| /* |
| * 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.apache.freemarker.core; |
| |
| import org.apache.freemarker.core.model.ObjectWrapper; |
| import org.apache.freemarker.core.model.TemplateModel; |
| import org.apache.freemarker.core.model.TemplateModelIterator; |
| import org.apache.freemarker.core.model.TemplateSequenceModel; |
| import org.apache.freemarker.core.model.impl.DefaultArrayAdapter; |
| import org.apache.freemarker.core.model.impl.SimpleString; |
| |
| /** |
| * Adapts (not copies) a {@link String} array with on-the-fly wrapping of the items to {@link SimpleString}-s. The |
| * important difference to {@link DefaultArrayAdapter} is that it doesn't depend on an {@link ObjectWrapper}, which is |
| * needed to guarantee the behavior of some template language constructs. The important difference to |
| * {@link NativeSequence} is that it doesn't need upfront conversion to {@link TemplateModel}-s (performance). |
| */ |
| class NativeStringArraySequence implements TemplateSequenceModel { |
| |
| private final String[] items; |
| |
| public NativeStringArraySequence(String[] items) { |
| this.items = items; |
| } |
| |
| @Override |
| public TemplateModel get(int index) throws TemplateException { |
| return index < items.length && index >= 0 ? new SimpleString(items[index]) : null; |
| } |
| |
| @Override |
| public int getCollectionSize() throws TemplateException { |
| return items.length; |
| } |
| |
| @Override |
| public boolean isEmptyCollection() throws TemplateException { |
| return items.length == 0; |
| } |
| |
| @Override |
| public TemplateModelIterator iterator() throws TemplateException { |
| return new TemplateModelIterator() { |
| private int nextIndex; |
| |
| @Override |
| public TemplateModel next() throws TemplateException { |
| return new SimpleString(items[nextIndex++]); |
| } |
| |
| @Override |
| public boolean hasNext() throws TemplateException { |
| return nextIndex < items.length; |
| } |
| }; |
| } |
| |
| } |