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48 lines
1.7 KiB
48 lines
1.7 KiB
define(function (){
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function kwargs(func, defaults) {
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/*jshint maxlen : 200*/
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var removeComments = new RegExp('(\\/\\*[\\w\\\'\\,\\(\\)\\s\\r\\n\\*]*\\*\\/)|(\\/\\/[\\w\\s\\\'][^\\n\\r]*$)|(<![\\-\\-\\s\\w\\>\\/]*>)', 'gim');
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var removeWhitespc = new RegExp('\\s+', 'gim');
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var matchSignature = new RegExp('function.*?\\((.*?)\\)', 'i');
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// get the argument names from function source
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var names = func.toString()
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.replace(removeComments, '')
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.replace(removeWhitespc, '')
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.match(matchSignature)[1]
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.split(',');
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// Check the existance of default, if not create an object
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if(defaults !== Object(defaults)){
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defaults = {};
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}
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return function () {
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var args = Array.prototype.slice.call(arguments);
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var kwargs = args[args.length - 1];
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// Check the existance of the kwargs
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if (kwargs && kwargs.constructor === Object) {
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args.pop();
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}
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else{
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kwargs = {};
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}
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// Fill the arguments and apply them
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for (var i = 0; i < names.length; i++) {
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var name = names[i];
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if (name in kwargs) {
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args[i] = kwargs[name];
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}
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else if(name in defaults && args[i] == null){
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args[i] = defaults[name];
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}
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}
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return func.apply(this, args);
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};
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}
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// As function prototype
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// Function.prototype.kwargs = kwargs;
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return kwargs;
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});
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