| /* |
| * 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 freemarker.core; |
| |
| import freemarker.template.TemplateCollectionModel; |
| import freemarker.template.TemplateHashModelEx; |
| import freemarker.template.TemplateModel; |
| import freemarker.template.TemplateModelException; |
| import freemarker.template.TemplateSequenceModel; |
| |
| /** |
| * A holder for builtins that operate exclusively on hash left-hand value. |
| */ |
| class BuiltInsForHashes { |
| |
| static class keysBI extends BuiltInForHashEx { |
| |
| @Override |
| TemplateModel calculateResult(TemplateHashModelEx hashExModel, Environment env) |
| throws TemplateModelException, InvalidReferenceException { |
| TemplateCollectionModel keys = hashExModel.keys(); |
| if (keys == null) throw newNullPropertyException("keys", hashExModel, env); |
| return keys instanceof TemplateSequenceModel ? keys : new CollectionAndSequence(keys); |
| } |
| |
| } |
| |
| static class valuesBI extends BuiltInForHashEx { |
| @Override |
| TemplateModel calculateResult(TemplateHashModelEx hashExModel, Environment env) |
| throws TemplateModelException, InvalidReferenceException { |
| TemplateCollectionModel values = hashExModel.values(); |
| if (values == null) throw newNullPropertyException("values", hashExModel, env); |
| return values instanceof TemplateSequenceModel ? values : new CollectionAndSequence(values); |
| } |
| } |
| |
| // Can't be instantiated |
| private BuiltInsForHashes() { } |
| |
| } |