// Copyright 2017 Jeremy Wall // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. use std::rc::Rc; use std::io::Write; use std::io::Result; use build::Val; pub trait Converter { fn convert(&self, vs: Rc, w: Box) -> Result<()>; }