2018-06-24 | Paul Boddie | raw annotate files changeset graph | Changed target handling in the invocation code to eliminate superfluous temporary storage for targets and to treat context and target storage separately. Changed access instruction generation to expose the accessor test instructions more readily to the translator, with the error conversion being introduced by the translator. This allows the presence of accessor tests to be considered by the translator and for such tests to be included in generated code where they might otherwise be optimised away. Fixed detection of context temporary variables. Simplified the tracking of target and context temporary usage. |
1 class A: 2 def __init__(self, x): 3 self.x = x 4 def __sub__(self, other): 5 return self.x - other.x 6 7 class B: 8 def __init__(self, x): 9 self.x = x 10 def __rsub__(self, other): 11 return other.x - self.x 12 13 class C: 14 def __init__(self, x): 15 self.x = x 16 17 a = A(10) 18 b = B(5) 19 c = C(3) 20 21 print a - b # 5 22 print c - b # -2 23 print a - c # 7 24 25 try: 26 print b - c # should raise an exception 27 except TypeError: 28 print "b - c: b and c do not respectively support the __sub__ and __rsub__ operations"