/*
* =============================================================================
*
* Copyright (c) 2011-2016, The THYMELEAF team (http://www.thymeleaf.org)
*
* 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 org.thymeleaf.engine;
import java.io.IOException;
import java.io.Writer;
import org.thymeleaf.model.IModelVisitor;
import org.thymeleaf.model.IProcessingInstruction;
/*
* Engine implementation of IProcessingInstruction.
*
* @author Daniel Fernandez
* @since 3.0.0
*/
final class ProcessingInstruction extends AbstractTemplateEvent implements IProcessingInstruction, IEngineTemplateEvent {
private final String target;
private final String content;
private final String processingInstruction;
ProcessingInstruction(
final String target,
final String content) {
super();
this.target = target;
this.content = content;
this.processingInstruction = computeProcessingInstruction();
}
ProcessingInstruction(
final String processingInstruction,
final String target,
final String content,
final String templateName, final int line, final int col) {
super(templateName, line, col);
this.target = target;
this.content = content;
this.processingInstruction = (processingInstruction != null? processingInstruction : computeProcessingInstruction());
}
public String getTarget() {
return this.target;
}
public String getContent() {
return this.content;
}
public String getProcessingInstruction() {
return this.processingInstruction;
}
private String computeProcessingInstruction() {
final StringBuilder strBuilder = new StringBuilder(100);
strBuilder.append("<?");
strBuilder.append(this.target);
if (this.content != null) {
strBuilder.append(' ');
strBuilder.append(this.content);
}
strBuilder.append("?>");
return strBuilder.toString();
}
public void accept(final IModelVisitor visitor) {
visitor.visit(this);
}
public void write(final Writer writer) throws IOException {
writer.write(this.processingInstruction);
}
static ProcessingInstruction asEngineProcessingInstruction(final IProcessingInstruction processingInstruction) {
if (processingInstruction instanceof ProcessingInstruction) {
return (ProcessingInstruction) processingInstruction;
}
return new ProcessingInstruction(
null,
processingInstruction.getTarget(), processingInstruction.getContent(),
processingInstruction.getTemplateName(), processingInstruction.getLine(), processingInstruction.getCol());
}
@Override
public void beHandled(final ITemplateHandler handler) {
handler.handleProcessingInstruction(this);
}
@Override
public String toString() {
return getProcessingInstruction();
}
}