Fresh start

1 files changed, 32 insertions, 0 deletions

diff --git a/jni/ruby/lib/rexml/syncenumerator.rb b/jni/ruby/lib/rexml/syncenumerator.rb
new file mode 100644
index 0000000..11609bd
--- /dev/null
+++ b/jni/ruby/lib/rexml/syncenumerator.rb
@@ -0,0 +1,32 @@
+module REXML
+  class SyncEnumerator
+    include Enumerable
+
+    # Creates a new SyncEnumerator which enumerates rows of given
+    # Enumerable objects.
+    def initialize(*enums)
+      @gens = enums
+      @length = @gens.collect {|x| x.size }.max
+    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
+      @length.times {|i|
+        yield @gens.collect {|x| x[i]}
+      }
+      self
+    end
+  end
+end