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Factor out token ranking

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This commit is contained in:
Lukas Wirth 2024-10-25 12:02:48 +02:00
parent 52a03ec237
commit ca3699bd50
4 changed files with 37 additions and 36 deletions
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22
crates/ide/src/hover.rs
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@ -11,7 +11,7 @@ use ide_db::{
defs::{Definition, IdentClass, NameRefClass, OperatorClass},
famous_defs::FamousDefs,
helpers::pick_best_token,
FileRange, FxIndexSet, RootDatabase,
FileRange, FxIndexSet, Ranker, RootDatabase,
};
use itertools::{multizip, Itertools};
use span::Edition;
@ -182,27 +182,13 @@ fn hover_offset(
// equivalency is more important
let mut descended = sema.descend_into_macros(original_token.clone());
let kind = original_token.kind();
let text = original_token.text();
let ident_kind = kind.is_any_identifier();
let ranker = Ranker::from_token(&original_token);
descended.sort_by_cached_key(|tok| {
let tok_kind = tok.kind();
let exact_same_kind = tok_kind == kind;
let both_idents = exact_same_kind || (tok_kind.is_any_identifier() && ident_kind);
let same_text = tok.text() == text;
// anything that mapped into a token tree has likely no semantic information
let no_tt_parent = tok.parent().map_or(false, |it| it.kind() != TOKEN_TREE);
!((both_idents as usize)
| ((exact_same_kind as usize) << 1)
| ((same_text as usize) << 2)
| ((no_tt_parent as usize) << 3))
});
descended.sort_by_cached_key(|tok| ranker.rank_token(tok));
let mut res = vec![];
for token in descended {
let is_same_kind = token.kind() == kind;
let is_same_kind = token.kind() == ranker.kind;
let lint_hover = (|| {
// FIXME: Definition should include known lints and the like instead of having this special case here
let attr = token.parent_ancestors().find_map(ast::Attr::cast)?;