LSP: add argument(s) to function

[nnuuvv]

I'm used to having a code action to add a new argument to a function based on usage.

i.e.:

fn wibble() {
            v - triggering "add argument to function" here
  wobble("wobble")
}

fn wobble() {
  todo
}

would change the code to this:

fn wibble() {
  wobble("wobble")
}

fn wobble(wobble: String) {
  todo
}

This, in my experience, is especially helpful when scaffolding mostly empty functions early in a new project.
As it allows quickly adding new arguments to a function call.

So instead of having to

• goto definition
• manually add function argument
• go back

I can just add argument to function and keep doing what i was doing and deal with it later.

Ideally this would work with multiple arguments at a time as well.

[nnuuvv]

alternative name: add argument to definition
or update definition

[lpil]

Hello!

When would this action be available?

What would happen when there already is some arguments for the function? How would it decide where to put them?

What would happen to all the other references to this function in the codebase?

So instead of having to

goto definition
manually add function argument
go back

I can just add argument to function and keep doing what i was doing and deal with it later.

Isn't this the same amount of work except the order in which the actions are performed at the same?

1. add argument to call site
2. run code action
3. continue editing
4. return to that call site
5. go to definition
6. rename argument
7. edit implementation

vs

1. goto definition
2. add parameter
3. edit implementation
4. go back
5. add argument to call site
6. continue editing