schema: get features from compiled module

It is not always possible to get the features from the parsed module.
It is the case for a module obtained from a sysrepo printed context.
Introduce compiled_enabled_features that returns the features from
the compiled object.

Signed-off-by: Jeremie Leska <jeremie.leska@6wind.com>

Author: jeremie6wind

libyang/schema.py

@@ -110,6 +110,11 @@ def features(self) -> Iterator["Feature"]:
         for i in features_list:
             yield Feature(self.context, i)
 
+    def compiled_enabled_features(self) -> Iterator[str]:
+        if self.cdata.compiled:
+            for f in ly_array_iter(self.cdata.compiled.features):
+                yield c2str(f)
+
     def get_feature(self, name: str) -> "Feature":
         for f in self.features():
             if f.name() == name:

tests/test_schema.py

@@ -108,6 +108,11 @@ def test_mod_features(self):
         features = list(self.module.features())
         self.assertEqual(len(features), 2)
 
+    def test_mod_compiled_enabled_features(self):
+        self.module.feature_enable("*")
+        features = list(self.module.compiled_enabled_features())
+        self.assertEqual(len(features), 2)
+
     def test_mod_get_feature(self):
         self.module.feature_enable("turbo-boost")
         feature = self.module.get_feature("turbo-boost")