Class: FrequencyEnumerator::Composer

Inherits:
Object
  • Object
show all
Defined in:
lib/frequency_enumerator/composer.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params = {}) ⇒ Composer

Returns a new instance of Composer.



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# File 'lib/frequency_enumerator/composer.rb', line 5

def initialize(params = {})
  @endianess = params[:endianess]
end

Instance Attribute Details

#endianess ⇒ Object (readonly)

Returns the value of attribute endianess.



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# File 'lib/frequency_enumerator/composer.rb', line 3

def endianess
  @endianess
end

Class Method Details

.compose(bit_array) ⇒ Object 



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# File 'lib/frequency_enumerator/composer.rb', line 9

def self.compose(bit_array)
  new.compose(bit_array)
end

Instance Method Details

#big_endian? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/frequency_enumerator/composer.rb', line 27

def big_endian?
  @endianess == :big
end

#compose(bit_array) ⇒ Object 



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# File 'lib/frequency_enumerator/composer.rb', line 13

def compose(bit_array)
  raise_if_non_binary_elements(bit_array)

  bit_array = bit_array.reverse if big_endian?

  bit_array.each_with_index.inject(0) do |sum, (bit, index)|
    sum + (bit << index)
  end
end

#little_endian? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/frequency_enumerator/composer.rb', line 23

def little_endian?
  @endianess == :little
end