function addMethods()

in riff-raff/public/javascripts/rickshaw.js [198:228]

• 8 lines of code
• 9 McCabe index (conditional complexity)

  function addMethods(source) {
    var ancestor   = this.superclass && this.superclass.prototype,
        properties = keys(source);

    // IE6 doesn't enumerate `toString` and `valueOf` (among other built-in `Object.prototype`) properties,
    // Force copy if they're not Object.prototype ones.
    // Do not copy other Object.prototype.* for performance reasons
    if (IS_DONTENUM_BUGGY) {
      if (source.toString != Object.prototype.toString)
        properties.push("toString");
      if (source.valueOf != Object.prototype.valueOf)
        properties.push("valueOf");
    }

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && isFunction(value) &&
          argumentNames(value)[0] == "$super") {
        var method = value;
        value = wrap((function(m) {
          return function() { return ancestor[m].apply(this, arguments); };
        })(property), method);

        value.valueOf = bind(method.valueOf, method);
        value.toString = bind(method.toString, method);
      }
      this.prototype[property] = value;
    }

    return this;
  }