oak_msil/lsp/
mod.rs

1#![doc = include_str!("readme.md")]
2#[cfg(feature = "oak-highlight")]
3pub mod highlighter;
4
5use crate::{MsilLanguage, parser::element_type::MsilElementType};
6use core::range::Range;
7use oak_core::tree::RedNode;
8#[cfg(feature = "lsp")]
9use {
10    oak_hover::HoverProvider,
11    oak_lsp::{service::LanguageService, types::Hover},
12    oak_vfs::Vfs,
13    std::future::Future,
14};
15/// Hover provider implementation for MSIL.
16#[cfg(feature = "lsp")]
17pub struct MsilHoverProvider;
18#[cfg(feature = "lsp")]
19impl HoverProvider<MsilLanguage> for MsilHoverProvider {
20    fn hover(&self, node: &RedNode<MsilLanguage>, _range: Range<usize>) -> Option<oak_hover::Hover> {
21        let kind = node.green.kind;
22        let contents = match kind {
23            MsilElementType::Method => "### MSIL Method\nDefines a method in MSIL.",
24            MsilElementType::Class => "### MSIL Class\nDefines a class in MSIL.",
25            MsilElementType::Assembly => "### MSIL Assembly\nDefines an assembly in MSIL.",
26            MsilElementType::Instruction => "### MSIL Instruction\nA single MSIL instruction.",
27            _ => return None,
28        };
29        Some(oak_hover::Hover { contents: contents.to_string(), range: Some(node.span()) })
30    }
31}
32/// Language service implementation for MSIL.
33#[cfg(feature = "lsp")]
34pub struct MsilLanguageService<V: Vfs> {
35    vfs: V,
36    workspace: oak_lsp::workspace::WorkspaceManager,
37    hover_provider: MsilHoverProvider,
38}
39#[cfg(feature = "lsp")]
40impl<V: Vfs> MsilLanguageService<V> {
41    /// Create new MSIL language service
42    pub fn new(vfs: V) -> Self {
43        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: MsilHoverProvider }
44    }
45}
46#[cfg(feature = "lsp")]
47impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for MsilLanguageService<V> {
48    type Lang = MsilLanguage;
49    type Vfs = V;
50    fn vfs(&self) -> &Self::Vfs {
51        &self.vfs
52    }
53    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
54        &self.workspace
55    }
56    fn get_root(&self, uri: &str) -> impl Future<Output = Option<RedNode<'_, MsilLanguage>>> + Send + '_ {
57        let source = self.vfs().get_source(uri);
58        async move {
59            let source = source?;
60            let language = MsilLanguage::new();
61            let parser = crate::parser::MsilParser::new(&language);
62            let lexer = crate::lexer::MsilLexer::new(&language);
63            let mut cache = Box::new(oak_core::parser::session::ParseSession::<MsilLanguage>::default());
64            let cache_ptr: *mut oak_core::parser::session::ParseSession<MsilLanguage> = &mut *cache;
65            let parse_out = oak_core::parser::parse(&parser, &lexer, &source, &[], unsafe { &mut *cache_ptr });
66            let green = parse_out.result.ok()?;
67            let _leaked_cache = Box::leak(cache);
68            let green_static: &'static oak_core::GreenNode<MsilLanguage> = unsafe { std::mem::transmute(green) };
69            Some(RedNode::new(green_static, 0))
70        }
71    }
72    fn hover(&self, uri: &str, range: Range<usize>) -> impl Future<Output = Option<Hover>> + Send + '_ {
73        let uri = uri.to_string();
74        async move { self.with_root(&uri, |root| self.hover_provider.hover(&root, range).map(|h| Hover { contents: h.contents, range: h.range })).await.flatten() }
75    }
76}
oak_msil/lsp/mod.rs

oak_msil/lsp/
mod.rs
