language-servers/rust-analyzer
1
0
Fork 0
mirror of https://github.com/rust-lang/rust-analyzer.git synced 2025-10-02 22:54:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

Show documentation for hover requests

Browse source
This commit is contained in:
Jeremy A. Kolb 2018-11-05 16:37:27 -05:00 • committed by Aleksey Kladov
parent 6df71da81f
commit 8ccd26adf3
6 changed files with 71 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

26
crates/ra_editor/src/symbols.rs
View file

@ -2,7 +2,7 @@ use crate::TextRange;
use ra_syntax::{
algo::visit::{visitor, Visitor},
ast::{self, NameOwner},
ast::{self, DocCommentsOwner, NameOwner},
AstNode, File, SmolStr, SyntaxKind, SyntaxNodeRef, WalkEvent,
};
@ -22,6 +22,30 @@ pub struct FileSymbol {
pub kind: SyntaxKind,
}
impl FileSymbol {
pub fn docs(&self, file: &File) -> Option<String> {
file.syntax().descendants()
.filter(|node| node.kind() == self.kind && node.range() == self.node_range)
.filter_map(|node: SyntaxNodeRef| {
fn doc_comments<'a, N: DocCommentsOwner<'a>>(node: N) -> Option<String> {
let comments = node.doc_comment_text();
if comments.is_empty() { None } else { Some(comments) }
}
visitor()
.visit(doc_comments::<ast::FnDef>)
.visit(doc_comments::<ast::StructDef>)
.visit(doc_comments::<ast::EnumDef>)
.visit(doc_comments::<ast::TraitDef>)
.visit(doc_comments::<ast::Module>)
.visit(doc_comments::<ast::TypeDef>)
.visit(doc_comments::<ast::ConstDef>)
.visit(doc_comments::<ast::StaticDef>)
.accept(node)?
}).nth(0)
}
}
pub fn file_symbols(file: &File) -> Vec<FileSymbol> {
file.syntax().descendants().filter_map(to_symbol).collect()
}