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|
import string
import re
import threading
import string
# Base classes global vars management
_BASECLASSESLOCK = threading.RLock()
_BASECLASSES = {}
_BASEMETALOCK = threading.RLock()
_BASEMETA = {}
def showaq(self, indent=''):
"showaq"
rval = ""
obj = self
base = getattr(obj, 'aq_base', obj)
try: id = base.id
except: id = str(base)
try: id = id()
except: pass
if hasattr(obj, 'aq_self'):
if hasattr(obj.aq_self, 'aq_self'):
rval = rval + indent + "(" + id + ")\n"
rval = rval + indent + "| \\\n"
rval = rval + showaq(obj.aq_self, '| ' + indent)
rval = rval + indent + "|\n"
if hasattr(obj, 'aq_parent'):
rval = rval + indent + id + "\n"
rval = rval + indent + "|\n"
rval = rval + showaq(obj.aq_parent, indent)
else:
rval = rval + indent + id + "\n"
return rval
def listBaseMetaTypes(cl, reverse = 0):
"""
listBaseMetaTypes(cl, reverse = 0) => list of strings
List all base meta types for this class.
"""
# Look for the class in _BASEMETA cache
try:
return _BASEMETA[cl][reverse]
except KeyError:
_populateBaseMetaTypes(cl)
return listBaseMetaTypes(cl, reverse)
def isBaseMetaType(meta, cl):
try:
return _BASEMETA[cl][2].has_key(meta)
except KeyError:
_populateBaseMetaTypes(cl)
return isBaseMetaType(meta, cl)
def _populateBaseMetaTypes(cl):
"""Fill the base classes structure"""
# Fill the base classes list
try:
ret = [cl.meta_type]
except AttributeError:
ret = []
for b in cl.__bases__:
ret = list(listBaseMetaTypes(b, 1)) + ret
# Fill the base classes dict
bases = {}
for b in ret:
bases[b] = 1
_BASEMETALOCK.acquire()
try:
rev = ret[:]
rev.reverse()
_BASEMETA[cl] = (tuple(rev), tuple(ret), bases)
finally:
_BASEMETALOCK.release()
def objectIds(container, meta_types = []):
"""
"""
return map(lambda x: x[0], objectItems(container, meta_types))
def objectValues(container, meta_types = []):
"""
"""
return map(lambda x: x[1], objectItems(container, meta_types))
def objectItems(container, meta_types = []):
"""
objectItems(container, meta_types = [])
Same as a container's objectItem method, meta_types are scanned in the base classes too.
Ie. all objects derivated from Folder will be returned by objectItem(x, ['Folder'])
"""
# Convert input type
if type(meta_types) not in (type(()), type([])):
meta_types = [meta_types]
# Special case where meta_types is empty
if not meta_types:
return container.objectItems()
# Otherwise : check parent for each meta_type
ret = []
for (id, obj) in container.objectItems():
for mt in meta_types:
if isBaseMetaType(mt, obj.__class__):
ret.append((id, obj))
break
return ret
def listBaseClasses(cl, reverse = 0):
"""
listBaseClasses(cl, reverse = 0) => list of classes
List all the base classes of an object.
When reverse is 0, return the self class first.
When reverse is 1, return the self class last.
WARNING : reverse is 0 or 1, it is an integer, NOT A BOOLEAN ! (optim issue)
CACHE RESULTS
WARNING : for optimization issues, the ORIGINAL tuple is returned : please do not change it !
"""
# Look for the class in _BASECLASSES cache
try:
return _BASECLASSES[cl][reverse]
except:
_populateBaseClasses(cl)
return listBaseClasses(cl, reverse)
def isBaseClass(base, cl):
"""
isBaseClass(base, cl) => Boolean
Return true if base is a base class of cl
"""
try:
return _BASECLASSES[cl][2].has_key(base)
except:
_populateBaseClasses(cl)
return isBaseClass(base, cl)
def _populateBaseClasses(cl):
"""Fill the base classes structure"""
# Fill the base classes list
ret = [cl]
for b in cl.__bases__:
ret = list(listBaseClasses(b, 1)) + ret
# Fill the base classes dict
bases = {}
for b in ret:
bases[b] = 1
_BASECLASSESLOCK.acquire()
try:
rev = ret[:]
rev.reverse()
_BASECLASSES[cl] = (tuple(rev), tuple(ret), bases)
finally:
_BASECLASSESLOCK.release()
|
