71eb5400a3
feature: Add `destructure_struct_binding` Adds an assist for destructuring a struct in a binding (#8673). I saw that #13997 has been abandoned for a while, so I thought I'd give it a go. ## Example ```rust let foo = Foo { bar: 1, baz: 2 }; let bar2 = foo.bar; let baz2 = foo.baz; let foo2 = foo; let fizz = Fizz(1, 2); let buzz = fizz.0; ``` becomes ```rust let Foo { bar, baz } = Foo { bar: 1, baz: 2 }; let bar2 = bar; let baz2 = baz; let foo2 = todo!(); let Fizz(_0, _1) = Fizz(1, 2); let buzz = _0; ``` More examples in the tests. ## What is included? - [x] Destructure record, tuple, and unit struct bindings - [x] Edit field usages - [x] Non-exhaustive structs in foreign crates and private fields get hidden behind `..` - [x] Nested bindings - [x] Carry over `mut` and `ref mut` in nested bindings to fields, i.e. `let Foo { ref mut bar } = ...` becomes `let Foo { bar: Bar { baz: ref mut baz } } = ...` - [x] Attempt to resolve collisions with other names in the scope - [x] If the binding is to a reference, field usages are dereferenced if required - [x] Use shorthand notation if possible ## Known limitations - `let foo = Foo { bar: 1 }; foo;` currently results in `let Foo { bar } = Foo { bar: 1 }; todo!();` instead of reassembling the struct. This requires user intervention. - Unused fields are not currently omitted. I thought that this is more ergonomic, as there already is a quick fix action for adding `: _` to unused field patterns. |
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