I’m interested in adding a rule to coverity checkers and want to consult if it’s feasible and what is needed to do to achieve.
I’m talking about C programming, and I want to restrict the access to arrays using a defined enumerator – and not any integer index.

For example I have two arrays: `oranges` and `apples` of sizes 5 and 10 cells accordingly.

In order to avoid misuse of the arrays, I want to define two enums (or typedefs if needed), one for `oranges` and one for `apples`:

```
Enum apples {
    A0 = 0,
    A1 = 1,
    A2 = 2,
    A3 = 3,
    A4 = 4,
}

Enum oranges {
    O0 = 0,
    O1 = 1,
    O2 = 2,
    O3 = 3,
    O4 = 4,
    O5 = 5,
    O6 = 6,
    O7 = 7,
    O8 = 8,
    O9 = 9,
}

```

And I want to add a rule to coverity that checks each access to these arrays.
For example:

```
Apples[A4];  //success

Apples[O0]; // coverity error

Apples[2]; // coverity error

```

Is it possible to add such rule ?