python: Better check for integer types

Python 3 lost the long type: now everything is an int, with the right
size.

This commit makes the script compatible with Python 2 (where we check
for both int and long) and Python 3 (where we only check for int).

Signed-off-by: Mathieu Bridon <[email protected]>
Reviewed-by: Eric Engestrom <[email protected]>
Reviewed-by: Dylan Baker <[email protected]>

1 files changed, 11 insertions, 2 deletions

diff --git a/src/gallium/auxiliary/util/u_format_pack.py b/src/gallium/auxiliary/util/u_format_pack.py
index ad2e49281fb..c1307d30c2f 100644
--- a/src/gallium/auxiliary/util/u_format_pack.py
+++ b/src/gallium/auxiliary/util/u_format_pack.py
@@ -38,9 +38,18 @@
 
 from __future__ import division, print_function
 
+import sys
+
 from u_format_parse import *
 
 
+if sys.version_info < (3, 0):
+    integer_types = (int, long)
+
+else:
+    integer_types = (int, )
+
+
 def inv_swizzles(swizzles):
     '''Return an array[4] of inverse swizzle terms'''
     '''Only pick the first matching value to avoid l8 getting blue and i8 getting alpha'''
@@ -212,7 +221,7 @@ def truncate_mantissa(x, bits):
     '''Truncate an integer so it can be represented exactly with a floating
     point mantissa'''
 
-    assert isinstance(x, (int, long))
+    assert isinstance(x, integer_types)
 
     s = 1
     if x < 0:
@@ -236,7 +245,7 @@ def value_to_native(type, value):
     '''Get the value of unity for this type.'''
     if type.type == FLOAT:
         if type.size <= 32 \
-            and isinstance(value, (int, long)):
+            and isinstance(value, integer_types):
             return truncate_mantissa(value, 23)
         return value
     if type.type == FIXED: