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Merge pull request #18074 from ChayimFriedman2/typeref-source-map

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internal: Build source map for `hir_def::TypeRef`s
This commit is contained in:
Lukas Wirth 2024-10-28 11:01:12 +00:00 committed by GitHub
commit 80e9d014be
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GPG key ID: B5690EEEBB952194
46 changed files with 2511 additions and 929 deletions
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17
crates/hir-def/src/body.rs
View file

@ -30,6 +30,7 @@ use crate::{
nameres::DefMap,
path::{ModPath, Path},
src::HasSource,
type_ref::{TypeRef, TypeRefId, TypesMap, TypesSourceMap},
BlockId, DefWithBodyId, HasModule, Lookup,
};
@ -69,6 +70,7 @@ pub struct Body {
pub self_param: Option<BindingId>,
/// The `ExprId` of the actual body expression.
pub body_expr: ExprId,
pub types: TypesMap,
/// Block expressions in this body that may contain inner items.
block_scopes: Vec<BlockId>,
@ -139,6 +141,8 @@ pub struct BodySourceMap {
field_map_back: FxHashMap<ExprId, FieldSource>,
pat_field_map_back: FxHashMap<PatId, PatFieldSource>,
types: TypesSourceMap,
// FIXME: Make this a sane struct.
template_map: Option<
Box<(
@ -304,6 +308,7 @@ impl Body {
binding_hygiene,
expr_hygiene,
pat_hygiene,
types,
} = self;
block_scopes.shrink_to_fit();
exprs.shrink_to_fit();
@ -314,6 +319,7 @@ impl Body {
binding_hygiene.shrink_to_fit();
expr_hygiene.shrink_to_fit();
pat_hygiene.shrink_to_fit();
types.shrink_to_fit();
}
pub fn walk_bindings_in_pat(&self, pat_id: PatId, mut f: impl FnMut(BindingId)) {
@ -542,6 +548,7 @@ impl Default for Body {
binding_hygiene: Default::default(),
expr_hygiene: Default::default(),
pat_hygiene: Default::default(),
types: Default::default(),
}
}
}
@ -578,6 +585,14 @@ impl Index<BindingId> for Body {
}
}
impl Index<TypeRefId> for Body {
type Output = TypeRef;
fn index(&self, b: TypeRefId) -> &TypeRef {
&self.types[b]
}
}
// FIXME: Change `node_` prefix to something more reasonable.
// Perhaps `expr_syntax` and `expr_id`?
impl BodySourceMap {
@ -691,6 +706,7 @@ impl BodySourceMap {
template_map,
diagnostics,
binding_definitions,
types,
} = self;
if let Some(template_map) = template_map {
template_map.0.shrink_to_fit();
@ -707,5 +723,6 @@ impl BodySourceMap {
expansions.shrink_to_fit();
diagnostics.shrink_to_fit();
binding_definitions.shrink_to_fit();
types.shrink_to_fit();
}
}

64
crates/hir-def/src/body/lower.rs
View file

@ -12,7 +12,7 @@ use hir_expand::{
span_map::{ExpansionSpanMap, SpanMap},
InFile, MacroDefId,
};
use intern::{sym, Interned, Symbol};
use intern::{sym, Symbol};
use rustc_hash::FxHashMap;
use span::AstIdMap;
use stdx::never;
@ -274,8 +274,8 @@ impl ExprCollector<'_> {
(self.body, self.source_map)
}
fn ctx(&self) -> LowerCtx<'_> {
self.expander.ctx(self.db)
fn ctx(&mut self) -> LowerCtx<'_> {
self.expander.ctx(self.db, &mut self.body.types, &mut self.source_map.types)
}
fn collect_expr(&mut self, expr: ast::Expr) -> ExprId {
@ -436,7 +436,7 @@ impl ExprCollector<'_> {
}
ast::Expr::PathExpr(e) => {
let (path, hygiene) = self
.collect_expr_path(&e)
.collect_expr_path(e)
.map(|(path, hygiene)| (Expr::Path(path), hygiene))
.unwrap_or((Expr::Missing, HygieneId::ROOT));
let expr_id = self.alloc_expr(path, syntax_ptr);
@ -486,8 +486,7 @@ impl ExprCollector<'_> {
self.alloc_expr(Expr::Yeet { expr }, syntax_ptr)
}
ast::Expr::RecordExpr(e) => {
let path =
e.path().and_then(|path| self.expander.parse_path(self.db, path)).map(Box::new);
let path = e.path().and_then(|path| self.parse_path(path)).map(Box::new);
let record_lit = if let Some(nfl) = e.record_expr_field_list() {
let fields = nfl
.fields()
@ -534,7 +533,7 @@ impl ExprCollector<'_> {
ast::Expr::TryExpr(e) => self.collect_try_operator(syntax_ptr, e),
ast::Expr::CastExpr(e) => {
let expr = self.collect_expr_opt(e.expr());
let type_ref = Interned::new(TypeRef::from_ast_opt(&self.ctx(), e.ty()));
let type_ref = TypeRef::from_ast_opt(&self.ctx(), e.ty());
self.alloc_expr(Expr::Cast { expr, type_ref }, syntax_ptr)
}
ast::Expr::RefExpr(e) => {
@ -573,16 +572,13 @@ impl ExprCollector<'_> {
arg_types.reserve_exact(num_params);
for param in pl.params() {
let pat = this.collect_pat_top(param.pat());
let type_ref =
param.ty().map(|it| Interned::new(TypeRef::from_ast(&this.ctx(), it)));
let type_ref = param.ty().map(|it| TypeRef::from_ast(&this.ctx(), it));
args.push(pat);
arg_types.push(type_ref);
}
}
let ret_type = e
.ret_type()
.and_then(|r| r.ty())
.map(|it| Interned::new(TypeRef::from_ast(&this.ctx(), it)));
let ret_type =
e.ret_type().and_then(|r| r.ty()).map(|it| TypeRef::from_ast(&this.ctx(), it));
let prev_is_lowering_coroutine = mem::take(&mut this.is_lowering_coroutine);
let prev_try_block_label = this.current_try_block_label.take();
@ -709,7 +705,7 @@ impl ExprCollector<'_> {
ast::Expr::UnderscoreExpr(_) => self.alloc_expr(Expr::Underscore, syntax_ptr),
ast::Expr::AsmExpr(e) => self.lower_inline_asm(e, syntax_ptr),
ast::Expr::OffsetOfExpr(e) => {
let container = Interned::new(TypeRef::from_ast_opt(&self.ctx(), e.ty()));
let container = TypeRef::from_ast_opt(&self.ctx(), e.ty());
let fields = e.fields().map(|it| it.as_name()).collect();
self.alloc_expr(Expr::OffsetOf(OffsetOf { container, fields }), syntax_ptr)
}
@ -717,15 +713,15 @@ impl ExprCollector<'_> {
})
}
fn collect_expr_path(&mut self, e: &ast::PathExpr) -> Option<(Path, HygieneId)> {
fn parse_path(&mut self, path: ast::Path) -> Option<Path> {
self.expander.parse_path(self.db, path, &mut self.body.types, &mut self.source_map.types)
}
fn collect_expr_path(&mut self, e: ast::PathExpr) -> Option<(Path, HygieneId)> {
e.path().and_then(|path| {
let path = self.expander.parse_path(self.db, path)?;
let Path::Normal { type_anchor, mod_path, generic_args } = &path else {
panic!("path parsing produced a non-normal path");
};
let path = self.parse_path(path)?;
// Need to enable `mod_path.len() < 1` for `self`.
let may_be_variable =
type_anchor.is_none() && mod_path.len() <= 1 && generic_args.is_none();
let may_be_variable = matches!(&path, Path::BarePath(mod_path) if mod_path.len() <= 1);
let hygiene = if may_be_variable {
self.hygiene_id_for(e.syntax().text_range().start())
} else {
@ -790,17 +786,14 @@ impl ExprCollector<'_> {
}
ast::Expr::CallExpr(e) => {
let path = collect_path(self, e.expr()?)?;
let path = path
.path()
.and_then(|path| self.expander.parse_path(self.db, path))
.map(Box::new);
let path = path.path().and_then(|path| self.parse_path(path)).map(Box::new);
let (ellipsis, args) = collect_tuple(self, e.arg_list()?.args());
self.alloc_pat_from_expr(Pat::TupleStruct { path, args, ellipsis }, syntax_ptr)
}
ast::Expr::PathExpr(e) => {
let (path, hygiene) = self
.collect_expr_path(e)
.map(|(path, hygiene)| (Pat::Path(Box::new(path)), hygiene))
.collect_expr_path(e.clone())
.map(|(path, hygiene)| (Pat::Path(path), hygiene))
.unwrap_or((Pat::Missing, HygieneId::ROOT));
let pat_id = self.alloc_pat_from_expr(path, syntax_ptr);
if !hygiene.is_root() {
@ -819,8 +812,7 @@ impl ExprCollector<'_> {
id
}
ast::Expr::RecordExpr(e) => {
let path =
e.path().and_then(|path| self.expander.parse_path(self.db, path)).map(Box::new);
let path = e.path().and_then(|path| self.parse_path(path)).map(Box::new);
let record_field_list = e.record_expr_field_list()?;
let ellipsis = record_field_list.dotdot_token().is_some();
// FIXME: Report an error here if `record_field_list.spread().is_some()`.
@ -1063,7 +1055,7 @@ impl ExprCollector<'_> {
syntax_ptr,
);
let none_arm = MatchArm {
pat: self.alloc_pat_desugared(Pat::Path(Box::new(option_none))),
pat: self.alloc_pat_desugared(Pat::Path(option_none)),
guard: None,
expr: self.alloc_expr(Expr::Break { expr: None, label: None }, syntax_ptr),
};
@ -1325,8 +1317,7 @@ impl ExprCollector<'_> {
return;
}
let pat = self.collect_pat_top(stmt.pat());
let type_ref =
stmt.ty().map(|it| Interned::new(TypeRef::from_ast(&self.ctx(), it)));
let type_ref = stmt.ty().map(|it| TypeRef::from_ast(&self.ctx(), it));
let initializer = stmt.initializer().map(|e| self.collect_expr(e));
let else_branch = stmt
.let_else()
@ -1552,8 +1543,7 @@ impl ExprCollector<'_> {
return pat;
}
ast::Pat::TupleStructPat(p) => {
let path =
p.path().and_then(|path| self.expander.parse_path(self.db, path)).map(Box::new);
let path = p.path().and_then(|path| self.parse_path(path)).map(Box::new);
let (args, ellipsis) = self.collect_tuple_pat(
p.fields(),
comma_follows_token(p.l_paren_token()),
@ -1567,8 +1557,7 @@ impl ExprCollector<'_> {
Pat::Ref { pat, mutability }
}
ast::Pat::PathPat(p) => {
let path =
p.path().and_then(|path| self.expander.parse_path(self.db, path)).map(Box::new);
let path = p.path().and_then(|path| self.parse_path(path));
path.map(Pat::Path).unwrap_or(Pat::Missing)
}
ast::Pat::OrPat(p) => 'b: {
@ -1615,8 +1604,7 @@ impl ExprCollector<'_> {
}
ast::Pat::WildcardPat(_) => Pat::Wild,
ast::Pat::RecordPat(p) => {
let path =
p.path().and_then(|path| self.expander.parse_path(self.db, path)).map(Box::new);
let path = p.path().and_then(|path| self.parse_path(path)).map(Box::new);
let record_pat_field_list =
&p.record_pat_field_list().expect("every struct should have a field list");
let args = record_pat_field_list

4
crates/hir-def/src/body/lower/asm.rs
View file

@ -158,9 +158,7 @@ impl ExprCollector<'_> {
AsmOperand::Const(self.collect_expr_opt(c.expr()))
}
ast::AsmOperand::AsmSym(s) => {
let Some(path) =
s.path().and_then(|p| self.expander.parse_path(self.db, p))
else {
let Some(path) = s.path().and_then(|p| self.parse_path(p)) else {
continue;
};
AsmOperand::Sym(path)

27
crates/hir-def/src/body/pretty.rs
View file

@ -11,7 +11,6 @@ use crate::{
Statement,
},
pretty::{print_generic_args, print_path, print_type_ref},
type_ref::TypeRef,
};
use super::*;
@ -69,20 +68,20 @@ pub(super) fn print_body_hir(
};
if let DefWithBodyId::FunctionId(it) = owner {
p.buf.push('(');
let function_data = &db.function_data(it);
let function_data = db.function_data(it);
let (mut params, ret_type) = (function_data.params.iter(), &function_data.ret_type);
if let Some(self_param) = body.self_param {
p.print_binding(self_param);
p.buf.push_str(": ");
if let Some(ty) = params.next() {
p.print_type_ref(ty);
p.print_type_ref(*ty, &function_data.types_map);
p.buf.push_str(", ");
}
}
body.params.iter().zip(params).for_each(|(&param, ty)| {
p.print_pat(param);
p.buf.push_str(": ");
p.print_type_ref(ty);
p.print_type_ref(*ty, &function_data.types_map);
p.buf.push_str(", ");
});
// remove the last ", " in param list
@ -92,7 +91,7 @@ pub(super) fn print_body_hir(
p.buf.push(')');
// return type
p.buf.push_str(" -> ");
p.print_type_ref(ret_type);
p.print_type_ref(*ret_type, &function_data.types_map);
p.buf.push(' ');
}
p.print_expr(body.body_expr);
@ -242,7 +241,7 @@ impl Printer<'_> {
Expr::InlineAsm(_) => w!(self, "builtin#asm(_)"),
Expr::OffsetOf(offset_of) => {
w!(self, "builtin#offset_of(");
self.print_type_ref(&offset_of.container);
self.print_type_ref(offset_of.container, &self.body.types);
let edition = self.edition;
w!(
self,
@ -296,7 +295,7 @@ impl Printer<'_> {
if let Some(args) = generic_args {
w!(self, "::<");
let edition = self.edition;
print_generic_args(self.db, args, self, edition).unwrap();
print_generic_args(self.db, args, &self.body.types, self, edition).unwrap();
w!(self, ">");
}
w!(self, "(");
@ -405,7 +404,7 @@ impl Printer<'_> {
Expr::Cast { expr, type_ref } => {
self.print_expr(*expr);
w!(self, " as ");
self.print_type_ref(type_ref);
self.print_type_ref(*type_ref, &self.body.types);
}
Expr::Ref { expr, rawness, mutability } => {
w!(self, "&");
@ -493,13 +492,13 @@ impl Printer<'_> {
self.print_pat(*pat);
if let Some(ty) = ty {
w!(self, ": ");
self.print_type_ref(ty);
self.print_type_ref(*ty, &self.body.types);
}
}
w!(self, "|");
if let Some(ret_ty) = ret_type {
w!(self, " -> ");
self.print_type_ref(ret_ty);
self.print_type_ref(*ret_ty, &self.body.types);
}
self.whitespace();
self.print_expr(*body);
@ -734,7 +733,7 @@ impl Printer<'_> {
self.print_pat(*pat);
if let Some(ty) = type_ref {
w!(self, ": ");
self.print_type_ref(ty);
self.print_type_ref(*ty, &self.body.types);
}
if let Some(init) = initializer {
w!(self, " = ");
@ -792,14 +791,14 @@ impl Printer<'_> {
}
}
fn print_type_ref(&mut self, ty: &TypeRef) {
fn print_type_ref(&mut self, ty: TypeRefId, map: &TypesMap) {
let edition = self.edition;
print_type_ref(self.db, ty, self, edition).unwrap();
print_type_ref(self.db, ty, map, self, edition).unwrap();
}
fn print_path(&mut self, path: &Path) {
let edition = self.edition;
print_path(self.db, path, self, edition).unwrap();
print_path(self.db, path, &self.body.types, self, edition).unwrap();
}
fn print_binding(&mut self, id: BindingId) {

42
crates/hir-def/src/data.rs
View file

@ -6,7 +6,7 @@ use base_db::CrateId;
use hir_expand::{
name::Name, AstId, ExpandResult, HirFileId, InFile, MacroCallId, MacroCallKind, MacroDefKind,
};
use intern::{sym, Interned, Symbol};
use intern::{sym, Symbol};
use la_arena::{Idx, RawIdx};
use smallvec::SmallVec;
use syntax::{ast, Parse};
@ -25,7 +25,7 @@ use crate::{
DefMap, MacroSubNs,
},
path::ImportAlias,
type_ref::{TraitRef, TypeBound, TypeRef},
type_ref::{TraitRef, TypeBound, TypeRefId, TypesMap},
visibility::RawVisibility,
AssocItemId, AstIdWithPath, ConstId, ConstLoc, ExternCrateId, FunctionId, FunctionLoc,
HasModule, ImplId, Intern, ItemContainerId, ItemLoc, Lookup, Macro2Id, MacroRulesId, ModuleId,
@ -35,13 +35,14 @@ use crate::{
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct FunctionData {
pub name: Name,
pub params: Box<[Interned<TypeRef>]>,
pub ret_type: Interned<TypeRef>,
pub params: Box<[TypeRefId]>,
pub ret_type: TypeRefId,
pub attrs: Attrs,
pub visibility: RawVisibility,
pub abi: Option<Symbol>,
pub legacy_const_generics_indices: Option<Box<Box<[u32]>>>,
pub rustc_allow_incoherent_impl: bool,
pub types_map: Arc<TypesMap>,
flags: FnFlags,
}
@ -110,13 +111,14 @@ impl FunctionData {
.filter(|&(idx, _)| {
item_tree.attrs(db, krate, attr_owner(idx)).is_cfg_enabled(cfg_options)
})
.filter_map(|(_, param)| param.type_ref.clone())
.filter_map(|(_, param)| param.type_ref)
.collect(),
ret_type: func.ret_type.clone(),
ret_type: func.ret_type,
attrs: item_tree.attrs(db, krate, ModItem::from(loc.id.value).into()),
visibility,
abi: func.abi.clone(),
legacy_const_generics_indices,
types_map: func.types_map.clone(),
flags,
rustc_allow_incoherent_impl,
})
@ -182,13 +184,14 @@ fn parse_rustc_legacy_const_generics(tt: &crate::tt::Subtree) -> Box<[u32]> {
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct TypeAliasData {
pub name: Name,
pub type_ref: Option<Interned<TypeRef>>,
pub type_ref: Option<TypeRefId>,
pub visibility: RawVisibility,
pub is_extern: bool,
pub rustc_has_incoherent_inherent_impls: bool,
pub rustc_allow_incoherent_impl: bool,
/// Bounds restricting the type alias itself (eg. `type Ty: Bound;` in a trait or impl).
pub bounds: Box<[Interned<TypeBound>]>,
pub bounds: Box<[TypeBound]>,
pub types_map: Arc<TypesMap>,
}
impl TypeAliasData {
@ -216,12 +219,13 @@ impl TypeAliasData {
Arc::new(TypeAliasData {
name: typ.name.clone(),
type_ref: typ.type_ref.clone(),
type_ref: typ.type_ref,
visibility,
is_extern: matches!(loc.container, ItemContainerId::ExternBlockId(_)),
rustc_has_incoherent_inherent_impls,
rustc_allow_incoherent_impl,
bounds: typ.bounds.clone(),
types_map: typ.types_map.clone(),
})
}
}
@ -343,13 +347,14 @@ impl TraitAliasData {
#[derive(Debug, PartialEq, Eq)]
pub struct ImplData {
pub target_trait: Option<Interned<TraitRef>>,
pub self_ty: Interned<TypeRef>,
pub target_trait: Option<TraitRef>,
pub self_ty: TypeRefId,
pub items: Box<[AssocItemId]>,
pub is_negative: bool,
pub is_unsafe: bool,
// box it as the vec is usually empty anyways
pub macro_calls: Option<Box<Vec<(AstId<ast::Item>, MacroCallId)>>>,
pub types_map: Arc<TypesMap>,
}
impl ImplData {
@ -368,7 +373,7 @@ impl ImplData {
let item_tree = tree_id.item_tree(db);
let impl_def = &item_tree[tree_id.value];
let target_trait = impl_def.target_trait.clone();
let self_ty = impl_def.self_ty.clone();
let self_ty = impl_def.self_ty;
let is_negative = impl_def.is_negative;
let is_unsafe = impl_def.is_unsafe;
@ -387,6 +392,7 @@ impl ImplData {
is_negative,
is_unsafe,
macro_calls,
types_map: impl_def.types_map.clone(),
}),
DefDiagnostics::new(diagnostics),
)
@ -532,10 +538,11 @@ impl ExternCrateDeclData {
pub struct ConstData {
/// `None` for `const _: () = ();`
pub name: Option<Name>,
pub type_ref: Interned<TypeRef>,
pub type_ref: TypeRefId,
pub visibility: RawVisibility,
pub rustc_allow_incoherent_impl: bool,
pub has_body: bool,
pub types_map: Arc<TypesMap>,
}
impl ConstData {
@ -556,10 +563,11 @@ impl ConstData {
Arc::new(ConstData {
name: konst.name.clone(),
type_ref: konst.type_ref.clone(),
type_ref: konst.type_ref,
visibility,
rustc_allow_incoherent_impl,
has_body: konst.has_body,
types_map: konst.types_map.clone(),
})
}
}
@ -567,12 +575,13 @@ impl ConstData {
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct StaticData {
pub name: Name,
pub type_ref: Interned<TypeRef>,
pub type_ref: TypeRefId,
pub visibility: RawVisibility,
pub mutable: bool,
pub is_extern: bool,
pub has_safe_kw: bool,
pub has_unsafe_kw: bool,
pub types_map: Arc<TypesMap>,
}
impl StaticData {
@ -583,12 +592,13 @@ impl StaticData {
Arc::new(StaticData {
name: statik.name.clone(),
type_ref: statik.type_ref.clone(),
type_ref: statik.type_ref,
visibility: item_tree[statik.visibility].clone(),
mutable: statik.mutable,
is_extern: matches!(loc.container, ItemContainerId::ExternBlockId(_)),
has_safe_kw: statik.has_safe_kw,
has_unsafe_kw: statik.has_unsafe_kw,
types_map: statik.types_map.clone(),
})
}
}

46
crates/hir-def/src/data/adt.rs
View file

@ -6,7 +6,7 @@ use cfg::CfgOptions;
use either::Either;
use hir_expand::name::Name;
use intern::{sym, Interned};
use intern::sym;
use la_arena::Arena;
use rustc_abi::{Align, Integer, IntegerType, ReprFlags, ReprOptions};
use triomphe::Arc;
@ -21,7 +21,7 @@ use crate::{
lang_item::LangItem,
nameres::diagnostics::{DefDiagnostic, DefDiagnostics},
tt::{Delimiter, DelimiterKind, Leaf, Subtree, TokenTree},
type_ref::TypeRef,
type_ref::{TypeRefId, TypesMap},
visibility::RawVisibility,
EnumId, EnumVariantId, LocalFieldId, LocalModuleId, Lookup, StructId, UnionId, VariantId,
};
@ -73,8 +73,8 @@ pub struct EnumVariantData {
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum VariantData {
Record(Arena<FieldData>),
Tuple(Arena<FieldData>),
Record { fields: Arena<FieldData>, types_map: Arc<TypesMap> },
Tuple { fields: Arena<FieldData>, types_map: Arc<TypesMap> },
Unit,
}
@ -82,7 +82,7 @@ pub enum VariantData {
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct FieldData {
pub name: Name,
pub type_ref: Interned<TypeRef>,
pub type_ref: TypeRefId,
pub visibility: RawVisibility,
}
@ -208,7 +208,7 @@ impl StructData {
}
let strukt = &item_tree[loc.id.value];
let (data, diagnostics) = lower_fields(
let (fields, diagnostics) = lower_fields(
db,
krate,
loc.container.local_id,
@ -219,12 +219,13 @@ impl StructData {
&strukt.fields,
None,
);
let types_map = strukt.types_map.clone();
(
Arc::new(StructData {
name: strukt.name.clone(),
variant_data: Arc::new(match strukt.shape {
FieldsShape::Record => VariantData::Record(data),
FieldsShape::Tuple => VariantData::Tuple(data),
FieldsShape::Record => VariantData::Record { fields, types_map },
FieldsShape::Tuple => VariantData::Tuple { fields, types_map },
FieldsShape::Unit => VariantData::Unit,
}),
repr,
@ -258,7 +259,7 @@ impl StructData {
}
let union = &item_tree[loc.id.value];
let (data, diagnostics) = lower_fields(
let (fields, diagnostics) = lower_fields(
db,
krate,
loc.container.local_id,
@ -269,10 +270,11 @@ impl StructData {
&union.fields,
None,
);
let types_map = union.types_map.clone();
(
Arc::new(StructData {
name: union.name.clone(),
variant_data: Arc::new(VariantData::Record(data)),
variant_data: Arc::new(VariantData::Record { fields, types_map }),
repr,
visibility: item_tree[union.visibility].clone(),
flags,
@ -360,7 +362,7 @@ impl EnumVariantData {
let item_tree = loc.id.item_tree(db);
let variant = &item_tree[loc.id.value];
let (data, diagnostics) = lower_fields(
let (fields, diagnostics) = lower_fields(
db,
krate,
container.local_id,
@ -371,13 +373,14 @@ impl EnumVariantData {
&variant.fields,
Some(item_tree[loc.parent.lookup(db).id.value].visibility),
);
let types_map = variant.types_map.clone();
(
Arc::new(EnumVariantData {
name: variant.name.clone(),
variant_data: Arc::new(match variant.shape {
FieldsShape::Record => VariantData::Record(data),
FieldsShape::Tuple => VariantData::Tuple(data),
FieldsShape::Record => VariantData::Record { fields, types_map },
FieldsShape::Tuple => VariantData::Tuple { fields, types_map },
FieldsShape::Unit => VariantData::Unit,
}),
}),
@ -390,11 +393,20 @@ impl VariantData {
pub fn fields(&self) -> &Arena<FieldData> {
const EMPTY: &Arena<FieldData> = &Arena::new();
match &self {
VariantData::Record(fields) | VariantData::Tuple(fields) => fields,
VariantData::Record { fields, .. } | VariantData::Tuple { fields, .. } => fields,
_ => EMPTY,
}
}
pub fn types_map(&self) -> &TypesMap {
match &self {
VariantData::Record { types_map, .. } | VariantData::Tuple { types_map, .. } => {
types_map
}
VariantData::Unit => TypesMap::EMPTY,
}
}
// FIXME: Linear lookup
pub fn field(&self, name: &Name) -> Option<LocalFieldId> {
self.fields().iter().find_map(|(id, data)| if &data.name == name { Some(id) } else { None })
@ -402,8 +414,8 @@ impl VariantData {
pub fn kind(&self) -> StructKind {
match self {
VariantData::Record(_) => StructKind::Record,
VariantData::Tuple(_) => StructKind::Tuple,
VariantData::Record { .. } => StructKind::Record,
VariantData::Tuple { .. } => StructKind::Tuple,
VariantData::Unit => StructKind::Unit,
}
}
@ -463,7 +475,7 @@ fn lower_field(
) -> FieldData {
FieldData {
name: field.name.clone(),
type_ref: field.type_ref.clone(),
type_ref: field.type_ref,
visibility: item_tree[override_visibility.unwrap_or(field.visibility)].clone(),
}
}

26
crates/hir-def/src/db.rs
View file

@ -2,7 +2,7 @@
use base_db::{ra_salsa, CrateId, SourceDatabase, Upcast};
use either::Either;
use hir_expand::{db::ExpandDatabase, HirFileId, MacroDefId};
use intern::{sym, Interned};
use intern::sym;
use la_arena::ArenaMap;
use span::{EditionedFileId, MacroCallId};
use syntax::{ast, AstPtr};
@ -18,9 +18,10 @@ use crate::{
},
generics::GenericParams,
import_map::ImportMap,
item_tree::{AttrOwner, ItemTree},
item_tree::{AttrOwner, ItemTree, ItemTreeSourceMaps},
lang_item::{self, LangItem, LangItemTarget, LangItems},
nameres::{diagnostics::DefDiagnostics, DefMap},
type_ref::TypesSourceMap,
visibility::{self, Visibility},
AttrDefId, BlockId, BlockLoc, ConstBlockId, ConstBlockLoc, ConstId, ConstLoc, DefWithBodyId,
EnumId, EnumLoc, EnumVariantId, EnumVariantLoc, ExternBlockId, ExternBlockLoc, ExternCrateId,
@ -91,6 +92,18 @@ pub trait DefDatabase: InternDatabase + ExpandDatabase + Upcast<dyn ExpandDataba
#[ra_salsa::invoke(ItemTree::block_item_tree_query)]
fn block_item_tree(&self, block_id: BlockId) -> Arc<ItemTree>;
#[ra_salsa::invoke(ItemTree::file_item_tree_with_source_map_query)]
fn file_item_tree_with_source_map(
&self,
file_id: HirFileId,
) -> (Arc<ItemTree>, Arc<ItemTreeSourceMaps>);
#[ra_salsa::invoke(ItemTree::block_item_tree_with_source_map_query)]
fn block_item_tree_with_source_map(
&self,
block_id: BlockId,
) -> (Arc<ItemTree>, Arc<ItemTreeSourceMaps>);
#[ra_salsa::invoke(DefMap::crate_def_map_query)]
fn crate_def_map(&self, krate: CrateId) -> Arc<DefMap>;
@ -187,7 +200,14 @@ pub trait DefDatabase: InternDatabase + ExpandDatabase + Upcast<dyn ExpandDataba
fn expr_scopes(&self, def: DefWithBodyId) -> Arc<ExprScopes>;
#[ra_salsa::invoke(GenericParams::generic_params_query)]
fn generic_params(&self, def: GenericDefId) -> Interned<GenericParams>;
fn generic_params(&self, def: GenericDefId) -> Arc<GenericParams>;
/// If this returns `None` for the source map, that means it is the same as with the item tree.
#[ra_salsa::invoke(GenericParams::generic_params_with_source_map_query)]
fn generic_params_with_source_map(
&self,
def: GenericDefId,
) -> (Arc<GenericParams>, Option<Arc<TypesSourceMap>>);
// region:attrs

32
crates/hir-def/src/expander.rs
View file

@ -14,6 +14,7 @@ use span::SyntaxContextId;
use syntax::{ast, Parse};
use triomphe::Arc;
use crate::type_ref::{TypesMap, TypesSourceMap};
use crate::{
attr::Attrs, db::DefDatabase, lower::LowerCtx, path::Path, AsMacroCall, MacroId, ModuleId,
UnresolvedMacro,
@ -114,8 +115,19 @@ impl Expander {
mark.bomb.defuse();
}
pub fn ctx<'a>(&self, db: &'a dyn DefDatabase) -> LowerCtx<'a> {
LowerCtx::with_span_map_cell(db, self.current_file_id, self.span_map.clone())
pub fn ctx<'a>(
&self,
db: &'a dyn DefDatabase,
types_map: &'a mut TypesMap,
types_source_map: &'a mut TypesSourceMap,
) -> LowerCtx<'a> {
LowerCtx::with_span_map_cell(
db,
self.current_file_id,
self.span_map.clone(),
types_map,
types_source_map,
)
}
pub(crate) fn in_file<T>(&self, value: T) -> InFile<T> {
@ -142,8 +154,20 @@ impl Expander {
self.current_file_id
}
pub(crate) fn parse_path(&mut self, db: &dyn DefDatabase, path: ast::Path) -> Option<Path> {
let ctx = LowerCtx::with_span_map_cell(db, self.current_file_id, self.span_map.clone());
pub(crate) fn parse_path(
&mut self,
db: &dyn DefDatabase,
path: ast::Path,
types_map: &mut TypesMap,
types_source_map: &mut TypesSourceMap,
) -> Option<Path> {
let ctx = LowerCtx::with_span_map_cell(
db,
self.current_file_id,
self.span_map.clone(),
types_map,
types_source_map,
);
Path::from_src(&ctx, path)
}

343
crates/hir-def/src/generics.rs
View file

@ -3,16 +3,18 @@
//! generic parameters. See also the `Generics` type and the `generics_of` query
//! in rustc.
use std::ops;
use std::{ops, sync::LazyLock};
use either::Either;
use hir_expand::{
name::{AsName, Name},
ExpandResult,
};
use intern::Interned;
use la_arena::{Arena, RawIdx};
use stdx::impl_from;
use stdx::{
impl_from,
thin_vec::{EmptyOptimizedThinVec, ThinVec},
};
use syntax::ast::{self, HasGenericParams, HasName, HasTypeBounds};
use triomphe::Arc;
@ -22,7 +24,11 @@ use crate::{
item_tree::{AttrOwner, FileItemTreeId, GenericModItem, GenericsItemTreeNode, ItemTree},
lower::LowerCtx,
nameres::{DefMap, MacroSubNs},
type_ref::{ConstRef, LifetimeRef, TypeBound, TypeRef},
path::{AssociatedTypeBinding, GenericArg, GenericArgs, NormalPath, Path},
type_ref::{
ArrayType, ConstRef, FnType, LifetimeRef, RefType, TypeBound, TypeRef, TypeRefId, TypesMap,
TypesSourceMap,
},
AdtId, ConstParamId, GenericDefId, HasModule, ItemTreeLoc, LifetimeParamId,
LocalLifetimeParamId, LocalTypeOrConstParamId, Lookup, TypeOrConstParamId, TypeParamId,
};
@ -37,7 +43,7 @@ pub struct TypeParamData {
/// [`None`] only if the type ref is an [`TypeRef::ImplTrait`]. FIXME: Might be better to just
/// make it always be a value, giving impl trait a special name.
pub name: Option<Name>,
pub default: Option<Interned<TypeRef>>,
pub default: Option<TypeRefId>,
pub provenance: TypeParamProvenance,
}
@ -51,7 +57,7 @@ pub struct LifetimeParamData {
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
pub struct ConstParamData {
pub name: Name,
pub ty: Interned<TypeRef>,
pub ty: TypeRefId,
pub default: Option<ConstRef>,
}
@ -161,6 +167,7 @@ pub struct GenericParams {
type_or_consts: Arena<TypeOrConstParamData>,
lifetimes: Arena<LifetimeParamData>,
where_predicates: Box<[WherePredicate]>,
pub types_map: TypesMap,
}
impl ops::Index<LocalTypeOrConstParamId> for GenericParams {
@ -183,24 +190,14 @@ impl ops::Index<LocalLifetimeParamId> for GenericParams {
/// associated type bindings like `Iterator<Item = u32>`.
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
pub enum WherePredicate {
TypeBound {
target: WherePredicateTypeTarget,
bound: Interned<TypeBound>,
},
Lifetime {
target: LifetimeRef,
bound: LifetimeRef,
},
ForLifetime {
lifetimes: Box<[Name]>,
target: WherePredicateTypeTarget,
bound: Interned<TypeBound>,
},
TypeBound { target: WherePredicateTypeTarget, bound: TypeBound },
Lifetime { target: LifetimeRef, bound: LifetimeRef },
ForLifetime { lifetimes: Box<[Name]>, target: WherePredicateTypeTarget, bound: TypeBound },
}
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
pub enum WherePredicateTypeTarget {
TypeRef(Interned<TypeRef>),
TypeRef(TypeRefId),
/// For desugared where predicates that can directly refer to a type param.
TypeOrConstParam(LocalTypeOrConstParamId),
}
@ -300,7 +297,14 @@ impl GenericParams {
pub(crate) fn generic_params_query(
db: &dyn DefDatabase,
def: GenericDefId,
) -> Interned<GenericParams> {
) -> Arc<GenericParams> {
db.generic_params_with_source_map(def).0
}
pub(crate) fn generic_params_with_source_map_query(
db: &dyn DefDatabase,
def: GenericDefId,
) -> (Arc<GenericParams>, Option<Arc<TypesSourceMap>>) {
let _p = tracing::info_span!("generic_params_query").entered();
let krate = def.krate(db);
@ -309,7 +313,7 @@ impl GenericParams {
// Returns the generic parameters that are enabled under the current `#[cfg]` options
let enabled_params =
|params: &Interned<GenericParams>, item_tree: &ItemTree, parent: GenericModItem| {
|params: &Arc<GenericParams>, item_tree: &ItemTree, parent: GenericModItem| {
let enabled = |param| item_tree.attrs(db, krate, param).is_cfg_enabled(cfg_options);
let attr_owner_ct = |param| AttrOwner::TypeOrConstParamData(parent, param);
let attr_owner_lt = |param| AttrOwner::LifetimeParamData(parent, param);
@ -325,7 +329,7 @@ impl GenericParams {
if all_type_or_consts_enabled && all_lifetimes_enabled {
params.clone()
} else {
Interned::new(GenericParams {
Arc::new(GenericParams {
type_or_consts: all_type_or_consts_enabled
.then(|| params.type_or_consts.clone())
.unwrap_or_else(|| {
@ -347,6 +351,7 @@ impl GenericParams {
.collect()
}),
where_predicates: params.where_predicates.clone(),
types_map: params.types_map.clone(),
})
}
};
@ -357,18 +362,18 @@ impl GenericParams {
Data = impl ItemTreeLoc<Id = Id>,
>,
enabled_params: impl Fn(
&Interned<GenericParams>,
&Arc<GenericParams>,
&ItemTree,
GenericModItem,
) -> Interned<GenericParams>,
) -> Interned<GenericParams>
) -> Arc<GenericParams>,
) -> (Arc<GenericParams>, Option<Arc<TypesSourceMap>>)
where
FileItemTreeId<Id>: Into<GenericModItem>,
{
let id = id.lookup(db).item_tree_id();
let tree = id.item_tree(db);
let item = &tree[id.value];
enabled_params(item.generic_params(), &tree, id.value.into())
(enabled_params(item.generic_params(), &tree, id.value.into()), None)
}
match def {
@ -383,28 +388,37 @@ impl GenericParams {
let module = loc.container.module(db);
let func_data = db.function_data(id);
if func_data.params.is_empty() {
enabled_params
(enabled_params, None)
} else {
let source_maps = loc.id.item_tree_with_source_map(db).1;
let item_source_maps = source_maps.function(loc.id.value);
let mut generic_params = GenericParamsCollector {
type_or_consts: enabled_params.type_or_consts.clone(),
lifetimes: enabled_params.lifetimes.clone(),
where_predicates: enabled_params.where_predicates.clone().into(),
};
let (mut types_map, mut types_source_maps) =
(enabled_params.types_map.clone(), item_source_maps.generics().clone());
// Don't create an `Expander` if not needed since this
// could cause a reparse after the `ItemTree` has been created due to the spanmap.
let mut expander = None;
for param in func_data.params.iter() {
for &param in func_data.params.iter() {
generic_params.fill_implicit_impl_trait_args(
db,
&mut types_map,
&mut types_source_maps,
&mut expander,
&mut || {
(module.def_map(db), Expander::new(db, loc.id.file_id(), module))
},
param,
&item.types_map,
item_source_maps.item(),
);
}
Interned::new(generic_params.finish())
let generics = generic_params.finish(types_map, &mut types_source_maps);
(generics, Some(Arc::new(types_source_maps)))
}
}
GenericDefId::AdtId(AdtId::StructId(id)) => id_to_generics(db, id, enabled_params),
@ -414,11 +428,15 @@ impl GenericParams {
GenericDefId::TraitAliasId(id) => id_to_generics(db, id, enabled_params),
GenericDefId::TypeAliasId(id) => id_to_generics(db, id, enabled_params),
GenericDefId::ImplId(id) => id_to_generics(db, id, enabled_params),
GenericDefId::ConstId(_) => Interned::new(GenericParams {
type_or_consts: Default::default(),
lifetimes: Default::default(),
where_predicates: Default::default(),
}),
GenericDefId::ConstId(_) => (
Arc::new(GenericParams {
type_or_consts: Default::default(),
lifetimes: Default::default(),
where_predicates: Default::default(),
types_map: Default::default(),
}),
None,
),
}
}
}
@ -452,7 +470,7 @@ impl GenericParamsCollector {
&mut self,
lower_ctx: &LowerCtx<'_>,
type_bounds: Option<ast::TypeBoundList>,
target: Either<TypeRef, LifetimeRef>,
target: Either<TypeRefId, LifetimeRef>,
) {
for bound in type_bounds.iter().flat_map(|type_bound_list| type_bound_list.bounds()) {
self.add_where_predicate_from_bound(lower_ctx, bound, None, target.clone());
@ -473,16 +491,15 @@ impl GenericParamsCollector {
ast::TypeOrConstParam::Type(type_param) => {
let name = type_param.name().map_or_else(Name::missing, |it| it.as_name());
// FIXME: Use `Path::from_src`
let default = type_param
.default_type()
.map(|it| Interned::new(TypeRef::from_ast(lower_ctx, it)));
let default =
type_param.default_type().map(|it| TypeRef::from_ast(lower_ctx, it));
let param = TypeParamData {
name: Some(name.clone()),
default,
provenance: TypeParamProvenance::TypeParamList,
};
let idx = self.type_or_consts.alloc(param.into());
let type_ref = TypeRef::Path(name.into());
let type_ref = lower_ctx.alloc_type_ref_desugared(TypeRef::Path(name.into()));
self.fill_bounds(
lower_ctx,
type_param.type_bound_list(),
@ -492,12 +509,10 @@ impl GenericParamsCollector {
}
ast::TypeOrConstParam::Const(const_param) => {
let name = const_param.name().map_or_else(Name::missing, |it| it.as_name());
let ty = const_param
.ty()
.map_or(TypeRef::Error, |it| TypeRef::from_ast(lower_ctx, it));
let ty = TypeRef::from_ast_opt(lower_ctx, const_param.ty());
let param = ConstParamData {
name,
ty: Interned::new(ty),
ty,
default: ConstRef::from_const_param(lower_ctx, &const_param),
};
let idx = self.type_or_consts.alloc(param.into());
@ -557,7 +572,7 @@ impl GenericParamsCollector {
lower_ctx: &LowerCtx<'_>,
bound: ast::TypeBound,
hrtb_lifetimes: Option<&[Name]>,
target: Either<TypeRef, LifetimeRef>,
target: Either<TypeRefId, LifetimeRef>,
) {
let bound = TypeBound::from_ast(lower_ctx, bound);
self.fill_impl_trait_bounds(lower_ctx.take_impl_traits_bounds());
@ -565,12 +580,12 @@ impl GenericParamsCollector {
(Either::Left(type_ref), bound) => match hrtb_lifetimes {
Some(hrtb_lifetimes) => WherePredicate::ForLifetime {
lifetimes: hrtb_lifetimes.to_vec().into_boxed_slice(),
target: WherePredicateTypeTarget::TypeRef(Interned::new(type_ref)),
bound: Interned::new(bound),
target: WherePredicateTypeTarget::TypeRef(type_ref),
bound,
},
None => WherePredicate::TypeBound {
target: WherePredicateTypeTarget::TypeRef(Interned::new(type_ref)),
bound: Interned::new(bound),
target: WherePredicateTypeTarget::TypeRef(type_ref),
bound,
},
},
(Either::Right(lifetime), TypeBound::Lifetime(bound)) => {
@ -581,7 +596,7 @@ impl GenericParamsCollector {
self.where_predicates.push(predicate);
}
fn fill_impl_trait_bounds(&mut self, impl_bounds: Vec<Vec<Interned<TypeBound>>>) {
fn fill_impl_trait_bounds(&mut self, impl_bounds: Vec<ThinVec<TypeBound>>) {
for bounds in impl_bounds {
let param = TypeParamData {
name: None,
@ -589,10 +604,10 @@ impl GenericParamsCollector {
provenance: TypeParamProvenance::ArgumentImplTrait,
};
let param_id = self.type_or_consts.alloc(param.into());
for bound in bounds {
for bound in &bounds {
self.where_predicates.push(WherePredicate::TypeBound {
target: WherePredicateTypeTarget::TypeOrConstParam(param_id),
bound,
bound: bound.clone(),
});
}
}
@ -601,12 +616,16 @@ impl GenericParamsCollector {
fn fill_implicit_impl_trait_args(
&mut self,
db: &dyn DefDatabase,
generics_types_map: &mut TypesMap,
generics_types_source_map: &mut TypesSourceMap,
// FIXME: Change this back to `LazyCell` if https://github.com/rust-lang/libs-team/issues/429 is accepted.
exp: &mut Option<(Arc<DefMap>, Expander)>,
exp_fill: &mut dyn FnMut() -> (Arc<DefMap>, Expander),
type_ref: &TypeRef,
type_ref: TypeRefId,
types_map: &TypesMap,
types_source_map: &TypesSourceMap,
) {
type_ref.walk(&mut |type_ref| {
TypeRef::walk(type_ref, types_map, &mut |type_ref| {
if let TypeRef::ImplTrait(bounds) = type_ref {
let param = TypeParamData {
name: None,
@ -615,12 +634,20 @@ impl GenericParamsCollector {
};
let param_id = self.type_or_consts.alloc(param.into());
for bound in bounds {
let bound = copy_type_bound(
bound,
types_map,
types_source_map,
generics_types_map,
generics_types_source_map,
);
self.where_predicates.push(WherePredicate::TypeBound {
target: WherePredicateTypeTarget::TypeOrConstParam(param_id),
bound: bound.clone(),
bound,
});
}
}
if let TypeRef::Macro(mc) = type_ref {
let macro_call = mc.to_node(db.upcast());
let (def_map, expander) = exp.get_or_insert_with(&mut *exp_fill);
@ -641,23 +668,217 @@ impl GenericParamsCollector {
if let Ok(ExpandResult { value: Some((mark, expanded)), .. }) =
expander.enter_expand(db, macro_call, resolver)
{
let ctx = expander.ctx(db);
let (mut macro_types_map, mut macro_types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx = expander.ctx(db, &mut macro_types_map, &mut macro_types_source_map);
let type_ref = TypeRef::from_ast(&ctx, expanded.tree());
self.fill_implicit_impl_trait_args(db, &mut *exp, exp_fill, &type_ref);
self.fill_implicit_impl_trait_args(
db,
generics_types_map,
generics_types_source_map,
&mut *exp,
exp_fill,
type_ref,
&macro_types_map,
&macro_types_source_map,
);
exp.get_or_insert_with(&mut *exp_fill).1.exit(mark);
}
}
});
}
pub(crate) fn finish(self) -> GenericParams {
let Self { mut lifetimes, mut type_or_consts, where_predicates } = self;
pub(crate) fn finish(
self,
mut generics_types_map: TypesMap,
generics_types_source_map: &mut TypesSourceMap,
) -> Arc<GenericParams> {
let Self { mut lifetimes, mut type_or_consts, mut where_predicates } = self;
if lifetimes.is_empty() && type_or_consts.is_empty() && where_predicates.is_empty() {
static EMPTY: LazyLock<Arc<GenericParams>> = LazyLock::new(|| {
Arc::new(GenericParams {
lifetimes: Arena::new(),
type_or_consts: Arena::new(),
where_predicates: Box::default(),
types_map: TypesMap::default(),
})
});
return Arc::clone(&EMPTY);
}
lifetimes.shrink_to_fit();
type_or_consts.shrink_to_fit();
GenericParams {
where_predicates.shrink_to_fit();
generics_types_map.shrink_to_fit();
generics_types_source_map.shrink_to_fit();
Arc::new(GenericParams {
type_or_consts,
lifetimes,
where_predicates: where_predicates.into_boxed_slice(),
}
types_map: generics_types_map,
})
}
}
/// Copies a `TypeRef` from a `TypesMap` (accompanied with `TypesSourceMap`) into another `TypesMap`
/// (and `TypesSourceMap`).
fn copy_type_ref(
type_ref: TypeRefId,
from: &TypesMap,
from_source_map: &TypesSourceMap,
to: &mut TypesMap,
to_source_map: &mut TypesSourceMap,
) -> TypeRefId {
let result = match &from[type_ref] {
TypeRef::Fn(fn_) => {
let params = fn_.params().iter().map(|(name, param_type)| {
(name.clone(), copy_type_ref(*param_type, from, from_source_map, to, to_source_map))
});
TypeRef::Fn(FnType::new(fn_.is_varargs(), fn_.is_unsafe(), fn_.abi().clone(), params))
}
TypeRef::Tuple(types) => TypeRef::Tuple(EmptyOptimizedThinVec::from_iter(
types.iter().map(|&t| copy_type_ref(t, from, from_source_map, to, to_source_map)),
)),
&TypeRef::RawPtr(type_ref, mutbl) => TypeRef::RawPtr(
copy_type_ref(type_ref, from, from_source_map, to, to_source_map),
mutbl,
),
TypeRef::Reference(ref_) => TypeRef::Reference(Box::new(RefType {
ty: copy_type_ref(ref_.ty, from, from_source_map, to, to_source_map),
lifetime: ref_.lifetime.clone(),
mutability: ref_.mutability,
})),
TypeRef::Array(array) => TypeRef::Array(Box::new(ArrayType {
ty: copy_type_ref(array.ty, from, from_source_map, to, to_source_map),
len: array.len.clone(),
})),
&TypeRef::Slice(type_ref) => {
TypeRef::Slice(copy_type_ref(type_ref, from, from_source_map, to, to_source_map))
}
TypeRef::ImplTrait(bounds) => TypeRef::ImplTrait(ThinVec::from_iter(copy_type_bounds(
bounds,
from,
from_source_map,
to,
to_source_map,
))),
TypeRef::DynTrait(bounds) => TypeRef::DynTrait(ThinVec::from_iter(copy_type_bounds(
bounds,
from,
from_source_map,
to,
to_source_map,
))),
TypeRef::Path(path) => {
TypeRef::Path(copy_path(path, from, from_source_map, to, to_source_map))
}
TypeRef::Never => TypeRef::Never,
TypeRef::Placeholder => TypeRef::Placeholder,
TypeRef::Macro(macro_call) => TypeRef::Macro(*macro_call),
TypeRef::Error => TypeRef::Error,
};
let id = to.types.alloc(result);
if let Some(&ptr) = from_source_map.types_map_back.get(id) {
to_source_map.types_map_back.insert(id, ptr);
}
id
}
fn copy_path(
path: &Path,
from: &TypesMap,
from_source_map: &TypesSourceMap,
to: &mut TypesMap,
to_source_map: &mut TypesSourceMap,
) -> Path {
match path {
Path::BarePath(mod_path) => Path::BarePath(mod_path.clone()),
Path::Normal(path) => {
let type_anchor = path
.type_anchor()
.map(|type_ref| copy_type_ref(type_ref, from, from_source_map, to, to_source_map));
let mod_path = path.mod_path().clone();
let generic_args = path.generic_args().iter().map(|generic_args| {
copy_generic_args(generic_args, from, from_source_map, to, to_source_map)
});
Path::Normal(NormalPath::new(type_anchor, mod_path, generic_args))
}
Path::LangItem(lang_item, name) => Path::LangItem(*lang_item, name.clone()),
}
}
fn copy_generic_args(
generic_args: &Option<GenericArgs>,
from: &TypesMap,
from_source_map: &TypesSourceMap,
to: &mut TypesMap,
to_source_map: &mut TypesSourceMap,
) -> Option<GenericArgs> {
generic_args.as_ref().map(|generic_args| {
let args = generic_args
.args
.iter()
.map(|arg| match arg {
&GenericArg::Type(ty) => {
GenericArg::Type(copy_type_ref(ty, from, from_source_map, to, to_source_map))
}
GenericArg::Lifetime(lifetime) => GenericArg::Lifetime(lifetime.clone()),
GenericArg::Const(konst) => GenericArg::Const(konst.clone()),
})
.collect();
let bindings = generic_args
.bindings
.iter()
.map(|binding| {
let name = binding.name.clone();
let args =
copy_generic_args(&binding.args, from, from_source_map, to, to_source_map);
let type_ref = binding.type_ref.map(|type_ref| {
copy_type_ref(type_ref, from, from_source_map, to, to_source_map)
});
let bounds =
copy_type_bounds(&binding.bounds, from, from_source_map, to, to_source_map)
.collect();
AssociatedTypeBinding { name, args, type_ref, bounds }
})
.collect();
GenericArgs {
args,
has_self_type: generic_args.has_self_type,
bindings,
desugared_from_fn: generic_args.desugared_from_fn,
}
})
}
fn copy_type_bounds<'a>(
bounds: &'a [TypeBound],
from: &'a TypesMap,
from_source_map: &'a TypesSourceMap,
to: &'a mut TypesMap,
to_source_map: &'a mut TypesSourceMap,
) -> impl stdx::thin_vec::TrustedLen<Item = TypeBound> + 'a {
bounds.iter().map(|bound| copy_type_bound(bound, from, from_source_map, to, to_source_map))
}
fn copy_type_bound(
bound: &TypeBound,
from: &TypesMap,
from_source_map: &TypesSourceMap,
to: &mut TypesMap,
to_source_map: &mut TypesSourceMap,
) -> TypeBound {
match bound {
TypeBound::Path(path, modifier) => {
TypeBound::Path(copy_path(path, from, from_source_map, to, to_source_map), *modifier)
}
TypeBound::ForLifetime(lifetimes, path) => TypeBound::ForLifetime(
lifetimes.clone(),
copy_path(path, from, from_source_map, to, to_source_map),
),
TypeBound::Lifetime(lifetime) => TypeBound::Lifetime(lifetime.clone()),
TypeBound::Use(use_args) => TypeBound::Use(use_args.clone()),
TypeBound::Error => TypeBound::Error,
}
}

17
crates/hir-def/src/hir.rs
View file

@ -18,15 +18,16 @@ pub mod type_ref;
use std::fmt;
use hir_expand::{name::Name, MacroDefId};
use intern::{Interned, Symbol};
use intern::Symbol;
use la_arena::{Idx, RawIdx};
use rustc_apfloat::ieee::{Half as f16, Quad as f128};
use syntax::ast;
use type_ref::TypeRefId;
use crate::{
builtin_type::{BuiltinFloat, BuiltinInt, BuiltinUint},
path::{GenericArgs, Path},
type_ref::{Mutability, Rawness, TypeRef},
type_ref::{Mutability, Rawness},
BlockId, ConstBlockId,
};
@ -264,7 +265,7 @@ pub enum Expr {
},
Cast {
expr: ExprId,
type_ref: Interned<TypeRef>,
type_ref: TypeRefId,
},
Ref {
expr: ExprId,
@ -300,8 +301,8 @@ pub enum Expr {
},
Closure {
args: Box<[PatId]>,
arg_types: Box<[Option<Interned<TypeRef>>]>,
ret_type: Option<Interned<TypeRef>>,
arg_types: Box<[Option<TypeRefId>]>,
ret_type: Option<TypeRefId>,
body: ExprId,
closure_kind: ClosureKind,
capture_by: CaptureBy,
@ -318,7 +319,7 @@ pub enum Expr {
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct OffsetOf {
pub container: Interned<TypeRef>,
pub container: TypeRefId,
pub fields: Box<[Name]>,
}
@ -484,7 +485,7 @@ pub struct RecordLitField {
pub enum Statement {
Let {
pat: PatId,
type_ref: Option<Interned<TypeRef>>,
type_ref: Option<TypeRefId>,
initializer: Option<ExprId>,
else_branch: Option<ExprId>,
},
@ -582,7 +583,7 @@ pub enum Pat {
suffix: Box<[PatId]>,
},
/// This might refer to a variable if a single segment path (specifically, on destructuring assignment).
Path(Box<Path>),
Path(Path),
Lit(ExprId),
Bind {
id: BindingId,

203
crates/hir-def/src/hir/type_ref.rs
View file

@ -2,22 +2,27 @@
//! be directly created from an ast::TypeRef, without further queries.
use core::fmt;
use std::fmt::Write;
use std::{fmt::Write, ops::Index};
use hir_expand::{
db::ExpandDatabase,
name::{AsName, Name},
AstId,
AstId, InFile,
};
use intern::{sym, Interned, Symbol};
use intern::{sym, Symbol};
use la_arena::{Arena, ArenaMap, Idx};
use span::Edition;
use syntax::ast::{self, HasGenericArgs, HasName, IsString};
use stdx::thin_vec::{thin_vec_with_header_struct, EmptyOptimizedThinVec, ThinVec};
use syntax::{
ast::{self, HasGenericArgs, HasName, IsString},
AstPtr,
};
use crate::{
builtin_type::{BuiltinInt, BuiltinType, BuiltinUint},
hir::Literal,
lower::LowerCtx,
path::Path,
path::{GenericArg, Path},
};
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
@ -104,35 +109,90 @@ impl TraitRef {
}
}
thin_vec_with_header_struct! {
pub new(pub(crate)) struct FnType, FnTypeHeader {
pub params: [(Option<Name>, TypeRefId)],
pub is_varargs: bool,
pub is_unsafe: bool,
pub abi: Option<Symbol>; ref,
}
}
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
pub struct ArrayType {
pub ty: TypeRefId,
// FIXME: This should be Ast<ConstArg>
pub len: ConstRef,
}
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
pub struct RefType {
pub ty: TypeRefId,
pub lifetime: Option<LifetimeRef>,
pub mutability: Mutability,
}
/// Compare ty::Ty
///
/// Note: Most users of `TypeRef` that end up in the salsa database intern it using
/// `Interned<TypeRef>` to save space. But notably, nested `TypeRef`s are not interned, since that
/// does not seem to save any noticeable amount of memory.
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
pub enum TypeRef {
Never,
Placeholder,
Tuple(Vec<TypeRef>),
Tuple(EmptyOptimizedThinVec<TypeRefId>),
Path(Path),
RawPtr(Box<TypeRef>, Mutability),
Reference(Box<TypeRef>, Option<LifetimeRef>, Mutability),
// FIXME: This should be Array(Box<TypeRef>, Ast<ConstArg>),
Array(Box<TypeRef>, ConstRef),
Slice(Box<TypeRef>),
RawPtr(TypeRefId, Mutability),
Reference(Box<RefType>),
Array(Box<ArrayType>),
Slice(TypeRefId),
/// A fn pointer. Last element of the vector is the return type.
Fn(
Box<[(Option<Name>, TypeRef)]>,
bool, /*varargs*/
bool, /*is_unsafe*/
Option<Symbol>, /* abi */
),
ImplTrait(Vec<Interned<TypeBound>>),
DynTrait(Vec<Interned<TypeBound>>),
Fn(FnType),
ImplTrait(ThinVec<TypeBound>),
DynTrait(ThinVec<TypeBound>),
Macro(AstId<ast::MacroCall>),
Error,
}
#[cfg(target_arch = "x86_64")]
const _: () = assert!(size_of::<TypeRef>() == 16);
pub type TypeRefId = Idx<TypeRef>;
#[derive(Default, Clone, PartialEq, Eq, Debug, Hash)]
pub struct TypesMap {
pub(crate) types: Arena<TypeRef>,
}
impl TypesMap {
pub const EMPTY: &TypesMap = &TypesMap { types: Arena::new() };
pub(crate) fn shrink_to_fit(&mut self) {
let TypesMap { types } = self;
types.shrink_to_fit();
}
}
impl Index<TypeRefId> for TypesMap {
type Output = TypeRef;
fn index(&self, index: TypeRefId) -> &Self::Output {
&self.types[index]
}
}
pub type TypePtr = AstPtr<ast::Type>;
pub type TypeSource = InFile<TypePtr>;
#[derive(Default, Clone, PartialEq, Eq, Debug, Hash)]
pub struct TypesSourceMap {
pub(crate) types_map_back: ArenaMap<TypeRefId, TypeSource>,
}
impl TypesSourceMap {
pub(crate) fn shrink_to_fit(&mut self) {
let TypesSourceMap { types_map_back } = self;
types_map_back.shrink_to_fit();
}
}
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
pub struct LifetimeRef {
pub name: Name,
@ -162,7 +222,7 @@ pub enum TypeBound {
}
#[cfg(target_pointer_width = "64")]
const _: [(); 56] = [(); ::std::mem::size_of::<TypeBound>()];
const _: [(); 32] = [(); ::std::mem::size_of::<TypeBound>()];
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
pub enum UseArgRef {
@ -172,7 +232,7 @@ pub enum UseArgRef {
/// A modifier on a bound, currently this is only used for `?Sized`, where the
/// modifier is `Maybe`.
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum TraitBoundModifier {
None,
Maybe,
@ -180,12 +240,12 @@ pub enum TraitBoundModifier {
impl TypeRef {
/// Converts an `ast::TypeRef` to a `hir::TypeRef`.
pub fn from_ast(ctx: &LowerCtx<'_>, node: ast::Type) -> Self {
match node {
ast::Type::ParenType(inner) => TypeRef::from_ast_opt(ctx, inner.ty()),
ast::Type::TupleType(inner) => {
TypeRef::Tuple(inner.fields().map(|it| TypeRef::from_ast(ctx, it)).collect())
}
pub fn from_ast(ctx: &LowerCtx<'_>, node: ast::Type) -> TypeRefId {
let ty = match &node {
ast::Type::ParenType(inner) => return TypeRef::from_ast_opt(ctx, inner.ty()),
ast::Type::TupleType(inner) => TypeRef::Tuple(EmptyOptimizedThinVec::from_iter(
Vec::from_iter(inner.fields().map(|it| TypeRef::from_ast(ctx, it))),
)),
ast::Type::NeverType(..) => TypeRef::Never,
ast::Type::PathType(inner) => {
// FIXME: Use `Path::from_src`
@ -198,20 +258,21 @@ impl TypeRef {
ast::Type::PtrType(inner) => {
let inner_ty = TypeRef::from_ast_opt(ctx, inner.ty());
let mutability = Mutability::from_mutable(inner.mut_token().is_some());
TypeRef::RawPtr(Box::new(inner_ty), mutability)
TypeRef::RawPtr(inner_ty, mutability)
}
ast::Type::ArrayType(inner) => {
let len = ConstRef::from_const_arg(ctx, inner.const_arg());
TypeRef::Array(Box::new(TypeRef::from_ast_opt(ctx, inner.ty())), len)
}
ast::Type::SliceType(inner) => {
TypeRef::Slice(Box::new(TypeRef::from_ast_opt(ctx, inner.ty())))
TypeRef::Array(Box::new(ArrayType {
ty: TypeRef::from_ast_opt(ctx, inner.ty()),
len,
}))
}
ast::Type::SliceType(inner) => TypeRef::Slice(TypeRef::from_ast_opt(ctx, inner.ty())),
ast::Type::RefType(inner) => {
let inner_ty = TypeRef::from_ast_opt(ctx, inner.ty());
let lifetime = inner.lifetime().map(|lt| LifetimeRef::new(&lt));
let mutability = Mutability::from_mutable(inner.mut_token().is_some());
TypeRef::Reference(Box::new(inner_ty), lifetime, mutability)
TypeRef::Reference(Box::new(RefType { ty: inner_ty, lifetime, mutability }))
}
ast::Type::InferType(_inner) => TypeRef::Placeholder,
ast::Type::FnPtrType(inner) => {
@ -219,7 +280,7 @@ impl TypeRef {
.ret_type()
.and_then(|rt| rt.ty())
.map(|it| TypeRef::from_ast(ctx, it))
.unwrap_or_else(|| TypeRef::Tuple(Vec::new()));
.unwrap_or_else(|| ctx.alloc_type_ref_desugared(TypeRef::unit()));
let mut is_varargs = false;
let mut params = if let Some(pl) = inner.param_list() {
if let Some(param) = pl.params().last() {
@ -251,10 +312,10 @@ impl TypeRef {
let abi = inner.abi().map(lower_abi);
params.push((None, ret_ty));
TypeRef::Fn(params.into(), is_varargs, inner.unsafe_token().is_some(), abi)
TypeRef::Fn(FnType::new(is_varargs, inner.unsafe_token().is_some(), abi, params))
}
// for types are close enough for our purposes to the inner type for now...
ast::Type::ForType(inner) => TypeRef::from_ast_opt(ctx, inner.ty()),
ast::Type::ForType(inner) => return TypeRef::from_ast_opt(ctx, inner.ty()),
ast::Type::ImplTraitType(inner) => {
if ctx.outer_impl_trait() {
// Disallow nested impl traits
@ -271,72 +332,72 @@ impl TypeRef {
Some(mc) => TypeRef::Macro(ctx.ast_id(&mc)),
None => TypeRef::Error,
},
}
};
ctx.alloc_type_ref(ty, AstPtr::new(&node))
}
pub(crate) fn from_ast_opt(ctx: &LowerCtx<'_>, node: Option<ast::Type>) -> Self {
pub(crate) fn from_ast_opt(ctx: &LowerCtx<'_>, node: Option<ast::Type>) -> TypeRefId {
match node {
Some(node) => TypeRef::from_ast(ctx, node),
None => TypeRef::Error,
None => ctx.alloc_error_type(),
}
}
pub(crate) fn unit() -> TypeRef {
TypeRef::Tuple(Vec::new())
TypeRef::Tuple(EmptyOptimizedThinVec::empty())
}
pub fn walk(&self, f: &mut impl FnMut(&TypeRef)) {
go(self, f);
pub fn walk(this: TypeRefId, map: &TypesMap, f: &mut impl FnMut(&TypeRef)) {
go(this, f, map);
fn go(type_ref: &TypeRef, f: &mut impl FnMut(&TypeRef)) {
fn go(type_ref: TypeRefId, f: &mut impl FnMut(&TypeRef), map: &TypesMap) {
let type_ref = &map[type_ref];
f(type_ref);
match type_ref {
TypeRef::Fn(params, _, _, _) => {
params.iter().for_each(|(_, param_type)| go(param_type, f))
TypeRef::Fn(fn_) => {
fn_.params().iter().for_each(|&(_, param_type)| go(param_type, f, map))
}
TypeRef::Tuple(types) => types.iter().for_each(|t| go(t, f)),
TypeRef::RawPtr(type_ref, _)
| TypeRef::Reference(type_ref, ..)
| TypeRef::Array(type_ref, _)
| TypeRef::Slice(type_ref) => go(type_ref, f),
TypeRef::Tuple(types) => types.iter().for_each(|&t| go(t, f, map)),
TypeRef::RawPtr(type_ref, _) | TypeRef::Slice(type_ref) => go(*type_ref, f, map),
TypeRef::Reference(it) => go(it.ty, f, map),
TypeRef::Array(it) => go(it.ty, f, map),
TypeRef::ImplTrait(bounds) | TypeRef::DynTrait(bounds) => {
for bound in bounds {
match bound.as_ref() {
match bound {
TypeBound::Path(path, _) | TypeBound::ForLifetime(_, path) => {
go_path(path, f)
go_path(path, f, map)
}
TypeBound::Lifetime(_) | TypeBound::Error | TypeBound::Use(_) => (),
}
}
}
TypeRef::Path(path) => go_path(path, f),
TypeRef::Path(path) => go_path(path, f, map),
TypeRef::Never | TypeRef::Placeholder | TypeRef::Macro(_) | TypeRef::Error => {}
};
}
fn go_path(path: &Path, f: &mut impl FnMut(&TypeRef)) {
fn go_path(path: &Path, f: &mut impl FnMut(&TypeRef), map: &TypesMap) {
if let Some(type_ref) = path.type_anchor() {
go(type_ref, f);
go(type_ref, f, map);
}
for segment in path.segments().iter() {
if let Some(args_and_bindings) = segment.args_and_bindings {
for arg in args_and_bindings.args.iter() {
match arg {
crate::path::GenericArg::Type(type_ref) => {
go(type_ref, f);
GenericArg::Type(type_ref) => {
go(*type_ref, f, map);
}
crate::path::GenericArg::Const(_)
| crate::path::GenericArg::Lifetime(_) => {}
GenericArg::Const(_) | GenericArg::Lifetime(_) => {}
}
}
for binding in args_and_bindings.bindings.iter() {
if let Some(type_ref) = &binding.type_ref {
go(type_ref, f);
if let Some(type_ref) = binding.type_ref {
go(type_ref, f, map);
}
for bound in binding.bounds.iter() {
match bound.as_ref() {
match bound {
TypeBound::Path(path, _) | TypeBound::ForLifetime(_, path) => {
go_path(path, f)
go_path(path, f, map)
}
TypeBound::Lifetime(_) | TypeBound::Error | TypeBound::Use(_) => (),
}
@ -351,11 +412,13 @@ impl TypeRef {
pub(crate) fn type_bounds_from_ast(
lower_ctx: &LowerCtx<'_>,
type_bounds_opt: Option<ast::TypeBoundList>,
) -> Vec<Interned<TypeBound>> {
) -> ThinVec<TypeBound> {
if let Some(type_bounds) = type_bounds_opt {
type_bounds.bounds().map(|it| Interned::new(TypeBound::from_ast(lower_ctx, it))).collect()
ThinVec::from_iter(Vec::from_iter(
type_bounds.bounds().map(|it| TypeBound::from_ast(lower_ctx, it)),
))
} else {
vec![]
ThinVec::from_iter([])
}
}

271
crates/hir-def/src/item_tree.rs
View file

@ -61,7 +61,7 @@ use crate::{
db::DefDatabase,
generics::GenericParams,
path::{GenericArgs, ImportAlias, ModPath, Path, PathKind},
type_ref::{Mutability, TraitRef, TypeBound, TypeRef},
type_ref::{Mutability, TraitRef, TypeBound, TypeRefId, TypesMap, TypesSourceMap},
visibility::{RawVisibility, VisibilityExplicitness},
BlockId, LocalLifetimeParamId, LocalTypeOrConstParamId, Lookup,
};
@ -100,13 +100,20 @@ pub struct ItemTree {
impl ItemTree {
pub(crate) fn file_item_tree_query(db: &dyn DefDatabase, file_id: HirFileId) -> Arc<ItemTree> {
db.file_item_tree_with_source_map(file_id).0
}
pub(crate) fn file_item_tree_with_source_map_query(
db: &dyn DefDatabase,
file_id: HirFileId,
) -> (Arc<ItemTree>, Arc<ItemTreeSourceMaps>) {
let _p = tracing::info_span!("file_item_tree_query", ?file_id).entered();
static EMPTY: OnceLock<Arc<ItemTree>> = OnceLock::new();
static EMPTY: OnceLock<(Arc<ItemTree>, Arc<ItemTreeSourceMaps>)> = OnceLock::new();
let ctx = lower::Ctx::new(db, file_id);
let syntax = db.parse_or_expand(file_id);
let mut top_attrs = None;
let mut item_tree = match_ast! {
let (mut item_tree, source_maps) = match_ast! {
match syntax {
ast::SourceFile(file) => {
top_attrs = Some(RawAttrs::new(db.upcast(), &file, ctx.span_map()));
@ -136,42 +143,55 @@ impl ItemTree {
{
EMPTY
.get_or_init(|| {
Arc::new(ItemTree {
top_level: SmallVec::new_const(),
attrs: FxHashMap::default(),
data: None,
})
(
Arc::new(ItemTree {
top_level: SmallVec::new_const(),
attrs: FxHashMap::default(),
data: None,
}),
Arc::default(),
)
})
.clone()
} else {
item_tree.shrink_to_fit();
Arc::new(item_tree)
(Arc::new(item_tree), Arc::new(source_maps))
}
}
pub(crate) fn block_item_tree_query(db: &dyn DefDatabase, block: BlockId) -> Arc<ItemTree> {
db.block_item_tree_with_source_map(block).0
}
pub(crate) fn block_item_tree_with_source_map_query(
db: &dyn DefDatabase,
block: BlockId,
) -> (Arc<ItemTree>, Arc<ItemTreeSourceMaps>) {
let _p = tracing::info_span!("block_item_tree_query", ?block).entered();
static EMPTY: OnceLock<Arc<ItemTree>> = OnceLock::new();
static EMPTY: OnceLock<(Arc<ItemTree>, Arc<ItemTreeSourceMaps>)> = OnceLock::new();
let loc = block.lookup(db);
let block = loc.ast_id.to_node(db.upcast());
let ctx = lower::Ctx::new(db, loc.ast_id.file_id);
let mut item_tree = ctx.lower_block(&block);
let (mut item_tree, source_maps) = ctx.lower_block(&block);
if item_tree.data.is_none() && item_tree.top_level.is_empty() && item_tree.attrs.is_empty()
{
EMPTY
.get_or_init(|| {
Arc::new(ItemTree {
top_level: SmallVec::new_const(),
attrs: FxHashMap::default(),
data: None,
})
(
Arc::new(ItemTree {
top_level: SmallVec::new_const(),
attrs: FxHashMap::default(),
data: None,
}),
Arc::default(),
)
})
.clone()
} else {
item_tree.shrink_to_fit();
Arc::new(item_tree)
(Arc::new(item_tree), Arc::new(source_maps))
}
}
@ -308,6 +328,160 @@ struct ItemTreeData {
vis: ItemVisibilities,
}
#[derive(Default, Debug, Eq, PartialEq)]
pub struct ItemTreeSourceMaps {
all_concatenated: Box<[TypesSourceMap]>,
structs_offset: u32,
unions_offset: u32,
enum_generics_offset: u32,
variants_offset: u32,
consts_offset: u32,
statics_offset: u32,
trait_generics_offset: u32,
trait_alias_generics_offset: u32,
impls_offset: u32,
type_aliases_offset: u32,
}
#[derive(Clone, Copy)]
pub struct GenericItemSourceMap<'a>(&'a [TypesSourceMap; 2]);
impl<'a> GenericItemSourceMap<'a> {
#[inline]
pub fn item(self) -> &'a TypesSourceMap {
&self.0[0]
}
#[inline]
pub fn generics(self) -> &'a TypesSourceMap {
&self.0[1]
}
}
#[derive(Default, Debug, Eq, PartialEq)]
pub struct GenericItemSourceMapBuilder {
pub item: TypesSourceMap,
pub generics: TypesSourceMap,
}
#[derive(Default, Debug, Eq, PartialEq)]
struct ItemTreeSourceMapsBuilder {
functions: Vec<GenericItemSourceMapBuilder>,
structs: Vec<GenericItemSourceMapBuilder>,
unions: Vec<GenericItemSourceMapBuilder>,
enum_generics: Vec<TypesSourceMap>,
variants: Vec<TypesSourceMap>,
consts: Vec<TypesSourceMap>,
statics: Vec<TypesSourceMap>,
trait_generics: Vec<TypesSourceMap>,
trait_alias_generics: Vec<TypesSourceMap>,
impls: Vec<GenericItemSourceMapBuilder>,
type_aliases: Vec<GenericItemSourceMapBuilder>,
}
impl ItemTreeSourceMapsBuilder {
fn build(self) -> ItemTreeSourceMaps {
let ItemTreeSourceMapsBuilder {
functions,
structs,
unions,
enum_generics,
variants,
consts,
statics,
trait_generics,
trait_alias_generics,
impls,
type_aliases,
} = self;
let structs_offset = functions.len() as u32 * 2;
let unions_offset = structs_offset + (structs.len() as u32 * 2);
let enum_generics_offset = unions_offset + (unions.len() as u32 * 2);
let variants_offset = enum_generics_offset + (enum_generics.len() as u32);
let consts_offset = variants_offset + (variants.len() as u32);
let statics_offset = consts_offset + (consts.len() as u32);
let trait_generics_offset = statics_offset + (statics.len() as u32);
let trait_alias_generics_offset = trait_generics_offset + (trait_generics.len() as u32);
let impls_offset = trait_alias_generics_offset + (trait_alias_generics.len() as u32);
let type_aliases_offset = impls_offset + (impls.len() as u32 * 2);
let all_concatenated = generics_concat(functions)
.chain(generics_concat(structs))
.chain(generics_concat(unions))
.chain(enum_generics)
.chain(variants)
.chain(consts)
.chain(statics)
.chain(trait_generics)
.chain(trait_alias_generics)
.chain(generics_concat(impls))
.chain(generics_concat(type_aliases))
.collect();
return ItemTreeSourceMaps {
all_concatenated,
structs_offset,
unions_offset,
enum_generics_offset,
variants_offset,
consts_offset,
statics_offset,
trait_generics_offset,
trait_alias_generics_offset,
impls_offset,
type_aliases_offset,
};
fn generics_concat(
source_maps: Vec<GenericItemSourceMapBuilder>,
) -> impl Iterator<Item = TypesSourceMap> {
source_maps.into_iter().flat_map(|it| [it.item, it.generics])
}
}
}
impl ItemTreeSourceMaps {
#[inline]
fn generic_item(&self, offset: u32, index: u32) -> GenericItemSourceMap<'_> {
GenericItemSourceMap(
self.all_concatenated[(offset + (index * 2)) as usize..][..2].try_into().unwrap(),
)
}
#[inline]
fn non_generic_item(&self, offset: u32, index: u32) -> &TypesSourceMap {
&self.all_concatenated[(offset + index) as usize]
}
#[inline]
pub fn function(&self, index: FileItemTreeId<Function>) -> GenericItemSourceMap<'_> {
self.generic_item(0, index.0.into_raw().into_u32())
}
}
macro_rules! index_item_source_maps {
( $( $name:ident; $field:ident[$tree_id:ident]; $fn:ident; $ret:ty, )* ) => {
impl ItemTreeSourceMaps {
$(
#[inline]
pub fn $name(&self, index: FileItemTreeId<$tree_id>) -> $ret {
self.$fn(self.$field, index.0.into_raw().into_u32())
}
)*
}
};
}
index_item_source_maps! {
strukt; structs_offset[Struct]; generic_item; GenericItemSourceMap<'_>,
union; unions_offset[Union]; generic_item; GenericItemSourceMap<'_>,
enum_generic; enum_generics_offset[Enum]; non_generic_item; &TypesSourceMap,
variant; variants_offset[Variant]; non_generic_item; &TypesSourceMap,
konst; consts_offset[Const]; non_generic_item; &TypesSourceMap,
statik; statics_offset[Static]; non_generic_item; &TypesSourceMap,
trait_generic; trait_generics_offset[Trait]; non_generic_item; &TypesSourceMap,
trait_alias_generic; trait_alias_generics_offset[TraitAlias]; non_generic_item; &TypesSourceMap,
impl_; impls_offset[Impl]; generic_item; GenericItemSourceMap<'_>,
type_alias; type_aliases_offset[TypeAlias]; generic_item; GenericItemSourceMap<'_>,
}
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
pub enum AttrOwner {
/// Attributes on an item.
@ -363,7 +537,7 @@ pub trait ItemTreeNode: Clone {
fn attr_owner(id: FileItemTreeId<Self>) -> AttrOwner;
}
pub trait GenericsItemTreeNode: ItemTreeNode {
fn generic_params(&self) -> &Interned<GenericParams>;
fn generic_params(&self) -> &Arc<GenericParams>;
}
pub struct FileItemTreeId<N>(Idx<N>);
@ -428,6 +602,16 @@ impl TreeId {
}
}
pub fn item_tree_with_source_map(
&self,
db: &dyn DefDatabase,
) -> (Arc<ItemTree>, Arc<ItemTreeSourceMaps>) {
match self.block {
Some(block) => db.block_item_tree_with_source_map(block),
None => db.file_item_tree_with_source_map(self.file),
}
}
pub fn file_id(self) -> HirFileId {
self.file
}
@ -460,6 +644,13 @@ impl<N> ItemTreeId<N> {
self.tree.item_tree(db)
}
pub fn item_tree_with_source_map(
self,
db: &dyn DefDatabase,
) -> (Arc<ItemTree>, Arc<ItemTreeSourceMaps>) {
self.tree.item_tree_with_source_map(db)
}
pub fn resolved<R>(self, db: &dyn DefDatabase, cb: impl FnOnce(&N) -> R) -> R
where
ItemTree: Index<FileItemTreeId<N>, Output = N>,
@ -592,7 +783,7 @@ macro_rules! mod_items {
$(
impl GenericsItemTreeNode for $typ {
fn generic_params(&self) -> &Interned<GenericParams> {
fn generic_params(&self) -> &Arc<GenericParams> {
&self.$generic_params
}
}
@ -730,17 +921,18 @@ pub struct ExternBlock {
pub struct Function {
pub name: Name,
pub visibility: RawVisibilityId,
pub explicit_generic_params: Interned<GenericParams>,
pub explicit_generic_params: Arc<GenericParams>,
pub abi: Option<Symbol>,
pub params: Box<[Param]>,
pub ret_type: Interned<TypeRef>,
pub ret_type: TypeRefId,
pub ast_id: FileAstId<ast::Fn>,
pub types_map: Arc<TypesMap>,
pub(crate) flags: FnFlags,
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Param {
pub type_ref: Option<Interned<TypeRef>>,
pub type_ref: Option<TypeRefId>,
}
bitflags::bitflags! {
@ -761,26 +953,28 @@ bitflags::bitflags! {
pub struct Struct {
pub name: Name,
pub visibility: RawVisibilityId,
pub generic_params: Interned<GenericParams>,
pub generic_params: Arc<GenericParams>,
pub fields: Box<[Field]>,
pub shape: FieldsShape,
pub ast_id: FileAstId<ast::Struct>,
pub types_map: Arc<TypesMap>,
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct Union {
pub name: Name,
pub visibility: RawVisibilityId,
pub generic_params: Interned<GenericParams>,
pub generic_params: Arc<GenericParams>,
pub fields: Box<[Field]>,
pub ast_id: FileAstId<ast::Union>,
pub types_map: Arc<TypesMap>,
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct Enum {
pub name: Name,
pub visibility: RawVisibilityId,
pub generic_params: Interned<GenericParams>,
pub generic_params: Arc<GenericParams>,
pub variants: Range<FileItemTreeId<Variant>>,
pub ast_id: FileAstId<ast::Enum>,
}
@ -791,6 +985,7 @@ pub struct Variant {
pub fields: Box<[Field]>,
pub shape: FieldsShape,
pub ast_id: FileAstId<ast::Variant>,
pub types_map: Arc<TypesMap>,
}
#[derive(Debug, Copy, Clone, PartialEq, Eq)]
@ -804,7 +999,7 @@ pub enum FieldsShape {
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Field {
pub name: Name,
pub type_ref: Interned<TypeRef>,
pub type_ref: TypeRefId,
pub visibility: RawVisibilityId,
}
@ -813,9 +1008,10 @@ pub struct Const {
/// `None` for `const _: () = ();`
pub name: Option<Name>,
pub visibility: RawVisibilityId,
pub type_ref: Interned<TypeRef>,
pub type_ref: TypeRefId,
pub ast_id: FileAstId<ast::Const>,
pub has_body: bool,
pub types_map: Arc<TypesMap>,
}
#[derive(Debug, Clone, Eq, PartialEq)]
@ -826,15 +1022,16 @@ pub struct Static {
pub mutable: bool,
pub has_safe_kw: bool,
pub has_unsafe_kw: bool,
pub type_ref: Interned<TypeRef>,
pub type_ref: TypeRefId,
pub ast_id: FileAstId<ast::Static>,
pub types_map: Arc<TypesMap>,
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct Trait {
pub name: Name,
pub visibility: RawVisibilityId,
pub generic_params: Interned<GenericParams>,
pub generic_params: Arc<GenericParams>,
pub is_auto: bool,
pub is_unsafe: bool,
pub items: Box<[AssocItem]>,
@ -845,19 +1042,20 @@ pub struct Trait {
pub struct TraitAlias {
pub name: Name,
pub visibility: RawVisibilityId,
pub generic_params: Interned<GenericParams>,
pub generic_params: Arc<GenericParams>,
pub ast_id: FileAstId<ast::TraitAlias>,
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct Impl {
pub generic_params: Interned<GenericParams>,
pub target_trait: Option<Interned<TraitRef>>,
pub self_ty: Interned<TypeRef>,
pub generic_params: Arc<GenericParams>,
pub target_trait: Option<TraitRef>,
pub self_ty: TypeRefId,
pub is_negative: bool,
pub is_unsafe: bool,
pub items: Box<[AssocItem]>,
pub ast_id: FileAstId<ast::Impl>,
pub types_map: Arc<TypesMap>,
}
#[derive(Debug, Clone, PartialEq, Eq)]
@ -865,10 +1063,11 @@ pub struct TypeAlias {
pub name: Name,
pub visibility: RawVisibilityId,
/// Bounds on the type alias itself. Only valid in trait declarations, eg. `type Assoc: Copy;`.
pub bounds: Box<[Interned<TypeBound>]>,
pub generic_params: Interned<GenericParams>,
pub type_ref: Option<Interned<TypeRef>>,
pub bounds: Box<[TypeBound]>,
pub generic_params: Arc<GenericParams>,
pub type_ref: Option<TypeRefId>,
pub ast_id: FileAstId<ast::TypeAlias>,
pub types_map: Arc<TypesMap>,
}
#[derive(Debug, Clone, Eq, PartialEq)]

388
crates/hir-def/src/item_tree/lower.rs
View file

@ -1,12 +1,18 @@
//! AST -> `ItemTree` lowering code.
use std::collections::hash_map::Entry;
use std::{cell::OnceCell, collections::hash_map::Entry};
use hir_expand::{mod_path::path, name::AsName, span_map::SpanMapRef, HirFileId};
use hir_expand::{
mod_path::path,
name::AsName,
span_map::{SpanMap, SpanMapRef},
HirFileId,
};
use intern::{sym, Symbol};
use la_arena::Arena;
use rustc_hash::FxHashMap;
use span::{AstIdMap, SyntaxContextId};
use stdx::thin_vec::ThinVec;
use syntax::{
ast::{self, HasModuleItem, HasName, HasTypeBounds, IsString},
AstNode,
@ -18,14 +24,19 @@ use crate::{
generics::{GenericParams, GenericParamsCollector, TypeParamData, TypeParamProvenance},
item_tree::{
AssocItem, AttrOwner, Const, Either, Enum, ExternBlock, ExternCrate, Field, FieldParent,
FieldsShape, FileItemTreeId, FnFlags, Function, GenericArgs, GenericModItem, Idx, Impl,
ImportAlias, Interned, ItemTree, ItemTreeData, Macro2, MacroCall, MacroRules, Mod, ModItem,
FieldsShape, FileItemTreeId, FnFlags, Function, GenericArgs, GenericItemSourceMapBuilder,
GenericModItem, Idx, Impl, ImportAlias, Interned, ItemTree, ItemTreeData,
ItemTreeSourceMaps, ItemTreeSourceMapsBuilder, Macro2, MacroCall, MacroRules, Mod, ModItem,
ModKind, ModPath, Mutability, Name, Param, Path, Range, RawAttrs, RawIdx, RawVisibilityId,
Static, Struct, StructKind, Trait, TraitAlias, TypeAlias, Union, Use, UseTree, UseTreeKind,
Variant,
},
lower::LowerCtx,
path::AssociatedTypeBinding,
type_ref::{LifetimeRef, TraitBoundModifier, TraitRef, TypeBound, TypeRef},
type_ref::{
LifetimeRef, RefType, TraitBoundModifier, TraitRef, TypeBound, TypeRef, TypeRefId,
TypesMap, TypesSourceMap,
},
visibility::RawVisibility,
LocalLifetimeParamId, LocalTypeOrConstParamId,
};
@ -40,7 +51,9 @@ pub(super) struct Ctx<'a> {
source_ast_id_map: Arc<AstIdMap>,
generic_param_attr_buffer:
FxHashMap<Either<LocalTypeOrConstParamId, LocalLifetimeParamId>, RawAttrs>,
body_ctx: crate::lower::LowerCtx<'a>,
span_map: OnceCell<SpanMap>,
file: HirFileId,
source_maps: ItemTreeSourceMapsBuilder,
}
impl<'a> Ctx<'a> {
@ -50,22 +63,49 @@ impl<'a> Ctx<'a> {
tree: ItemTree::default(),
generic_param_attr_buffer: FxHashMap::default(),
source_ast_id_map: db.ast_id_map(file),
body_ctx: crate::lower::LowerCtx::new(db, file),
file,
span_map: OnceCell::new(),
source_maps: ItemTreeSourceMapsBuilder::default(),
}
}
pub(super) fn span_map(&self) -> SpanMapRef<'_> {
self.body_ctx.span_map()
self.span_map.get_or_init(|| self.db.span_map(self.file)).as_ref()
}
pub(super) fn lower_module_items(mut self, item_owner: &dyn HasModuleItem) -> ItemTree {
fn body_ctx<'b, 'c>(
&self,
types_map: &'b mut TypesMap,
types_source_map: &'b mut TypesSourceMap,
) -> LowerCtx<'c>
where
'a: 'c,
'b: 'c,
{
// FIXME: This seems a bit wasteful that if `LowerCtx` will initialize the span map we won't benefit.
LowerCtx::with_span_map_cell(
self.db,
self.file,
self.span_map.clone(),
types_map,
types_source_map,
)
}
pub(super) fn lower_module_items(
mut self,
item_owner: &dyn HasModuleItem,
) -> (ItemTree, ItemTreeSourceMaps) {
self.tree.top_level =
item_owner.items().flat_map(|item| self.lower_mod_item(&item)).collect();
assert!(self.generic_param_attr_buffer.is_empty());
self.tree
(self.tree, self.source_maps.build())
}
pub(super) fn lower_macro_stmts(mut self, stmts: ast::MacroStmts) -> ItemTree {
pub(super) fn lower_macro_stmts(
mut self,
stmts: ast::MacroStmts,
) -> (ItemTree, ItemTreeSourceMaps) {
self.tree.top_level = stmts
.statements()
.filter_map(|stmt| {
@ -96,10 +136,10 @@ impl<'a> Ctx<'a> {
}
assert!(self.generic_param_attr_buffer.is_empty());
self.tree
(self.tree, self.source_maps.build())
}
pub(super) fn lower_block(mut self, block: &ast::BlockExpr) -> ItemTree {
pub(super) fn lower_block(mut self, block: &ast::BlockExpr) -> (ItemTree, ItemTreeSourceMaps) {
self.tree
.attrs
.insert(AttrOwner::TopLevel, RawAttrs::new(self.db.upcast(), block, self.span_map()));
@ -125,7 +165,7 @@ impl<'a> Ctx<'a> {
}
assert!(self.generic_param_attr_buffer.is_empty());
self.tree
(self.tree, self.source_maps.build())
}
fn data(&mut self) -> &mut ItemTreeData {
@ -144,7 +184,7 @@ impl<'a> Ctx<'a> {
ast::Item::Module(ast) => self.lower_module(ast)?.into(),
ast::Item::Trait(ast) => self.lower_trait(ast)?.into(),
ast::Item::TraitAlias(ast) => self.lower_trait_alias(ast)?.into(),
ast::Item::Impl(ast) => self.lower_impl(ast)?.into(),
ast::Item::Impl(ast) => self.lower_impl(ast).into(),
ast::Item::Use(ast) => self.lower_use(ast)?.into(),
ast::Item::ExternCrate(ast) => self.lower_extern_crate(ast)?.into(),
ast::Item::MacroCall(ast) => self.lower_macro_call(ast)?.into(),
@ -159,12 +199,14 @@ impl<'a> Ctx<'a> {
}
fn add_attrs(&mut self, item: AttrOwner, attrs: RawAttrs) {
match self.tree.attrs.entry(item) {
Entry::Occupied(mut entry) => {
*entry.get_mut() = entry.get().merge(attrs);
}
Entry::Vacant(entry) => {
entry.insert(attrs);
if !attrs.is_empty() {
match self.tree.attrs.entry(item) {
Entry::Occupied(mut entry) => {
*entry.get_mut() = entry.get().merge(attrs);
}
Entry::Vacant(entry) => {
entry.insert(attrs);
}
}
}
}
@ -190,13 +232,31 @@ impl<'a> Ctx<'a> {
}
fn lower_struct(&mut self, strukt: &ast::Struct) -> Option<FileItemTreeId<Struct>> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let visibility = self.lower_visibility(strukt);
let name = strukt.name()?.as_name();
let ast_id = self.source_ast_id_map.ast_id(strukt);
let (fields, kind, attrs) = self.lower_fields(&strukt.kind());
let generic_params = self.lower_generic_params(HasImplicitSelf::No, strukt);
let res = Struct { name, visibility, generic_params, fields, shape: kind, ast_id };
let (fields, kind, attrs) = self.lower_fields(&strukt.kind(), &body_ctx);
let (generic_params, generics_source_map) =
self.lower_generic_params(HasImplicitSelf::No, strukt);
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let res = Struct {
name,
visibility,
generic_params,
fields,
shape: kind,
ast_id,
types_map: Arc::new(types_map),
};
let id = id(self.data().structs.alloc(res));
self.source_maps.structs.push(GenericItemSourceMapBuilder {
item: types_source_map,
generics: generics_source_map,
});
for (idx, attr) in attrs {
self.add_attrs(
AttrOwner::Field(
@ -213,6 +273,7 @@ impl<'a> Ctx<'a> {
fn lower_fields(
&mut self,
strukt_kind: &ast::StructKind,
body_ctx: &LowerCtx<'_>,
) -> (Box<[Field]>, FieldsShape, Vec<(usize, RawAttrs)>) {
match strukt_kind {
ast::StructKind::Record(it) => {
@ -220,7 +281,7 @@ impl<'a> Ctx<'a> {
let mut attrs = vec![];
for (i, field) in it.fields().enumerate() {
let data = self.lower_record_field(&field);
let data = self.lower_record_field(&field, body_ctx);
fields.push(data);
let attr = RawAttrs::new(self.db.upcast(), &field, self.span_map());
if !attr.is_empty() {
@ -234,7 +295,7 @@ impl<'a> Ctx<'a> {
let mut attrs = vec![];
for (i, field) in it.fields().enumerate() {
let data = self.lower_tuple_field(i, &field);
let data = self.lower_tuple_field(i, &field, body_ctx);
fields.push(data);
let attr = RawAttrs::new(self.db.upcast(), &field, self.span_map());
if !attr.is_empty() {
@ -247,35 +308,59 @@ impl<'a> Ctx<'a> {
}
}
fn lower_record_field(&mut self, field: &ast::RecordField) -> Field {
fn lower_record_field(&mut self, field: &ast::RecordField, body_ctx: &LowerCtx<'_>) -> Field {
let name = match field.name() {
Some(name) => name.as_name(),
None => Name::missing(),
};
let visibility = self.lower_visibility(field);
let type_ref = self.lower_type_ref_opt(field.ty());
let type_ref = TypeRef::from_ast_opt(body_ctx, field.ty());
Field { name, type_ref, visibility }
}
fn lower_tuple_field(&mut self, idx: usize, field: &ast::TupleField) -> Field {
fn lower_tuple_field(
&mut self,
idx: usize,
field: &ast::TupleField,
body_ctx: &LowerCtx<'_>,
) -> Field {
let name = Name::new_tuple_field(idx);
let visibility = self.lower_visibility(field);
let type_ref = self.lower_type_ref_opt(field.ty());
let type_ref = TypeRef::from_ast_opt(body_ctx, field.ty());
Field { name, type_ref, visibility }
}
fn lower_union(&mut self, union: &ast::Union) -> Option<FileItemTreeId<Union>> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let visibility = self.lower_visibility(union);
let name = union.name()?.as_name();
let ast_id = self.source_ast_id_map.ast_id(union);
let (fields, _, attrs) = match union.record_field_list() {
Some(record_field_list) => self.lower_fields(&StructKind::Record(record_field_list)),
Some(record_field_list) => {
self.lower_fields(&StructKind::Record(record_field_list), &body_ctx)
}
None => (Box::default(), FieldsShape::Record, Vec::default()),
};
let generic_params = self.lower_generic_params(HasImplicitSelf::No, union);
let res = Union { name, visibility, generic_params, fields, ast_id };
let (generic_params, generics_source_map) =
self.lower_generic_params(HasImplicitSelf::No, union);
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let res = Union {
name,
visibility,
generic_params,
fields,
ast_id,
types_map: Arc::new(types_map),
};
let id = id(self.data().unions.alloc(res));
self.source_maps.unions.push(GenericItemSourceMapBuilder {
item: types_source_map,
generics: generics_source_map,
});
for (idx, attr) in attrs {
self.add_attrs(
AttrOwner::Field(
@ -299,9 +384,11 @@ impl<'a> Ctx<'a> {
FileItemTreeId(self.next_variant_idx())..FileItemTreeId(self.next_variant_idx())
}
};
let generic_params = self.lower_generic_params(HasImplicitSelf::No, enum_);
let (generic_params, generics_source_map) =
self.lower_generic_params(HasImplicitSelf::No, enum_);
let res = Enum { name, visibility, generic_params, variants, ast_id };
let id = id(self.data().enums.alloc(res));
self.source_maps.enum_generics.push(generics_source_map);
self.write_generic_params_attributes(id.into());
Some(id)
}
@ -320,14 +407,20 @@ impl<'a> Ctx<'a> {
}
fn lower_variant(&mut self, variant: &ast::Variant) -> Idx<Variant> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let name = match variant.name() {
Some(name) => name.as_name(),
None => Name::missing(),
};
let (fields, kind, attrs) = self.lower_fields(&variant.kind());
let (fields, kind, attrs) = self.lower_fields(&variant.kind(), &body_ctx);
let ast_id = self.source_ast_id_map.ast_id(variant);
let res = Variant { name, fields, shape: kind, ast_id };
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let res = Variant { name, fields, shape: kind, ast_id, types_map: Arc::new(types_map) };
let id = self.data().variants.alloc(res);
self.source_maps.variants.push(types_source_map);
for (idx, attr) in attrs {
self.add_attrs(
AttrOwner::Field(
@ -341,6 +434,10 @@ impl<'a> Ctx<'a> {
}
fn lower_function(&mut self, func: &ast::Fn) -> Option<FileItemTreeId<Function>> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let visibility = self.lower_visibility(func);
let name = func.name()?.as_name();
@ -360,27 +457,31 @@ impl<'a> Ctx<'a> {
RawAttrs::new(self.db.upcast(), &self_param, self.span_map()),
);
let self_type = match self_param.ty() {
Some(type_ref) => TypeRef::from_ast(&self.body_ctx, type_ref),
Some(type_ref) => TypeRef::from_ast(&body_ctx, type_ref),
None => {
let self_type =
TypeRef::Path(Name::new_symbol_root(sym::Self_.clone()).into());
let self_type = body_ctx.alloc_type_ref_desugared(TypeRef::Path(
Name::new_symbol_root(sym::Self_.clone()).into(),
));
match self_param.kind() {
ast::SelfParamKind::Owned => self_type,
ast::SelfParamKind::Ref => TypeRef::Reference(
Box::new(self_type),
self_param.lifetime().as_ref().map(LifetimeRef::new),
Mutability::Shared,
ast::SelfParamKind::Ref => body_ctx.alloc_type_ref_desugared(
TypeRef::Reference(Box::new(RefType {
ty: self_type,
lifetime: self_param.lifetime().as_ref().map(LifetimeRef::new),
mutability: Mutability::Shared,
})),
),
ast::SelfParamKind::MutRef => TypeRef::Reference(
Box::new(self_type),
self_param.lifetime().as_ref().map(LifetimeRef::new),
Mutability::Mut,
ast::SelfParamKind::MutRef => body_ctx.alloc_type_ref_desugared(
TypeRef::Reference(Box::new(RefType {
ty: self_type,
lifetime: self_param.lifetime().as_ref().map(LifetimeRef::new),
mutability: Mutability::Mut,
})),
),
}
}
};
let type_ref = Interned::new(self_type);
params.push(Param { type_ref: Some(type_ref) });
params.push(Param { type_ref: Some(self_type) });
has_self_param = true;
}
for param in param_list.params() {
@ -391,9 +492,8 @@ impl<'a> Ctx<'a> {
Param { type_ref: None }
}
None => {
let type_ref = TypeRef::from_ast_opt(&self.body_ctx, param.ty());
let ty = Interned::new(type_ref);
Param { type_ref: Some(ty) }
let type_ref = TypeRef::from_ast_opt(&body_ctx, param.ty());
Param { type_ref: Some(type_ref) }
}
};
params.push(param);
@ -402,17 +502,17 @@ impl<'a> Ctx<'a> {
let ret_type = match func.ret_type() {
Some(rt) => match rt.ty() {
Some(type_ref) => TypeRef::from_ast(&self.body_ctx, type_ref),
None if rt.thin_arrow_token().is_some() => TypeRef::Error,
None => TypeRef::unit(),
Some(type_ref) => TypeRef::from_ast(&body_ctx, type_ref),
None if rt.thin_arrow_token().is_some() => body_ctx.alloc_error_type(),
None => body_ctx.alloc_type_ref_desugared(TypeRef::unit()),
},
None => TypeRef::unit(),
None => body_ctx.alloc_type_ref_desugared(TypeRef::unit()),
};
let ret_type = if func.async_token().is_some() {
let future_impl = desugar_future_path(ret_type);
let ty_bound = Interned::new(TypeBound::Path(future_impl, TraitBoundModifier::None));
TypeRef::ImplTrait(vec![ty_bound])
let ty_bound = TypeBound::Path(future_impl, TraitBoundModifier::None);
body_ctx.alloc_type_ref_desugared(TypeRef::ImplTrait(ThinVec::from_iter([ty_bound])))
} else {
ret_type
};
@ -447,18 +547,27 @@ impl<'a> Ctx<'a> {
flags |= FnFlags::IS_VARARGS;
}
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let (generic_params, generics_source_map) =
self.lower_generic_params(HasImplicitSelf::No, func);
let res = Function {
name,
visibility,
explicit_generic_params: self.lower_generic_params(HasImplicitSelf::No, func),
explicit_generic_params: generic_params,
abi,
params: params.into_boxed_slice(),
ret_type: Interned::new(ret_type),
ret_type,
ast_id,
types_map: Arc::new(types_map),
flags,
};
let id = id(self.data().functions.alloc(res));
self.source_maps.functions.push(GenericItemSourceMapBuilder {
item: types_source_map,
generics: generics_source_map,
});
for (idx, attr) in attrs {
self.add_attrs(AttrOwner::Param(id, Idx::from_raw(RawIdx::from_u32(idx as u32))), attr);
}
@ -470,37 +579,82 @@ impl<'a> Ctx<'a> {
&mut self,
type_alias: &ast::TypeAlias,
) -> Option<FileItemTreeId<TypeAlias>> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let name = type_alias.name()?.as_name();
let type_ref = type_alias.ty().map(|it| self.lower_type_ref(&it));
let type_ref = type_alias.ty().map(|it| TypeRef::from_ast(&body_ctx, it));
let visibility = self.lower_visibility(type_alias);
let bounds = self.lower_type_bounds(type_alias);
let bounds = self.lower_type_bounds(type_alias, &body_ctx);
let ast_id = self.source_ast_id_map.ast_id(type_alias);
let generic_params = self.lower_generic_params(HasImplicitSelf::No, type_alias);
let res = TypeAlias { name, visibility, bounds, generic_params, type_ref, ast_id };
let (generic_params, generics_source_map) =
self.lower_generic_params(HasImplicitSelf::No, type_alias);
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let res = TypeAlias {
name,
visibility,
bounds,
generic_params,
type_ref,
ast_id,
types_map: Arc::new(types_map),
};
let id = id(self.data().type_aliases.alloc(res));
self.source_maps.type_aliases.push(GenericItemSourceMapBuilder {
item: types_source_map,
generics: generics_source_map,
});
self.write_generic_params_attributes(id.into());
Some(id)
}
fn lower_static(&mut self, static_: &ast::Static) -> Option<FileItemTreeId<Static>> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let name = static_.name()?.as_name();
let type_ref = self.lower_type_ref_opt(static_.ty());
let type_ref = TypeRef::from_ast_opt(&body_ctx, static_.ty());
let visibility = self.lower_visibility(static_);
let mutable = static_.mut_token().is_some();
let has_safe_kw = static_.safe_token().is_some();
let has_unsafe_kw = static_.unsafe_token().is_some();
let ast_id = self.source_ast_id_map.ast_id(static_);
let res =
Static { name, visibility, mutable, type_ref, ast_id, has_safe_kw, has_unsafe_kw };
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let res = Static {
name,
visibility,
mutable,
type_ref,
ast_id,
has_safe_kw,
has_unsafe_kw,
types_map: Arc::new(types_map),
};
self.source_maps.statics.push(types_source_map);
Some(id(self.data().statics.alloc(res)))
}
fn lower_const(&mut self, konst: &ast::Const) -> FileItemTreeId<Const> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let name = konst.name().map(|it| it.as_name());
let type_ref = self.lower_type_ref_opt(konst.ty());
let type_ref = TypeRef::from_ast_opt(&body_ctx, konst.ty());
let visibility = self.lower_visibility(konst);
let ast_id = self.source_ast_id_map.ast_id(konst);
let res = Const { name, visibility, type_ref, ast_id, has_body: konst.body().is_some() };
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let res = Const {
name,
visibility,
type_ref,
ast_id,
has_body: konst.body().is_some(),
types_map: Arc::new(types_map),
};
self.source_maps.consts.push(types_source_map);
id(self.data().consts.alloc(res))
}
@ -539,10 +693,11 @@ impl<'a> Ctx<'a> {
.filter_map(|item_node| self.lower_assoc_item(&item_node))
.collect();
let generic_params =
let (generic_params, generics_source_map) =
self.lower_generic_params(HasImplicitSelf::Yes(trait_def.type_bound_list()), trait_def);
let def = Trait { name, visibility, generic_params, is_auto, is_unsafe, items, ast_id };
let id = id(self.data().traits.alloc(def));
self.source_maps.trait_generics.push(generics_source_map);
self.write_generic_params_attributes(id.into());
Some(id)
}
@ -554,24 +709,29 @@ impl<'a> Ctx<'a> {
let name = trait_alias_def.name()?.as_name();
let visibility = self.lower_visibility(trait_alias_def);
let ast_id = self.source_ast_id_map.ast_id(trait_alias_def);
let generic_params = self.lower_generic_params(
let (generic_params, generics_source_map) = self.lower_generic_params(
HasImplicitSelf::Yes(trait_alias_def.type_bound_list()),
trait_alias_def,
);
let alias = TraitAlias { name, visibility, generic_params, ast_id };
let id = id(self.data().trait_aliases.alloc(alias));
self.source_maps.trait_alias_generics.push(generics_source_map);
self.write_generic_params_attributes(id.into());
Some(id)
}
fn lower_impl(&mut self, impl_def: &ast::Impl) -> Option<FileItemTreeId<Impl>> {
fn lower_impl(&mut self, impl_def: &ast::Impl) -> FileItemTreeId<Impl> {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
let ast_id = self.source_ast_id_map.ast_id(impl_def);
// FIXME: If trait lowering fails, due to a non PathType for example, we treat this impl
// as if it was an non-trait impl. Ideally we want to create a unique missing ref that only
// equals itself.
let self_ty = self.lower_type_ref(&impl_def.self_ty()?);
let target_trait = impl_def.trait_().and_then(|tr| self.lower_trait_ref(&tr));
let self_ty = TypeRef::from_ast_opt(&body_ctx, impl_def.self_ty());
let target_trait = impl_def.trait_().and_then(|tr| TraitRef::from_ast(&body_ctx, tr));
let is_negative = impl_def.excl_token().is_some();
let is_unsafe = impl_def.unsafe_token().is_some();
@ -584,12 +744,27 @@ impl<'a> Ctx<'a> {
.collect();
// Note that trait impls don't get implicit `Self` unlike traits, because here they are a
// type alias rather than a type parameter, so this is handled by the resolver.
let generic_params = self.lower_generic_params(HasImplicitSelf::No, impl_def);
let res =
Impl { generic_params, target_trait, self_ty, is_negative, is_unsafe, items, ast_id };
let (generic_params, generics_source_map) =
self.lower_generic_params(HasImplicitSelf::No, impl_def);
types_map.shrink_to_fit();
types_source_map.shrink_to_fit();
let res = Impl {
generic_params,
target_trait,
self_ty,
is_negative,
is_unsafe,
items,
ast_id,
types_map: Arc::new(types_map),
};
let id = id(self.data().impls.alloc(res));
self.source_maps.impls.push(GenericItemSourceMapBuilder {
item: types_source_map,
generics: generics_source_map,
});
self.write_generic_params_attributes(id.into());
Some(id)
id
}
fn lower_use(&mut self, use_item: &ast::Use) -> Option<FileItemTreeId<Use>> {
@ -692,14 +867,17 @@ impl<'a> Ctx<'a> {
&mut self,
has_implicit_self: HasImplicitSelf,
node: &dyn ast::HasGenericParams,
) -> Interned<GenericParams> {
) -> (Arc<GenericParams>, TypesSourceMap) {
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let body_ctx = self.body_ctx(&mut types_map, &mut types_source_map);
debug_assert!(self.generic_param_attr_buffer.is_empty(),);
let add_param_attrs = |item: Either<LocalTypeOrConstParamId, LocalLifetimeParamId>,
param| {
let attrs = RawAttrs::new(self.db.upcast(), &param, self.body_ctx.span_map());
let attrs = RawAttrs::new(self.db.upcast(), &param, body_ctx.span_map());
debug_assert!(self.generic_param_attr_buffer.insert(item, attrs).is_none());
};
self.body_ctx.take_impl_traits_bounds();
body_ctx.take_impl_traits_bounds();
let mut generics = GenericParamsCollector::default();
if let HasImplicitSelf::Yes(bounds) = has_implicit_self {
@ -715,23 +893,29 @@ impl<'a> Ctx<'a> {
// add super traits as bounds on Self
// i.e., `trait Foo: Bar` is equivalent to `trait Foo where Self: Bar`
generics.fill_bounds(
&self.body_ctx,
&body_ctx,
bounds,
Either::Left(TypeRef::Path(Name::new_symbol_root(sym::Self_.clone()).into())),
Either::Left(body_ctx.alloc_type_ref_desugared(TypeRef::Path(
Name::new_symbol_root(sym::Self_.clone()).into(),
))),
);
}
generics.fill(&self.body_ctx, node, add_param_attrs);
generics.fill(&body_ctx, node, add_param_attrs);
Interned::new(generics.finish())
let generics = generics.finish(types_map, &mut types_source_map);
(generics, types_source_map)
}
fn lower_type_bounds(&mut self, node: &dyn ast::HasTypeBounds) -> Box<[Interned<TypeBound>]> {
fn lower_type_bounds(
&mut self,
node: &dyn ast::HasTypeBounds,
body_ctx: &LowerCtx<'_>,
) -> Box<[TypeBound]> {
match node.type_bound_list() {
Some(bound_list) => bound_list
.bounds()
.map(|it| Interned::new(TypeBound::from_ast(&self.body_ctx, it)))
.collect(),
Some(bound_list) => {
bound_list.bounds().map(|it| TypeBound::from_ast(body_ctx, it)).collect()
}
None => Box::default(),
}
}
@ -743,23 +927,6 @@ impl<'a> Ctx<'a> {
self.data().vis.alloc(vis)
}
fn lower_trait_ref(&mut self, trait_ref: &ast::Type) -> Option<Interned<TraitRef>> {
let trait_ref = TraitRef::from_ast(&self.body_ctx, trait_ref.clone())?;
Some(Interned::new(trait_ref))
}
fn lower_type_ref(&mut self, type_ref: &ast::Type) -> Interned<TypeRef> {
let tyref = TypeRef::from_ast(&self.body_ctx, type_ref.clone());
Interned::new(tyref)
}
fn lower_type_ref_opt(&mut self, type_ref: Option<ast::Type>) -> Interned<TypeRef> {
match type_ref.map(|ty| self.lower_type_ref(&ty)) {
Some(it) => it,
None => Interned::new(TypeRef::Error),
}
}
fn next_variant_idx(&self) -> Idx<Variant> {
Idx::from_raw(RawIdx::from(
self.tree.data.as_ref().map_or(0, |data| data.variants.len() as u32),
@ -767,7 +934,7 @@ impl<'a> Ctx<'a> {
}
}
fn desugar_future_path(orig: TypeRef) -> Path {
fn desugar_future_path(orig: TypeRefId) -> Path {
let path = path![core::future::Future];
let mut generic_args: Vec<_> =
std::iter::repeat(None).take(path.segments().len() - 1).collect();
@ -777,10 +944,7 @@ fn desugar_future_path(orig: TypeRef) -> Path {
type_ref: Some(orig),
bounds: Box::default(),
};
generic_args.push(Some(Interned::new(GenericArgs {
bindings: Box::new([binding]),
..GenericArgs::empty()
})));
generic_args.push(Some(GenericArgs { bindings: Box::new([binding]), ..GenericArgs::empty() }));
Path::from_known_path(path, generic_args)
}

100
crates/hir-def/src/item_tree/pretty.rs
View file

@ -10,11 +10,12 @@ use crate::{
item_tree::{
AttrOwner, Const, DefDatabase, Enum, ExternBlock, ExternCrate, Field, FieldParent,
FieldsShape, FileItemTreeId, FnFlags, Function, GenericModItem, GenericParams, Impl,
Interned, ItemTree, Macro2, MacroCall, MacroRules, Mod, ModItem, ModKind, Param, Path,
RawAttrs, RawVisibilityId, Static, Struct, Trait, TraitAlias, TypeAlias, TypeBound,
TypeRef, Union, Use, UseTree, UseTreeKind, Variant,
ItemTree, Macro2, MacroCall, MacroRules, Mod, ModItem, ModKind, Param, Path, RawAttrs,
RawVisibilityId, Static, Struct, Trait, TraitAlias, TypeAlias, TypeBound, Union, Use,
UseTree, UseTreeKind, Variant,
},
pretty::{print_path, print_type_bounds, print_type_ref},
type_ref::{TypeRefId, TypesMap},
visibility::RawVisibility,
};
@ -121,7 +122,13 @@ impl Printer<'_> {
};
}
fn print_fields(&mut self, parent: FieldParent, kind: FieldsShape, fields: &[Field]) {
fn print_fields(
&mut self,
parent: FieldParent,
kind: FieldsShape,
fields: &[Field],
map: &TypesMap,
) {
let edition = self.edition;
match kind {
FieldsShape::Record => {
@ -135,7 +142,7 @@ impl Printer<'_> {
);
this.print_visibility(*visibility);
w!(this, "{}: ", name.display(self.db.upcast(), edition));
this.print_type_ref(type_ref);
this.print_type_ref(*type_ref, map);
wln!(this, ",");
}
});
@ -151,7 +158,7 @@ impl Printer<'_> {
);
this.print_visibility(*visibility);
w!(this, "{}: ", name.display(self.db.upcast(), edition));
this.print_type_ref(type_ref);
this.print_type_ref(*type_ref, map);
wln!(this, ",");
}
});
@ -167,20 +174,21 @@ impl Printer<'_> {
kind: FieldsShape,
fields: &[Field],
params: &GenericParams,
map: &TypesMap,
) {
match kind {
FieldsShape::Record => {
if self.print_where_clause(params) {
wln!(self);
}
self.print_fields(parent, kind, fields);
self.print_fields(parent, kind, fields, map);
}
FieldsShape::Unit => {
self.print_where_clause(params);
self.print_fields(parent, kind, fields);
self.print_fields(parent, kind, fields, map);
}
FieldsShape::Tuple => {
self.print_fields(parent, kind, fields);
self.print_fields(parent, kind, fields, map);
self.print_where_clause(params);
}
}
@ -262,6 +270,7 @@ impl Printer<'_> {
params,
ret_type,
ast_id,
types_map,
flags,
} = &self.tree[it];
self.print_ast_id(ast_id.erase());
@ -298,7 +307,7 @@ impl Printer<'_> {
w!(this, "self: ");
}
if let Some(type_ref) = type_ref {
this.print_type_ref(type_ref);
this.print_type_ref(*type_ref, types_map);
} else {
wln!(this, "...");
}
@ -307,7 +316,7 @@ impl Printer<'_> {
});
}
w!(self, ") -> ");
self.print_type_ref(ret_type);
self.print_type_ref(*ret_type, types_map);
self.print_where_clause(explicit_generic_params);
if flags.contains(FnFlags::HAS_BODY) {
wln!(self, " {{ ... }}");
@ -316,8 +325,15 @@ impl Printer<'_> {
}
}
ModItem::Struct(it) => {
let Struct { visibility, name, fields, shape: kind, generic_params, ast_id } =
&self.tree[it];
let Struct {
visibility,
name,
fields,
shape: kind,
generic_params,
ast_id,
types_map,
} = &self.tree[it];
self.print_ast_id(ast_id.erase());
self.print_visibility(*visibility);
w!(self, "struct {}", name.display(self.db.upcast(), self.edition));
@ -327,6 +343,7 @@ impl Printer<'_> {
*kind,
fields,
generic_params,
types_map,
);
if matches!(kind, FieldsShape::Record) {
wln!(self);
@ -335,7 +352,8 @@ impl Printer<'_> {
}
}
ModItem::Union(it) => {
let Union { name, visibility, fields, generic_params, ast_id } = &self.tree[it];
let Union { name, visibility, fields, generic_params, ast_id, types_map } =
&self.tree[it];
self.print_ast_id(ast_id.erase());
self.print_visibility(*visibility);
w!(self, "union {}", name.display(self.db.upcast(), self.edition));
@ -345,6 +363,7 @@ impl Printer<'_> {
FieldsShape::Record,
fields,
generic_params,
types_map,
);
wln!(self);
}
@ -358,18 +377,20 @@ impl Printer<'_> {
let edition = self.edition;
self.indented(|this| {
for variant in FileItemTreeId::range_iter(variants.clone()) {
let Variant { name, fields, shape: kind, ast_id } = &this.tree[variant];
let Variant { name, fields, shape: kind, ast_id, types_map } =
&this.tree[variant];
this.print_ast_id(ast_id.erase());
this.print_attrs_of(variant, "\n");
w!(this, "{}", name.display(self.db.upcast(), edition));
this.print_fields(FieldParent::Variant(variant), *kind, fields);
this.print_fields(FieldParent::Variant(variant), *kind, fields, types_map);
wln!(this, ",");
}
});
wln!(self, "}}");
}
ModItem::Const(it) => {
let Const { name, visibility, type_ref, ast_id, has_body: _ } = &self.tree[it];
let Const { name, visibility, type_ref, ast_id, has_body: _, types_map } =
&self.tree[it];
self.print_ast_id(ast_id.erase());
self.print_visibility(*visibility);
w!(self, "const ");
@ -378,7 +399,7 @@ impl Printer<'_> {
None => w!(self, "_"),
}
w!(self, ": ");
self.print_type_ref(type_ref);
self.print_type_ref(*type_ref, types_map);
wln!(self, " = _;");
}
ModItem::Static(it) => {
@ -390,6 +411,7 @@ impl Printer<'_> {
ast_id,
has_safe_kw,
has_unsafe_kw,
types_map,
} = &self.tree[it];
self.print_ast_id(ast_id.erase());
self.print_visibility(*visibility);
@ -404,7 +426,7 @@ impl Printer<'_> {
w!(self, "mut ");
}
w!(self, "{}: ", name.display(self.db.upcast(), self.edition));
self.print_type_ref(type_ref);
self.print_type_ref(*type_ref, types_map);
w!(self, " = _;");
wln!(self);
}
@ -449,6 +471,7 @@ impl Printer<'_> {
items,
generic_params,
ast_id,
types_map,
} = &self.tree[it];
self.print_ast_id(ast_id.erase());
if *is_unsafe {
@ -461,10 +484,10 @@ impl Printer<'_> {
w!(self, "!");
}
if let Some(tr) = target_trait {
self.print_path(&tr.path);
self.print_path(&tr.path, types_map);
w!(self, " for ");
}
self.print_type_ref(self_ty);
self.print_type_ref(*self_ty, types_map);
self.print_where_clause_and_opening_brace(generic_params);
self.indented(|this| {
for item in &**items {
@ -474,19 +497,26 @@ impl Printer<'_> {
wln!(self, "}}");
}
ModItem::TypeAlias(it) => {
let TypeAlias { name, visibility, bounds, type_ref, generic_params, ast_id } =
&self.tree[it];
let TypeAlias {
name,
visibility,
bounds,
type_ref,
generic_params,
ast_id,
types_map,
} = &self.tree[it];
self.print_ast_id(ast_id.erase());
self.print_visibility(*visibility);
w!(self, "type {}", name.display(self.db.upcast(), self.edition));
self.print_generic_params(generic_params, it.into());
if !bounds.is_empty() {
w!(self, ": ");
self.print_type_bounds(bounds);
self.print_type_bounds(bounds, types_map);
}
if let Some(ty) = type_ref {
w!(self, " = ");
self.print_type_ref(ty);
self.print_type_ref(*ty, types_map);
}
self.print_where_clause(generic_params);
w!(self, ";");
@ -543,19 +573,19 @@ impl Printer<'_> {
self.blank();
}
fn print_type_ref(&mut self, type_ref: &TypeRef) {
fn print_type_ref(&mut self, type_ref: TypeRefId, map: &TypesMap) {
let edition = self.edition;
print_type_ref(self.db, type_ref, self, edition).unwrap();
print_type_ref(self.db, type_ref, map, self, edition).unwrap();
}
fn print_type_bounds(&mut self, bounds: &[Interned<TypeBound>]) {
fn print_type_bounds(&mut self, bounds: &[TypeBound], map: &TypesMap) {
let edition = self.edition;
print_type_bounds(self.db, bounds, self, edition).unwrap();
print_type_bounds(self.db, bounds, map, self, edition).unwrap();
}
fn print_path(&mut self, path: &Path) {
fn print_path(&mut self, path: &Path, map: &TypesMap) {
let edition = self.edition;
print_path(self.db, path, self, edition).unwrap();
print_path(self.db, path, map, self, edition).unwrap();
}
fn print_generic_params(&mut self, params: &GenericParams, parent: GenericModItem) {
@ -586,7 +616,7 @@ impl Printer<'_> {
},
TypeOrConstParamData::ConstParamData(konst) => {
w!(self, "const {}: ", konst.name.display(self.db.upcast(), self.edition));
self.print_type_ref(&konst.ty);
self.print_type_ref(konst.ty, &params.types_map);
}
}
}
@ -640,14 +670,16 @@ impl Printer<'_> {
};
match target {
WherePredicateTypeTarget::TypeRef(ty) => this.print_type_ref(ty),
WherePredicateTypeTarget::TypeRef(ty) => {
this.print_type_ref(*ty, &params.types_map)
}
WherePredicateTypeTarget::TypeOrConstParam(id) => match params[*id].name() {
Some(name) => w!(this, "{}", name.display(self.db.upcast(), edition)),
None => w!(this, "_anon_{}", id.into_raw()),
},
}
w!(this, ": ");
this.print_type_bounds(std::slice::from_ref(bound));
this.print_type_bounds(std::slice::from_ref(bound), &params.types_map);
}
});
true

8
crates/hir-def/src/lib.rs
View file

@ -1531,11 +1531,3 @@ fn macro_call_as_call_id_with_eager(
pub struct UnresolvedMacro {
pub path: hir_expand::mod_path::ModPath,
}
intern::impl_internable!(
crate::type_ref::TypeRef,
crate::type_ref::TraitRef,
crate::type_ref::TypeBound,
crate::path::GenericArgs,
generics::GenericParams,
);

63
crates/hir-def/src/lower.rs
View file

@ -5,43 +5,53 @@ use hir_expand::{
span_map::{SpanMap, SpanMapRef},
AstId, HirFileId, InFile,
};
use intern::Interned;
use span::{AstIdMap, AstIdNode};
use stdx::thin_vec::ThinVec;
use syntax::ast;
use triomphe::Arc;
use crate::{db::DefDatabase, path::Path, type_ref::TypeBound};
use crate::{
db::DefDatabase,
path::Path,
type_ref::{TypeBound, TypePtr, TypeRef, TypeRefId, TypesMap, TypesSourceMap},
};
pub struct LowerCtx<'a> {
pub db: &'a dyn DefDatabase,
file_id: HirFileId,
span_map: OnceCell<SpanMap>,
ast_id_map: OnceCell<Arc<AstIdMap>>,
impl_trait_bounds: RefCell<Vec<Vec<Interned<TypeBound>>>>,
impl_trait_bounds: RefCell<Vec<ThinVec<TypeBound>>>,
// Prevent nested impl traits like `impl Foo<impl Bar>`.
outer_impl_trait: RefCell<bool>,
types_map: RefCell<(&'a mut TypesMap, &'a mut TypesSourceMap)>,
}
pub(crate) struct OuterImplTraitGuard<'a> {
ctx: &'a LowerCtx<'a>,
pub(crate) struct OuterImplTraitGuard<'a, 'b> {
ctx: &'a LowerCtx<'b>,
old: bool,
}
impl<'a> OuterImplTraitGuard<'a> {
fn new(ctx: &'a LowerCtx<'a>, impl_trait: bool) -> Self {
impl<'a, 'b> OuterImplTraitGuard<'a, 'b> {
fn new(ctx: &'a LowerCtx<'b>, impl_trait: bool) -> Self {
let old = ctx.outer_impl_trait.replace(impl_trait);
Self { ctx, old }
}
}
impl Drop for OuterImplTraitGuard<'_> {
impl Drop for OuterImplTraitGuard<'_, '_> {
fn drop(&mut self) {
self.ctx.outer_impl_trait.replace(self.old);
}
}
impl<'a> LowerCtx<'a> {
pub fn new(db: &'a dyn DefDatabase, file_id: HirFileId) -> Self {
pub fn new(
db: &'a dyn DefDatabase,
file_id: HirFileId,
types_map: &'a mut TypesMap,
types_source_map: &'a mut TypesSourceMap,
) -> Self {
LowerCtx {
db,
file_id,
@ -49,6 +59,7 @@ impl<'a> LowerCtx<'a> {
ast_id_map: OnceCell::new(),
impl_trait_bounds: RefCell::new(Vec::new()),
outer_impl_trait: RefCell::default(),
types_map: RefCell::new((types_map, types_source_map)),
}
}
@ -56,6 +67,8 @@ impl<'a> LowerCtx<'a> {
db: &'a dyn DefDatabase,
file_id: HirFileId,
span_map: OnceCell<SpanMap>,
types_map: &'a mut TypesMap,
types_source_map: &'a mut TypesSourceMap,
) -> Self {
LowerCtx {
db,
@ -64,6 +77,7 @@ impl<'a> LowerCtx<'a> {
ast_id_map: OnceCell::new(),
impl_trait_bounds: RefCell::new(Vec::new()),
outer_impl_trait: RefCell::default(),
types_map: RefCell::new((types_map, types_source_map)),
}
}
@ -82,11 +96,11 @@ impl<'a> LowerCtx<'a> {
)
}
pub fn update_impl_traits_bounds(&self, bounds: Vec<Interned<TypeBound>>) {
pub fn update_impl_traits_bounds(&self, bounds: ThinVec<TypeBound>) {
self.impl_trait_bounds.borrow_mut().push(bounds);
}
pub fn take_impl_traits_bounds(&self) -> Vec<Vec<Interned<TypeBound>>> {
pub fn take_impl_traits_bounds(&self) -> Vec<ThinVec<TypeBound>> {
self.impl_trait_bounds.take()
}
@ -94,7 +108,32 @@ impl<'a> LowerCtx<'a> {
*self.outer_impl_trait.borrow()
}
pub(crate) fn outer_impl_trait_scope(&'a self, impl_trait: bool) -> OuterImplTraitGuard<'a> {
pub(crate) fn outer_impl_trait_scope<'b>(
&'b self,
impl_trait: bool,
) -> OuterImplTraitGuard<'b, 'a> {
OuterImplTraitGuard::new(self, impl_trait)
}
pub(crate) fn alloc_type_ref(&self, type_ref: TypeRef, node: TypePtr) -> TypeRefId {
let mut types_map = self.types_map.borrow_mut();
let (types_map, types_source_map) = &mut *types_map;
let id = types_map.types.alloc(type_ref);
types_source_map.types_map_back.insert(id, InFile::new(self.file_id, node));
id
}
pub(crate) fn alloc_type_ref_desugared(&self, type_ref: TypeRef) -> TypeRefId {
self.types_map.borrow_mut().0.types.alloc(type_ref)
}
pub(crate) fn alloc_error_type(&self) -> TypeRefId {
self.types_map.borrow_mut().0.types.alloc(TypeRef::Error)
}
// FIXME: If we alloc while holding this, well... Bad Things will happen. Need to change this
// to use proper mutability instead of interior mutability.
pub(crate) fn types_map(&self) -> std::cell::Ref<'_, TypesMap> {
std::cell::Ref::map(self.types_map.borrow(), |it| &*it.0)
}
}

5
crates/hir-def/src/nameres/tests/incremental.rs
View file

@ -253,7 +253,8 @@ m!(Z);
let (_, module_data) = crate_def_map.modules.iter().last().unwrap();
assert_eq!(module_data.scope.resolutions().count(), 4);
});
let n_recalculated_item_trees = events.iter().filter(|it| it.contains("item_tree")).count();
let n_recalculated_item_trees =
events.iter().filter(|it| it.contains("item_tree(")).count();
assert_eq!(n_recalculated_item_trees, 6);
let n_reparsed_macros =
events.iter().filter(|it| it.contains("parse_macro_expansion(")).count();
@ -308,7 +309,7 @@ pub type Ty = ();
let events = db.log_executed(|| {
db.file_item_tree(pos.file_id.into());
});
let n_calculated_item_trees = events.iter().filter(|it| it.contains("item_tree")).count();
let n_calculated_item_trees = events.iter().filter(|it| it.contains("item_tree(")).count();
assert_eq!(n_calculated_item_trees, 1);
let n_parsed_files = events.iter().filter(|it| it.contains("parse(")).count();
assert_eq!(n_parsed_files, 1);

168
crates/hir-def/src/path.rs
View file

@ -9,11 +9,12 @@ use std::{
use crate::{
lang_item::LangItemTarget,
lower::LowerCtx,
type_ref::{ConstRef, LifetimeRef, TypeBound, TypeRef},
type_ref::{ConstRef, LifetimeRef, TypeBound, TypeRefId},
};
use hir_expand::name::Name;
use intern::Interned;
use span::Edition;
use stdx::thin_vec::thin_vec_with_header_struct;
use syntax::ast;
pub use hir_expand::mod_path::{path, ModPath, PathKind};
@ -47,20 +48,33 @@ impl Display for ImportAliasDisplay<'_> {
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Path {
/// A normal path
Normal {
/// Type based path like `<T>::foo`.
/// Note that paths like `<Type as Trait>::foo` are desugared to `Trait::<Self=Type>::foo`.
type_anchor: Option<Interned<TypeRef>>,
mod_path: Interned<ModPath>,
/// Invariant: the same len as `self.mod_path.segments` or `None` if all segments are `None`.
generic_args: Option<Box<[Option<Interned<GenericArgs>>]>>,
},
/// `BarePath` is used when the path has neither generics nor type anchor, since the vast majority of paths
/// are in this category, and splitting `Path` this way allows it to be more thin. When the path has either generics
/// or type anchor, it is `Path::Normal` with the generics filled with `None` even if there are none (practically
/// this is not a problem since many more paths have generics than a type anchor).
BarePath(Interned<ModPath>),
/// `Path::Normal` may have empty generics and type anchor (but generic args will be filled with `None`).
Normal(NormalPath),
/// A link to a lang item. It is used in desugaring of things like `it?`. We can show these
/// links via a normal path since they might be private and not accessible in the usage place.
LangItem(LangItemTarget, Option<Name>),
}
// This type is being used a lot, make sure it doesn't grow unintentionally.
#[cfg(target_arch = "x86_64")]
const _: () = {
assert!(size_of::<Path>() == 16);
assert!(size_of::<Option<Path>>() == 16);
};
thin_vec_with_header_struct! {
pub new(pub(crate)) struct NormalPath, NormalPathHeader {
pub generic_args: [Option<GenericArgs>],
pub type_anchor: Option<TypeRefId>,
pub mod_path: Interned<ModPath>; ref,
}
}
/// Generic arguments to a path segment (e.g. the `i32` in `Option<i32>`). This
/// also includes bindings of associated types, like in `Iterator<Item = Foo>`.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
@ -86,20 +100,20 @@ pub struct AssociatedTypeBinding {
pub name: Name,
/// The generic arguments to the associated type. e.g. For `Trait<Assoc<'a, T> = &'a T>`, this
/// would be `['a, T]`.
pub args: Option<Interned<GenericArgs>>,
pub args: Option<GenericArgs>,
/// The type bound to this associated type (in `Item = T`, this would be the
/// `T`). This can be `None` if there are bounds instead.
pub type_ref: Option<TypeRef>,
pub type_ref: Option<TypeRefId>,
/// Bounds for the associated type, like in `Iterator<Item:
/// SomeOtherTrait>`. (This is the unstable `associated_type_bounds`
/// feature.)
pub bounds: Box<[Interned<TypeBound>]>,
pub bounds: Box<[TypeBound]>,
}
/// A single generic argument.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum GenericArg {
Type(TypeRef),
Type(TypeRefId),
Lifetime(LifetimeRef),
Const(ConstRef),
}
@ -112,50 +126,49 @@ impl Path {
}
/// Converts a known mod path to `Path`.
pub fn from_known_path(
path: ModPath,
generic_args: impl Into<Box<[Option<Interned<GenericArgs>>]>>,
) -> Path {
let generic_args = generic_args.into();
assert_eq!(path.len(), generic_args.len());
Path::Normal {
type_anchor: None,
mod_path: Interned::new(path),
generic_args: Some(generic_args),
}
pub fn from_known_path(path: ModPath, generic_args: Vec<Option<GenericArgs>>) -> Path {
Path::Normal(NormalPath::new(None, Interned::new(path), generic_args))
}
/// Converts a known mod path to `Path`.
pub fn from_known_path_with_no_generic(path: ModPath) -> Path {
Path::Normal { type_anchor: None, mod_path: Interned::new(path), generic_args: None }
Path::BarePath(Interned::new(path))
}
#[inline]
pub fn kind(&self) -> &PathKind {
match self {
Path::Normal { mod_path, .. } => &mod_path.kind,
Path::BarePath(mod_path) => &mod_path.kind,
Path::Normal(path) => &path.mod_path().kind,
Path::LangItem(..) => &PathKind::Abs,
}
}
pub fn type_anchor(&self) -> Option<&TypeRef> {
#[inline]
pub fn type_anchor(&self) -> Option<TypeRefId> {
match self {
Path::Normal { type_anchor, .. } => type_anchor.as_deref(),
Path::LangItem(..) => None,
Path::Normal(path) => path.type_anchor(),
Path::LangItem(..) | Path::BarePath(_) => None,
}
}
#[inline]
pub fn generic_args(&self) -> Option<&[Option<GenericArgs>]> {
match self {
Path::Normal(path) => Some(path.generic_args()),
Path::LangItem(..) | Path::BarePath(_) => None,
}
}
pub fn segments(&self) -> PathSegments<'_> {
match self {
Path::Normal { mod_path, generic_args, .. } => {
let s = PathSegments {
segments: mod_path.segments(),
generic_args: generic_args.as_deref(),
};
if let Some(generic_args) = s.generic_args {
assert_eq!(s.segments.len(), generic_args.len());
}
s
Path::BarePath(mod_path) => {
PathSegments { segments: mod_path.segments(), generic_args: None }
}
Path::Normal(path) => PathSegments {
segments: path.mod_path().segments(),
generic_args: Some(path.generic_args()),
},
Path::LangItem(_, seg) => PathSegments {
segments: seg.as_ref().map_or(&[], |seg| std::slice::from_ref(seg)),
generic_args: None,
@ -165,34 +178,55 @@ impl Path {
pub fn mod_path(&self) -> Option<&ModPath> {
match self {
Path::Normal { mod_path, .. } => Some(mod_path),
Path::BarePath(mod_path) => Some(mod_path),
Path::Normal(path) => Some(path.mod_path()),
Path::LangItem(..) => None,
}
}
pub fn qualifier(&self) -> Option<Path> {
let Path::Normal { mod_path, generic_args, type_anchor } = self else {
return None;
};
if mod_path.is_ident() {
return None;
match self {
Path::BarePath(mod_path) => {
if mod_path.is_ident() {
return None;
}
Some(Path::BarePath(Interned::new(ModPath::from_segments(
mod_path.kind,
mod_path.segments()[..mod_path.segments().len() - 1].iter().cloned(),
))))
}
Path::Normal(path) => {
let mod_path = path.mod_path();
if mod_path.is_ident() {
return None;
}
let type_anchor = path.type_anchor();
let generic_args = path.generic_args();
let qualifier_mod_path = Interned::new(ModPath::from_segments(
mod_path.kind,
mod_path.segments()[..mod_path.segments().len() - 1].iter().cloned(),
));
let qualifier_generic_args = &generic_args[..generic_args.len() - 1];
Some(Path::Normal(NormalPath::new(
type_anchor,
qualifier_mod_path,
qualifier_generic_args.iter().cloned(),
)))
}
Path::LangItem(..) => None,
}
let res = Path::Normal {
type_anchor: type_anchor.clone(),
mod_path: Interned::new(ModPath::from_segments(
mod_path.kind,
mod_path.segments()[..mod_path.segments().len() - 1].iter().cloned(),
)),
generic_args: generic_args.as_ref().map(|it| it[..it.len() - 1].to_vec().into()),
};
Some(res)
}
pub fn is_self_type(&self) -> bool {
let Path::Normal { mod_path, generic_args, type_anchor } = self else {
return false;
};
type_anchor.is_none() && generic_args.as_deref().is_none() && mod_path.is_Self()
match self {
Path::BarePath(mod_path) => mod_path.is_Self(),
Path::Normal(path) => {
path.type_anchor().is_none()
&& path.mod_path().is_Self()
&& path.generic_args().iter().all(|args| args.is_none())
}
Path::LangItem(..) => false,
}
}
}
@ -204,7 +238,7 @@ pub struct PathSegment<'a> {
pub struct PathSegments<'a> {
segments: &'a [Name],
generic_args: Option<&'a [Option<Interned<GenericArgs>>]>,
generic_args: Option<&'a [Option<GenericArgs>]>,
}
impl<'a> PathSegments<'a> {
@ -224,7 +258,7 @@ impl<'a> PathSegments<'a> {
pub fn get(&self, idx: usize) -> Option<PathSegment<'a>> {
let res = PathSegment {
name: self.segments.get(idx)?,
args_and_bindings: self.generic_args.and_then(|it| it.get(idx)?.as_deref()),
args_and_bindings: self.generic_args.and_then(|it| it.get(idx)?.as_ref()),
};
Some(res)
}
@ -244,7 +278,7 @@ impl<'a> PathSegments<'a> {
self.segments
.iter()
.zip(self.generic_args.into_iter().flatten().chain(iter::repeat(&None)))
.map(|(name, args)| PathSegment { name, args_and_bindings: args.as_deref() })
.map(|(name, args)| PathSegment { name, args_and_bindings: args.as_ref() })
}
}
@ -268,16 +302,6 @@ impl GenericArgs {
impl From<Name> for Path {
fn from(name: Name) -> Path {
Path::Normal {
type_anchor: None,
mod_path: Interned::new(ModPath::from_segments(PathKind::Plain, iter::once(name))),
generic_args: None,
}
}
}
impl From<Name> for Box<Path> {
fn from(name: Name) -> Box<Path> {
Box::new(Path::from(name))
Path::BarePath(Interned::new(ModPath::from_segments(PathKind::Plain, iter::once(name))))
}
}

55
crates/hir-def/src/path/lower.rs
View file

@ -2,13 +2,14 @@
use std::iter;
use crate::{lower::LowerCtx, type_ref::ConstRef};
use crate::{lower::LowerCtx, path::NormalPath, type_ref::ConstRef};
use hir_expand::{
mod_path::resolve_crate_root,
name::{AsName, Name},
};
use intern::{sym, Interned};
use stdx::thin_vec::EmptyOptimizedThinVec;
use syntax::ast::{self, AstNode, HasGenericArgs, HasTypeBounds};
use crate::{
@ -51,8 +52,7 @@ pub(super) fn lower_path(ctx: &LowerCtx<'_>, mut path: ast::Path) -> Option<Path
segment.param_list(),
segment.ret_type(),
)
})
.map(Interned::new);
});
if args.is_some() {
generic_args.resize(segments.len(), None);
generic_args.push(args);
@ -70,16 +70,14 @@ pub(super) fn lower_path(ctx: &LowerCtx<'_>, mut path: ast::Path) -> Option<Path
match trait_ref {
// <T>::foo
None => {
type_anchor = Some(Interned::new(self_type));
type_anchor = Some(self_type);
kind = PathKind::Plain;
}
// <T as Trait<A>>::Foo desugars to Trait<Self=T, A>::Foo
Some(trait_ref) => {
let Path::Normal { mod_path, generic_args: path_generic_args, .. } =
Path::from_src(ctx, trait_ref.path()?)?
else {
return None;
};
let path = Path::from_src(ctx, trait_ref.path()?)?;
let mod_path = path.mod_path()?;
let path_generic_args = path.generic_args();
let num_segments = mod_path.segments().len();
kind = mod_path.kind;
@ -95,7 +93,7 @@ pub(super) fn lower_path(ctx: &LowerCtx<'_>, mut path: ast::Path) -> Option<Path
// Insert the type reference (T in the above example) as Self parameter for the trait
let last_segment = generic_args.get_mut(segments.len() - num_segments)?;
*last_segment = Some(Interned::new(match last_segment.take() {
*last_segment = Some(match last_segment.take() {
Some(it) => GenericArgs {
args: iter::once(self_type)
.chain(it.args.iter().cloned())
@ -110,7 +108,7 @@ pub(super) fn lower_path(ctx: &LowerCtx<'_>, mut path: ast::Path) -> Option<Path
has_self_type: true,
..GenericArgs::empty()
},
}));
});
}
}
}
@ -137,7 +135,7 @@ pub(super) fn lower_path(ctx: &LowerCtx<'_>, mut path: ast::Path) -> Option<Path
};
}
segments.reverse();
if !generic_args.is_empty() {
if !generic_args.is_empty() || type_anchor.is_some() {
generic_args.resize(segments.len(), None);
generic_args.reverse();
}
@ -166,11 +164,11 @@ pub(super) fn lower_path(ctx: &LowerCtx<'_>, mut path: ast::Path) -> Option<Path
}
let mod_path = Interned::new(ModPath::from_segments(kind, segments));
return Some(Path::Normal {
type_anchor,
mod_path,
generic_args: if generic_args.is_empty() { None } else { Some(generic_args.into()) },
});
if type_anchor.is_none() && generic_args.is_empty() {
return Some(Path::BarePath(mod_path));
} else {
return Some(Path::Normal(NormalPath::new(type_anchor, mod_path, generic_args)));
}
fn qualifier(path: &ast::Path) -> Option<ast::Path> {
if let Some(q) = path.qualifier() {
@ -194,11 +192,13 @@ pub(super) fn lower_generic_args(
match generic_arg {
ast::GenericArg::TypeArg(type_arg) => {
let type_ref = TypeRef::from_ast_opt(lower_ctx, type_arg.ty());
type_ref.walk(&mut |tr| {
let types_map = lower_ctx.types_map();
TypeRef::walk(type_ref, &types_map, &mut |tr| {
if let TypeRef::ImplTrait(bounds) = tr {
lower_ctx.update_impl_traits_bounds(bounds.clone());
}
});
drop(types_map);
args.push(GenericArg::Type(type_ref));
}
ast::GenericArg::AssocTypeArg(assoc_type_arg) => {
@ -212,20 +212,19 @@ pub(super) fn lower_generic_args(
let name = name_ref.as_name();
let args = assoc_type_arg
.generic_arg_list()
.and_then(|args| lower_generic_args(lower_ctx, args))
.map(Interned::new);
.and_then(|args| lower_generic_args(lower_ctx, args));
let type_ref = assoc_type_arg.ty().map(|it| TypeRef::from_ast(lower_ctx, it));
let type_ref = type_ref.inspect(|tr| {
tr.walk(&mut |tr| {
let type_ref = type_ref.inspect(|&tr| {
let types_map = lower_ctx.types_map();
TypeRef::walk(tr, &types_map, &mut |tr| {
if let TypeRef::ImplTrait(bounds) = tr {
lower_ctx.update_impl_traits_bounds(bounds.clone());
}
});
drop(types_map);
});
let bounds = if let Some(l) = assoc_type_arg.type_bound_list() {
l.bounds()
.map(|it| Interned::new(TypeBound::from_ast(lower_ctx, it)))
.collect()
l.bounds().map(|it| TypeBound::from_ast(lower_ctx, it)).collect()
} else {
Box::default()
};
@ -269,7 +268,9 @@ fn lower_generic_args_from_fn_path(
let type_ref = TypeRef::from_ast_opt(ctx, param.ty());
param_types.push(type_ref);
}
let args = Box::new([GenericArg::Type(TypeRef::Tuple(param_types))]);
let args = Box::new([GenericArg::Type(
ctx.alloc_type_ref_desugared(TypeRef::Tuple(EmptyOptimizedThinVec::from_iter(param_types))),
)]);
let bindings = if let Some(ret_type) = ret_type {
let type_ref = TypeRef::from_ast_opt(ctx, ret_type.ty());
Box::new([AssociatedTypeBinding {
@ -280,7 +281,7 @@ fn lower_generic_args_from_fn_path(
}])
} else {
// -> ()
let type_ref = TypeRef::Tuple(Vec::new());
let type_ref = ctx.alloc_type_ref_desugared(TypeRef::unit());
Box::new([AssociatedTypeBinding {
name: Name::new_symbol_root(sym::Output.clone()),
args: None,

78
crates/hir-def/src/pretty.rs
View file

@ -6,7 +6,6 @@ use std::{
};
use hir_expand::mod_path::PathKind;
use intern::Interned;
use itertools::Itertools;
use span::Edition;
@ -14,12 +13,15 @@ use crate::{
db::DefDatabase,
lang_item::LangItemTarget,
path::{GenericArg, GenericArgs, Path},
type_ref::{Mutability, TraitBoundModifier, TypeBound, TypeRef, UseArgRef},
type_ref::{
Mutability, TraitBoundModifier, TypeBound, TypeRef, TypeRefId, TypesMap, UseArgRef,
},
};
pub(crate) fn print_path(
db: &dyn DefDatabase,
path: &Path,
map: &TypesMap,
buf: &mut dyn Write,
edition: Edition,
) -> fmt::Result {
@ -61,7 +63,7 @@ pub(crate) fn print_path(
match path.type_anchor() {
Some(anchor) => {
write!(buf, "<")?;
print_type_ref(db, anchor, buf, edition)?;
print_type_ref(db, anchor, map, buf, edition)?;
write!(buf, ">::")?;
}
None => match path.kind() {
@ -90,7 +92,7 @@ pub(crate) fn print_path(
write!(buf, "{}", segment.name.display(db.upcast(), edition))?;
if let Some(generics) = segment.args_and_bindings {
write!(buf, "::<")?;
print_generic_args(db, generics, buf, edition)?;
print_generic_args(db, generics, map, buf, edition)?;
write!(buf, ">")?;
}
@ -102,6 +104,7 @@ pub(crate) fn print_path(
pub(crate) fn print_generic_args(
db: &dyn DefDatabase,
generics: &GenericArgs,
map: &TypesMap,
buf: &mut dyn Write,
edition: Edition,
) -> fmt::Result {
@ -109,7 +112,7 @@ pub(crate) fn print_generic_args(
let args = if generics.has_self_type {
let (self_ty, args) = generics.args.split_first().unwrap();
write!(buf, "Self=")?;
print_generic_arg(db, self_ty, buf, edition)?;
print_generic_arg(db, self_ty, map, buf, edition)?;
first = false;
args
} else {
@ -120,7 +123,7 @@ pub(crate) fn print_generic_args(
write!(buf, ", ")?;
}
first = false;
print_generic_arg(db, arg, buf, edition)?;
print_generic_arg(db, arg, map, buf, edition)?;
}
for binding in generics.bindings.iter() {
if !first {
@ -130,11 +133,11 @@ pub(crate) fn print_generic_args(
write!(buf, "{}", binding.name.display(db.upcast(), edition))?;
if !binding.bounds.is_empty() {
write!(buf, ": ")?;
print_type_bounds(db, &binding.bounds, buf, edition)?;
print_type_bounds(db, &binding.bounds, map, buf, edition)?;
}
if let Some(ty) = &binding.type_ref {
if let Some(ty) = binding.type_ref {
write!(buf, " = ")?;
print_type_ref(db, ty, buf, edition)?;
print_type_ref(db, ty, map, buf, edition)?;
}
}
Ok(())
@ -143,11 +146,12 @@ pub(crate) fn print_generic_args(
pub(crate) fn print_generic_arg(
db: &dyn DefDatabase,
arg: &GenericArg,
map: &TypesMap,
buf: &mut dyn Write,
edition: Edition,
) -> fmt::Result {
match arg {
GenericArg::Type(ty) => print_type_ref(db, ty, buf, edition),
GenericArg::Type(ty) => print_type_ref(db, *ty, map, buf, edition),
GenericArg::Const(c) => write!(buf, "{}", c.display(db.upcast(), edition)),
GenericArg::Lifetime(lt) => write!(buf, "{}", lt.name.display(db.upcast(), edition)),
}
@ -155,12 +159,13 @@ pub(crate) fn print_generic_arg(
pub(crate) fn print_type_ref(
db: &dyn DefDatabase,
type_ref: &TypeRef,
type_ref: TypeRefId,
map: &TypesMap,
buf: &mut dyn Write,
edition: Edition,
) -> fmt::Result {
// FIXME: deduplicate with `HirDisplay` impl
match type_ref {
match &map[type_ref] {
TypeRef::Never => write!(buf, "!")?,
TypeRef::Placeholder => write!(buf, "_")?,
TypeRef::Tuple(fields) => {
@ -169,48 +174,48 @@ pub(crate) fn print_type_ref(
if i != 0 {
write!(buf, ", ")?;
}
print_type_ref(db, field, buf, edition)?;
print_type_ref(db, *field, map, buf, edition)?;
}
write!(buf, ")")?;
}
TypeRef::Path(path) => print_path(db, path, buf, edition)?,
TypeRef::Path(path) => print_path(db, path, map, buf, edition)?,
TypeRef::RawPtr(pointee, mtbl) => {
let mtbl = match mtbl {
Mutability::Shared => "*const",
Mutability::Mut => "*mut",
};
write!(buf, "{mtbl} ")?;
print_type_ref(db, pointee, buf, edition)?;
print_type_ref(db, *pointee, map, buf, edition)?;
}
TypeRef::Reference(pointee, lt, mtbl) => {
let mtbl = match mtbl {
TypeRef::Reference(ref_) => {
let mtbl = match ref_.mutability {
Mutability::Shared => "",
Mutability::Mut => "mut ",
};
write!(buf, "&")?;
if let Some(lt) = lt {
if let Some(lt) = &ref_.lifetime {
write!(buf, "{} ", lt.name.display(db.upcast(), edition))?;
}
write!(buf, "{mtbl}")?;
print_type_ref(db, pointee, buf, edition)?;
print_type_ref(db, ref_.ty, map, buf, edition)?;
}
TypeRef::Array(elem, len) => {
TypeRef::Array(array) => {
write!(buf, "[")?;
print_type_ref(db, elem, buf, edition)?;
write!(buf, "; {}]", len.display(db.upcast(), edition))?;
print_type_ref(db, array.ty, map, buf, edition)?;
write!(buf, "; {}]", array.len.display(db.upcast(), edition))?;
}
TypeRef::Slice(elem) => {
write!(buf, "[")?;
print_type_ref(db, elem, buf, edition)?;
print_type_ref(db, *elem, map, buf, edition)?;
write!(buf, "]")?;
}
TypeRef::Fn(args_and_ret, varargs, is_unsafe, abi) => {
TypeRef::Fn(fn_) => {
let ((_, return_type), args) =
args_and_ret.split_last().expect("TypeRef::Fn is missing return type");
if *is_unsafe {
fn_.params().split_last().expect("TypeRef::Fn is missing return type");
if fn_.is_unsafe() {
write!(buf, "unsafe ")?;
}
if let Some(abi) = abi {
if let Some(abi) = fn_.abi() {
buf.write_str("extern ")?;
buf.write_str(abi.as_str())?;
buf.write_char(' ')?;
@ -220,16 +225,16 @@ pub(crate) fn print_type_ref(
if i != 0 {
write!(buf, ", ")?;
}
print_type_ref(db, typeref, buf, edition)?;
print_type_ref(db, *typeref, map, buf, edition)?;
}
if *varargs {
if fn_.is_varargs() {
if !args.is_empty() {
write!(buf, ", ")?;
}
write!(buf, "...")?;
}
write!(buf, ") -> ")?;
print_type_ref(db, return_type, buf, edition)?;
print_type_ref(db, *return_type, map, buf, edition)?;
}
TypeRef::Macro(_ast_id) => {
write!(buf, "<macro>")?;
@ -237,11 +242,11 @@ pub(crate) fn print_type_ref(
TypeRef::Error => write!(buf, "{{unknown}}")?,
TypeRef::ImplTrait(bounds) => {
write!(buf, "impl ")?;
print_type_bounds(db, bounds, buf, edition)?;
print_type_bounds(db, bounds, map, buf, edition)?;
}
TypeRef::DynTrait(bounds) => {
write!(buf, "dyn ")?;
print_type_bounds(db, bounds, buf, edition)?;
print_type_bounds(db, bounds, map, buf, edition)?;
}
}
@ -250,7 +255,8 @@ pub(crate) fn print_type_ref(
pub(crate) fn print_type_bounds(
db: &dyn DefDatabase,
bounds: &[Interned<TypeBound>],
bounds: &[TypeBound],
map: &TypesMap,
buf: &mut dyn Write,
edition: Edition,
) -> fmt::Result {
@ -259,13 +265,13 @@ pub(crate) fn print_type_bounds(
write!(buf, " + ")?;
}
match bound.as_ref() {
match bound {
TypeBound::Path(path, modifier) => {
match modifier {
TraitBoundModifier::None => (),
TraitBoundModifier::Maybe => write!(buf, "?")?,
}
print_path(db, path, buf, edition)?;
print_path(db, path, map, buf, edition)?;
}
TypeBound::ForLifetime(lifetimes, path) => {
write!(
@ -273,7 +279,7 @@ pub(crate) fn print_type_bounds(
"for<{}> ",
lifetimes.iter().map(|it| it.display(db.upcast(), edition)).format(", ")
)?;
print_path(db, path, buf, edition)?;
print_path(db, path, map, buf, edition)?;
}
TypeBound::Lifetime(lt) => write!(buf, "{}", lt.name.display(db.upcast(), edition))?,
TypeBound::Use(args) => {

27
crates/hir-def/src/resolver.rs
View file

@ -3,7 +3,7 @@ use std::{fmt, iter, mem};
use base_db::CrateId;
use hir_expand::{name::Name, MacroDefId};
use intern::{sym, Interned};
use intern::sym;
use itertools::Itertools as _;
use rustc_hash::FxHashSet;
use smallvec::{smallvec, SmallVec};
@ -24,7 +24,7 @@ use crate::{
nameres::{DefMap, MacroSubNs},
path::{ModPath, Path, PathKind},
per_ns::PerNs,
type_ref::LifetimeRef,
type_ref::{LifetimeRef, TypesMap},
visibility::{RawVisibility, Visibility},
AdtId, ConstId, ConstParamId, CrateRootModuleId, DefWithBodyId, EnumId, EnumVariantId,
ExternBlockId, ExternCrateId, FunctionId, FxIndexMap, GenericDefId, GenericParamId, HasModule,
@ -76,7 +76,7 @@ enum Scope {
/// All the items and imported names of a module
BlockScope(ModuleItemMap),
/// Brings the generic parameters of an item into scope
GenericParams { def: GenericDefId, params: Interned<GenericParams> },
GenericParams { def: GenericDefId, params: Arc<GenericParams> },
/// Brings `Self` in `impl` block into scope
ImplDefScope(ImplId),
/// Brings `Self` in enum, struct and union definitions into scope
@ -167,7 +167,8 @@ impl Resolver {
path: &Path,
) -> Option<(TypeNs, Option<usize>, Option<ImportOrExternCrate>)> {
let path = match path {
Path::Normal { mod_path, .. } => mod_path,
Path::BarePath(mod_path) => mod_path,
Path::Normal(it) => it.mod_path(),
Path::LangItem(l, seg) => {
let type_ns = match *l {
LangItemTarget::Union(it) => TypeNs::AdtId(it.into()),
@ -265,7 +266,8 @@ impl Resolver {
mut hygiene_id: HygieneId,
) -> Option<ResolveValueResult> {
let path = match path {
Path::Normal { mod_path, .. } => mod_path,
Path::BarePath(mod_path) => mod_path,
Path::Normal(it) => it.mod_path(),
Path::LangItem(l, None) => {
return Some(ResolveValueResult::ValueNs(
match *l {
@ -620,13 +622,15 @@ impl Resolver {
pub fn where_predicates_in_scope(
&self,
) -> impl Iterator<Item = (&crate::generics::WherePredicate, &GenericDefId)> {
) -> impl Iterator<Item = (&crate::generics::WherePredicate, (&GenericDefId, &TypesMap))> {
self.scopes()
.filter_map(|scope| match scope {
Scope::GenericParams { params, def } => Some((params, def)),
_ => None,
})
.flat_map(|(params, def)| params.where_predicates().zip(iter::repeat(def)))
.flat_map(|(params, def)| {
params.where_predicates().zip(iter::repeat((def, &params.types_map)))
})
}
pub fn generic_def(&self) -> Option<GenericDefId> {
@ -636,13 +640,20 @@ impl Resolver {
})
}
pub fn generic_params(&self) -> Option<&Interned<GenericParams>> {
pub fn generic_params(&self) -> Option<&Arc<GenericParams>> {
self.scopes().find_map(|scope| match scope {
Scope::GenericParams { params, .. } => Some(params),
_ => None,
})
}
pub fn all_generic_params(&self) -> impl Iterator<Item = (&GenericParams, &GenericDefId)> {
self.scopes().filter_map(|scope| match scope {
Scope::GenericParams { params, def } => Some((&**params, def)),
_ => None,
})
}
pub fn body_owner(&self) -> Option<DefWithBodyId> {
self.scopes().find_map(|scope| match scope {
Scope::ExprScope(it) => Some(it.owner),

5
crates/hir-expand/src/attrs.rs
View file

@ -26,6 +26,7 @@ use crate::{
/// Syntactical attributes, without filtering of `cfg_attr`s.
#[derive(Default, Debug, Clone, PartialEq, Eq)]
pub struct RawAttrs {
// FIXME: This can become `Box<[Attr]>` if https://internals.rust-lang.org/t/layout-of-dst-box/21728?u=chrefr is accepted.
entries: Option<ThinArc<(), Attr>>,
}
@ -169,6 +170,10 @@ impl RawAttrs {
};
RawAttrs { entries }
}
pub fn is_empty(&self) -> bool {
self.entries.is_none()
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]

5
crates/hir-ty/src/chalk_db.rs
View file

@ -615,8 +615,9 @@ pub(crate) fn associated_ty_data_query(
let type_alias_data = db.type_alias_data(type_alias);
let generic_params = generics(db.upcast(), type_alias.into());
let resolver = hir_def::resolver::HasResolver::resolver(type_alias, db.upcast());
let ctx = crate::TyLoweringContext::new(db, &resolver, type_alias.into())
.with_type_param_mode(crate::lower::ParamLoweringMode::Variable);
let ctx =
crate::TyLoweringContext::new(db, &resolver, &type_alias_data.types_map, type_alias.into())
.with_type_param_mode(crate::lower::ParamLoweringMode::Variable);
let trait_subst = TyBuilder::subst_for_def(db, trait_, None)
.fill_with_bound_vars(crate::DebruijnIndex::INNERMOST, generic_params.len_self())

4
crates/hir-ty/src/diagnostics/decl_check.rs
View file

@ -309,7 +309,7 @@ impl<'a> DeclValidator<'a> {
/// Check incorrect names for struct fields.
fn validate_struct_fields(&mut self, struct_id: StructId) {
let data = self.db.struct_data(struct_id);
let VariantData::Record(fields) = data.variant_data.as_ref() else {
let VariantData::Record { fields, .. } = data.variant_data.as_ref() else {
return;
};
let edition = self.edition(struct_id);
@ -469,7 +469,7 @@ impl<'a> DeclValidator<'a> {
/// Check incorrect names for fields of enum variant.
fn validate_enum_variant_fields(&mut self, variant_id: EnumVariantId) {
let variant_data = self.db.enum_variant_data(variant_id);
let VariantData::Record(fields) = variant_data.variant_data.as_ref() else {
let VariantData::Record { fields, .. } = variant_data.variant_data.as_ref() else {
return;
};
let edition = self.edition(variant_id);

2
crates/hir-ty/src/diagnostics/match_check.rs
View file

@ -341,7 +341,7 @@ impl HirDisplay for Pat {
};
let variant_data = variant.variant_data(f.db.upcast());
if let VariantData::Record(rec_fields) = &*variant_data {
if let VariantData::Record { fields: rec_fields, .. } = &*variant_data {
write!(f, " {{ ")?;
let mut printed = 0;

174
crates/hir-ty/src/display.rs
View file

@ -19,7 +19,9 @@ use hir_def::{
lang_item::{LangItem, LangItemTarget},
nameres::DefMap,
path::{Path, PathKind},
type_ref::{TraitBoundModifier, TypeBound, TypeRef, UseArgRef},
type_ref::{
TraitBoundModifier, TypeBound, TypeRef, TypeRefId, TypesMap, TypesSourceMap, UseArgRef,
},
visibility::Visibility,
GenericDefId, HasModule, ImportPathConfig, ItemContainerId, LocalFieldId, Lookup, ModuleDefId,
ModuleId, TraitId,
@ -806,7 +808,7 @@ fn render_variant_after_name(
memory_map: &MemoryMap,
) -> Result<(), HirDisplayError> {
match data {
VariantData::Record(fields) | VariantData::Tuple(fields) => {
VariantData::Record { fields, .. } | VariantData::Tuple { fields, .. } => {
let render_field = |f: &mut HirFormatter<'_>, id: LocalFieldId| {
let offset = layout.fields.offset(u32::from(id.into_raw()) as usize).bytes_usize();
let ty = field_types[id].clone().substitute(Interner, subst);
@ -817,7 +819,7 @@ fn render_variant_after_name(
render_const_scalar(f, &b[offset..offset + size], memory_map, &ty)
};
let mut it = fields.iter();
if matches!(data, VariantData::Record(_)) {
if matches!(data, VariantData::Record { .. }) {
write!(f, " {{")?;
if let Some((id, data)) = it.next() {
write!(f, " {}: ", data.name.display(f.db.upcast(), f.edition()))?;
@ -1897,100 +1899,150 @@ pub fn write_visibility(
}
}
impl HirDisplay for TypeRef {
pub trait HirDisplayWithTypesMap {
fn hir_fmt(
&self,
f: &mut HirFormatter<'_>,
types_map: &TypesMap,
) -> Result<(), HirDisplayError>;
}
impl<T: ?Sized + HirDisplayWithTypesMap> HirDisplayWithTypesMap for &'_ T {
fn hir_fmt(
&self,
f: &mut HirFormatter<'_>,
types_map: &TypesMap,
) -> Result<(), HirDisplayError> {
T::hir_fmt(&**self, f, types_map)
}
}
pub fn hir_display_with_types_map<'a, T: HirDisplayWithTypesMap + 'a>(
value: T,
types_map: &'a TypesMap,
) -> impl HirDisplay + 'a {
TypesMapAdapter(value, types_map)
}
struct TypesMapAdapter<'a, T>(T, &'a TypesMap);
impl<'a, T> TypesMapAdapter<'a, T> {
fn wrap(types_map: &'a TypesMap) -> impl Fn(T) -> TypesMapAdapter<'a, T> {
move |value| TypesMapAdapter(value, types_map)
}
}
impl<T: HirDisplayWithTypesMap> HirDisplay for TypesMapAdapter<'_, T> {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
match self {
T::hir_fmt(&self.0, f, self.1)
}
}
impl HirDisplayWithTypesMap for TypeRefId {
fn hir_fmt(
&self,
f: &mut HirFormatter<'_>,
types_map: &TypesMap,
) -> Result<(), HirDisplayError> {
match &types_map[*self] {
TypeRef::Never => write!(f, "!")?,
TypeRef::Placeholder => write!(f, "_")?,
TypeRef::Tuple(elems) => {
write!(f, "(")?;
f.write_joined(elems, ", ")?;
f.write_joined(elems.iter().map(TypesMapAdapter::wrap(types_map)), ", ")?;
if elems.len() == 1 {
write!(f, ",")?;
}
write!(f, ")")?;
}
TypeRef::Path(path) => path.hir_fmt(f)?,
TypeRef::Path(path) => path.hir_fmt(f, types_map)?,
TypeRef::RawPtr(inner, mutability) => {
let mutability = match mutability {
hir_def::type_ref::Mutability::Shared => "*const ",
hir_def::type_ref::Mutability::Mut => "*mut ",
};
write!(f, "{mutability}")?;
inner.hir_fmt(f)?;
inner.hir_fmt(f, types_map)?;
}
TypeRef::Reference(inner, lifetime, mutability) => {
let mutability = match mutability {
TypeRef::Reference(ref_) => {
let mutability = match ref_.mutability {
hir_def::type_ref::Mutability::Shared => "",
hir_def::type_ref::Mutability::Mut => "mut ",
};
write!(f, "&")?;
if let Some(lifetime) = lifetime {
if let Some(lifetime) = &ref_.lifetime {
write!(f, "{} ", lifetime.name.display(f.db.upcast(), f.edition()))?;
}
write!(f, "{mutability}")?;
inner.hir_fmt(f)?;
ref_.ty.hir_fmt(f, types_map)?;
}
TypeRef::Array(inner, len) => {
TypeRef::Array(array) => {
write!(f, "[")?;
inner.hir_fmt(f)?;
write!(f, "; {}]", len.display(f.db.upcast(), f.edition()))?;
array.ty.hir_fmt(f, types_map)?;
write!(f, "; {}]", array.len.display(f.db.upcast(), f.edition()))?;
}
TypeRef::Slice(inner) => {
write!(f, "[")?;
inner.hir_fmt(f)?;
inner.hir_fmt(f, types_map)?;
write!(f, "]")?;
}
&TypeRef::Fn(ref parameters, is_varargs, is_unsafe, ref abi) => {
if is_unsafe {
TypeRef::Fn(fn_) => {
if fn_.is_unsafe() {
write!(f, "unsafe ")?;
}
if let Some(abi) = abi {
if let Some(abi) = fn_.abi() {
f.write_str("extern \"")?;
f.write_str(abi.as_str())?;
f.write_str("\" ")?;
}
write!(f, "fn(")?;
if let Some(((_, return_type), function_parameters)) = parameters.split_last() {
if let Some(((_, return_type), function_parameters)) = fn_.params().split_last() {
for index in 0..function_parameters.len() {
let (param_name, param_type) = &function_parameters[index];
if let Some(name) = param_name {
write!(f, "{}: ", name.display(f.db.upcast(), f.edition()))?;
}
param_type.hir_fmt(f)?;
param_type.hir_fmt(f, types_map)?;
if index != function_parameters.len() - 1 {
write!(f, ", ")?;
}
}
if is_varargs {
write!(f, "{}...", if parameters.len() == 1 { "" } else { ", " })?;
if fn_.is_varargs() {
write!(f, "{}...", if fn_.params().len() == 1 { "" } else { ", " })?;
}
write!(f, ")")?;
match &return_type {
match &types_map[*return_type] {
TypeRef::Tuple(tup) if tup.is_empty() => {}
_ => {
write!(f, " -> ")?;
return_type.hir_fmt(f)?;
return_type.hir_fmt(f, types_map)?;
}
}
}
}
TypeRef::ImplTrait(bounds) => {
write!(f, "impl ")?;
f.write_joined(bounds, " + ")?;
f.write_joined(bounds.iter().map(TypesMapAdapter::wrap(types_map)), " + ")?;
}
TypeRef::DynTrait(bounds) => {
write!(f, "dyn ")?;
f.write_joined(bounds, " + ")?;
f.write_joined(bounds.iter().map(TypesMapAdapter::wrap(types_map)), " + ")?;
}
TypeRef::Macro(macro_call) => {
let ctx = hir_def::lower::LowerCtx::new(f.db.upcast(), macro_call.file_id);
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx = hir_def::lower::LowerCtx::new(
f.db.upcast(),
macro_call.file_id,
&mut types_map,
&mut types_source_map,
);
let macro_call = macro_call.to_node(f.db.upcast());
match macro_call.path() {
Some(path) => match Path::from_src(&ctx, path) {
Some(path) => path.hir_fmt(f)?,
Some(path) => path.hir_fmt(f, &types_map)?,
None => write!(f, "{{macro}}")?,
},
None => write!(f, "{{macro}}")?,
@ -2003,15 +2055,19 @@ impl HirDisplay for TypeRef {
}
}
impl HirDisplay for TypeBound {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
impl HirDisplayWithTypesMap for TypeBound {
fn hir_fmt(
&self,
f: &mut HirFormatter<'_>,
types_map: &TypesMap,
) -> Result<(), HirDisplayError> {
match self {
TypeBound::Path(path, modifier) => {
match modifier {
TraitBoundModifier::None => (),
TraitBoundModifier::Maybe => write!(f, "?")?,
}
path.hir_fmt(f)
path.hir_fmt(f, types_map)
}
TypeBound::Lifetime(lifetime) => {
write!(f, "{}", lifetime.name.display(f.db.upcast(), f.edition()))
@ -2023,7 +2079,7 @@ impl HirDisplay for TypeBound {
"for<{}> ",
lifetimes.iter().map(|it| it.display(f.db.upcast(), edition)).format(", ")
)?;
path.hir_fmt(f)
path.hir_fmt(f, types_map)
}
TypeBound::Use(args) => {
let edition = f.edition();
@ -2043,12 +2099,16 @@ impl HirDisplay for TypeBound {
}
}
impl HirDisplay for Path {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
impl HirDisplayWithTypesMap for Path {
fn hir_fmt(
&self,
f: &mut HirFormatter<'_>,
types_map: &TypesMap,
) -> Result<(), HirDisplayError> {
match (self.type_anchor(), self.kind()) {
(Some(anchor), _) => {
write!(f, "<")?;
anchor.hir_fmt(f)?;
anchor.hir_fmt(f, types_map)?;
write!(f, ">")?;
}
(_, PathKind::Plain) => {}
@ -2091,7 +2151,7 @@ impl HirDisplay for Path {
});
if let Some(ty) = trait_self_ty {
write!(f, "<")?;
ty.hir_fmt(f)?;
ty.hir_fmt(f, types_map)?;
write!(f, " as ")?;
// Now format the path of the trait...
}
@ -2107,21 +2167,26 @@ impl HirDisplay for Path {
if generic_args.desugared_from_fn {
// First argument will be a tuple, which already includes the parentheses.
// If the tuple only contains 1 item, write it manually to avoid the trailing `,`.
if let hir_def::path::GenericArg::Type(TypeRef::Tuple(v)) =
&generic_args.args[0]
{
let tuple = match generic_args.args[0] {
hir_def::path::GenericArg::Type(ty) => match &types_map[ty] {
TypeRef::Tuple(it) => Some(it),
_ => None,
},
_ => None,
};
if let Some(v) = tuple {
if v.len() == 1 {
write!(f, "(")?;
v[0].hir_fmt(f)?;
v[0].hir_fmt(f, types_map)?;
write!(f, ")")?;
} else {
generic_args.args[0].hir_fmt(f)?;
generic_args.args[0].hir_fmt(f, types_map)?;
}
}
if let Some(ret) = &generic_args.bindings[0].type_ref {
if !matches!(ret, TypeRef::Tuple(v) if v.is_empty()) {
if let Some(ret) = generic_args.bindings[0].type_ref {
if !matches!(&types_map[ret], TypeRef::Tuple(v) if v.is_empty()) {
write!(f, " -> ")?;
ret.hir_fmt(f)?;
ret.hir_fmt(f, types_map)?;
}
}
return Ok(());
@ -2136,7 +2201,7 @@ impl HirDisplay for Path {
} else {
write!(f, ", ")?;
}
arg.hir_fmt(f)?;
arg.hir_fmt(f, types_map)?;
}
for binding in generic_args.bindings.iter() {
if first {
@ -2149,11 +2214,14 @@ impl HirDisplay for Path {
match &binding.type_ref {
Some(ty) => {
write!(f, " = ")?;
ty.hir_fmt(f)?
ty.hir_fmt(f, types_map)?
}
None => {
write!(f, ": ")?;
f.write_joined(binding.bounds.iter(), " + ")?;
f.write_joined(
binding.bounds.iter().map(TypesMapAdapter::wrap(types_map)),
" + ",
)?;
}
}
}
@ -2175,10 +2243,14 @@ impl HirDisplay for Path {
}
}
impl HirDisplay for hir_def::path::GenericArg {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
impl HirDisplayWithTypesMap for hir_def::path::GenericArg {
fn hir_fmt(
&self,
f: &mut HirFormatter<'_>,
types_map: &TypesMap,
) -> Result<(), HirDisplayError> {
match self {
hir_def::path::GenericArg::Type(ty) => ty.hir_fmt(f),
hir_def::path::GenericArg::Type(ty) => ty.hir_fmt(f, types_map),
hir_def::path::GenericArg::Const(c) => {
write!(f, "{}", c.display(f.db.upcast(), f.edition()))
}

17
crates/hir-ty/src/generics.rs
View file

@ -16,12 +16,13 @@ use hir_def::{
GenericParamDataRef, GenericParams, LifetimeParamData, TypeOrConstParamData,
TypeParamProvenance,
},
type_ref::TypesMap,
ConstParamId, GenericDefId, GenericParamId, ItemContainerId, LifetimeParamId,
LocalLifetimeParamId, LocalTypeOrConstParamId, Lookup, TypeOrConstParamId, TypeParamId,
};
use intern::Interned;
use itertools::chain;
use stdx::TupleExt;
use triomphe::Arc;
use crate::{db::HirDatabase, lt_to_placeholder_idx, to_placeholder_idx, Interner, Substitution};
@ -34,7 +35,7 @@ pub(crate) fn generics(db: &dyn DefDatabase, def: GenericDefId) -> Generics {
#[derive(Clone, Debug)]
pub(crate) struct Generics {
def: GenericDefId,
params: Interned<GenericParams>,
params: Arc<GenericParams>,
parent_generics: Option<Box<Generics>>,
has_trait_self_param: bool,
}
@ -85,6 +86,18 @@ impl Generics {
self.iter_self().chain(self.iter_parent())
}
pub(crate) fn iter_with_types_map(
&self,
) -> impl Iterator<Item = ((GenericParamId, GenericParamDataRef<'_>), &TypesMap)> + '_ {
self.iter_self().zip(std::iter::repeat(&self.params.types_map)).chain(
self.iter_parent().zip(
self.parent_generics()
.into_iter()
.flat_map(|it| std::iter::repeat(&it.params.types_map)),
),
)
}
/// Iterate over the params without parent params.
pub(crate) fn iter_self(
&self,

67
crates/hir-ty/src/infer.rs
View file

@ -41,7 +41,7 @@ use hir_def::{
layout::Integer,
path::{ModPath, Path},
resolver::{HasResolver, ResolveValueResult, Resolver, TypeNs, ValueNs},
type_ref::{LifetimeRef, TypeRef},
type_ref::{LifetimeRef, TypeRefId, TypesMap},
AdtId, AssocItemId, DefWithBodyId, FieldId, FunctionId, ImplId, ItemContainerId, Lookup,
TraitId, TupleFieldId, TupleId, TypeAliasId, VariantId,
};
@ -858,7 +858,7 @@ impl<'a> InferenceContext<'a> {
}
fn collect_const(&mut self, data: &ConstData) {
let return_ty = self.make_ty(&data.type_ref);
let return_ty = self.make_ty(data.type_ref, &data.types_map);
// Constants might be defining usage sites of TAITs.
self.make_tait_coercion_table(iter::once(&return_ty));
@ -867,7 +867,7 @@ impl<'a> InferenceContext<'a> {
}
fn collect_static(&mut self, data: &StaticData) {
let return_ty = self.make_ty(&data.type_ref);
let return_ty = self.make_ty(data.type_ref, &data.types_map);
// Statics might be defining usage sites of TAITs.
self.make_tait_coercion_table(iter::once(&return_ty));
@ -877,11 +877,11 @@ impl<'a> InferenceContext<'a> {
fn collect_fn(&mut self, func: FunctionId) {
let data = self.db.function_data(func);
let ctx = crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into())
.with_type_param_mode(ParamLoweringMode::Placeholder)
.with_impl_trait_mode(ImplTraitLoweringMode::Param);
let mut param_tys =
data.params.iter().map(|type_ref| ctx.lower_ty(type_ref)).collect::<Vec<_>>();
let mut param_tys = self.with_ty_lowering(&data.types_map, |ctx| {
ctx.type_param_mode(ParamLoweringMode::Placeholder)
.impl_trait_mode(ImplTraitLoweringMode::Param);
data.params.iter().map(|&type_ref| ctx.lower_ty(type_ref)).collect::<Vec<_>>()
});
// Check if function contains a va_list, if it does then we append it to the parameter types
// that are collected from the function data
if data.is_varargs() {
@ -916,12 +916,13 @@ impl<'a> InferenceContext<'a> {
tait_candidates.insert(ty);
}
}
let return_ty = &*data.ret_type;
let return_ty = data.ret_type;
let ctx = crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into())
.with_type_param_mode(ParamLoweringMode::Placeholder)
.with_impl_trait_mode(ImplTraitLoweringMode::Opaque);
let return_ty = ctx.lower_ty(return_ty);
let return_ty = self.with_ty_lowering(&data.types_map, |ctx| {
ctx.type_param_mode(ParamLoweringMode::Placeholder)
.impl_trait_mode(ImplTraitLoweringMode::Opaque)
.lower_ty(return_ty)
});
let return_ty = self.insert_type_vars(return_ty);
let return_ty = if let Some(rpits) = self.db.return_type_impl_traits(func) {
@ -1225,20 +1226,43 @@ impl<'a> InferenceContext<'a> {
self.result.diagnostics.push(diagnostic);
}
fn make_ty(&mut self, type_ref: &TypeRef) -> Ty {
let ctx = crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into());
let ty = ctx.lower_ty(type_ref);
fn with_ty_lowering<R>(
&self,
types_map: &TypesMap,
f: impl FnOnce(&mut crate::lower::TyLoweringContext<'_>) -> R,
) -> R {
let mut ctx = crate::lower::TyLoweringContext::new(
self.db,
&self.resolver,
types_map,
self.owner.into(),
);
f(&mut ctx)
}
fn with_body_ty_lowering<R>(
&self,
f: impl FnOnce(&mut crate::lower::TyLoweringContext<'_>) -> R,
) -> R {
self.with_ty_lowering(&self.body.types, f)
}
fn make_ty(&mut self, type_ref: TypeRefId, types_map: &TypesMap) -> Ty {
let ty = self.with_ty_lowering(types_map, |ctx| ctx.lower_ty(type_ref));
let ty = self.insert_type_vars(ty);
self.normalize_associated_types_in(ty)
}
fn make_body_ty(&mut self, type_ref: TypeRefId) -> Ty {
self.make_ty(type_ref, &self.body.types)
}
fn err_ty(&self) -> Ty {
self.result.standard_types.unknown.clone()
}
fn make_lifetime(&mut self, lifetime_ref: &LifetimeRef) -> Lifetime {
let ctx = crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into());
let lt = ctx.lower_lifetime(lifetime_ref);
let lt = self.with_ty_lowering(TypesMap::EMPTY, |ctx| ctx.lower_lifetime(lifetime_ref));
self.insert_type_vars(lt)
}
@ -1396,7 +1420,12 @@ impl<'a> InferenceContext<'a> {
Some(path) => path,
None => return (self.err_ty(), None),
};
let ctx = crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into());
let ctx = crate::lower::TyLoweringContext::new(
self.db,
&self.resolver,
&self.body.types,
self.owner.into(),
);
let (resolution, unresolved) = if value_ns {
match self.resolver.resolve_path_in_value_ns(self.db.upcast(), path, HygieneId::ROOT) {
Some(ResolveValueResult::ValueNs(value, _)) => match value {

14
crates/hir-ty/src/infer/closure.rs
View file

@ -283,11 +283,11 @@ impl CapturedItem {
ProjectionElem::Deref => {}
ProjectionElem::Field(Either::Left(f)) => {
match &*f.parent.variant_data(db.upcast()) {
VariantData::Record(fields) => {
VariantData::Record { fields, .. } => {
result.push('_');
result.push_str(fields[f.local_id].name.as_str())
}
VariantData::Tuple(fields) => {
VariantData::Tuple { fields, .. } => {
let index = fields.iter().position(|it| it.0 == f.local_id);
if let Some(index) = index {
format_to!(result, "_{index}");
@ -325,12 +325,12 @@ impl CapturedItem {
ProjectionElem::Field(Either::Left(f)) => {
let variant_data = f.parent.variant_data(db.upcast());
match &*variant_data {
VariantData::Record(fields) => format_to!(
VariantData::Record { fields, .. } => format_to!(
result,
".{}",
fields[f.local_id].name.display(db.upcast(), edition)
),
VariantData::Tuple(fields) => format_to!(
VariantData::Tuple { fields, .. } => format_to!(
result,
".{}",
fields.iter().position(|it| it.0 == f.local_id).unwrap_or_default()
@ -383,8 +383,10 @@ impl CapturedItem {
}
let variant_data = f.parent.variant_data(db.upcast());
let field = match &*variant_data {
VariantData::Record(fields) => fields[f.local_id].name.as_str().to_owned(),
VariantData::Tuple(fields) => fields
VariantData::Record { fields, .. } => {
fields[f.local_id].name.as_str().to_owned()
}
VariantData::Tuple { fields, .. } => fields
.iter()
.position(|it| it.0 == f.local_id)
.unwrap_or_default()

15
crates/hir-ty/src/infer/expr.rs
View file

@ -198,7 +198,7 @@ impl InferenceContext<'_> {
match &self.body[expr] {
// Lang item paths cannot currently be local variables or statics.
Expr::Path(Path::LangItem(_, _)) => false,
Expr::Path(Path::Normal { type_anchor: Some(_), .. }) => false,
Expr::Path(Path::Normal(path)) => path.type_anchor().is_none(),
Expr::Path(path) => self
.resolver
.resolve_path_in_value_ns_fully(
@ -382,7 +382,7 @@ impl InferenceContext<'_> {
// collect explicitly written argument types
for arg_type in arg_types.iter() {
let arg_ty = match arg_type {
Some(type_ref) => self.make_ty(type_ref),
Some(type_ref) => self.make_body_ty(*type_ref),
None => self.table.new_type_var(),
};
sig_tys.push(arg_ty);
@ -390,7 +390,7 @@ impl InferenceContext<'_> {
// add return type
let ret_ty = match ret_type {
Some(type_ref) => self.make_ty(type_ref),
Some(type_ref) => self.make_body_ty(*type_ref),
None => self.table.new_type_var(),
};
if let ClosureKind::Async = closure_kind {
@ -786,7 +786,7 @@ impl InferenceContext<'_> {
self.resolve_associated_type(inner_ty, self.resolve_future_future_output())
}
Expr::Cast { expr, type_ref } => {
let cast_ty = self.make_ty(type_ref);
let cast_ty = self.make_body_ty(*type_ref);
let expr_ty = self.infer_expr(
*expr,
&Expectation::Castable(cast_ty.clone()),
@ -1214,7 +1214,7 @@ impl InferenceContext<'_> {
let ty = match self.infer_path(path, id) {
Some(ty) => ty,
None => {
if matches!(path, Path::Normal { mod_path, .. } if mod_path.is_ident() || mod_path.is_self())
if path.mod_path().is_some_and(|mod_path| mod_path.is_ident() || mod_path.is_self())
{
self.push_diagnostic(InferenceDiagnostic::UnresolvedIdent { id });
}
@ -1598,7 +1598,7 @@ impl InferenceContext<'_> {
Statement::Let { pat, type_ref, initializer, else_branch } => {
let decl_ty = type_ref
.as_ref()
.map(|tr| this.make_ty(tr))
.map(|&tr| this.make_body_ty(tr))
.unwrap_or_else(|| this.table.new_type_var());
let ty = if let Some(expr) = initializer {
@ -2141,7 +2141,8 @@ impl InferenceContext<'_> {
kind_id,
args.next().unwrap(), // `peek()` is `Some(_)`, so guaranteed no panic
self,
|this, type_ref| this.make_ty(type_ref),
&self.body.types,
|this, type_ref| this.make_body_ty(type_ref),
|this, c, ty| {
const_or_path_to_chalk(
this.db,

47
crates/hir-ty/src/infer/path.rs
View file

@ -94,8 +94,7 @@ impl InferenceContext<'_> {
return Some(ValuePathResolution::NonGeneric(ty));
};
let ctx = crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into());
let substs = ctx.substs_from_path(path, value_def, true);
let substs = self.with_body_ty_lowering(|ctx| ctx.substs_from_path(path, value_def, true));
let substs = substs.as_slice(Interner);
if let ValueNs::EnumVariantId(_) = value {
@ -152,8 +151,12 @@ impl InferenceContext<'_> {
let last = path.segments().last()?;
// Don't use `self.make_ty()` here as we need `orig_ns`.
let ctx =
crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into());
let ctx = crate::lower::TyLoweringContext::new(
self.db,
&self.resolver,
&self.body.types,
self.owner.into(),
);
let (ty, orig_ns) = ctx.lower_ty_ext(type_ref);
let ty = self.table.insert_type_vars(ty);
let ty = self.table.normalize_associated_types_in(ty);
@ -219,7 +222,7 @@ impl InferenceContext<'_> {
let _d;
let (resolved_segment, remaining_segments) = match path {
Path::Normal { .. } => {
Path::Normal { .. } | Path::BarePath(_) => {
assert!(remaining_index < path.segments().len());
(
path.segments().get(remaining_index - 1).unwrap(),
@ -243,17 +246,10 @@ impl InferenceContext<'_> {
(TypeNs::TraitId(trait_), true) => {
let segment =
remaining_segments.last().expect("there should be at least one segment here");
let ctx = crate::lower::TyLoweringContext::new(
self.db,
&self.resolver,
self.owner.into(),
);
let trait_ref = ctx.lower_trait_ref_from_resolved_path(
trait_,
resolved_segment,
self.table.new_type_var(),
);
let self_ty = self.table.new_type_var();
let trait_ref = self.with_body_ty_lowering(|ctx| {
ctx.lower_trait_ref_from_resolved_path(trait_, resolved_segment, self_ty)
});
self.resolve_trait_assoc_item(trait_ref, segment, id)
}
(def, _) => {
@ -263,17 +259,14 @@ impl InferenceContext<'_> {
// as Iterator>::Item::default`)
let remaining_segments_for_ty =
remaining_segments.take(remaining_segments.len() - 1);
let ctx = crate::lower::TyLoweringContext::new(
self.db,
&self.resolver,
self.owner.into(),
);
let (ty, _) = ctx.lower_partly_resolved_path(
def,
resolved_segment,
remaining_segments_for_ty,
true,
);
let (ty, _) = self.with_body_ty_lowering(|ctx| {
ctx.lower_partly_resolved_path(
def,
resolved_segment,
remaining_segments_for_ty,
true,
)
});
if ty.is_unknown() {
return None;
}

326
crates/hir-ty/src/lower.rs
View file

@ -34,6 +34,7 @@ use hir_def::{
resolver::{HasResolver, LifetimeNs, Resolver, TypeNs},
type_ref::{
ConstRef, LifetimeRef, TraitBoundModifier, TraitRef as HirTraitRef, TypeBound, TypeRef,
TypeRefId, TypesMap, TypesSourceMap,
},
AdtId, AssocItemId, CallableDefId, ConstId, ConstParamId, DefWithBodyId, EnumId, EnumVariantId,
FunctionId, GenericDefId, GenericParamId, HasModule, ImplId, InTypeConstLoc, ItemContainerId,
@ -41,7 +42,6 @@ use hir_def::{
TypeOwnerId, UnionId, VariantId,
};
use hir_expand::{name::Name, ExpandResult};
use intern::Interned;
use la_arena::{Arena, ArenaMap};
use rustc_hash::FxHashSet;
use rustc_pattern_analysis::Captures;
@ -122,6 +122,11 @@ pub struct TyLoweringContext<'a> {
pub db: &'a dyn HirDatabase,
resolver: &'a Resolver,
generics: OnceCell<Option<Generics>>,
types_map: &'a TypesMap,
/// If this is set, that means we're in a context of a freshly expanded macro, and that means
/// we should not use `TypeRefId` in diagnostics because the caller won't have the `TypesMap`,
/// instead we need to put `TypeSource` from the source map.
types_source_map: Option<&'a TypesSourceMap>,
in_binders: DebruijnIndex,
// FIXME: Should not be an `Option` but `Resolver` currently does not return owners in all cases
// where expected
@ -138,13 +143,20 @@ pub struct TyLoweringContext<'a> {
}
impl<'a> TyLoweringContext<'a> {
pub fn new(db: &'a dyn HirDatabase, resolver: &'a Resolver, owner: TypeOwnerId) -> Self {
Self::new_maybe_unowned(db, resolver, Some(owner))
pub fn new(
db: &'a dyn HirDatabase,
resolver: &'a Resolver,
types_map: &'a TypesMap,
owner: TypeOwnerId,
) -> Self {
Self::new_maybe_unowned(db, resolver, types_map, None, Some(owner))
}
pub fn new_maybe_unowned(
db: &'a dyn HirDatabase,
resolver: &'a Resolver,
types_map: &'a TypesMap,
types_source_map: Option<&'a TypesSourceMap>,
owner: Option<TypeOwnerId>,
) -> Self {
let impl_trait_mode = ImplTraitLoweringState::Disallowed;
@ -154,6 +166,8 @@ impl<'a> TyLoweringContext<'a> {
db,
resolver,
generics: OnceCell::new(),
types_map,
types_source_map,
owner,
in_binders,
impl_trait_mode,
@ -201,6 +215,16 @@ impl<'a> TyLoweringContext<'a> {
pub fn with_type_param_mode(self, type_param_mode: ParamLoweringMode) -> Self {
Self { type_param_mode, ..self }
}
pub fn impl_trait_mode(&mut self, impl_trait_mode: ImplTraitLoweringMode) -> &mut Self {
self.impl_trait_mode = ImplTraitLoweringState::new(impl_trait_mode);
self
}
pub fn type_param_mode(&mut self, type_param_mode: ParamLoweringMode) -> &mut Self {
self.type_param_mode = type_param_mode;
self
}
}
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
@ -230,7 +254,7 @@ pub enum ParamLoweringMode {
}
impl<'a> TyLoweringContext<'a> {
pub fn lower_ty(&self, type_ref: &TypeRef) -> Ty {
pub fn lower_ty(&self, type_ref: TypeRefId) -> Ty {
self.lower_ty_ext(type_ref).0
}
@ -254,12 +278,13 @@ impl<'a> TyLoweringContext<'a> {
.as_ref()
}
pub fn lower_ty_ext(&self, type_ref: &TypeRef) -> (Ty, Option<TypeNs>) {
pub fn lower_ty_ext(&self, type_ref_id: TypeRefId) -> (Ty, Option<TypeNs>) {
let mut res = None;
let type_ref = &self.types_map[type_ref_id];
let ty = match type_ref {
TypeRef::Never => TyKind::Never.intern(Interner),
TypeRef::Tuple(inner) => {
let inner_tys = inner.iter().map(|tr| self.lower_ty(tr));
let inner_tys = inner.iter().map(|&tr| self.lower_ty(tr));
TyKind::Tuple(inner_tys.len(), Substitution::from_iter(Interner, inner_tys))
.intern(Interner)
}
@ -268,38 +293,43 @@ impl<'a> TyLoweringContext<'a> {
res = res_;
ty
}
TypeRef::RawPtr(inner, mutability) => {
&TypeRef::RawPtr(inner, mutability) => {
let inner_ty = self.lower_ty(inner);
TyKind::Raw(lower_to_chalk_mutability(*mutability), inner_ty).intern(Interner)
TyKind::Raw(lower_to_chalk_mutability(mutability), inner_ty).intern(Interner)
}
TypeRef::Array(inner, len) => {
let inner_ty = self.lower_ty(inner);
let const_len = self.lower_const(len, TyBuilder::usize());
TypeRef::Array(array) => {
let inner_ty = self.lower_ty(array.ty);
let const_len = self.lower_const(&array.len, TyBuilder::usize());
TyKind::Array(inner_ty, const_len).intern(Interner)
}
TypeRef::Slice(inner) => {
&TypeRef::Slice(inner) => {
let inner_ty = self.lower_ty(inner);
TyKind::Slice(inner_ty).intern(Interner)
}
TypeRef::Reference(inner, lifetime, mutability) => {
let inner_ty = self.lower_ty(inner);
TypeRef::Reference(ref_) => {
let inner_ty = self.lower_ty(ref_.ty);
// FIXME: It should infer the eldided lifetimes instead of stubbing with static
let lifetime =
lifetime.as_ref().map_or_else(error_lifetime, |lr| self.lower_lifetime(lr));
TyKind::Ref(lower_to_chalk_mutability(*mutability), lifetime, inner_ty)
let lifetime = ref_
.lifetime
.as_ref()
.map_or_else(error_lifetime, |lr| self.lower_lifetime(lr));
TyKind::Ref(lower_to_chalk_mutability(ref_.mutability), lifetime, inner_ty)
.intern(Interner)
}
TypeRef::Placeholder => TyKind::Error.intern(Interner),
&TypeRef::Fn(ref params, variadic, is_unsafe, ref abi) => {
TypeRef::Fn(fn_) => {
let substs = self.with_shifted_in(DebruijnIndex::ONE, |ctx| {
Substitution::from_iter(Interner, params.iter().map(|(_, tr)| ctx.lower_ty(tr)))
Substitution::from_iter(
Interner,
fn_.params().iter().map(|&(_, tr)| ctx.lower_ty(tr)),
)
});
TyKind::Function(FnPointer {
num_binders: 0, // FIXME lower `for<'a> fn()` correctly
sig: FnSig {
abi: abi.as_ref().map_or(FnAbi::Rust, FnAbi::from_symbol),
safety: if is_unsafe { Safety::Unsafe } else { Safety::Safe },
variadic,
abi: fn_.abi().as_ref().map_or(FnAbi::Rust, FnAbi::from_symbol),
safety: if fn_.is_unsafe() { Safety::Unsafe } else { Safety::Safe },
variadic: fn_.is_varargs(),
},
substitution: FnSubst(substs),
})
@ -351,8 +381,8 @@ impl<'a> TyLoweringContext<'a> {
ImplTraitLoweringState::Param(counter) => {
let idx = counter.get();
// Count the number of `impl Trait` things that appear within our bounds.
// Since t hose have been emitted as implicit type args already.
counter.set(idx + count_impl_traits(type_ref) as u16);
// Since those have been emitted as implicit type args already.
counter.set(idx + self.count_impl_traits(type_ref_id) as u16);
let kind = self
.generics()
.expect("param impl trait lowering must be in a generic def")
@ -376,7 +406,7 @@ impl<'a> TyLoweringContext<'a> {
let idx = counter.get();
// Count the number of `impl Trait` things that appear within our bounds.
// Since t hose have been emitted as implicit type args already.
counter.set(idx + count_impl_traits(type_ref) as u16);
counter.set(idx + self.count_impl_traits(type_ref_id) as u16);
let kind = self
.generics()
.expect("variable impl trait lowering must be in a generic def")
@ -432,12 +462,40 @@ impl<'a> TyLoweringContext<'a> {
match expander.enter_expand::<ast::Type>(self.db.upcast(), macro_call, resolver)
{
Ok(ExpandResult { value: Some((mark, expanded)), .. }) => {
let ctx = expander.ctx(self.db.upcast());
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx = expander.ctx(
self.db.upcast(),
&mut types_map,
&mut types_source_map,
);
// FIXME: Report syntax errors in expansion here
let type_ref = TypeRef::from_ast(&ctx, expanded.tree());
drop(expander);
let ty = self.lower_ty(&type_ref);
// FIXME: That may be better served by mutating `self` then restoring, but this requires
// making it `&mut self`.
let inner_ctx = TyLoweringContext {
db: self.db,
resolver: self.resolver,
generics: self.generics.clone(),
types_map: &types_map,
types_source_map: Some(&types_source_map),
in_binders: self.in_binders,
owner: self.owner,
type_param_mode: self.type_param_mode,
impl_trait_mode: self.impl_trait_mode.take(),
expander: RefCell::new(self.expander.take()),
unsized_types: RefCell::new(self.unsized_types.take()),
};
let ty = inner_ctx.lower_ty(type_ref);
self.impl_trait_mode.swap(&inner_ctx.impl_trait_mode);
*self.expander.borrow_mut() = inner_ctx.expander.into_inner();
*self.unsized_types.borrow_mut() = inner_ctx.unsized_types.into_inner();
self.expander.borrow_mut().as_mut().unwrap().exit(mark);
Some(ty)
@ -463,7 +521,8 @@ impl<'a> TyLoweringContext<'a> {
/// This is only for `generic_predicates_for_param`, where we can't just
/// lower the self types of the predicates since that could lead to cycles.
/// So we just check here if the `type_ref` resolves to a generic param, and which.
fn lower_ty_only_param(&self, type_ref: &TypeRef) -> Option<TypeOrConstParamId> {
fn lower_ty_only_param(&self, type_ref: TypeRefId) -> Option<TypeOrConstParamId> {
let type_ref = &self.types_map[type_ref];
let path = match type_ref {
TypeRef::Path(path) => path,
_ => return None,
@ -663,7 +722,7 @@ impl<'a> TyLoweringContext<'a> {
if matches!(resolution, TypeNs::TraitId(_)) && remaining_index.is_none() {
// trait object type without dyn
let bound = TypeBound::Path(path.clone(), TraitBoundModifier::None);
let ty = self.lower_dyn_trait(&[Interned::new(bound)]);
let ty = self.lower_dyn_trait(&[bound]);
return (ty, None);
}
@ -864,7 +923,7 @@ impl<'a> TyLoweringContext<'a> {
assert!(matches!(id, GenericParamId::TypeParamId(_)));
had_explicit_args = true;
if let GenericArg::Type(ty) = &args[0] {
substs.push(self.lower_ty(ty).cast(Interner));
substs.push(self.lower_ty(*ty).cast(Interner));
}
}
} else {
@ -901,6 +960,7 @@ impl<'a> TyLoweringContext<'a> {
id,
arg,
&mut (),
self.types_map,
|_, type_ref| self.lower_ty(type_ref),
|_, const_ref, ty| self.lower_const(const_ref, ty),
|_, lifetime_ref| self.lower_lifetime(lifetime_ref),
@ -998,7 +1058,7 @@ impl<'a> TyLoweringContext<'a> {
WherePredicate::ForLifetime { target, bound, .. }
| WherePredicate::TypeBound { target, bound } => {
let self_ty = match target {
WherePredicateTypeTarget::TypeRef(type_ref) => self.lower_ty(type_ref),
WherePredicateTypeTarget::TypeRef(type_ref) => self.lower_ty(*type_ref),
&WherePredicateTypeTarget::TypeOrConstParam(local_id) => {
let param_id = hir_def::TypeOrConstParamId { parent: def, local_id };
match self.type_param_mode {
@ -1029,12 +1089,12 @@ impl<'a> TyLoweringContext<'a> {
pub(crate) fn lower_type_bound(
&'a self,
bound: &'a Interned<TypeBound>,
bound: &'a TypeBound,
self_ty: Ty,
ignore_bindings: bool,
) -> impl Iterator<Item = QuantifiedWhereClause> + 'a {
let mut trait_ref = None;
let clause = match bound.as_ref() {
let clause = match bound {
TypeBound::Path(path, TraitBoundModifier::None) => {
trait_ref = self.lower_trait_ref_from_path(path, self_ty);
trait_ref.clone().map(WhereClause::Implemented).map(crate::wrap_empty_binders)
@ -1079,10 +1139,10 @@ impl<'a> TyLoweringContext<'a> {
fn assoc_type_bindings_from_type_bound(
&'a self,
bound: &'a Interned<TypeBound>,
bound: &'a TypeBound,
trait_ref: TraitRef,
) -> impl Iterator<Item = QuantifiedWhereClause> + 'a {
let last_segment = match bound.as_ref() {
let last_segment = match bound {
TypeBound::Path(path, TraitBoundModifier::None) | TypeBound::ForLifetime(_, path) => {
path.segments().last()
}
@ -1111,7 +1171,7 @@ impl<'a> TyLoweringContext<'a> {
// this point (`super_trait_ref.substitution`).
let substitution = self.substs_from_path_segment(
// FIXME: This is hack. We shouldn't really build `PathSegment` directly.
PathSegment { name: &binding.name, args_and_bindings: binding.args.as_deref() },
PathSegment { name: &binding.name, args_and_bindings: binding.args.as_ref() },
Some(associated_ty.into()),
false, // this is not relevant
Some(super_trait_ref.self_type_parameter(Interner)),
@ -1131,8 +1191,8 @@ impl<'a> TyLoweringContext<'a> {
let mut predicates: SmallVec<[_; 1]> = SmallVec::with_capacity(
binding.type_ref.as_ref().map_or(0, |_| 1) + binding.bounds.len(),
);
if let Some(type_ref) = &binding.type_ref {
match (type_ref, &self.impl_trait_mode) {
if let Some(type_ref) = binding.type_ref {
match (&self.types_map[type_ref], &self.impl_trait_mode) {
(TypeRef::ImplTrait(_), ImplTraitLoweringState::Disallowed) => (),
(
_,
@ -1179,6 +1239,8 @@ impl<'a> TyLoweringContext<'a> {
let mut ext = TyLoweringContext::new_maybe_unowned(
self.db,
self.resolver,
self.types_map,
self.types_source_map,
self.owner,
)
.with_type_param_mode(self.type_param_mode);
@ -1216,7 +1278,7 @@ impl<'a> TyLoweringContext<'a> {
})
}
fn lower_dyn_trait(&self, bounds: &[Interned<TypeBound>]) -> Ty {
fn lower_dyn_trait(&self, bounds: &[TypeBound]) -> Ty {
let self_ty = TyKind::BoundVar(BoundVar::new(DebruijnIndex::INNERMOST, 0)).intern(Interner);
// INVARIANT: The principal trait bound, if present, must come first. Others may be in any
// order but should be in the same order for the same set but possibly different order of
@ -1314,7 +1376,7 @@ impl<'a> TyLoweringContext<'a> {
}
}
fn lower_impl_trait(&self, bounds: &[Interned<TypeBound>], krate: CrateId) -> ImplTrait {
fn lower_impl_trait(&self, bounds: &[TypeBound], krate: CrateId) -> ImplTrait {
cov_mark::hit!(lower_rpit);
let self_ty = TyKind::BoundVar(BoundVar::new(DebruijnIndex::INNERMOST, 0)).intern(Interner);
let predicates = self.with_shifted_in(DebruijnIndex::ONE, |ctx| {
@ -1366,6 +1428,17 @@ impl<'a> TyLoweringContext<'a> {
None => error_lifetime(),
}
}
// FIXME: This does not handle macros!
fn count_impl_traits(&self, type_ref: TypeRefId) -> usize {
let mut count = 0;
TypeRef::walk(type_ref, self.types_map, &mut |type_ref| {
if matches!(type_ref, TypeRef::ImplTrait(_)) {
count += 1;
}
});
count
}
}
/// Build the signature of a callable item (function, struct or enum variant).
@ -1386,17 +1459,6 @@ pub fn associated_type_shorthand_candidates<R>(
named_associated_type_shorthand_candidates(db, def, res, None, |name, _, id| cb(name, id))
}
// FIXME: This does not handle macros!
fn count_impl_traits(type_ref: &TypeRef) -> usize {
let mut count = 0;
type_ref.walk(&mut |type_ref| {
if matches!(type_ref, TypeRef::ImplTrait(_)) {
count += 1;
}
});
count
}
fn named_associated_type_shorthand_candidates<R>(
db: &dyn HirDatabase,
// If the type parameter is defined in an impl and we're in a method, there
@ -1500,10 +1562,10 @@ pub(crate) fn field_types_query(
};
let generics = generics(db.upcast(), def);
let mut res = ArenaMap::default();
let ctx = TyLoweringContext::new(db, &resolver, def.into())
let ctx = TyLoweringContext::new(db, &resolver, var_data.types_map(), def.into())
.with_type_param_mode(ParamLoweringMode::Variable);
for (field_id, field_data) in var_data.fields().iter() {
res.insert(field_id, make_binders(db, &generics, ctx.lower_ty(&field_data.type_ref)));
res.insert(field_id, make_binders(db, &generics, ctx.lower_ty(field_data.type_ref)));
}
Arc::new(res)
}
@ -1523,38 +1585,38 @@ pub(crate) fn generic_predicates_for_param_query(
assoc_name: Option<Name>,
) -> GenericPredicates {
let resolver = def.resolver(db.upcast());
let ctx = if let GenericDefId::FunctionId(_) = def {
TyLoweringContext::new(db, &resolver, def.into())
let mut ctx = if let GenericDefId::FunctionId(_) = def {
TyLoweringContext::new(db, &resolver, TypesMap::EMPTY, def.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Variable)
.with_type_param_mode(ParamLoweringMode::Variable)
} else {
TyLoweringContext::new(db, &resolver, def.into())
TyLoweringContext::new(db, &resolver, TypesMap::EMPTY, def.into())
.with_type_param_mode(ParamLoweringMode::Variable)
};
let generics = generics(db.upcast(), def);
// we have to filter out all other predicates *first*, before attempting to lower them
let predicate = |(pred, &def): &(&_, _)| match pred {
let predicate = |pred: &_, def: &_, ctx: &TyLoweringContext<'_>| match pred {
WherePredicate::ForLifetime { target, bound, .. }
| WherePredicate::TypeBound { target, bound, .. } => {
let invalid_target = match target {
WherePredicateTypeTarget::TypeRef(type_ref) => {
ctx.lower_ty_only_param(type_ref) != Some(param_id)
ctx.lower_ty_only_param(*type_ref) != Some(param_id)
}
&WherePredicateTypeTarget::TypeOrConstParam(local_id) => {
let target_id = TypeOrConstParamId { parent: def, local_id };
let target_id = TypeOrConstParamId { parent: *def, local_id };
target_id != param_id
}
};
if invalid_target {
// If this is filtered out without lowering, `?Sized` is not gathered into `ctx.unsized_types`
if let TypeBound::Path(_, TraitBoundModifier::Maybe) = &**bound {
ctx.lower_where_predicate(pred, &def, true).for_each(drop);
if let TypeBound::Path(_, TraitBoundModifier::Maybe) = bound {
ctx.lower_where_predicate(pred, def, true).for_each(drop);
}
return false;
}
match &**bound {
match bound {
TypeBound::ForLifetime(_, path) | TypeBound::Path(path, _) => {
// Only lower the bound if the trait could possibly define the associated
// type we're looking for.
@ -1577,13 +1639,15 @@ pub(crate) fn generic_predicates_for_param_query(
}
WherePredicate::Lifetime { .. } => false,
};
let mut predicates: Vec<_> = resolver
.where_predicates_in_scope()
.filter(predicate)
.flat_map(|(pred, def)| {
ctx.lower_where_predicate(pred, def, true).map(|p| make_binders(db, &generics, p))
})
.collect();
let mut predicates = Vec::new();
for (params, def) in resolver.all_generic_params() {
ctx.types_map = &params.types_map;
predicates.extend(
params.where_predicates().filter(|pred| predicate(pred, def, &ctx)).flat_map(|pred| {
ctx.lower_where_predicate(pred, def, true).map(|p| make_binders(db, &generics, p))
}),
);
}
let subst = generics.bound_vars_subst(db, DebruijnIndex::INNERMOST);
if !subst.is_empty(Interner) {
@ -1630,23 +1694,27 @@ pub(crate) fn trait_environment_query(
def: GenericDefId,
) -> Arc<TraitEnvironment> {
let resolver = def.resolver(db.upcast());
let ctx = if let GenericDefId::FunctionId(_) = def {
TyLoweringContext::new(db, &resolver, def.into())
let mut ctx = if let GenericDefId::FunctionId(_) = def {
TyLoweringContext::new(db, &resolver, TypesMap::EMPTY, def.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Param)
.with_type_param_mode(ParamLoweringMode::Placeholder)
} else {
TyLoweringContext::new(db, &resolver, def.into())
TyLoweringContext::new(db, &resolver, TypesMap::EMPTY, def.into())
.with_type_param_mode(ParamLoweringMode::Placeholder)
};
let mut traits_in_scope = Vec::new();
let mut clauses = Vec::new();
for (pred, def) in resolver.where_predicates_in_scope() {
for pred in ctx.lower_where_predicate(pred, def, false) {
if let WhereClause::Implemented(tr) = &pred.skip_binders() {
traits_in_scope.push((tr.self_type_parameter(Interner).clone(), tr.hir_trait_id()));
for (params, def) in resolver.all_generic_params() {
ctx.types_map = &params.types_map;
for pred in params.where_predicates() {
for pred in ctx.lower_where_predicate(pred, def, false) {
if let WhereClause::Implemented(tr) = pred.skip_binders() {
traits_in_scope
.push((tr.self_type_parameter(Interner).clone(), tr.hir_trait_id()));
}
let program_clause: chalk_ir::ProgramClause<Interner> = pred.cast(Interner);
clauses.push(program_clause.into_from_env_clause(Interner));
}
let program_clause: chalk_ir::ProgramClause<Interner> = pred.cast(Interner);
clauses.push(program_clause.into_from_env_clause(Interner));
}
}
@ -1725,18 +1793,20 @@ where
}
_ => (ImplTraitLoweringMode::Disallowed, ParamLoweringMode::Variable),
};
let ctx = TyLoweringContext::new(db, &resolver, def.into())
let mut ctx = TyLoweringContext::new(db, &resolver, TypesMap::EMPTY, def.into())
.with_impl_trait_mode(impl_trait_lowering)
.with_type_param_mode(param_lowering);
let generics = generics(db.upcast(), def);
let mut predicates = resolver
.where_predicates_in_scope()
.filter(|(pred, def)| filter(pred, def))
.flat_map(|(pred, def)| {
ctx.lower_where_predicate(pred, def, false).map(|p| make_binders(db, &generics, p))
})
.collect::<Vec<_>>();
let mut predicates = Vec::new();
for (params, def) in resolver.all_generic_params() {
ctx.types_map = &params.types_map;
predicates.extend(params.where_predicates().filter(|pred| filter(pred, def)).flat_map(
|pred| {
ctx.lower_where_predicate(pred, def, false).map(|p| make_binders(db, &generics, p))
},
));
}
if generics.len() > 0 {
let subst = generics.bound_vars_subst(db, DebruijnIndex::INNERMOST);
@ -1812,18 +1882,19 @@ pub(crate) fn generic_defaults_query(db: &dyn HirDatabase, def: GenericDefId) ->
let resolver = def.resolver(db.upcast());
let parent_start_idx = generic_params.len_self();
let ctx = TyLoweringContext::new(db, &resolver, def.into())
let mut ctx = TyLoweringContext::new(db, &resolver, TypesMap::EMPTY, def.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Disallowed)
.with_type_param_mode(ParamLoweringMode::Variable);
GenericDefaults(Some(Arc::from_iter(generic_params.iter().enumerate().map(
|(idx, (id, p))| {
GenericDefaults(Some(Arc::from_iter(generic_params.iter_with_types_map().enumerate().map(
|(idx, ((id, p), types_map))| {
ctx.types_map = types_map;
match p {
GenericParamDataRef::TypeParamData(p) => {
let ty = p.default.as_ref().map_or(TyKind::Error.intern(Interner), |ty| {
// Each default can only refer to previous parameters.
// Type variable default referring to parameter coming
// after it is forbidden (FIXME: report diagnostic)
fallback_bound_vars(ctx.lower_ty(ty), idx, parent_start_idx)
fallback_bound_vars(ctx.lower_ty(*ty), idx, parent_start_idx)
});
crate::make_binders(db, &generic_params, ty.cast(Interner))
}
@ -1835,7 +1906,7 @@ pub(crate) fn generic_defaults_query(db: &dyn HirDatabase, def: GenericDefId) ->
let mut val = p.default.as_ref().map_or_else(
|| unknown_const_as_generic(db.const_param_ty(id)),
|c| {
let c = ctx.lower_const(c, ctx.lower_ty(&p.ty));
let c = ctx.lower_const(c, ctx.lower_ty(p.ty));
c.cast(Interner)
},
);
@ -1875,14 +1946,14 @@ pub(crate) fn generic_defaults_recover(
fn fn_sig_for_fn(db: &dyn HirDatabase, def: FunctionId) -> PolyFnSig {
let data = db.function_data(def);
let resolver = def.resolver(db.upcast());
let ctx_params = TyLoweringContext::new(db, &resolver, def.into())
let ctx_params = TyLoweringContext::new(db, &resolver, &data.types_map, def.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Variable)
.with_type_param_mode(ParamLoweringMode::Variable);
let params = data.params.iter().map(|tr| ctx_params.lower_ty(tr));
let ctx_ret = TyLoweringContext::new(db, &resolver, def.into())
let params = data.params.iter().map(|&tr| ctx_params.lower_ty(tr));
let ctx_ret = TyLoweringContext::new(db, &resolver, &data.types_map, def.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Opaque)
.with_type_param_mode(ParamLoweringMode::Variable);
let ret = ctx_ret.lower_ty(&data.ret_type);
let ret = ctx_ret.lower_ty(data.ret_type);
let generics = generics(db.upcast(), def.into());
let sig = CallableSig::from_params_and_return(
params,
@ -1911,28 +1982,33 @@ fn type_for_const(db: &dyn HirDatabase, def: ConstId) -> Binders<Ty> {
let data = db.const_data(def);
let generics = generics(db.upcast(), def.into());
let resolver = def.resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, def.into())
let ctx = TyLoweringContext::new(db, &resolver, &data.types_map, def.into())
.with_type_param_mode(ParamLoweringMode::Variable);
make_binders(db, &generics, ctx.lower_ty(&data.type_ref))
make_binders(db, &generics, ctx.lower_ty(data.type_ref))
}
/// Build the declared type of a static.
fn type_for_static(db: &dyn HirDatabase, def: StaticId) -> Binders<Ty> {
let data = db.static_data(def);
let resolver = def.resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, def.into());
let ctx = TyLoweringContext::new(db, &resolver, &data.types_map, def.into());
Binders::empty(Interner, ctx.lower_ty(&data.type_ref))
Binders::empty(Interner, ctx.lower_ty(data.type_ref))
}
fn fn_sig_for_struct_constructor(db: &dyn HirDatabase, def: StructId) -> PolyFnSig {
let struct_data = db.struct_data(def);
let fields = struct_data.variant_data.fields();
let resolver = def.resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, AdtId::from(def).into())
.with_type_param_mode(ParamLoweringMode::Variable);
let params = fields.iter().map(|(_, field)| ctx.lower_ty(&field.type_ref));
let ctx = TyLoweringContext::new(
db,
&resolver,
struct_data.variant_data.types_map(),
AdtId::from(def).into(),
)
.with_type_param_mode(ParamLoweringMode::Variable);
let params = fields.iter().map(|(_, field)| ctx.lower_ty(field.type_ref));
let (ret, binders) = type_for_adt(db, def.into()).into_value_and_skipped_binders();
Binders::new(
binders,
@ -1962,9 +2038,14 @@ fn fn_sig_for_enum_variant_constructor(db: &dyn HirDatabase, def: EnumVariantId)
let var_data = db.enum_variant_data(def);
let fields = var_data.variant_data.fields();
let resolver = def.resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, DefWithBodyId::VariantId(def).into())
.with_type_param_mode(ParamLoweringMode::Variable);
let params = fields.iter().map(|(_, field)| ctx.lower_ty(&field.type_ref));
let ctx = TyLoweringContext::new(
db,
&resolver,
var_data.variant_data.types_map(),
DefWithBodyId::VariantId(def).into(),
)
.with_type_param_mode(ParamLoweringMode::Variable);
let params = fields.iter().map(|(_, field)| ctx.lower_ty(field.type_ref));
let (ret, binders) =
type_for_adt(db, def.lookup(db.upcast()).parent.into()).into_value_and_skipped_binders();
Binders::new(
@ -2005,15 +2086,17 @@ fn type_for_adt(db: &dyn HirDatabase, adt: AdtId) -> Binders<Ty> {
fn type_for_type_alias(db: &dyn HirDatabase, t: TypeAliasId) -> Binders<Ty> {
let generics = generics(db.upcast(), t.into());
let resolver = t.resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, t.into())
let type_alias_data = db.type_alias_data(t);
let ctx = TyLoweringContext::new(db, &resolver, &type_alias_data.types_map, t.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Opaque)
.with_type_param_mode(ParamLoweringMode::Variable);
let type_alias_data = db.type_alias_data(t);
let inner = if type_alias_data.is_extern {
TyKind::Foreign(crate::to_foreign_def_id(t)).intern(Interner)
} else {
let type_ref = &type_alias_data.type_ref;
ctx.lower_ty(type_ref.as_deref().unwrap_or(&TypeRef::Error))
type_alias_data
.type_ref
.map(|type_ref| ctx.lower_ty(type_ref))
.unwrap_or_else(|| TyKind::Error.intern(Interner))
};
make_binders(db, &generics, inner)
}
@ -2086,9 +2169,9 @@ pub(crate) fn impl_self_ty_query(db: &dyn HirDatabase, impl_id: ImplId) -> Binde
let impl_data = db.impl_data(impl_id);
let resolver = impl_id.resolver(db.upcast());
let generics = generics(db.upcast(), impl_id.into());
let ctx = TyLoweringContext::new(db, &resolver, impl_id.into())
let ctx = TyLoweringContext::new(db, &resolver, &impl_data.types_map, impl_id.into())
.with_type_param_mode(ParamLoweringMode::Variable);
make_binders(db, &generics, ctx.lower_ty(&impl_data.self_ty))
make_binders(db, &generics, ctx.lower_ty(impl_data.self_ty))
}
// returns None if def is a type arg
@ -2096,13 +2179,13 @@ pub(crate) fn const_param_ty_query(db: &dyn HirDatabase, def: ConstParamId) -> T
let parent_data = db.generic_params(def.parent());
let data = &parent_data[def.local_id()];
let resolver = def.parent().resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, def.parent().into());
let ctx = TyLoweringContext::new(db, &resolver, &parent_data.types_map, def.parent().into());
match data {
TypeOrConstParamData::TypeParamData(_) => {
never!();
Ty::new(Interner, TyKind::Error)
}
TypeOrConstParamData::ConstParamData(d) => ctx.lower_ty(&d.ty),
TypeOrConstParamData::ConstParamData(d) => ctx.lower_ty(d.ty),
}
}
@ -2118,7 +2201,7 @@ pub(crate) fn impl_self_ty_recover(
pub(crate) fn impl_trait_query(db: &dyn HirDatabase, impl_id: ImplId) -> Option<Binders<TraitRef>> {
let impl_data = db.impl_data(impl_id);
let resolver = impl_id.resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, impl_id.into())
let ctx = TyLoweringContext::new(db, &resolver, &impl_data.types_map, impl_id.into())
.with_type_param_mode(ParamLoweringMode::Variable);
let (self_ty, binders) = db.impl_self_ty(impl_id).into_value_and_skipped_binders();
let target_trait = impl_data.target_trait.as_ref()?;
@ -2132,10 +2215,10 @@ pub(crate) fn return_type_impl_traits(
// FIXME unify with fn_sig_for_fn instead of doing lowering twice, maybe
let data = db.function_data(def);
let resolver = def.resolver(db.upcast());
let ctx_ret = TyLoweringContext::new(db, &resolver, def.into())
let ctx_ret = TyLoweringContext::new(db, &resolver, &data.types_map, def.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Opaque)
.with_type_param_mode(ParamLoweringMode::Variable);
let _ret = ctx_ret.lower_ty(&data.ret_type);
let _ret = ctx_ret.lower_ty(data.ret_type);
let generics = generics(db.upcast(), def.into());
let return_type_impl_traits = ImplTraits {
impl_traits: match ctx_ret.impl_trait_mode {
@ -2156,10 +2239,10 @@ pub(crate) fn type_alias_impl_traits(
) -> Option<Arc<Binders<ImplTraits>>> {
let data = db.type_alias_data(def);
let resolver = def.resolver(db.upcast());
let ctx = TyLoweringContext::new(db, &resolver, def.into())
let ctx = TyLoweringContext::new(db, &resolver, &data.types_map, def.into())
.with_impl_trait_mode(ImplTraitLoweringMode::Opaque)
.with_type_param_mode(ParamLoweringMode::Variable);
if let Some(type_ref) = &data.type_ref {
if let Some(type_ref) = data.type_ref {
let _ty = ctx.lower_ty(type_ref);
}
let type_alias_impl_traits = ImplTraits {
@ -2191,7 +2274,8 @@ pub(crate) fn generic_arg_to_chalk<'a, T>(
kind_id: GenericParamId,
arg: &'a GenericArg,
this: &mut T,
for_type: impl FnOnce(&mut T, &TypeRef) -> Ty + 'a,
types_map: &TypesMap,
for_type: impl FnOnce(&mut T, TypeRefId) -> Ty + 'a,
for_const: impl FnOnce(&mut T, &ConstRef, Ty) -> Const + 'a,
for_lifetime: impl FnOnce(&mut T, &LifetimeRef) -> Lifetime + 'a,
) -> crate::GenericArg {
@ -2204,7 +2288,7 @@ pub(crate) fn generic_arg_to_chalk<'a, T>(
GenericParamId::LifetimeParamId(_) => ParamKind::Lifetime,
};
match (arg, kind) {
(GenericArg::Type(type_ref), ParamKind::Type) => for_type(this, type_ref).cast(Interner),
(GenericArg::Type(type_ref), ParamKind::Type) => for_type(this, *type_ref).cast(Interner),
(GenericArg::Const(c), ParamKind::Const(c_ty)) => for_const(this, c, c_ty).cast(Interner),
(GenericArg::Lifetime(lifetime_ref), ParamKind::Lifetime) => {
for_lifetime(this, lifetime_ref).cast(Interner)
@ -2215,7 +2299,7 @@ pub(crate) fn generic_arg_to_chalk<'a, T>(
// 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.
if let TypeRef::Path(p) = t {
if let TypeRef::Path(p) = &types_map[*t] {
if let Some(p) = p.mod_path() {
if p.kind == PathKind::Plain {
if let [n] = p.segments() {

3
crates/hir-ty/src/mir/eval.rs
View file

@ -2849,7 +2849,8 @@ impl Evaluator<'_> {
}
let layout = self.layout_adt(id.0, subst.clone())?;
match data.variant_data.as_ref() {
VariantData::Record(fields) | VariantData::Tuple(fields) => {
VariantData::Record { fields, .. }
| VariantData::Tuple { fields, .. } => {
let field_types = self.db.field_types(s.into());
for (field, _) in fields.iter() {
let offset = layout

29
crates/hir-ty/src/mir/lower.rs
View file

@ -14,6 +14,7 @@ use hir_def::{
lang_item::{LangItem, LangItemTarget},
path::Path,
resolver::{HasResolver, ResolveValueResult, Resolver, ValueNs},
type_ref::TypesMap,
AdtId, DefWithBodyId, EnumVariantId, GeneralConstId, HasModule, ItemContainerId, LocalFieldId,
Lookup, TraitId, TupleId, TypeOrConstParamId,
};
@ -28,7 +29,7 @@ use triomphe::Arc;
use crate::{
consteval::ConstEvalError,
db::{HirDatabase, InternedClosure},
display::HirDisplay,
display::{hir_display_with_types_map, HirDisplay},
error_lifetime,
generics::generics,
infer::{cast::CastTy, unify::InferenceTable, CaptureKind, CapturedItem, TypeMismatch},
@ -247,8 +248,15 @@ impl From<LayoutError> for MirLowerError {
}
impl MirLowerError {
fn unresolved_path(db: &dyn HirDatabase, p: &Path, edition: Edition) -> Self {
Self::UnresolvedName(p.display(db, edition).to_string())
fn unresolved_path(
db: &dyn HirDatabase,
p: &Path,
edition: Edition,
types_map: &TypesMap,
) -> Self {
Self::UnresolvedName(
hir_display_with_types_map(p, types_map).display(db, edition).to_string(),
)
}
}
@ -451,7 +459,12 @@ impl<'ctx> MirLowerCtx<'ctx> {
.resolver
.resolve_path_in_value_ns_fully(self.db.upcast(), p, hygiene)
.ok_or_else(|| {
MirLowerError::unresolved_path(self.db, p, self.edition())
MirLowerError::unresolved_path(
self.db,
p,
self.edition(),
&self.body.types,
)
})?;
self.resolver.reset_to_guard(resolver_guard);
result
@ -824,7 +837,9 @@ impl<'ctx> MirLowerCtx<'ctx> {
let variant_id =
self.infer.variant_resolution_for_expr(expr_id).ok_or_else(|| match path {
Some(p) => MirLowerError::UnresolvedName(
p.display(self.db, self.edition()).to_string(),
hir_display_with_types_map(&**p, &self.body.types)
.display(self.db, self.edition())
.to_string(),
),
None => MirLowerError::RecordLiteralWithoutPath,
})?;
@ -1359,10 +1374,10 @@ impl<'ctx> MirLowerCtx<'ctx> {
};
let edition = self.edition();
let unresolved_name =
|| MirLowerError::unresolved_path(self.db, c.as_ref(), edition);
|| MirLowerError::unresolved_path(self.db, c, edition, &self.body.types);
let pr = self
.resolver
.resolve_path_in_value_ns(self.db.upcast(), c.as_ref(), HygieneId::ROOT)
.resolve_path_in_value_ns(self.db.upcast(), c, HygieneId::ROOT)
.ok_or_else(unresolved_name)?;
match pr {
ResolveValueResult::ValueNs(v, _) => {

5
crates/hir-ty/src/mir/lower/pattern_matching.rs
View file

@ -349,8 +349,9 @@ impl MirLowerCtx<'_> {
mode,
)?,
None => {
let unresolved_name =
|| MirLowerError::unresolved_path(self.db, p, self.edition());
let unresolved_name = || {
MirLowerError::unresolved_path(self.db, p, self.edition(), &self.body.types)
};
let hygiene = self.body.pat_path_hygiene(pattern);
let pr = self
.resolver

10
crates/hir-ty/src/utils.rs
View file

@ -163,10 +163,12 @@ fn direct_super_traits(db: &dyn DefDatabase, trait_: TraitId, cb: impl FnMut(Tra
WherePredicate::ForLifetime { target, bound, .. }
| WherePredicate::TypeBound { target, bound } => {
let is_trait = match target {
WherePredicateTypeTarget::TypeRef(type_ref) => match &**type_ref {
TypeRef::Path(p) => p.is_self_type(),
_ => false,
},
WherePredicateTypeTarget::TypeRef(type_ref) => {
match &generic_params.types_map[*type_ref] {
TypeRef::Path(p) => p.is_self_type(),
_ => false,
}
}
WherePredicateTypeTarget::TypeOrConstParam(local_id) => {
Some(*local_id) == trait_self
}

50
crates/hir/src/db.rs
View file

@ -4,35 +4,43 @@
//!
//! But we need this for at least LRU caching at the query level.
pub use hir_def::db::{
AttrsQuery, BlockDefMapQuery, BlockItemTreeQuery, BodyQuery, BodyWithSourceMapQuery,
ConstDataQuery, ConstVisibilityQuery, CrateDefMapQuery, CrateLangItemsQuery,
CrateNotableTraitsQuery, CrateSupportsNoStdQuery, DefDatabase, DefDatabaseStorage,
EnumDataQuery, EnumVariantDataWithDiagnosticsQuery, ExprScopesQuery, ExternCrateDeclDataQuery,
FieldVisibilitiesQuery, FieldsAttrsQuery, FieldsAttrsSourceMapQuery, FileItemTreeQuery,
FunctionDataQuery, FunctionVisibilityQuery, GenericParamsQuery, ImplDataWithDiagnosticsQuery,
ImportMapQuery, InternAnonymousConstQuery, InternBlockQuery, InternConstQuery, InternDatabase,
InternDatabaseStorage, InternEnumQuery, InternExternBlockQuery, InternExternCrateQuery,
InternFunctionQuery, InternImplQuery, InternInTypeConstQuery, InternMacro2Query,
InternMacroRulesQuery, InternProcMacroQuery, InternStaticQuery, InternStructQuery,
InternTraitAliasQuery, InternTraitQuery, InternTypeAliasQuery, InternUnionQuery,
InternUseQuery, LangItemQuery, Macro2DataQuery, MacroRulesDataQuery, ProcMacroDataQuery,
StaticDataQuery, StructDataWithDiagnosticsQuery, TraitAliasDataQuery,
TraitDataWithDiagnosticsQuery, TypeAliasDataQuery, UnionDataWithDiagnosticsQuery,
AttrsQuery, BlockDefMapQuery, BlockItemTreeQuery, BlockItemTreeWithSourceMapQuery, BodyQuery,
BodyWithSourceMapQuery, ConstDataQuery, ConstVisibilityQuery, CrateDefMapQuery,
CrateLangItemsQuery, CrateNotableTraitsQuery, CrateSupportsNoStdQuery, DefDatabase,
DefDatabaseStorage, EnumDataQuery, EnumVariantDataWithDiagnosticsQuery,
ExpandProcAttrMacrosQuery, ExprScopesQuery, ExternCrateDeclDataQuery, FieldVisibilitiesQuery,
FieldsAttrsQuery, FieldsAttrsSourceMapQuery, FileItemTreeQuery, FileItemTreeWithSourceMapQuery,
FunctionDataQuery, FunctionVisibilityQuery, GenericParamsQuery,
GenericParamsWithSourceMapQuery, ImplDataWithDiagnosticsQuery, ImportMapQuery,
IncludeMacroInvocQuery, InternAnonymousConstQuery, InternBlockQuery, InternConstQuery,
InternDatabase, InternDatabaseStorage, InternEnumQuery, InternExternBlockQuery,
InternExternCrateQuery, InternFunctionQuery, InternImplQuery, InternInTypeConstQuery,
InternMacro2Query, InternMacroRulesQuery, InternProcMacroQuery, InternStaticQuery,
InternStructQuery, InternTraitAliasQuery, InternTraitQuery, InternTypeAliasQuery,
InternUnionQuery, InternUseQuery, LangItemQuery, Macro2DataQuery, MacroDefQuery,
MacroRulesDataQuery, NotableTraitsInDepsQuery, ProcMacroDataQuery, StaticDataQuery,
StructDataWithDiagnosticsQuery, TraitAliasDataQuery, TraitDataWithDiagnosticsQuery,
TypeAliasDataQuery, UnionDataWithDiagnosticsQuery,
};
pub use hir_expand::db::{
AstIdMapQuery, DeclMacroExpanderQuery, ExpandDatabase, ExpandDatabaseStorage,
ExpandProcMacroQuery, InternMacroCallQuery, InternSyntaxContextQuery, MacroArgQuery,
ParseMacroExpansionErrorQuery, ParseMacroExpansionQuery, ProcMacrosQuery, RealSpanMapQuery,
ParseMacroExpansionErrorQuery, ParseMacroExpansionQuery, ProcMacroSpanQuery, ProcMacrosQuery,
RealSpanMapQuery,
};
pub use hir_ty::db::{
AdtDatumQuery, AdtVarianceQuery, AssociatedTyDataQuery, AssociatedTyValueQuery, BorrowckQuery,
CallableItemSignatureQuery, ConstEvalDiscriminantQuery, ConstEvalQuery, ConstEvalStaticQuery,
ConstParamTyQuery, FieldTypesQuery, FnDefDatumQuery, FnDefVarianceQuery, GenericDefaultsQuery,
GenericPredicatesForParamQuery, GenericPredicatesQuery, HirDatabase, HirDatabaseStorage,
ImplDatumQuery, ImplSelfTyQuery, ImplTraitQuery, IncoherentInherentImplCratesQuery,
ConstParamTyQuery, DynCompatibilityOfTraitQuery, FieldTypesQuery, FnDefDatumQuery,
FnDefVarianceQuery, GenericDefaultsQuery, GenericPredicatesForParamQuery,
GenericPredicatesQuery, GenericPredicatesWithoutParentQuery, HirDatabase, HirDatabaseStorage,
ImplDatumQuery, ImplSelfTyQuery, ImplTraitQuery, IncoherentInherentImplCratesQuery, InferQuery,
InherentImplsInBlockQuery, InherentImplsInCrateQuery, InternCallableDefQuery,
InternClosureQuery, InternCoroutineQuery, InternImplTraitIdQuery, InternLifetimeParamIdQuery,
InternTypeOrConstParamIdQuery, LayoutOfAdtQuery, MirBodyQuery, ProgramClausesForChalkEnvQuery,
ReturnTypeImplTraitsQuery, TargetDataLayoutQuery, TraitDatumQuery, TraitEnvironmentQuery,
TraitImplsInBlockQuery, TraitImplsInCrateQuery, TraitImplsInDepsQuery, TyQuery, ValueTyQuery,
InternTypeOrConstParamIdQuery, LayoutOfAdtQuery, LayoutOfTyQuery, LookupImplMethodQuery,
MirBodyForClosureQuery, MirBodyQuery, MonomorphizedMirBodyForClosureQuery,
MonomorphizedMirBodyQuery, ProgramClausesForChalkEnvQuery, ReturnTypeImplTraitsQuery,
TargetDataLayoutQuery, TraitDatumQuery, TraitEnvironmentQuery, TraitImplsInBlockQuery,
TraitImplsInCrateQuery, TraitImplsInDepsQuery, TraitSolveQuery, TyQuery,
TypeAliasImplTraitsQuery, ValueTyQuery,
};

99
crates/hir/src/display.rs
View file

@ -12,12 +12,11 @@ use hir_def::{
};
use hir_ty::{
display::{
write_bounds_like_dyn_trait_with_prefix, write_visibility, HirDisplay, HirDisplayError,
HirFormatter, SizedByDefault,
hir_display_with_types_map, write_bounds_like_dyn_trait_with_prefix, write_visibility,
HirDisplay, HirDisplayError, HirDisplayWithTypesMap, HirFormatter, SizedByDefault,
},
AliasEq, AliasTy, Interner, ProjectionTyExt, TraitRefExt, TyKind, WhereClause,
};
use intern::Interned;
use itertools::Itertools;
use crate::{
@ -113,7 +112,7 @@ impl HirDisplay for Function {
f.write_str(&pat_str)?;
f.write_str(": ")?;
type_ref.hir_fmt(f)?;
type_ref.hir_fmt(f, &data.types_map)?;
}
if data.is_varargs() {
@ -129,28 +128,30 @@ impl HirDisplay for Function {
// Use ugly pattern match to strip the Future trait.
// Better way?
let ret_type = if !data.is_async() {
&data.ret_type
Some(data.ret_type)
} else {
match &*data.ret_type {
TypeRef::ImplTrait(bounds) => match bounds[0].as_ref() {
TypeBound::Path(path, _) => {
path.segments().iter().last().unwrap().args_and_bindings.unwrap().bindings
match &data.types_map[data.ret_type] {
TypeRef::ImplTrait(bounds) => match &bounds[0] {
TypeBound::Path(path, _) => Some(
*path.segments().iter().last().unwrap().args_and_bindings.unwrap().bindings
[0]
.type_ref
.as_ref()
.unwrap()
}
_ => &TypeRef::Error,
.unwrap(),
),
_ => None,
},
_ => &TypeRef::Error,
_ => None,
}
};
match ret_type {
TypeRef::Tuple(tup) if tup.is_empty() => {}
ty => {
f.write_str(" -> ")?;
ty.hir_fmt(f)?;
if let Some(ret_type) = ret_type {
match &data.types_map[ret_type] {
TypeRef::Tuple(tup) if tup.is_empty() => {}
_ => {
f.write_str(" -> ")?;
ret_type.hir_fmt(f, &data.types_map)?;
}
}
}
@ -192,23 +193,23 @@ fn write_impl_header(impl_: &Impl, f: &mut HirFormatter<'_>) -> Result<(), HirDi
impl HirDisplay for SelfParam {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
let data = f.db.function_data(self.func);
let param = data.params.first().unwrap();
match &**param {
let param = *data.params.first().unwrap();
match &data.types_map[param] {
TypeRef::Path(p) if p.is_self_type() => f.write_str("self"),
TypeRef::Reference(inner, lifetime, mut_) if matches!(&**inner, TypeRef::Path(p) if p.is_self_type()) =>
TypeRef::Reference(ref_) if matches!(&data.types_map[ref_.ty], TypeRef::Path(p) if p.is_self_type()) =>
{
f.write_char('&')?;
if let Some(lifetime) = lifetime {
if let Some(lifetime) = &ref_.lifetime {
write!(f, "{} ", lifetime.name.display(f.db.upcast(), f.edition()))?;
}
if let hir_def::type_ref::Mutability::Mut = mut_ {
if let hir_def::type_ref::Mutability::Mut = ref_.mutability {
f.write_str("mut ")?;
}
f.write_str("self")
}
ty => {
_ => {
f.write_str("self: ")?;
ty.hir_fmt(f)
param.hir_fmt(f, &data.types_map)
}
}
}
@ -393,7 +394,7 @@ impl HirDisplay for Variant {
let data = self.variant_data(f.db);
match &*data {
VariantData::Unit => {}
VariantData::Tuple(fields) => {
VariantData::Tuple { fields, types_map } => {
f.write_char('(')?;
let mut first = true;
for (_, field) in fields.iter() {
@ -403,11 +404,11 @@ impl HirDisplay for Variant {
f.write_str(", ")?;
}
// Enum variant fields must be pub.
field.type_ref.hir_fmt(f)?;
field.type_ref.hir_fmt(f, types_map)?;
}
f.write_char(')')?;
}
VariantData::Record(_) => {
VariantData::Record { .. } => {
if let Some(limit) = f.entity_limit {
write_fields(&self.fields(f.db), false, limit, true, f)?;
}
@ -579,13 +580,13 @@ fn write_generic_params(
write!(f, "{}", name.display(f.db.upcast(), f.edition()))?;
if let Some(default) = &ty.default {
f.write_str(" = ")?;
default.hir_fmt(f)?;
default.hir_fmt(f, &params.types_map)?;
}
}
TypeOrConstParamData::ConstParamData(c) => {
delim(f)?;
write!(f, "const {}: ", name.display(f.db.upcast(), f.edition()))?;
c.ty.hir_fmt(f)?;
c.ty.hir_fmt(f, &params.types_map)?;
if let Some(default) = &c.default {
f.write_str(" = ")?;
@ -615,7 +616,7 @@ fn write_where_clause(
Ok(true)
}
fn has_disaplayable_predicates(params: &Interned<GenericParams>) -> bool {
fn has_disaplayable_predicates(params: &GenericParams) -> bool {
params.where_predicates().any(|pred| {
!matches!(
pred,
@ -626,21 +627,20 @@ fn has_disaplayable_predicates(params: &Interned<GenericParams>) -> bool {
}
fn write_where_predicates(
params: &Interned<GenericParams>,
params: &GenericParams,
f: &mut HirFormatter<'_>,
) -> Result<(), HirDisplayError> {
use WherePredicate::*;
// unnamed type targets are displayed inline with the argument itself, e.g. `f: impl Y`.
let is_unnamed_type_target =
|params: &Interned<GenericParams>, target: &WherePredicateTypeTarget| {
matches!(target,
WherePredicateTypeTarget::TypeOrConstParam(id) if params[*id].name().is_none()
)
};
let is_unnamed_type_target = |params: &GenericParams, target: &WherePredicateTypeTarget| {
matches!(target,
WherePredicateTypeTarget::TypeOrConstParam(id) if params[*id].name().is_none()
)
};
let write_target = |target: &WherePredicateTypeTarget, f: &mut HirFormatter<'_>| match target {
WherePredicateTypeTarget::TypeRef(ty) => ty.hir_fmt(f),
WherePredicateTypeTarget::TypeRef(ty) => ty.hir_fmt(f, &params.types_map),
WherePredicateTypeTarget::TypeOrConstParam(id) => match params[*id].name() {
Some(name) => write!(f, "{}", name.display(f.db.upcast(), f.edition())),
None => f.write_str("{unnamed}"),
@ -668,7 +668,7 @@ fn write_where_predicates(
TypeBound { target, bound } => {
write_target(target, f)?;
f.write_str(": ")?;
bound.hir_fmt(f)?;
bound.hir_fmt(f, &params.types_map)?;
}
Lifetime { target, bound } => {
let target = target.name.display(f.db.upcast(), f.edition());
@ -681,14 +681,16 @@ fn write_where_predicates(
write!(f, "for<{lifetimes}> ")?;
write_target(target, f)?;
f.write_str(": ")?;
bound.hir_fmt(f)?;
bound.hir_fmt(f, &params.types_map)?;
}
}
while let Some(nxt) = iter.next_if(|nxt| check_same_target(pred, nxt)) {
f.write_str(" + ")?;
match nxt {
TypeBound { bound, .. } | ForLifetime { bound, .. } => bound.hir_fmt(f)?,
TypeBound { bound, .. } | ForLifetime { bound, .. } => {
bound.hir_fmt(f, &params.types_map)?
}
Lifetime { bound, .. } => {
write!(f, "{}", bound.name.display(f.db.upcast(), f.edition()))?
}
@ -716,7 +718,7 @@ impl HirDisplay for Const {
Some(name) => write!(f, "{}: ", name.display(f.db.upcast(), f.edition()))?,
None => f.write_str("_: ")?,
}
data.type_ref.hir_fmt(f)?;
data.type_ref.hir_fmt(f, &data.types_map)?;
Ok(())
}
}
@ -730,7 +732,7 @@ impl HirDisplay for Static {
f.write_str("mut ")?;
}
write!(f, "{}: ", data.name.display(f.db.upcast(), f.edition()))?;
data.type_ref.hir_fmt(f)?;
data.type_ref.hir_fmt(f, &data.types_map)?;
Ok(())
}
}
@ -813,11 +815,14 @@ impl HirDisplay for TypeAlias {
write_generic_params(def_id, f)?;
if !data.bounds.is_empty() {
f.write_str(": ")?;
f.write_joined(data.bounds.iter(), " + ")?;
f.write_joined(
data.bounds.iter().map(|bound| hir_display_with_types_map(bound, &data.types_map)),
" + ",
)?;
}
if let Some(ty) = &data.type_ref {
if let Some(ty) = data.type_ref {
f.write_str(" = ")?;
ty.hir_fmt(f)?;
ty.hir_fmt(f, &data.types_map)?;
}
write_where_clause(def_id, f)?;
Ok(())

8
crates/hir/src/lib.rs
View file

@ -2424,8 +2424,8 @@ impl SelfParam {
func_data
.params
.first()
.map(|param| match &**param {
TypeRef::Reference(.., mutability) => match mutability {
.map(|&param| match &func_data.types_map[param] {
TypeRef::Reference(ref_) => match ref_.mutability {
hir_def::type_ref::Mutability::Shared => Access::Shared,
hir_def::type_ref::Mutability::Mut => Access::Exclusive,
},
@ -2751,10 +2751,6 @@ impl TypeAlias {
Module { id: self.id.module(db.upcast()) }
}
pub fn type_ref(self, db: &dyn HirDatabase) -> Option<TypeRef> {
db.type_alias_data(self.id).type_ref.as_deref().cloned()
}
pub fn ty(self, db: &dyn HirDatabase) -> Type {
Type::from_def(db, self.id)
}

23
crates/hir/src/semantics.rs
View file

@ -16,7 +16,7 @@ use hir_def::{
nameres::{MacroSubNs, ModuleOrigin},
path::ModPath,
resolver::{self, HasResolver, Resolver, TypeNs},
type_ref::Mutability,
type_ref::{Mutability, TypesMap, TypesSourceMap},
AsMacroCall, DefWithBodyId, FunctionId, MacroId, StructId, TraitId, VariantId,
};
use hir_expand::{
@ -1269,19 +1269,28 @@ impl<'db> SemanticsImpl<'db> {
pub fn resolve_type(&self, ty: &ast::Type) -> Option<Type> {
let analyze = self.analyze(ty.syntax())?;
let ctx = LowerCtx::new(self.db.upcast(), analyze.file_id);
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx =
LowerCtx::new(self.db.upcast(), analyze.file_id, &mut types_map, &mut types_source_map);
let type_ref = crate::TypeRef::from_ast(&ctx, ty.clone());
let ty = hir_ty::TyLoweringContext::new_maybe_unowned(
self.db,
&analyze.resolver,
&types_map,
None,
analyze.resolver.type_owner(),
)
.lower_ty(&crate::TypeRef::from_ast(&ctx, ty.clone()));
.lower_ty(type_ref);
Some(Type::new_with_resolver(self.db, &analyze.resolver, ty))
}
pub fn resolve_trait(&self, path: &ast::Path) -> Option<Trait> {
let analyze = self.analyze(path.syntax())?;
let ctx = LowerCtx::new(self.db.upcast(), analyze.file_id);
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx =
LowerCtx::new(self.db.upcast(), analyze.file_id, &mut types_map, &mut types_source_map);
let hir_path = Path::from_src(&ctx, path.clone())?;
match analyze.resolver.resolve_path_in_type_ns_fully(self.db.upcast(), &hir_path)? {
TypeNs::TraitId(id) => Some(Trait { id }),
@ -1963,13 +1972,17 @@ impl SemanticsScope<'_> {
/// Resolve a path as-if it was written at the given scope. This is
/// necessary a heuristic, as it doesn't take hygiene into account.
pub fn speculative_resolve(&self, ast_path: &ast::Path) -> Option<PathResolution> {
let ctx = LowerCtx::new(self.db.upcast(), self.file_id);
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx =
LowerCtx::new(self.db.upcast(), self.file_id, &mut types_map, &mut types_source_map);
let path = Path::from_src(&ctx, ast_path.clone())?;
resolve_hir_path(
self.db,
&self.resolver,
&path,
name_hygiene(self.db, InFile::new(self.file_id, ast_path.syntax())),
&types_map,
)
}

47
crates/hir/src/source_analyzer.rs
View file

@ -24,7 +24,7 @@ use hir_def::{
nameres::MacroSubNs,
path::{ModPath, Path, PathKind},
resolver::{resolver_for_scope, Resolver, TypeNs, ValueNs},
type_ref::Mutability,
type_ref::{Mutability, TypesMap, TypesSourceMap},
AsMacroCall, AssocItemId, ConstId, DefWithBodyId, FieldId, FunctionId, ItemContainerId,
LocalFieldId, Lookup, ModuleDefId, StructId, TraitId, VariantId,
};
@ -614,7 +614,10 @@ impl SourceAnalyzer {
db: &dyn HirDatabase,
macro_call: InFile<&ast::MacroCall>,
) -> Option<Macro> {
let ctx = LowerCtx::new(db.upcast(), macro_call.file_id);
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx =
LowerCtx::new(db.upcast(), macro_call.file_id, &mut types_map, &mut types_source_map);
let path = macro_call.value.path().and_then(|ast| Path::from_src(&ctx, ast))?;
self.resolver
.resolve_path_as_macro(db.upcast(), path.mod_path()?, Some(MacroSubNs::Bang))
@ -632,7 +635,7 @@ impl SourceAnalyzer {
Pat::Path(path) => path,
_ => return None,
};
let res = resolve_hir_path(db, &self.resolver, path, HygieneId::ROOT)?;
let res = resolve_hir_path(db, &self.resolver, path, HygieneId::ROOT, TypesMap::EMPTY)?;
match res {
PathResolution::Def(def) => Some(def),
_ => None,
@ -726,14 +729,16 @@ impl SourceAnalyzer {
return resolved;
}
let ctx = LowerCtx::new(db.upcast(), self.file_id);
let (mut types_map, mut types_source_map) =
(TypesMap::default(), TypesSourceMap::default());
let ctx = LowerCtx::new(db.upcast(), self.file_id, &mut types_map, &mut types_source_map);
let hir_path = Path::from_src(&ctx, path.clone())?;
// Case where path is a qualifier of a use tree, e.g. foo::bar::{Baz, Qux} where we are
// trying to resolve foo::bar.
if let Some(use_tree) = parent().and_then(ast::UseTree::cast) {
if use_tree.coloncolon_token().is_some() {
return resolve_hir_path_qualifier(db, &self.resolver, &hir_path);
return resolve_hir_path_qualifier(db, &self.resolver, &hir_path, &types_map);
}
}
@ -750,7 +755,7 @@ impl SourceAnalyzer {
// Case where path is a qualifier of another path, e.g. foo::bar::Baz where we are
// trying to resolve foo::bar.
if path.parent_path().is_some() {
return match resolve_hir_path_qualifier(db, &self.resolver, &hir_path) {
return match resolve_hir_path_qualifier(db, &self.resolver, &hir_path, &types_map) {
None if meta_path.is_some() => {
path.first_segment().and_then(|it| it.name_ref()).and_then(|name_ref| {
ToolModule::by_name(db, self.resolver.krate().into(), &name_ref.text())
@ -821,7 +826,7 @@ impl SourceAnalyzer {
};
}
if parent().map_or(false, |it| ast::Visibility::can_cast(it.kind())) {
resolve_hir_path_qualifier(db, &self.resolver, &hir_path)
resolve_hir_path_qualifier(db, &self.resolver, &hir_path, &types_map)
} else {
resolve_hir_path_(
db,
@ -829,6 +834,7 @@ impl SourceAnalyzer {
&hir_path,
prefer_value_ns,
name_hygiene(db, InFile::new(self.file_id, path.syntax())),
&types_map,
)
}
}
@ -1156,8 +1162,9 @@ pub(crate) fn resolve_hir_path(
resolver: &Resolver,
path: &Path,
hygiene: HygieneId,
types_map: &TypesMap,
) -> Option<PathResolution> {
resolve_hir_path_(db, resolver, path, false, hygiene)
resolve_hir_path_(db, resolver, path, false, hygiene, types_map)
}
#[inline]
@ -1178,13 +1185,19 @@ fn resolve_hir_path_(
path: &Path,
prefer_value_ns: bool,
hygiene: HygieneId,
types_map: &TypesMap,
) -> Option<PathResolution> {
let types = || {
let (ty, unresolved) = match path.type_anchor() {
Some(type_ref) => {
let (_, res) =
TyLoweringContext::new_maybe_unowned(db, resolver, resolver.type_owner())
.lower_ty_ext(type_ref);
let (_, res) = TyLoweringContext::new_maybe_unowned(
db,
resolver,
types_map,
None,
resolver.type_owner(),
)
.lower_ty_ext(type_ref);
res.map(|ty_ns| (ty_ns, path.segments().first()))
}
None => {
@ -1305,13 +1318,19 @@ fn resolve_hir_path_qualifier(
db: &dyn HirDatabase,
resolver: &Resolver,
path: &Path,
types_map: &TypesMap,
) -> Option<PathResolution> {
(|| {
let (ty, unresolved) = match path.type_anchor() {
Some(type_ref) => {
let (_, res) =
TyLoweringContext::new_maybe_unowned(db, resolver, resolver.type_owner())
.lower_ty_ext(type_ref);
let (_, res) = TyLoweringContext::new_maybe_unowned(
db,
resolver,
types_map,
None,
resolver.type_owner(),
)
.lower_ty_ext(type_ref);
res.map(|ty_ns| (ty_ns, path.segments().first()))
}
None => {

11
crates/hir/src/symbols.rs
View file

@ -8,7 +8,10 @@ use hir_def::{
TraitId,
};
use hir_expand::HirFileId;
use hir_ty::{db::HirDatabase, display::HirDisplay};
use hir_ty::{
db::HirDatabase,
display::{hir_display_with_types_map, HirDisplay},
};
use span::Edition;
use syntax::{ast::HasName, AstNode, AstPtr, SmolStr, SyntaxNode, SyntaxNodePtr, ToSmolStr};
@ -214,7 +217,11 @@ impl<'a> SymbolCollector<'a> {
fn collect_from_impl(&mut self, impl_id: ImplId) {
let impl_data = self.db.impl_data(impl_id);
let impl_name = Some(impl_data.self_ty.display(self.db, self.edition).to_smolstr());
let impl_name = Some(
hir_display_with_types_map(impl_data.self_ty, &impl_data.types_map)
.display(self.db, self.edition)
.to_smolstr(),
);
self.with_container_name(impl_name, |s| {
for &assoc_item_id in impl_data.items.iter() {
s.push_assoc_item(assoc_item_id)

20
crates/ide-db/src/apply_change.rs
View file

@ -100,16 +100,19 @@ impl RootDatabase {
hir::db::ConstEvalQuery
hir::db::ConstEvalStaticQuery
hir::db::ConstParamTyQuery
hir::db::DynCompatibilityOfTraitQuery
hir::db::FieldTypesQuery
hir::db::FnDefDatumQuery
hir::db::FnDefVarianceQuery
hir::db::GenericDefaultsQuery
hir::db::GenericPredicatesForParamQuery
hir::db::GenericPredicatesQuery
hir::db::GenericPredicatesWithoutParentQuery
hir::db::ImplDatumQuery
hir::db::ImplSelfTyQuery
hir::db::ImplTraitQuery
hir::db::IncoherentInherentImplCratesQuery
hir::db::InferQuery
hir::db::InherentImplsInBlockQuery
hir::db::InherentImplsInCrateQuery
hir::db::InternCallableDefQuery
@ -119,7 +122,12 @@ impl RootDatabase {
hir::db::InternLifetimeParamIdQuery
hir::db::InternTypeOrConstParamIdQuery
hir::db::LayoutOfAdtQuery
hir::db::LayoutOfTyQuery
hir::db::LookupImplMethodQuery
hir::db::MirBodyForClosureQuery
hir::db::MirBodyQuery
hir::db::MonomorphizedMirBodyForClosureQuery
hir::db::MonomorphizedMirBodyQuery
hir::db::ProgramClausesForChalkEnvQuery
hir::db::ReturnTypeImplTraitsQuery
hir::db::TargetDataLayoutQuery
@ -128,13 +136,16 @@ impl RootDatabase {
hir::db::TraitImplsInBlockQuery
hir::db::TraitImplsInCrateQuery
hir::db::TraitImplsInDepsQuery
hir::db::TraitSolveQuery
hir::db::TyQuery
hir::db::TypeAliasImplTraitsQuery
hir::db::ValueTyQuery
// DefDatabase
hir::db::AttrsQuery
hir::db::BlockDefMapQuery
hir::db::BlockItemTreeQuery
hir::db::BlockItemTreeWithSourceMapQuery
hir::db::BodyQuery
hir::db::BodyWithSourceMapQuery
hir::db::ConstDataQuery
@ -145,17 +156,21 @@ impl RootDatabase {
hir::db::CrateSupportsNoStdQuery
hir::db::EnumDataQuery
hir::db::EnumVariantDataWithDiagnosticsQuery
hir::db::ExpandProcAttrMacrosQuery
hir::db::ExprScopesQuery
hir::db::ExternCrateDeclDataQuery
hir::db::FieldVisibilitiesQuery
hir::db::FieldsAttrsQuery
hir::db::FieldsAttrsSourceMapQuery
hir::db::FileItemTreeQuery
hir::db::FileItemTreeWithSourceMapQuery
hir::db::FunctionDataQuery
hir::db::FunctionVisibilityQuery
hir::db::GenericParamsQuery
hir::db::GenericParamsWithSourceMapQuery
hir::db::ImplDataWithDiagnosticsQuery
hir::db::ImportMapQuery
hir::db::IncludeMacroInvocQuery
hir::db::InternAnonymousConstQuery
hir::db::InternBlockQuery
hir::db::InternConstQuery
@ -177,7 +192,9 @@ impl RootDatabase {
hir::db::InternUseQuery
hir::db::LangItemQuery
hir::db::Macro2DataQuery
hir::db::MacroDefQuery
hir::db::MacroRulesDataQuery
hir::db::NotableTraitsInDepsQuery
hir::db::ProcMacroDataQuery
hir::db::StaticDataQuery
hir::db::StructDataWithDiagnosticsQuery
@ -212,6 +229,7 @@ impl RootDatabase {
hir::db::MacroArgQuery
hir::db::ParseMacroExpansionErrorQuery
hir::db::ParseMacroExpansionQuery
hir::db::ProcMacroSpanQuery
hir::db::ProcMacrosQuery
hir::db::RealSpanMapQuery
@ -220,7 +238,9 @@ impl RootDatabase {
// SourceDatabase
base_db::ParseQuery
base_db::ParseErrorsQuery
base_db::CrateGraphQuery
base_db::CrateWorkspaceDataQuery
// SourceDatabaseExt
base_db::FileTextQuery

1
crates/stdx/src/lib.rs
View file

@ -10,6 +10,7 @@ pub mod non_empty_vec;
pub mod panic_context;
pub mod process;
pub mod rand;
pub mod thin_vec;
pub mod thread;
pub use always_assert::{always, never};

472
crates/stdx/src/thin_vec.rs Normal file
View file

@ -0,0 +1,472 @@
use std::alloc::{dealloc, handle_alloc_error, Layout};
use std::fmt;
use std::hash::{Hash, Hasher};
use std::marker::PhantomData;
use std::ops::{Deref, DerefMut};
use std::ptr::{addr_of_mut, slice_from_raw_parts_mut, NonNull};
/// A type that is functionally equivalent to `(Header, Box<[Item]>)`,
/// but all data is stored in one heap allocation and the pointer is thin,
/// so the whole thing's size is like a pointer.
pub struct ThinVecWithHeader<Header, Item> {
/// INVARIANT: Points to a valid heap allocation that contains `ThinVecInner<Header>`,
/// followed by (suitably aligned) `len` `Item`s.
ptr: NonNull<ThinVecInner<Header>>,
_marker: PhantomData<(Header, Box<[Item]>)>,
}
// SAFETY: We essentially own both the header and the items.
unsafe impl<Header: Send, Item: Send> Send for ThinVecWithHeader<Header, Item> {}
unsafe impl<Header: Sync, Item: Sync> Sync for ThinVecWithHeader<Header, Item> {}
#[derive(Clone)]
struct ThinVecInner<Header> {
header: Header,
len: usize,
}
impl<Header, Item> ThinVecWithHeader<Header, Item> {
/// # Safety
///
/// The iterator must produce `len` elements.
#[inline]
unsafe fn from_trusted_len_iter(
header: Header,
len: usize,
items: impl Iterator<Item = Item>,
) -> Self {
let (ptr, layout, items_offset) = Self::allocate(len);
struct DeallocGuard(*mut u8, Layout);
impl Drop for DeallocGuard {
fn drop(&mut self) {
// SAFETY: We allocated this above.
unsafe {
dealloc(self.0, self.1);
}
}
}
let _dealloc_guard = DeallocGuard(ptr.as_ptr().cast::<u8>(), layout);
// INVARIANT: Between `0..1` there are only initialized items.
struct ItemsGuard<Item>(*mut Item, *mut Item);
impl<Item> Drop for ItemsGuard<Item> {
fn drop(&mut self) {
// SAFETY: Our invariant.
unsafe {
slice_from_raw_parts_mut(self.0, self.1.offset_from(self.0) as usize)
.drop_in_place();
}
}
}
// SAFETY: We allocated enough space.
let mut items_ptr = unsafe { ptr.as_ptr().byte_add(items_offset).cast::<Item>() };
// INVARIANT: There are zero elements in this range.
let mut items_guard = ItemsGuard(items_ptr, items_ptr);
items.for_each(|item| {
// SAFETY: Our precondition guarantee we won't get more than `len` items, and we allocated
// enough space for `len` items.
unsafe {
items_ptr.write(item);
items_ptr = items_ptr.add(1);
}
// INVARIANT: We just initialized this item.
items_guard.1 = items_ptr;
});
// SAFETY: We allocated enough space.
unsafe {
ptr.write(ThinVecInner { header, len });
}
std::mem::forget(items_guard);
std::mem::forget(_dealloc_guard);
// INVARIANT: We allocated and initialized all fields correctly.
Self { ptr, _marker: PhantomData }
}
#[inline]
fn allocate(len: usize) -> (NonNull<ThinVecInner<Header>>, Layout, usize) {
let (layout, items_offset) = Self::layout(len);
// SAFETY: We always have `len`, so our allocation cannot be zero-sized.
let ptr = unsafe { std::alloc::alloc(layout).cast::<ThinVecInner<Header>>() };
let Some(ptr) = NonNull::<ThinVecInner<Header>>::new(ptr) else {
handle_alloc_error(layout);
};
(ptr, layout, items_offset)
}
#[inline]
#[allow(clippy::should_implement_trait)]
pub fn from_iter<I>(header: Header, items: I) -> Self
where
I: IntoIterator,
I::IntoIter: TrustedLen<Item = Item>,
{
let items = items.into_iter();
// SAFETY: `TrustedLen` guarantees the iterator length is exact.
unsafe { Self::from_trusted_len_iter(header, items.len(), items) }
}
#[inline]
fn items_offset(&self) -> usize {
// SAFETY: We `pad_to_align()` in `layout()`, so at most where accessing past the end of the allocation,
// which is allowed.
unsafe {
Layout::new::<ThinVecInner<Header>>().extend(Layout::new::<Item>()).unwrap_unchecked().1
}
}
#[inline]
fn header_and_len(&self) -> &ThinVecInner<Header> {
// SAFETY: By `ptr`'s invariant, it is correctly allocated and initialized.
unsafe { &*self.ptr.as_ptr() }
}
#[inline]
fn items_ptr(&self) -> *mut [Item] {
let len = self.header_and_len().len;
// SAFETY: `items_offset()` returns the correct offset of the items, where they are allocated.
let ptr = unsafe { self.ptr.as_ptr().byte_add(self.items_offset()).cast::<Item>() };
slice_from_raw_parts_mut(ptr, len)
}
#[inline]
pub fn header(&self) -> &Header {
&self.header_and_len().header
}
#[inline]
pub fn header_mut(&mut self) -> &mut Header {
// SAFETY: By `ptr`'s invariant, it is correctly allocated and initialized.
unsafe { &mut *addr_of_mut!((*self.ptr.as_ptr()).header) }
}
#[inline]
pub fn items(&self) -> &[Item] {
// SAFETY: `items_ptr()` gives a valid pointer.
unsafe { &*self.items_ptr() }
}
#[inline]
pub fn items_mut(&mut self) -> &mut [Item] {
// SAFETY: `items_ptr()` gives a valid pointer.
unsafe { &mut *self.items_ptr() }
}
#[inline]
pub fn len(&self) -> usize {
self.header_and_len().len
}
#[inline]
fn layout(len: usize) -> (Layout, usize) {
let (layout, items_offset) = Layout::new::<ThinVecInner<Header>>()
.extend(Layout::array::<Item>(len).expect("too big `ThinVec` requested"))
.expect("too big `ThinVec` requested");
let layout = layout.pad_to_align();
(layout, items_offset)
}
}
/// # Safety
///
/// The length reported must be exactly the number of items yielded.
pub unsafe trait TrustedLen: ExactSizeIterator {}
unsafe impl<T> TrustedLen for std::vec::IntoIter<T> {}
unsafe impl<T> TrustedLen for std::slice::Iter<'_, T> {}
unsafe impl<'a, T: Clone + 'a, I: TrustedLen<Item = &'a T>> TrustedLen for std::iter::Cloned<I> {}
unsafe impl<T, I: TrustedLen, F: FnMut(I::Item) -> T> TrustedLen for std::iter::Map<I, F> {}
unsafe impl<T> TrustedLen for std::vec::Drain<'_, T> {}
unsafe impl<T, const N: usize> TrustedLen for std::array::IntoIter<T, N> {}
impl<Header: Clone, Item: Clone> Clone for ThinVecWithHeader<Header, Item> {
#[inline]
fn clone(&self) -> Self {
Self::from_iter(self.header().clone(), self.items().iter().cloned())
}
}
impl<Header, Item> Drop for ThinVecWithHeader<Header, Item> {
#[inline]
fn drop(&mut self) {
// This must come before we drop `header`, because after that we cannot make a reference to it in `len()`.
let len = self.len();
// SAFETY: The contents are allocated and initialized.
unsafe {
addr_of_mut!((*self.ptr.as_ptr()).header).drop_in_place();
self.items_ptr().drop_in_place();
}
let (layout, _) = Self::layout(len);
// SAFETY: This was allocated in `new()` with the same layout calculation.
unsafe {
dealloc(self.ptr.as_ptr().cast::<u8>(), layout);
}
}
}
impl<Header: fmt::Debug, Item: fmt::Debug> fmt::Debug for ThinVecWithHeader<Header, Item> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("ThinVecWithHeader")
.field("header", self.header())
.field("items", &self.items())
.finish()
}
}
impl<Header: PartialEq, Item: PartialEq> PartialEq for ThinVecWithHeader<Header, Item> {
#[inline]
fn eq(&self, other: &Self) -> bool {
self.header() == other.header() && self.items() == other.items()
}
}
impl<Header: Eq, Item: Eq> Eq for ThinVecWithHeader<Header, Item> {}
impl<Header: Hash, Item: Hash> Hash for ThinVecWithHeader<Header, Item> {
#[inline]
fn hash<H: Hasher>(&self, state: &mut H) {
self.header().hash(state);
self.items().hash(state);
}
}
#[derive(Clone, PartialEq, Eq, Hash)]
pub struct ThinVec<T>(ThinVecWithHeader<(), T>);
impl<T> ThinVec<T> {
#[inline]
#[allow(clippy::should_implement_trait)]
pub fn from_iter<I>(values: I) -> Self
where
I: IntoIterator,
I::IntoIter: TrustedLen<Item = T>,
{
Self(ThinVecWithHeader::from_iter((), values))
}
#[inline]
pub fn len(&self) -> usize {
self.0.len()
}
#[inline]
pub fn iter(&self) -> std::slice::Iter<'_, T> {
(**self).iter()
}
#[inline]
pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, T> {
(**self).iter_mut()
}
}
impl<T> Deref for ThinVec<T> {
type Target = [T];
#[inline]
fn deref(&self) -> &Self::Target {
self.0.items()
}
}
impl<T> DerefMut for ThinVec<T> {
#[inline]
fn deref_mut(&mut self) -> &mut Self::Target {
self.0.items_mut()
}
}
impl<'a, T> IntoIterator for &'a ThinVec<T> {
type IntoIter = std::slice::Iter<'a, T>;
type Item = &'a T;
#[inline]
fn into_iter(self) -> Self::IntoIter {
self.iter()
}
}
impl<'a, T> IntoIterator for &'a mut ThinVec<T> {
type IntoIter = std::slice::IterMut<'a, T>;
type Item = &'a mut T;
#[inline]
fn into_iter(self) -> Self::IntoIter {
self.iter_mut()
}
}
impl<T: fmt::Debug> fmt::Debug for ThinVec<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_list().entries(&**self).finish()
}
}
/// A [`ThinVec`] that requires no allocation for the empty case.
#[derive(Clone, PartialEq, Eq, Hash)]
pub struct EmptyOptimizedThinVec<T>(Option<ThinVec<T>>);
impl<T> EmptyOptimizedThinVec<T> {
#[inline]
#[allow(clippy::should_implement_trait)]
pub fn from_iter<I>(values: I) -> Self
where
I: IntoIterator,
I::IntoIter: TrustedLen<Item = T>,
{
let values = values.into_iter();
if values.len() == 0 {
Self::empty()
} else {
Self(Some(ThinVec::from_iter(values)))
}
}
#[inline]
pub fn empty() -> Self {
Self(None)
}
#[inline]
pub fn len(&self) -> usize {
self.0.as_ref().map_or(0, ThinVec::len)
}
#[inline]
pub fn iter(&self) -> std::slice::Iter<'_, T> {
(**self).iter()
}
#[inline]
pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, T> {
(**self).iter_mut()
}
}
impl<T> Default for EmptyOptimizedThinVec<T> {
#[inline]
fn default() -> Self {
Self::empty()
}
}
impl<T> Deref for EmptyOptimizedThinVec<T> {
type Target = [T];
#[inline]
fn deref(&self) -> &Self::Target {
self.0.as_deref().unwrap_or_default()
}
}
impl<T> DerefMut for EmptyOptimizedThinVec<T> {
#[inline]
fn deref_mut(&mut self) -> &mut Self::Target {
self.0.as_deref_mut().unwrap_or_default()
}
}
impl<'a, T> IntoIterator for &'a EmptyOptimizedThinVec<T> {
type IntoIter = std::slice::Iter<'a, T>;
type Item = &'a T;
#[inline]
fn into_iter(self) -> Self::IntoIter {
self.iter()
}
}
impl<'a, T> IntoIterator for &'a mut EmptyOptimizedThinVec<T> {
type IntoIter = std::slice::IterMut<'a, T>;
type Item = &'a mut T;
#[inline]
fn into_iter(self) -> Self::IntoIter {
self.iter_mut()
}
}
impl<T: fmt::Debug> fmt::Debug for EmptyOptimizedThinVec<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_list().entries(&**self).finish()
}
}
/// Syntax:
///
/// ```ignore
/// thin_vec_with_header_struct! {
/// pub new(pub(crate)) struct MyCoolStruct, MyCoolStructHeader {
/// pub(crate) variable_length: [Ty],
/// pub field1: CopyTy,
/// pub field2: NonCopyTy; ref,
/// }
/// }
/// ```
#[doc(hidden)]
#[macro_export]
macro_rules! thin_vec_with_header_struct_ {
(@maybe_ref (ref) $($t:tt)*) => { &$($t)* };
(@maybe_ref () $($t:tt)*) => { $($t)* };
(
$vis:vis new($new_vis:vis) struct $struct:ident, $header:ident {
$items_vis:vis $items:ident : [$items_ty:ty],
$( $header_var_vis:vis $header_var:ident : $header_var_ty:ty $(; $ref:ident)?, )+
}
) => {
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
struct $header {
$( $header_var : $header_var_ty, )+
}
#[derive(Clone, Eq, PartialEq, Hash)]
$vis struct $struct($crate::thin_vec::ThinVecWithHeader<$header, $items_ty>);
impl $struct {
#[inline]
#[allow(unused)]
$new_vis fn new<I>(
$( $header_var: $header_var_ty, )+
$items: I,
) -> Self
where
I: ::std::iter::IntoIterator,
I::IntoIter: $crate::thin_vec::TrustedLen<Item = $items_ty>,
{
Self($crate::thin_vec::ThinVecWithHeader::from_iter(
$header { $( $header_var, )+ },
$items,
))
}
#[inline]
$items_vis fn $items(&self) -> &[$items_ty] {
self.0.items()
}
$(
#[inline]
$header_var_vis fn $header_var(&self) -> $crate::thin_vec_with_header_struct_!(@maybe_ref ($($ref)?) $header_var_ty) {
$crate::thin_vec_with_header_struct_!(@maybe_ref ($($ref)?) self.0.header().$header_var)
}
)+
}
impl ::std::fmt::Debug for $struct {
fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
f.debug_struct(stringify!($struct))
$( .field(stringify!($header_var), &self.$header_var()) )*
.field(stringify!($items), &self.$items())
.finish()
}
}
};
}
pub use crate::thin_vec_with_header_struct_ as thin_vec_with_header_struct;

2
xtask/src/tidy.rs
View file

@ -223,7 +223,7 @@ struct TidyDocs {
impl TidyDocs {
fn visit(&mut self, path: &Path, text: &str) {
// Tests and diagnostic fixes don't need module level comments.
if is_exclude_dir(path, &["tests", "test_data", "fixes", "grammar", "ra-salsa"]) {
if is_exclude_dir(path, &["tests", "test_data", "fixes", "grammar", "ra-salsa", "stdx"]) {
return;
}