light9 Changeset - e99bd20dad85

Changeset - e99bd20dad85

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David McClosky - 20 years ago 2005-06-18 18:09:34
dmcc@bigasterisk.com

curvecalc: fully catch and display errors in expr eval

1 file changed with 13 insertions and 11 deletions:

bin/curvecalc

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bin/curvecalc

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@@ @@ -146,17 +146,19 @@ class Subterm: @@
         make_attributes_from_args('submaster', 'subexpr')
     def scaled(self, t):
         subexpr_eval = self.subexpr.eval(t)
         # this stops an error that didn't used to happen. i think when
         # the expr is empty, subexpr_eval becomes None, so this zero
         # is ok
         if subexpr_eval is None:
             subexpr_eval = 0
         if isinstance(subexpr_eval, Submaster.Submaster):
             # if the expression returns a submaster, just return it
             return subexpr_eval
         else:
             # otherwise, return our submaster multiplied by the value returned
             return self.submaster * subexpr_eval
         # we prevent any exceptions from escaping, since they cause us to
         # stop sending levels
         try:
             if isinstance(subexpr_eval, Submaster.Submaster):
                 # if the expression returns a submaster, just return it
                 return subexpr_eval
             else:
                 # otherwise, return our submaster multiplied by the value
                 # returned
                 return self.submaster * subexpr_eval
         except Exception, e:
             dispatcher.send("expr_error", sender=self.subexpr, exc=str(e))
             return Submaster.Submaster('Error: %s' % str(e), temporary=True)
 class Subtermview(tk.Frame):
     def __init__(self,master,st,**kw):

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