ext-ds usages not detected

[simPod]

Describe the bug

I'm heavily dependent on ext-ds however it is reported as unused. I wonder why and what can I do to fix it.

Error dump

{"time":"2020-06-07T13:54:35.809084+00:00","level":"info","message":"version","context":{"value":"0.7.0"}}
{"time":"2020-06-07T13:54:35.809421+00:00","level":"info","message":"requires","context":{"php-64bit":"^7.2","ext-ds":"*"}}
{"time":"2020-06-07T13:54:35.809441+00:00","level":"info","message":"dev-requires","context":{"icanhazstring\/composer-unused":"^0.7.3"}}
{"time":"2020-06-07T13:54:35.809461+00:00","level":"info","message":"autoload","context":{"psr-4":{"SimPod\\Bugs\\":["src\/"]}}}
{"time":"2020-06-07T13:54:35.809480+00:00","level":"info","message":"dev-autoload","context":[]}
{"time":"2020-06-07T13:54:35.843243+00:00","level":"debug","message":"Parsing file \/Users\/user\/Work\/bugs\/src\/Example.php","context":[]}

Additional information

This is to reproduce simPod/php-bugs@e539a75

[icanhazstring]

Hi @simPod thanks for reaching out.

This is really strange. Will check into that to see if the defined symbols in the package might not be recognized correctly.

[icanhazstring]

HI @simPod good news. I could identify the issue.
Problem is that ext-ds is using a namespace for its classes, whereas core and everything else I encountered so far, is not using namespaces for classes/functions or anything.

I will need to come up with a good test to cover this (also for other extensions that might use namespaces). Shouldn't take that long, so stay tuned 👍

[icanhazstring]

You can try it with :dev-master version. Tag will come asap.
If something is still not working, do not hesitate to reopen this issue.

[simPod]

@icanhazstring RdKafka extension is also using namespaces. Tested with master and works with both. However, interesting is that 0.7.3 does not seem to have the issue with ext-rdkafka.

[icanhazstring]

Funny side note: Using the AST the node which represents the "used instance" is broken down into parts separated by \. With ext-rdkafka there is class called RdKafka which fits into the usage of RdKafka\Consumer class. So only the first part gets matched.

With ext-dsthis didn't work, because there is no Ds class inside the extension. ;)

[simPod]

[icanhazstring]

Tagged as 0.7.4

[simPod]

Wrks, thx!