/*
* 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.io.IOException;
import freemarker.template.TemplateException;
/**
* #attempt element; might has a nested {@link RecoveryBlock}.
*/
final class AttemptBlock extends TemplateElement {
private TemplateElement attemptBlock;
private RecoveryBlock recoveryBlock;
AttemptBlock(TemplateElement attemptBlock, RecoveryBlock recoveryBlock) {
this.attemptBlock = attemptBlock;
this.recoveryBlock = recoveryBlock;
setRegulatedChildBufferCapacity(2);
addRegulatedChild(attemptBlock);
addRegulatedChild(recoveryBlock);
}
@Override
void accept(Environment env) throws TemplateException, IOException {
env.visitAttemptRecover(attemptBlock, recoveryBlock);
}
@Override
protected String dump(boolean canonical) {
if (!canonical) {
return getNodeTypeSymbol();
} else {
StringBuilder buf = new StringBuilder();
buf.append("<").append(getNodeTypeSymbol()).append(">");
if (attemptBlock != null) {
buf.append(attemptBlock.getCanonicalForm());
}
if (recoveryBlock != null) {
buf.append(recoveryBlock.getCanonicalForm());
}
buf.append("</").append(getNodeTypeSymbol()).append(">");
return buf.toString();
}
}
@Override
int getParameterCount() {
return 1;
}
@Override
Object getParameterValue(int idx) {
if (idx != 0) throw new IndexOutOfBoundsException();
return recoveryBlock;
}
@Override
ParameterRole getParameterRole(int idx) {
if (idx != 0) throw new IndexOutOfBoundsException();
return ParameterRole.ERROR_HANDLER;
}
@Override
String getNodeTypeSymbol() {
return "#attempt";
}
@Override
boolean isShownInStackTrace() {
return false;
}
@Override
boolean isNestedBlockRepeater() {
return false;
}
}