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expose nth over API, change _getitem_ in python bindings to use nth instead of at, add 'at' operator for the purpose of the previous semantics

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-03-17 11:23:01 -07:00
parent f534f79a21
commit 834cf962a1
7 changed files with 66 additions and 1 deletions
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5
src/api/python/z3/z3.py
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@ -9941,6 +9941,11 @@ class SeqRef(ExprRef):
return Concat(other, self)
def __getitem__(self, i):
if _is_int(i):
i = IntVal(i, self.ctx)
return SeqRef(Z3_mk_seq_nth(self.ctx_ref(), self.as_ast(), i.as_ast()), self.ctx)
def at(self, i):
if _is_int(i):
i = IntVal(i, self.ctx)
return SeqRef(Z3_mk_seq_at(self.ctx_ref(), self.as_ast(), i.as_ast()), self.ctx)