oak_msil/
lsp.rs

1use crate::{MsilLanguage, kind::MsilSyntaxKind};
2use core::range::Range;
3use oak_core::tree::RedNode;
4use oak_hover::HoverProvider;
5use oak_lsp::{service::LanguageService, types::Hover};
6use oak_vfs::Vfs;
7use std::future::Future;
8
9/// Hover provider implementation for MSIL.
10pub struct MsilHoverProvider;
11
12impl HoverProvider<MsilLanguage> for MsilHoverProvider {
13    fn hover(&self, node: &RedNode<MsilLanguage>, _range: Range<usize>) -> Option<oak_hover::Hover> {
14        let kind = node.green.kind;
15
16        let contents = match kind {
17            MsilSyntaxKind::Method => "### MSIL Method\nDefines a method in MSIL.",
18            MsilSyntaxKind::Class => "### MSIL Class\nDefines a class in MSIL.",
19            MsilSyntaxKind::Assembly => "### MSIL Assembly\nDefines an assembly in MSIL.",
20            MsilSyntaxKind::Instruction => "### MSIL Instruction\nA single MSIL instruction.",
21            _ => return None,
22        };
23
24        Some(oak_hover::Hover { contents: contents.to_string(), range: Some(node.span()) })
25    }
26}
27
28/// Language service implementation for MSIL.
29pub struct MsilLanguageService<V: Vfs> {
30    vfs: V,
31    workspace: oak_lsp::workspace::WorkspaceManager,
32    hover_provider: MsilHoverProvider,
33}
34
35impl<V: Vfs> MsilLanguageService<V> {
36    pub fn new(vfs: V) -> Self {
37        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: MsilHoverProvider }
38    }
39}
40
41impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for MsilLanguageService<V> {
42    type Lang = MsilLanguage;
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<'_, MsilLanguage>>> + Send + '_ {
54        let source = self.vfs().get_source(uri);
55        async move {
56            let source = source?;
57            let language = MsilLanguage::new();
58            let parser = crate::parser::MsilParser::new(&language);
59            let lexer = crate::lexer::MsilLexer::new(&language);
60
61            let mut cache = Box::new(oak_core::parser::session::ParseSession::<MsilLanguage>::default());
62            let cache_ptr: *mut oak_core::parser::session::ParseSession<MsilLanguage> = &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<MsilLanguage> = 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<Hover>> + Send + '_ {
75        let uri = uri.to_string();
76        async move { self.with_root(&uri, |root| self.hover_provider.hover(&root, range).map(|h| Hover { contents: h.contents, range: h.range })).await.flatten() }
77    }
78}
oak_msil/lsp.rs

oak_msil/
lsp.rs
