/*
* Copyright 2011 the original author or authors.
*
* 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 org.gradle.internal.typeconversion;
import org.gradle.internal.exceptions.DiagnosticsVisitor;
import org.gradle.util.GUtil;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* Flattens or collectionizes input and passes the input notations to the delegates. Returns a set.
*/
public class FlatteningNotationParser<T> implements NotationParser<Object, Set<T>> {
private final NotationParser<Object, T> delegate;
public FlatteningNotationParser(NotationParser<Object, T> delegate) {
assert delegate != null : "delegate cannot be null";
this.delegate = delegate;
}
@Override
public void describe(DiagnosticsVisitor visitor) {
delegate.describe(visitor);
visitor.candidate("Collections or arrays of any other supported format. Nested collections/arrays will be flattened.");
}
public Set<T> parseNotation(Object notation) {
Set<T> out = new LinkedHashSet<T>();
Collection notations = GUtil.collectionize(notation);
for (Object n : notations) {
out.add(delegate.parseNotation(n));
}
return out;
}
}