Another peels example

example.py

class EducationFlags(FlagConverter):
    ELEMENTARY_COMPLETED = 1
    MIDDLE_SCHOOL_COMPLETED = 2
    HIGHSCHOOL_COMPLETED = 4
    COLLEGE_COMPLETED = 8
    BACHELOR = 16
    MASTER = 32
    DOCTOR = 64


person = Peel(
    Segment("name_len", 1, "I"),
    Segment("name", "name_len", "U"),
    Segment("age", 1, "I"),
    Segment("education", 1, EducationFlags)
)

no_pet = Segment("no_pet", 0, "-")
cat_peel = Peel(
    Segment("name_len", 1, "I"),
    Segment("name", "name_len", "U"),
    Segment("age", 1, "I")
)
cat = Segment("cat", 1, cat_peel)
dog_peel = Peel(
    Segment("name_len", 1, "I"),
    Segment("name", "name_len", "U"),
    Segment("age", 1, "I"),
    Segment("barks", 1, "B")
)
dog = Segment("dog", 1, dog_peel)

household = Peel(
    Segment("address_len", 1, "I"),
    Segment("address", "address_len", "U"),
    Segment("family_size", 1, "I"),
    Segment("family", "family_size", person),
    Segment("pet_id", 1, "I"),
    SwitchSegment("pet_id", {0: no_pet, 1: cat, 2: dog})
)

data = household.generate(
    address_len=13,
    address="123 Hill Road",
    family_size=2,
    family=[
        {"name_len": 3, "name": "Bob", "age": 29, "education": EducationFlags(7)},
        {"name_len": 4, "name": "Mary", "age": 30, "education": EducationFlags(47)}
    ],
    pet_id=2,
    dog=[{"name_len": 5, "name": "Doggy", "age": 3, "barks": False}]
)

print(data)
stream = BytesIO(data)
stream.read(0)
print(
    household.parse_stream(stream)
)