| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.freemarker.docgen.core; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.Map; |
| |
| import freemarker.core.Environment; |
| import freemarker.template.TemplateDirectiveBody; |
| import freemarker.template.TemplateDirectiveModel; |
| import freemarker.template.TemplateException; |
| import freemarker.template.TemplateModel; |
| |
| abstract class FilterDirective implements TemplateDirectiveModel { |
| protected FilterDirective() { |
| } |
| |
| @Override |
| public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body) throws |
| TemplateException, IOException { |
| if (!params.isEmpty()) { |
| throw new TemplateException("This directive doesn't support any parameters", env); |
| } |
| if (loopVars.length != 0) { |
| throw new TemplateException("This directive doesn't support any loop variables", env); |
| } |
| if (body == null) { |
| return; |
| } |
| body.render(wrapWriter(env.getOut())); |
| } |
| |
| protected abstract Writer wrapWriter(Writer out); |
| } |