/*
* 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.template.TemplateCollectionModel;
import freemarker.template.TemplateHashModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.TemplateSequenceModel;
/**
* A holder for builtins that operate exclusively on hash left-hand value.
*/
class BuiltInsForHashes {
static class keysBI extends BuiltInForHashEx {
TemplateModel calculateResult(TemplateHashModelEx hashExModel, Environment env)
throws TemplateModelException, InvalidReferenceException {
TemplateCollectionModel keys = hashExModel.keys();
if (keys == null) throw newNullPropertyException("keys", hashExModel, env);
return keys instanceof TemplateSequenceModel ? keys : new CollectionAndSequence(keys);
}
}
static class valuesBI extends BuiltInForHashEx {
TemplateModel calculateResult(TemplateHashModelEx hashExModel, Environment env)
throws TemplateModelException, InvalidReferenceException {
TemplateCollectionModel values = hashExModel.values();
if (values == null) throw newNullPropertyException("values", hashExModel, env);
return values instanceof TemplateSequenceModel ? values : new CollectionAndSequence(values);
}
}
// Can't be instantiated
private BuiltInsForHashes() { }
}