1 files changed, 127 insertions, 0 deletions
diff --git a/ruby_1_9_3/lib/rdoc/markup/document.rb b/ruby_1_9_3/lib/rdoc/markup/document.rb
new file mode 100644
index 0000000000..7077f357d3
--- /dev/null
+++ b/ruby_1_9_3/lib/rdoc/markup/document.rb
@@ -0,0 +1,127 @@
+##
+# A Document containing lists, headings, paragraphs, etc.
+
+class RDoc::Markup::Document
+
+  ##
+  # The file this document was created from.  See also
+  # RDoc::ClassModule#add_comment
+
+  attr_accessor :file
+
+  ##
+  # The parts of the Document
+
+  attr_reader :parts
+
+  ##
+  # Creates a new Document with +parts+
+
+  def initialize *parts
+    @parts = []
+    @parts.push(*parts)
+
+    @file = nil
+  end
+
+  ##
+  # Appends +part+ to the document
+
+  def << part
+    case part
+    when RDoc::Markup::Document then
+      unless part.empty? then
+        parts.push(*part.parts)
+        parts << RDoc::Markup::BlankLine.new
+      end
+    when String then
+      raise ArgumentError,
+            "expected RDoc::Markup::Document and friends, got String" unless
+        part.empty?
+    else
+      parts << part
+    end
+  end
+
+  def == other # :nodoc:
+    self.class == other.class and
+      @file == other.file and
+      @parts == other.parts
+  end
+
+  ##
+  # Runs this document and all its #items through +visitor+
+
+  def accept visitor
+    visitor.start_accepting
+
+    @parts.each do |item|
+      case item
+      when RDoc::Markup::Document then # HACK
+        visitor.accept_document item
+      else
+        item.accept visitor
+      end
+    end
+
+    visitor.end_accepting
+  end
+
+  ##
+  # Does this document have no parts?
+
+  def empty?
+    @parts.empty? or (@parts.length == 1 and merged? and @parts.first.empty?)
+  end
+
+  ##
+  # When this is a collection of documents (#file is not set and this document
+  # contains only other documents as its direct children) #merge replaces
+  # documents in this class with documents from +other+ when the file matches
+  # and adds documents from +other+ when the files do not.
+  #
+  # The information in +other+ is preferred over the receiver
+
+  def merge other
+    if empty? then
+      @parts = other.parts
+      return self
+    end
+
+    other.parts.each do |other_part|
+      self.parts.delete_if do |self_part|
+        self_part.file and self_part.file == other_part.file
+      end
+
+      self.parts << other_part
+    end
+
+    self
+  end
+
+  ##
+  # Does this Document contain other Documents?
+
+  def merged?
+    RDoc::Markup::Document === @parts.first
+  end
+
+  def pretty_print q # :nodoc:
+    start = @file ? "[doc (#{@file}): " : '[doc: '
+
+    q.group 2, start, ']' do
+      q.seplist @parts do |part|
+        q.pp part
+      end
+    end
+  end
+
+  ##
+  # Appends +parts+ to the document
+
+  def push *parts
+    self.parts.push(*parts)
+  end
+
+end
+