# $Id: block_pass.rb,v 1.2 2003/12/30 06:11:01 yuya Exp $

def foo(&block)
  bar(&block)
end

def bar(&block)
  block.call
end

foo {
  puts 'ok'
}

# NodeDump V0.1.7
# 
# NODE_BLOCK: 
#   NODE_NEWLINE:  [block_pass.rb:3]
#     NODE_DEFN:  method 8961 (foo)
#       NODE_SCOPE: 
#         NODE_BLOCK: 
#           NODE_ARGS:  count = 0
#             additional default values:
#           NODE_BLOCK_ARG:  (to LV 2 (block))
#           NODE_NEWLINE:  [block_pass.rb:4]
#             NODE_BLOCK_PASS: 
#               NODE_LVAR:  LV 2 (block)
#               NODE_FCALL:  to function: 8977 (bar)
#   NODE_NEWLINE:  [block_pass.rb:7]
#     NODE_DEFN:  method 8977 (bar)
#       NODE_SCOPE: 
#         NODE_BLOCK: 
#           NODE_ARGS:  count = 0
#             additional default values:
#           NODE_BLOCK_ARG:  (to LV 2 (block))
#           NODE_NEWLINE:  [block_pass.rb:8]
#             NODE_CALL:  to method: 5753 (call)
#             Receiver:
#               NODE_LVAR:  LV 2 (block)
#   NODE_NEWLINE:  [block_pass.rb:12]
#     NODE_ITER: 
#       Iterator:
#         NODE_FCALL:  to function: 8961 (foo)
#       Into:
#       NODE_NEWLINE:  [block_pass.rb:12]
#         NODE_FCALL:  to function: 6713 (puts)
#           Parameters:
#             NODE_ARRAY:  size = 1
#               NODE_STR:  "ok"