Eolian: add API to return the class from a function.

@feature

src/lib/eolian/Eolian.h

@@ -1097,6 +1097,16 @@ EAPI Eina_Bool eolian_function_return_is_warn_unused(const Eolian_Function *foo_
  */
 EAPI Eina_Bool eolian_function_object_is_const(const Eolian_Function *function_id);
 
+/*
+ * @brief Return the Eolian class associated to the function.
+ *
+ * @param[in] function_id id of the function
+ * @return the class, NULL otherwise
+ *
+ * @ingroup Eolian
+ */
+EAPI const Eolian_Class *eolian_function_class_get(const Eolian_Function *function_id);
+
 /*
  * @brief Get full string of an overriding function (implement).
  *

src/lib/eolian/database_function_api.c

@@ -250,6 +250,13 @@ eolian_function_object_is_const(const Eolian_Function *fid)
    return fid->obj_is_const;
 }
 
+EAPI const Eolian_Class *
+eolian_function_class_get(const Eolian_Function *fid)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(fid, EINA_FALSE);
+   return fid->klass;
+}
+
 EAPI Eina_Bool
 eolian_function_is_c_only(const Eolian_Function *fid)
 {

src/tests/eolian/eolian_parsing.c

@@ -558,6 +558,7 @@ START_TEST(eolian_simple_parsing)
    fail_if(strcmp(string, "comment a.set"));
    string = eolian_function_description_get(fid, EOLIAN_PROP_GET);
    fail_if(string);
+   fail_if(eolian_function_class_get(fid) != class);
    /* Set return */
    tp = eolian_function_return_type_get(fid, EOLIAN_PROP_SET);
    fail_if(!tp);