Add bin and edit workflow

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

@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+module TTFunk
+  # Array with indexing starting at 1.
+  class OneBasedArray
+    include Enumerable
+
+    # @overload initialize(size)
+    #   @param size [Integer] number of entries in this array
+    # @overload initialize(entries)
+    #   @param entries [Array] an array to take entries from
+    def initialize(size = 0)
+      @entries = Array.new(size)
+    end
+
+    # Get element by index.
+    #
+    # @param idx [Integer]
+    # @return [any, nil]
+    # @raise IndexError if index is 0
+    def [](idx)
+      if idx.zero?
+        raise IndexError,
+          "index #{idx} was outside the bounds of the array"
+      end
+
+      entries[idx - 1]
+    end
+
+    # Number of elements in this array.
+    #
+    # @return [Integer]
+    def size
+      entries.size
+    end
+
+    # Convert to native array.
+    #
+    # @return [Array]
+    def to_ary
+      entries
+    end
+
+    # Iterate over elements.
+    #
+    # @yieldparam element [any]
+    # @return [void]
+    def each(&block)
+      entries.each(&block)
+    end
+
+    private
+
+    attr_reader :entries
+  end
+end