/*
* 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.IteratorBlock.IterationContext;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;
abstract class BuiltInForLoopVariable extends SpecialBuiltIn {
private String loopVarName;
void bindToLoopVariable(String loopVarName) {
this.loopVarName = loopVarName;
}
@Override
TemplateModel _eval(Environment env) throws TemplateException {
IterationContext iterCtx = IteratorBlock.findEnclosingIterationContext(env, loopVarName);
if (iterCtx == null) {
// The parser should prevent this situation
throw new _MiscTemplateException(
this, env,
"There's no iteration in context that uses loop variable ", new _DelayedJQuote(loopVarName), ".");
}
return calculateResult(iterCtx, env);
}
abstract TemplateModel calculateResult(IterationContext iterCtx, Environment env) throws TemplateException;
}