[gentoo-commits] proj/gentoopm:master commit in: gentoopm/basepm/

[Michał Górny]

commit:     9f786534a3828be4f3d7030d773e7a82a542d7f5
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Thu Jul 28 14:46:53 2011 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Thu Jul 28 14:46:53 2011 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/gentoopm.git;a=commit;h=9f786534

Introduce an abstract exactly-one-of dep.

---
 gentoopm/basepm/depend.py |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/gentoopm/basepm/depend.py b/gentoopm/basepm/depend.py
index ca6d2c5..923cdbf 100644
--- a/gentoopm/basepm/depend.py
+++ b/gentoopm/basepm/depend.py
@@ -100,6 +100,18 @@ class PMAnyOfDep(PMBaseDep):
 class PMUncondAnyOfDep(PMAnyOfDep, PMUncondBaseDep):
 	pass
 
+class PMExactlyOneOfDep(PMBaseDep):
+	"""
+	An exactly-one-of (xor) dependency set (C{^^ ( ... )}).
+	"""
+
+	@property
+	def without_conditionals(self):
+		return PMUncondExactlyOneOfDep(self)
+
+class PMUncondExactlyOneOfDep(PMExactlyOneOfDep, PMUncondBaseDep):
+	pass
+
 class PMPackageDepSet(PMAllOfDep):
 	"""
 	A base class representing a depset (or depset-like variable) of a single