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authorcynecx <[email protected]>2021-05-30 17:37:02 +0100
committercynecx <[email protected]>2021-05-30 18:21:08 +0100
commit51cbcc53468a4f9fbeae8b11f1b1b0f09a9d3454 (patch)
treec501ce084b291fdc28dc99b534130a794b08d649 /crates
parentf1d163ba51b7a06e2e34ea2b27c4c948a0ff2320 (diff)
hir_ty: don't pass where clauses of associated types down to chalk (temp. fix #9052)
Diffstat (limited to 'crates')
-rw-r--r--crates/hir_ty/src/chalk_db.rs8
-rw-r--r--crates/hir_ty/src/tests/traits.rs31
2 files changed, 28 insertions, 11 deletions
diff --git a/crates/hir_ty/src/chalk_db.rs b/crates/hir_ty/src/chalk_db.rs
index b108fd559..4e042bf42 100644
--- a/crates/hir_ty/src/chalk_db.rs
+++ b/crates/hir_ty/src/chalk_db.rs
@@ -383,7 +383,7 @@ pub(crate) fn associated_ty_data_query(
383 // Lower bounds -- we could/should maybe move this to a separate query in `lower` 383 // Lower bounds -- we could/should maybe move this to a separate query in `lower`
384 let type_alias_data = db.type_alias_data(type_alias); 384 let type_alias_data = db.type_alias_data(type_alias);
385 let generic_params = generics(db.upcast(), type_alias.into()); 385 let generic_params = generics(db.upcast(), type_alias.into());
386 let bound_vars = generic_params.bound_vars_subst(DebruijnIndex::INNERMOST); 386 // let bound_vars = generic_params.bound_vars_subst(DebruijnIndex::INNERMOST);
387 let resolver = hir_def::resolver::HasResolver::resolver(type_alias, db.upcast()); 387 let resolver = hir_def::resolver::HasResolver::resolver(type_alias, db.upcast());
388 let ctx = crate::TyLoweringContext::new(db, &resolver) 388 let ctx = crate::TyLoweringContext::new(db, &resolver)
389 .with_type_param_mode(crate::lower::TypeParamLoweringMode::Variable); 389 .with_type_param_mode(crate::lower::TypeParamLoweringMode::Variable);
@@ -396,8 +396,10 @@ pub(crate) fn associated_ty_data_query(
396 .filter_map(|pred| generic_predicate_to_inline_bound(db, &pred, &self_ty)) 396 .filter_map(|pred| generic_predicate_to_inline_bound(db, &pred, &self_ty))
397 .collect(); 397 .collect();
398 398
399 let where_clauses = convert_where_clauses(db, type_alias.into(), &bound_vars); 399 // FIXME: Re-enable where clauses on associated types when an upstream chalk bug is fixed.
400 let bound_data = rust_ir::AssociatedTyDatumBound { bounds, where_clauses }; 400 // (rust-analyzer#9052)
401 // let where_clauses = convert_where_clauses(db, type_alias.into(), &bound_vars);
402 let bound_data = rust_ir::AssociatedTyDatumBound { bounds, where_clauses: vec![] };
401 let datum = AssociatedTyDatum { 403 let datum = AssociatedTyDatum {
402 trait_id: to_chalk_trait_id(trait_), 404 trait_id: to_chalk_trait_id(trait_),
403 id, 405 id,
diff --git a/crates/hir_ty/src/tests/traits.rs b/crates/hir_ty/src/tests/traits.rs
index 7c0ff2170..49add4ab9 100644
--- a/crates/hir_ty/src/tests/traits.rs
+++ b/crates/hir_ty/src/tests/traits.rs
@@ -161,7 +161,7 @@ mod result {
161} 161}
162 162
163#[test] 163#[test]
164fn infer_tryv2() { 164fn infer_try_trait_v2() {
165 check_types( 165 check_types(
166 r#" 166 r#"
167//- /main.rs crate:main deps:core 167//- /main.rs crate:main deps:core
@@ -172,26 +172,41 @@ fn test() {
172} //^ i32 172} //^ i32
173 173
174//- /core.rs crate:core 174//- /core.rs crate:core
175#[prelude_import] use ops::*;
176mod ops { 175mod ops {
177 trait Try { 176 mod try_trait {
178 type Output; 177 pub trait Try: FromResidual {
179 type Residual; 178 type Output;
179 type Residual;
180 }
181 pub trait FromResidual<R = <Self as Try>::Residual> {}
180 } 182 }
183
184 pub use self::try_trait::FromResidual;
185 pub use self::try_trait::Try;
186}
187
188mov convert {
189 pub trait From<T> {}
190 impl<T> From<T> for T {}
181} 191}
182 192
183#[prelude_import] use result::*; 193#[prelude_import] use result::*;
184mod result { 194mod result {
185 enum Infallible {} 195 use crate::convert::From;
186 enum Result<O, E> { 196 use crate::ops::{Try, FromResidual};
197
198 pub enum Infallible {}
199 pub enum Result<O, E> {
187 Ok(O), 200 Ok(O),
188 Err(E) 201 Err(E)
189 } 202 }
190 203
191 impl<O, E> crate::ops::Try for Result<O, E> { 204 impl<O, E> Try for Result<O, E> {
192 type Output = O; 205 type Output = O;
193 type Error = Result<Infallible, E>; 206 type Error = Result<Infallible, E>;
194 } 207 }
208
209 impl<T, E, F: From<E>> FromResidual<Result<Infallible, E>> for Result<T, F> {}
195} 210}
196"#, 211"#,
197 ); 212 );