oak_apl/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::{language::AplLanguage, parser::AplElementType};
15use core::range::Range;
16use oak_core::tree::RedNode;
17/// Hover provider implementation for APL.
18#[cfg(feature = "lsp")]
19pub struct AplHoverProvider;
20#[cfg(feature = "lsp")]
21impl HoverProvider<AplLanguage> for AplHoverProvider {
22    fn hover(&self, node: &RedNode<AplLanguage>, _range: Range<usize>) -> Option<Hover> {
23        let kind = node.green.kind;
24        // Provide context-aware hover information
25        let contents = match kind {
26            AplElementType::Assignment => "### APL Assignment\nAssigns a value to a variable.",
27            AplElementType::ArrayLiteral => "### APL Array\nA collection of values.",
28            _ => return None,
29        };
30        Some(Hover { contents: contents.to_string(), range: Some(node.span()) })
31    }
32}
33/// Language service implementation for APL.
34#[cfg(feature = "lsp")]
35pub struct AplLanguageService<V: Vfs> {
36    vfs: V,
37    workspace: oak_lsp::workspace::WorkspaceManager,
38    hover_provider: AplHoverProvider,
39}
40#[cfg(feature = "lsp")]
41impl<V: Vfs> AplLanguageService<V> {
42    /// Creates a new `AplLanguageService`.
43    pub fn new(vfs: V) -> Self {
44        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: AplHoverProvider }
45    }
46}
47#[cfg(feature = "lsp")]
48impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for AplLanguageService<V> {
49    type Lang = AplLanguage;
50    type Vfs = V;
51    fn vfs(&self) -> &Self::Vfs {
52        &self.vfs
53    }
54    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
55        &self.workspace
56    }
57    fn get_root(&self, uri: &str) -> impl Future<Output = Option<RedNode<'_, AplLanguage>>> + Send + '_ {
58        let source = self.vfs().get_source(uri);
59        async move {
60            let source = source?;
61            let language = AplLanguage::default();
62            let parser = crate::parser::AplParser::new(&language);
63            let lexer = crate::lexer::AplLexer::new(&language);
64            let mut cache = Box::new(oak_core::parser::session::ParseSession::<AplLanguage>::default());
65            let cache_ptr: *mut oak_core::parser::session::ParseSession<AplLanguage> = &mut *cache;
66            let parse_out = oak_core::parser::parse(&parser, &lexer, &source, &[], unsafe { &mut *cache_ptr });
67            let green = parse_out.result.ok()?;
68            let _leaked_cache = Box::leak(cache);
69            let green_static: &'static oak_core::GreenNode<AplLanguage> = unsafe { std::mem::transmute(green) };
70            Some(RedNode::new(green_static, 0))
71        }
72    }
73    fn hover(&self, uri: &str, range: Range<usize>) -> impl Future<Output = Option<oak_lsp::Hover>> + Send + '_ {
74        let uri = uri.to_string();
75        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() }
76    }
77}
oak_apl/lsp/mod.rs

oak_apl/lsp/
mod.rs
