Use absolute imports in xcbgen for Python 3 compatibility

Python 3 has stricter syntax for relative imports. Use absolute imports to
ensure compatibility with all versions of Python. Also break cyclical module
import between state.py and matcher.py by deferring import.

Signed-off-by: David Coles <dcoles@gaikai.com>
Signed-off-by: Julien Danjou <julien@danjou.info>

3 files changed, 7 insertions, 6 deletions

diff --git a/xcbgen/matcher.py b/xcbgen/matcher.py
index e7958fa..6e45b23 100644
--- a/xcbgen/matcher.py
+++ b/xcbgen/matcher.py
@@ -9,14 +9,15 @@ we do not create a new type object, we just record the existing one under a new
 from os.path import join
 from xml.etree.cElementTree import parse
 
-import state
-from xtypes import *
+from xcbgen.xtypes import *
 
 def import_(node, module, namespace):
     '''
     For imports, we load the file, create a new namespace object,
     execute recursively, then record the import (for header files, etc.)
     '''
+    # To avoid circular import error
+    from xcbgen import state
     new_file = join(namespace.dir, '%s.xml' % node.text)
     new_root = parse(new_file).getroot()
     new_namespace = state.Namespace(new_file)
diff --git a/xcbgen/state.py b/xcbgen/state.py
index 51efc94..ae3d2d4 100644
--- a/xcbgen/state.py
+++ b/xcbgen/state.py
@@ -4,9 +4,9 @@ This module contains the namespace class and the singleton module class.
 from os.path import dirname, basename
 from xml.etree.cElementTree import parse
 
-import matcher
-from error import *
-from xtypes import *
+from xcbgen import matcher
+from xcbgen.error import *
+from xcbgen.xtypes import *
 
 import __main__
 
diff --git a/xcbgen/xtypes.py b/xcbgen/xtypes.py
index 1a6c7ce..14c318a 100644
--- a/xcbgen/xtypes.py
+++ b/xcbgen/xtypes.py
@@ -1,7 +1,7 @@
 '''
 This module contains the classes which represent XCB data types.
 '''
-from expr import Field, Expression
+from xcbgen.expr import Field, Expression
 import __main__
 
 class Type(object):