Too many super keywords included

1

I have in my file cdemodc_c.rs, at the top of it line:

//cdemodc_c.rs
use super::bindings_included::*;

The structure of my project is:

Toomanysuper
Toomanysuper269×177 5.69 KB

I'm getting error:

Toomanysuper_1
Toomanysuper_1651×124 9.98 KB

Basically, the problem is that in the cdemodc_c.rs is main function which I cannot start debugging.
This is the content of Cargo.toml

Toomanysuper_2
Toomanysuper_2380×201 9.21 KB

So, to summarize:

  1. How to work around the fact that clearly there is file bindings_included yet system either doesn't see it (when I use create instead of super) or tells me that I use super too many times even though I only have one super keyword
  2. How to tell the system that the main is in cdemodc_c and use this main not the main functin from main file that is used by the lib

Any help appreciated

2

cdemodc_c and bindings_included are in the project's root (src/). At this level, there is no super package. Try using crate:: instead.

3

If I use crate I'm getting:

error[E0432]: unresolved import `crate::bindings_included`
 --> src/cdemodc_c.rs:1:12
  |
1 | use crate::bindings_included::*;
  |            ^^^^^^^^^^^^^^^^^ could not find `bindings_included` in the crate root
4

Does lib.rs contain mod bindings_included;?

5

Yes, it does

6

... and also mod cdemodc_c;?

7

That's correct

8

I see now that you listed it as a binary.
Then it may not be considered part of the library crate and you need to specify the crate's explicit name: my_app_rs::.

In any case, if this is a binary module, you should not put it into the library crate's src/ dir, but into a separate bin/ dir.

9

Let me check

10

That doesn't work, I'll put that code into bin folder and see how it goes. Thank you for your help. I'll let you know how it went.

11

Should that bin dir be in src or outside of it?

12

Inside it.

1 Like
13

Thanks

14

Hi, unfortunately that doesn't work either:

Toomanysuper_3
Toomanysuper_3281×201 7.16 KB

when I have crate::bindings...
I'm getting:
Toomanysuper_4
Toomanysuper_4726×127 10.3 KB

when I have super::bindings...
I'm getting:
Toomanysuper_5
Toomanysuper_5672×125 10.6 KB

15

Is the mod bindings_included in lib.rs marked as pub?

1 Like
16

Hi, this solved the issue.
Thanks
So to summarize:
Adding pub to mod bindings_included.rs was all that was required.
And that is fine.
But still, what about the bin/ folder? Is it still required? Tbh, the error messages were confusing at best.

17

I believe using my_app_rs:: is also required for this to work. Basically you need lib.rs to declare (with mod) and make visible (with pub) the bindings_included module. Other binary crates will then see the lib.rs as another crate named my_app_rs which you can import from (but like other third party crates you can only import public stuff!)

The bin/ folder is just a convention, it is not needed, but generally appreciated when people look at your code.

I think working with multiple crates in a single package is the confusing part. You normally would expect all the files in src to be in the same crate and thus "know" each others, but actually they are in different crates (each file in [[bin]] is its own binary crate, plus lib.rs is a separate library crate).

Add to this the fact that suggestions about changes in other crates are usually avoided because it would be very confusing to suggest a user to make changes in a third party crate.

4 Likes
18

Thank you very much for your help and your time.

19

Yes, you are correct, I also had to add my_app::
Thank you very much for your help in solving that issue for me.

2 Likes