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use lsp_types::CompletionParams;
use rowan::ast::AstNode;
use rustc_hash::FxHashSet;
use smol_str::SmolStr;
use crate::{component_db::COMPONENT_DATABASE, features::cursor::CursorContext, syntax::latex};
use super::types::{InternalCompletionItem, InternalCompletionItemData};
pub fn complete_imports<'a>(
context: &'a CursorContext<CompletionParams>,
items: &mut Vec<InternalCompletionItem<'a>>,
) -> Option<()> {
let (_, range, group) = context.find_curly_group_word_list()?;
let (extension, mut factory): (
&str,
Box<dyn FnMut(SmolStr) -> InternalCompletionItemData<'a>>,
) = match group.syntax().parent()?.kind() {
latex::PACKAGE_INCLUDE => (
"sty",
Box::new(|name| InternalCompletionItemData::Package { name }),
),
latex::CLASS_INCLUDE => (
"cls",
Box::new(|name| InternalCompletionItemData::Class { name }),
),
_ => return None,
};
let mut file_names = FxHashSet::default();
for file_name in COMPONENT_DATABASE
.components
.iter()
.flat_map(|comp| comp.file_names.iter())
.filter(|file_name| file_name.ends_with(extension))
{
file_names.insert(file_name);
let stem = &file_name[0..file_name.len() - 4];
let data = factory(stem.into());
items.push(InternalCompletionItem::new(range, data));
}
let resolver = &context.request.workspace.environment.resolver;
for file_name in resolver
.files_by_name
.keys()
.filter(|file_name| file_name.ends_with(extension) && !file_names.contains(file_name))
{
let stem = &file_name[0..file_name.len() - 4];
let data = factory(stem.into());
items.push(InternalCompletionItem::new(range, data));
}
Some(())
}
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