#!/usr/bin/env python

#####################
## \file exceptions.py
## \verbatim
## Top contributors (to current version):
##   Andres Noetzli
## This file is part of the CVC4 project.
## Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
## in the top-level source directory) and their institutional affiliations.
## All rights reserved.  See the file COPYING in the top-level source
## directory for licensing information.\endverbatim
##
## \brief Catching CVC4 exceptions with the legacy Python API.
##
## A simple demonstration of catching CVC4 execptions with the legacy Python
## API.

import pycvc4
from pycvc4 import kinds
import sys


def main():
    slv = pycvc4.Solver()

    slv.setOption("produce-models", "true")

    # Setting an invalid option
    try:
        slv.setOption("non-existing", "true")
        return 1
    except:
        pass

    # Creating a term with an invalid type
    try:
        integer = slv.getIntegerSort()
        x = slv.mkConst("x", integer)
        invalidTerm = em.mkTerm(AND, x, x)
        slv.checkSat(invalidTerm)
        return 1
    except:
        pass

    # Asking for a model after unsat result
    try:
        slv.checkSat(slv.mkBoolean(False))
        slv.getModel()
        return 1
    except:
        pass

    return 0


if __name__ == '__main__':
    sys.exit(main())