/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 freemarker.template;

import freemarker.core.ArithmeticEngine;

"number" template language data type; an object that stores a number. There's only one numerical type as far as the template language is concerned, but it can store its value using whatever Java number type. Making operations between numbers (and so the coercion rules) is up to the ArithmeticEngine. 
 Objects of this type should be immutable, that is, calling getAsNumber() should always return the same value as for the first time. /**
 * "number" template language data type; an object that stores a number. There's only one numerical type as far as the
 * template language is concerned, but it can store its value using whatever Java number type. Making operations between
 * numbers (and so the coercion rules) is up to the {@link ArithmeticEngine}.
 * 
 * <p>
 * Objects of this type should be immutable, that is, calling {@link #getAsNumber()} should always return the same value
 * as for the first time.
 */
public interface TemplateNumberModel extends TemplateModel {

    
Returns the numeric value. The return value must not be null. 
Returns:
the Number instance associated with this number model./**
     * Returns the numeric value. The return value must not be {@code null}.
     *
     * @return the {@link Number} instance associated with this number model.
     */
    public Number getAsNumber() throws TemplateModelException;
    
}