oak_perl/
lsp.rs

1use crate::{PerlLanguage, kind::PerlSyntaxKind};
2use core::range::Range;
3use oak_core::tree::RedNode;
4use oak_hover::{Hover as ProviderHover, HoverProvider};
5use oak_lsp::{service::LanguageService, types::Hover as LspHover};
6use oak_vfs::Vfs;
7
8/// Hover provider implementation for Perl.
9pub struct PerlHoverProvider;
10
11impl HoverProvider<PerlLanguage> for PerlHoverProvider {
12    fn hover(&self, node: &RedNode<PerlLanguage>, _range: Range<usize>) -> Option<ProviderHover> {
13        let kind = node.green.kind;
14
15        let contents = match kind {
16            PerlSyntaxKind::SubroutineDeclaration => "### Perl Subroutine\nA named block of code that can be called.",
17            PerlSyntaxKind::PackageDeclaration => "### Perl Package\nDefines a namespace for the code.",
18            PerlSyntaxKind::VariableDeclaration => "### Perl Variable\nA variable declared with `my`, `our`, or `local`.",
19            PerlSyntaxKind::IfStatement => "### If Statement\nConditional execution block.",
20            _ => return None,
21        };
22
23        Some(ProviderHover { contents: contents.to_string(), range: Some(node.span()) })
24    }
25}
26
27/// Language service implementation for Perl.
28pub struct PerlLanguageService<V: Vfs> {
29    vfs: V,
30    workspace: oak_lsp::workspace::WorkspaceManager,
31    hover_provider: PerlHoverProvider,
32}
33
34impl<V: Vfs> PerlLanguageService<V> {
35    pub fn new(vfs: V) -> Self {
36        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: PerlHoverProvider }
37    }
38}
39
40impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for PerlLanguageService<V> {
41    type Lang = PerlLanguage;
42    type Vfs = V;
43
44    fn vfs(&self) -> &Self::Vfs {
45        &self.vfs
46    }
47
48    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
49        &self.workspace
50    }
51
52    fn get_root(&self, uri: &str) -> impl futures::Future<Output = Option<RedNode<'_, PerlLanguage>>> + Send + '_ {
53        let _source = self.get_source(uri);
54        async move {
55            // TODO: Implement proper caching of parsed trees in LanguageService
56            None
57        }
58    }
59
60    fn hover(&self, uri: &str, range: Range<usize>) -> impl futures::Future<Output = Option<LspHover>> + Send + '_ {
61        let uri = uri.to_string();
62        async move { self.with_root(&uri, |root| self.hover_provider.hover(&root, range).map(|h| LspHover { contents: h.contents, range: h.range })).await.flatten() }
63    }
64}
oak_perl/lsp.rs

oak_perl/
lsp.rs
