def inner(expr, env):
if sequence.is_last_expr(expr):
return self._eval(sequence.first_expr(expr), env)
if not self._eval(sequence.first_expr(expr), env):
return Boolean(False)
return inner(sequence.rest_exprs(expr), env)
def inner(expr, env):
if sequence.is_last_expr(expr):
return self._eval(sequence.first_expr(expr), env)
first_value = self._eval(sequence.first_expr(expr), env)
if first_value:
return first_value
return inner(sequence.rest_exprs(expr), env)
def _eval_sequence(self, expressions, env):
if sequence.is_last_expr(expressions):
return self._eval(sequence.first_expr(expressions), env)
else:
self._eval(sequence.first_expr(expressions), env)
return self._eval_sequence(sequence.rest_exprs(expressions), env)