Rust: add localDefinitions.ql

Author: aibaars

rust/ql/lib/ide-contextual-queries/localDefinitions.ql

@@ -0,0 +1,23 @@
+/**
+ * @name Jump-to-definition links
+ * @description Generates use-definition pairs that provide the data
+ *              for jump-to-definition in the code viewer.
+ * @kind definitions
+ * @id rus/ide-jump-to-definition
+ * @tags ide-contextual-queries/local-definitions
+ */
+
+import codeql.IDEContextual
+import codeql.rust.elements.Variable
+import codeql.rust.elements.Locatable
+
+external string selectedSourceFile();
+
+predicate localVariable(Locatable e, Variable def) { e = def.getAnAccess() }
+
+from Locatable e, Variable def, string kind
+where
+  e.getLocation().getFile() = getFileBySourceArchiveName(selectedSourceFile()) and
+  localVariable(e, def) and
+  kind = "local variable"
+select e, def, kind