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|
//! Loads a Cargo project into a static instance of analysis, without support
//! for incorporating changes.
use std::path::{Path, PathBuf};
use anyhow::Result;
use crossbeam_channel::{unbounded, Receiver};
use ra_db::{ExternSourceId, FileId, SourceRootId};
use ra_ide::{AnalysisChange, AnalysisHost};
use ra_project_model::{
get_rustc_cfg_options, CargoConfig, PackageRoot, ProcMacroClient, ProjectRoot, ProjectWorkspace,
};
use ra_vfs::{RootEntry, Vfs, VfsChange, VfsTask, Watch};
use rustc_hash::{FxHashMap, FxHashSet};
use crate::vfs_glob::RustPackageFilterBuilder;
fn vfs_file_to_id(f: ra_vfs::VfsFile) -> FileId {
FileId(f.0)
}
fn vfs_root_to_id(r: ra_vfs::VfsRoot) -> SourceRootId {
SourceRootId(r.0)
}
pub(crate) fn load_cargo(
root: &Path,
load_out_dirs_from_check: bool,
with_proc_macro: bool,
) -> Result<(AnalysisHost, FxHashMap<SourceRootId, PackageRoot>)> {
let root = std::env::current_dir()?.join(root);
let root = ProjectRoot::discover_single(&root)?;
let ws = ProjectWorkspace::load(
root,
&CargoConfig { load_out_dirs_from_check, ..Default::default() },
true,
)?;
let mut extern_dirs = FxHashSet::default();
extern_dirs.extend(ws.out_dirs());
let mut project_roots = ws.to_roots();
project_roots.extend(extern_dirs.iter().cloned().map(PackageRoot::new_non_member));
let (sender, receiver) = unbounded();
let sender = Box::new(move |t| sender.send(t).unwrap());
let (mut vfs, roots) = Vfs::new(
project_roots
.iter()
.map(|pkg_root| {
RootEntry::new(
pkg_root.path().to_owned(),
RustPackageFilterBuilder::default()
.set_member(pkg_root.is_member())
.into_vfs_filter(),
)
})
.collect(),
sender,
Watch(false),
);
let source_roots = roots
.into_iter()
.map(|vfs_root| {
let source_root_id = vfs_root_to_id(vfs_root);
let project_root = project_roots
.iter()
.find(|it| it.path() == vfs.root2path(vfs_root))
.unwrap()
.clone();
(source_root_id, project_root)
})
.collect::<FxHashMap<_, _>>();
let proc_macro_client = if !with_proc_macro {
ProcMacroClient::dummy()
} else {
let mut path = std::env::current_exe()?;
path.pop();
path.push("rust-analyzer");
ProcMacroClient::extern_process(&path, &["proc-macro"]).unwrap()
};
let host = load(&source_roots, ws, &mut vfs, receiver, extern_dirs, &proc_macro_client);
Ok((host, source_roots))
}
pub(crate) fn load(
source_roots: &FxHashMap<SourceRootId, PackageRoot>,
ws: ProjectWorkspace,
vfs: &mut Vfs,
receiver: Receiver<VfsTask>,
extern_dirs: FxHashSet<PathBuf>,
proc_macro_client: &ProcMacroClient,
) -> AnalysisHost {
let lru_cap = std::env::var("RA_LRU_CAP").ok().and_then(|it| it.parse::<usize>().ok());
let mut host = AnalysisHost::new(lru_cap);
let mut analysis_change = AnalysisChange::new();
// wait until Vfs has loaded all roots
let mut roots_loaded = FxHashSet::default();
let mut extern_source_roots = FxHashMap::default();
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);
let is_local = source_roots[&source_root_id].is_member();
log::debug!(
"loaded source root {:?} with path {:?}",
source_root_id,
vfs.root2path(root)
);
analysis_change.add_root(source_root_id, is_local);
analysis_change.set_debug_root_path(
source_root_id,
source_roots[&source_root_id].path().display().to_string(),
);
let vfs_root_path = vfs.root2path(root);
if extern_dirs.contains(&vfs_root_path) {
extern_source_roots.insert(vfs_root_path, ExternSourceId(root.0));
}
let mut file_map = FxHashMap::default();
for (vfs_file, path, text) in files {
let file_id = vfs_file_to_id(vfs_file);
analysis_change.add_file(source_root_id, file_id, path.clone(), text);
file_map.insert(path, file_id);
}
roots_loaded.insert(source_root_id);
if roots_loaded.len() == vfs.n_roots() {
done = true;
}
}
VfsChange::AddFile { root, file, path, text } => {
let source_root_id = vfs_root_to_id(root);
let file_id = vfs_file_to_id(file);
analysis_change.add_file(source_root_id, file_id, path, text);
}
VfsChange::RemoveFile { .. } | VfsChange::ChangeFile { .. } => {
// We just need the first scan, so just ignore these
}
}
}
if done {
break;
}
}
// FIXME: cfg options?
let default_cfg_options = {
let mut opts = get_rustc_cfg_options();
opts.insert_atom("test".into());
opts.insert_atom("debug_assertion".into());
opts
};
let crate_graph = ws.to_crate_graph(
&default_cfg_options,
&extern_source_roots,
proc_macro_client,
&mut |path: &Path| {
// Some path from metadata will be non canonicalized, e.g. /foo/../bar/lib.rs
let path = path.canonicalize().ok()?;
let vfs_file = vfs.load(&path);
log::debug!("vfs file {:?} -> {:?}", path, vfs_file);
vfs_file.map(vfs_file_to_id)
},
);
log::debug!("crate graph: {:?}", crate_graph);
analysis_change.set_crate_graph(crate_graph);
host.apply_change(analysis_change);
host
}
#[cfg(test)]
mod tests {
use super::*;
use hir::Crate;
#[test]
fn test_loading_rust_analyzer() {
let path = Path::new(env!("CARGO_MANIFEST_DIR")).parent().unwrap().parent().unwrap();
let (host, _roots) = load_cargo(path, false, false).unwrap();
let n_crates = Crate::all(host.raw_database()).len();
// RA has quite a few crates, but the exact count doesn't matter
assert!(n_crates > 20);
}
}
|
