scanner: Automatically skip callables which contain a skipped node

For legacy library author convenience, propagate (skip) on e.g.
structures to all callables which use them.

1 files changed, 19 insertions, 0 deletions

diff --git a/giscanner/introspectablepass.py b/giscanner/introspectablepass.py
index 6653c097..290f1d22 100644
--- a/giscanner/introspectablepass.py
+++ b/giscanner/introspectablepass.py
@@ -30,6 +30,7 @@ class IntrospectablePass(object):
     # Public API
 
     def validate(self):
+        self._namespace.walk(self._propagate_callable_skips)
         self._namespace.walk(self._analyze_node)
         self._namespace.walk(self._introspectable_callable_analysis)
         self._namespace.walk(self._introspectable_callable_analysis)
@@ -143,6 +144,24 @@ class IntrospectablePass(object):
             return False
         return target.introspectable and (not target.skip)
 
+    def _propagate_parameter_skip(self, parent, node):
+        if node.type.target_giname is not None:
+            target = self._transformer.lookup_typenode(node.type)
+            if target is None:
+                return
+        else:
+            return
+
+        if target.skip:
+            parent.skip = True
+
+    def _propagate_callable_skips(self, obj, stack):
+        if isinstance(obj, ast.Callable):
+            for param in obj.parameters:
+                self._propagate_parameter_skip(obj, param)
+            self._propagate_parameter_skip(obj, obj.retval)
+        return True
+
     def _analyze_node(self, obj, stack):
         if obj.skip:
             return False