[erlang-bugs] Does 'ic' (the CORBA IDL compiler) support recursive types?

[Niclas Eklund]

Hello!

It's correct, IC doesn't support recursive types. The only way is to avoid
using rescursive structures (i.e. change the IDL specification). Note,
Anonymous Types was deprecated in CORBA-2.4:

 sequence <A> next; // Deprecated.

Unless you must represent a tree, you can use:

  struct A {
    long i;
  };
  typedef sequence<A> ASeq;

After a quick search in my mail boxes I found that the last time someone
asked about rescursive types was back in Nov 2003. As you understand,
since it's seldom used and one can solve this in other ways, it hasn't
been a high prio IC extension.

/Niclas

On Tue, 23 Oct 2007, Sebastian Egner wrote:

> Hello,
> 
> This is not strictly a bug report, but a question for clarification: Is 
> it correct that the 'ic' IDL compiler does
> not support recursive types? Forward declarations or self-references 
> result in a "syntax error"/"undeclared identifier":
> 
> enum NodeType { Empty, Tuple };
> 
> // union Tree; // doesn't help either
> 
> union Tree switch (NodeType) {
> case NT_Tuple: sequence< Tree > p;
> };
> 
> Can't find the restriction mentioned in the manual.
> 
> Sebastian
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