Add bin and edit workflow

bin/gems/rexml-3.4.4/lib/rexml/child.rb

@@ -0,0 +1,96 @@
+# frozen_string_literal: false
+require_relative "node"
+
+module REXML
+  ##
+  # A Child object is something contained by a parent, and this class
+  # contains methods to support that.  Most user code will not use this
+  # class directly.
+  class Child
+    include Node
+    attr_reader :parent         # The Parent of this object
+
+    # Constructor.  Any inheritors of this class should call super to make
+    # sure this method is called.
+    # parent::
+    #   if supplied, the parent of this child will be set to the
+    #   supplied value, and self will be added to the parent
+    def initialize( parent = nil )
+      @parent = nil
+      # Declare @parent, but don't define it.  The next line sets the
+      # parent.
+      parent.add( self ) if parent
+    end
+
+    # Replaces this object with another object.  Basically, calls
+    # Parent.replace_child
+    #
+    # Returns:: self
+    def replace_with( child )
+      @parent.replace_child( self, child )
+      self
+    end
+
+    # Removes this child from the parent.
+    #
+    # Returns:: self
+    def remove
+      unless @parent.nil?
+        @parent.delete self
+      end
+      self
+    end
+
+    # Sets the parent of this child to the supplied argument.
+    #
+    # other::
+    #   Must be a Parent object.  If this object is the same object as the
+    #   existing parent of this child, no action is taken. Otherwise, this
+    #   child is removed from the current parent (if one exists), and is added
+    #   to the new parent.
+    # Returns:: The parent added
+    def parent=( other )
+      return @parent if @parent == other
+      @parent.delete self if defined? @parent and @parent
+      @parent = other
+    end
+
+    alias :next_sibling :next_sibling_node
+    alias :previous_sibling :previous_sibling_node
+
+    # Sets the next sibling of this child.  This can be used to insert a child
+    # after some other child.
+    #  a = Element.new("a")
+    #  b = a.add_element("b")
+    #  c = Element.new("c")
+    #  b.next_sibling = c
+    #  # => <a><b/><c/></a>
+    def next_sibling=( other )
+      parent.insert_after self, other
+    end
+
+    # Sets the previous sibling of this child.  This can be used to insert a
+    # child before some other child.
+    #  a = Element.new("a")
+    #  b = a.add_element("b")
+    #  c = Element.new("c")
+    #  b.previous_sibling = c
+    #  # => <a><b/><c/></a>
+    def previous_sibling=(other)
+      parent.insert_before self, other
+    end
+
+    # Returns:: the document this child belongs to, or nil if this child
+    # belongs to no document
+    def document
+      parent&.document
+    end
+
+    # This doesn't yet handle encodings
+    def bytes
+      document&.encoding
+
+      to_s
+    end
+  end
+end