var RTL$ = { extend: function extend(methods){ function Type(){ for(var m in methods) this[m] = methods[m]; } Type.prototype = this.prototype; var result = methods.init; result.prototype = new Type(); // inherit this.prototype result.prototype.constructor = result; // to see constructor name in diagnostic result.extend = extend; return result; } }; var m = function (){ var T = RTL$.extend({ init: function T(){ this.i = 0; } }); var D = T.extend({ init: function D(){ T.prototype.init.call(this); } }); T.prototype.p = function(){ this.i = 123; } T.prototype.p2 = function(i/*INTEGER*/){ return i; } D.prototype.p = function(){ T.prototype.p.call(this); } D.prototype.p2 = function(i/*INTEGER*/){ return T.prototype.p2.call(this, i); } }();