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Generalize reborrow hints as adjustment hints

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This commit is contained in:
Lukas Wirth 2022-11-04 17:11:15 +01:00
parent cd2603299c
commit c98fc537e6
9 changed files with 182 additions and 78 deletions
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16
crates/hir/src/source_analyzer.rs
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@ -38,8 +38,7 @@ use hir_ty::{
UnsafeExpr,
},
method_resolution::{self, lang_names_for_bin_op},
Adjust, Adjustment, AutoBorrow, InferenceResult, Interner, Substitution, Ty, TyExt, TyKind,
TyLoweringContext,
Adjustment, InferenceResult, Interner, Substitution, Ty, TyExt, TyKind, TyLoweringContext,
};
use itertools::Itertools;
use smallvec::SmallVec;
@ -156,21 +155,14 @@ impl SourceAnalyzer {
Some(res)
}
pub(crate) fn is_implicit_reborrow(
pub(crate) fn expr_adjustments(
&self,
db: &dyn HirDatabase,
expr: &ast::Expr,
) -> Option<Mutability> {
) -> Option<&[Adjustment]> {
let expr_id = self.expr_id(db, expr)?;
let infer = self.infer.as_ref()?;
let adjustments = infer.expr_adjustments.get(&expr_id)?;
adjustments.windows(2).find_map(|slice| match slice {
&[Adjustment {kind: Adjust::Deref(None), ..}, Adjustment {kind: Adjust::Borrow(AutoBorrow::Ref(m)), ..}] => Some(match m {
hir_ty::Mutability::Mut => Mutability::Mut,
hir_ty::Mutability::Not => Mutability::Shared,
}),
_ => None,
})
infer.expr_adjustments.get(&expr_id).map(|v| &**v)
}
pub(crate) fn type_of_expr(