/*
* 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.SimpleScalar;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateScalarModel;
import freemarker.template.TemplateSequenceModel;
/**
* Sequence variable implementation that wraps a String[] with relatively low
* resource utilization. Warning: it does not copy the wrapped array, so do
* not modify that after the model was made!
*/
public class StringArraySequence implements TemplateSequenceModel {
private String[] stringArray;
private TemplateScalarModel[] array;
/**
* Warning: Does not copy the argument array!
*/
public StringArraySequence(String[] stringArray) {
this.stringArray = stringArray;
}
public TemplateModel get(int index) {
if (array == null) {
array = new TemplateScalarModel[stringArray.length];
}
TemplateScalarModel result = array[index];
if (result == null) {
result = new SimpleScalar(stringArray[index]);
array[index] = result;
}
return result;
}
public int size() {
return stringArray.length;
}
}