Converting between types using adaptix parsers

converter.py

from dataclasses import dataclass

from adaptix import Retort, Chain, loader, dumper


@dataclass
class A:
    field: str


class CustomA:
    def __init__(self, **kwargs):
        self.field = kwargs.get("field")

    def __eq__(self, other):
        return type(other) == type(self) and self.field == other.field


class MyDict:
    def __init__(self, obj):
        self.obj = obj

    def __getitem__(self, name):
        return getattr(self.obj, name)


retort = Retort(
    recipe=[
        loader(A, MyDict, Chain.FIRST),
        dumper(A, lambda x: CustomA(**x), Chain.LAST)
    ]
)

a = A(field="value")
ca = CustomA(field="value")
assert ca == retort.dump(a)
assert a == retort.load(ca, A)