+struct type_class_struct *struct_type_new(const char *name);
+void struct_type_free(struct type_class_struct *struct_class);
+void struct_type_add_field(struct type_class_struct *struct_class,
+ const char *field_name,
+ struct type_class *type_class);
+/*
+ * Returns the index of a field within a structure.
+ */
+unsigned long
+struct_type_lookup_field_index(struct type_class_struct *struct_class,
+ GQuark field_name);
+/*
+ * field returned only valid as long as the field structure is not appended to.
+ */
+struct field *
+struct_type_get_field_from_index(struct type_class_struct *struct_class,
+ unsigned long index);
+
+/*
+ * elem_class passed as parameter now belongs to the array. No need to free it
+ * explicitely.
+ */
+struct type_class_array *array_type_new(const char *name,
+ size_t len,
+ struct type_class *elem_class);
+void array_type_free(struct type_class_array *array_class);
+
+/*
+ * int_class and elem_class passed as parameter now belongs to the sequence. No
+ * need to free them explicitely.
+ */
+struct type_class_sequence *sequence_type_new(const char *name,
+ struct type_class_integer *len_class,
+ struct type_class *elem_class);
+void sequence_type_free(struct type_class_sequence *sequence_class);
+