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add push/pop to optimization context for convenience

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2014-09-01 14:58:58 -07:00
parent 75c114feab
commit 31f16d7aa4
5 changed files with 77 additions and 2 deletions
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8
src/api/python/z3.py
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@ -6382,6 +6382,14 @@ class Optimize(Z3PPObject):
"""Add objective function to minimize."""
return OptimizeObjective(Z3_optimize_minimize(self.ctx.ref(), self.optimize, arg.as_ast()))
def push(self):
"""create a backtracking point for added rules, facts and assertions"""
Z3_optimize_push(self.ctx.ref(), self.optimize)
def pop(self):
"""restore to previously created backtracking point"""
Z3_optimize_pop(self.ctx.ref(), self.optimize)
def check(self):
"""Check satisfiability while optimizing objective functions."""
return CheckSatResult(Z3_optimize_check(self.ctx.ref(), self.optimize))