[graalvm-users] Calling Ruby from R

[Rodrigo Botafogo]

Making a small change on the previous code where 'ruby_obj$to_s()' is
changed to 'ruby_obj at to_s()'

rf = Polyglot.eval("R", <<-R)
  function(ruby_obj) {
    print(ruby_obj);
    ruby_obj at to_s();
  }
R

h = [1, 2, 3, 4]
puts h

rf.call(h)

The result:

1
2
3
4
[polyglot value]
[1] 1 2 3 4
Error in ruby_obj at to_s :
  trying to get slot "to_s" from an object of a basic class ("integer")
with no slots

An error occurred while loading ./specs/tmp.rb.
Failure/Error: rf.call(h)

RuntimeError:
  Error in ruby_obj at to_s :
    trying to get slot "to_s" from an object of a basic class ("integer")
with no slots (RError)
      from
com.oracle.truffle.r.runtime.RErrorHandling.errorcallDfltWithCall(RErrorHandling.java:573)
      from
com.oracle.truffle.r.runtime.RErrorHandling.errorcallDflt(RErrorHandling.java:494)
      from com.oracle.truffle.r.runtime.RError.error0(RError.java:275)
      from com.oracle.truffle.r.runtime.RError.error(RError.java:194)
      from
com.oracle.truffle.r.runtime.nodes.RBaseNode.error(RBaseNode.java:358)
      from
com.oracle.truffle.r.nodes.access.AccessSlotNode.getSlot(AccessSlotNode.java:87)
      from
com.oracle.truffle.r.nodes.access.AccessSlotNodeGen.executeAndSpecialize(AccessSlotNodeGen.java:132)
      from
com.oracle.truffle.r.nodes.access.AccessSlotNodeGen.executeAccess(AccessSlotNodeGen.java:91)
      from
com.oracle.truffle.r.nodes.builtin.base.Slot.getSlot(Slot.java:157)
      from
com.oracle.truffle.r.nodes.builtin.base.SlotNodeGen.executeAndSpecialize(SlotNodeGen.java:66)
  Translated to internal error


-- 
Rodrigo Botafogo
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