[Compiler-sig] Re: if .. elif:

[Jeremy Hylton]

>>>>> "FB" == Finn Bock <bckfnn@worldonline.dk> writes:

  FB> Hi Maybe I'm missing something, but I think the If() constructor
  FB> is a bit too simple to handle a list of 'elif:' parts.

  FB> 	If(expr test, stmt* body, stmt* orelse)

I was expecting to encode 'elif' parts as a series of new If()
constructors in the orelse slot.

if x == 1:
    print 1
elif x == 2:
    print 2
else:
    print 3

If(Compare(Lvalue(Name(x)), Num("1")),
   [Print(NULL, [Num("1")], False)],
   [If(Compare(Lvalue(Name(x)), Num("2")),
       [Print(NULL, [Num("2")], False)],
       [Print(NULL, [Num("3")], False)])])

Does that make sense?

(And, yuck, the Lvalue is a pain.)

Jeremy