eolian: add api to access the requires field

Summary:
This is needed in order to support checking the correct regular classes
in efl#.

ref T7240
Depends on D7673

Test Plan: run ninja test / make check

Reviewers: q66, felipealmeida, segfaultxavi

Reviewed By: felipealmeida

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T7240

Differential Revision: https://phab.enlightenment.org/D7674

src/lib/eolian/Eolian.h

@@ -1461,6 +1461,19 @@ EAPI Eina_Stringshare *eolian_class_data_type_get(const Eolian_Class *klass);
  */
 EAPI const Eolian_Class *eolian_class_parent_get(const Eolian_Class *klass);
 
+/*
+ * @brief Returns an iterator to the required classes of this mixin
+ *
+ * For none mixins this will return an empty iterator, for mixins this retuns a iterator that
+ * carries all the classes that are required by this passed mixin.
+ *
+ * @param[in] klass the class
+ * @return the iterator
+ *
+ * @ingroup Eolian
+ */
+EAPI Eina_Iterator *eolian_class_requires_get(const Eolian_Class *klass);
+
 /*
  * @brief Returns an iterator to the class extensions
  *

src/lib/eolian/database_class_api.c

@@ -55,6 +55,12 @@ eolian_class_parent_get(const Eolian_Class *cl)
   return cl->parent;
 }
 
+EAPI Eina_Iterator *
+eolian_class_requires_get(const Eolian_Class *cl)
+{
+   return eina_list_iterator_new(cl->requires);
+}
+
 EAPI Eina_Iterator *
 eolian_class_extensions_get(const Eolian_Class *cl)
 {

src/tests/eolian/eolian_parsing.c

@@ -1583,14 +1583,35 @@ EFL_START_TEST(eolian_mixins_require)
    //check that implements contains this one class
    {
       Eolian_Implement *impl;
-      Eina_Iterator *i = eolian_class_extensions_get (cl);
+      Eina_Iterator *i = eolian_class_implements_get(cl);
+      Eina_Array *tmp = eina_array_new(1);
 
       EINA_ITERATOR_FOREACH(i, impl)
         {
-           ck_assert_ptr_eq(eolian_implement_class_get(impl), base);
+           if (eolian_implement_class_get(impl) != cl)
+             {
+                eina_array_push(tmp, eolian_implement_class_get(impl));
+                ck_assert_ptr_eq(eolian_implement_class_get(impl), base);
+             }
         }
+      ck_assert_int_eq(eina_array_count(tmp), 1);
+      eina_array_free(tmp);
       eina_iterator_free(i);
    }
+   //check that the mixins has the right require
+   {
+      Eina_Iterator *iter = eolian_class_requires_get(cl);
+      Eina_Array *tmp = eina_array_new(1);
+
+      EINA_ITERATOR_FOREACH(iter, cl)
+        {
+           eina_array_push(tmp, cl);
+        }
+      ck_assert_int_eq(eina_array_count(tmp), 1);
+      ck_assert_ptr_eq(eina_array_data_get(tmp, 0), base);
+      eina_array_free(tmp);
+      eina_iterator_free(iter);
+   }
    eolian_state_free(eos);
 }
 EFL_END_TEST