#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from re import compile as re_compile, Pattern as REPattern, IGNORECASE as RE_IGNORECASE

class RE:

    KEY:REPattern = re_compile(r"^[a-z_][a-z0-9_]*$", RE_IGNORECASE)
    STRING_VARIABLES:REPattern = re_compile(r"\{([a-z_][a-z0-9_]*)\}", RE_IGNORECASE)
    SLASHES:REPattern = re_compile(r"[\\\/]+")
    NEW_LINES:REPattern = re_compile(r"\r\n|\r|\n")
    ROUTE:REPattern = re_compile(r"^(?:([a-z]+)\:)?([^\s]+)\s+(?:([^\s\@]+)\@([^\s]+)|([^\s]+))(?:\s+(.+))?$", RE_IGNORECASE)
    TO_REGULAR_EXPRESSION:REPattern = re_compile(r'[\(\)\{\}\/\\\.\-\+\*\^\$\?\|\!\<\>\r\n\t]')
    ROUTE_KEY:REPattern = re_compile(r'\\\{([a-z_][a-z0-9_]*)\\\}', RE_IGNORECASE)
    EXCEPTION:REPattern = re_compile(r'^\s*File "([^"]+)", line ([0-9]+), in ([^\n]+)(.*|[\r\n]*)*$')
    NEW_LINE:REPattern = re_compile(r'\r\n|[\r\n]')