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Prepare ItemScope for IDE import resolution

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This commit is contained in:
Lukas Wirth 2023-08-16 11:18:11 +02:00
parent 1b678231d7
commit af8048266c
11 changed files with 174 additions and 67 deletions
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18
crates/hir-def/src/find_path.rs
View file

@ -1293,4 +1293,22 @@ pub mod prelude {
"None",
);
}
#[test]
fn different_crate_renamed_through_dep() {
check_found_path(
r#"
//- /main.rs crate:main deps:intermediate
$0
//- /intermediate.rs crate:intermediate deps:std
pub extern crate std as std_renamed;
//- /std.rs crate:std
pub struct S;
"#,
"intermediate::std_renamed::S",
"intermediate::std_renamed::S",
"intermediate::std_renamed::S",
"intermediate::std_renamed::S",
);
}
}

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

@ -114,6 +114,9 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> FxIndexMap<ItemIn
for (name, per_ns) in visible_items {
for item in per_ns.iter_items() {
// FIXME: Not yet used, but will be once we handle doc(hidden) import sources
let is_doc_hidden = false;
let import_info = ImportInfo {
name: name.clone(),
container: module,
@ -121,15 +124,17 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> FxIndexMap<ItemIn
};
match depth_map.entry(item) {
Entry::Vacant(entry) => {
entry.insert(depth);
}
Entry::Vacant(entry) => _ = entry.insert((depth, is_doc_hidden)),
Entry::Occupied(mut entry) => {
if depth < *entry.get() {
entry.insert(depth);
} else {
let &(occ_depth, occ_is_doc_hidden) = entry.get();
// Prefer the one that is not doc(hidden),
// Otherwise, if both have the same doc(hidden)-ness and the new path is shorter, prefer that one.
let overwrite_entry = occ_is_doc_hidden && !is_doc_hidden
|| occ_is_doc_hidden == is_doc_hidden && depth < occ_depth;
if !overwrite_entry {
continue;
}
entry.insert((depth, is_doc_hidden));
}
}

130
crates/hir-def/src/item_scope.rs
View file

@ -6,6 +6,7 @@ use std::collections::hash_map::Entry;
use base_db::CrateId;
use hir_expand::{attrs::AttrId, db::ExpandDatabase, name::Name, AstId, MacroCallId};
use itertools::Itertools;
use la_arena::Idx;
use once_cell::sync::Lazy;
use profile::Count;
use rustc_hash::{FxHashMap, FxHashSet};
@ -32,15 +33,50 @@ pub struct PerNsGlobImports {
macros: FxHashSet<(LocalModuleId, Name)>,
}
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum ImportOrExternCrate {
Import(ImportId),
Glob(UseId),
ExternCrate(ExternCrateId),
}
impl ImportOrExternCrate {
pub fn into_import(self) -> Option<ImportId> {
match self {
ImportOrExternCrate::Import(it) => Some(it),
_ => None,
}
}
pub fn into_glob(self) -> Option<UseId> {
match self {
ImportOrExternCrate::Glob(it) => Some(it),
_ => None,
}
}
}
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub enum ImportOrDef {
Import(ImportId),
ExternCrate(ExternCrateId),
Def(ModuleDefId),
}
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub struct ImportId {
pub import: UseId,
pub idx: Idx<ast::UseTree>,
}
#[derive(Debug, Default, PartialEq, Eq)]
pub struct ItemScope {
_c: Count<Self>,
/// Defs visible in this scope. This includes `declarations`, but also
/// imports.
types: FxHashMap<Name, (ModuleDefId, Visibility)>,
values: FxHashMap<Name, (ModuleDefId, Visibility)>,
macros: FxHashMap<Name, (MacroId, Visibility)>,
types: FxHashMap<Name, (ModuleDefId, Visibility, Option<ImportOrExternCrate>)>,
values: FxHashMap<Name, (ModuleDefId, Visibility, Option<ImportId>)>,
macros: FxHashMap<Name, (MacroId, Visibility, Option<ImportId>)>,
unresolved: FxHashSet<Name>,
/// The defs declared in this scope. Each def has a single scope where it is
@ -50,7 +86,14 @@ pub struct ItemScope {
impls: Vec<ImplId>,
unnamed_consts: Vec<ConstId>,
/// Traits imported via `use Trait as _;`.
unnamed_trait_imports: FxHashMap<TraitId, Visibility>,
unnamed_trait_imports: FxHashMap<TraitId, (Visibility, Option<ImportId>)>,
// the resolutions of the imports of this scope
use_imports_types: FxHashMap<UseId, ImportOrDef>,
use_imports_values: FxHashMap<UseId, ImportOrDef>,
use_imports_macros: FxHashMap<UseId, ImportOrDef>,
use_decls: Vec<UseId>,
extern_crate_decls: Vec<ExternCrateId>,
/// Macros visible in current module in legacy textual scope
///
@ -121,8 +164,7 @@ impl ItemScope {
}
pub fn use_decls(&self) -> impl Iterator<Item = UseId> + ExactSizeIterator + '_ {
// FIXME: to be implemented
std::iter::empty()
self.use_decls.iter().copied()
}
pub fn impls(&self) -> impl Iterator<Item = ImplId> + ExactSizeIterator + '_ {
@ -132,13 +174,13 @@ impl ItemScope {
pub fn values(
&self,
) -> impl Iterator<Item = (ModuleDefId, Visibility)> + ExactSizeIterator + '_ {
self.values.values().copied()
self.values.values().copied().map(|(a, b, _)| (a, b))
}
pub fn types(
pub(crate) fn types(
&self,
) -> impl Iterator<Item = (ModuleDefId, Visibility)> + ExactSizeIterator + '_ {
self.types.values().copied()
self.types.values().copied().map(|(def, vis, _)| (def, vis))
}
pub fn unnamed_consts(&self) -> impl Iterator<Item = ConstId> + '_ {
@ -165,33 +207,48 @@ impl ItemScope {
}
pub(crate) fn type_(&self, name: &Name) -> Option<(ModuleDefId, Visibility)> {
self.types.get(name).copied()
self.types.get(name).copied().map(|(a, b, _)| (a, b))
}
/// XXX: this is O(N) rather than O(1), try to not introduce new usages.
pub(crate) fn name_of(&self, item: ItemInNs) -> Option<(&Name, Visibility)> {
let (def, mut iter) = match item {
ItemInNs::Macros(def) => {
return self.macros.iter().find_map(|(name, &(other_def, vis))| {
(other_def == def).then_some((name, vis))
});
}
ItemInNs::Types(def) => (def, self.types.iter()),
ItemInNs::Values(def) => (def, self.values.iter()),
};
iter.find_map(|(name, &(other_def, vis))| (other_def == def).then_some((name, vis)))
match item {
ItemInNs::Macros(def) => self
.macros
.iter()
.find_map(|(name, &(other_def, vis, _))| (other_def == def).then_some((name, vis))),
ItemInNs::Types(def) => self
.types
.iter()
.find_map(|(name, &(other_def, vis, _))| (other_def == def).then_some((name, vis))),
ItemInNs::Values(def) => self
.values
.iter()
.find_map(|(name, &(other_def, vis, _))| (other_def == def).then_some((name, vis))),
}
}
pub(crate) fn traits(&self) -> impl Iterator<Item = TraitId> + '_ {
self.types
.values()
.filter_map(|&(def, _)| match def {
.filter_map(|&(def, _, _)| match def {
ModuleDefId::TraitId(t) => Some(t),
_ => None,
})
.chain(self.unnamed_trait_imports.keys().copied())
}
pub(crate) fn resolutions(&self) -> impl Iterator<Item = (Option<Name>, PerNs)> + '_ {
self.entries().map(|(name, res)| (Some(name.clone()), res)).chain(
self.unnamed_trait_imports
.iter()
.map(|(tr, (vis, _))| (None, PerNs::types(ModuleDefId::TraitId(*tr), *vis))),
)
}
}
impl ItemScope {
pub(crate) fn declare(&mut self, def: ModuleDefId) {
self.declarations.push(def)
}
@ -278,11 +335,11 @@ impl ItemScope {
}
pub(crate) fn unnamed_trait_vis(&self, tr: TraitId) -> Option<Visibility> {
self.unnamed_trait_imports.get(&tr).copied()
self.unnamed_trait_imports.get(&tr).copied().map(|(a, _)| a)
}
pub(crate) fn push_unnamed_trait(&mut self, tr: TraitId, vis: Visibility) {
self.unnamed_trait_imports.insert(tr, vis);
self.unnamed_trait_imports.insert(tr, (vis, None));
}
pub(crate) fn push_res_with_import(
@ -343,27 +400,18 @@ impl ItemScope {
changed
}
pub(crate) fn resolutions(&self) -> impl Iterator<Item = (Option<Name>, PerNs)> + '_ {
self.entries().map(|(name, res)| (Some(name.clone()), res)).chain(
self.unnamed_trait_imports
.iter()
.map(|(tr, vis)| (None, PerNs::types(ModuleDefId::TraitId(*tr), *vis))),
)
}
/// Marks everything that is not a procedural macro as private to `this_module`.
pub(crate) fn censor_non_proc_macros(&mut self, this_module: ModuleId) {
self.types
.values_mut()
.chain(self.values.values_mut())
.map(|(def, vis, _)| (def, vis))
.chain(self.values.values_mut().map(|(def, vis, _)| (def, vis)))
.map(|(_, v)| v)
.chain(self.unnamed_trait_imports.values_mut())
.chain(self.unnamed_trait_imports.values_mut().map(|(vis, _)| vis))
.for_each(|vis| *vis = Visibility::Module(this_module));
for (mac, vis) in self.macros.values_mut() {
if let MacroId::ProcMacroId(_) = mac {
// FIXME: Technically this is insufficient since reexports of proc macros are also
// forbidden. Practically nobody does that.
for (mac, vis, import) in self.macros.values_mut() {
if matches!(mac, MacroId::ProcMacroId(_) if import.is_none()) {
continue;
}
@ -415,10 +463,17 @@ impl ItemScope {
attr_macros,
derive_macros,
extern_crate_decls,
use_decls,
use_imports_values,
use_imports_types,
use_imports_macros,
} = self;
types.shrink_to_fit();
values.shrink_to_fit();
macros.shrink_to_fit();
use_imports_types.shrink_to_fit();
use_imports_values.shrink_to_fit();
use_imports_macros.shrink_to_fit();
unresolved.shrink_to_fit();
declarations.shrink_to_fit();
impls.shrink_to_fit();
@ -428,6 +483,7 @@ impl ItemScope {
attr_macros.shrink_to_fit();
derive_macros.shrink_to_fit();
extern_crate_decls.shrink_to_fit();
use_decls.shrink_to_fit();
}
}

21
crates/hir-def/src/lib.rs
View file

@ -865,6 +865,7 @@ impl_from!(
ConstId,
FunctionId,
TraitId,
TraitAliasId,
TypeAliasId,
MacroId(Macro2Id, MacroRulesId, ProcMacroId),
ImplId,
@ -873,6 +874,26 @@ impl_from!(
for AttrDefId
);
impl TryFrom<ModuleDefId> for AttrDefId {
type Error = ();
fn try_from(value: ModuleDefId) -> Result<Self, Self::Error> {
match value {
ModuleDefId::ModuleId(it) => Ok(it.into()),
ModuleDefId::FunctionId(it) => Ok(it.into()),
ModuleDefId::AdtId(it) => Ok(it.into()),
ModuleDefId::EnumVariantId(it) => Ok(it.into()),
ModuleDefId::ConstId(it) => Ok(it.into()),
ModuleDefId::StaticId(it) => Ok(it.into()),
ModuleDefId::TraitId(it) => Ok(it.into()),
ModuleDefId::TypeAliasId(it) => Ok(it.into()),
ModuleDefId::TraitAliasId(id) => Ok(id.into()),
ModuleDefId::MacroId(id) => Ok(id.into()),
ModuleDefId::BuiltinType(_) => Err(()),
}
}
}
impl From<ItemContainerId> for AttrDefId {
fn from(acid: ItemContainerId) -> Self {
match acid {

1
crates/hir-def/src/nameres.rs
View file

@ -108,6 +108,7 @@ pub struct DefMap {
prelude: Option<(ModuleId, Option<UseId>)>,
/// `macro_use` prelude that contains macros from `#[macro_use]`'d external crates. Note that
/// this contains all kinds of macro, not just `macro_rules!` macro.
/// ExternCrateId being None implies it being imported from the general prelude import.
macro_use_prelude: FxHashMap<Name, (MacroId, Option<ExternCrateId>)>,
/// Tracks which custom derives are in scope for an item, to allow resolution of derive helper

7
crates/hir-def/src/nameres/collector.rs
View file

@ -33,7 +33,7 @@ use crate::{
attr_macro_as_call_id,
db::DefDatabase,
derive_macro_as_call_id,
item_scope::{ImportType, PerNsGlobImports},
item_scope::{ImportOrExternCrate, ImportType, PerNsGlobImports},
item_tree::{
self, ExternCrate, Fields, FileItemTreeId, ImportKind, ItemTree, ItemTreeId, ItemTreeNode,
MacroCall, MacroDef, MacroRules, Mod, ModItem, ModKind, TreeId,
@ -546,8 +546,8 @@ impl DefCollector<'_> {
self.def_map.resolve_path(self.db, DefMap::ROOT, &path, BuiltinShadowMode::Other, None);
match per_ns.types {
Some((ModuleDefId::ModuleId(m), _)) => {
self.def_map.prelude = Some((m, None));
Some((ModuleDefId::ModuleId(m), _, import)) => {
self.def_map.prelude = Some((m, import.and_then(ImportOrExternCrate::into_glob)));
}
types => {
tracing::debug!(
@ -714,7 +714,6 @@ impl DefCollector<'_> {
&mut self,
krate: CrateId,
names: Option<Vec<Name>>,
extern_crate: Option<ExternCrateId>,
) {
let def_map = self.db.crate_def_map(krate);

2
crates/hir-def/src/nameres/path_resolution.rs
View file

@ -65,7 +65,7 @@ impl PerNs {
db: &dyn DefDatabase,
expected: Option<MacroSubNs>,
) -> Self {
self.macros = self.macros.filter(|&(id, _)| {
self.macros = self.macros.filter(|&(id, _, _)| {
let this = MacroSubNs::from_id(db, id);
sub_namespace_match(Some(this), expected)
});

2
crates/hir-def/src/nameres/tests/incremental.rs
View file

@ -212,7 +212,7 @@ pub type Ty = ();
}
for (_, res) in module_data.scope.resolutions() {
match res.values.or(res.types).unwrap().0 {
match res.values.map(|(a, _, _)| a).or(res.types.map(|(a, _, _)| a)).unwrap() {
ModuleDefId::FunctionId(f) => _ = db.function_data(f),
ModuleDefId::AdtId(adt) => match adt {
AdtId::StructId(it) => _ = db.struct_data(it),

34
crates/hir-def/src/per_ns.rs
View file

@ -3,13 +3,17 @@
//!
//! `PerNs` (per namespace) captures this.
use crate::{item_scope::ItemInNs, visibility::Visibility, MacroId, ModuleDefId};
use crate::{
item_scope::{ImportId, ImportOrExternCrate, ItemInNs},
visibility::Visibility,
MacroId, ModuleDefId,
};
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub struct PerNs {
pub types: Option<(ModuleDefId, Visibility)>,
pub values: Option<(ModuleDefId, Visibility)>,
pub macros: Option<(MacroId, Visibility)>,
pub types: Option<(ModuleDefId, Visibility, Option<ImportOrExternCrate>)>,
pub values: Option<(ModuleDefId, Visibility, Option<ImportId>)>,
pub macros: Option<(MacroId, Visibility, Option<ImportId>)>,
}
impl Default for PerNs {
@ -24,19 +28,19 @@ impl PerNs {
}
pub fn values(t: ModuleDefId, v: Visibility) -> PerNs {
PerNs { types: None, values: Some((t, v)), macros: None }
PerNs { types: None, values: Some((t, v, None)), macros: None }
}
pub fn types(t: ModuleDefId, v: Visibility) -> PerNs {
PerNs { types: Some((t, v)), values: None, macros: None }
PerNs { types: Some((t, v, None)), values: None, macros: None }
}
pub fn both(types: ModuleDefId, values: ModuleDefId, v: Visibility) -> PerNs {
PerNs { types: Some((types, v)), values: Some((values, v)), macros: None }
PerNs { types: Some((types, v, None)), values: Some((values, v, None)), macros: None }
}
pub fn macros(macro_: MacroId, v: Visibility) -> PerNs {
PerNs { types: None, values: None, macros: Some((macro_, v)) }
PerNs { types: None, values: None, macros: Some((macro_, v, None)) }
}
pub fn is_none(&self) -> bool {
@ -52,7 +56,7 @@ impl PerNs {
}
pub fn take_types_vis(self) -> Option<(ModuleDefId, Visibility)> {
self.types
self.types.map(|(a, b, _)| (a, b))
}
pub fn take_values(self) -> Option<ModuleDefId> {
@ -66,17 +70,17 @@ impl PerNs {
pub fn filter_visibility(self, mut f: impl FnMut(Visibility) -> bool) -> PerNs {
let _p = profile::span("PerNs::filter_visibility");
PerNs {
types: self.types.filter(|(_, v)| f(*v)),
values: self.values.filter(|(_, v)| f(*v)),
macros: self.macros.filter(|(_, v)| f(*v)),
types: self.types.filter(|&(_, v, _)| f(v)),
values: self.values.filter(|&(_, v, _)| f(v)),
macros: self.macros.filter(|&(_, v, _)| f(v)),
}
}
pub fn with_visibility(self, vis: Visibility) -> PerNs {
PerNs {
types: self.types.map(|(it, _)| (it, vis)),
values: self.values.map(|(it, _)| (it, vis)),
macros: self.macros.map(|(it, _)| (it, vis)),
types: self.types.map(|(it, _, c)| (it, vis, c)),
values: self.values.map(|(it, _, c)| (it, vis, c)),
macros: self.macros.map(|(it, _, import)| (it, vis, import)),
}
}

6
crates/hir-def/src/resolver.rs
View file

@ -864,13 +864,13 @@ impl ScopeNames {
}
}
fn add_per_ns(&mut self, name: &Name, def: PerNs) {
if let &Some((ty, _)) = &def.types {
if let &Some((ty, _, _)) = &def.types {
self.add(name, ScopeDef::ModuleDef(ty))
}
if let &Some((def, _)) = &def.values {
if let &Some((def, _, _)) = &def.values {
self.add(name, ScopeDef::ModuleDef(def))
}
if let &Some((mac, _)) = &def.macros {
if let &Some((mac, _, _)) = &def.macros {
self.add(name, ScopeDef::ModuleDef(ModuleDefId::MacroId(mac)))
}
if def.is_none() {

3
crates/ide-db/src/lib.rs
View file

@ -94,18 +94,21 @@ impl fmt::Debug for RootDatabase {
}
impl Upcast<dyn ExpandDatabase> for RootDatabase {
#[inline]
fn upcast(&self) -> &(dyn ExpandDatabase + 'static) {
&*self
}
}
impl Upcast<dyn DefDatabase> for RootDatabase {
#[inline]
fn upcast(&self) -> &(dyn DefDatabase + 'static) {
&*self
}
}
impl Upcast<dyn HirDatabase> for RootDatabase {
#[inline]
fn upcast(&self) -> &(dyn HirDatabase + 'static) {
&*self
}