/*
* Copyright 2017 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.api.internal.changedetection.state;
import com.google.common.collect.ImmutableSet;
import org.gradle.caching.internal.BuildCacheHasher;
public class SetValueSnapshot implements ValueSnapshot {
private final ImmutableSet<ValueSnapshot> elements;
public SetValueSnapshot(ImmutableSet<ValueSnapshot> elements) {
this.elements = elements;
}
public ImmutableSet<ValueSnapshot> getElements() {
return elements;
}
@Override
public void appendToHasher(BuildCacheHasher hasher) {
hasher.putString("Set");
hasher.putInt(elements.size());
for (ValueSnapshot element : elements) {
element.appendToHasher(hasher);
}
}
@Override
public ValueSnapshot snapshot(Object value, ValueSnapshotter snapshotter) {
ValueSnapshot newSnapshot = snapshotter.snapshot(value);
if (newSnapshot instanceof SetValueSnapshot) {
SetValueSnapshot other = (SetValueSnapshot) newSnapshot;
if (elements.equals(other.elements)) {
return this;
}
}
return newSnapshot;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj == null || obj.getClass() != getClass()) {
return false;
}
SetValueSnapshot other = (SetValueSnapshot) obj;
return elements.equals(other.elements);
}
@Override
public int hashCode() {
return elements.hashCode();
}
}