;
|
|
}
|
|
module.exports = _decorate, module.exports.__esModule = true, module.exports["default"] = module.exports; |