def explanation(self, ko=None, flags=""):
"""Produce a justification for this formula into the output formula
Creates an output formula if necessary.
returns it.
(This is different from reason.explain(ko) which returns the reason)"""
if ko == None: ko = self.formula.store.newFormula()
ko.bind("n3", "http://www.w3.org/2004/06/rei#")
ko.bind("log", "http://www.w3.org/2000/10/swap/log#")
ko.bind("pr", "http://www.w3.org/2000/10/swap/reason#")
ko.bind("run", runNamespace())
me = self.explain(ko, flags)
ko.add(me, rdf.type, reason.Proof, why=dontAsk)
return ko
def formulaStandIn(self, ko, f, flags):
if 'n' not in flags:
return f
if len(f) <= MAX_INLINE_SIZE:
return f
try:
m = self[(ko, f)]
#progress('cache hit, we save $$!')
return m
except KeyError:
from formula import Formula, StoredStatement
if 'l' in flags:
standIn = ko.newBlankNode(why=dontAsk)
else:
self[id(self)] += 1
standIn = ko.newSymbol(runNamespace() + '_efm' +
str(self[id(self)]))
self[(ko, f)] = standIn
ko.add(subj=f, pred=ko.store.sameAs, obj=standIn, why=dontAsk)
return standIn
def subFormulaStandIn(self, ko, f, flags):
if 'n' not in flags:
return f
from formula import Formula
if isinstance(f, List):
return ko.store.newList([subFormulaStandIn(ko, x, flags) for x in f])
if not isinstance(f, Formula) or len(f) <= MAX_INLINE_SIZE:
return f
try:
m = self[(ko, f)]
#progress('cache hit, we save $$!')
return m
except KeyError:
if 'l' in flags:
standIn = ko.newBlankNode(why=dontAsk)
else:
self[id(self)] += 1
standIn = ko.newSymbol(runNamespace() + '_fm' +
str(self[id(self)]))
self[(ko, f)] = standIn
ko.add(subj=f, pred=reason.representedBy, obj=standIn, why=dontAsk)
return standIn
def uriref(self):
return runNamespace() + "li" + ` self._id `
