[gentoo-portage-dev] [PATCH] use_reduce: support non-string token_class (bug 541198)

[Zac Medico]

Do not assume that token_class returns a basestring.

X-Gentoo-Bug: 541198
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=541198
---
 pym/portage/dep/__init__.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pym/portage/dep/__init__.py b/pym/portage/dep/__init__.py
index e2e416c..a8c748d 100644
--- a/pym/portage/dep/__init__.py
+++ b/pym/portage/dep/__init__.py
@@ -558,7 +558,8 @@ def use_reduce(depstr, uselist=[], masklist=[], matchall=False, excludeall=[], i
 						stack[level].extend(l)
 					continue
 
-				if stack[level]:
+				if stack[level] and isinstance(stack[level][-1],
+					basestring):
 					if stack[level][-1] == "||" and not l:
 						#Optimize: || ( ) -> .
 						stack[level].pop()
@@ -583,7 +584,8 @@ def use_reduce(depstr, uselist=[], masklist=[], matchall=False, excludeall=[], i
 					#ends in a non-operator. This is almost equivalent to stack[level][-1]=="||",
 					#expect that it skips empty levels.
 					while k>=0:
-						if stack[k]:
+						if stack[k] and isinstance(stack[k][-1],
+							basestring):
 							if stack[k][-1] == "||":
 								return k
 							elif stack[k][-1][-1] != "?":
-- 
2.0.5