Commit Graph

4 Commits

Author SHA1 Message Date
Esteban Küber
385eea1d46 Consider methods from traits when suggesting typos
Do not provide a structured suggestion when the arguments don't match.

```
error[E0599]: no method named `test_mut` found for struct `Vec<{integer}>` in the current scope
  --> $DIR/auto-ref-slice-plus-ref.rs:7:7
   |
LL |     a.test_mut();
   |       ^^^^^^^^
   |
   = help: items from traits can only be used if the trait is implemented and in scope
note: `MyIter` defines an item `test_mut`, perhaps you need to implement it
  --> $DIR/auto-ref-slice-plus-ref.rs:14:1
   |
LL | trait MyIter {
   | ^^^^^^^^^^^^
help: there is a method `get_mut` with a similar name, but with different arguments
  --> $SRC_DIR/core/src/slice/mod.rs:LL:COL
```

Consider methods beyond inherent ones when suggesting typos.

```
error[E0599]: no method named `owned` found for reference `&dyn Foo` in the current scope
  --> $DIR/object-pointer-types.rs:11:7
   |
LL |     fn owned(self: Box<Self>);
   |                    --------- the method might not be found because of this arbitrary self type
...
LL |     x.owned();
   |       ^^^^^ help: there is a method with a similar name: `to_owned`
```

Fix #101013.
2024-02-22 18:04:55 +00:00
Esteban Küber
d30dfb0af7 Provide more and more accurate suggestions when calling the wrong method
```
error[E0308]: mismatched types
  --> $DIR/rustc_confusables_std_cases.rs:20:14
   |
LL |     x.append(42);
   |       ------ ^^ expected `&mut Vec<{integer}>`, found integer
   |       |
   |       arguments to this method are incorrect
   |
   = note: expected mutable reference `&mut Vec<{integer}>`
                           found type `{integer}`
note: method defined here
  --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
help: you might have meant to use `push`
   |
LL |     x.push(42);
   |       ~~~~
```
2024-02-22 18:04:55 +00:00
Esteban Küber
0e89465672 On type error of method call arguments, look at confusables for suggestion 2024-02-22 18:04:55 +00:00
Esteban Küber
e5b3c7ef14 Add rustc_confusables annotations to some stdlib APIs
Help with common API confusion, like asking for `push` when the data structure really has `append`.

```
error[E0599]: no method named `size` found for struct `Vec<{integer}>` in the current scope
  --> $DIR/rustc_confusables_std_cases.rs:17:7
   |
LL |     x.size();
   |       ^^^^
   |
help: you might have meant to use `len`
   |
LL |     x.len();
   |       ~~~
help: there is a method with a similar name
   |
LL |     x.resize();
   |       ~~~~~~
```

#59450
2024-02-22 18:04:55 +00:00