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/*******************************************************************************
* ============LICENSE_START====================================================
* * org.onap.aaf
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * ===========================================================================
* * 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.
* * ============LICENSE_END====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.aaf.rosetta.marshal;
import java.util.Iterator;
import org.onap.aaf.rosetta.Ladder;
import org.onap.aaf.rosetta.Marshal;
import org.onap.aaf.rosetta.ParseException;
import org.onap.aaf.rosetta.Parsed;
public class DocMarshal<T> extends Marshal<T> {
private Marshal<T> root;
public DocMarshal(Marshal<T> root) {
this.root = root;
}
@Override
public Parsed<State> parse(T t, Parsed<State> parsed) throws ParseException {
Ladder<Iterator<?>> ladder = parsed.state.ladder;
Iterator<?> iter = ladder.peek();
if(iter==null) {
ladder.push(PENDING_ITERATOR);
parsed.event = START_DOC;
} else if (DONE_ITERATOR.equals(iter)) {
} else {
ladder.ascend(); // look at field info
Iterator<?> currFieldIter = ladder.peek();
if(!DONE_ITERATOR.equals(currFieldIter)){
parsed = root.parse(t, parsed);
}
ladder.descend();
if(DONE_ITERATOR.equals(currFieldIter) || parsed.event==NONE) {
parsed.event = END_DOC;
ladder.push(DONE_ITERATOR);
}
}
return parsed; // if unchanged, then it will end process
}
public static final Iterator<Void> PENDING_ITERATOR = new Iterator<Void>() {
@Override
public boolean hasNext() {
return false;
}
@Override
public Void next() {
return null;
}
@Override
public void remove() {
}
};
public static<T> DocMarshal<T> root(Marshal<T> m) {
return (DocMarshal<T>)new DocMarshal<T>(m);
}
}
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