Swift: add upgrade/downgrade scripts

Author: redsun82

swift/downgrades/db22947f6ae7024092c0da65b4fafb973f2331a3/module_decl_exported_modules.ql

@@ -0,0 +1,15 @@
+class Element extends @element {
+  string toString() { none() }
+}
+
+int getExportedModuleIndex(Element m, Element i) {
+  i =
+    rank[result + 1](Element j, string name |
+      module_decl_exported_modules(m, j) and type_decls(j, name)
+    |
+      j order by name
+    )
+}
+
+from Element m, Element i
+select m, getExportedModuleIndex(m, i), i

swift/downgrades/db22947f6ae7024092c0da65b4fafb973f2331a3/module_decl_imported_modules.ql

@@ -0,0 +1,15 @@
+class Element extends @element {
+  string toString() { none() }
+}
+
+int getImportedModuleIndex(Element m, Element i) {
+  i =
+    rank[result + 1](Element j, string name |
+      module_decl_imported_modules(m, j) and type_decls(j, name)
+    |
+      j order by name
+    )
+}
+
+from Element m, Element i
+select m, getImportedModuleIndex(m, i), i