fix: Insert spaces when inlining a function defined in a macro.
(partially) fixes#12860.
This PR (only) addresses the whitespace issue when inlining functions defined in macros.
Additionally, the indentation/spacing is not ideal, but works, e.g.
```rs
macro_rules! define_function {
() => { fn test_function_macro() {
if let Some(3) = 3i32.checked_add(0) {
println!("3 + 0 == 3");
}
} };
}
define_function!();
fn main() {
test_function_macro();
}
// previously became
// ...
fn main() {
ifletSome(3)=3i32.checked_add(0){println!("3 + 0 == 3");};
}
// now becomes
// ...
fn main() {
if let Some(3) = 3i32.checked_add(0){
println!("3 + 0 == 3");
};
}
```
The `self` -> `this` problem[^this] is (probably?) a separate problem that I am also looking into.
[^this]: As mentioned in [my comment on the above issue](https://github.com/rust-lang/rust-analyzer/issues/12860#issuecomment-1193231766), inlining a method defined in a macro does not properly replace `self` with the new local `this`.
c2eebd7a50