Class: Phonology::RulesDSL

Inherits:
Object
  • Object
show all
Defined in:
lib/phonology/rule.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(array) ⇒ RulesDSL

Returns a new instance of RulesDSL.



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# File 'lib/phonology/rule.rb', line 7

def initialize(array)
  @array = array
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args, &block) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 11

def method_missing(sym, *args, &block)
  curr_sound.__send__(sym, *args, &block)
end

Instance Attribute Details

#array ⇒ Object (readonly)

Returns the value of attribute array.



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# File 'lib/phonology/rule.rb', line 5

def array
  @array
end

Instance Method Details

#apply(&block) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 15

def apply(&block)
  array.each_index.map do |index|
    @index = index
    instance_eval(&block)
    get_result
  end
end

#curr_sound ⇒ Object 



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# File 'lib/phonology/rule.rb', line 35

def curr_sound
  array[@index]
end

#delete(*args) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 23

def delete(*args)
  if !args.empty?
    curr_sound.delete(*args)
  else
    array[@index] = nil
  end
end

#devoice ⇒ Object 



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# File 'lib/phonology/rule.rb', line 51

def devoice
  curr_sound >> :voiced
end

#final? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/phonology/rule.rb', line 79

def final?
  @index == @max
end

#follows(*features) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 61

def follows(*features)
  return false if initial?
  features.flatten.each {|f| return false unless prev_sound.send(:"#{f}?")}
  true
end

#initial? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/phonology/rule.rb', line 75

def initial?
  @index == 0
end

#insert(*args) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 31

def insert(*args)
  @result = [curr_sound, Sound.new(*args)]
end

#next_sound(offset = 1) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 39

def next_sound(offset = 1)
  !final? && array[@index + offset]
end

#precedes(*features) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 55

def precedes(*features)
  return false if !next_sound
  features.flatten.each {|f| return false unless next_sound.send(:"#{f}?")}
  true
end

#prev_sound(offset = 1) ⇒ Object 



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# File 'lib/phonology/rule.rb', line 43

def prev_sound(offset = 1)
  !initial? && array[@index - offset]
end

#syllable_final? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/phonology/rule.rb', line 71

def syllable_final?
  syllable.coda.last == curr_sound
end

#syllable_initial? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/phonology/rule.rb', line 67

def syllable_initial?
  syllable.onset.first == curr_sound
end

#voice ⇒ Object 



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# File 'lib/phonology/rule.rb', line 47

def voice
  curr_sound << :voiced
end