Initial revision

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3925 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 35 insertions, 0 deletions

diff --git a/lib/rexml/node.rb b/lib/rexml/node.rb
new file mode 100644
index 0000000000..41d9eee43b
--- /dev/null
+++ b/lib/rexml/node.rb
@@ -0,0 +1,35 @@
+require "rexml/parseexception"
+
+module REXML
+	# Represents a node in the tree.  Nodes are never encountered except as
+	# superclasses of other objects.  Nodes have siblings.
+	module Node
+		# @return the next sibling (nil if unset)
+		def next_sibling_node
+			return nil if @parent.nil?
+			@parent[ @parent.index(self) + 1 ]
+		end
+
+		# @return the previous sibling (nil if unset)
+		def previous_sibling_node
+			return nil if @parent.nil?
+			ind = @parent.index(self)
+			return nil if ind == 0
+			@parent[ ind - 1 ]
+		end
+
+		def to_s indent=-1
+			rv = ""
+			write rv,indent
+			rv
+		end
+
+		def indent to, ind
+			to << " "*ind unless ind<1
+		end
+
+		def parent?
+			false;
+		end
+	end
+end