How to cache classmethods/staticmethods?

[rdong8]

This works:

    @classmethod
    @cachebox.cachedmethod(Cache(0))

However I get an error in my editor:

Argument of type "_async_cached_wrapper[Any, (backend_url: str = config.backend_url)]" cannot be assigned to parameter "f" of type "(type[_T@classmethod], **_P@classmethod) -> _R_co@classmethod" in function "__init__"
  Type "_async_cached_wrapper[Any, (backend_url: str = config.backend_url)]" is not assignable to type "(type[_T@classmethod], **_P@classmethod) -> _R_co@classmethod"
    Parameter 1: type "type[_T@classmethod]" is incompatible with type "str"
      "type[type]" is not assignable to "type[str]"

Flipping the order of the decorators does not work.

[awolverp]

Use cached for staticmethod and cachedmethod for classmethod.

    @cachedmethod(...)
    @classmethod
    def test1(cls, params):
        ...

    @cached(...)
    @staticmethod
    def test2(params):
        ...

Editor might show an error (if type checking is enabled) or might not correctly infer the return value (in this case, just specify what the function will return), but the code works. I'll fix this issue soon.

[rdong8]

Note that I wasn't able to get it working with the decorators in that order. I had to have classmethod on the outside and cached on the inside

[awolverp]

Why? I think there's no way to use classmethod on the outside; does it work? I didnt try that.

I think I have to change the decorators structure

[rdong8]

This is what happens for me:

import cachebox

class C:
    @cachebox.cached(None)
    @classmethod
    def f(cls, x: int) -> int:
        return x

print(C.f(1))
print(C.f(2))

Result:

{
	"name": "TypeError",
	"message": "'classmethod' object is not callable",
	"stack": "---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[11], line 9
      4     @cachebox.cached(None)
      5     @classmethod
      6     def f(cls, x: int) -> int:
      7         return x
----> 9 print(C.f(1))
     10 print(C.f(2))

File ~/Projects/mach-client-py/.venv/lib64/python3.13/site-packages/cachebox/utils.py:259, in _cached_wrapper.__call__(self, *args, **kwds)
    256 except KeyError:
    257     self._misses += 1
--> 259 result = self.func(*args, **kwds)
    261 if self.callback is not None:
    262     self.callback(EVENT_MISS, key, result)

TypeError: 'classmethod' object is not callable"
}

[awolverp]

I'll change decorators structure today and write about staticmethod and classmethod in README

[rdong8]

Also, how do we handle default arguments in key_maker?

[awolverp]

The key maker doesn't receive the default values of parameters

def key(args, kwargs):
    print(args, kwargs)
    return cachebox.make_hash_key(args, kwargs)

@cachebox.cached(None, key_maker=key)
def func(a = 0) -> int:
    pass

func(1) # (1,) {}
func(a=5) # () {'a': 5}
func() # () {}