1 files changed, 33 insertions, 0 deletions
diff --git a/support/texlab/crates/completion/src/util.rs b/support/texlab/crates/completion/src/util.rs
new file mode 100644
index 0000000000..6e64866979
--- /dev/null
+++ b/support/texlab/crates/completion/src/util.rs
@@ -0,0 +1,33 @@
+mod builder;
+pub mod matchers;
+mod patterns;
+
+pub use builder::*;
+pub use patterns::*;
+
+pub fn included_packages<'a>(
+    params: &'a base_db::FeatureParams<'a>,
+) -> impl Iterator<Item = &completion_data::Package<'_>> + 'a {
+    let db = &completion_data::DATABASE;
+    let documents = params.project.documents.iter();
+    let links = documents
+        .filter_map(|document| document.data.as_tex())
+        .flat_map(|data| data.semantics.links.iter());
+
+    links
+        .filter_map(|link| link.package_name())
+        .filter_map(|name| db.find(&name))
+        .chain(std::iter::once(db.kernel()))
+        .flat_map(|pkg| {
+            pkg.references
+                .iter()
+                .filter_map(|name| db.find(name))
+                .chain(std::iter::once(pkg))
+        })
+}
+
+pub struct ProviderContext<'a, 'b> {
+    pub builder: &'b mut CompletionBuilder<'a>,
+    pub params: &'a crate::CompletionParams<'a>,
+    pub cursor: base_db::semantics::Span,
+}