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use base_db::{
semantics::{
tex::{Label, LabelKind},
Span,
},
util::queries::Object,
};
use rowan::ast::AstNode;
use rustc_hash::FxHashSet;
use syntax::latex;
use crate::{
util::{find_curly_group_word, CompletionBuilder},
CompletionParams,
};
pub fn complete_label_definitions<'a>(
params: &'a CompletionParams<'a>,
builder: &mut CompletionBuilder<'a>,
) -> Option<()> {
let cursor = find_definition(params)?;
let label_defs: FxHashSet<&str> = Label::find_all(¶ms.feature.project)
.filter(|(_, label)| label.kind == LabelKind::Definition)
.map(|(_, label)| label.name_text())
.collect();
let label_refs: FxHashSet<&str> = Label::find_all(¶ms.feature.project)
.filter(|(_, label)| label.kind == LabelKind::Reference)
.map(|(_, label)| label.name_text())
.collect();
for label in label_refs.difference(&label_defs) {
let Some(score) = builder.matcher.score(label, &cursor.text) else {
continue;
};
let data = crate::LabelData {
name: label,
header: None,
footer: None,
object: None,
keywords: label.to_string(),
};
builder.items.push(crate::CompletionItem::new_simple(
score,
cursor.range,
crate::CompletionItemData::Label(data),
));
}
Some(())
}
fn find_definition(params: &CompletionParams) -> Option<Span> {
let (cursor, group) = find_curly_group_word(params)?;
latex::LabelDefinition::cast(group.syntax().parent()?)?;
Some(cursor)
}
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