Rust: Improve and rename Adt class

rust/ast-generator/src/main.rs

@@ -15,6 +15,7 @@ use ungrammar::Grammar;
 
 fn class_name(type_name: &str) -> String {
     match type_name {
+        "Adt" => "TypeItem".to_owned(),
         "BinExpr" => "BinaryExpr".to_owned(),
         "ElseBranch" => "Expr".to_owned(),
         "Fn" => "Function".to_owned(),

rust/downgrades/c467bf63916002287b7bde8ce8b094c57579bd81/downgrade.ql

@@ -0,0 +1,73 @@
+class Element extends @element {
+  string toString() { none() }
+}
+
+class Enum extends Element, @enum { }
+
+class Struct extends Element, @struct { }
+
+class Union extends Element, @union { }
+
+class Attr extends Element, @attr { }
+
+class GenericParamList extends Element, @generic_param_list { }
+
+class Name extends Element, @name { }
+
+class Visibility extends Element, @visibility { }
+
+class WhereClause extends Element, @where_clause { }
+
+query predicate new_enum_attrs(Enum enum, int index, Attr attr) {
+  type_item_attrs(enum, index, attr)
+}
+
+query predicate new_enum_generic_param_lists(Enum enum, GenericParamList g) {
+  type_item_generic_param_lists(enum, g)
+}
+
+query predicate new_enum_names(Enum enum, Name name) { type_item_names(enum, name) }
+
+query predicate new_enum_visibilities(Enum enum, Visibility visibility) {
+  type_item_visibilities(enum, visibility)
+}
+
+query predicate new_enum_where_clauses(Enum enum, WhereClause whereClause) {
+  type_item_where_clauses(enum, whereClause)
+}
+
+query predicate new_struct_attrs(Struct struct, int index, Attr attr) {
+  type_item_attrs(struct, index, attr)
+}
+
+query predicate new_struct_generic_param_lists(Struct struct, GenericParamList g) {
+  type_item_generic_param_lists(struct, g)
+}
+
+query predicate new_struct_names(Struct struct, Name name) { type_item_names(struct, name) }
+
+query predicate new_struct_visibilities(Struct struct, Visibility visibility) {
+  type_item_visibilities(struct, visibility)
+}
+
+query predicate new_struct_where_clauses(Struct struct, WhereClause whereClause) {
+  type_item_where_clauses(struct, whereClause)
+}
+
+query predicate new_union_attrs(Union union, int index, Attr attr) {
+  type_item_attrs(union, index, attr)
+}
+
+query predicate new_union_generic_param_lists(Union union, GenericParamList g) {
+  type_item_generic_param_lists(union, g)
+}
+
+query predicate new_union_names(Union union, Name name) { type_item_names(union, name) }
+
+query predicate new_union_visibilities(Union union, Visibility visibility) {
+  type_item_visibilities(union, visibility)
+}
+
+query predicate new_union_where_clauses(Union union, WhereClause whereClause) {
+  type_item_where_clauses(union, whereClause)
+}