Example Mapping Parameter Names to Call Values

Example Mapping Parameter Names to Call Values

;(function() {
	var slice = Array.prototype.slice
	var console = window["console"] || {console:{}};

	var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
	function getParamNames(func) {
	  var fnStr = func.toString().replace(STRIP_COMMENTS, '')
	  var result = fnStr.slice(fnStr.indexOf('(')+1, fnStr.indexOf(')')).match(/([^\s,]+)/g)
	  if(result === null)
	     result = []
	  return result;
	};

	function mapParameters(func, args) {
		var a = getParamNames(func);
		var mapping = {};
		for (var i = 0; i < a.length; i++) {
			var g = args[i];
			mapping[a[i]] = g;
		}
		mapping["..."] = slice.call(args, a.length);
		return mapping;
	};

	console.params = function() {
		var args = arguments.callee.caller.arguments
		var mapping = mapParameters(arguments.callee.caller, slice.call(args));
		console.log(mapping);
	}

})();

(function(a, b, c) {

	console.params();

})(1, 2, 3, 4, 5, 6, false, {});

// Object {a: 1, b: 2, c: 3, ...: Array[5]}