Class: TwitterCldr::Parsers::UnicodeRegexParser::CharacterRange

Inherits:
Component
  • Object
show all
Defined in:
lib/twitter_cldr/parsers/unicode_regex/character_range.rb

Overview

Regex character range eg. a-z or 0-9 Can only exist in character classes

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(initial, final) ⇒ CharacterRange

Returns a new instance of CharacterRange.



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 16

def initialize(initial, final)
  @initial = initial
  @final = final
end

Instance Attribute Details

#final ⇒ Object (readonly)

Returns the value of attribute final.



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 14

def final
  @final
end

#initial ⇒ Object (readonly)

Returns the value of attribute initial.



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 14

def initial
  @initial
end

Instance Method Details

#codepoints ⇒ Object 



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 36

def codepoints
  to_set.to_full_a
end

#to_regexp_str ⇒ Object 



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 40

def to_regexp_str
  set_to_regex(to_set)
end

#to_s ⇒ Object 



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 44

def to_s
  "#{initial.to_s}-#{final.to_s}"
end

#to_set ⇒ Object 



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 30

def to_set
  TwitterCldr::Utils::RangeSet.new(
    [initial.to_set.to_full_a.first..final.to_set.to_full_a.first]
  )
end

#type ⇒ Object

Unfortunately, due to the ambiguity of having both character ranges and set operations in the same syntax (which both use the “-” operator and square brackets), we have to treat CharacterRange as both a token and an operand. This type method helps it behave like a token.



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# File 'lib/twitter_cldr/parsers/unicode_regex/character_range.rb', line 26

def type
  :character_range
end