1834bae5b8
This wasn't a right decision in the first place, the feature flag was broken in the last rustfmt release, and syntax highlighting of imports is more important anyway
125 lines
4.2 KiB
Rust
125 lines
4.2 KiB
Rust
mod vfs_filter;
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use std::{collections::HashSet, error::Error, path::Path};
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use rustc_hash::FxHashMap;
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use ra_db::{CrateGraph, FileId, SourceRootId};
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use ra_ide_api::{AnalysisChange, AnalysisHost};
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use ra_project_model::{ProjectRoot, ProjectWorkspace};
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use ra_vfs::{Vfs, VfsChange};
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use vfs_filter::IncludeRustFiles;
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type Result<T> = std::result::Result<T, Box<dyn Error + Send + Sync>>;
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fn vfs_file_to_id(f: ra_vfs::VfsFile) -> FileId {
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FileId(f.0)
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}
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fn vfs_root_to_id(r: ra_vfs::VfsRoot) -> SourceRootId {
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SourceRootId(r.0)
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}
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pub fn load_cargo(root: &Path) -> Result<(AnalysisHost, FxHashMap<SourceRootId, ProjectRoot>)> {
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let root = std::env::current_dir()?.join(root);
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let ws = ProjectWorkspace::discover(root.as_ref())?;
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let project_roots = ws.to_roots();
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let (mut vfs, roots) = Vfs::new(IncludeRustFiles::from_roots(project_roots.clone()).collect());
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let crate_graph = ws.to_crate_graph(&mut |path: &Path| {
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let vfs_file = vfs.load(path);
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log::debug!("vfs file {:?} -> {:?}", path, vfs_file);
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vfs_file.map(vfs_file_to_id)
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});
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log::debug!("crate graph: {:?}", crate_graph);
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let source_roots = roots
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.iter()
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.map(|&vfs_root| {
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let source_root_id = vfs_root_to_id(vfs_root);
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let project_root = project_roots
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.iter()
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.find(|it| it.path() == &vfs.root2path(vfs_root))
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.unwrap()
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.clone();
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(source_root_id, project_root)
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})
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.collect::<FxHashMap<_, _>>();
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let host = load(&source_roots, crate_graph, &mut vfs);
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Ok((host, source_roots))
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}
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pub fn load(
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source_roots: &FxHashMap<SourceRootId, ProjectRoot>,
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crate_graph: CrateGraph,
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vfs: &mut Vfs,
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) -> AnalysisHost {
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let lru_cap = std::env::var("RA_LRU_CAP").ok().and_then(|it| it.parse::<usize>().ok());
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let mut host = AnalysisHost::new(lru_cap);
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let mut analysis_change = AnalysisChange::new();
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analysis_change.set_crate_graph(crate_graph);
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// wait until Vfs has loaded all roots
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let receiver = vfs.task_receiver().clone();
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let mut roots_loaded = HashSet::new();
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for task in receiver {
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vfs.handle_task(task);
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let mut done = false;
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for change in vfs.commit_changes() {
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match change {
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VfsChange::AddRoot { root, files } => {
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let source_root_id = vfs_root_to_id(root);
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let is_local = source_roots[&source_root_id].is_member();
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log::debug!(
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"loaded source root {:?} with path {:?}",
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source_root_id,
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vfs.root2path(root)
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);
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analysis_change.add_root(source_root_id, is_local);
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let mut file_map = FxHashMap::default();
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for (vfs_file, path, text) in files {
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let file_id = vfs_file_to_id(vfs_file);
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analysis_change.add_file(source_root_id, file_id, path.clone(), text);
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file_map.insert(path, file_id);
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}
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roots_loaded.insert(source_root_id);
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if roots_loaded.len() == vfs.n_roots() {
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done = true;
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}
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}
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VfsChange::AddFile { .. }
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| VfsChange::RemoveFile { .. }
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| VfsChange::ChangeFile { .. } => {
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// We just need the first scan, so just ignore these
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}
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}
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}
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if done {
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break;
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}
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}
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host.apply_change(analysis_change);
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host
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use ra_hir::Crate;
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#[test]
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fn test_loading_rust_analyzer() {
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let path = Path::new(env!("CARGO_MANIFEST_DIR")).parent().unwrap().parent().unwrap();
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let (host, roots) = load_cargo(path).unwrap();
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let mut n_crates = 0;
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for (root, _) in roots {
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for _krate in Crate::source_root_crates(host.raw_database(), root) {
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n_crates += 1;
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}
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}
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// RA has quite a few crates, but the exact count doesn't matter
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assert!(n_crates > 20);
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}
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}
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