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|
//! Database used for testing `hir`.
use std::{
panic,
sync::{Arc, Mutex},
};
use hir_def::{db::DefDatabase, AssocItemId, ModuleDefId, ModuleId};
use hir_expand::{db::AstDatabase, diagnostics::DiagnosticSink};
use ra_db::{
salsa, CrateId, FileId, FileLoader, FileLoaderDelegate, RelativePath, SourceDatabase, Upcast,
};
use stdx::format_to;
use crate::{db::HirDatabase, diagnostics::Diagnostic, expr::ExprValidator};
#[salsa::database(
ra_db::SourceDatabaseExtStorage,
ra_db::SourceDatabaseStorage,
hir_expand::db::AstDatabaseStorage,
hir_def::db::InternDatabaseStorage,
hir_def::db::DefDatabaseStorage,
crate::db::HirDatabaseStorage
)]
#[derive(Debug, Default)]
pub struct TestDB {
events: Mutex<Option<Vec<salsa::Event<TestDB>>>>,
runtime: salsa::Runtime<TestDB>,
}
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_runtime(&self) -> &salsa::Runtime<TestDB> {
&self.runtime
}
fn salsa_runtime_mut(&mut self) -> &mut salsa::Runtime<Self> {
&mut self.runtime
}
fn salsa_event(&self, event: impl Fn() -> salsa::Event<TestDB>) {
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 {
events: Default::default(),
runtime: self.runtime.snapshot(self),
})
}
}
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, anchor: FileId, path: &str) -> Option<FileId> {
FileLoaderDelegate(self).resolve_path(anchor, path)
}
fn relevant_crates(&self, file_id: FileId) -> Arc<Vec<CrateId>> {
FileLoaderDelegate(self).relevant_crates(file_id)
}
fn resolve_extern_path(
&self,
extern_id: ra_db::ExternSourceId,
relative_path: &RelativePath,
) -> Option<FileId> {
FileLoaderDelegate(self).resolve_extern_path(extern_id, relative_path)
}
}
impl TestDB {
pub 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.iter() {
if data.origin.file_id() == Some(file_id) {
return ModuleId { krate, local_id };
}
}
}
panic!("Can't find module for file")
}
fn diag<F: FnMut(&dyn Diagnostic)>(&self, mut cb: F) {
let crate_graph = self.crate_graph();
for krate in crate_graph.iter() {
let crate_def_map = self.crate_def_map(krate);
let mut fns = Vec::new();
for (module_id, _) in crate_def_map.modules.iter() {
for decl in crate_def_map[module_id].scope.declarations() {
if let ModuleDefId::FunctionId(f) = decl {
fns.push(f)
}
}
for impl_id in crate_def_map[module_id].scope.impls() {
let impl_data = self.impl_data(impl_id);
for item in impl_data.items.iter() {
if let AssocItemId::FunctionId(f) = item {
fns.push(*f)
}
}
}
}
for f in fns {
let infer = self.infer(f.into());
let mut sink = DiagnosticSink::new(&mut cb);
infer.add_diagnostics(self, f, &mut sink);
let mut validator = ExprValidator::new(f, infer, &mut sink);
validator.validate_body(self);
}
}
}
pub fn diagnostics(&self) -> (String, u32) {
let mut buf = String::new();
let mut count = 0;
self.diag(|d| {
format_to!(buf, "{:?}: {}\n", d.syntax_node(self).text(), d.message());
count += 1;
});
(buf, count)
}
/// Like `diagnostics`, but filtered for a single diagnostic.
pub fn diagnostic<D: Diagnostic>(&self) -> (String, u32) {
let mut buf = String::new();
let mut count = 0;
self.diag(|d| {
// We want to filter diagnostics by the particular one we are testing for, to
// avoid surprising results in tests.
if d.downcast_ref::<D>().is_some() {
format_to!(buf, "{:?}: {}\n", d.syntax_node(self).text(), d.message());
count += 1;
};
});
(buf, count)
}
}
impl TestDB {
pub fn log(&self, f: impl FnOnce()) -> Vec<salsa::Event<TestDB>> {
*self.events.lock().unwrap() = Some(Vec::new());
f();
self.events.lock().unwrap().take().unwrap()
}
pub 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))
}
_ => None,
})
.collect()
}
}
|
