freemarker.core.TemplateElementArrayBuilder Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of freemarker Show documentation
Show all versions of freemarker Show documentation
FreeMarker is a "template engine"; a generic tool to generate text output based on templates.
/*
* 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.utility.CollectionUtils;
/**
* Holds an buffer (array) of {@link TemplateElement}-s with the count of the utilized items in it. The un-utilized tail
* of the array must only contain {@code null}-s.
*
* @since 2.3.24
*/
class TemplateElements {
static final TemplateElements EMPTY = new TemplateElements(null, 0);
private final TemplateElement[] buffer;
private final int count;
/**
* @param buffer
* The buffer; {@code null} exactly if {@code count} is 0.
* @param count
* The number of utilized buffer elements; if 0, then {@code null} must be {@code null}.
*/
TemplateElements(TemplateElement[] buffer, int count) {
/*
// Assertion:
if (count == 0 && buffer != null) {
throw new IllegalArgumentException();
}
*/
this.buffer = buffer;
this.count = count;
}
TemplateElement[] getBuffer() {
return buffer;
}
int getCount() {
return count;
}
TemplateElement getFirst() {
return buffer != null ? buffer[0] : null;
}
TemplateElement getLast() {
return buffer != null ? buffer[count - 1] : null;
}
/**
* Used for some backward compatibility hacks.
*/
TemplateElement asSingleElement() {
if (count == 0) {
return new TextBlock(CollectionUtils.EMPTY_CHAR_ARRAY, false);
} else {
TemplateElement first = buffer[0];
if (count == 1) {
return first;
} else {
MixedContent mixedContent = new MixedContent();
mixedContent.setChildren(this);
mixedContent.setLocation(first.getTemplate(), first, getLast());
return mixedContent;
}
}
}
/**
* Used for some backward compatibility hacks.
*/
MixedContent asMixedContent() {
MixedContent mixedContent = new MixedContent();
if (count != 0) {
TemplateElement first = buffer[0];
mixedContent.setChildren(this);
mixedContent.setLocation(first.getTemplate(), first, getLast());
}
return mixedContent;
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy