1 //! This crate defines the core datastructure representing IDE state -- `RootDatabase`.
3 //! It is mainly a `HirDatabase` for semantic analysis, plus a `SymbolsDatabase`, for fuzzy search.
11 pub mod items_locator;
12 pub mod source_change;
18 use std::{fmt, sync::Arc};
21 salsa::{self, Durability},
22 AnchoredPath, CrateId, FileId, FileLoader, FileLoaderDelegate, SourceDatabase, Upcast,
24 use hir::db::{AstDatabase, DefDatabase, HirDatabase};
25 use rustc_hash::FxHashSet;
27 use crate::{line_index::LineIndex, symbol_index::SymbolsDatabase};
29 /// `base_db` is normally also needed in places where `ide_db` is used, so this re-export is for convenience.
33 base_db::SourceDatabaseStorage,
34 base_db::SourceDatabaseExtStorage,
35 LineIndexDatabaseStorage,
36 symbol_index::SymbolsDatabaseStorage,
37 hir::db::InternDatabaseStorage,
38 hir::db::AstDatabaseStorage,
39 hir::db::DefDatabaseStorage,
40 hir::db::HirDatabaseStorage
42 pub struct RootDatabase {
43 storage: salsa::Storage<RootDatabase>,
46 impl fmt::Debug for RootDatabase {
47 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
48 f.debug_struct("RootDatabase").finish()
52 impl Upcast<dyn AstDatabase> for RootDatabase {
53 fn upcast(&self) -> &(dyn AstDatabase + 'static) {
58 impl Upcast<dyn DefDatabase> for RootDatabase {
59 fn upcast(&self) -> &(dyn DefDatabase + 'static) {
64 impl Upcast<dyn HirDatabase> for RootDatabase {
65 fn upcast(&self) -> &(dyn HirDatabase + 'static) {
70 impl FileLoader for RootDatabase {
71 fn file_text(&self, file_id: FileId) -> Arc<String> {
72 FileLoaderDelegate(self).file_text(file_id)
74 fn resolve_path(&self, path: AnchoredPath) -> Option<FileId> {
75 FileLoaderDelegate(self).resolve_path(path)
77 fn relevant_crates(&self, file_id: FileId) -> Arc<FxHashSet<CrateId>> {
78 FileLoaderDelegate(self).relevant_crates(file_id)
82 impl salsa::Database for RootDatabase {}
84 impl Default for RootDatabase {
85 fn default() -> RootDatabase {
86 RootDatabase::new(None)
91 pub fn new(lru_capacity: Option<usize>) -> RootDatabase {
92 let mut db = RootDatabase { storage: salsa::Storage::default() };
93 db.set_crate_graph_with_durability(Default::default(), Durability::HIGH);
94 db.set_local_roots_with_durability(Default::default(), Durability::HIGH);
95 db.set_library_roots_with_durability(Default::default(), Durability::HIGH);
96 db.update_lru_capacity(lru_capacity);
100 pub fn update_lru_capacity(&mut self, lru_capacity: Option<usize>) {
101 let lru_capacity = lru_capacity.unwrap_or(base_db::DEFAULT_LRU_CAP);
102 base_db::ParseQuery.in_db_mut(self).set_lru_capacity(lru_capacity);
103 hir::db::ParseMacroExpansionQuery.in_db_mut(self).set_lru_capacity(lru_capacity);
104 hir::db::MacroExpandQuery.in_db_mut(self).set_lru_capacity(lru_capacity);
108 impl salsa::ParallelDatabase for RootDatabase {
109 fn snapshot(&self) -> salsa::Snapshot<RootDatabase> {
110 salsa::Snapshot::new(RootDatabase { storage: self.storage.snapshot() })
114 #[salsa::query_group(LineIndexDatabaseStorage)]
115 pub trait LineIndexDatabase: base_db::SourceDatabase {
116 fn line_index(&self, file_id: FileId) -> Arc<LineIndex>;
119 fn line_index(db: &dyn LineIndexDatabase, file_id: FileId) -> Arc<LineIndex> {
120 let text = db.file_text(file_id);
121 Arc::new(LineIndex::new(&*text))
124 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
125 pub enum SymbolKind {