From 7a49b4e62311c7945a64b10c103a49c22461f798 Mon Sep 17 00:00:00 2001
From: Jason Stubbs <jstubbs@gentoo.org>
Date: Tue, 24 Jan 2006 14:54:31 +0000
Subject: [PATCH] Move DEPEND empty sublist processing back into use_reduce

svn path=/main/trunk/; revision=2578
---
 pym/portage.py     | 20 --------------------
 pym/portage_dep.py | 10 ++++++++--
 2 files changed, 8 insertions(+), 22 deletions(-)

diff --git a/pym/portage.py b/pym/portage.py
index e05d311c5..44e4b9260 100644
--- a/pym/portage.py
+++ b/pym/portage.py
@@ -3375,26 +3375,6 @@ def dep_check(depstring,mydbapi,mysettings,use="yes",mode=None,myuse=None,use_ca
 	#if mysplit==None, then we have a parse error (paren mismatch or misplaced ||)
 	#up until here, we haven't needed to look at the database tree
 
-	# recursive cleansing of empty arrays.
-	# without this, portage eats itself if fed a || ()
-	def f(a):
-		x = 0
-		l = len(a)
-		while x < l:
-			if isinstance(a[x], list):
-				l2 = len(a[x])
-				if l2 == 0:
-					a.pop(x)
-				elif l2 == 1 and a[x][0] in ("||", "&&"):
-					a.pop(x)
-				else:
-					f(a[x])
-					x+=1
-					continue
-				l-=1
-			x+=1
-	f(mysplit)
-			
 	if mysplit==None:
 		return [0,"Parse Error (parentheses mismatch?)"]
 	elif mysplit==[]:
diff --git a/pym/portage_dep.py b/pym/portage_dep.py
index de5c504cc..116bb2043 100644
--- a/pym/portage_dep.py
+++ b/pym/portage_dep.py
@@ -79,7 +79,11 @@ def use_reduce(deparray, uselist=[], masklist=[], matchall=0, excludeall=[]):
 		head = mydeparray.pop(0)
 
 		if type(head) == types.ListType:
-			rlist.append(use_reduce(head, uselist, masklist, matchall, excludeall))
+			additions = use_reduce(head, uselist, masklist, matchall, excludeall)
+			if additions:
+				rlist.append(additions)
+			elif rlist and rlist[-1] in ("||","&&"):
+				raise portage_exception.InvalidDependString("INVALID "+rlist[-1]+" DEPEND STRING: "+str(deparray))
 
 		else:
 			if head[-1] == "?": # Use reduce next group on fail.
@@ -122,7 +126,9 @@ def use_reduce(deparray, uselist=[], masklist=[], matchall=0, excludeall=[]):
 				if ismatch:
 					target = newdeparray[-1]
 					if isinstance(target, list):
-						rlist.append(use_reduce(target, uselist, masklist, matchall, excludeall))
+						additions = use_reduce(target, uselist, masklist, matchall, excludeall)
+						if additions:
+							rlist.append(additions)
 					else:
 						rlist += [target]
 
-- 
2.26.2