Sha256: 17ec52480f6ea01286375962047a2fee4bdb6fcf508396f0ad5c9661638f558e
Contents?: true
Size: 667 Bytes
Versions: 28
Compression:
Stored size: 667 Bytes
Contents
module Plutonium
module Lib
class BitFlags
delegate :sum, to: :indices
def initialize(*flags)
@map = flags.each_with_index.map { |flag, index| [flag, 2.pow(index)] }.to_h
end
def set?(value, *flags)
check = bits(*flags)
value & check == check
end
def extract(value)
@map.select { |_flag, bit| value & bit == bit }.keys
end
def [](*flags)
bits(*flags)
end
def bits(*flags)
@map.slice(*flags).values.sum
end
def flags
@flags ||= @map.keys
end
def indices
@indices ||= @map.values
end
end
end
end
Version data entries
28 entries across 28 versions & 1 rubygems