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Auto merge of #15181 - lowr:patch/import-map-purge-unused, r=Veykril

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Clean up `ImportMap`

There are several things in `hir_def::import_map` that are never used. This PR removes them and restructures the code. Namely:

- Removes `Query::name_only`, because it's *always* true.
  - Because of this, we never took advantage of storing items' full path. This PR removes `ImportPath` and changes `ImportInfo` to only store items' name, which should reduce the memory consumption to some extent.
- Removes `SearchMode::Contains` for `Query` because it's never used.
- Merges `Query::assoc_items_only` and `Query::exclude_import_kinds` into `Query::assoc_mode`, because the latter is never used besides filtering associated items out.

Best reviewed one commit at a time. I made sure each commit passes full test suite. I can squash the first three commits if needed.
This commit is contained in:
bors 2023-07-03 14:37:55 +00:00
commit 691600a885
6 changed files with 259 additions and 460 deletions
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2
crates/hir-def/src/find_path.rs
View File

@ -360,7 +360,7 @@ fn calculate_best_path(
prefer_no_std,
)?;
cov_mark::hit!(partially_imported);
path.push_segment(info.path.segments.last()?.clone());
path.push_segment(info.name.clone());
Some(path)
})
});

645
crates/hir-def/src/import_map.rs
View File

@ -1,13 +1,14 @@
//! A map of all publicly exported items in a crate.
use std::collections::hash_map::Entry;
use std::{fmt, hash::BuildHasherDefault};
use base_db::CrateId;
use fst::{self, Streamer};
use hir_expand::name::Name;
use indexmap::{map::Entry, IndexMap};
use indexmap::IndexMap;
use itertools::Itertools;
use rustc_hash::{FxHashSet, FxHasher};
use rustc_hash::{FxHashMap, FxHashSet, FxHasher};
use triomphe::Arc;
use crate::{
@ -17,52 +18,23 @@ use crate::{
type FxIndexMap<K, V> = IndexMap<K, V, BuildHasherDefault<FxHasher>>;
// FIXME: Support aliases: an item may be exported under multiple names, so `ImportInfo` should
// have `Vec<(Name, ModuleId)>` instead of `(Name, ModuleId)`.
/// Item import details stored in the `ImportMap`.
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct ImportInfo {
/// A path that can be used to import the item, relative to the crate's root.
pub path: ImportPath,
/// A name that can be used to import the item, relative to the crate's root.
pub name: Name,
/// The module containing this item.
pub container: ModuleId,
/// Whether the import is a trait associated item or not.
pub is_trait_assoc_item: bool,
}
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct ImportPath {
pub segments: Vec<Name>,
}
impl ImportPath {
pub fn display<'a>(&'a self, db: &'a dyn DefDatabase) -> impl fmt::Display + 'a {
struct Display<'a> {
db: &'a dyn DefDatabase,
path: &'a ImportPath,
}
impl fmt::Display for Display<'_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(
&self.path.segments.iter().map(|it| it.display(self.db.upcast())).format("::"),
f,
)
}
}
Display { db, path: self }
}
fn len(&self) -> usize {
self.segments.len()
}
}
/// A map from publicly exported items to the path needed to import/name them from a downstream
/// crate.
/// A map from publicly exported items to its name.
///
/// Reexports of items are taken into account, ie. if something is exported under multiple
/// names, the one with the shortest import path will be used.
///
/// Note that all paths are relative to the containing crate's root, so the crate name still needs
/// to be prepended to the `ModPath` before the path is valid.
#[derive(Default)]
pub struct ImportMap {
map: FxIndexMap<ItemInNs, ImportInfo>,
@ -70,122 +42,58 @@ pub struct ImportMap {
/// List of keys stored in `map`, sorted lexicographically by their `ModPath`. Indexed by the
/// values returned by running `fst`.
///
/// Since a path can refer to multiple items due to namespacing, we store all items with the
/// same path right after each other. This allows us to find all items after the FST gives us
/// Since a name can refer to multiple items due to namespacing, we store all items with the
/// same name right after each other. This allows us to find all items after the FST gives us
/// the index of the first one.
importables: Vec<ItemInNs>,
fst: fst::Map<Vec<u8>>,
}
impl ImportMap {
pub fn import_map_query(db: &dyn DefDatabase, krate: CrateId) -> Arc<Self> {
pub(crate) fn import_map_query(db: &dyn DefDatabase, krate: CrateId) -> Arc<Self> {
let _p = profile::span("import_map_query");
let mut import_map = collect_import_map(db, krate);
let map = collect_import_map(db, krate);
let mut importables = import_map
.map
let mut importables: Vec<_> = map
.iter()
.map(|(item, info)| (item, fst_path(db, &info.path)))
.collect::<Vec<_>>();
importables.sort_by(|(_, fst_path), (_, fst_path2)| fst_path.cmp(fst_path2));
// We've only collected items, whose name cannot be tuple field.
.map(|(&item, info)| (item, info.name.as_str().unwrap().to_ascii_lowercase()))
.collect();
importables.sort_by(|(_, lhs_name), (_, rhs_name)| lhs_name.cmp(rhs_name));
// Build the FST, taking care not to insert duplicate values.
let mut builder = fst::MapBuilder::memory();
let mut last_batch_start = 0;
for idx in 0..importables.len() {
let key = &importables[last_batch_start].1;
if let Some((_, fst_path)) = importables.get(idx + 1) {
if key == fst_path {
continue;
}
}
let _ = builder.insert(key, last_batch_start as u64);
last_batch_start = idx + 1;
let iter = importables.iter().enumerate().dedup_by(|lhs, rhs| lhs.1 .1 == rhs.1 .1);
for (start_idx, (_, name)) in iter {
let _ = builder.insert(name, start_idx as u64);
}
import_map.fst = builder.into_map();
import_map.importables = importables.iter().map(|&(&item, _)| item).collect();
Arc::new(import_map)
}
/// Returns the `ModPath` needed to import/mention `item`, relative to this crate's root.
pub fn path_of(&self, item: ItemInNs) -> Option<&ImportPath> {
self.import_info_for(item).map(|it| &it.path)
Arc::new(ImportMap {
map,
fst: builder.into_map(),
importables: importables.into_iter().map(|(item, _)| item).collect(),
})
}
pub fn import_info_for(&self, item: ItemInNs) -> Option<&ImportInfo> {
self.map.get(&item)
}
#[cfg(test)]
fn fmt_for_test(&self, db: &dyn DefDatabase) -> String {
let mut importable_paths: Vec<_> = self
.map
.iter()
.map(|(item, info)| {
let ns = match item {
ItemInNs::Types(_) => "t",
ItemInNs::Values(_) => "v",
ItemInNs::Macros(_) => "m",
};
format!("- {} ({ns})", info.path.display(db))
})
.collect();
importable_paths.sort();
importable_paths.join("\n")
}
fn collect_trait_assoc_items(
&mut self,
db: &dyn DefDatabase,
tr: TraitId,
is_type_in_ns: bool,
original_import_info: &ImportInfo,
) {
let _p = profile::span("collect_trait_assoc_items");
for (assoc_item_name, item) in &db.trait_data(tr).items {
let module_def_id = match item {
AssocItemId::FunctionId(f) => ModuleDefId::from(*f),
AssocItemId::ConstId(c) => ModuleDefId::from(*c),
// cannot use associated type aliases directly: need a `<Struct as Trait>::TypeAlias`
// qualifier, ergo no need to store it for imports in import_map
AssocItemId::TypeAliasId(_) => {
cov_mark::hit!(type_aliases_ignored);
continue;
}
};
let assoc_item = if is_type_in_ns {
ItemInNs::Types(module_def_id)
} else {
ItemInNs::Values(module_def_id)
};
let mut assoc_item_info = original_import_info.clone();
assoc_item_info.path.segments.push(assoc_item_name.to_owned());
assoc_item_info.is_trait_assoc_item = true;
self.map.insert(assoc_item, assoc_item_info);
}
}
}
fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> ImportMap {
fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> FxIndexMap<ItemInNs, ImportInfo> {
let _p = profile::span("collect_import_map");
let def_map = db.crate_def_map(krate);
let mut import_map = ImportMap::default();
let mut map = FxIndexMap::default();
// We look only into modules that are public(ly reexported), starting with the crate root.
let empty = ImportPath { segments: vec![] };
let root = def_map.module_id(DefMap::ROOT);
let mut worklist = vec![(root, empty)];
while let Some((module, mod_path)) = worklist.pop() {
let mut worklist = vec![(root, 0)];
// Records items' minimum module depth.
let mut depth_map = FxHashMap::default();
while let Some((module, depth)) = worklist.pop() {
let ext_def_map;
let mod_data = if module.krate == krate {
&def_map[module.local_id]
@ -205,52 +113,83 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> ImportMap {
});
for (name, per_ns) in visible_items {
let mk_path = || {
let mut path = mod_path.clone();
path.segments.push(name.clone());
path
};
for item in per_ns.iter_items() {
let path = mk_path();
let path_len = path.len();
let import_info =
ImportInfo { path, container: module, is_trait_assoc_item: false };
let import_info = ImportInfo {
name: name.clone(),
container: module,
is_trait_assoc_item: false,
};
if let Some(ModuleDefId::TraitId(tr)) = item.as_module_def_id() {
import_map.collect_trait_assoc_items(
db,
tr,
matches!(item, ItemInNs::Types(_)),
&import_info,
);
}
match import_map.map.entry(item) {
match depth_map.entry(item) {
Entry::Vacant(entry) => {
entry.insert(import_info);
entry.insert(depth);
}
Entry::Occupied(mut entry) => {
// If the new path is shorter, prefer that one.
if path_len < entry.get().path.len() {
*entry.get_mut() = import_info;
if depth < *entry.get() {
entry.insert(depth);
} else {
continue;
}
}
}
// If we've just added a path to a module, descend into it. We might traverse
// modules multiple times, but only if the new path to it is shorter than the
// first (else we `continue` above).
if let Some(ModuleDefId::TraitId(tr)) = item.as_module_def_id() {
collect_trait_assoc_items(
db,
&mut map,
tr,
matches!(item, ItemInNs::Types(_)),
&import_info,
);
}
map.insert(item, import_info);
// If we've just added a module, descend into it. We might traverse modules
// multiple times, but only if the module depth is smaller (else we `continue`
// above).
if let Some(ModuleDefId::ModuleId(mod_id)) = item.as_module_def_id() {
worklist.push((mod_id, mk_path()));
worklist.push((mod_id, depth + 1));
}
}
}
}
import_map
map
}
fn collect_trait_assoc_items(
db: &dyn DefDatabase,
map: &mut FxIndexMap<ItemInNs, ImportInfo>,
tr: TraitId,
is_type_in_ns: bool,
trait_import_info: &ImportInfo,
) {
let _p = profile::span("collect_trait_assoc_items");
for (assoc_item_name, item) in &db.trait_data(tr).items {
let module_def_id = match item {
AssocItemId::FunctionId(f) => ModuleDefId::from(*f),
AssocItemId::ConstId(c) => ModuleDefId::from(*c),
// cannot use associated type aliases directly: need a `<Struct as Trait>::TypeAlias`
// qualifier, ergo no need to store it for imports in import_map
AssocItemId::TypeAliasId(_) => {
cov_mark::hit!(type_aliases_ignored);
continue;
}
};
let assoc_item = if is_type_in_ns {
ItemInNs::Types(module_def_id)
} else {
ItemInNs::Values(module_def_id)
};
let assoc_item_info = ImportInfo {
container: trait_import_info.container,
name: assoc_item_name.clone(),
is_trait_assoc_item: true,
};
map.insert(assoc_item, assoc_item_info);
}
}
impl PartialEq for ImportMap {
@ -264,7 +203,7 @@ impl Eq for ImportMap {}
impl fmt::Debug for ImportMap {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut importable_paths: Vec<_> = self
let mut importable_names: Vec<_> = self
.map
.iter()
.map(|(item, _)| match item {
@ -274,56 +213,40 @@ impl fmt::Debug for ImportMap {
})
.collect();
importable_paths.sort();
f.write_str(&importable_paths.join("\n"))
importable_names.sort();
f.write_str(&importable_names.join("\n"))
}
}
fn fst_path(db: &dyn DefDatabase, path: &ImportPath) -> String {
let _p = profile::span("fst_path");
let mut s = path.display(db).to_string();
s.make_ascii_lowercase();
s
}
#[derive(Debug, Eq, PartialEq, Hash)]
pub enum ImportKind {
Module,
Function,
Adt,
EnumVariant,
Const,
Static,
Trait,
TraitAlias,
TypeAlias,
BuiltinType,
AssociatedItem,
Macro,
}
/// A way to match import map contents against the search query.
#[derive(Debug)]
pub enum SearchMode {
enum SearchMode {
/// Import map entry should strictly match the query string.
Equals,
/// Import map entry should contain the query string.
Contains,
Exact,
/// Import map entry should contain all letters from the query string,
/// in the same order, but not necessary adjacent.
Fuzzy,
}
/// Three possible ways to search for the name in associated and/or other items.
#[derive(Debug, Clone, Copy)]
pub enum AssocSearchMode {
/// Search for the name in both associated and other items.
Include,
/// Search for the name in other items only.
Exclude,
/// Search for the name in the associated items only.
AssocItemsOnly,
}
#[derive(Debug)]
pub struct Query {
query: String,
lowercased: String,
name_only: bool,
assoc_items_only: bool,
search_mode: SearchMode,
assoc_mode: AssocSearchMode,
case_sensitive: bool,
limit: usize,
exclude_import_kinds: FxHashSet<ImportKind>,
}
impl Query {
@ -332,30 +255,21 @@ impl Query {
Self {
query,
lowercased,
name_only: false,
assoc_items_only: false,
search_mode: SearchMode::Contains,
search_mode: SearchMode::Exact,
assoc_mode: AssocSearchMode::Include,
case_sensitive: false,
limit: usize::max_value(),
exclude_import_kinds: FxHashSet::default(),
limit: usize::MAX,
}
}
/// Matches entries' names only, ignoring the rest of
/// the qualifier.
/// Example: for `std::marker::PhantomData`, the name is `PhantomData`.
pub fn name_only(self) -> Self {
Self { name_only: true, ..self }
/// Fuzzy finds items instead of exact matching.
pub fn fuzzy(self) -> Self {
Self { search_mode: SearchMode::Fuzzy, ..self }
}
/// Matches only the entries that are associated items, ignoring the rest.
pub fn assoc_items_only(self) -> Self {
Self { assoc_items_only: true, ..self }
}
/// Specifies the way to search for the entries using the query.
pub fn search_mode(self, search_mode: SearchMode) -> Self {
Self { search_mode, ..self }
/// Specifies whether we want to include associated items in the result.
pub fn assoc_search_mode(self, assoc_mode: AssocSearchMode) -> Self {
Self { assoc_mode, ..self }
}
/// Limits the returned number of items to `limit`.
@ -368,12 +282,6 @@ impl Query {
Self { case_sensitive: true, ..self }
}
/// Do not include imports of the specified kind in the search results.
pub fn exclude_import_kind(mut self, import_kind: ImportKind) -> Self {
self.exclude_import_kinds.insert(import_kind);
self
}
fn import_matches(
&self,
db: &dyn DefDatabase,
@ -381,49 +289,36 @@ impl Query {
enforce_lowercase: bool,
) -> bool {
let _p = profile::span("import_map::Query::import_matches");
if import.is_trait_assoc_item {
if self.exclude_import_kinds.contains(&ImportKind::AssociatedItem) {
return false;
}
} else if self.assoc_items_only {
return false;
match (import.is_trait_assoc_item, self.assoc_mode) {
(true, AssocSearchMode::Exclude) => return false,
(false, AssocSearchMode::AssocItemsOnly) => return false,
_ => {}
}
let mut input = if import.is_trait_assoc_item || self.name_only {
import.path.segments.last().unwrap().display(db.upcast()).to_string()
} else {
import.path.display(db).to_string()
};
if enforce_lowercase || !self.case_sensitive {
let mut input = import.name.display(db.upcast()).to_string();
let case_insensitive = enforce_lowercase || !self.case_sensitive;
if case_insensitive {
input.make_ascii_lowercase();
}
let query_string =
if !enforce_lowercase && self.case_sensitive { &self.query } else { &self.lowercased };
let query_string = if case_insensitive { &self.lowercased } else { &self.query };
match self.search_mode {
SearchMode::Equals => &input == query_string,
SearchMode::Contains => input.contains(query_string),
SearchMode::Exact => &input == query_string,
SearchMode::Fuzzy => {
let mut unchecked_query_chars = query_string.chars();
let mut mismatching_query_char = unchecked_query_chars.next();
for input_char in input.chars() {
match mismatching_query_char {
None => return true,
Some(matching_query_char) if matching_query_char == input_char => {
mismatching_query_char = unchecked_query_chars.next();
}
_ => (),
let mut input_chars = input.chars();
for query_char in query_string.chars() {
if input_chars.find(|&it| it == query_char).is_none() {
return false;
}
}
mismatching_query_char.is_none()
true
}
}
}
}
/// Searches dependencies of `krate` for an importable path matching `query`.
/// Searches dependencies of `krate` for an importable name matching `query`.
///
/// This returns a list of items that could be imported from dependencies of `krate`.
pub fn search_dependencies(
@ -446,65 +341,44 @@ pub fn search_dependencies(
let mut stream = op.union();
let mut all_indexed_values = FxHashSet::default();
while let Some((_, indexed_values)) = stream.next() {
all_indexed_values.extend(indexed_values.iter().copied());
}
let mut res = FxHashSet::default();
for indexed_value in all_indexed_values {
let import_map = &import_maps[indexed_value.index];
let importables = &import_map.importables[indexed_value.value as usize..];
while let Some((_, indexed_values)) = stream.next() {
for indexed_value in indexed_values {
let import_map = &import_maps[indexed_value.index];
let importables = &import_map.importables[indexed_value.value as usize..];
let common_importable_data = &import_map.map[&importables[0]];
if !query.import_matches(db, common_importable_data, true) {
continue;
}
let common_importable_data = &import_map.map[&importables[0]];
if !query.import_matches(db, common_importable_data, true) {
continue;
}
// Path shared by the importable items in this group.
let common_importables_path_fst = fst_path(db, &common_importable_data.path);
// Add the items from this `ModPath` group. Those are all subsequent items in
// `importables` whose paths match `path`.
let iter = importables
.iter()
.copied()
.take_while(|item| {
common_importables_path_fst == fst_path(db, &import_map.map[item].path)
})
.filter(|&item| match item_import_kind(item) {
Some(import_kind) => !query.exclude_import_kinds.contains(&import_kind),
None => true,
})
.filter(|item| {
!query.case_sensitive // we've already checked the common importables path case-insensitively
// Name shared by the importable items in this group.
let common_importable_name =
common_importable_data.name.to_smol_str().to_ascii_lowercase();
// Add the items from this name group. Those are all subsequent items in
// `importables` whose name match `common_importable_name`.
let iter = importables
.iter()
.copied()
.take_while(|item| {
common_importable_name
== import_map.map[item].name.to_smol_str().to_ascii_lowercase()
})
.filter(|item| {
!query.case_sensitive // we've already checked the common importables name case-insensitively
|| query.import_matches(db, &import_map.map[item], false)
});
res.extend(iter);
});
res.extend(iter);
if res.len() >= query.limit {
return res;
if res.len() >= query.limit {
return res;
}
}
}
res
}
fn item_import_kind(item: ItemInNs) -> Option<ImportKind> {
Some(match item.as_module_def_id()? {
ModuleDefId::ModuleId(_) => ImportKind::Module,
ModuleDefId::FunctionId(_) => ImportKind::Function,
ModuleDefId::AdtId(_) => ImportKind::Adt,
ModuleDefId::EnumVariantId(_) => ImportKind::EnumVariant,
ModuleDefId::ConstId(_) => ImportKind::Const,
ModuleDefId::StaticId(_) => ImportKind::Static,
ModuleDefId::TraitId(_) => ImportKind::Trait,
ModuleDefId::TraitAliasId(_) => ImportKind::TraitAlias,
ModuleDefId::TypeAliasId(_) => ImportKind::TypeAlias,
ModuleDefId::BuiltinType(_) => ImportKind::BuiltinType,
ModuleDefId::MacroId(_) => ImportKind::Macro,
})
}
#[cfg(test)]
mod tests {
use base_db::{fixture::WithFixture, SourceDatabase, Upcast};
@ -514,16 +388,39 @@ mod tests {
use super::*;
impl ImportMap {
fn fmt_for_test(&self, db: &dyn DefDatabase) -> String {
let mut importable_paths: Vec<_> = self
.map
.iter()
.map(|(item, info)| {
let path = render_path(db, info);
let ns = match item {
ItemInNs::Types(_) => "t",
ItemInNs::Values(_) => "v",
ItemInNs::Macros(_) => "m",
};
format!("- {path} ({ns})")
})
.collect();
importable_paths.sort();
importable_paths.join("\n")
}
}
fn check_search(ra_fixture: &str, crate_name: &str, query: Query, expect: Expect) {
let db = TestDB::with_files(ra_fixture);
let crate_graph = db.crate_graph();
let krate = crate_graph
.iter()
.find(|krate| {
crate_graph[*krate].display_name.as_ref().map(|n| n.to_string())
== Some(crate_name.to_string())
.find(|&krate| {
crate_graph[krate]
.display_name
.as_ref()
.is_some_and(|it| &**it.crate_name() == crate_name)
})
.unwrap();
.expect("could not find crate");
let actual = search_dependencies(db.upcast(), krate, query)
.into_iter()
@ -534,7 +431,7 @@ mod tests {
let (path, mark) = match assoc_item_path(&db, &dependency_imports, dependency) {
Some(assoc_item_path) => (assoc_item_path, "a"),
None => (
dependency_imports.path_of(dependency)?.display(&db).to_string(),
render_path(&db, dependency_imports.import_info_for(dependency)?),
match dependency {
ItemInNs::Types(ModuleDefId::FunctionId(_))
| ItemInNs::Values(ModuleDefId::FunctionId(_)) => "f",
@ -564,57 +461,25 @@ mod tests {
dependency_imports: &ImportMap,
dependency: ItemInNs,
) -> Option<String> {
let dependency_assoc_item_id = match dependency {
ItemInNs::Types(ModuleDefId::FunctionId(id))
| ItemInNs::Values(ModuleDefId::FunctionId(id)) => AssocItemId::from(id),
ItemInNs::Types(ModuleDefId::ConstId(id))
| ItemInNs::Values(ModuleDefId::ConstId(id)) => AssocItemId::from(id),
ItemInNs::Types(ModuleDefId::TypeAliasId(id))
| ItemInNs::Values(ModuleDefId::TypeAliasId(id)) => AssocItemId::from(id),
let (dependency_assoc_item_id, container) = match dependency.as_module_def_id()? {
ModuleDefId::FunctionId(id) => (AssocItemId::from(id), id.lookup(db).container),
ModuleDefId::ConstId(id) => (AssocItemId::from(id), id.lookup(db).container),
ModuleDefId::TypeAliasId(id) => (AssocItemId::from(id), id.lookup(db).container),
_ => return None,
};
let trait_ = assoc_to_trait(db, dependency)?;
if let ModuleDefId::TraitId(tr) = trait_.as_module_def_id()? {
let trait_data = db.trait_data(tr);
let assoc_item_name =
trait_data.items.iter().find_map(|(assoc_item_name, assoc_item_id)| {
if &dependency_assoc_item_id == assoc_item_id {
Some(assoc_item_name)
} else {
None
}
})?;
return Some(format!(
"{}::{}",
dependency_imports.path_of(trait_)?.display(db),
assoc_item_name.display(db.upcast())
));
}
None
}
fn assoc_to_trait(db: &dyn DefDatabase, item: ItemInNs) -> Option<ItemInNs> {
let assoc: AssocItemId = match item {
ItemInNs::Types(it) | ItemInNs::Values(it) => match it {
ModuleDefId::TypeAliasId(it) => it.into(),
ModuleDefId::FunctionId(it) => it.into(),
ModuleDefId::ConstId(it) => it.into(),
_ => return None,
},
_ => return None,
let ItemContainerId::TraitId(trait_id) = container else {
return None;
};
let container = match assoc {
AssocItemId::FunctionId(it) => it.lookup(db).container,
AssocItemId::ConstId(it) => it.lookup(db).container,
AssocItemId::TypeAliasId(it) => it.lookup(db).container,
};
let trait_info = dependency_imports.import_info_for(ItemInNs::Types(trait_id.into()))?;
match container {
ItemContainerId::TraitId(it) => Some(ItemInNs::Types(it.into())),
_ => None,
}
let trait_data = db.trait_data(trait_id);
let (assoc_item_name, _) = trait_data
.items
.iter()
.find(|(_, assoc_item_id)| &dependency_assoc_item_id == assoc_item_id)?;
Some(format!("{}::{}", render_path(db, trait_info), assoc_item_name.display(db.upcast())))
}
fn check(ra_fixture: &str, expect: Expect) {
@ -637,6 +502,24 @@ mod tests {
expect.assert_eq(&actual)
}
fn render_path(db: &dyn DefDatabase, info: &ImportInfo) -> String {
let mut module = info.container;
let mut segments = vec![&info.name];
let def_map = module.def_map(db);
assert!(def_map.block_id().is_none(), "block local items should not be in `ImportMap`");
while let Some(parent) = module.containing_module(db) {
let parent_data = &def_map[parent.local_id];
let (name, _) =
parent_data.children.iter().find(|(_, id)| **id == module.local_id).unwrap();
segments.push(name);
module = parent;
}
segments.iter().rev().map(|it| it.display(db.upcast())).join("::")
}
#[test]
fn smoke() {
check(
@ -753,6 +636,7 @@ mod tests {
#[test]
fn module_reexport() {
// Reexporting modules from a dependency adds all contents to the import map.
// XXX: The rendered paths are relative to the defining crate.
check(
r"
//- /main.rs crate:main deps:lib
@ -768,9 +652,9 @@ mod tests {
- module::S (t)
- module::S (v)
main:
- module::S (t)
- module::S (v)
- reexported_module (t)
- reexported_module::S (t)
- reexported_module::S (v)
"#]],
);
}
@ -872,10 +756,9 @@ mod tests {
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string()).search_mode(SearchMode::Fuzzy),
Query::new("fmt".to_string()).fuzzy(),
expect![[r#"
dep::fmt (t)
dep::fmt::Display (t)
dep::fmt::Display::FMT_CONST (a)
dep::fmt::Display::format_function (a)
dep::fmt::Display::format_method (a)
@ -902,7 +785,9 @@ mod tests {
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string()).search_mode(SearchMode::Fuzzy).assoc_items_only(),
Query::new("fmt".to_string())
.fuzzy()
.assoc_search_mode(AssocSearchMode::AssocItemsOnly),
expect![[r#"
dep::fmt::Display::FMT_CONST (a)
dep::fmt::Display::format_function (a)
@ -913,23 +798,10 @@ mod tests {
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string())
.search_mode(SearchMode::Fuzzy)
.exclude_import_kind(ImportKind::AssociatedItem),
Query::new("fmt".to_string()).fuzzy().assoc_search_mode(AssocSearchMode::Exclude),
expect![[r#"
dep::fmt (t)
dep::fmt::Display (t)
"#]],
);
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string())
.search_mode(SearchMode::Fuzzy)
.assoc_items_only()
.exclude_import_kind(ImportKind::AssociatedItem),
expect![[r#""#]],
dep::fmt (t)
"#]],
);
}
@ -962,13 +834,12 @@ mod tests {
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string()).search_mode(SearchMode::Fuzzy),
Query::new("fmt".to_string()).fuzzy(),
expect![[r#"
dep::Fmt (m)
dep::Fmt (t)
dep::Fmt (v)
dep::fmt (t)
dep::fmt::Display (t)
dep::fmt::Display::fmt (a)
dep::format (f)
"#]],
@ -977,7 +848,7 @@ mod tests {
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string()).search_mode(SearchMode::Equals),
Query::new("fmt".to_string()),
expect![[r#"
dep::Fmt (m)
dep::Fmt (t)
@ -986,20 +857,6 @@ mod tests {
dep::fmt::Display::fmt (a)
"#]],
);
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string()).search_mode(SearchMode::Contains),
expect![[r#"
dep::Fmt (m)
dep::Fmt (t)
dep::Fmt (v)
dep::fmt (t)
dep::fmt::Display (t)
dep::fmt::Display::fmt (a)
"#]],
);
}
#[test]
@ -1037,7 +894,6 @@ mod tests {
dep::Fmt (t)
dep::Fmt (v)
dep::fmt (t)
dep::fmt::Display (t)
dep::fmt::Display::fmt (a)
"#]],
);
@ -1045,7 +901,7 @@ mod tests {
check_search(
ra_fixture,
"main",
Query::new("fmt".to_string()).name_only(),
Query::new("fmt".to_string()),
expect![[r#"
dep::Fmt (m)
dep::Fmt (t)
@ -1110,43 +966,10 @@ mod tests {
pub fn no() {}
"#,
"main",
Query::new("".to_string()).limit(2),
Query::new("".to_string()).fuzzy().limit(1),
expect![[r#"
dep::Fmt (m)
dep::Fmt (t)
dep::Fmt (v)
dep::fmt (t)
dep::fmt::Display (t)
"#]],
);
}
#[test]
fn search_exclusions() {
let ra_fixture = r#"
//- /main.rs crate:main deps:dep
//- /dep.rs crate:dep
pub struct fmt;
pub struct FMT;
"#;
check_search(
ra_fixture,
"main",
Query::new("FMT".to_string()),
expect![[r#"
dep::FMT (t)
dep::FMT (v)
dep::fmt (t)
dep::fmt (v)
"#]],
);
check_search(
ra_fixture,
"main",
Query::new("FMT".to_string()).exclude_import_kind(ImportKind::Adt),
expect![[r#""#]],
);
}
}

2
crates/ide-assists/src/handlers/replace_derive_with_manual_impl.rs
View File

@ -73,7 +73,7 @@ pub(crate) fn replace_derive_with_manual_impl(
&ctx.sema,
current_crate,
NameToImport::exact_case_sensitive(path.segments().last()?.to_string()),
items_locator::AssocItemSearch::Exclude,
items_locator::AssocSearchMode::Exclude,
Some(items_locator::DEFAULT_QUERY_SEARCH_LIMIT.inner()),
)
.filter_map(|item| match item.as_module_def()? {

2
crates/ide-completion/src/lib.rs
View File

@ -231,7 +231,7 @@ pub fn resolve_completion_edits(
&sema,
current_crate,
NameToImport::exact_case_sensitive(imported_name),
items_locator::AssocItemSearch::Include,
items_locator::AssocSearchMode::Include,
Some(items_locator::DEFAULT_QUERY_SEARCH_LIMIT.inner()),
);
let import = items_with_name

8
crates/ide-db/src/imports/import_assets.rs
View File

@ -13,7 +13,7 @@ use syntax::{
use crate::{
helpers::item_name,
items_locator::{self, AssocItemSearch, DEFAULT_QUERY_SEARCH_LIMIT},
items_locator::{self, AssocSearchMode, DEFAULT_QUERY_SEARCH_LIMIT},
RootDatabase,
};
@ -317,7 +317,7 @@ fn path_applicable_imports(
// * improve the associated completion item matching and/or scoring to ensure no noisy completions appear
//
// see also an ignored test under FIXME comment in the qualify_path.rs module
AssocItemSearch::Exclude,
AssocSearchMode::Exclude,
Some(DEFAULT_QUERY_SEARCH_LIMIT.inner()),
)
.filter_map(|item| {
@ -334,7 +334,7 @@ fn path_applicable_imports(
sema,
current_crate,
path_candidate.name.clone(),
AssocItemSearch::Include,
AssocSearchMode::Include,
Some(DEFAULT_QUERY_SEARCH_LIMIT.inner()),
)
.filter_map(|item| {
@ -483,7 +483,7 @@ fn trait_applicable_items(
sema,
current_crate,
trait_candidate.assoc_item_name.clone(),
AssocItemSearch::AssocItemsOnly,
AssocSearchMode::AssocItemsOnly,
Some(DEFAULT_QUERY_SEARCH_LIMIT.inner()),
)
.filter_map(|input| item_as_assoc(db, input))

60
crates/ide-db/src/items_locator.rs
View File

@ -3,10 +3,7 @@
//! The main reason for this module to exist is the fact that project's items and dependencies' items
//! are located in different caches, with different APIs.
use either::Either;
use hir::{
import_map::{self, ImportKind},
AsAssocItem, Crate, ItemInNs, Semantics,
};
use hir::{import_map, AsAssocItem, Crate, ItemInNs, Semantics};
use limit::Limit;
use crate::{imports::import_assets::NameToImport, symbol_index, RootDatabase};
@ -14,23 +11,14 @@ use crate::{imports::import_assets::NameToImport, symbol_index, RootDatabase};
/// A value to use, when uncertain which limit to pick.
pub static DEFAULT_QUERY_SEARCH_LIMIT: Limit = Limit::new(40);
/// Three possible ways to search for the name in associated and/or other items.
#[derive(Debug, Clone, Copy)]
pub enum AssocItemSearch {
/// Search for the name in both associated and other items.
Include,
/// Search for the name in other items only.
Exclude,
/// Search for the name in the associated items only.
AssocItemsOnly,
}
pub use import_map::AssocSearchMode;
/// Searches for importable items with the given name in the crate and its dependencies.
pub fn items_with_name<'a>(
sema: &'a Semantics<'_, RootDatabase>,
krate: Crate,
name: NameToImport,
assoc_item_search: AssocItemSearch,
assoc_item_search: AssocSearchMode,
limit: Option<usize>,
) -> impl Iterator<Item = ItemInNs> + 'a {
let _p = profile::span("items_with_name").detail(|| {
@ -48,9 +36,7 @@ pub fn items_with_name<'a>(
let mut local_query = symbol_index::Query::new(exact_name.clone());
local_query.exact();
let external_query = import_map::Query::new(exact_name)
.name_only()
.search_mode(import_map::SearchMode::Equals);
let external_query = import_map::Query::new(exact_name);
(
local_query,
@ -61,17 +47,8 @@ pub fn items_with_name<'a>(
let mut local_query = symbol_index::Query::new(fuzzy_search_string.clone());
let mut external_query = import_map::Query::new(fuzzy_search_string.clone())
.search_mode(import_map::SearchMode::Fuzzy)
.name_only();
match assoc_item_search {
AssocItemSearch::Include => {}
AssocItemSearch::Exclude => {
external_query = external_query.exclude_import_kind(ImportKind::AssociatedItem);
}
AssocItemSearch::AssocItemsOnly => {
external_query = external_query.assoc_items_only();
}
}
.fuzzy()
.assoc_search_mode(assoc_item_search);
if fuzzy_search_string.to_lowercase() != fuzzy_search_string {
local_query.case_sensitive();
@ -93,13 +70,15 @@ pub fn items_with_name<'a>(
fn find_items<'a>(
sema: &'a Semantics<'_, RootDatabase>,
krate: Crate,
assoc_item_search: AssocItemSearch,
assoc_item_search: AssocSearchMode,
local_query: symbol_index::Query,
external_query: import_map::Query,
) -> impl Iterator<Item = ItemInNs> + 'a {
let _p = profile::span("find_items");
let db = sema.db;
// NOTE: `external_query` includes `assoc_item_search`, so we don't need to
// filter on our own.
let external_importables =
krate.query_external_importables(db, external_query).map(|external_importable| {
match external_importable {
@ -112,18 +91,15 @@ fn find_items<'a>(
let local_results = local_query
.search(&symbol_index::crate_symbols(db, krate))
.into_iter()
.filter_map(|local_candidate| match local_candidate.def {
hir::ModuleDef::Macro(macro_def) => Some(ItemInNs::Macros(macro_def)),
def => Some(ItemInNs::from(def)),
.filter(move |candidate| match assoc_item_search {
AssocSearchMode::Include => true,
AssocSearchMode::Exclude => candidate.def.as_assoc_item(db).is_none(),
AssocSearchMode::AssocItemsOnly => candidate.def.as_assoc_item(db).is_some(),
})
.map(|local_candidate| match local_candidate.def {
hir::ModuleDef::Macro(macro_def) => ItemInNs::Macros(macro_def),
def => ItemInNs::from(def),
});
external_importables.chain(local_results).filter(move |&item| match assoc_item_search {
AssocItemSearch::Include => true,
AssocItemSearch::Exclude => !is_assoc_item(item, sema.db),
AssocItemSearch::AssocItemsOnly => is_assoc_item(item, sema.db),
})
}
fn is_assoc_item(item: ItemInNs, db: &RootDatabase) -> bool {
item.as_module_def().and_then(|module_def| module_def.as_assoc_item(db)).is_some()
external_importables.chain(local_results)
}