src.it.unimi.dsi.fastutil.longs.AbstractLongSet Maven / Gradle / Ivy
/* Generic definitions */
/* Assertions (useful to generate conditional code) */
/* Current type and class (and size, if applicable) */
/* Value methods */
/* Interfaces (keys) */
/* Interfaces (values) */
/* Abstract implementations (keys) */
/* Abstract implementations (values) */
/* Static containers (keys) */
/* Static containers (values) */
/* Implementations */
/* Synchronized wrappers */
/* Unmodifiable wrappers */
/* Other wrappers */
/* Methods (keys) */
/* Methods (values) */
/* Methods (keys/values) */
/* Methods that have special names depending on keys (but the special names depend on values) */
/* Equality */
/* Object/Reference-only definitions (keys) */
/* Primitive-type-only definitions (keys) */
/* Object/Reference-only definitions (values) */
/*
* Copyright (C) 2002-2013 Sebastiano Vigna
*
* 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 it.unimi.dsi.fastutil.longs;
import java.util.Set;
/** An abstract class providing basic methods for sets implementing a type-specific interface. */
public abstract class AbstractLongSet extends AbstractLongCollection implements Cloneable, LongSet {
protected AbstractLongSet() {}
public abstract LongIterator iterator();
public boolean equals( final Object o ) {
if ( o == this ) return true;
if ( !( o instanceof Set ) ) return false;
Set> s = (Set>) o;
if ( s.size() != size() ) return false;
return containsAll(s);
}
/** Returns a hash code for this set.
*
* The hash code of a set is computed by summing the hash codes of
* its elements.
*
* @return a hash code for this set.
*/
public int hashCode() {
int h = 0, n = size();
LongIterator i = iterator();
long k;
while( n-- != 0 ) {
k = i.nextLong(); // We need k because KEY2JAVAHASH() is a macro with repeated evaluation.
h += it.unimi.dsi.fastutil.HashCommon.long2int(k);
}
return h;
}
public boolean remove( long k ) {
throw new UnsupportedOperationException();
}
/** Delegates to remove()
.
*
* @param k the element to be removed.
* @return true if the set was modified.
*/
public boolean rem( long k ) {
return remove( k );
}
/** Delegates to the corresponding type-specific method. */
public boolean remove( final Object o ) {
return remove( ((((Long)(o)).longValue())) );
}
}
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