Rust: Restructure classes representing calls

rust/downgrades/e54d01f67a416b3d6eb7b970f27295097f2cac7f/upgrade.properties

@@ -0,0 +1,10 @@
+description: Added the `@call_expr_base` union type
+compatibility: backwards
+
+call_expr_arg_lists.rel: delete
+call_expr_attrs.rel: delete
+method_call_expr_arg_lists.rel: delete
+method_call_expr_attrs.rel: delete
+
+call_expr_base_arg_lists.rel: run upgrade.ql call_expr_base_arg_lists
+call_expr_base_attrs.rel: run upgrade.ql call_expr_base_attrs

rust/downgrades/e54d01f67a416b3d6eb7b970f27295097f2cac7f/upgrade.ql

@@ -0,0 +1,19 @@
+class Element extends @element {
+  string toString() { none() }
+}
+
+class ArgList extends Element, @arg_list { }
+
+class Attr extends Element, @attr { }
+
+query predicate call_expr_base_arg_lists(Element c, ArgList l) {
+  call_expr_base_arg_lists(c, l)
+  or
+  method_call_expr_arg_lists(c, l)
+}
+
+query predicate call_expr_base_attrs(Element c, int i, Attr a) {
+  call_expr_attrs(c, i, a)
+  or
+  method_call_expr_attrs(c, i, a)
+}