This commit was manufactured by cvs2svn to create branch 'ruby_1_8'.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@8485 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 33 insertions, 0 deletions

diff --git a/lib/rexml/syncenumerator.rb b/lib/rexml/syncenumerator.rb
new file mode 100644
index 000000000..955e006cb
--- /dev/null
+++ b/lib/rexml/syncenumerator.rb
@@ -0,0 +1,33 @@
+module REXML
+  class SyncEnumerator
+    include Enumerable
+
+    # Creates a new SyncEnumerator which enumerates rows of given
+    # Enumerable objects.
+    def initialize(*enums)
+      @gens = enums
+      @biggest = @gens[0]
+      @gens.each {|x| @biggest = x if x.size > @biggest.size }
+    end
+
+    # Returns the number of enumerated Enumerable objects, i.e. the size
+    # of each row.
+    def size
+      @gens.size
+    end
+
+    # Returns the number of enumerated Enumerable objects, i.e. the size
+    # of each row.
+    def length
+      @gens.length
+    end
+
+    # Enumerates rows of the Enumerable objects.
+    def each
+      @biggest.zip( *@gens ) {|a|
+        yield(*a[1..-1])
+      }
+      self
+    end
+  end
+end