determining qubit vs result types for pointers

[qci-amos]

Is your feature request related to a problem? Please describe.
With pyqir 0.12 I now need to find an alternative to is_qubit_type and is_result_type because I need to know which pointer type it is.

Describe the solution you had in mind
ChatGPT recommends that I do something like this:

class PtrRole(Enum):
    QUBIT = "qubit"
    RESULT = "result"


QIS_PTR_ROLES: dict[str, dict[int, PtrRole]] = {
    "__quantum__qis__h__body": {0: PtrRole.QUBIT},
    "__quantum__qis__x__body": {0: PtrRole.QUBIT},
    "__quantum__qis__y__body": {0: PtrRole.QUBIT},
    "__quantum__qis__z__body": {0: PtrRole.QUBIT},
    "__quantum__qis__s__body": {0: PtrRole.QUBIT},
    "__quantum__qis__s__adj": {0: PtrRole.QUBIT},
    "__quantum__qis__t__body": {0: PtrRole.QUBIT},
    "__quantum__qis__t__adj": {0: PtrRole.QUBIT},
    "__quantum__qis__reset__body": {0: PtrRole.QUBIT},

    "__quantum__qis__cnot__body": {0: PtrRole.QUBIT, 1: PtrRole.QUBIT},
    "__quantum__qis__cz__body": {0: PtrRole.QUBIT, 1: PtrRole.QUBIT},
    "__quantum__qis__swap__body": {0: PtrRole.QUBIT, 1: PtrRole.QUBIT},
    "__quantum__qis__ccx__body": {
        0: PtrRole.QUBIT,
        1: PtrRole.QUBIT,
        2: PtrRole.QUBIT,
    },

    "__quantum__qis__rx__body": {1: PtrRole.QUBIT},
    "__quantum__qis__ry__body": {1: PtrRole.QUBIT},
    "__quantum__qis__rz__body": {1: PtrRole.QUBIT},

    # This is the important mixed case.
    "__quantum__qis__mz__body": {
        0: PtrRole.QUBIT,
        1: PtrRole.RESULT,
    },

    # Include this if your input QIR uses it.
    "__quantum__qis__read_result__body": {
        0: PtrRole.RESULT,
    },
}

which I could do easily enough.

My question though is whether this sort of logic belongs in pyqir instead of in my code.

[qartik]

I need to know which pointer type it is.

Why do you need to know the pointer type?

As your code sample above suggests, it can be inferred from the type signature of each of the __quantum__qis functions in client code. Since there's no defined QIS for QIR, pyqir may not be able to do that reliably for all instructions.