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|
//! Database used for testing `hir`.
use std::{
fmt, panic,
sync::{Arc, Mutex},
};
use base_db::{
salsa, AnchoredPath, CrateId, FileId, FileLoader, FileLoaderDelegate, SourceDatabase, Upcast,
};
use hir_def::{db::DefDatabase, ModuleId};
use hir_expand::db::AstDatabase;
use rustc_hash::{FxHashMap, FxHashSet};
use syntax::TextRange;
use test_utils::extract_annotations;
#[salsa::database(
base_db::SourceDatabaseExtStorage,
base_db::SourceDatabaseStorage,
hir_expand::db::AstDatabaseStorage,
hir_def::db::InternDatabaseStorage,
hir_def::db::DefDatabaseStorage,
crate::db::HirDatabaseStorage
)]
#[derive(Default)]
pub(crate) struct TestDB {
storage: salsa::Storage<TestDB>,
events: Mutex<Option<Vec<salsa::Event>>>,
}
impl fmt::Debug for TestDB {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("TestDB").finish()
}
}
impl Upcast<dyn AstDatabase> for TestDB {
fn upcast(&self) -> &(dyn AstDatabase + 'static) {
&*self
}
}
impl Upcast<dyn DefDatabase> for TestDB {
fn upcast(&self) -> &(dyn DefDatabase + 'static) {
&*self
}
}
impl salsa::Database for TestDB {
fn salsa_event(&self, event: salsa::Event) {
let mut events = self.events.lock().unwrap();
if let Some(events) = &mut *events {
events.push(event);
}
}
}
impl salsa::ParallelDatabase for TestDB {
fn snapshot(&self) -> salsa::Snapshot<TestDB> {
salsa::Snapshot::new(TestDB {
storage: self.storage.snapshot(),
events: Default::default(),
})
}
}
impl panic::RefUnwindSafe for TestDB {}
impl FileLoader for TestDB {
fn file_text(&self, file_id: FileId) -> Arc<String> {
FileLoaderDelegate(self).file_text(file_id)
}
fn resolve_path(&self, path: AnchoredPath) -> Option<FileId> {
FileLoaderDelegate(self).resolve_path(path)
}
fn relevant_crates(&self, file_id: FileId) -> Arc<FxHashSet<CrateId>> {
FileLoaderDelegate(self).relevant_crates(file_id)
}
}
impl TestDB {
pub(crate) fn module_for_file(&self, file_id: FileId) -> ModuleId {
for &krate in self.relevant_crates(file_id).iter() {
let crate_def_map = self.crate_def_map(krate);
for (local_id, data) in crate_def_map.modules() {
if data.origin.file_id() == Some(file_id) {
return ModuleId { krate, local_id };
}
}
}
panic!("Can't find module for file")
}
pub(crate) fn extract_annotations(&self) -> FxHashMap<FileId, Vec<(TextRange, String)>> {
let mut files = Vec::new();
let crate_graph = self.crate_graph();
for krate in crate_graph.iter() {
let crate_def_map = self.crate_def_map(krate);
for (module_id, _) in crate_def_map.modules() {
let file_id = crate_def_map[module_id].origin.file_id();
files.extend(file_id)
}
}
files
.into_iter()
.filter_map(|file_id| {
let text = self.file_text(file_id);
let annotations = extract_annotations(&text);
if annotations.is_empty() {
return None;
}
Some((file_id, annotations))
})
.collect()
}
}
impl TestDB {
pub(crate) fn log(&self, f: impl FnOnce()) -> Vec<salsa::Event> {
*self.events.lock().unwrap() = Some(Vec::new());
f();
self.events.lock().unwrap().take().unwrap()
}
pub(crate) fn log_executed(&self, f: impl FnOnce()) -> Vec<String> {
let events = self.log(f);
events
.into_iter()
.filter_map(|e| match e.kind {
// This pretty horrible, but `Debug` is the only way to inspect
// QueryDescriptor at the moment.
salsa::EventKind::WillExecute { database_key } => {
Some(format!("{:?}", database_key.debug(self)))
}
_ => None,
})
.collect()
}
}
|
