Module: FastBitset

Defined in:
lib/fast_bitset.rb,
lib/fast_bitset/version.rb,
ext/fast_bitset/fast_bitset.c

Constant Summary collapse

VERSION = 
"0.0.1"

Class Method Summary collapse

Class Method Details

.pure_bitstring_to_ids(value) ⇒ Object 



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# File 'lib/fast_bitset.rb', line 5

def self.pure_bitstring_to_ids(value)
  unless value.is_a?(String)
    raise TypeError.new("wrong argument type #{value.class} (expected String)")
  end
  offset = 0
  ids    = []
  return ids if value.nil?
  value.each_byte do |byte|
    7.downto(0) do |i|
      value = (1<<i)
      ids << offset if (value & byte) == value
      offset += 1
    end
  end
  ids
end