oak_r/lsp/
mod.rs

1#![doc = include_str!("readme.md")]
2#[cfg(feature = "oak-highlight")]
3pub mod highlighter;
4
5#[cfg(feature = "lsp")]
6use futures::Future;
7#[cfg(feature = "lsp")]
8use oak_hover::{Hover, HoverProvider};
9#[cfg(feature = "lsp")]
10use oak_lsp::service::LanguageService;
11#[cfg(feature = "lsp")]
12use oak_vfs::Vfs;
13#[cfg(feature = "oak-pretty-print")]
14pub mod formatter;
15use crate::{language::RLanguage, lexer::token_type::RTokenType};
16use core::range::Range;
17use oak_core::tree::RedNode;
18#[cfg(feature = "lsp")]
19pub struct RHoverProvider;
20#[cfg(feature = "lsp")]
21impl HoverProvider<RLanguage> for RHoverProvider {
22    fn hover(&self, node: &RedNode<RLanguage>, _range: Range<usize>) -> Option<Hover> {
23        let kind = node.green.kind;
24        let contents = match kind {
25            RTokenType::FunctionDefinition => "### R Function\nDefines a callable block of code.",
26            _ => return None,
27        };
28        Some(Hover { contents: contents.to_string(), range: Some(node.span()) })
29    }
30}
31#[cfg(feature = "lsp")]
32pub struct RLanguageService<V: Vfs> {
33    vfs: V,
34    workspace: oak_lsp::workspace::WorkspaceManager,
35    hover_provider: RHoverProvider,
36}
37impl<V: Vfs> RLanguageService<V> {
38    pub fn new(vfs: V) -> Self {
39        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: RHoverProvider }
40    }
41}
42impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for RLanguageService<V> {
43    type Lang = RLanguage;
44    type Vfs = V;
45    fn vfs(&self) -> &Self::Vfs {
46        &self.vfs
47    }
48    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
49        &self.workspace
50    }
51    fn get_root(&self, uri: &str) -> impl Future<Output = Option<RedNode<'_, RLanguage>>> + Send + '_ {
52        let source = self.vfs().get_source(uri);
53        async move {
54            let source = source?;
55            let language = RLanguage::default();
56            let parser = crate::parser::RParser::new(&language);
57            let lexer = crate::lexer::RLexer::new(&language);
58            let mut cache = oak_core::parser::session::ParseSession::<RLanguage>::default();
59            let _output = oak_core::parser::parse(&parser, &lexer, &source, &[], &mut cache);
60            None
61        }
62    }
63    fn hover(&self, uri: &str, range: Range<usize>) -> impl Future<Output = Option<oak_lsp::Hover>> + Send + '_ {
64        let uri = uri.to_string();
65        async move { self.with_root(&uri, |root| self.hover_provider.hover(&root, range).map(|h| oak_lsp::Hover { contents: h.contents, range: h.range })).await.flatten() }
66    }
67}
oak_r/lsp/mod.rs

oak_r/lsp/
mod.rs
