diff options
| -rw-r--r-- | crates/hir-def/src/import_map.rs | 149 |
1 files changed, 55 insertions, 94 deletions
diff --git a/crates/hir-def/src/import_map.rs b/crates/hir-def/src/import_map.rs index d3dee8e7c73..b857392f370 100644 --- a/crates/hir-def/src/import_map.rs +++ b/crates/hir-def/src/import_map.rs @@ -1,14 +1,14 @@ //! A map of all publicly exported items in a crate. -use std::{collections::hash_map::Entry, fmt, hash::BuildHasherDefault}; +use std::{fmt, hash::BuildHasherDefault}; use base_db::CrateId; use fst::{self, raw::IndexedValue, Streamer}; use hir_expand::name::Name; use indexmap::IndexMap; use itertools::Itertools; -use rustc_hash::{FxHashMap, FxHashSet, FxHasher}; -use smallvec::{smallvec, SmallVec}; +use rustc_hash::{FxHashSet, FxHasher}; +use smallvec::SmallVec; use triomphe::Arc; use crate::{ @@ -103,11 +103,13 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> ImportMapIndex { // We look only into modules that are public(ly reexported), starting with the crate root. let root = def_map.module_id(DefMap::ROOT); - let mut worklist = vec![(root, 0u32)]; - // Records items' minimum module depth. - let mut depth_map = FxHashMap::default(); + let mut worklist = vec![root]; + let mut visited = FxHashSet::default(); - while let Some((module, depth)) = worklist.pop() { + while let Some(module) = worklist.pop() { + if !visited.insert(module) { + continue; + } let ext_def_map; let mod_data = if module.krate == krate { &def_map[module.local_id] @@ -126,6 +128,7 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> ImportMapIndex { } }); + // FIXME: This loop might add the same entry up to 3 times per item! dedup for (name, per_ns) in visible_items { for (item, import) in per_ns.iter_items() { let attr_id = if let Some(import) = import { @@ -139,11 +142,10 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> ImportMapIndex { ItemInNs::Macros(id) => Some(id.into()), } }; - let status @ (is_doc_hidden, is_unstable) = - attr_id.map_or((false, false), |attr_id| { - let attrs = db.attrs(attr_id); - (attrs.has_doc_hidden(), attrs.is_unstable()) - }); + let (is_doc_hidden, is_unstable) = attr_id.map_or((false, false), |attr_id| { + let attrs = db.attrs(attr_id); + (attrs.has_doc_hidden(), attrs.is_unstable()) + }); let import_info = ImportInfo { name: name.clone(), @@ -152,50 +154,6 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> ImportMapIndex { is_unstable, }; - match depth_map.entry(item) { - Entry::Vacant(entry) => _ = entry.insert((depth, status)), - Entry::Occupied(mut entry) => { - let &(occ_depth, (occ_is_doc_hidden, occ_is_unstable)) = entry.get(); - (depth, occ_depth); - let overwrite = match ( - is_doc_hidden, - occ_is_doc_hidden, - is_unstable, - occ_is_unstable, - ) { - // no change of hiddeness or unstableness - (true, true, true, true) - | (true, true, false, false) - | (false, false, true, true) - | (false, false, false, false) => depth < occ_depth, - - // either less hidden or less unstable, accept - (true, true, false, true) - | (false, true, true, true) - | (false, true, false, true) - | (false, true, false, false) - | (false, false, false, true) => true, - // more hidden or unstable, discard - (true, true, true, false) - | (true, false, true, true) - | (true, false, true, false) - | (true, false, false, false) - | (false, false, true, false) => false, - - // exchanges doc(hidden) for unstable (and vice-versa), - (true, false, false, true) | (false, true, true, false) => { - depth < occ_depth - } - }; - // FIXME: Remove the overwrite rules as we can now record exports and - // aliases for the same item - if !overwrite { - continue; - } - entry.insert((depth, status)); - } - } - if let Some(ModuleDefId::TraitId(tr)) = item.as_module_def_id() { collect_trait_assoc_items( db, @@ -206,13 +164,14 @@ fn collect_import_map(db: &dyn DefDatabase, krate: CrateId) -> ImportMapIndex { ); } - map.insert(item, (smallvec![import_info], IsTraitAssocItem::No)); + map.entry(item) + .or_insert_with(|| (SmallVec::new(), IsTraitAssocItem::No)) + .0 + .push(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 we've just added a module, descend into it. if let Some(ModuleDefId::ModuleId(mod_id)) = item.as_module_def_id() { - worklist.push((mod_id, depth + 1)); + worklist.push(mod_id); } } } @@ -253,7 +212,11 @@ fn collect_trait_assoc_items( is_doc_hidden: attrs.has_doc_hidden(), is_unstable: attrs.is_unstable(), }; - map.insert(assoc_item, (smallvec![assoc_item_info], IsTraitAssocItem::Yes)); + + map.entry(assoc_item) + .or_insert_with(|| (SmallVec::new(), IsTraitAssocItem::Yes)) + .0 + .push(assoc_item_info); } } @@ -284,7 +247,7 @@ impl fmt::Debug for ImportMap { } /// A way to match import map contents against the search query. -#[derive(Debug)] +#[derive(Copy, Clone, Debug)] enum SearchMode { /// Import map entry should strictly match the query string. Exact, @@ -426,7 +389,7 @@ pub fn search_dependencies( while let Some((_, indexed_values)) = stream.next() { for &IndexedValue { index, value } in indexed_values { let import_map = &import_maps[index]; - let [importable, importables @ ..] = &import_map.importables[value as usize..] else { + let importables @ [importable, ..] = &import_map.importables[value as usize..] else { continue; }; @@ -441,38 +404,32 @@ pub fn search_dependencies( else { continue; }; - res.insert(*importable); - - if !importables.is_empty() { - // FIXME: so many allocs... - // 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| { + + // FIXME: so many allocs... + // 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| { + let &(ref import_infos, assoc_mode) = &import_map.map[item]; + query.matches_assoc_mode(assoc_mode) + && import_infos.iter().any(|info| { + info.name.to_smol_str().to_ascii_lowercase() == common_importable_name + }) + }) + .filter(|item| { + !query.case_sensitive || { + // we've already checked the common importables name case-insensitively let &(ref import_infos, assoc_mode) = &import_map.map[item]; query.matches_assoc_mode(assoc_mode) - && import_infos.iter().any(|info| { - info.name.to_smol_str().to_ascii_lowercase() - == common_importable_name - }) - }) - .filter(|item| { - !query.case_sensitive || { - // we've already checked the common importables name case-insensitively - let &(ref import_infos, assoc_mode) = &import_map.map[item]; - query.matches_assoc_mode(assoc_mode) - && import_infos - .iter() - .any(|info| query.import_matches(db, info, false)) - } - }); - res.extend(iter); - } + && import_infos.iter().any(|info| query.import_matches(db, info, false)) + } + }); + res.extend(iter); if res.len() >= query.limit { return res; @@ -665,6 +622,7 @@ mod tests { main: - publ1 (t) - real_pu2 (t) + - real_pu2::Pub (t) - real_pub (t) - real_pub::Pub (t) "#]], @@ -690,6 +648,7 @@ mod tests { - sub (t) - sub::Def (t) - sub::subsub (t) + - sub::subsub::Def (t) "#]], ); } @@ -789,7 +748,9 @@ mod tests { - module (t) - module::S (t) - module::S (v) + - module::module (t) - sub (t) + - sub::module (t) "#]], ); } |