1 //! This module contains the implementations of the `ToChalk` trait, which
2 //! handles conversion between our data types and their corresponding types in
3 //! Chalk (in both directions); plus some helper functions for more specialized
6 use chalk_solve::rust_ir;
8 use base_db::salsa::{self, InternKey};
9 use hir_def::{LifetimeParamId, TraitId, TypeAliasId, TypeOrConstParamId};
12 chalk_db, db::HirDatabase, AssocTypeId, CallableDefId, ChalkTraitId, FnDefId, ForeignDefId,
13 Interner, OpaqueTyId, PlaceholderIndex,
16 pub(crate) trait ToChalk {
18 fn to_chalk(self, db: &dyn HirDatabase) -> Self::Chalk;
19 fn from_chalk(db: &dyn HirDatabase, chalk: Self::Chalk) -> Self;
22 pub(crate) fn from_chalk<T, ChalkT>(db: &dyn HirDatabase, chalk: ChalkT) -> T
24 T: ToChalk<Chalk = ChalkT>,
26 T::from_chalk(db, chalk)
29 impl ToChalk for hir_def::ImplId {
30 type Chalk = chalk_db::ImplId;
32 fn to_chalk(self, _db: &dyn HirDatabase) -> chalk_db::ImplId {
33 chalk_ir::ImplId(self.as_intern_id())
36 fn from_chalk(_db: &dyn HirDatabase, impl_id: chalk_db::ImplId) -> hir_def::ImplId {
37 InternKey::from_intern_id(impl_id.0)
41 impl ToChalk for CallableDefId {
44 fn to_chalk(self, db: &dyn HirDatabase) -> FnDefId {
45 db.intern_callable_def(self).into()
48 fn from_chalk(db: &dyn HirDatabase, fn_def_id: FnDefId) -> CallableDefId {
49 db.lookup_intern_callable_def(fn_def_id.into())
53 pub(crate) struct TypeAliasAsValue(pub(crate) TypeAliasId);
55 impl ToChalk for TypeAliasAsValue {
56 type Chalk = chalk_db::AssociatedTyValueId;
58 fn to_chalk(self, _db: &dyn HirDatabase) -> chalk_db::AssociatedTyValueId {
59 rust_ir::AssociatedTyValueId(self.0.as_intern_id())
63 _db: &dyn HirDatabase,
64 assoc_ty_value_id: chalk_db::AssociatedTyValueId,
65 ) -> TypeAliasAsValue {
66 TypeAliasAsValue(TypeAliasId::from_intern_id(assoc_ty_value_id.0))
70 impl From<FnDefId> for crate::db::InternedCallableDefId {
71 fn from(fn_def_id: FnDefId) -> Self {
72 InternKey::from_intern_id(fn_def_id.0)
76 impl From<crate::db::InternedCallableDefId> for FnDefId {
77 fn from(callable_def_id: crate::db::InternedCallableDefId) -> Self {
78 chalk_ir::FnDefId(callable_def_id.as_intern_id())
82 impl From<OpaqueTyId> for crate::db::InternedOpaqueTyId {
83 fn from(id: OpaqueTyId) -> Self {
84 InternKey::from_intern_id(id.0)
88 impl From<crate::db::InternedOpaqueTyId> for OpaqueTyId {
89 fn from(id: crate::db::InternedOpaqueTyId) -> Self {
90 chalk_ir::OpaqueTyId(id.as_intern_id())
94 impl From<chalk_ir::ClosureId<Interner>> for crate::db::InternedClosureId {
95 fn from(id: chalk_ir::ClosureId<Interner>) -> Self {
96 Self::from_intern_id(id.0)
100 impl From<crate::db::InternedClosureId> for chalk_ir::ClosureId<Interner> {
101 fn from(id: crate::db::InternedClosureId) -> Self {
102 chalk_ir::ClosureId(id.as_intern_id())
106 pub fn to_foreign_def_id(id: TypeAliasId) -> ForeignDefId {
107 chalk_ir::ForeignDefId(salsa::InternKey::as_intern_id(&id))
110 pub fn from_foreign_def_id(id: ForeignDefId) -> TypeAliasId {
111 salsa::InternKey::from_intern_id(id.0)
114 pub fn to_assoc_type_id(id: TypeAliasId) -> AssocTypeId {
115 chalk_ir::AssocTypeId(salsa::InternKey::as_intern_id(&id))
118 pub fn from_assoc_type_id(id: AssocTypeId) -> TypeAliasId {
119 salsa::InternKey::from_intern_id(id.0)
122 pub fn from_placeholder_idx(db: &dyn HirDatabase, idx: PlaceholderIndex) -> TypeOrConstParamId {
123 assert_eq!(idx.ui, chalk_ir::UniverseIndex::ROOT);
124 let interned_id = salsa::InternKey::from_intern_id(salsa::InternId::from(idx.idx));
125 db.lookup_intern_type_or_const_param_id(interned_id)
128 pub fn to_placeholder_idx(db: &dyn HirDatabase, id: TypeOrConstParamId) -> PlaceholderIndex {
129 let interned_id = db.intern_type_or_const_param_id(id);
131 ui: chalk_ir::UniverseIndex::ROOT,
132 idx: salsa::InternKey::as_intern_id(&interned_id).as_usize(),
136 pub fn lt_from_placeholder_idx(db: &dyn HirDatabase, idx: PlaceholderIndex) -> LifetimeParamId {
137 assert_eq!(idx.ui, chalk_ir::UniverseIndex::ROOT);
138 let interned_id = salsa::InternKey::from_intern_id(salsa::InternId::from(idx.idx));
139 db.lookup_intern_lifetime_param_id(interned_id)
142 pub fn to_chalk_trait_id(id: TraitId) -> ChalkTraitId {
143 chalk_ir::TraitId(salsa::InternKey::as_intern_id(&id))
146 pub fn from_chalk_trait_id(id: ChalkTraitId) -> TraitId {
147 salsa::InternKey::from_intern_id(id.0)