def treeToDeriv(tree):
if type(tree[1]) is not tuple:
r = Rule()
r.setup(tree[0], [tree[1],], 1.0)
return [r,]
else:
r = Rule()
rhs = [x[0] for x in tree[1:]]
assert(len(rhs) <= 2), "Non-binary rule: %s" % str(rhs)
r.setup(tree[0], rhs, 1.0)
res = [r,]
for subt in tree[1:]:
res += treeToDeriv(subt)
return res
def parseFail(self, sentence):
top = self.top
topBar = "@%s" % top
lhs = top
ana = self.makeAnalysis(top=top, initial=self.grammar.depth())
for word in sentence:
posInsRule = Rule()
posInsRule.setup(lhs, ["FW", topBar], 1.0)
lhs = topBar
posInsRule.terminal = False
ana = ana.extend(posInsRule, None, None, self, doFOM=False)
wordInsRule = Rule()
wordInsRule.setup("FW", [word,], 1.0)
wordInsRule.terminal = True
ana = ana.extend(wordInsRule, None, None, self, doFOM=False)
endRule = Rule()
endRule.setup(topBar, [], 1.0)
endRule.terminal = True
ana = ana.extend(endRule, None, None, self, doFOM=False)
return ana
