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A set of utilities and tools to speed up and ease programming in Java.

There is a newer version: 0.5

/*
 * (c) 2005 David B. Bracewell
 *
 * 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 com.davidbracewell.parsing.handlers;


import com.davidbracewell.parsing.ParseException;
import com.davidbracewell.parsing.Parser;
import com.davidbracewell.parsing.ParserToken;
import com.davidbracewell.parsing.expressions.BinaryOperatorExpression;
import com.davidbracewell.parsing.expressions.Expression;

/**
 * A InfixHandler for binary operators
 *
 * @author David B. Bracewell
 */
public class BinaryOperatorHandler extends InfixHandler {

  private final boolean rightAssociative;

  /**
   * Default constructor
   *
   * @param precedence       The precedence of the handler
   * @param rightAssociative true if the handler is right associative
   */
  public BinaryOperatorHandler(int precedence, boolean rightAssociative) {
    super(precedence);
    this.rightAssociative = rightAssociative;
  }

  @Override
  public Expression parse(Parser parser, Expression left, ParserToken token) throws ParseException {
    Expression right = parser.next(precedence() - (rightAssociative ? 1 : 0));
    return new BinaryOperatorExpression(left, token, right);
  }


}//END OF BinaryOperatorHandler