/*
* 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 java.util.List;
import freemarker.template.SimpleScalar;
import freemarker.template.SimpleSequence;
import freemarker.template.TemplateMethodModel;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.TemplateNodeModel;
import freemarker.template.utility.StringUtil;
/**
* A holder for builtins that operate exclusively on (XML-)node left-hand value.
*/
class BuiltInsForNodes {
static class ancestorsBI extends BuiltInForNode {
TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env) throws TemplateModelException {
AncestorSequence result = new AncestorSequence(env);
TemplateNodeModel parent = nodeModel.getParentNode();
while (parent != null) {
result.add(parent);
parent = parent.getParentNode();
}
return result;
}
}
static class childrenBI extends BuiltInForNode {
TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env) throws TemplateModelException {
return nodeModel.getChildNodes();
}
}
static class node_nameBI extends BuiltInForNode {
TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env) throws TemplateModelException {
return new SimpleScalar(nodeModel.getNodeName());
}
}
static class node_namespaceBI extends BuiltInForNode {
TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env) throws TemplateModelException {
String nsURI = nodeModel.getNodeNamespace();
return nsURI == null ? null : new SimpleScalar(nsURI);
}
}
static class node_typeBI extends BuiltInForNode {
TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env) throws TemplateModelException {
return new SimpleScalar(nodeModel.getNodeType());
}
}
static class parentBI extends BuiltInForNode {
TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env) throws TemplateModelException {
return nodeModel.getParentNode();
}
}
static class rootBI extends BuiltInForNode {
TemplateModel calculateResult(TemplateNodeModel nodeModel, Environment env) throws TemplateModelException {
TemplateNodeModel result = nodeModel;
TemplateNodeModel parent = nodeModel.getParentNode();
while (parent != null) {
result = parent;
parent = result.getParentNode();
}
return result;
}
}
// Can't be instantiated
private BuiltInsForNodes() { }
static class AncestorSequence extends SimpleSequence implements TemplateMethodModel {
private Environment env;
AncestorSequence(Environment env) {
this.env = env;
}
public Object exec(List names) throws TemplateModelException {
if (names == null || names.isEmpty()) {
return this;
}
AncestorSequence result = new AncestorSequence(env);
for (int i=0; i<size(); i++) {
TemplateNodeModel tnm = (TemplateNodeModel) get(i);
String nodeName = tnm.getNodeName();
String nsURI = tnm.getNodeNamespace();
if (nsURI == null) {
if (names.contains(nodeName)) {
result.add(tnm);
}
} else {
for (int j = 0; j<names.size(); j++) {
if (StringUtil.matchesName((String) names.get(j), nodeName, nsURI, env)) {
result.add(tnm);
break;
}
}
}
}
return result;
}
}
}