[Spice-devel] [spice-common] codegen: Fix enums.h generation with python3

[Christophe Fergeau]

Trying to generate enums.h with python3 results in
Traceback (most recent call last):
  File "./spice_codegen.py", line 217, in <module>
    write_enums(writer, options.generate_dissector)
  File "./spice_codegen.py", line 99, in write_enums
    write_channel_enums(writer, c, False, False)
  File "./spice_codegen.py", line 17, in write_channel_enums
    if len(messages) == 0:
TypeError: object of type 'filter' has no len()

filter() returns an enumerator object in python3 while it used to return
a list in python2. Using list(filter()) instead fixes that error.
I've checked that the generated enums.h is identical with python2 and
python3.
---
 spice_codegen.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/spice_codegen.py b/spice_codegen.py
index 84790af..569cccc 100755
--- a/spice_codegen.py
+++ b/spice_codegen.py
@@ -12,8 +12,8 @@ from python_modules import marshal
 import six
 
 def write_channel_enums(writer, channel, client, describe):
-    messages = filter(lambda m : m.channel == channel, \
-                          channel.client_messages if client else channel.server_messages)
+    messages = list(filter(lambda m : m.channel == channel, \
+                               channel.client_messages if client else channel.server_messages))
     if len(messages) == 0:
         return
     if client:
-- 
2.4.3