def walk_int_constant(self, formula, **kwargs):
assert type(formula.constant_value()) == int or \
type(formula.constant_value()) == long
rep = str(formula.constant_value())
res = libyices.yices_parse_rational(String(rep))
self._check_term_result(res)
return res
def walk_symbol(self, formula, **kwargs):
symbol_type = formula.symbol_type()
var_type = self._type_to_yices(symbol_type)
term = libyices.yices_new_uninterpreted_term(var_type)
libyices.yices_set_term_name(term, String(formula.symbol_name()))
self._check_term_result(term)
return term
def declare_variable(self, var):
if not var.is_symbol(): raise TypeError
if var.symbol_name() not in self.symbol_to_decl:
tp = self._type_to_yices(var.symbol_type())
decl = libyices.yices_new_uninterpreted_term(tp)
libyices.yices_set_term_name(decl, String(var.symbol_name()))
self.symbol_to_decl[var] = decl
self.decl_to_symbol[decl] = var
def walk_real_constant(self, formula, **kwargs):
assert type(formula.constant_value()) == Fraction
frac = formula.constant_value()
n,d = frac.numerator, frac.denominator
rep = str(n) + "/" + str(d)
res = libyices.yices_parse_rational(String(rep))
self._check_term_result(res)
return res
def walk_int_constant(self, formula, args):
assert type(formula.constant_value()) == int or \
type(formula.constant_value()) == long
rep = str(formula.constant_value())
return libyices.yices_parse_rational(String(rep))
def _bound_symbol(self, var):
symbol_type = var.symbol_type()
var_type = self._type_to_yices(symbol_type)
term = libyices.yices_new_variable(var_type)
libyices.yices_set_term_name(term, String(var.symbol_name()))
return term