Same results with this code:
import objc
CRApplication = objc.lookUpClass("CRApplication")
objc.registerMetaDataForSelector(
b'CRServer',
b'get_block_',
{
'arguments': {
2: {
'callable': {
'arguments': {
0:{'type': b'^v'},
1:{'type': b'@'},
2:{'type': b'@'},
3:{'type': b'?'}
},
' retval': { 'type': b'v' }
}
}
}
}
)
global server
def helloHandler(request, response, handler):
response.send_("Hello World!")
handler()
if __name__ == "__main__":
server = CRApplication.sharedApplication().delegate().server()
server.get_block_("/", helloHandler)
server.startListening()
> On Jan 7, 2020, at 04:47, Ronald Oussoren <ronaldousso...@mac.com> wrote:
>
> And given de example on https://criollo.io: <https://criollo.io/>
>
> - The class name is CRServer, not CRApplication
> - The selector is “get:block:” instead of “get_block:”, which also means the
> block is argument 3 instead of 2.
>
>>> objc.registerMetaDataForSelector(
>>> b'CRServer',
>>> b’get:block:',
>>> {
>>> 'arguments': {
>>> 3: {
>>> 'callable': {
>>> 'arguments': {
>>> 0:{'type': b'^v'},
>>> 1:{'type': b'@'},
>>> 2:{'type': b'@'},
>>> 3:{'type': b'@'}
>>> },
>>> 'retval': { 'type': b'v' }
>>> }
>>> }
>>> }
>>> }
>>> )
>
> and later:
>
>>> server.get_block_("/", helloHandler)
>
>>
>
>
> —
>
> Twitter: @ronaldoussoren
> Blog: https://blog.ronaldoussoren.net/ <https://blog.ronaldoussoren.net/>
>
>> On 7 Jan 2020, at 10:00, Ronald Oussoren via Pythonmac-SIG
>> <pythonmac-sig@python.org <mailto:pythonmac-sig@python.org>> wrote:
>>
>> Hi,
>>
>> You also need to remove the call to objc.selector. With correct metadata
>> “blocks” are callables in Python code.
>>
>> Ronald
>> —
>>
>> Twitter: @ronaldoussoren
>> Blog: https://blog.ronaldoussoren.net/ <https://blog.ronaldoussoren.net/>
>>
>>> On 6 Jan 2020, at 23:59, Rand Dvorak <randdvo...@gmail.com
>>> <mailto:randdvo...@gmail.com>> wrote:
>>>
>>> Same result:
>>>
>>> Updated code:
>>>
>>> import objc
>>> CRApplication = objc.lookUpClass("CRApplication")
>>> objc.registerMetaDataForSelector(
>>> b'CRApplication',
>>> b'get_block_',
>>> {
>>> 'arguments': {
>>> 2: {
>>> 'callable': {
>>> 'arguments': {
>>> 0:{'type': b'^v'},
>>> 1:{'type': b'@'},
>>> 2:{'type': b'@'},
>>> 3:{'type': b'@'}
>>> },
>>> ' retval': { 'type': b'v' }
>>> }
>>> }
>>> }
>>> }
>>> )
>>> global server
>>>
>>> def helloHandler(self, request, response, handler):
>>> response.send_("Hello World!")
>>> handler()
>>>
>>> if __name__ == "__main__":
>>> server = CRApplication.sharedApplication().delegate().server()
>>> server.get_block_("/", objc.selector(helloHandler, signature=b'v@:@@@'))
>>> server.startListening()
>>>
>>>
>>> results:
>>>
>>> Traceback (most recent call last):
>>> File "main.py", line 37, in <module>
>>> server.get_block_("/", objc.selector(helloHandler, signature=b'v@:@@@'))
>>> TypeError: Argument 3 is a block, but no signature available
>>>
>>>
>>>> On Jan 6, 2020, at 09:27, Ronald Oussoren <ronaldousso...@mac.com
>>>> <mailto:ronaldousso...@mac.com>> wrote:
>>>>
>>>>
>>>>
>>>>> On 6 Jan 2020, at 00:51, Rand Dvorak <randdvo...@gmail.com
>>>>> <mailto:randdvo...@gmail.com>> wrote:
>>>>>
>>>>>
>>>>> I am trying to implement a simple server in PyObjC for the Criollo HTTP
>>>>> server. The server has a method to set route handlers by passing a block
>>>>> to setup the route and then when it receives and HTTP request for the
>>>>> route it calls the block. The block has the signature:
>>>>>
>>>>> typedef void(^CRRouteBlock)(CRRequest* _Nonnull request, CRResponse*
>>>>> _Nonnull response, CRRouteCompletionBlock _Nonnull completionHandler);
>>>>>
>>>>>
>>>>> So, here is my simple proof of concept:
>>>>>
>>>>> import objc
>>>>> CRApplication = objc.lookUpClass("CRApplication")
>>>>> global server
>>>>>
>>>>> def helloHandler(self, request, response, handler):
>>>>> response.send_("Hello World!")
>>>>> handler()
>>>>>
>>>>> if __name__ == "__main__":
>>>>> server = CRApplication.sharedApplication().delegate().server()
>>>>> server.get_block_("/", objc.selector(helloHandler,
>>>>> signature=b'v@:@@@‘)) *** error occurs here
>>>>> server.startListening()
>>>>>
>>>>>
>>>>> But, when I try to setup the route I get the following error:
>>>>>
>>>>> Traceback (most recent call last):
>>>>> File "main.py", line 21, in <module>
>>>>> server.get_block_("/", objc.selector(helloHandler, signature=b'v@:@@'))
>>>>> TypeError: Argument 3 is a block, but no signature available
>>>>>
>>>>>
>>>>> Any ideas how to workaround this issue and implement the route handlers
>>>>> in PyObjC?
>>>>
>>>> The code below should do the trick, but eas typed directly into this mail
>>>> and might therefore contain syntax errors.
>>>>
>>>> import objc
>>>> objc.registerMetaDataForSelector(
>>>> b”CRApplication”, # name of the class implementing “get_block:”, or
>>>> “NSObject”
>>>> b”get_block:”,
>>>> {
>>>> “arguments”: {
>>>> 2: {
>>>> “callable”: {
>>>> “arguments”: {
>>>> 0: { “type”: b”^v” },
>>>> 1: { “type”: b”@” },
>>>> 2: { “type”: b”@” },
>>>> 3: { “type”: b”@” }
>>>> },
>>>> “retail”: { “type”: b”v” }
>>>> }
>>>> }
>>>> }
>>>> )
>>>>
>>>> This tells the bridge the signature for the block argument of the
>>>> “get_block:” selector, which is information that cannot be retrieved from
>>>> the Objective-C runtime. Argument 2 is the first real argument of ObjC
>>>> selectors, after the implicit arguments “self” and “_imp” (which is not
>>>> available in python code).
>>>>
>>>> Ronald
>>>> —
>>>>
>>>> Twitter: @ronaldoussoren
>>>> Blog: https://blog.ronaldoussoren.net/ <https://blog.ronaldoussoren.net/>
>>>>> _______________________________________________
>>>>> Pythonmac-SIG maillist - Pythonmac-SIG@python.org
>>>>> <mailto:Pythonmac-SIG@python.org>
>>>>> https://mail.python.org/mailman/listinfo/pythonmac-sig
>>>>> <https://mail.python.org/mailman/listinfo/pythonmac-sig>
>>>>> unsubscribe: https://mail.python.org/mailman/options/Pythonmac-SIG
>>>>> <https://mail.python.org/mailman/options/Pythonmac-SIG>
>>>>
>>>
>>
>> _______________________________________________
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>
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