[MacRuby-devel] RoxorReturnFromBlockException

[Mike Moore]

It looks like MacRuby doesn't allow calling return in a block, which works
in 1.8 and 1.9. This looks to be by design, so I'm not sure if the team
wants a ticket created. Should I create a ticket?

----------------------------------------

def foo
  f = Proc.new { return "return from foo from inside Proc.new" }
  f.call # control leaves foo here
  return "return from foo"
end

def bar
  f = lambda { return "return from bar from inside lambda" }
  f.call # control does not leave bar here
  return "return from bar"
end

def baz
  f = proc { return "return from baz from inside proc" }
  f.call # control does not leave bar here in 1.8, but does in 1.9
  return "return from baz"
end

puts foo
puts bar
puts baz

----------------------------------------

$ ruby blocks.rb
return from foo from inside Proc.new
return from bar
return from baz
$ ruby19 blocks.rb
return from foo from inside Proc.new
return from bar
return from baz from inside proc
$ macruby blocks.rb
uncaught Objective-C/C++ exception...
terminate called after throwing an instance of
'RoxorReturnFromBlockException*'
Abort trap
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