class TwitterCldr::Tokenizers::UnicodeRegexTokenizer

Public Instance Methods

tokenize(pattern) click to toggle source
# File lib/twitter_cldr/tokenizers/unicode_regex/unicode_regex_tokenizer.rb, line 13
def tokenize(pattern)
  tokenizer.tokenize(pattern)
end

Private Instance Methods

tokenizer() click to toggle source
# File lib/twitter_cldr/tokenizers/unicode_regex/unicode_regex_tokenizer.rb, line 19
def tokenizer
  @tokenizer ||= begin
    recognizers = [
      # The variable name can contain letters and digits, but must start with a letter.
      TokenRecognizer.new(:variable, /\$\w[\w\d]*/),
      TokenRecognizer.new(:character_set, /\[:[\w\s=]+:\]|\\p\{[\w\s=]+\}/),  # [:Lu:] or \p{Lu} or \p{Sentence_Break=CF}
      TokenRecognizer.new(:negated_character_set, /\[:\^[\w\s=]+:\]|\\P\{[\w\s=]+\}/),  #[:^Lu:] or \P{Lu}
      TokenRecognizer.new(:unicode_char, /\\u\{?[a-fA-F0-9]{1,6}\}?/),
      TokenRecognizer.new(:multichar_string, /\{\w+\}/u),

      TokenRecognizer.new(:escaped_character, /\\./),
      TokenRecognizer.new(:negate, /\^/),
      TokenRecognizer.new(:ampersand, /&/),
      TokenRecognizer.new(:pipe, /\|/),
      TokenRecognizer.new(:dash, /-/),

      # stuff that shouldn't be converted to codepoints
      TokenRecognizer.new(:special_char, /\{\d,?\d?\}|[$?:{}()*+\.,\/\\]/),

      TokenRecognizer.new(:open_bracket, /\[/),
      TokenRecognizer.new(:close_bracket, /\]/),

      TokenRecognizer.new(:string, //u) do |val|
        val == " " ? val : val.strip
      end
    ]

    Tokenizer.new(recognizers)
  end
end