[IMP] osv: use iteration for expression negating

The current code when applying negative operator on an expression used
recursion which in extreme case is not best friend with python.

e.g: on instance with a lot of wharehouse, some simple action could lead
to a domain with lot of elements which could easiliy go over the python
maximum recursion limit.

This commit fixes this by replacing recursion with iteration.

We have a stack of negation flags and loop on each token of the domain
as follow :

- when we iterate on a leaf, it consumes the top negation flag,

- after a '!' operator, the top token negation is inversed,

- after an '&' or '|' operator, the top negation flag is duplicated on
  the top of the stack.

closes #9433
opw-653802

0 files changed, 0 insertions, 0 deletions