language-servers/rust-analyzer
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add hover

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This commit is contained in:
hamidreza kalbasi 2021-09-10 20:00:53 +04:30
parent 1103e390e0
commit e803bd25c4
4 changed files with 108 additions and 49 deletions
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63
crates/ide/src/static_index.rs
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@ -2,11 +2,13 @@
//! read-only code browsers and emitting LSIF
use hir::{db::HirDatabase, Crate, Module};
use ide_db::base_db::{FileId, SourceDatabaseExt};
use ide_db::base_db::{FileId, FileRange, SourceDatabaseExt};
use ide_db::RootDatabase;
use rustc_hash::FxHashSet;
use syntax::TextRange;
use syntax::{AstNode, SyntaxKind::*, T};
use crate::{Analysis, Cancellable, Fold};
use crate::{Analysis, Cancellable, Fold, HoverConfig, HoverDocFormat, HoverResult};
/// A static representation of fully analyzed source code.
///
@ -15,9 +17,15 @@ pub struct StaticIndex {
pub files: Vec<StaticIndexedFile>,
}
pub struct TokenStaticData {
pub range: TextRange,
pub hover: Option<HoverResult>,
}
pub struct StaticIndexedFile {
pub file_id: FileId,
pub folds: Vec<Fold>,
pub tokens: Vec<TokenStaticData>,
}
fn all_modules(db: &dyn HirDatabase) -> Vec<Module> {
@ -46,17 +54,48 @@ impl StaticIndex {
let mut result_files = Vec::<StaticIndexedFile>::new();
for module in work {
let file_id = module.definition_source(db).file_id.original_file(db);
if !visited_files.contains(&file_id) {
//let path = vfs.file_path(file_id);
//let path = path.as_path().unwrap();
//let doc_id = lsif.add(Element::Vertex(Vertex::Document(Document {
// language_id: Language::Rust,
// uri: lsp_types::Url::from_file_path(path).unwrap(),
//})));
let folds = analysis.folding_ranges(file_id)?;
result_files.push(StaticIndexedFile { file_id, folds });
visited_files.insert(file_id);
if visited_files.contains(&file_id) {
continue;
}
let folds = analysis.folding_ranges(file_id)?;
// hovers
let sema = hir::Semantics::new(db);
let tokens_or_nodes = sema.parse(file_id).syntax().clone();
let tokens = tokens_or_nodes.descendants_with_tokens().filter_map(|x| match x {
syntax::NodeOrToken::Node(_) => None,
syntax::NodeOrToken::Token(x) => Some(x),
});
let hover_config =
HoverConfig { links_in_hover: true, documentation: Some(HoverDocFormat::Markdown) };
let tokens = tokens
.filter(|token| match token.kind() {
IDENT
| INT_NUMBER
| LIFETIME_IDENT
| T![self]
| T![super]
| T![crate]
| T!['(']
| T![')'] => true,
_ => false,
})
.map(|token| {
let range = token.text_range();
let hover = analysis
.hover(
&hover_config,
FileRange {
file_id,
range: TextRange::new(range.start(), range.start()),
},
)?
.map(|x| x.info);
Ok(TokenStaticData { range, hover })
})
.collect::<Result<Vec<_>, _>>()?;
result_files.push(StaticIndexedFile { file_id, folds, tokens });
// mark the file
visited_files.insert(file_id);
}
Ok(StaticIndex { files: result_files })
}