criteria.py 文件源码

def visit_BoolOp(self, node):
        if type(node.op) not in (ast.And, ast.Or,):
            raise SyntaxError("%s is not supported" % type(node.op))

        many = list()
        for value in node.values:
            self.visit(value)
            obj = self.data.pop()
            criteria = obj if isinstance(obj, Criteria) else criteria_class.instance(Const.Bool, obj)
            many.append(criteria)

        if isinstance(node.op, ast.And):
            cls = (criteria_class.lookup(Const.And) if len(many) == 2 else criteria_class.lookup(Const.All))

        else:
            cls = (criteria_class.lookup(Const.Or) if len(many) == 2 else criteria_class.lookup(Const.Any))

        criteria = cls(*many)
        self.data.append(criteria)