From 943ece8610fce9e6e5fda1b524ee479f013e8c5b Mon Sep 17 00:00:00 2001
From: Chris Larson <chris_larson@mentor.com>
Date: Fri, 9 Apr 2010 19:22:52 -0700
Subject: [PATCH] Implement bb.msg.domain as a named tuple, drop the Enum class

Also fixes some bb.msg references from within bb.msg.

(Bitbake rev: db95af590f742c8186e84046ad9704fae1733720)

Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
---
 bitbake/lib/bb/msg.py   | 38 ++++++++++++++++++++------------------
 bitbake/lib/bb/utils.py | 40 ----------------------------------------
 2 files changed, 20 insertions(+), 58 deletions(-)

diff --git a/bitbake/lib/bb/msg.py b/bitbake/lib/bb/msg.py
index 9cb1d4c143..cf79314017 100644
--- a/bitbake/lib/bb/msg.py
+++ b/bitbake/lib/bb/msg.py
@@ -23,13 +23,17 @@ Message handling infrastructure for bitbake
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 import sys, bb
+import collections
 from bb import event
 
-debug_level = {}
-
+debug_level = collections.defaultdict(lambda: 0)
 verbose = False
 
-domain = bb.utils.Enum(
+def _NamedTuple(name, fields):
+    Tuple = collections.namedtuple(name, " ".join(fields))
+    return Tuple(*range(len(fields)))
+
+domain = _NamedTuple("Domain",(
     'Build',
     'Cache',
     'Collection',
@@ -41,7 +45,7 @@ domain = bb.utils.Enum(
     'Provider',
     'RunQueue',
     'TaskData',
-    'Util')
+    'Util'))
 
 
 class MsgBase(bb.event.Event):
@@ -74,23 +78,21 @@ class MsgPlain(MsgBase):
 #
 
 def set_debug_level(level):
-    bb.msg.debug_level = {}
-    for domain in bb.msg.domain:
-        bb.msg.debug_level[domain] = level
-    bb.msg.debug_level['default'] = level
+    for d in domain:
+        debug_level[d] = level
+    debug_level['default'] = level
 
 def set_verbose(level):
-    bb.msg.verbose = level
+    verbose = level
 
-def set_debug_domains(domains):
-    for domain in domains:
-        found = False
-        for ddomain in bb.msg.domain:
-            if domain == str(ddomain):
-                bb.msg.debug_level[ddomain] = bb.msg.debug_level[ddomain] + 1
-                found = True
-        if not found:
-            bb.msg.warn(None, "Logging domain %s is not valid, ignoring" % domain)
+def set_debug_domains(domain_strings):
+    for domainstr in domain_strings:
+        for d in domain:
+            if domain._fields[d] == domainstr:
+                debug_level[d] += 1
+                break
+        else:
+            warn(None, "Logging domain %s is not valid, ignoring" % domain)
 
 #
 # Message handling functions
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index 83304e4a01..eee97276a2 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -371,46 +371,6 @@ def simple_exec(code, context):
 def better_eval(source, locals):
     return eval(source, _context, locals)
 
-def Enum(*names):
-   """
-   A simple class to give Enum support
-   """
-
-   assert names, "Empty enums are not supported"
-
-   class EnumClass(object):
-      __slots__ = names
-      def __iter__(self):        return iter(constants)
-      def __len__(self):         return len(constants)
-      def __getitem__(self, i):  return constants[i]
-      def __repr__(self):        return 'Enum' + str(names)
-      def __str__(self):         return 'enum ' + str(constants)
-
-   class EnumValue(object):
-      __slots__ = ('__value')
-      def __init__(self, value): self.__value = value
-      Value = property(lambda self: self.__value)
-      EnumType = property(lambda self: EnumType)
-      def __hash__(self):        return hash(self.__value)
-      def __cmp__(self, other):
-         # C fans might want to remove the following assertion
-         # to make all enums comparable by ordinal value {;))
-         assert self.EnumType is other.EnumType, "Only values from the same enum are comparable"
-         return cmp(self.__value, other.__value)
-      def __invert__(self):      return constants[maximum - self.__value]
-      def __nonzero__(self):     return bool(self.__value)
-      def __repr__(self):        return str(names[self.__value])
-
-   maximum = len(names) - 1
-   constants = [None] * len(names)
-   for i, each in enumerate(names):
-      val = EnumValue(i)
-      setattr(EnumClass, each, val)
-      constants[i] = val
-   constants = tuple(constants)
-   EnumType = EnumClass()
-   return EnumType
-
 def lockfile(name):
     """
     Use the file fn as a lock file, return when the lock has been acquired.