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Fix goto index_mut

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Shoyu Vanilla 2024-02-29 00:52:58 +09:00
parent 83f6dd14f8
commit bf23deecb3
1 changed files with 16 additions and 1 deletions
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17
crates/hir/src/source_analyzer.rs
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@ -420,7 +420,22 @@ impl SourceAnalyzer {
let base_ty = self.ty_of_expr(db, &index_expr.base()?)?;
let index_ty = self.ty_of_expr(db, &index_expr.index()?)?;
let (op_trait, op_fn) = self.lang_trait_fn(db, LangItem::Index, &name![index])?;
let (index_trait, index_fn) = self.lang_trait_fn(db, LangItem::Index, &name![index])?;
let (op_trait, op_fn) = self
.infer
.as_ref()
.and_then(|infer| {
let expr = self.expr_id(db, &index_expr.clone().into())?;
let (func, _) = infer.method_resolution(expr)?;
let (index_mut_trait, index_mut_fn) =
self.lang_trait_fn(db, LangItem::IndexMut, &name![index_mut])?;
if func == index_mut_fn {
Some((index_mut_trait, index_mut_fn))
} else {
None
}
})
.unwrap_or((index_trait, index_fn));
// HACK: subst for all methods coincides with that for their trait because the methods
// don't have any generic parameters, so we skip building another subst for the methods.
let substs = hir_ty::TyBuilder::subst_for_def(db, op_trait, None)