def walk_bv_comp(self, formula, args, **kwargs):
cond = z3.Z3_mk_eq(self.ctx.ref(), args[0], args[1])
z3.Z3_inc_ref(self.ctx.ref(), cond)
then_ = z3.Z3_mk_numeral(self.ctx.ref(), "1", self.z3BitVecSort(1).ast)
z3.Z3_inc_ref(self.ctx.ref(), then_)
else_ = z3.Z3_mk_numeral(self.ctx.ref(), "0", self.z3BitVecSort(1).ast)
z3.Z3_inc_ref(self.ctx.ref(), else_)
z3term = z3.Z3_mk_ite(self.ctx.ref(), cond, then_, else_)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
# De-Ref since this is handled internally by Z3
z3.Z3_dec_ref(self.ctx.ref(), cond)
z3.Z3_dec_ref(self.ctx.ref(), then_)
z3.Z3_dec_ref(self.ctx.ref(), else_)
return z3term
def walk_bv_ror(self, formula, args, **kwargs):
bvsort = self.z3BitVecSort(formula.bv_width())
step = z3.Z3_mk_numeral(self.ctx.ref(),
str(formula.bv_rotation_step()), bvsort.ast)
z3term = z3.Z3_mk_ext_rotate_right(self.ctx.ref(), args[0], step)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
return z3term
def walk_real_constant(self, formula, **kwargs):
frac = formula.constant_value()
n, d = frac.numerator, frac.denominator
rep = str(n) + "/" + str(d)
z3term = z3.Z3_mk_numeral(self.ctx.ref(), rep, self.z3RealSort.ast)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
return z3term
def walk_bv_constant(self, formula, **kwargs):
value = formula.constant_value()
z3term = z3.Z3_mk_numeral(self.ctx.ref(),
str(value),
self.z3BitVecSort(formula.bv_width()).ast)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
return z3term
def walk_int_constant(self, formula, **kwargs):
assert is_pysmt_integer(formula.constant_value())
const = str(formula.constant_value())
z3term = z3.Z3_mk_numeral(self.ctx.ref(),
const,
self.z3IntSort.ast)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
return z3term
def walk_algebraic_constant(self, formula, **kwargs):
rep = str(formula.constant_value())
z3term = z3.Z3_mk_numeral(self.ctx.ref(), rep, self.z3RealSort.ast)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
return z3term
