/*
 * Java Genetic Algorithm Library (@__identifier__@).
 * Copyright (c) @__year__@ Franz Wilhelmstötter
 *
 * 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.
 *
 * Author:
 *    Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
 */
package org.jenetics.prog.op;

import static java.util.Objects.requireNonNull;

import java.util.function.Function;

/**
 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
 * @version 3.9
 * @since 3.9
 */
class Operation<T> implements Op<T> {
	private final String _name;
	private final int _arity;
	private final Function<T[], T> _function;

	Operation(
		final String name,
		final int arity,
		final Function<T[], T> function
	) {
		requireNonNull(name);
		requireNonNull(function);
		if (arity < 0) {
			throw new IllegalArgumentException(
				"Arity smaller than zero: " + arity
			);
		}

		_name = name;
		_function = function;
		_arity = arity;
	}

	@Override
	public String name() {
		return _name;
	}

	@Override
	public int arity() {
		return _arity;
	}

	@Override
	public T apply(final T[] doubles) {
		return _function.apply(doubles);
	}

	@Override
	public String toString() {
		return _name;
	}

}

/*
 * Java Genetic Algorithm Library (@__identifier__@).
 * Copyright (c) @__year__@ Franz Wilhelmstötter
 *
 * 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.
 *
 * Author:
 *    Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
 */
package org.jenetics.prog.op;

import static java.util.Objects.requireNonNull;

import java.util.function.Function;

/**
 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
 * @version 3.9
 * @since 3.9
 */
final class Operation<T> implements Op<T> {
	private final String _name;
	private final int _arity;
	private final Function<T[], T> _function;

	Operation(
		final String name,
		final int arity,
		final Function<T[], T> function
	) {
		requireNonNull(name);
		requireNonNull(function);
		if (arity < 0) {
			throw new IllegalArgumentException(
				"Arity smaller than zero: " + arity
			);
		}

		_name = name;
		_function = function;
		_arity = arity;
	}

	@Override
	public String name() {
		return _name;
	}

	@Override
	public int arity() {
		return _arity;
	}

	@Override
	public T apply(final T[] doubles) {
		return _function.apply(doubles);
	}

	@Override
	public String toString() {
		return _name;
	}

}

Make 'Operation' class final.