SerializationStragey of Dialect does not work correctly

[QSHolzner]

• mashumaro version: 3.3
• Python version: 3.11
• Operating System: Linux

Description

We ues a Dialect with special Handling for the date Type. We don't want to get it serialized to string. Therefore we use the
pass_throug serialization strategy. But this strategy is only used for the first appeareance of the configured typ.

What I Did

import datetime
from dataclasses import dataclass

from mashumaro import DataClassDictMixin, pass_through
from mashumaro.config import ADD_DIALECT_SUPPORT, BaseConfig
from mashumaro.dialect import Dialect


class MyDialect(Dialect):
    serialization_strategy = {
        datetime.date: pass_through,
    }


class MyModel(DataClassDictMixin):
    class Config(BaseConfig):
        debug = False
        dialect = MyDialect
        code_generation_options = [ADD_DIALECT_SUPPORT]


@dataclass()
class ModelA(MyModel):
    from_date: datetime.date
    to_date: datetime.date


m = ModelA(datetime.date.today(), datetime.date.today())
print(m.to_dict())

Output: {'from_date': datetime.date(2023, 1, 10), 'to_date': '2023-01-10'}

Expected Output: : {'from_date': datetime.date(2023, 1, 10), 'to_date': datetime.date(2023, 1, 10)}

I debugged into the mashumaro sourcecode and found out that in builder.py CodeBuilder you use an lru_cache() decorator for this generator function.

    @lru_cache()
    @typing.no_type_check
    def __iter_serialization_strategies(
        self, ftype: typing.Type
    ) -> typing.Iterator[SerializationStrategyValueType]:

In this case the cache does not hold an SerializationStrategyValueType Object, which is returend in subsequent calls. It holds an generator_function object. So each corresponding call of __iter_serialization_strategies with the same type parameter tries to iterate the generator_object. If this has reached its end no further value is returned.
In our case this means that the pass_through serialization strategy for date is only used for the fist time __iter_serialization_strategies is called. In all other cases the default serialization strategy for date is used - which means it is converted to iso date string.

If I omit the lru_cache decorator from __iter_serialization_strategies it works as expected.
Could you please check this.

Thank You

[Fatal1ty]

It's a duplicate of #93. I published 3.3.1 version an hour ago that fixed this :)