oak_matlab/
lsp.rs

1use crate::{MatlabLanguage, kind::MatlabSyntaxKind};
2use core::range::Range;
3use oak_core::tree::RedNode;
4use oak_hover::HoverProvider;
5use oak_lsp::service::LanguageService;
6use oak_vfs::Vfs;
7use std::future::Future;
8
9pub use oak_hover::Hover;
10
11/// Hover provider implementation for MATLAB.
12pub struct MatlabHoverProvider;
13
14impl HoverProvider<MatlabLanguage> for MatlabHoverProvider {
15    fn hover(&self, node: &RedNode<MatlabLanguage>, _range: Range<usize>) -> Option<oak_hover::Hover> {
16        let kind = node.green.kind;
17
18        let contents = match kind {
19            MatlabSyntaxKind::FunctionDef => "### MATLAB Function\nDefines a reusable function block.",
20            MatlabSyntaxKind::ClassDef => "### MATLAB Class\nDefines a class for object-oriented programming.",
21            MatlabSyntaxKind::Script => "### MATLAB Script\nA file containing a sequence of MATLAB commands.",
22            _ => return None,
23        };
24
25        Some(oak_hover::Hover { contents: contents.to_string(), range: Some(node.span()) })
26    }
27}
28
29/// Language service implementation for MATLAB.
30pub struct MatlabLanguageService<V: Vfs> {
31    vfs: V,
32    workspace: oak_lsp::workspace::WorkspaceManager,
33    hover_provider: MatlabHoverProvider,
34}
35
36impl<V: Vfs> MatlabLanguageService<V> {
37    pub fn new(vfs: V) -> Self {
38        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: MatlabHoverProvider }
39    }
40}
41
42impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for MatlabLanguageService<V> {
43    type Lang = MatlabLanguage;
44    type Vfs = V;
45
46    fn vfs(&self) -> &Self::Vfs {
47        &self.vfs
48    }
49
50    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
51        &self.workspace
52    }
53
54    fn get_root(&self, uri: &str) -> impl Future<Output = Option<RedNode<'_, MatlabLanguage>>> + Send + '_ {
55        let source = self.get_source(uri);
56        async move {
57            let source = source?;
58            let language = MatlabLanguage::default();
59            let lexer = crate::lexer::MatlabLexer::new(&language);
60            let parser = crate::parser::MatlabParser::new(&language);
61
62            let mut cache = Box::new(oak_core::parser::ParseSession::<MatlabLanguage>::default());
63            let cache_ptr: *mut oak_core::parser::ParseSession<MatlabLanguage> = &mut *cache;
64
65            let output = oak_core::parser::parse(&parser, &lexer, &source, &[], unsafe { &mut *cache_ptr }).result.ok()?;
66
67            let _leaked_cache = Box::leak(cache);
68            let green_static: &'static oak_core::GreenNode<MatlabLanguage> = unsafe { std::mem::transmute(output) };
69
70            Some(RedNode::new(green_static, 0))
71        }
72    }
73
74    fn hover(&self, uri: &str, range: Range<usize>) -> impl Future<Output = Option<oak_lsp::types::Hover>> + Send + '_ {
75        let uri = uri.to_string();
76        async move {
77            let hover = self.with_root(&uri, |root| self.hover_provider.hover(&root, range)).await.flatten()?;
78            Some(oak_lsp::types::Hover { contents: hover.contents, range: hover.range })
79        }
80    }
81}
oak_matlab/lsp.rs

oak_matlab/
lsp.rs
