# coding: utf8
from __future__ import unicode_literals

from ..char_classes import ALPHA, ALPHA_LOWER, ALPHA_UPPER, QUOTES, HYPHENS
from ..char_classes import LIST_ELLIPSES, LIST_ICONS

_hyphens_no_dash = HYPHENS.replace('-', '').strip('|').replace('||', '')
_infixes = (LIST_ELLIPSES + LIST_ICONS +
            [r'(?<=[{}])\.(?=[{}])'.format(ALPHA_LOWER, ALPHA_UPPER),
             r'(?<=[{a}])[,!?/\(\)]+(?=[{a}])'.format(a=ALPHA),
             r'(?<=[{a}{q}])[:<>=](?=[{a}])'.format(a=ALPHA, q=QUOTES),
             r'(?<=[{a}])--(?=[{a}])'.format(a=ALPHA),
             r'(?<=[{a}]),(?=[{a}])'.format(a=ALPHA),
             r'(?<=[{a}])([{q}\)\]\(\[])(?=[\-{a}])'.format(a=ALPHA, q=QUOTES),
             r'(?<=[{a}])[?";:=,.]*(?:{h})(?=[{a}])'.format(a=ALPHA,
                                                            h=_hyphens_no_dash),
             r'(?<=[0-9])-(?=[0-9])'])

TOKENIZER_INFIXES = _infixes