void accept(Environment env) throws IOException, TemplateException {
TemplateModel node = targetNode == null ? null : targetNode.getAsTemplateModel(env);
TemplateModel nss = namespaces == null ? null : namespaces.getAsTemplateModel(env);
if (namespaces instanceof StringLiteral) {
nss = env.importLib(((TemplateScalarModel) nss).getAsString(), null);
} else if (namespaces instanceof ListLiteral) {
nss = ((ListLiteral) namespaces).evaluateStringsToNamespaces(env);
}
if (node != null && !(node instanceof TemplateNodeModel)) {
throw new TemplateException(
"Expecting an XML node here, for expression: "
+ targetNode
+ ", found a: "
+ node.getClass().getName(),
env);
}
if (nss != null) {
if (nss instanceof TemplateHashModel) {
SimpleSequence ss = new SimpleSequence(1);
ss.add(nss);
nss = ss;
} else if (!(nss instanceof TemplateSequenceModel)) {
throw new TemplateException("Expecting a sequence of namespaces after 'using'", env);
}
}
env.recurse((TemplateNodeModel) node, (TemplateSequenceModel) nss);
}
public TemplateSequenceModel getChildNodes() {
if (regulatedChildBuffer != null) {
final SimpleSequence seq = new SimpleSequence(regulatedChildCount);
for (int i = 0; i < regulatedChildCount; i++) {
seq.add(regulatedChildBuffer[i]);
}
return seq;
}
SimpleSequence result = new SimpleSequence(1);
if (nestedBlock != null) {
result.add(nestedBlock);
}
return result;
}
public static String getMessage(String messageName, SimpleSequence params) {
try {
return getMessage(messageName, params.toList().toArray());
} catch (Exception e) {
throw new ForumException(e);
}
}
/** Converts a FreeMarker {@link SimpleSequence} to a {@link Set}. */
public static Set<String> simpleSequenceToSet(SimpleSequence simpleSequence) {
Set<String> result = new HashSet<>();
for (int i = 0; i < simpleSequence.size(); i++) {
try {
Object sequenceEntry = simpleSequence.get(i);
if (sequenceEntry instanceof SimpleScalar) {
result.add(((SimpleScalar) sequenceEntry).getAsString());
} else {
result.add(simpleSequence.get(i).toString());
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
return result;
}