[Feature Request]: support WP constants about wp-stubs

[gmazzap]

@tfrommen we already have a custom visitor which is used to generate some class/function stubs from fixtures instead of the WP code.

The purpose is to use advanced Psalm types for argument and return types.

Extending that visitor to also parse functions to extract constants looks like a good idea to me.

[gmazzap]

One of the reasons this repo exists is because alternative packages don't have constants.

So yes, we should have constants.

Here the config that includes constants: https://github.com/inpsyde/wp-stubs/blob/main/generate.php#L41

So not sure why constants are not there...

[tfrommen]

I ran into this as well just last week.
In the generated files, there are constants, but very few only.

I don't know if, by default, the parser only looks at define and const in the global scope, but maybe not in functions? A lot of the default contants are defined through the wp_initial_constants function.

[tfrommen]

Oh, it does indeed seem to be the issue.

https://github.com/php-stubs/generator/blob/bf758105124218225d59e698913ac852ee7d79c7/src/NodeVisitor.php#L136-L138

Since it is possible to supply a custom visitor, I guess we may want to create one that parses function bodies, maybe of select function names only...?

[tfrommen]

This has been implemented in #7. Closing.