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var oop = exports;
oop.forceMixin = function(child /*, Parent1, ... */) {
for (i = 1; i < arguments.length; i++) {
oop._forceMixin(child, arguments[i]);
}
};
oop.mixin = oop.forceMixin;
oop._forceMixin = function(child, Parent) {
oop._forceCopyPrototype(child, Parent);
Parent.call(child);
};
oop._forceCopyPrototype = function(child, Parent) {
for (var property in Parent.prototype) {
oop._copyPrototypeProperty(child, Parent, property);
};
};
oop._copyPrototypeProperty = function(child, Parent, property) {
Object.defineProperty(child, property, {
value: Parent.prototype[property],
writable: true,
enumerable: false,
configurable: true
});
};
oop.strictMixin = function(child /*, Parent1, ... */) {
for (i = 1; i < arguments.length; i++) {
oop._strictMixin(child, arguments[i]);
}
};
oop._strictMixin = function(child, Parent) {
oop._strictCopyPrototype(child, Parent);
oop._strictCallConstructor(child, Parent);
};
oop._strictCopyPrototype = function(child, Parent) {
for (var property in Parent.prototype) {
if (child[property] === undefined) {
oop._copyPrototypeProperty(child, Parent, property);
continue;
}
oop._error(
'oop.strictMixin(): Class "' + Parent.name + '" tried to overwrite ' +
'prototype property "' + property + '".'
, oop.strictMixin);
};
};
oop._strictCallConstructor = function(child, Parent) {
var original = {};
for (var property in child) {
original[property] = child[property];
}
Parent.call(child);
for (var property in original) {
if (child[property] === original[property]) {
continue;
}
oop._error(
'oop.mixin(): Class "' + Parent.name +
'" tried to overwrite property "' + property + '".'
, oop.strictMixin);
}
};
oop.softMixin = function(child /*, Parent1, ... */) {
for (i = 1; i < arguments.length; i++) {
oop._softMixin(child, arguments[i]);
}
};
oop._softMixin = function(child, Parent) {
oop._softCopyPrototype(child, Parent);
oop._softCallConstructor(child, Parent);
};
oop._softCopyPrototype = function(child, Parent) {
for (var property in Parent.prototype) {
if (child[property] !== undefined) {
continue;
}
oop._copyPrototypeProperty(child, Parent, property);
};
};
oop._softCallConstructor = function(child, Parent) {
var original = {};
for (var property in child) {
original[property] = child[property];
}
Parent.call(child);
for (var property in original) {
child[property] = original[property];
}
};
oop._error = function(message, traceOrigin) {
var error = new Error(message);
Error.captureStackTrace(error, traceOrigin);
throw error;
};
oop.extend = function(Child, Parent) {
Child.prototype = Object.create(Parent.prototype, {
constructor: {
value: Child,
enumerable: false
}
});
for (var property in Parent) {
if (Child[property] !== undefined) {
continue;
}
Child[property] = Parent[property];
}
};
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