# coding: utf8
from __future__ import unicode_literals

from ..char_classes import LIST_PUNCT, LIST_ELLIPSES, LIST_QUOTES, UNITS
from ..char_classes import ALPHA_LOWER, ALPHA_UPPER, ALPHA, HYPHENS, QUOTES


_currency = r"\$|¢|£|€|¥|฿|৳"
_quotes = QUOTES.replace("'", '')
_list_punct = LIST_PUNCT + '। ॥'.strip().split()


_prefixes = ([r'\+'] + _list_punct + LIST_ELLIPSES + LIST_QUOTES)

_suffixes = (_list_punct + LIST_ELLIPSES + LIST_QUOTES +
             [r'(?<=[0-9])\+',
              r'(?<=°[FfCcKk])\.',
              r'(?<=[0-9])(?:{})'.format(_currency),
              r'(?<=[0-9])(?:{})'.format(UNITS),
              r'(?<=[{}(?:{})])\.'.format('|'.join([ALPHA_LOWER, r'%²\-\)\]\+', QUOTES]), _currency)])

_infixes = (LIST_ELLIPSES +
            [r'(?<=[{}])\.(?=[{}])'.format(ALPHA_LOWER, ALPHA_UPPER),
             r'(?<=[{a}]),(?=[{a}])'.format(a=ALPHA),
             r'(?<=[{a}"])[:<>=](?=[{a}])'.format(a=ALPHA),
             r'(?<=[{a}])--(?=[{a}])'.format(a=ALPHA),
             r'(?<=[{a}]),(?=[{a}])'.format(a=ALPHA),
             r'(?<=[{a}])([{q}\)\]\(\[])(?=[\-{a}])'.format(a=ALPHA, q=_quotes)])


TOKENIZER_PREFIXES = _prefixes
TOKENIZER_SUFFIXES = _suffixes
TOKENIZER_INFIXES = _infixes