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package com.github.javaparser.printer;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.NodeList;
import com.github.javaparser.metamodel.NodeMetaModel;
import com.github.javaparser.metamodel.PropertyMetaModel;
import java.util.List;
import static com.github.javaparser.utils.Utils.assertNotNull;
import static java.util.stream.Collectors.toList;
/**
* Outputs an XML file containing the AST meant for inspecting it.
*/
public class XmlPrinter {
private final boolean outputNodeType;
public XmlPrinter(boolean outputNodeType) {
this.outputNodeType = outputNodeType;
}
public String output(Node node) {
StringBuilder output = new StringBuilder();
output(node, "root", 0, output);
return output.toString();
}
public void output(Node node, String name, int level, StringBuilder builder) {
assertNotNull(node);
NodeMetaModel metaModel = node.getMetaModel();
List<PropertyMetaModel> allPropertyMetaModels = metaModel.getAllPropertyMetaModels();
List<PropertyMetaModel> attributes = allPropertyMetaModels.stream().filter(PropertyMetaModel::isAttribute).filter(PropertyMetaModel::isSingular).collect(toList());
List<PropertyMetaModel> subNodes = allPropertyMetaModels.stream().filter(PropertyMetaModel::isNode).filter(PropertyMetaModel::isSingular).collect(toList());
List<PropertyMetaModel> subLists = allPropertyMetaModels.stream().filter(PropertyMetaModel::isNodeList).collect(toList());
builder.append("<").append(name);
if (outputNodeType) {
builder.append(attribute("type", metaModel.getTypeName()));
}
for (PropertyMetaModel attributeMetaModel : attributes) {
builder.append(attribute(attributeMetaModel.getName(), attributeMetaModel.getValue(node).toString()));
}
builder.append(">");
for (PropertyMetaModel subNodeMetaModel : subNodes) {
Node value = (Node) subNodeMetaModel.getValue(node);
if (value != null) {
output(value, subNodeMetaModel.getName(), level + 1, builder);
}
}
for (PropertyMetaModel subListMetaModel : subLists) {
NodeList<? extends Node> subList = (NodeList<? extends Node>) subListMetaModel.getValue(node);
if (subList != null && !subList.isEmpty()) {
String listName = subListMetaModel.getName();
builder.append("<").append(listName).append(">");
String singular = listName.substring(0, listName.length() - 1);
for (Node subListNode : subList) {
output(subListNode, singular, level + 1, builder);
}
builder.append(close(listName));
}
}
builder.append(close(name));
}
private static String close(String name) {
return "</" + name + ">";
}
private static String attribute(String name, String value) {
return " " + name + "='" + value + "'";
}
}
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