bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir_ty/src/lower.rs')
-rw-r--r--crates/hir_ty/src/lower.rs51
1 files changed, 30 insertions, 21 deletions
diff --git a/crates/hir_ty/src/lower.rs b/crates/hir_ty/src/lower.rs
index 81134f666b..6f624ce7fb 100644
--- a/crates/hir_ty/src/lower.rs
+++ b/crates/hir_ty/src/lower.rs
@@ -37,11 +37,12 @@ use smallvec::SmallVec;
use stdx::{impl_from, never};
use syntax::{ast, SmolStr};
-use crate::consteval::{path_to_const, unknown_const_as_generic, unknown_const_usize, usize_const};
+use crate::consteval::{
+ intern_scalar_const, path_to_const, unknown_const, unknown_const_as_generic,
+};
use crate::utils::Generics;
use crate::{all_super_traits, make_binders, Const, GenericArgData, ParamKind};
use crate::{
- consteval,
db::HirDatabase,
mapping::ToChalk,
static_lifetime, to_assoc_type_id, to_chalk_trait_id, to_placeholder_idx,
@@ -202,6 +203,7 @@ impl<'a> TyLoweringContext<'a> {
let const_len = const_or_path_to_chalk(
self.db,
self.resolver,
+ TyBuilder::usize(),
len,
self.type_param_mode,
|| self.generics(),
@@ -677,12 +679,13 @@ impl<'a> TyLoweringContext<'a> {
parent_params + self_params + type_params + const_params + impl_trait_params;
let ty_error = GenericArgData::Ty(TyKind::Error.intern(Interner)).intern(Interner);
- let const_error = GenericArgData::Const(consteval::usize_const(None)).intern(Interner);
- for (_, data) in def_generics.iter().take(parent_params) {
- match data {
- TypeOrConstParamData::TypeParamData(_) => substs.push(ty_error.clone()),
- TypeOrConstParamData::ConstParamData(_) => substs.push(const_error.clone()),
+ for eid in def_generics.iter_id().take(parent_params) {
+ match eid {
+ Either::Left(_) => substs.push(ty_error.clone()),
+ Either::Right(x) => {
+ substs.push(unknown_const_as_generic(self.db.const_param_ty(x)))
+ }
}
}
@@ -722,10 +725,11 @@ impl<'a> TyLoweringContext<'a> {
arg,
&mut (),
|_, type_ref| self.lower_ty(type_ref),
- |_, c| {
+ |_, c, ty| {
const_or_path_to_chalk(
self.db,
&self.resolver,
+ ty,
c,
self.type_param_mode,
|| self.generics(),
@@ -759,10 +763,12 @@ impl<'a> TyLoweringContext<'a> {
// add placeholders for args that were not provided
// FIXME: emit diagnostics in contexts where this is not allowed
- for (_, data) in def_generics.iter().skip(substs.len()) {
- match data {
- TypeOrConstParamData::TypeParamData(_) => substs.push(ty_error.clone()),
- TypeOrConstParamData::ConstParamData(_) => substs.push(const_error.clone()),
+ for eid in def_generics.iter_id().skip(substs.len()) {
+ match eid {
+ Either::Left(_) => substs.push(ty_error.clone()),
+ Either::Right(x) => {
+ substs.push(unknown_const_as_generic(self.db.const_param_ty(x)))
+ }
}
}
assert_eq!(substs.len(), total_len);
@@ -1642,7 +1648,7 @@ pub(crate) fn generic_arg_to_chalk<'a, T>(
arg: &'a GenericArg,
this: &mut T,
for_type: impl FnOnce(&mut T, &TypeRef) -> Ty + 'a,
- for_const: impl FnOnce(&mut T, &ConstScalarOrPath) -> Const + 'a,
+ for_const: impl FnOnce(&mut T, &ConstScalarOrPath, Ty) -> Const + 'a,
) -> Option<crate::GenericArg> {
let kind = match kind_id {
Either::Left(_) => ParamKind::Type,
@@ -1656,13 +1662,13 @@ pub(crate) fn generic_arg_to_chalk<'a, T>(
let ty = for_type(this, type_ref);
GenericArgData::Ty(ty).intern(Interner)
}
- (GenericArg::Const(c), ParamKind::Const(_)) => {
- GenericArgData::Const(for_const(this, c)).intern(Interner)
+ (GenericArg::Const(c), ParamKind::Const(c_ty)) => {
+ GenericArgData::Const(for_const(this, c, c_ty)).intern(Interner)
}
(GenericArg::Const(_), ParamKind::Type) => {
GenericArgData::Ty(TyKind::Error.intern(Interner)).intern(Interner)
}
- (GenericArg::Type(t), ParamKind::Const(ty)) => {
+ (GenericArg::Type(t), ParamKind::Const(c_ty)) => {
// We want to recover simple idents, which parser detects them
// as types. Maybe here is not the best place to do it, but
// it works.
@@ -1671,11 +1677,13 @@ pub(crate) fn generic_arg_to_chalk<'a, T>(
if p.kind == PathKind::Plain {
if let [n] = p.segments() {
let c = ConstScalarOrPath::Path(n.clone());
- return Some(GenericArgData::Const(for_const(this, &c)).intern(Interner));
+ return Some(
+ GenericArgData::Const(for_const(this, &c, c_ty)).intern(Interner),
+ );
}
}
}
- unknown_const_as_generic(ty)
+ unknown_const_as_generic(c_ty)
}
(GenericArg::Lifetime(_), _) => return None,
})
@@ -1684,17 +1692,18 @@ pub(crate) fn generic_arg_to_chalk<'a, T>(
pub(crate) fn const_or_path_to_chalk(
db: &dyn HirDatabase,
resolver: &Resolver,
+ expected_ty: Ty,
value: &ConstScalarOrPath,
mode: ParamLoweringMode,
args: impl FnOnce() -> Generics,
debruijn: DebruijnIndex,
) -> Const {
match value {
- ConstScalarOrPath::Scalar(s) => usize_const(s.as_usize()),
+ ConstScalarOrPath::Scalar(s) => intern_scalar_const(s.clone(), expected_ty),
ConstScalarOrPath::Path(n) => {
let path = ModPath::from_segments(PathKind::Plain, Some(n.clone()));
path_to_const(db, resolver, &path, mode, args, debruijn)
- .unwrap_or_else(|| unknown_const_usize())
+ .unwrap_or_else(|| unknown_const(expected_ty))
}
}
}
@@ -1716,7 +1725,7 @@ fn fallback_bound_vars<T: Fold<Interner> + HasInterner<Interner = Interner>>(
},
|ty, bound, binders| {
if bound.index >= num_vars_to_keep && bound.debruijn == DebruijnIndex::INNERMOST {
- consteval::unknown_const(ty.clone())
+ unknown_const(ty.clone())
} else {
bound.shifted_in_from(binders).to_const(Interner, ty)
}