Add bin and edit workflow

bin/gems/ttfunk-1.8.0/lib/ttfunk/bit_field.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+module TTFunk
+  # Bitfield represents a series of bits that can individually be toggled.
+  class BitField
+    # Serialized value.
+    # @return [Integer]
+    attr_reader :value
+
+    # @param value [Integer] initial value
+    def initialize(value = 0)
+      @value = value
+    end
+
+    # Set bit on.
+    #
+    # @param pos [Integer] bit position
+    # @return [void]
+    def on(pos)
+      @value |= 2**pos
+    end
+
+    # If bit on?
+    #
+    # @param pos [Integer]
+    # @return [Boolean]
+    def on?(pos)
+      (value & (2**pos)).positive?
+    end
+
+    # Set bit off.
+    #
+    # @param pos [Integer]
+    # @return [void]
+    def off(pos)
+      @value &= (2**Math.log2(value).ceil) - (2**pos) - 1
+    end
+
+    # Is bit off?
+    #
+    # @param pos [Integer]
+    # @return [Boolean]
+    def off?(pos)
+      !on?(pos)
+    end
+
+    # Get a duplicate of this bit field.
+    #
+    # @return [BitField]
+    def dup
+      self.class.new(value)
+    end
+  end
+end