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|
use std::{
fs,
path::{PathBuf, Path},
sync::Arc,
};
use rustc_hash::FxHashMap;
use languageserver_types::Url;
use ra_analysis::{FileId, AnalysisHost, Analysis, CrateGraph, CrateId, LibraryData, FileResolver};
use crate::{
Result,
path_map::{PathMap, Root},
vfs::{FileEvent, FileEventKind},
project_model::CargoWorkspace,
};
#[derive(Debug)]
pub struct ServerWorldState {
pub workspaces: Arc<Vec<CargoWorkspace>>,
pub analysis_host: AnalysisHost,
pub path_map: PathMap,
pub mem_map: FxHashMap<FileId, Option<String>>,
}
#[derive(Clone)]
pub struct ServerWorld {
pub workspaces: Arc<Vec<CargoWorkspace>>,
pub analysis: Analysis,
pub path_map: PathMap,
}
impl ServerWorldState {
pub fn new() -> ServerWorldState {
ServerWorldState {
workspaces: Arc::new(Vec::new()),
analysis_host: AnalysisHost::new(),
path_map: PathMap::new(),
mem_map: FxHashMap::default(),
}
}
pub fn apply_fs_changes(&mut self, events: Vec<FileEvent>) {
{
let pm = &mut self.path_map;
let mm = &mut self.mem_map;
let changes = events.into_iter()
.map(|event| {
let text = match event.kind {
FileEventKind::Add(text) => Some(text),
};
(event.path, text)
})
.map(|(path, text)| {
(pm.get_or_insert(path, Root::Workspace), text)
})
.filter_map(|(id, text)| {
if mm.contains_key(&id) {
mm.insert(id, text);
None
} else {
Some((id, text))
}
});
self.analysis_host.change_files(changes);
}
self.analysis_host.set_file_resolver(Arc::new(self.path_map.clone()));
}
pub fn events_to_files(&mut self, events: Vec<FileEvent>) -> (Vec<(FileId, String)>, Arc<FileResolver>) {
let files = {
let pm = &mut self.path_map;
events.into_iter()
.map(|event| {
let text = match event.kind {
FileEventKind::Add(text) => text,
};
(event.path, text)
})
.map(|(path, text)| (pm.get_or_insert(path, Root::Lib), text))
.collect()
};
let resolver = Arc::new(self.path_map.clone());
(files, resolver)
}
pub fn add_lib(&mut self, data: LibraryData) {
self.analysis_host.add_library(data);
}
pub fn add_mem_file(&mut self, path: PathBuf, text: String) -> FileId {
let file_id = self.path_map.get_or_insert(path, Root::Workspace);
self.analysis_host.set_file_resolver(Arc::new(self.path_map.clone()));
self.mem_map.insert(file_id, None);
if self.path_map.get_root(file_id) != Root::Lib {
self.analysis_host.change_file(file_id, Some(text));
}
file_id
}
pub fn change_mem_file(&mut self, path: &Path, text: String) -> Result<()> {
let file_id = self.path_map.get_id(path).ok_or_else(|| {
format_err!("change to unknown file: {}", path.display())
})?;
if self.path_map.get_root(file_id) != Root::Lib {
self.analysis_host.change_file(file_id, Some(text));
}
Ok(())
}
pub fn remove_mem_file(&mut self, path: &Path) -> Result<FileId> {
let file_id = self.path_map.get_id(path).ok_or_else(|| {
format_err!("change to unknown file: {}", path.display())
})?;
match self.mem_map.remove(&file_id) {
Some(_) => (),
None => bail!("unmatched close notification"),
};
// Do this via file watcher ideally.
let text = fs::read_to_string(path).ok();
if self.path_map.get_root(file_id) != Root::Lib {
self.analysis_host.change_file(file_id, text);
}
Ok(file_id)
}
pub fn set_workspaces(&mut self, ws: Vec<CargoWorkspace>) {
let mut crate_roots = FxHashMap::default();
ws.iter()
.flat_map(|ws| {
ws.packages()
.flat_map(move |pkg| pkg.targets(ws))
.map(move |tgt| tgt.root(ws))
})
.for_each(|root| {
if let Some(file_id) = self.path_map.get_id(root) {
let crate_id = CrateId(crate_roots.len() as u32);
crate_roots.insert(crate_id, file_id);
}
});
let crate_graph = CrateGraph { crate_roots };
self.workspaces = Arc::new(ws);
self.analysis_host.set_crate_graph(crate_graph);
}
pub fn snapshot(&self) -> ServerWorld {
ServerWorld {
workspaces: Arc::clone(&self.workspaces),
analysis: self.analysis_host.analysis(),
path_map: self.path_map.clone()
}
}
}
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))?;
self.path_map.get_id(&path).ok_or_else(|| format_err!("unknown file: {}", path.display()))
}
pub fn file_id_to_uri(&self, id: FileId) -> Result<Url> {
let path = self.path_map.get_path(id);
let url = Url::from_file_path(path)
.map_err(|()| format_err!("can't convert path to url: {}", path.display()))?;
Ok(url)
}
}
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