oak_toml/
lsp.rs

1use crate::{kind::TomlTokenKind, language::TomlLanguage};
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 for TOML.
9pub struct TomlHoverProvider;
10
11impl HoverProvider<TomlLanguage> for TomlHoverProvider {
12    fn hover(&self, node: &RedNode<'_, TomlLanguage>, _range: Range<usize>) -> Option<ProviderHover> {
13        let kind = node.green.kind;
14
15        let contents = match kind {
16            TomlTokenKind::Key => "### TOML Key\nConfiguration key identifier.",
17            TomlTokenKind::Table => "### TOML Table\nDefines a section of configuration.",
18            TomlTokenKind::ArrayOfTables => "### TOML Array of Tables\nDefines a collection of table sections.",
19            _ => return None,
20        };
21
22        Some(ProviderHover { contents: contents.to_string(), range: Some(node.span()) })
23    }
24}
25
26pub struct TomlLanguageService<V: Vfs> {
27    vfs: V,
28    workspace: oak_lsp::workspace::WorkspaceManager,
29    hover_provider: TomlHoverProvider,
30}
31
32impl<V: Vfs> TomlLanguageService<V> {
33    pub fn new(vfs: V) -> Self {
34        Self { vfs, workspace: oak_lsp::workspace::WorkspaceManager::default(), hover_provider: TomlHoverProvider }
35    }
36}
37
38impl<V: Vfs + Send + Sync + 'static + oak_vfs::WritableVfs> LanguageService for TomlLanguageService<V> {
39    type Lang = TomlLanguage;
40    type Vfs = V;
41
42    fn vfs(&self) -> &Self::Vfs {
43        &self.vfs
44    }
45
46    fn workspace(&self) -> &oak_lsp::workspace::WorkspaceManager {
47        &self.workspace
48    }
49
50    fn get_root(&self, uri: &str) -> impl futures::Future<Output = Option<RedNode<'_, TomlLanguage>>> + Send + '_ {
51        let _source = self.get_source(uri);
52        async move {
53            // TODO: Implement proper caching of parsed trees in LanguageService
54            // For now return None to fix compilation errors
55            None
56        }
57    }
58
59    fn hover(&self, uri: &str, range: Range<usize>) -> impl futures::Future<Output = Option<LspHover>> + Send + '_ {
60        let uri = uri.to_string();
61        async move {
62            self.with_root(&uri, |root| {
63                use oak_core::tree::RedTree;
64                let node = match root.child_at_offset(range.start) {
65                    Some(RedTree::Node(n)) => n,
66                    _ => root,
67                };
68                self.hover_provider.hover(&node, range).map(|h| LspHover { contents: h.contents, range: h.range })
69            })
70            .await
71            .flatten()
72        }
73    }
74}
oak_toml/lsp.rs

oak_toml/
lsp.rs
