def convert_in(group_names, name, terms):
negate = (terms[0][0] == 'negate')
s = ""
for c in terms[negate:]:
if c[0] == 'literal':
s = s + chr(c[1])
elif c[0] == 'range':
for i in range(c[1][0], c[1][1] + 1):
s = s + chr(i)
elif c[0] == 'category':
s = s + categories[c[1]]
else:
raise AssertionError("unknown option for 'in': %s" % c[0])
return Expression.Any(s, negate)
def AnyBut(s):
"""s -> match any character not in s"""
return Expression.Any(s, 1)
def Any(s):
"""(s) -> match any character in s"""
if len(s) == 1:
return Expression.Literal(s)
return Expression.Any(s, 0)