[Ironpython-users] ErrorListener

Markus Schaber m.schaber at 3s-software.com
Wed Oct 12 16:25:59 CEST 2011

Hi, Keith,

Von: Keith Rome [mailto:rome at Wintellect.com]
> Is there a notion of "Warning" in context of execution? My understanding is
> that during execution you either get a single error, or you get the
> resulting value (or void/null if the script does not eval to a return
> value). Any print() messages are routed to the stdout stream which you can
> also intercept via the script engine's IO property. Perhaps that kind of
> trace output is what you are looking for?

At least Python has that notion, and it has been ported to IronPython.

With switches like -t, -b, -3 and -Wall for IPy.exe, corresponding to the options IndentationInconsistencySeverity, BytesWarning, WarnPy3k and WarningFilters passed to Python.CreateEngine(), some of those warnings can be enabled.

While -t only has effect during compilation, -3 and -Wall trigger some warnings during execution (I'm not sure about -b.)

But it seems that those runtime warnings are handled completely inside the python warnings framework, and there the default is simply to write the warning to stdout. I guess I have to override the warnings.showwarning method (as it is documented for python) from hosting environment to achieve what I want.

Best regards

Markus Schaber
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