git.r.bdr.sh - rbdr/dotfiles/blob

   1 (function() {
   2   var Mixin, PropertyAccessors, WeakMap, _ref, _ref1,
   3     __hasProp = {}.hasOwnProperty,
   4     __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
   5
   6   Mixin = require('mixto');
   7
   8   WeakMap = (_ref = global.WeakMap) != null ? _ref : require('es6-weak-map');
   9
  10   module.exports = PropertyAccessors = (function(_super) {
  11     __extends(PropertyAccessors, _super);
  12
  13     function PropertyAccessors() {
  14       _ref1 = PropertyAccessors.__super__.constructor.apply(this, arguments);
  15       return _ref1;
  16     }
  17
  18     PropertyAccessors.prototype.accessor = function(name, definition) {
  19       if (typeof definition === 'function') {
  20         definition = {
  21           get: definition
  22         };
  23       }
  24       return Object.defineProperty(this, name, definition);
  25     };
  26
  27     PropertyAccessors.prototype.advisedAccessor = function(name, definition) {
  28       var getAdvice, setAdvice, values;
  29       if (typeof definition === 'function') {
  30         getAdvice = definition;
  31       } else {
  32         getAdvice = definition.get;
  33         setAdvice = definition.set;
  34       }
  35       values = new WeakMap;
  36       return this.accessor(name, {
  37         get: function() {
  38           if (getAdvice != null) {
  39             getAdvice.call(this);
  40           }
  41           return values.get(this);
  42         },
  43         set: function(newValue) {
  44           if (setAdvice != null) {
  45             setAdvice.call(this, newValue, values.get(this));
  46           }
  47           return values.set(this, newValue);
  48         }
  49       });
  50     };
  51
  52     PropertyAccessors.prototype.lazyAccessor = function(name, definition) {
  53       var values;
  54       values = new WeakMap;
  55       return this.accessor(name, {
  56         get: function() {
  57           if (values.has(this)) {
  58             return values.get(this);
  59           } else {
  60             values.set(this, definition.call(this));
  61             return values.get(this);
  62           }
  63         },
  64         set: function(value) {
  65           return values.set(this, value);
  66         }
  67       });
  68     };
  69
  70     return PropertyAccessors;
  71
  72   })(Mixin);
  73
  74 }).call(this);