refine the documentation, add extra warning messages

[lunaix-os.git] / lunaix-os / scripts / build-tools / lcfg2 / rewriter.py

diff --git a/lunaix-os/scripts/build-tools/lcfg2/rewriter.py b/lunaix-os/scripts/build-tools/lcfg2/rewriter.py
index a86ab52852079cbe5f801f9f7bde8f2363350156..9a42447eae54e4dd7087046c7afb7f1e81b18085 100644 (file)
--- a/lunaix-os/scripts/build-tools/lcfg2/rewriter.py
+++ b/lunaix-os/scripts/build-tools/lcfg2/rewriter.py
@@ -1,6 +1,6 @@
 import ast
 
-from lib.utils  import Schema
+from lib.utils  import Schema, SourceLogger
 from .lazy       import Lazy
 from .common     import NodeProperty, NodeInverseDependency
 
@@ -139,6 +139,10 @@ class ConfigNodeASTRewriter(ast.NodeTransformer):
     
     def visit_Return(self, node):
         if self.__when_epxr:
+            SourceLogger.warn(self.__cfg_node, node, 
+                              "mixed use of `return` and `when` directive. "
+                              "`when` have higher precedence than `return`. "
+                              "consider remove `return` to avoid confusion")
             return None
         return self.generic_visit(node)