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Protected protocol
"use strict";
Function.prototype.curry = function(){
var bindArgs = [undefined].concat(Array.prototype.slice.call(arguments, 0));
console.log('bindArgs', bindArgs);
return Function.prototype.bind.apply(this, bindArgs);
}
function makeProtectedStore(){
var wm = new WeakMap();
return function(o){
console.log('typeof o', typeof o);
var p = wm.get(o);
if(!p){
p = {};
wm.set(o, p);
}
return p;
};
}
// add a cache? so that makeConstructorWithProtected(C) === makeConstructorWithProtected(C)?
function makeConstructorWithProtected(C){
var prot = makeProtectedStore();
var boundC = C.curry(prot);
Object.defineProperty(boundC, 'originalConstructor', {
value: C
});
Object.defineProperty(boundC, 'prototype', {
configurable: false,
get: function(){return C.prototype;},
set: function(v){C.prototype = v;}
});
return boundC;
}
function inherit(constr, parent){
var prot = makeProtectedStore();
var boundParent = function(){
return parent.originalConstructor.apply(this, [prot].concat(Array.prototype.slice.call(arguments, 0)))
};
return constr.curry(prot, boundParent);
}
// PERSON
(function(global){
function Person(Protected, name){
console.log('this in Person', this);
Protected(this).secret = String(Math.random()).substr(2);
console.info("person's secret", Protected(this).secret, "...shhhhhhh!!!...");
this.name = name;
}
global.Person = makeConstructorWithProtected(Person);
})(this);
// COMPUTER SAVVY PERSON
(function(global){
function ComputerSavvyPerson(Protected, Super, name, favoriteLanguage){
console.log('this in ComputerSavvyPerson', this);
Super.call(this, name);
this.favoriteLanguage = favoriteLanguage;
this.getSecretFirstLetter = function(){
return Protected(this).secret[0];
}
}
global.ComputerSavvyPerson = inherit(ComputerSavvyPerson, Person);
})(this);
// CLIENT CODE
var d = new Person('David');
console.log('d.name:', d.name);
console.log(d);
var db = new ComputerSavvyPerson('David Bruant', 'JavaScript');
console.log('db.name:', db.name);
console.log('db.favoriteLanguage:', db.favoriteLanguage);
console.log('first letter secret', db.getSecretFirstLetter());
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