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Add method resolution deref inference var test

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This commit is contained in:
Lukas Wirth 2024-03-05 13:05:57 +01:00
parent d21f88883b
commit c679482d7e
3 changed files with 30 additions and 16 deletions
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14
crates/hir-ty/src/infer/expr.rs
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@ -312,15 +312,13 @@ impl InferenceContext<'_> {
Expr::Call { callee, args, .. } => {
let callee_ty = self.infer_expr(*callee, &Expectation::none());
let mut derefs = Autoderef::new(&mut self.table, callee_ty.clone(), false);
let (res, derefed_callee) = 'b: {
// manual loop to be able to access `derefs.table`
while let Some((callee_deref_ty, _)) = derefs.next() {
let res = derefs.table.callable_sig(&callee_deref_ty, args.len());
if res.is_some() {
break 'b (res, callee_deref_ty);
}
let (res, derefed_callee) = loop {
let Some((callee_deref_ty, _)) = derefs.next() else {
break (None, callee_ty.clone());
};
if let Some(res) = derefs.table.callable_sig(&callee_deref_ty, args.len()) {
break (Some(res), callee_deref_ty);
}
(None, callee_ty.clone())
};
// if the function is unresolved, we use is_varargs=true to
// suppress the arg count diagnostic here