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Check Hierarchy Traversal Order

fishbulb15

I currently use a trigger on a schematic check to run some net property checks, this tool will need to ensure that if the tool "Check --> Hierarchy" is run that the tree traversal is done in a specific order. Looking through the documentation I could not determine the method of tree traversal done using this built-in method. Could you point me to some documentation or if you can direct me as to the method used to run through, that would be helpful in determining if I would need to generate my own method to traverse the hierarchy in the order I need. My need would be to traverse the tree Post-Order or Level-Order where it would perform the deepest nodes first.

Thank you,

Mitchell Cohen

  • Mitchell,

    Whilst I could guess the order it probably does it in, or even do some experiments to find that out, or even check the source code to see what order it actually does it in, the danger is that unless it's documented as being in some particular order, there's  a chance that some future optimisation might mean that this order changes.

    So you would have to contact customer support to ask for the order to be documented - such that it then becomes a constraint on the software. Of course, there's a possibility that R&D might decide they don't want to be forced to fix an order in case it prevents them making changes in the future (for perfectly valid reasons).

    Regards,

    Andrew.

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