diff options
Diffstat (limited to 'jni/ruby/lib/rexml/syncenumerator.rb')
-rw-r--r-- | jni/ruby/lib/rexml/syncenumerator.rb | 32 |
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 |