oak_ada/lsp/
mod.rs

1#![doc = include_str!("readme.md")]
2#[cfg(feature = "oak-highlight")]
3pub mod highlighter;
4
5#[cfg(feature = "lsp")]
6use {
7    futures::Future,
8    oak_hover::{Hover, HoverProvider},
9    oak_lsp::service::LanguageService,
10    oak_vfs::Vfs,
11};
12#[cfg(feature = "oak-pretty-print")]
13pub mod formatter;
14use crate::{AdaLanguage, parser::AdaElementType};
15use core::range::Range;
16use oak_core::tree::RedNode;
17/// Hover provider implementation for Ada.
18#[cfg(feature = "lsp")]
19pub struct AdaHoverProvider;
20#[cfg(feature = "lsp")]
21impl HoverProvider<AdaLanguage> for AdaHoverProvider {
22    fn hover(&self, node: &RedNode<AdaLanguage>, _range: Range<usize>) -> Option<Hover> {
23        let kind = node.green.kind;
24        // Provide context-aware hover information
25        let contents = match kind {
26            AdaElementType::SubprogramDeclaration => "### Ada Subprogram\nDefines a procedure or function.",
27            AdaElementType::PackageDeclaration => "### Ada Package\nDefines a module of code.",
28            _ => return None,
29        };
30        Some(Hover { contents: contents.to_string(), range: Some(node.span()) })
31    }
32}
33/// Language service implementation for Ada.
34#[cfg(feature = "lsp")]
35pub struct AdaLanguageService<V: Vfs> {
36    vfs: V,
37    workspace: oak_lsp::workspace::WorkspaceManager,
38    hover_provider: AdaHoverProvider,
39}
40impl<V: Vfs> AdaLanguageService<V> {
41    /// Creates a new `AdaLanguageService`.
42    pub fn new(vfs: V) -> Self {
43        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: AdaHoverProvider }
44    }
45}
46impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for AdaLanguageService<V> {
47    type Lang = AdaLanguage;
48    type Vfs = V;
49    fn vfs(&self) -> &Self::Vfs {
50        &self.vfs
51    }
52    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
53        &self.workspace
54    }
55    fn get_root(&self, uri: &str) -> impl Future<Output = Option<RedNode<'_, AdaLanguage>>> + Send + '_ {
56        let source = self.vfs().get_source(uri);
57        async move {
58            let source = source?;
59            let language = AdaLanguage::default();
60            let parser = crate::parser::AdaParser::new(&language);
61            let lexer = crate::lexer::AdaLexer::new(&language);
62            let mut cache = Box::new(oak_core::parser::session::ParseSession::<AdaLanguage>::default());
63            let cache_ptr: *mut oak_core::parser::session::ParseSession<AdaLanguage> = &mut *cache;
64            let parse_out = oak_core::parser::parse(&parser, &lexer, &source, &[], unsafe { &mut *cache_ptr });
65            let green = parse_out.result.ok()?;
66            let _leaked_cache = Box::leak(cache);
67            let green_static: &'static oak_core::GreenNode<AdaLanguage> = unsafe { std::mem::transmute(green) };
68            Some(RedNode::new(green_static, 0))
69        }
70    }
71    fn hover(&self, uri: &str, range: Range<usize>) -> impl Future<Output = Option<oak_lsp::Hover>> + Send + '_ {
72        let uri = uri.to_string();
73        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() }
74    }
75}
oak_ada/lsp/mod.rs

oak_ada/lsp/
mod.rs
