Class: TurkishRanges::TrText

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/turkish_ranges/tr_text.rb

Overview

Represents a character sequence in Turkish language

Constant Summary collapse

MAP =

Using for character mapping

'DHJPTVdhiptvÈğıØşÝèĠIJøŠý'.chars.zip('ÇĞİÖŞÜçğıöşüDHJPTVdhiptv'.chars).to_h.freeze
ASCII_ALPHABET =

Using for calculating character codes

'ABCÇDEFGĞHIİJKLMNOÖPQRSŞTUÜVWXYZabcçdefgğhıijklmnoöpqrsştuüvwxyz'
.chars.map.with_index { [_1, _2 + 65] }.to_h.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(letters) ⇒ TrText

A new instance of TrText

Parameters:

  • letters (String) 


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# File 'lib/turkish_ranges/tr_text.rb', line 23

def initialize(letters)
  @letters = letters
  @letters_length = letters.length
end

Instance Attribute Details

#letters ⇒ String (readonly)

Sets the letters for the ‘TrText`.

Returns:

  • (String) —

    character sequence



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# File 'lib/turkish_ranges/tr_text.rb', line 10

def letters
  @letters
end

#letters_length ⇒ String (readonly)

Sets the letters for the ‘TrText`.

Returns:

  • (String) —

    character sequence



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# File 'lib/turkish_ranges/tr_text.rb', line 10

def letters_length
  @letters_length
end

Instance Method Details

#<=>(other) ⇒ Integer

Using for object comparison

Parameters:

Returns:

  • (Integer) —

    1, 0 or -1



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# File 'lib/turkish_ranges/tr_text.rb', line 32

def <=>(other)
  return 0 if letters == other.letters

  compare_chars(zip_chars_with(other))
end

#code ⇒ Integer

Calculates codepoint of a single characacter based on ASCII_ALPHABET

Returns:

  • (Integer) 


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# File 'lib/turkish_ranges/tr_text.rb', line 41

def code
  ASCII_ALPHABET[letters] || letters&.ord.to_i
end

#inspect ⇒ String

Overloading Object#inspect

Returns:

  • (String) 


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# File 'lib/turkish_ranges/tr_text.rb', line 72

def inspect
  letters
end

#succ ⇒ TrText

Next successor character sequence

Returns:



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# File 'lib/turkish_ranges/tr_text.rb', line 58

def succ
  TrText.new(succ_letter)
end

#succ_letter ⇒ String

Calculates the successor string from ‘letters`

Returns:

  • (String) 


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# File 'lib/turkish_ranges/tr_text.rb', line 48

def succ_letter
  successor = letters.succ
  change = successor.delete(letters)
  successor.sub!(change, MAP[change]) if change.length == 1 && MAP.key?(change)
  successor
end

#to_s ⇒ String

Overloading Object#to_s

Returns:

  • (String) 


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# File 'lib/turkish_ranges/tr_text.rb', line 65

def to_s
  letters
end