# coding: utf8
from __future__ import unicode_literals

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

LIST_ICONS = [r"[\p{So}--[°]]"]

_currency = r"\$|¢|£|€|¥|฿"
_quotes = QUOTES.replace("'", "")

_prefixes = (
    [r"\+"]
    + LIST_PUNCT
    + LIST_ELLIPSES
    + LIST_QUOTES
    + LIST_ICONS
    + [r"[,.:](?=[{a}])".format(a=ALPHA)]
)

_suffixes = (
    LIST_PUNCT
    + LIST_ELLIPSES
    + LIST_QUOTES
    + LIST_ICONS
    + [
        r"(?<=[0-9])\+",
        r"(?<=°[FfCcKk])\.",
        r"(?<=[0-9])(?:{})".format(_currency),
        r"(?<=[0-9])(?:{})".format(UNITS),
        r"(?<=[{}{}{}(?:{})])\.".format(ALPHA_LOWER, r"%²\-\)\]\+", QUOTES, _currency),
        r"(?<=[{})])-e".format(ALPHA_LOWER),
    ]
)

_infixes = (
    LIST_ELLIPSES
    + LIST_ICONS
    + [
        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