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|
use std::{
path::PathBuf,
sync::Arc,
};
use languageserver_types::Url;
use ra_ide_api::{
Analysis, AnalysisChange, AnalysisHost, CrateGraph, FileId, LibraryData,
SourceRootId
};
use ra_vfs::{Vfs, VfsChange, VfsFile, VfsRoot};
use rustc_hash::FxHashMap;
use relative_path::RelativePathBuf;
use parking_lot::RwLock;
use failure::format_err;
use crate::{
project_model::{ProjectWorkspace, TargetKind},
Result,
};
#[derive(Debug)]
pub struct ServerWorldState {
pub roots_to_scan: usize,
pub root: PathBuf,
pub workspaces: Arc<Vec<ProjectWorkspace>>,
pub analysis_host: AnalysisHost,
pub vfs: Arc<RwLock<Vfs>>,
}
pub struct ServerWorld {
pub workspaces: Arc<Vec<ProjectWorkspace>>,
pub analysis: Analysis,
pub vfs: Arc<RwLock<Vfs>>,
}
impl ServerWorldState {
pub fn new(root: PathBuf, workspaces: Vec<ProjectWorkspace>) -> ServerWorldState {
let mut change = AnalysisChange::new();
let mut roots = Vec::new();
roots.push(root.clone());
for ws in workspaces.iter() {
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())
}
}
roots.sort();
roots.dedup();
let roots_to_scan = roots.len();
let (mut vfs, roots) = Vfs::new(roots);
for r in roots {
let is_local = vfs.root2path(r).starts_with(&root);
change.add_root(SourceRootId(r.0.into()), is_local);
}
let mut crate_graph = CrateGraph::default();
for ws in workspaces.iter() {
// First, load std
let mut sysroot_crates = FxHashMap::default();
for krate in ws.sysroot.crates() {
if let Some(file_id) = vfs.load(krate.root(&ws.sysroot)) {
let file_id = FileId(file_id.0.into());
sysroot_crates.insert(krate, crate_graph.add_crate_root(file_id));
}
}
for from in ws.sysroot.crates() {
for to in from.deps(&ws.sysroot) {
let name = to.name(&ws.sysroot);
if let (Some(&from), Some(&to)) =
(sysroot_crates.get(&from), sysroot_crates.get(&to))
{
crate_graph.add_dep(from, name.clone(), to);
}
}
}
let libstd = ws
.sysroot
.std()
.and_then(|it| sysroot_crates.get(&it).map(|&it| it));
let mut pkg_to_lib_crate = FxHashMap::default();
let mut pkg_crates = FxHashMap::default();
// Next, create crates for each package, target pair
for pkg in ws.cargo.packages() {
let mut lib_tgt = None;
for tgt in pkg.targets(&ws.cargo) {
let root = tgt.root(&ws.cargo);
if let Some(file_id) = vfs.load(root) {
let file_id = FileId(file_id.0.into());
let crate_id = crate_graph.add_crate_root(file_id);
if tgt.kind(&ws.cargo) == TargetKind::Lib {
lib_tgt = Some(crate_id);
pkg_to_lib_crate.insert(pkg, crate_id);
}
pkg_crates
.entry(pkg)
.or_insert_with(Vec::new)
.push(crate_id);
}
}
// Set deps to the std and to the lib target of the current package
for &from in pkg_crates.get(&pkg).into_iter().flatten() {
if let Some(to) = lib_tgt {
if to != from {
crate_graph.add_dep(from, pkg.name(&ws.cargo).into(), to);
}
}
if let Some(std) = libstd {
crate_graph.add_dep(from, "std".into(), std);
}
}
}
// Now add a dep ednge from all targets of upstream to the lib
// target of downstream.
for pkg in ws.cargo.packages() {
for dep in pkg.dependencies(&ws.cargo) {
if let Some(&to) = pkg_to_lib_crate.get(&dep.pkg) {
for &from in pkg_crates.get(&pkg).into_iter().flatten() {
crate_graph.add_dep(from, dep.name.clone(), to);
}
}
}
}
}
change.set_crate_graph(crate_graph);
let mut analysis_host = AnalysisHost::default();
analysis_host.apply_change(change);
ServerWorldState {
roots_to_scan,
root,
workspaces: Arc::new(workspaces),
analysis_host,
vfs: Arc::new(RwLock::new(vfs)),
}
}
/// Returns a vec of libraries
/// FIXME: better API here
pub fn process_changes(
&mut self,
) -> Vec<(SourceRootId, Vec<(FileId, RelativePathBuf, Arc<String>)>)> {
let changes = self.vfs.write().commit_changes();
if changes.is_empty() {
return Vec::new();
}
let mut libs = Vec::new();
let mut change = AnalysisChange::new();
for c in changes {
match c {
VfsChange::AddRoot { root, files } => {
let root_path = self.vfs.read().root2path(root);
if root_path.starts_with(&self.root) {
self.roots_to_scan -= 1;
for (file, path, text) in files {
change.add_file(
SourceRootId(root.0.into()),
FileId(file.0.into()),
path,
text,
);
}
} else {
let files = files
.into_iter()
.map(|(vfsfile, path, text)| (FileId(vfsfile.0.into()), path, text))
.collect();
libs.push((SourceRootId(root.0.into()), files));
}
}
VfsChange::AddFile {
root,
file,
path,
text,
} => {
change.add_file(
SourceRootId(root.0.into()),
FileId(file.0.into()),
path,
text,
);
}
VfsChange::RemoveFile { root, file, path } => {
change.remove_file(SourceRootId(root.0.into()), FileId(file.0.into()), path)
}
VfsChange::ChangeFile { file, text } => {
change.change_file(FileId(file.0.into()), text);
}
}
}
self.analysis_host.apply_change(change);
libs
}
pub fn add_lib(&mut self, data: LibraryData) {
self.roots_to_scan -= 1;
let mut change = AnalysisChange::new();
change.add_library(data);
self.analysis_host.apply_change(change);
}
pub fn snapshot(&self) -> ServerWorld {
ServerWorld {
workspaces: Arc::clone(&self.workspaces),
analysis: self.analysis_host.analysis(),
vfs: Arc::clone(&self.vfs),
}
}
}
impl ServerWorld {
pub fn analysis(&self) -> &Analysis {
&self.analysis
}
pub fn uri_to_file_id(&self, uri: &Url) -> Result<FileId> {
let path = uri
.to_file_path()
.map_err(|()| format_err!("invalid uri: {}", uri))?;
let file = self
.vfs
.read()
.path2file(&path)
.ok_or_else(|| format_err!("unknown file: {}", path.display()))?;
Ok(FileId(file.0.into()))
}
pub fn file_id_to_uri(&self, id: FileId) -> Result<Url> {
let path = self.vfs.read().file2path(VfsFile(id.0.into()));
let url = Url::from_file_path(&path)
.map_err(|_| format_err!("can't convert path to url: {}", path.display()))?;
Ok(url)
}
pub fn path_to_uri(&self, root: SourceRootId, path: &RelativePathBuf) -> Result<Url> {
let base = self.vfs.read().root2path(VfsRoot(root.0.into()));
let path = path.to_path(base);
let url = Url::from_file_path(&path)
.map_err(|_| format_err!("can't convert path to url: {}", path.display()))?;
Ok(url)
}
}
|
