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/*
* Copyright (C) 2011 The Guava 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 com.google.common.collect;
import static com.google.common.base.Preconditions.checkNotNull;
import javax.annotation.Nullable;
/**
* A skeletal implementation of {@code RangeSet}.
*
* @author Louis Wasserman
*/
abstract class AbstractRangeSet<C extends Comparable> implements RangeSet<C> {
AbstractRangeSet() {}
@Override
public boolean contains(C value) {
return rangeContaining(value) != null;
}
@Override
public Range<C> rangeContaining(C value) {
checkNotNull(value);
for (Range<C> range : asRanges()) {
if (range.contains(value)) {
return range;
}
}
return null;
}
@Override
public boolean isEmpty() {
return asRanges().isEmpty();
}
@Override
public void add(Range<C> range) {
throw new UnsupportedOperationException();
}
@Override
public void remove(Range<C> range) {
throw new UnsupportedOperationException();
}
@Override
public void clear() {
remove(Range.<C>all());
}
@Override
public boolean enclosesAll(RangeSet<C> other) {
for (Range<C> range : other.asRanges()) {
if (!encloses(range)) {
return false;
}
}
return true;
}
@Override
public void addAll(RangeSet<C> other) {
for (Range<C> range : other.asRanges()) {
add(range);
}
}
@Override
public void removeAll(RangeSet<C> other) {
for (Range<C> range : other.asRanges()) {
remove(range);
}
}
@Override
public boolean encloses(Range<C> otherRange) {
for (Range<C> range : asRanges()) {
if (range.encloses(otherRange)) {
return true;
}
}
return false;
}
@Override
public boolean equals(@Nullable Object obj) {
if (obj instanceof RangeSet) {
RangeSet<?> other = (RangeSet<?>) obj;
return this.asRanges().equals(other.asRanges());
}
return false;
}
@Override
public final int hashCode() {
return asRanges().hashCode();
}
@Override
public final String toString() {
StringBuilder builder = new StringBuilder();
builder.append('{');
for (Range<C> range : asRanges()) {
builder.append(range);
}
builder.append('}');
return builder.toString();
}
}
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