def value(context, idx, ptype):
if ptype == AtomicPredicate.T_TAG:
return context[idx][1]
elif ptype == AtomicPredicate.T_CHAR:
return context[idx][0]
else:
return char_class(context[idx][0])
def value(context, idx, ptype):
if ptype == AtomicPredicate.T_TAG:
return context[idx][1]
elif ptype == AtomicPredicate.T_CHAR:
return context[idx][0]
else:
return char_class(context[idx][0])
def test(self, context, idx):
"""Test the predicate under context.
@type context: a list of (character, tag) tuples.
@param context: the context
@type idx: integer
@param idx: the index to the context
@return: the value of the predicate
"""
o, t, v, n = self._test
res = True
if idx + o >= 0 and idx + o < len(context):
char, tag = context[idx + o]
if t == self.T_TAG:
res = tag == v
elif t == self.T_CHAR:
res = char == v
else:
res = char_class(char) == v
if n:
res = not res
return res
def test(self, context, idx):
"""Test the predicate under context.
@type context: a list of (character, tag) tuples.
@param context: the context
@type idx: integer
@param idx: the index to the context
@return: the value of the predicate
"""
o, t, v, n = self._test
res = True
if idx + o >= 0 and idx + o < len(context):
char, tag = context[idx + o]
if t == self.T_TAG:
res = tag == v
elif t == self.T_CHAR:
res = char == v
else:
res = char_class(char) == v
if n:
res = not res
return res