Please change “get_block_” to “get:block:” in the call to objc.registerMetadataForSelector.
Ronald — Twitter: @ronaldoussoren Blog: https://blog.ronaldoussoren.net/ > On 8 Jan 2020, at 02:04, Rand Dvorak <randdvo...@gmail.com> wrote: > > 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 >> <mailto: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> >>>>> >>>> >>> >>> _______________________________________________ >>> 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> >> >
_______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org https://mail.python.org/mailman/listinfo/pythonmac-sig unsubscribe: https://mail.python.org/mailman/options/Pythonmac-SIG
