Quality of life improvements to term search
Basically two things:
- Allow optionally disabling "borrow checking" restrictions on term search code assists. Sometimes it is better to get invalid suggestions and fix borrow checking issues later...
- Remove explicit generics in generated expressions. I find it quite rare that one writes `None::<T>` instead of `None`.
Simplify some term search tactics
Working on the paper `@phijor` found that "Data constructor" tactic could be simplified quite a bit by running it only in the backwards direction. With n+1 rounds it has same coverage as previous implementation in n rounds, however the tactic it self is more simple and also potentially faster as there is less to do.
In a nutshell the idea is to only work with types in the wish-list rather than with any types.
Turns out it is quite a bit faster:
Before:
```
ripgrep:
Tail Expr syntactic hits: 238/1692 (14%)
Tail Exprs found: 1223/1692 (72%)
Term search avg time: 15ms
nalgebra:
Tail Expr syntactic hits: 125/3001 (4%)
Tail Exprs found: 2143/3001 (71%)
Term search avg time: 849ms
```
After
````
ripgrep:
Tail Expr syntactic hits: 246/1692 (14%)
Tail Exprs found: 1209/1692 (71%)
Term search avg time: 8ms
nalgebra:
Tail Expr syntactic hits: 125/3001 (4%)
Tail Exprs found: 2028/3001 (67%)
Term search avg time: 305ms
````
_Also removed niche optimization of removing scope defs from the search space as this wasn't helping much anyway and made code a bit more complex._
Filter builtin macro expansion
This PR adds a filter on the types of built in macros that are allowed to be expanded.
Currently, This list of allowed macros contains, `stringify, cfg, core_panic, std_panic, concat, concat_bytes, include, include_str, include_bytes, env` and `option_env`.
Fixes#14177
Add `Function::fn_ptr_type(…)` for obtaining name-erased function type
The use case of this function if being able to group functions by their function ptr type.
cc `@flodiebold`
When viewing traces, it's slightly confusing when the span name doesn't
match the function name. Ensure the names are consistent.
(It might be worth moving most of these to use #[tracing::instrument]
so the name can never go stale. @davidbarsky suggested that is marginally
slower, so I've just done the simple change here.)
feature: Make generate function assist generate a function as a constructor if the generated function has the name "new" and is an asscociated function.
close#17050
This PR makes `generate function assist` generate a function as a constructor if the generated function has the name "new" and is an asscociated function.
If the asscociate type is a record struct, it generates the constructor like this.
```rust
impl Foo {
fn new() -> Self {
Self { field_1: todo!(), field_2: todo!() }
}
}
```
If the asscociate type is a tuple struct, it generates the constructor like this.
```rust
impl Foo {
fn new() -> Self {
Self(todo!(), todo!())
}
}
```
If the asscociate type is a unit struct, it generates the constructor like this.
```rust
impl Foo {
fn new() -> Self {
Self
}
}
```
If the asscociate type is another adt, it generates the constructor like this.
```rust
impl Foo {
fn new() -> Self {
todo!()
}
}
```
Support hovering limits for adts
Fix#17009
1. Currently, r-a supports limiting the number of struct fields displayed when hovering. This PR extends it to support enum variants and union fields. Since the display of these three (ADTs) is similar, this PR extends 'hover_show_structFields' to 'hover_show_adtFieldsOrVariants'.
2. This PR also resolved the problem that the layout of ADT was not restricted by display limitations when hovering on the Self type.
3. Additionally, this PR changes the default value of display limitations to `10` (instead of the original `null`), which helps users discover this feature.
