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function.js rewrite.

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Tobie Langel 2008-12-11 11:49:41 +01:00
parent 0b646c01c6
commit 535d4e6d18
2 changed files with 74 additions and 41 deletions
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2
CHANGELOG
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@ -1,3 +1,5 @@
* Performance improvements in Function methods (Samuel Lebeau, kangax, jddalton, Tobie Langel).
*1.6.0.3* (September 29, 2008)
* Add support for the Chrome browser in jstest.rb. (Andrew Dupont)

113
src/lang/function.js
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@ -1,57 +1,88 @@
Object.extend(Function.prototype, {
argumentNames: function() {
Object.extend(Function.prototype, (function() {
var slice = Array.prototype.slice;
function update(array, args) {
var arrayLength = array.length, length = args.length;
while (length--) array[arrayLength + length] = args[length];
return array;
}
function merge(array, args) {
array = slice.call(array, 0);
return update(array, args);
}
function argumentNames() {
var names = this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
.replace(/\s+/g, '').split(',');
return names.length == 1 && !names[0] ? [] : names;
},
bind: function() {
if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
var __method = this, args = $A(arguments), object = args.shift();
return function() {
return __method.apply(object, args.concat($A(arguments)));
}
},
bindAsEventListener: function() {
var __method = this, args = $A(arguments), object = args.shift();
return function(event) {
return __method.apply(object, [event || window.event].concat(args));
}
},
curry: function() {
if (!arguments.length) return this;
var __method = this, args = $A(arguments);
return function() {
return __method.apply(this, args.concat($A(arguments)));
}
},
}
delay: function() {
var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
function bind(context) {
if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
var __method = this, args = slice.call(arguments, 1);
return function() {
var a = merge(args, arguments);
return __method.apply(context, a);
}
}
function bindAsEventListener(context) {
var __method = this, args = slice.call(arguments, 1);
return function(event) {
var a = update([event || window.event], args);
return __method.apply(context, a);
}
}
function curry() {
if (!arguments.length) return this;
var __method = this, args = slice.call(arguments, 0);
return function() {
var a = merge(args, arguments);
return __method.apply(this, a);
}
}
function delay(timeout) {
var __method = this, args = slice.call(arguments, 1);
timeout = timeout * 1000
return window.setTimeout(function() {
return __method.apply(__method, args);
}, timeout);
},
defer: function() {
var args = [0.01].concat($A(arguments));
}
function defer() {
var args = update([0.01], arguments);
return this.delay.apply(this, args);
},
wrap: function(wrapper) {
}
function wrap(wrapper) {
var __method = this;
return function() {
return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
var a = update([__method.bind(this)], arguments);
return wrapper.apply(this, a);
}
},
methodize: function() {
}
function methodize() {
if (this._methodized) return this._methodized;
var __method = this;
return this._methodized = function() {
return __method.apply(null, [this].concat($A(arguments)));
var a = update([this], arguments);
return __method.apply(null, a);
};
}
});
return {
argumentNames: argumentNames,
bind: bind,
bindAsEventListener: bindAsEventListener,
curry: curry,
delay: delay,
defer: defer,
wrap: wrap,
methodize: methodize
}
})());