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-rw-r--r--crates/hir/src/display.rs2
-rw-r--r--crates/hir_def/src/data.rs4
-rw-r--r--crates/hir_def/src/generics.rs20
-rw-r--r--crates/hir_def/src/intern.rs2
-rw-r--r--crates/hir_def/src/item_tree.rs4
-rw-r--r--crates/hir_def/src/item_tree/lower.rs13
-rw-r--r--crates/hir_def/src/item_tree/pretty.rs4
-rw-r--r--crates/hir_def/src/path.rs9
-rw-r--r--crates/hir_def/src/path/lower.rs15
-rw-r--r--crates/hir_def/src/type_ref.rs14
-rw-r--r--crates/hir_ty/src/display.rs7
-rw-r--r--crates/hir_ty/src/lower.rs3
12 files changed, 59 insertions, 38 deletions
diff --git a/crates/hir/src/display.rs b/crates/hir/src/display.rs
index 508ac37c2..c5cf803fd 100644
--- a/crates/hir/src/display.rs
+++ b/crates/hir/src/display.rs
@@ -92,7 +92,7 @@ impl HirDisplay for Function {
92 &data.ret_type 92 &data.ret_type
93 } else { 93 } else {
94 match &*data.ret_type { 94 match &*data.ret_type {
95 TypeRef::ImplTrait(bounds) => match &bounds[0] { 95 TypeRef::ImplTrait(bounds) => match bounds[0].as_ref() {
96 TypeBound::Path(path) => { 96 TypeBound::Path(path) => {
97 path.segments().iter().last().unwrap().args_and_bindings.unwrap().bindings 97 path.segments().iter().last().unwrap().args_and_bindings.unwrap().bindings
98 [0] 98 [0]
diff --git a/crates/hir_def/src/data.rs b/crates/hir_def/src/data.rs
index 135a6698e..8bcac60ef 100644
--- a/crates/hir_def/src/data.rs
+++ b/crates/hir_def/src/data.rs
@@ -112,7 +112,7 @@ pub struct TypeAliasData {
112 pub visibility: RawVisibility, 112 pub visibility: RawVisibility,
113 pub is_extern: bool, 113 pub is_extern: bool,
114 /// Bounds restricting the type alias itself (eg. `type Ty: Bound;` in a trait or impl). 114 /// Bounds restricting the type alias itself (eg. `type Ty: Bound;` in a trait or impl).
115 pub bounds: Vec<TypeBound>, 115 pub bounds: Vec<Interned<TypeBound>>,
116} 116}
117 117
118impl TypeAliasData { 118impl TypeAliasData {
@@ -141,7 +141,7 @@ pub struct TraitData {
141 pub is_auto: bool, 141 pub is_auto: bool,
142 pub is_unsafe: bool, 142 pub is_unsafe: bool,
143 pub visibility: RawVisibility, 143 pub visibility: RawVisibility,
144 pub bounds: Box<[TypeBound]>, 144 pub bounds: Box<[Interned<TypeBound>]>,
145} 145}
146 146
147impl TraitData { 147impl TraitData {
diff --git a/crates/hir_def/src/generics.rs b/crates/hir_def/src/generics.rs
index de5acced8..44d22b918 100644
--- a/crates/hir_def/src/generics.rs
+++ b/crates/hir_def/src/generics.rs
@@ -68,9 +68,19 @@ pub struct GenericParams {
68/// associated type bindings like `Iterator<Item = u32>`. 68/// associated type bindings like `Iterator<Item = u32>`.
69#[derive(Clone, PartialEq, Eq, Debug, Hash)] 69#[derive(Clone, PartialEq, Eq, Debug, Hash)]
70pub enum WherePredicate { 70pub enum WherePredicate {
71 TypeBound { target: WherePredicateTypeTarget, bound: TypeBound }, 71 TypeBound {
72 Lifetime { target: LifetimeRef, bound: LifetimeRef }, 72 target: WherePredicateTypeTarget,
73 ForLifetime { lifetimes: Box<[Name]>, target: WherePredicateTypeTarget, bound: TypeBound }, 73 bound: Interned<TypeBound>,
74 },
75 Lifetime {
76 target: LifetimeRef,
77 bound: LifetimeRef,
78 },
79 ForLifetime {
80 lifetimes: Box<[Name]>,
81 target: WherePredicateTypeTarget,
82 bound: Interned<TypeBound>,
83 },
74} 84}
75 85
76#[derive(Clone, PartialEq, Eq, Debug, Hash)] 86#[derive(Clone, PartialEq, Eq, Debug, Hash)]
@@ -339,11 +349,11 @@ impl GenericParams {
339 Some(hrtb_lifetimes) => WherePredicate::ForLifetime { 349 Some(hrtb_lifetimes) => WherePredicate::ForLifetime {
340 lifetimes: hrtb_lifetimes.clone(), 350 lifetimes: hrtb_lifetimes.clone(),
341 target: WherePredicateTypeTarget::TypeRef(Interned::new(type_ref)), 351 target: WherePredicateTypeTarget::TypeRef(Interned::new(type_ref)),
342 bound, 352 bound: Interned::new(bound),
343 }, 353 },
344 None => WherePredicate::TypeBound { 354 None => WherePredicate::TypeBound {
345 target: WherePredicateTypeTarget::TypeRef(Interned::new(type_ref)), 355 target: WherePredicateTypeTarget::TypeRef(Interned::new(type_ref)),
346 bound, 356 bound: Interned::new(bound),
347 }, 357 },
348 }, 358 },
349 (Either::Right(lifetime), TypeBound::Lifetime(bound)) => { 359 (Either::Right(lifetime), TypeBound::Lifetime(bound)) => {
diff --git a/crates/hir_def/src/intern.rs b/crates/hir_def/src/intern.rs
index 5cc7f2df6..1189c9327 100644
--- a/crates/hir_def/src/intern.rs
+++ b/crates/hir_def/src/intern.rs
@@ -216,7 +216,9 @@ pub use crate::_impl_internable as impl_internable;
216impl_internable!( 216impl_internable!(
217 crate::type_ref::TypeRef, 217 crate::type_ref::TypeRef,
218 crate::type_ref::TraitRef, 218 crate::type_ref::TraitRef,
219 crate::type_ref::TypeBound,
219 crate::path::ModPath, 220 crate::path::ModPath,
221 crate::path::GenericArgs,
220 GenericParams, 222 GenericParams,
221 str, 223 str,
222); 224);
diff --git a/crates/hir_def/src/item_tree.rs b/crates/hir_def/src/item_tree.rs
index 4a5f44027..11767d100 100644
--- a/crates/hir_def/src/item_tree.rs
+++ b/crates/hir_def/src/item_tree.rs
@@ -644,7 +644,7 @@ pub struct Trait {
644 pub generic_params: Interned<GenericParams>, 644 pub generic_params: Interned<GenericParams>,
645 pub is_auto: bool, 645 pub is_auto: bool,
646 pub is_unsafe: bool, 646 pub is_unsafe: bool,
647 pub bounds: Box<[TypeBound]>, 647 pub bounds: Box<[Interned<TypeBound>]>,
648 pub items: Box<[AssocItem]>, 648 pub items: Box<[AssocItem]>,
649 pub ast_id: FileAstId<ast::Trait>, 649 pub ast_id: FileAstId<ast::Trait>,
650} 650}
@@ -664,7 +664,7 @@ pub struct TypeAlias {
664 pub name: Name, 664 pub name: Name,
665 pub visibility: RawVisibilityId, 665 pub visibility: RawVisibilityId,
666 /// Bounds on the type alias itself. Only valid in trait declarations, eg. `type Assoc: Copy;`. 666 /// Bounds on the type alias itself. Only valid in trait declarations, eg. `type Assoc: Copy;`.
667 pub bounds: Box<[TypeBound]>, 667 pub bounds: Box<[Interned<TypeBound>]>,
668 pub generic_params: Interned<GenericParams>, 668 pub generic_params: Interned<GenericParams>,
669 pub type_ref: Option<Interned<TypeRef>>, 669 pub type_ref: Option<Interned<TypeRef>>,
670 pub is_extern: bool, 670 pub is_extern: bool,
diff --git a/crates/hir_def/src/item_tree/lower.rs b/crates/hir_def/src/item_tree/lower.rs
index 91cf75371..b4389371f 100644
--- a/crates/hir_def/src/item_tree/lower.rs
+++ b/crates/hir_def/src/item_tree/lower.rs
@@ -384,7 +384,7 @@ impl<'a> Ctx<'a> {
384 384
385 let ret_type = if func.async_token().is_some() { 385 let ret_type = if func.async_token().is_some() {
386 let future_impl = desugar_future_path(ret_type); 386 let future_impl = desugar_future_path(ret_type);
387 let ty_bound = TypeBound::Path(future_impl); 387 let ty_bound = Interned::new(TypeBound::Path(future_impl));
388 TypeRef::ImplTrait(vec![ty_bound]) 388 TypeRef::ImplTrait(vec![ty_bound])
389 } else { 389 } else {
390 ret_type 390 ret_type
@@ -738,11 +738,12 @@ impl<'a> Ctx<'a> {
738 Interned::new(generics) 738 Interned::new(generics)
739 } 739 }
740 740
741 fn lower_type_bounds(&mut self, node: &impl ast::TypeBoundsOwner) -> Vec<TypeBound> { 741 fn lower_type_bounds(&mut self, node: &impl ast::TypeBoundsOwner) -> Vec<Interned<TypeBound>> {
742 match node.type_bound_list() { 742 match node.type_bound_list() {
743 Some(bound_list) => { 743 Some(bound_list) => bound_list
744 bound_list.bounds().map(|it| TypeBound::from_ast(&self.body_ctx, it)).collect() 744 .bounds()
745 } 745 .map(|it| Interned::new(TypeBound::from_ast(&self.body_ctx, it)))
746 .collect(),
746 None => Vec::new(), 747 None => Vec::new(),
747 } 748 }
748 } 749 }
@@ -810,7 +811,7 @@ fn desugar_future_path(orig: TypeRef) -> Path {
810 let binding = 811 let binding =
811 AssociatedTypeBinding { name: name![Output], type_ref: Some(orig), bounds: Vec::new() }; 812 AssociatedTypeBinding { name: name![Output], type_ref: Some(orig), bounds: Vec::new() };
812 last.bindings.push(binding); 813 last.bindings.push(binding);
813 generic_args.push(Some(Arc::new(last))); 814 generic_args.push(Some(Interned::new(last)));
814 815
815 Path::from_known_path(path, generic_args) 816 Path::from_known_path(path, generic_args)
816} 817}
diff --git a/crates/hir_def/src/item_tree/pretty.rs b/crates/hir_def/src/item_tree/pretty.rs
index 4bc87a0e2..9394a5de6 100644
--- a/crates/hir_def/src/item_tree/pretty.rs
+++ b/crates/hir_def/src/item_tree/pretty.rs
@@ -513,13 +513,13 @@ impl<'a> Printer<'a> {
513 } 513 }
514 } 514 }
515 515
516 fn print_type_bounds(&mut self, bounds: &[TypeBound]) { 516 fn print_type_bounds(&mut self, bounds: &[Interned<TypeBound>]) {
517 for (i, bound) in bounds.iter().enumerate() { 517 for (i, bound) in bounds.iter().enumerate() {
518 if i != 0 { 518 if i != 0 {
519 w!(self, " + "); 519 w!(self, " + ");
520 } 520 }
521 521
522 match bound { 522 match bound.as_ref() {
523 TypeBound::Path(path) => self.print_path(path), 523 TypeBound::Path(path) => self.print_path(path),
524 TypeBound::Lifetime(lt) => w!(self, "{}", lt.name), 524 TypeBound::Lifetime(lt) => w!(self, "{}", lt.name),
525 TypeBound::Error => w!(self, "{{unknown}}"), 525 TypeBound::Error => w!(self, "{{unknown}}"),
diff --git a/crates/hir_def/src/path.rs b/crates/hir_def/src/path.rs
index 9b8873fd2..45ab9d0ff 100644
--- a/crates/hir_def/src/path.rs
+++ b/crates/hir_def/src/path.rs
@@ -4,7 +4,6 @@ mod lower;
4use std::{ 4use std::{
5 fmt::{self, Display}, 5 fmt::{self, Display},
6 iter, 6 iter,
7 sync::Arc,
8}; 7};
9 8
10use crate::{body::LowerCtx, db::DefDatabase, intern::Interned, type_ref::LifetimeRef}; 9use crate::{body::LowerCtx, db::DefDatabase, intern::Interned, type_ref::LifetimeRef};
@@ -136,7 +135,7 @@ pub struct Path {
136 type_anchor: Option<Interned<TypeRef>>, 135 type_anchor: Option<Interned<TypeRef>>,
137 mod_path: Interned<ModPath>, 136 mod_path: Interned<ModPath>,
138 /// Invariant: the same len as `self.mod_path.segments` 137 /// Invariant: the same len as `self.mod_path.segments`
139 generic_args: Vec<Option<Arc<GenericArgs>>>, 138 generic_args: Vec<Option<Interned<GenericArgs>>>,
140} 139}
141 140
142/// Generic arguments to a path segment (e.g. the `i32` in `Option<i32>`). This 141/// Generic arguments to a path segment (e.g. the `i32` in `Option<i32>`). This
@@ -165,7 +164,7 @@ pub struct AssociatedTypeBinding {
165 /// Bounds for the associated type, like in `Iterator<Item: 164 /// Bounds for the associated type, like in `Iterator<Item:
166 /// SomeOtherTrait>`. (This is the unstable `associated_type_bounds` 165 /// SomeOtherTrait>`. (This is the unstable `associated_type_bounds`
167 /// feature.) 166 /// feature.)
168 pub bounds: Vec<TypeBound>, 167 pub bounds: Vec<Interned<TypeBound>>,
169} 168}
170 169
171/// A single generic argument. 170/// A single generic argument.
@@ -185,7 +184,7 @@ impl Path {
185 /// Converts a known mod path to `Path`. 184 /// Converts a known mod path to `Path`.
186 pub(crate) fn from_known_path( 185 pub(crate) fn from_known_path(
187 path: ModPath, 186 path: ModPath,
188 generic_args: Vec<Option<Arc<GenericArgs>>>, 187 generic_args: Vec<Option<Interned<GenericArgs>>>,
189 ) -> Path { 188 ) -> Path {
190 Path { type_anchor: None, mod_path: Interned::new(path), generic_args } 189 Path { type_anchor: None, mod_path: Interned::new(path), generic_args }
191 } 190 }
@@ -239,7 +238,7 @@ pub struct PathSegment<'a> {
239 238
240pub struct PathSegments<'a> { 239pub struct PathSegments<'a> {
241 segments: &'a [Name], 240 segments: &'a [Name],
242 generic_args: &'a [Option<Arc<GenericArgs>>], 241 generic_args: &'a [Option<Interned<GenericArgs>>],
243} 242}
244 243
245impl<'a> PathSegments<'a> { 244impl<'a> PathSegments<'a> {
diff --git a/crates/hir_def/src/path/lower.rs b/crates/hir_def/src/path/lower.rs
index a873325b2..5d5dd9c8f 100644
--- a/crates/hir_def/src/path/lower.rs
+++ b/crates/hir_def/src/path/lower.rs
@@ -3,7 +3,6 @@
3mod lower_use; 3mod lower_use;
4 4
5use crate::intern::Interned; 5use crate::intern::Interned;
6use std::sync::Arc;
7 6
8use either::Either; 7use either::Either;
9use hir_expand::name::{name, AsName}; 8use hir_expand::name::{name, AsName};
@@ -48,7 +47,7 @@ pub(super) fn lower_path(mut path: ast::Path, ctx: &LowerCtx) -> Option<Path> {
48 segment.ret_type(), 47 segment.ret_type(),
49 ) 48 )
50 }) 49 })
51 .map(Arc::new); 50 .map(Interned::new);
52 segments.push(name); 51 segments.push(name);
53 generic_args.push(args) 52 generic_args.push(args)
54 } 53 }
@@ -87,13 +86,13 @@ pub(super) fn lower_path(mut path: ast::Path, ctx: &LowerCtx) -> Option<Path> {
87 // Insert the type reference (T in the above example) as Self parameter for the trait 86 // Insert the type reference (T in the above example) as Self parameter for the trait
88 let last_segment = 87 let last_segment =
89 generic_args.iter_mut().rev().nth(num_segments.saturating_sub(1))?; 88 generic_args.iter_mut().rev().nth(num_segments.saturating_sub(1))?;
90 if last_segment.is_none() { 89 let mut args_inner = match last_segment {
91 *last_segment = Some(Arc::new(GenericArgs::empty())); 90 Some(it) => it.as_ref().clone(),
91 None => GenericArgs::empty(),
92 }; 92 };
93 let args = last_segment.as_mut().unwrap();
94 let mut args_inner = Arc::make_mut(args);
95 args_inner.has_self_type = true; 93 args_inner.has_self_type = true;
96 args_inner.args.insert(0, GenericArg::Type(self_type)); 94 args_inner.args.insert(0, GenericArg::Type(self_type));
95 *last_segment = Some(Interned::new(args_inner));
97 } 96 }
98 } 97 }
99 } 98 }
@@ -171,7 +170,9 @@ pub(super) fn lower_generic_args(
171 let name = name_ref.as_name(); 170 let name = name_ref.as_name();
172 let type_ref = assoc_type_arg.ty().map(|it| TypeRef::from_ast(lower_ctx, it)); 171 let type_ref = assoc_type_arg.ty().map(|it| TypeRef::from_ast(lower_ctx, it));
173 let bounds = if let Some(l) = assoc_type_arg.type_bound_list() { 172 let bounds = if let Some(l) = assoc_type_arg.type_bound_list() {
174 l.bounds().map(|it| TypeBound::from_ast(lower_ctx, it)).collect() 173 l.bounds()
174 .map(|it| Interned::new(TypeBound::from_ast(lower_ctx, it)))
175 .collect()
175 } else { 176 } else {
176 Vec::new() 177 Vec::new()
177 }; 178 };
diff --git a/crates/hir_def/src/type_ref.rs b/crates/hir_def/src/type_ref.rs
index cdcab7110..cbde6b940 100644
--- a/crates/hir_def/src/type_ref.rs
+++ b/crates/hir_def/src/type_ref.rs
@@ -5,7 +5,7 @@ use hir_expand::{name::Name, AstId, InFile};
5use std::convert::TryInto; 5use std::convert::TryInto;
6use syntax::ast; 6use syntax::ast;
7 7
8use crate::{body::LowerCtx, path::Path}; 8use crate::{body::LowerCtx, intern::Interned, path::Path};
9 9
10#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)] 10#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
11pub enum Mutability { 11pub enum Mutability {
@@ -91,8 +91,8 @@ pub enum TypeRef {
91 /// A fn pointer. Last element of the vector is the return type. 91 /// A fn pointer. Last element of the vector is the return type.
92 Fn(Vec<TypeRef>, bool /*varargs*/), 92 Fn(Vec<TypeRef>, bool /*varargs*/),
93 // For 93 // For
94 ImplTrait(Vec<TypeBound>), 94 ImplTrait(Vec<Interned<TypeBound>>),
95 DynTrait(Vec<TypeBound>), 95 DynTrait(Vec<Interned<TypeBound>>),
96 Macro(AstId<ast::MacroCall>), 96 Macro(AstId<ast::MacroCall>),
97 Error, 97 Error,
98} 98}
@@ -232,7 +232,7 @@ impl TypeRef {
232 | TypeRef::Slice(type_ref) => go(&type_ref, f), 232 | TypeRef::Slice(type_ref) => go(&type_ref, f),
233 TypeRef::ImplTrait(bounds) | TypeRef::DynTrait(bounds) => { 233 TypeRef::ImplTrait(bounds) | TypeRef::DynTrait(bounds) => {
234 for bound in bounds { 234 for bound in bounds {
235 match bound { 235 match bound.as_ref() {
236 TypeBound::Path(path) => go_path(path, f), 236 TypeBound::Path(path) => go_path(path, f),
237 TypeBound::Lifetime(_) | TypeBound::Error => (), 237 TypeBound::Lifetime(_) | TypeBound::Error => (),
238 } 238 }
@@ -262,7 +262,7 @@ impl TypeRef {
262 go(type_ref, f); 262 go(type_ref, f);
263 } 263 }
264 for bound in &binding.bounds { 264 for bound in &binding.bounds {
265 match bound { 265 match bound.as_ref() {
266 TypeBound::Path(path) => go_path(path, f), 266 TypeBound::Path(path) => go_path(path, f),
267 TypeBound::Lifetime(_) | TypeBound::Error => (), 267 TypeBound::Lifetime(_) | TypeBound::Error => (),
268 } 268 }
@@ -277,9 +277,9 @@ impl TypeRef {
277pub(crate) fn type_bounds_from_ast( 277pub(crate) fn type_bounds_from_ast(
278 lower_ctx: &LowerCtx, 278 lower_ctx: &LowerCtx,
279 type_bounds_opt: Option<ast::TypeBoundList>, 279 type_bounds_opt: Option<ast::TypeBoundList>,
280) -> Vec<TypeBound> { 280) -> Vec<Interned<TypeBound>> {
281 if let Some(type_bounds) = type_bounds_opt { 281 if let Some(type_bounds) = type_bounds_opt {
282 type_bounds.bounds().map(|it| TypeBound::from_ast(lower_ctx, it)).collect() 282 type_bounds.bounds().map(|it| Interned::new(TypeBound::from_ast(lower_ctx, it))).collect()
283 } else { 283 } else {
284 vec![] 284 vec![]
285 } 285 }
diff --git a/crates/hir_ty/src/display.rs b/crates/hir_ty/src/display.rs
index 7bbd1a1f7..637bbc634 100644
--- a/crates/hir_ty/src/display.rs
+++ b/crates/hir_ty/src/display.rs
@@ -13,6 +13,7 @@ use hir_def::{
13 db::DefDatabase, 13 db::DefDatabase,
14 find_path, 14 find_path,
15 generics::TypeParamProvenance, 15 generics::TypeParamProvenance,
16 intern::{Internable, Interned},
16 item_scope::ItemInNs, 17 item_scope::ItemInNs,
17 path::{Path, PathKind}, 18 path::{Path, PathKind},
18 type_ref::{TypeBound, TypeRef}, 19 type_ref::{TypeBound, TypeRef},
@@ -256,6 +257,12 @@ impl<T: HirDisplay> HirDisplay for &'_ T {
256 } 257 }
257} 258}
258 259
260impl<T: HirDisplay + Internable> HirDisplay for Interned<T> {
261 fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError> {
262 HirDisplay::hir_fmt(self.as_ref(), f)
263 }
264}
265
259impl HirDisplay for ProjectionTy { 266impl HirDisplay for ProjectionTy {
260 fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError> { 267 fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError> {
261 if f.should_truncate() { 268 if f.should_truncate() {
diff --git a/crates/hir_ty/src/lower.rs b/crates/hir_ty/src/lower.rs
index 8a375b973..1645ac533 100644
--- a/crates/hir_ty/src/lower.rs
+++ b/crates/hir_ty/src/lower.rs
@@ -10,6 +10,7 @@ use std::{iter, sync::Arc};
10 10
11use base_db::CrateId; 11use base_db::CrateId;
12use chalk_ir::{cast::Cast, fold::Shift, interner::HasInterner, Mutability, Safety}; 12use chalk_ir::{cast::Cast, fold::Shift, interner::HasInterner, Mutability, Safety};
13use hir_def::intern::Interned;
13use hir_def::{ 14use hir_def::{
14 adt::StructKind, 15 adt::StructKind,
15 body::{Expander, LowerCtx}, 16 body::{Expander, LowerCtx},
@@ -843,7 +844,7 @@ impl<'a> TyLoweringContext<'a> {
843 }) 844 })
844 } 845 }
845 846
846 fn lower_impl_trait(&self, bounds: &[TypeBound]) -> ReturnTypeImplTrait { 847 fn lower_impl_trait(&self, bounds: &[Interned<TypeBound>]) -> ReturnTypeImplTrait {
847 cov_mark::hit!(lower_rpit); 848 cov_mark::hit!(lower_rpit);
848 let self_ty = 849 let self_ty =
849 TyKind::BoundVar(BoundVar::new(DebruijnIndex::INNERMOST, 0)).intern(&Interner); 850 TyKind::BoundVar(BoundVar::new(DebruijnIndex::INNERMOST, 0)).intern(&Interner);