347 lines
12 KiB
Rust
347 lines
12 KiB
Rust
//! The context or environment in which the language server functions. In our
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//! server implementation this is know as the `WorldState`.
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//!
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//! Each tick provides an immutable snapshot of the state as `WorldSnapshot`.
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use std::{
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path::{Path, PathBuf},
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sync::Arc,
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};
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use crossbeam_channel::{unbounded, Receiver};
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use lsp_types::Url;
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use parking_lot::RwLock;
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use ra_flycheck::{Flycheck, FlycheckConfig};
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use ra_ide::{
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Analysis, AnalysisChange, AnalysisHost, CrateGraph, FileId, LibraryData, SourceRootId,
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};
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use ra_project_model::{get_rustc_cfg_options, ProcMacroClient, ProjectWorkspace};
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use ra_vfs::{LineEndings, RootEntry, Vfs, VfsChange, VfsFile, VfsRoot, VfsTask, Watch};
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use relative_path::RelativePathBuf;
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use stdx::format_to;
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use crate::{
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config::Config,
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diagnostics::{
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to_proto::url_from_path_with_drive_lowercasing, CheckFixes, DiagnosticCollection,
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},
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main_loop::pending_requests::{CompletedRequest, LatestRequests},
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vfs_glob::{Glob, RustPackageFilterBuilder},
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LspError, Result,
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};
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use ra_db::ExternSourceId;
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use rustc_hash::{FxHashMap, FxHashSet};
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fn create_flycheck(workspaces: &[ProjectWorkspace], config: &FlycheckConfig) -> Option<Flycheck> {
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// FIXME: Figure out the multi-workspace situation
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workspaces
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.iter()
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.find_map(|w| match w {
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ProjectWorkspace::Cargo { cargo, .. } => Some(cargo),
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ProjectWorkspace::Json { .. } => None,
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})
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.map(|cargo| {
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let cargo_project_root = cargo.workspace_root().to_path_buf();
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Some(Flycheck::new(config.clone(), cargo_project_root))
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})
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.unwrap_or_else(|| {
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log::warn!("Cargo check watching only supported for cargo workspaces, disabling");
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None
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})
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}
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/// `GlobalState` is the primary mutable state of the language server
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///
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/// The most interesting components are `vfs`, which stores a consistent
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/// snapshot of the file systems, and `analysis_host`, which stores our
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/// incremental salsa database.
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#[derive(Debug)]
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pub struct GlobalState {
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pub config: Config,
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pub local_roots: Vec<PathBuf>,
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pub workspaces: Arc<Vec<ProjectWorkspace>>,
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pub analysis_host: AnalysisHost,
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pub vfs: Arc<RwLock<Vfs>>,
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pub task_receiver: Receiver<VfsTask>,
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pub latest_requests: Arc<RwLock<LatestRequests>>,
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pub flycheck: Option<Flycheck>,
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pub diagnostics: DiagnosticCollection,
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pub proc_macro_client: ProcMacroClient,
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}
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/// An immutable snapshot of the world's state at a point in time.
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pub struct GlobalStateSnapshot {
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pub config: Config,
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pub workspaces: Arc<Vec<ProjectWorkspace>>,
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pub analysis: Analysis,
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pub latest_requests: Arc<RwLock<LatestRequests>>,
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pub check_fixes: CheckFixes,
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vfs: Arc<RwLock<Vfs>>,
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}
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impl GlobalState {
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pub fn new(
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workspaces: Vec<ProjectWorkspace>,
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lru_capacity: Option<usize>,
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exclude_globs: &[Glob],
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watch: Watch,
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config: Config,
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) -> GlobalState {
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let mut change = AnalysisChange::new();
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let extern_dirs: FxHashSet<_> =
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workspaces.iter().flat_map(ProjectWorkspace::out_dirs).collect();
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let mut local_roots = Vec::new();
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let roots: Vec<_> = {
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let create_filter = |is_member| {
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RustPackageFilterBuilder::default()
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.set_member(is_member)
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.exclude(exclude_globs.iter().cloned())
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.into_vfs_filter()
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};
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workspaces
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.iter()
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.flat_map(ProjectWorkspace::to_roots)
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.map(|pkg_root| {
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let path = pkg_root.path().to_owned();
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if pkg_root.is_member() {
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local_roots.push(path.clone());
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}
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RootEntry::new(path, create_filter(pkg_root.is_member()))
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})
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.chain(
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extern_dirs
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.iter()
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.map(|path| RootEntry::new(path.to_owned(), create_filter(false))),
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)
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.collect()
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};
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let (task_sender, task_receiver) = unbounded();
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let task_sender = Box::new(move |t| task_sender.send(t).unwrap());
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let (mut vfs, vfs_roots) = Vfs::new(roots, task_sender, watch);
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let mut extern_source_roots = FxHashMap::default();
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for r in vfs_roots {
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let vfs_root_path = vfs.root2path(r);
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let is_local = local_roots.iter().any(|it| vfs_root_path.starts_with(it));
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change.add_root(SourceRootId(r.0), is_local);
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change.set_debug_root_path(SourceRootId(r.0), vfs_root_path.display().to_string());
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// FIXME: add path2root in vfs to simpily this logic
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if extern_dirs.contains(&vfs_root_path) {
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extern_source_roots.insert(vfs_root_path, ExternSourceId(r.0));
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}
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}
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// FIXME: Read default cfgs from config
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let default_cfg_options = {
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let mut opts = get_rustc_cfg_options(config.cargo.target.as_ref());
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opts.insert_atom("debug_assertion".into());
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opts
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};
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let proc_macro_client = match &config.proc_macro_srv {
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None => ProcMacroClient::dummy(),
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Some((path, args)) => match ProcMacroClient::extern_process(path.into(), args) {
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Ok(it) => it,
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Err(err) => {
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log::error!(
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"Failed to run ra_proc_macro_srv from path {}, error: {:?}",
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path.display(),
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err
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);
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ProcMacroClient::dummy()
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}
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},
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};
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// Create crate graph from all the workspaces
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let mut crate_graph = CrateGraph::default();
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let mut load = |path: &Path| {
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// Some path from metadata will be non canonicalized, e.g. /foo/../bar/lib.rs
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let path = path.canonicalize().ok()?;
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let vfs_file = vfs.load(&path);
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vfs_file.map(|f| FileId(f.0))
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};
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for ws in workspaces.iter() {
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crate_graph.extend(ws.to_crate_graph(
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&default_cfg_options,
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&extern_source_roots,
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&proc_macro_client,
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&mut load,
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));
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}
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change.set_crate_graph(crate_graph);
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let flycheck = config.check.as_ref().and_then(|c| create_flycheck(&workspaces, c));
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let mut analysis_host = AnalysisHost::new(lru_capacity);
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analysis_host.apply_change(change);
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GlobalState {
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config,
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local_roots,
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workspaces: Arc::new(workspaces),
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analysis_host,
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vfs: Arc::new(RwLock::new(vfs)),
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task_receiver,
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latest_requests: Default::default(),
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flycheck,
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diagnostics: Default::default(),
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proc_macro_client,
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}
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}
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pub fn update_configuration(&mut self, config: Config) {
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self.analysis_host.update_lru_capacity(config.lru_capacity);
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if config.check != self.config.check {
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self.flycheck =
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config.check.as_ref().and_then(|it| create_flycheck(&self.workspaces, it));
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}
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self.config = config;
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}
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/// Returns a vec of libraries
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/// FIXME: better API here
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pub fn process_changes(
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&mut self,
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roots_scanned: &mut usize,
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) -> Option<Vec<(SourceRootId, Vec<(FileId, RelativePathBuf, Arc<String>)>)>> {
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let changes = self.vfs.write().commit_changes();
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if changes.is_empty() {
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return None;
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}
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let mut libs = Vec::new();
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let mut change = AnalysisChange::new();
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for c in changes {
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match c {
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VfsChange::AddRoot { root, files } => {
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let root_path = self.vfs.read().root2path(root);
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let is_local = self.local_roots.iter().any(|r| root_path.starts_with(r));
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if is_local {
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*roots_scanned += 1;
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for (file, path, text) in files {
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change.add_file(SourceRootId(root.0), FileId(file.0), path, text);
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}
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} else {
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let files = files
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.into_iter()
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.map(|(vfsfile, path, text)| (FileId(vfsfile.0), path, text))
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.collect();
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libs.push((SourceRootId(root.0), files));
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}
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}
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VfsChange::AddFile { root, file, path, text } => {
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change.add_file(SourceRootId(root.0), FileId(file.0), path, text);
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}
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VfsChange::RemoveFile { root, file, path } => {
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change.remove_file(SourceRootId(root.0), FileId(file.0), path)
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}
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VfsChange::ChangeFile { file, text } => {
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change.change_file(FileId(file.0), text);
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}
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}
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}
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self.analysis_host.apply_change(change);
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Some(libs)
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}
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pub fn add_lib(&mut self, data: LibraryData) {
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let mut change = AnalysisChange::new();
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change.add_library(data);
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self.analysis_host.apply_change(change);
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}
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pub fn snapshot(&self) -> GlobalStateSnapshot {
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GlobalStateSnapshot {
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config: self.config.clone(),
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workspaces: Arc::clone(&self.workspaces),
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analysis: self.analysis_host.analysis(),
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vfs: Arc::clone(&self.vfs),
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latest_requests: Arc::clone(&self.latest_requests),
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check_fixes: Arc::clone(&self.diagnostics.check_fixes),
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}
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}
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pub fn maybe_collect_garbage(&mut self) {
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self.analysis_host.maybe_collect_garbage()
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}
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pub fn collect_garbage(&mut self) {
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self.analysis_host.collect_garbage()
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}
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pub fn complete_request(&mut self, request: CompletedRequest) {
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self.latest_requests.write().record(request)
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}
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}
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impl GlobalStateSnapshot {
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pub fn analysis(&self) -> &Analysis {
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&self.analysis
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}
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pub fn uri_to_file_id(&self, uri: &Url) -> Result<FileId> {
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let path = uri.to_file_path().map_err(|()| format!("invalid uri: {}", uri))?;
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let file = self.vfs.read().path2file(&path).ok_or_else(|| {
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// Show warning as this file is outside current workspace
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// FIXME: just handle such files, and remove `LspError::UNKNOWN_FILE`.
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LspError {
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code: LspError::UNKNOWN_FILE,
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message: "Rust file outside current workspace is not supported yet.".to_string(),
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}
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})?;
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Ok(FileId(file.0))
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}
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pub fn file_id_to_uri(&self, id: FileId) -> Result<Url> {
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let path = self.vfs.read().file2path(VfsFile(id.0));
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let url = url_from_path_with_drive_lowercasing(path)?;
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Ok(url)
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}
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pub fn file_id_to_path(&self, id: FileId) -> PathBuf {
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self.vfs.read().file2path(VfsFile(id.0))
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}
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pub fn file_line_endings(&self, id: FileId) -> LineEndings {
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self.vfs.read().file_line_endings(VfsFile(id.0))
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}
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pub fn path_to_uri(&self, root: SourceRootId, path: &RelativePathBuf) -> Result<Url> {
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let base = self.vfs.read().root2path(VfsRoot(root.0));
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let path = path.to_path(base);
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let url = Url::from_file_path(&path)
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.map_err(|_| format!("can't convert path to url: {}", path.display()))?;
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Ok(url)
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}
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pub fn status(&self) -> String {
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let mut buf = String::new();
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if self.workspaces.is_empty() {
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buf.push_str("no workspaces\n")
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} else {
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buf.push_str("workspaces:\n");
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for w in self.workspaces.iter() {
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format_to!(buf, "{} packages loaded\n", w.n_packages());
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}
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}
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buf.push_str("\nanalysis:\n");
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buf.push_str(
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&self
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.analysis
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.status()
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.unwrap_or_else(|_| "Analysis retrieval was cancelled".to_owned()),
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);
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buf
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}
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pub fn workspace_root_for(&self, file_id: FileId) -> Option<&Path> {
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let path = self.vfs.read().file2path(VfsFile(file_id.0));
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self.workspaces.iter().find_map(|ws| ws.workspace_root_for(&path))
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}
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}
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