def get_rand_rhs(self, lhs):
if not isinstance(lhs, Nonterminal): lhs = Nonterminal(lhs.upper())
r = random.random()
s = 0
for i in self._index[lhs]:
p = self._productions[i]
s += p.prob()
if s > r: return p
return None
def get_rand_rhs(self,lhs):
if not isinstance(lhs,Nonterminal): lhs = Nonterminal(lhs.upper())
r = random.random()
s = 0
for i in self._index[lhs]:
p = self._productions[i]
s += p.prob()
if s > r: return p
return None
def get_prob_rhs(self, lhs, prob):
if not isinstance(lhs, Nonterminal): lhs = Nonterminal(lhs.upper())
rhs = []
if prob > 1 and prob < 100: prob /= 100
p = 0.0
for r in self._index[lhs]:
rule = self._productions[r]
p += rule.prob()
rhs.append(rule)
if p > prob: break
return rhs
def get_prob_rhs(self,lhs,prob):
if not isinstance(lhs,Nonterminal): lhs = Nonterminal(lhs.upper())
rhs = []
if prob > 1 and prob < 100: prob /= 100
p = 0.0
for r in self._index[lhs]:
rule = self._productions[r]
p += rule.prob()
rhs.append(rule)
if p > prob: break
return rhs
def get_max_rhs(self, lhs):
if not isinstance(lhs, Nonterminal): lhs = Nonterminal(lhs.upper())
return self._productions[self._index[lhs][0]]
def get_rand_rhs(self, lhs):
if not isinstance(lhs, Nonterminal): lhs = Nonterminal(lhs.upper())
return self._productions[random.choice(self._index[lhs])]
def get_all_rhs(self, lhs=''):
if not lhs: return self._productions
if not isinstance(lhs, Nonterminal): lhs = Nonterminal(lhs.upper())
return [self._productions[n] for n in self._index[lhs]]
def get_all_rhs(self,lhs=''):
if not lhs: return self._productions
if not isinstance(lhs,Nonterminal): lhs = Nonterminal(lhs.upper())
return [self._productions[n] for n in self._index[lhs]]
def get_max_rhs(self,lhs):
if not isinstance(lhs,Nonterminal): lhs = Nonterminal(lhs.upper())
return self._productions[self._index[lhs][0]]
def get_rand_rhs(self,lhs):
if not isinstance(lhs,Nonterminal): lhs = Nonterminal(lhs.upper())
return self._productions[random.choice(self._index[lhs])]