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Use chalk_ir::Mutability

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This commit is contained in:
Lukas Wirth 2021-03-01 19:30:34 +01:00
parent 4a9eec4478
commit 7072f59fc6
10 changed files with 78 additions and 64 deletions
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13
crates/hir/src/code_model.rs
View file

@ -14,7 +14,7 @@ use hir_def::{
per_ns::PerNs,
resolver::{HasResolver, Resolver},
src::HasSource as _,
type_ref::{Mutability, TypeRef},
type_ref::TypeRef,
AdtId, AssocContainerId, AssocItemId, AssocItemLoc, AttrDefId, ConstId, ConstParamId,
DefWithBodyId, EnumId, FunctionId, GenericDefId, HasModule, ImplId, LifetimeParamId,
LocalEnumVariantId, LocalFieldId, Lookup, ModuleId, StaticId, StructId, TraitId, TypeAliasId,
@ -32,8 +32,8 @@ use hir_ty::{
method_resolution,
traits::{FnTrait, Solution, SolutionVariables},
AliasTy, BoundVar, CallableDefId, CallableSig, Canonical, DebruijnIndex, GenericPredicate,
InEnvironment, Obligation, ProjectionPredicate, ProjectionTy, Scalar, Substs, TraitEnvironment,
Ty, TyDefId, TyVariableKind,
InEnvironment, Mutability, Obligation, ProjectionPredicate, ProjectionTy, Scalar, Substs,
TraitEnvironment, Ty, TyDefId, TyVariableKind,
};
use rustc_hash::FxHashSet;
use stdx::{format_to, impl_from};
@ -836,7 +836,7 @@ pub enum Access {
impl From<Mutability> for Access {
fn from(mutability: Mutability) -> Access {
match mutability {
Mutability::Shared => Access::Shared,
Mutability::Not => Access::Shared,
Mutability::Mut => Access::Exclusive,
}
}
@ -865,7 +865,10 @@ impl SelfParam {
.params
.first()
.map(|param| match *param {
TypeRef::Reference(.., mutability) => mutability.into(),
TypeRef::Reference(.., mutability) => match mutability {
hir_def::type_ref::Mutability::Shared => Access::Shared,
hir_def::type_ref::Mutability::Mut => Access::Exclusive,
},
_ => Access::Owned,
})
.unwrap_or(Access::Owned)

19
crates/hir_ty/src/display.rs
View file

@ -8,6 +8,7 @@ use crate::{
TraitRef, Ty,
};
use arrayvec::ArrayVec;
use chalk_ir::Mutability;
use hir_def::{
db::DefDatabase, find_path, generics::TypeParamProvenance, item_scope::ItemInNs, AdtId,
AssocContainerId, HasModule, Lookup, ModuleId, TraitId,
@ -291,9 +292,23 @@ impl HirDisplay for Ty {
t.into_displayable(f.db, f.max_size, f.omit_verbose_types, f.display_target);
if matches!(self, Ty::Raw(..)) {
write!(f, "*{}", m.as_keyword_for_ptr())?;
write!(
f,
"*{}",
match m {
Mutability::Not => "const ",
Mutability::Mut => "mut ",
}
)?;
} else {
write!(f, "&{}", m.as_keyword_for_ref())?;
write!(
f,
"&{}",
match m {
Mutability::Not => "",
Mutability::Mut => "mut ",
}
)?;
}
let datas;

5
crates/hir_ty/src/infer.rs
View file

@ -18,6 +18,7 @@ use std::mem;
use std::ops::Index;
use std::sync::Arc;
use chalk_ir::Mutability;
use hir_def::{
body::Body,
data::{ConstData, FunctionData, StaticData},
@ -25,7 +26,7 @@ use hir_def::{
lang_item::LangItemTarget,
path::{path, Path},
resolver::{HasResolver, Resolver, TypeNs},
type_ref::{Mutability, TypeRef},
type_ref::TypeRef,
AdtId, AssocItemId, DefWithBodyId, EnumVariantId, FieldId, FunctionId, Lookup, TraitId,
TypeAliasId, VariantId,
};
@ -87,7 +88,7 @@ impl BindingMode {
fn convert(annotation: BindingAnnotation) -> BindingMode {
match annotation {
BindingAnnotation::Unannotated | BindingAnnotation::Mutable => BindingMode::Move,
BindingAnnotation::Ref => BindingMode::Ref(Mutability::Shared),
BindingAnnotation::Ref => BindingMode::Ref(Mutability::Not),
BindingAnnotation::RefMut => BindingMode::Ref(Mutability::Mut),
}
}

14
crates/hir_ty/src/infer/coerce.rs
View file

@ -4,8 +4,8 @@
//!
//! See: https://doc.rust-lang.org/nomicon/coercions.html
use chalk_ir::TyVariableKind;
use hir_def::{lang_item::LangItemTarget, type_ref::Mutability};
use chalk_ir::{Mutability, TyVariableKind};
use hir_def::lang_item::LangItemTarget;
use test_utils::mark;
use crate::{autoderef, traits::Solution, Obligation, Substs, TraitRef, Ty};
@ -73,20 +73,20 @@ impl<'a> InferenceContext<'a> {
match (&mut from_ty, to_ty) {
// `*mut T` -> `*const T`
// `&mut T` -> `&T`
(Ty::Raw(m1, ..), Ty::Raw(m2 @ Mutability::Shared, ..))
| (Ty::Ref(m1, ..), Ty::Ref(m2 @ Mutability::Shared, ..)) => {
(Ty::Raw(m1, ..), Ty::Raw(m2 @ Mutability::Not, ..))
| (Ty::Ref(m1, ..), Ty::Ref(m2 @ Mutability::Not, ..)) => {
*m1 = *m2;
}
// `&T` -> `*const T`
// `&mut T` -> `*mut T`/`*const T`
(Ty::Ref(.., substs), &Ty::Raw(m2 @ Mutability::Shared, ..))
(Ty::Ref(.., substs), &Ty::Raw(m2 @ Mutability::Not, ..))
| (Ty::Ref(Mutability::Mut, substs), &Ty::Raw(m2, ..)) => {
from_ty = Ty::Raw(m2, substs.clone());
}
// Illegal mutability conversion
(Ty::Raw(Mutability::Shared, ..), Ty::Raw(Mutability::Mut, ..))
| (Ty::Ref(Mutability::Shared, ..), Ty::Ref(Mutability::Mut, ..)) => return false,
(Ty::Raw(Mutability::Not, ..), Ty::Raw(Mutability::Mut, ..))
| (Ty::Ref(Mutability::Not, ..), Ty::Ref(Mutability::Mut, ..)) => return false,
// `{function_type}` -> `fn()`
(Ty::FnDef(..), Ty::Function { .. }) => match from_ty.callable_sig(self.db) {

21
crates/hir_ty/src/infer/expr.rs
View file

@ -3,7 +3,7 @@
use std::iter::{repeat, repeat_with};
use std::{mem, sync::Arc};
use chalk_ir::TyVariableKind;
use chalk_ir::{Mutability, TyVariableKind};
use hir_def::{
expr::{Array, BinaryOp, Expr, ExprId, Literal, Statement, UnaryOp},
path::{GenericArg, GenericArgs},
@ -15,12 +15,14 @@ use syntax::ast::RangeOp;
use test_utils::mark;
use crate::{
autoderef, method_resolution, op,
autoderef,
lower::lower_to_chalk_mutability,
method_resolution, op,
primitive::{self, UintTy},
traits::{FnTrait, InEnvironment},
utils::{generics, variant_data, Generics},
Binders, CallableDefId, FnPointer, FnSig, Mutability, Obligation, OpaqueTyId, Rawness, Scalar,
Substs, TraitRef, Ty,
Binders, CallableDefId, FnPointer, FnSig, Obligation, OpaqueTyId, Rawness, Scalar, Substs,
TraitRef, Ty,
};
use super::{
@ -462,10 +464,11 @@ impl<'a> InferenceContext<'a> {
cast_ty
}
Expr::Ref { expr, rawness, mutability } => {
let mutability = lower_to_chalk_mutability(*mutability);
let expectation = if let Some((exp_inner, exp_rawness, exp_mutability)) =
&expected.ty.as_reference_or_ptr()
{
if *exp_mutability == Mutability::Mut && *mutability == Mutability::Shared {
if *exp_mutability == Mutability::Mut && mutability == Mutability::Not {
// FIXME: throw type error - expected mut reference but found shared ref,
// which cannot be coerced
}
@ -479,8 +482,8 @@ impl<'a> InferenceContext<'a> {
};
let inner_ty = self.infer_expr_inner(*expr, &expectation);
match rawness {
Rawness::RawPtr => Ty::Raw(*mutability, Substs::single(inner_ty)),
Rawness::Ref => Ty::Ref(*mutability, Substs::single(inner_ty)),
Rawness::RawPtr => Ty::Raw(mutability, Substs::single(inner_ty)),
Rawness::Ref => Ty::Ref(mutability, Substs::single(inner_ty)),
}
}
Expr::Box { expr } => {
@ -684,11 +687,11 @@ impl<'a> InferenceContext<'a> {
}
Expr::Literal(lit) => match lit {
Literal::Bool(..) => Ty::Scalar(Scalar::Bool),
Literal::String(..) => Ty::Ref(Mutability::Shared, Substs::single(Ty::Str)),
Literal::String(..) => Ty::Ref(Mutability::Not, Substs::single(Ty::Str)),
Literal::ByteString(..) => {
let byte_type = Ty::Scalar(Scalar::Uint(UintTy::U8));
let array_type = Ty::Array(Substs::single(byte_type));
Ty::Ref(Mutability::Shared, Substs::single(array_type))
Ty::Ref(Mutability::Not, Substs::single(array_type))
}
Literal::Char(..) => Ty::Scalar(Scalar::Char),
Literal::Int(_v, ty) => match ty {

11
crates/hir_ty/src/infer/pat.rs
View file

@ -3,17 +3,17 @@
use std::iter::repeat;
use std::sync::Arc;
use chalk_ir::Mutability;
use hir_def::{
expr::{BindingAnnotation, Expr, Literal, Pat, PatId, RecordFieldPat},
path::Path,
type_ref::Mutability,
FieldId,
};
use hir_expand::name::Name;
use test_utils::mark;
use super::{BindingMode, Expectation, InferenceContext};
use crate::{utils::variant_data, Substs, Ty};
use crate::{lower::lower_to_chalk_mutability, utils::variant_data, Substs, Ty};
impl<'a> InferenceContext<'a> {
fn infer_tuple_struct_pat(
@ -103,7 +103,7 @@ impl<'a> InferenceContext<'a> {
expected = inner;
default_bm = match default_bm {
BindingMode::Move => BindingMode::Ref(mutability),
BindingMode::Ref(Mutability::Shared) => BindingMode::Ref(Mutability::Shared),
BindingMode::Ref(Mutability::Not) => BindingMode::Ref(Mutability::Not),
BindingMode::Ref(Mutability::Mut) => BindingMode::Ref(mutability),
}
}
@ -152,9 +152,10 @@ impl<'a> InferenceContext<'a> {
}
}
Pat::Ref { pat, mutability } => {
let mutability = lower_to_chalk_mutability(*mutability);
let expectation = match expected.as_reference() {
Some((inner_ty, exp_mut)) => {
if *mutability != exp_mut {
if mutability != exp_mut {
// FIXME: emit type error?
}
inner_ty
@ -162,7 +163,7 @@ impl<'a> InferenceContext<'a> {
_ => &Ty::Unknown,
};
let subty = self.infer_pat(*pat, expectation, default_bm);
Ty::Ref(*mutability, Substs::single(subty))
Ty::Ref(mutability, Substs::single(subty))
}
Pat::TupleStruct { path: p, args: subpats, ellipsis } => self.infer_tuple_struct_pat(
p.as_ref(),

10
crates/hir_ty/src/lib.rs
View file

@ -27,11 +27,9 @@ use std::{iter, mem, ops::Deref, sync::Arc};
use base_db::salsa;
use hir_def::{
builtin_type::BuiltinType,
expr::ExprId,
type_ref::{Mutability, Rawness},
AdtId, AssocContainerId, DefWithBodyId, FunctionId, GenericDefId, HasModule, LifetimeParamId,
Lookup, TraitId, TypeAliasId, TypeParamId,
builtin_type::BuiltinType, expr::ExprId, type_ref::Rawness, AdtId, AssocContainerId,
DefWithBodyId, FunctionId, GenericDefId, HasModule, LifetimeParamId, Lookup, TraitId,
TypeAliasId, TypeParamId,
};
use itertools::Itertools;
@ -49,7 +47,7 @@ pub use lower::{
};
pub use traits::{InEnvironment, Obligation, ProjectionPredicate, TraitEnvironment};
pub use chalk_ir::{BoundVar, DebruijnIndex, Scalar, TyVariableKind};
pub use chalk_ir::{BoundVar, DebruijnIndex, Mutability, Scalar, TyVariableKind};
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
pub enum Lifetime {

12
crates/hir_ty/src/lower.rs
View file

@ -8,6 +8,7 @@
use std::{iter, sync::Arc};
use base_db::CrateId;
use chalk_ir::Mutability;
use hir_def::{
adt::StructKind,
builtin_type::BuiltinType,
@ -157,7 +158,7 @@ impl Ty {
}
TypeRef::RawPtr(inner, mutability) => {
let inner_ty = Ty::from_hir(ctx, inner);
Ty::Raw(*mutability, Substs::single(inner_ty))
Ty::Raw(lower_to_chalk_mutability(*mutability), Substs::single(inner_ty))
}
TypeRef::Array(inner) => {
let inner_ty = Ty::from_hir(ctx, inner);
@ -169,7 +170,7 @@ impl Ty {
}
TypeRef::Reference(inner, _, mutability) => {
let inner_ty = Ty::from_hir(ctx, inner);
Ty::Ref(*mutability, Substs::single(inner_ty))
Ty::Ref(lower_to_chalk_mutability(*mutability), Substs::single(inner_ty))
}
TypeRef::Placeholder => Ty::Unknown,
TypeRef::Fn(params, is_varargs) => {
@ -1259,3 +1260,10 @@ pub(crate) fn return_type_impl_traits(
Some(Arc::new(Binders::new(num_binders, return_type_impl_traits)))
}
}
pub(crate) fn lower_to_chalk_mutability(m: hir_def::type_ref::Mutability) -> Mutability {
match m {
hir_def::type_ref::Mutability::Shared => Mutability::Not,
hir_def::type_ref::Mutability::Mut => Mutability::Mut,
}
}

9
crates/hir_ty/src/method_resolution.rs
View file

@ -6,9 +6,10 @@ use std::{iter, sync::Arc};
use arrayvec::ArrayVec;
use base_db::CrateId;
use chalk_ir::Mutability;
use hir_def::{
lang_item::LangItemTarget, type_ref::Mutability, AdtId, AssocContainerId, AssocItemId,
FunctionId, GenericDefId, HasModule, ImplId, Lookup, ModuleId, TraitId, TypeAliasId,
lang_item::LangItemTarget, AdtId, AssocContainerId, AssocItemId, FunctionId, GenericDefId,
HasModule, ImplId, Lookup, ModuleId, TraitId, TypeAliasId,
};
use hir_expand::name::Name;
use rustc_hash::{FxHashMap, FxHashSet};
@ -251,7 +252,7 @@ impl Ty {
}
Ty::Str => lang_item_crate!("str_alloc", "str"),
Ty::Slice(_) => lang_item_crate!("slice_alloc", "slice"),
Ty::Raw(Mutability::Shared, _) => lang_item_crate!("const_ptr"),
Ty::Raw(Mutability::Not, _) => lang_item_crate!("const_ptr"),
Ty::Raw(Mutability::Mut, _) => lang_item_crate!("mut_ptr"),
Ty::Dyn(_) => {
return self.dyn_trait().and_then(|trait_| {
@ -429,7 +430,7 @@ fn iterate_method_candidates_with_autoref(
}
let refed = Canonical {
kinds: deref_chain[0].kinds.clone(),
value: Ty::Ref(Mutability::Shared, Substs::single(deref_chain[0].value.clone())),
value: Ty::Ref(Mutability::Not, Substs::single(deref_chain[0].value.clone())),
};
if iterate_method_candidates_by_receiver(
&refed,

28
crates/hir_ty/src/traits/chalk/mapping.rs
View file

@ -10,7 +10,7 @@ use chalk_ir::{
use chalk_solve::rust_ir;
use base_db::salsa::InternKey;
use hir_def::{type_ref::Mutability, AssocContainerId, GenericDefId, Lookup, TypeAliasId};
use hir_def::{AssocContainerId, GenericDefId, Lookup, TypeAliasId};
use crate::{
db::HirDatabase,
@ -65,7 +65,7 @@ impl ToChalk for Ty {
}
Ty::Raw(mutability, substs) => {
let ty = substs[0].clone().to_chalk(db);
chalk_ir::TyKind::Raw(mutability.to_chalk(db), ty).intern(&Interner)
chalk_ir::TyKind::Raw(mutability, ty).intern(&Interner)
}
Ty::Slice(substs) => {
chalk_ir::TyKind::Slice(substs[0].clone().to_chalk(db)).intern(&Interner)
@ -198,11 +198,11 @@ impl ToChalk for Ty {
Ty::Tuple(cardinality, from_chalk(db, subst))
}
chalk_ir::TyKind::Raw(mutability, ty) => {
Ty::Raw(from_chalk(db, mutability), Substs::single(from_chalk(db, ty)))
Ty::Raw(mutability, Substs::single(from_chalk(db, ty)))
}
chalk_ir::TyKind::Slice(ty) => Ty::Slice(Substs::single(from_chalk(db, ty))),
chalk_ir::TyKind::Ref(mutability, _lifetime, ty) => {
Ty::Ref(from_chalk(db, mutability), Substs::single(from_chalk(db, ty)))
Ty::Ref(mutability, Substs::single(from_chalk(db, ty)))
}
chalk_ir::TyKind::Str => Ty::Str,
chalk_ir::TyKind::Never => Ty::Never,
@ -230,12 +230,12 @@ impl ToChalk for Ty {
/// fake lifetime here, because Chalks built-in logic may expect it to be there.
fn ref_to_chalk(
db: &dyn HirDatabase,
mutability: Mutability,
mutability: chalk_ir::Mutability,
subst: Substs,
) -> chalk_ir::Ty<Interner> {
let arg = subst[0].clone().to_chalk(db);
let lifetime = LifetimeData::Static.intern(&Interner);
chalk_ir::TyKind::Ref(mutability.to_chalk(db), lifetime, arg).intern(&Interner)
chalk_ir::TyKind::Ref(mutability, lifetime, arg).intern(&Interner)
}
/// We currently don't model constants, but Chalk does. So, we have to insert a
@ -313,22 +313,6 @@ impl ToChalk for OpaqueTyId {
}
}
impl ToChalk for Mutability {
type Chalk = chalk_ir::Mutability;
fn to_chalk(self, _db: &dyn HirDatabase) -> Self::Chalk {
match self {
Mutability::Shared => chalk_ir::Mutability::Not,
Mutability::Mut => chalk_ir::Mutability::Mut,
}
}
fn from_chalk(_db: &dyn HirDatabase, chalk: Self::Chalk) -> Self {
match chalk {
chalk_ir::Mutability::Mut => Mutability::Mut,
chalk_ir::Mutability::Not => Mutability::Shared,
}
}
}
impl ToChalk for hir_def::ImplId {
type Chalk = ImplId;