Add bin and edit workflow

bin/gems/rexml-3.4.4/lib/rexml/parsers/ultralightparser.rb

@@ -0,0 +1,57 @@
+# frozen_string_literal: false
+require_relative 'streamparser'
+require_relative 'baseparser'
+
+module REXML
+  module Parsers
+    class UltraLightParser
+      def initialize stream
+        @stream = stream
+        @parser = REXML::Parsers::BaseParser.new( stream )
+      end
+
+      def add_listener( listener )
+        @parser.add_listener( listener )
+      end
+
+      def rewind
+        @stream.rewind
+        @parser.stream = @stream
+      end
+
+      def parse
+        root = context = []
+        while true
+          event = @parser.pull
+          case event[0]
+          when :end_document
+            break
+          when :end_doctype
+            context = context[1]
+          when :start_element, :start_doctype
+            context << event
+            event[1,0] = [context]
+            context = event
+          when :end_element
+            context = context[1]
+          else
+            context << event
+          end
+        end
+        root
+      end
+    end
+
+    # An element is an array.  The array contains:
+    #  0                        The parent element
+    #  1                        The tag name
+    #  2                        A hash of attributes
+    #  3..-1    The child elements
+    # An element is an array of size > 3
+    # Text is a String
+    # PIs are [ :processing_instruction, target, data ]
+    # Comments are [ :comment, data ]
+    # DocTypes are DocType structs
+    # The root is an array with XMLDecls, Text, DocType, Array, Text
+  end
+end