def rule(self, numberOfExtensions = 1,verbose = False):
if verbose:
print "\n--------------------------------------------"
print "prepare to apply {} new rules to the diagram:".format(numberOfExtensions)
self.ExtensionRequests = []
for rule in self.Rules:
CD = rule.CD
for hom in HomomorphismIterator(CD,self.diagram):
if rule.name=="ComposeRule":
ER = ComposeRequest(rule,hom)
if not ER.useful:
continue
else:
ER = ExtensionRequest(rule,hom)
if iscontainedin(ER,self.implemented):
continue
if not iscontainedin(ER,self.ExtensionRequests):
self.ExtensionRequests.append(ER)
if verbose:
print "{} new extension requests generated".format(len(self.ExtensionRequests))
print "prioritise extension requests"
if self.ExtensionRequests==[]:#nothing new to conclude
return False
sortedExtensionRequests = sorted(self.ExtensionRequests,key = self.Prioritiser)
ruleNumber = 0
while ruleNumber<numberOfExtensions:
#if there are no more extension requests, terminate
if not sortedExtensionRequests:
break
extensionRequest = sortedExtensionRequests.pop(0)
if extensionRequest in self.implemented:
continue
if verbose:
print "\n\n apply new Rule:"
print extensionRequest.rule.name
print extensionRequest.hom
print "with priority value {}\n"\
.format(self.Prioritiser(extensionRequest))
extensionRequest.implement()
self.implemented.append(extensionRequest)
ruleNumber+=1
if verbose:
print "applied {} new rules".format(ruleNumber)
return True
def reprWithoutZeros(D):
str_ = "Diagram with the following data"
str_+= "| Objects:\n| "
str_+="\n| ".join(str(o) for o in D.Objects)
str_+="\n\n| Morphisms by Commutativity class:\n| "
printed = []
for s in D.MorphismList:
quot = s.equivalenceClass()
if isMorphismZero(quot):
continue
if iscontainedin(quot, printed):
continue
str_+="\n| "+str(quot)
printed.append(quot)
return str_
