/*
* Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
*
* 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.
*/
package freemarker.core;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.TemplateNodeModel;
abstract class BuiltInForNode extends BuiltIn {
@Override
TemplateModel _eval(Environment env)
throws TemplateException {
TemplateModel model = target.eval(env);
if (model instanceof TemplateNodeModel) {
return calculateResult((TemplateNodeModel) model, env);
} else {
throw new NonNodeException(target, model, env);
}
}
abstract TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env)
throws TemplateModelException;
}