oak_ada/
lsp.rs

1use crate::{AdaLanguage, parser::AdaElementType};
2use core::range::Range;
3use futures::Future;
4use oak_core::tree::RedNode;
5use oak_hover::{Hover, HoverProvider};
6use oak_lsp::service::LanguageService;
7use oak_vfs::Vfs;
8
9/// Hover provider implementation for Ada.
10pub struct AdaHoverProvider;
11
12impl HoverProvider<AdaLanguage> for AdaHoverProvider {
13    fn hover(&self, node: &RedNode<AdaLanguage>, _range: Range<usize>) -> Option<Hover> {
14        let kind = node.green.kind;
15
16        // Provide context-aware hover information
17        let contents = match kind {
18            AdaElementType::SubprogramDeclaration => "### Ada Subprogram\nDefines a procedure or function.",
19            AdaElementType::PackageDeclaration => "### Ada Package\nDefines a module of code.",
20            _ => return None,
21        };
22
23        Some(Hover { contents: contents.to_string(), range: Some(node.span()) })
24    }
25}
26
27/// Language service implementation for Ada.
28pub struct AdaLanguageService<V: Vfs> {
29    vfs: V,
30    workspace: oak_lsp::workspace::WorkspaceManager,
31    hover_provider: AdaHoverProvider,
32}
33
34impl<V: Vfs> AdaLanguageService<V> {
35    /// Creates a new `AdaLanguageService`.
36    pub fn new(vfs: V) -> Self {
37        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: AdaHoverProvider }
38    }
39}
40
41impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for AdaLanguageService<V> {
42    type Lang = AdaLanguage;
43    type Vfs = V;
44
45    fn vfs(&self) -> &Self::Vfs {
46        &self.vfs
47    }
48
49    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
50        &self.workspace
51    }
52
53    fn get_root(&self, uri: &str) -> impl Future<Output = Option<RedNode<'_, AdaLanguage>>> + Send + '_ {
54        let source = self.vfs().get_source(uri);
55        async move {
56            let source = source?;
57            let language = AdaLanguage::default();
58            let parser = crate::parser::AdaParser::new(&language);
59            let lexer = crate::lexer::AdaLexer::new(&language);
60
61            let mut cache = Box::new(oak_core::parser::session::ParseSession::<AdaLanguage>::default());
62            let cache_ptr: *mut oak_core::parser::session::ParseSession<AdaLanguage> = &mut *cache;
63
64            let parse_out = oak_core::parser::parse(&parser, &lexer, &source, &[], unsafe { &mut *cache_ptr });
65            let green = parse_out.result.ok()?;
66
67            let _leaked_cache = Box::leak(cache);
68            let green_static: &'static oak_core::GreenNode<AdaLanguage> = unsafe { std::mem::transmute(green) };
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::Hover>> + Send + '_ {
75        let uri = uri.to_string();
76        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() }
77    }
78}
oak_ada/lsp.rs

oak_ada/
lsp.rs
