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//! FIXME: write short doc here
use std::sync::Arc;
use ra_db::{
salsa::{self, Database, Durability},
Canceled, CheckCanceled, CrateId, FileId, FileLoader, FileLoaderDelegate, SourceDatabase,
SourceDatabaseExt, SourceRootId,
};
use relative_path::RelativePath;
use rustc_hash::FxHashMap;
use crate::{
symbol_index::{self, SymbolsDatabase},
FeatureFlags, LineIndex,
};
#[salsa::database(
ra_db::SourceDatabaseStorage,
ra_db::SourceDatabaseExtStorage,
LineIndexDatabaseStorage,
symbol_index::SymbolsDatabaseStorage,
hir::db::InternDatabaseStorage,
hir::db::AstDatabaseStorage,
hir::db::DefDatabaseStorage,
hir::db::HirDatabaseStorage
)]
#[derive(Debug)]
pub(crate) struct RootDatabase {
runtime: salsa::Runtime<RootDatabase>,
pub(crate) feature_flags: Arc<FeatureFlags>,
pub(crate) debug_data: Arc<DebugData>,
pub(crate) last_gc: crate::wasm_shims::Instant,
pub(crate) last_gc_check: crate::wasm_shims::Instant,
}
impl FileLoader for RootDatabase {
fn file_text(&self, file_id: FileId) -> Arc<String> {
FileLoaderDelegate(self).file_text(file_id)
}
fn resolve_relative_path(
&self,
anchor: FileId,
relative_path: &RelativePath,
) -> Option<FileId> {
FileLoaderDelegate(self).resolve_relative_path(anchor, relative_path)
}
fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {
FileLoaderDelegate(self).relevant_crates(file_id)
}
}
impl hir::debug::HirDebugHelper for RootDatabase {
fn crate_name(&self, krate: CrateId) -> Option<String> {
self.debug_data.crate_names.get(&krate).cloned()
}
fn file_path(&self, file_id: FileId) -> Option<String> {
let source_root_id = self.file_source_root(file_id);
let source_root_path = self.debug_data.root_paths.get(&source_root_id)?;
let file_path = self.file_relative_path(file_id);
Some(format!("{}/{}", source_root_path, file_path))
}
}
impl salsa::Database for RootDatabase {
fn salsa_runtime(&self) -> &salsa::Runtime<RootDatabase> {
&self.runtime
}
fn on_propagated_panic(&self) -> ! {
Canceled::throw()
}
fn salsa_event(&self, event: impl Fn() -> salsa::Event<RootDatabase>) {
match event().kind {
salsa::EventKind::DidValidateMemoizedValue { .. }
| salsa::EventKind::WillExecute { .. } => {
self.check_canceled();
}
_ => (),
}
}
}
impl Default for RootDatabase {
fn default() -> RootDatabase {
RootDatabase::new(None, FeatureFlags::default())
}
}
impl RootDatabase {
pub fn new(lru_capacity: Option<usize>, feature_flags: FeatureFlags) -> RootDatabase {
let mut db = RootDatabase {
runtime: salsa::Runtime::default(),
last_gc: crate::wasm_shims::Instant::now(),
last_gc_check: crate::wasm_shims::Instant::now(),
feature_flags: Arc::new(feature_flags),
debug_data: Default::default(),
};
db.set_crate_graph_with_durability(Default::default(), Durability::HIGH);
db.set_local_roots_with_durability(Default::default(), Durability::HIGH);
db.set_library_roots_with_durability(Default::default(), Durability::HIGH);
let lru_capacity = lru_capacity.unwrap_or(ra_db::DEFAULT_LRU_CAP);
db.query_mut(ra_db::ParseQuery).set_lru_capacity(lru_capacity);
db.query_mut(hir::db::ParseMacroQuery).set_lru_capacity(lru_capacity);
db.query_mut(hir::db::MacroExpandQuery).set_lru_capacity(lru_capacity);
db
}
}
impl salsa::ParallelDatabase for RootDatabase {
fn snapshot(&self) -> salsa::Snapshot<RootDatabase> {
salsa::Snapshot::new(RootDatabase {
runtime: self.runtime.snapshot(self),
last_gc: self.last_gc,
last_gc_check: self.last_gc_check,
feature_flags: Arc::clone(&self.feature_flags),
debug_data: Arc::clone(&self.debug_data),
})
}
}
#[salsa::query_group(LineIndexDatabaseStorage)]
pub(crate) trait LineIndexDatabase: ra_db::SourceDatabase + CheckCanceled {
fn line_index(&self, file_id: FileId) -> Arc<LineIndex>;
}
fn line_index(db: &impl LineIndexDatabase, file_id: FileId) -> Arc<LineIndex> {
let text = db.file_text(file_id);
Arc::new(LineIndex::new(&*text))
}
#[derive(Debug, Default, Clone)]
pub(crate) struct DebugData {
pub(crate) root_paths: FxHashMap<SourceRootId, String>,
pub(crate) crate_names: FxHashMap<CrateId, String>,
}
impl DebugData {
pub(crate) fn merge(&mut self, other: DebugData) {
self.root_paths.extend(other.root_paths.into_iter());
self.crate_names.extend(other.crate_names.into_iter());
}
}
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