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use std::sync::Arc;
use std::path::Path;
use std::collections::HashSet;
use rustc_hash::FxHashMap;
use ra_db::{
CrateGraph, FileId, SourceRoot, SourceRootId, SourceDatabase, salsa,
};
use ra_hir::{db, HirInterner};
use ra_project_model::ProjectWorkspace;
use ra_vfs::{Vfs, VfsChange};
type Result<T> = std::result::Result<T, failure::Error>;
#[salsa::database(
ra_db::SourceDatabaseStorage,
db::HirDatabaseStorage,
db::PersistentHirDatabaseStorage
)]
#[derive(Debug)]
pub struct BatchDatabase {
runtime: salsa::Runtime<BatchDatabase>,
interner: Arc<HirInterner>,
}
impl salsa::Database for BatchDatabase {
fn salsa_runtime(&self) -> &salsa::Runtime<BatchDatabase> {
&self.runtime
}
}
impl AsRef<HirInterner> for BatchDatabase {
fn as_ref(&self) -> &HirInterner {
&self.interner
}
}
fn vfs_file_to_id(f: ra_vfs::VfsFile) -> FileId {
FileId(f.0.into())
}
fn vfs_root_to_id(r: ra_vfs::VfsRoot) -> SourceRootId {
SourceRootId(r.0.into())
}
impl BatchDatabase {
pub fn load(crate_graph: CrateGraph, vfs: &mut Vfs) -> BatchDatabase {
let mut db =
BatchDatabase { runtime: salsa::Runtime::default(), interner: Default::default() };
db.set_crate_graph(Arc::new(crate_graph));
// wait until Vfs has loaded all roots
let receiver = vfs.task_receiver().clone();
let mut roots_loaded = HashSet::new();
for task in receiver {
vfs.handle_task(task);
let mut done = false;
for change in vfs.commit_changes() {
match change {
VfsChange::AddRoot { root, files } => {
let source_root_id = vfs_root_to_id(root);
log::debug!(
"loaded source root {:?} with path {:?}",
source_root_id,
vfs.root2path(root)
);
let mut file_map = FxHashMap::default();
for (vfs_file, path, text) in files {
let file_id = vfs_file_to_id(vfs_file);
db.set_file_text(file_id, text);
db.set_file_relative_path(file_id, path.clone());
db.set_file_source_root(file_id, source_root_id);
file_map.insert(path, file_id);
}
let source_root = SourceRoot { files: file_map };
db.set_source_root(source_root_id, Arc::new(source_root));
roots_loaded.insert(source_root_id);
if roots_loaded.len() == vfs.num_roots() {
done = true;
}
}
VfsChange::AddFile { .. }
| VfsChange::RemoveFile { .. }
| VfsChange::ChangeFile { .. } => {
// We just need the first scan, so just ignore these
}
}
}
if done {
break;
}
}
db
}
pub fn load_cargo(root: impl AsRef<Path>) -> Result<(BatchDatabase, Vec<SourceRootId>)> {
let root = root.as_ref().canonicalize()?;
let ws = ProjectWorkspace::discover(root.as_ref())?;
let mut roots = Vec::new();
roots.push(root.clone());
for pkg in ws.cargo.packages() {
roots.push(pkg.root(&ws.cargo).to_path_buf());
}
for krate in ws.sysroot.crates() {
roots.push(krate.root_dir(&ws.sysroot).to_path_buf())
}
let (mut vfs, roots) = Vfs::new(roots);
let mut load = |path: &Path| {
let vfs_file = vfs.load(path);
log::debug!("vfs file {:?} -> {:?}", path, vfs_file);
vfs_file.map(vfs_file_to_id)
};
let crate_graph = ws.to_crate_graph(&mut load);
log::debug!("crate graph: {:?}", crate_graph);
let local_roots = roots
.into_iter()
.filter(|r| vfs.root2path(*r).starts_with(&root))
.map(vfs_root_to_id)
.collect();
let db = BatchDatabase::load(crate_graph, &mut vfs);
let _ = vfs.shutdown();
Ok((db, local_roots))
}
}
#[cfg(test)]
mod tests {
use ra_hir::Crate;
use super::*;
#[test]
fn test_loading_rust_analyzer() {
let mut path = std::env::current_exe().unwrap();
while !path.join("Cargo.toml").is_file() {
path = path.parent().unwrap().to_owned();
}
let (db, roots) = BatchDatabase::load_cargo(path).unwrap();
let mut num_crates = 0;
for root in roots {
for _krate in Crate::source_root_crates(&db, root) {
num_crates += 1;
}
}
// RA has quite a few crates, but the exact count doesn't matter
assert!(num_crates > 20);
}
}
|
