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/* We do not support C11 . */
/* 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) 2002-2016 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.doubles;
/**
* An abstract class providing basic methods for functions implementing a
* type-specific interface.
*
*
* Optional operations just throw an {@link UnsupportedOperationException}.
* Generic versions of accessors delegate to the corresponding type-specific
* counterparts following the interface rules (they take care of returning
* null on a missing key).
*
*
* This class handles directly a default return value (including
* {@linkplain #defaultReturnValue() methods to access it}). Instances of
* classes inheriting from this class have just to return
* defRetValue to denote lack of a key in type-specific methods.
* The value is serialized.
*
*
* Implementing subclasses have just to provide type-specific
* get(), type-specific containsKey(), and
* size() methods.
*
*/
public abstract class AbstractDouble2ObjectFunction implements Double2ObjectFunction, java.io.Serializable {
private static final long serialVersionUID = -4940583368468432370L;
protected AbstractDouble2ObjectFunction() {
}
/**
* The default return value for get(), put() and
* remove().
*/
protected V defRetValue;
public void defaultReturnValue(final V rv) {
defRetValue = rv;
}
public V defaultReturnValue() {
return defRetValue;
}
public V put(double key, V value) {
throw new UnsupportedOperationException();
}
public V remove(double key) {
throw new UnsupportedOperationException();
}
public void clear() {
throw new UnsupportedOperationException();
}
public boolean containsKey(final Object ok) {
if (ok == null) return false;
return containsKey(((((Double) (ok)).doubleValue())));
}
/**
* Delegates to the corresponding type-specific method, taking care of
* returning null on a missing key.
*
*
* This method must check whether the provided key is in the map using
* containsKey(). Thus, it probes the map twice.
* Implementors of subclasses should override it with a more efficient
* method.
*/
public V get(final Object ok) {
if (ok == null) return null;
final double k = ((((Double) (ok)).doubleValue()));
return containsKey(k) ? (get(k)) : null;
}
/**
* Delegates to the corresponding type-specific method, taking care of
* returning null on a missing key.
*
*
* This method must check whether the provided key is in the map using
* containsKey(). Thus, it probes the map twice.
* Implementors of subclasses should override it with a more efficient
* method.
*
* @deprecated Please use the corresponding type-specific method instead.
*/
@Deprecated
public V put(final Double ok, final V ov) {
final double k = ((ok).doubleValue());
final boolean containsKey = containsKey(k);
final V v = put(k, (ov));
return containsKey ? (v) : null;
}
/**
* Delegates to the corresponding type-specific method, taking care of
* returning null on a missing key.
*
*
* This method must check whether the provided key is in the map using
* containsKey(). Thus, it probes the map twice.
* Implementors of subclasses should override it with a more efficient
* method.
*/
public V remove(final Object ok) {
if (ok == null) return null;
final double k = ((((Double) (ok)).doubleValue()));
final boolean containsKey = containsKey(k);
final V v = remove(k);
return containsKey ? (v) : null;
}
}