/*
* 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 freemarker.core.Environment.NestedElementTemplateDirectiveBody;
import freemarker.core.ThreadInterruptionSupportTemplatePostProcessor.ThreadInterruptionCheck;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateException;
import freemarker.template.utility.StringUtil;
/**
* [2.4] Should become public somehow; this is more intelligent than a {@code null} check, for example, when the body
* only contains a thread interruption check, it treats it as valid. Indicates that the directive shouldn't have
* nested content, but it had. This will probably become public when the directive/method stuff was reworked.
*/
class NestedContentNotSupportedException extends TemplateException {
public static void check(TemplateDirectiveBody body) throws NestedContentNotSupportedException {
if (body == null) {
return;
}
if (body instanceof NestedElementTemplateDirectiveBody) {
TemplateElement te = ((NestedElementTemplateDirectiveBody) body).getElement();
if (te == null || te instanceof ThreadInterruptionCheck) {
return;
}
}
throw new NestedContentNotSupportedException(Environment.getCurrentEnvironment());
}
private NestedContentNotSupportedException(Environment env) {
this(null, null, env);
}
private NestedContentNotSupportedException(Exception cause, Environment env) {
this(null, cause, env);
}
private NestedContentNotSupportedException(String description, Environment env) {
this(description, null, env);
}
private NestedContentNotSupportedException(String description, Exception cause, Environment env) {
super( "Nested content (body) not supported."
+ (description != null ? " " + StringUtil.jQuote(description) : ""),
cause, env);
}
}