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use std::{sync::Arc, time};
use ra_db::{
salsa::{self, Database},
Canceled, CheckCanceled, FileId, SourceDatabase,
};
use crate::{
symbol_index::{self, SymbolsDatabase},
LineIndex,
};
#[salsa::database(
ra_db::SourceDatabaseStorage,
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) last_gc: time::Instant,
pub(crate) last_gc_check: time::Instant,
}
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)
}
}
impl RootDatabase {
pub fn new(lru_capacity: Option<usize>) -> RootDatabase {
let mut db = RootDatabase {
runtime: salsa::Runtime::default(),
last_gc: time::Instant::now(),
last_gc_check: time::Instant::now(),
};
db.set_crate_graph(Default::default());
db.set_local_roots(Default::default());
db.set_library_roots(Default::default());
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,
})
}
}
#[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 ra_db::SourceDatabase, file_id: FileId) -> Arc<LineIndex> {
let text = db.file_text(file_id);
Arc::new(LineIndex::new(&*text))
}
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