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Operator.java
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Operator.java
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/*
* Copyright (C) 2024 Andre601
*
* Original Copyright and License (C) 2020 Florian Stober
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package ch.andre601.expressionparser.operator;
import ch.andre601.expressionparser.internal.CheckUtil;
import ch.andre601.expressionparser.templates.ExpressionTemplate;
import java.util.function.BiFunction;
public abstract class Operator{
private final int priority;
public Operator(int priority){
this.priority = priority;
}
/**
* Static method to create a new Operator with its {@link #createTemplate(ExpressionTemplate, ExpressionTemplate) createTemplate}
* method utilizing the provided BiFunction.
*
* @param priority
* The priority this Operator should have.
* @param function
* The BiFunction that should be used when {@link #createTemplate(ExpressionTemplate, ExpressionTemplate) createTemplate}
* is called for the Operator.
*
* @return A new Operator.
*/
public static Operator of(int priority, BiFunction<ExpressionTemplate, ExpressionTemplate, ExpressionTemplate> function){
CheckUtil.notNull(function, ListOperator.class, "Function");
return new Operator(priority){
@Override
public ExpressionTemplate createTemplate(ExpressionTemplate a, ExpressionTemplate b){
return function.apply(a, b);
}
};
}
/**
* Returns the priority set for this Operator.
*
* @return Priority of this Operator.
*/
public int getPriority(){
return priority;
}
/**
* Method to create an {@link ExpressionTemplate} from two ExpressionTemplates.
*
* @param a
* First ExpressionTemplate to use.
* @param b
* Second ExpressionTemplate to use.
*
* @return ExpressionTemplate instance made from the provided ExpressionTemplates.
*/
public abstract ExpressionTemplate createTemplate(ExpressionTemplate a, ExpressionTemplate b);
}