Update #0 - First Release

sources/main/java/com/google/common/collect/AbstractRangeSet.java

@@ -0,0 +1,103 @@
+/*
+ * 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 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 abstract Range<C> rangeContaining(C value);
+
+	@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 abstract boolean encloses(Range<C> otherRange);
+
+	@Override
+	public boolean equals(@Nullable Object obj) {
+		if (obj == this) {
+			return true;
+		} else 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() {
+		return asRanges().toString();
+	}
+}