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/*
* Copyright (C) 2002-2014 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 PACKAGE;
import java.util.Set;
/** An abstract class providing basic methods for sets implementing a type-specific interface. */
public abstract class ABSTRACT_SET KEY_GENERIC extends ABSTRACT_COLLECTION KEY_GENERIC implements Cloneable, SET KEY_GENERIC {
protected ABSTRACT_SET() {}
public abstract KEY_ITERATOR KEY_GENERIC 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();
KEY_ITERATOR KEY_GENERIC i = iterator();
KEY_GENERIC_TYPE k;
while( n-- != 0 ) {
k = i.NEXT_KEY(); // We need k because KEY2JAVAHASH() is a macro with repeated evaluation.
h += KEY2JAVAHASH( k );
}
return h;
}
public boolean remove( KEY_TYPE k ) {
throw new UnsupportedOperationException();
}
#if #keys(primitive)
/** Delegates to <code>remove()</code>.
*
* @param k the element to be removed.
* @return true if the set was modified.
*/
public boolean rem( KEY_TYPE k ) {
return remove( k );
}
/** Delegates to the corresponding type-specific method. */
public boolean remove( final Object o ) {
return remove( KEY_OBJ2TYPE( o ) );
}
#endif
}
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