1 files changed, 24 insertions, 0 deletions
diff --git a/layout/style/GenerateCountedUnknownProperties.py b/layout/style/GenerateCountedUnknownProperties.py
new file mode 100644
index 0000000000..b46884da6b
--- /dev/null
+++ b/layout/style/GenerateCountedUnknownProperties.py
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import re
+import runpy
+import string
+
+
+def to_camel_case(ident):
+    return re.sub(
+        "(^|_|-)([a-z0-9])", lambda m: m.group(2).upper(), ident.strip("_").strip("-")
+    )
+
+
+def generate(output, prop_file):
+    properties = runpy.run_path(prop_file)["COUNTED_UNKNOWN_PROPERTIES"]
+
+    output.write("/* THIS IS AN AUTOGENERATED FILE.  DO NOT EDIT */\n\n")
+
+    for prop in properties:
+        output.write(
+            "COUNTED_UNKNOWN_PROPERTY({}, {})\n".format(prop, to_camel_case(prop))
+        )