Hey,

Is there any way to create a macro that allows a Some<T> or T as input?

It's for creating a Span struct that I'm using:

rust struct Span { line: usize, column: usize, file_path: Option<String>, }

...and I have the following macro:

```rust macro_rules! span { ($line:expr, $column:expr) => { Span { line: $line, column: $column file_path: None, } };

($line:expr, $column:expr, $file_path: expr) => { Span { line: $line, column: $column file_path: Some($file_path.to_string()), } }; } ```

...which allows me to do this:

rust let foo = span!(1, 1); let bar = span!(1, 1, "file.txt");

However, sometimes I don't want to pass in the file path directly but through a variable that is Option<String>. To do this, I always have to match the variable:

```rust let file_path = Some("file.txt");

let foo = match file_path { Some(file_path) => span!(1, 1, file_path), None => span!(1, 1), } ```

Is there a way which allows me to directly use span!(1, 1, file_path) where file_path could be "file.txt", Some("file.txt") or None?

Thanks in advance!

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