I'm transforming my game server into Wind.js style. And it's really
painless and smooth.
Wind.js has already provided the Wind.Async.Bindings.fromStandard and
Wind.Async.Bindings.fromCallback stubs to help you integrate existing codes.
For instance, I already have a EntityStore class which provides standard
style interface:
EntityStore.prototype = {
'get': function(cb) {
//...
},
'save': function(entity,cb) {
//...
}
};
In order to make it usable in Wind.js, I just added following codes at the
end of the module:
['get', 'save'].forEach(function(method) {
EntityStore.prototype[method + 'Async'] =
Wind.Async.Binding.fromStandard(EntityStore.prototype[method]);
});
As a result, I can access these methods in Wind.js easily in this way:
var users = new EntityStore('user');
var currentUser = $await(users.get(userId));
It's quite easy.
But in the other hand, Wind.js hasn't provide the reverse operation, so I
added 2 method to the library:
- Wind.Async.Binding.toStandard
- Wind.Async.Binding.toCallback
So I can replace my code method by method without any overhead:
My original code might be:
function wearEquipment(characterId, equipmentId, cb) {
//..... deep levels of callbacks
}
After refactoring, my code comes to:
var wearEquipmentAsync = eval(Wind.compile('async', function(characterId,
equipmentId) {
// code in synchronised style
});
var wearEquipment = Wind.Async.Binding.toStandard(wearEquipmentAsync);
Completely the same interface, the same function, but better-looking code.
On Thu, Aug 23, 2012 at 12:55 AM, Bruno Jouhier <[email protected]> wrote:
> On Wednesday, August 22, 2012 12:55:41 PM UTC+2, Dominic wrote:
>>
>> this is all very clever, but do code transformations really make
>> callbacks easier?
>>
>
> Take the streamline tutorial (doc:
> https://github.com/Sage/streamlinejs/blob/master/tutorial/tutorial.mdsource:
> https://github.com/Sage/streamlinejs/blob/master/tutorial/tuto7-parallel._js)
> and write it with plain callbacks.
>
>
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--
------------------------------------------------------
Tony Huang [email protected]
[email protected]
[email protected]
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