package freemarker.core;
import java.io.IOException;
import freemarker.core.IteratorBlock.IterationContext;
import freemarker.template.TemplateException;
class Items extends TemplateElement {
private final String loopVarName;
private final String loopVar2Name;
Items(String loopVarName, String loopVar2Name, TemplateElements children) {
this.loopVarName = loopVarName;
this.loopVar2Name = loopVar2Name;
setChildren(children);
}
@Override
TemplateElement[] accept(Environment env) throws TemplateException, IOException {
final IterationContext iterCtx = IteratorBlock.findEnclosingIterationContext(env, null);
if (iterCtx == null) {
throw new _MiscTemplateException(env,
getNodeTypeSymbol(), " without iteration in context");
}
iterCtx.loopForItemsElement(env, getChildBuffer(), loopVarName, loopVar2Name);
return null;
}
@Override
boolean isNestedBlockRepeater() {
return true;
}
@Override
protected String dump(boolean canonical) {
StringBuilder sb = new StringBuilder();
if (canonical) sb.append('<');
sb.append(getNodeTypeSymbol());
sb.append(" as ");
sb.append(_CoreStringUtils.toFTLTopLevelIdentifierReference(loopVarName));
if (loopVar2Name != null) {
sb.append(", ");
sb.append(_CoreStringUtils.toFTLTopLevelIdentifierReference(loopVar2Name));
}
if (canonical) {
sb.append('>');
sb.append(getChildrenCanonicalForm());
sb.append("</");
sb.append(getNodeTypeSymbol());
sb.append('>');
}
return sb.toString();
}
@Override
String getNodeTypeSymbol() {
return "#items";
}
@Override
int getParameterCount() {
return loopVar2Name != null ? 2 : 1;
}
@Override
Object getParameterValue(int idx) {
switch (idx) {
case 0:
if (loopVarName == null) throw new IndexOutOfBoundsException();
return loopVarName;
case 1:
if (loopVar2Name == null) throw new IndexOutOfBoundsException();
return loopVar2Name;
default: throw new IndexOutOfBoundsException();
}
}
@Override
ParameterRole getParameterRole(int idx) {
switch (idx) {
case 0:
if (loopVarName == null) throw new IndexOutOfBoundsException();
return ParameterRole.TARGET_LOOP_VARIABLE;
case 1:
if (loopVar2Name == null) throw new IndexOutOfBoundsException();
return ParameterRole.TARGET_LOOP_VARIABLE;
default: throw new IndexOutOfBoundsException();
}
}
}