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Merge #1408

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1408: Associated type basics & Deref support r=matklad a=flodiebold

This adds the necessary Chalk integration to handle associated types and uses it to implement support for `Deref` in the `*` operator and autoderef; so e.g. dot completions through an `Arc` work now.

It doesn't yet implement resolution of associated types in paths, though. Also, there's a big FIXME about handling variables in the solution we get from Chalk correctly.

Co-authored-by: Florian Diebold <flodiebold@gmail.com>
This commit is contained in:
bors[bot] 2019-06-16 12:00:41 +00:00
commit b81caed43f
19 changed files with 455 additions and 71 deletions
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2
crates/ra_ide_api/src/completion/complete_dot.rs
View file

@ -15,7 +15,7 @@ pub(super) fn complete_dot(acc: &mut Completions, ctx: &CompletionContext) {
}
fn complete_fields(acc: &mut Completions, ctx: &CompletionContext, receiver: Ty) {
for receiver in receiver.autoderef(ctx.db) {
for receiver in ctx.analyzer.autoderef(ctx.db, receiver) {
if let Ty::Apply(a_ty) = receiver {
match a_ty.ctor {
TypeCtor::Adt(AdtDef::Struct(s)) => {

2
crates/ra_ide_api/src/goto_type_definition.rs
View file

@ -30,7 +30,7 @@ pub(crate) fn goto_type_definition(
return None;
};
let adt_def = ty.autoderef(db).find_map(|ty| ty.as_adt().map(|adt| adt.0))?;
let adt_def = analyzer.autoderef(db, ty).find_map(|ty| ty.as_adt().map(|adt| adt.0))?;
let nav = NavigationTarget::from_adt_def(db, adt_def);
Some(RangeInfo::new(node.range(), vec![nav]))