| /******************************************************************************* |
| * 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 org.apache.sling.scripting.sightly.compiler.expression.nodes; |
| |
| import org.apache.sling.scripting.sightly.compiler.expression.Expression; |
| import org.apache.sling.scripting.sightly.compiler.expression.ExpressionNode; |
| import org.apache.sling.scripting.sightly.compiler.expression.NodeVisitor; |
| |
| /** |
| * A {code BinaryOperation} defines an expression where a binary operator is applied (e.g. "a AND b"). |
| */ |
| public final class BinaryOperation implements ExpressionNode { |
| |
| private BinaryOperator operator; |
| private ExpressionNode leftOperand; |
| private ExpressionNode rightOperand; |
| private Expression parentExpression; |
| |
| /** |
| * Creates a {@code BinaryOperation}. |
| * |
| * @param operator the operator |
| * @param leftOperand the left operand |
| * @param rightOperand the right operand |
| */ |
| public BinaryOperation(BinaryOperator operator, ExpressionNode leftOperand, ExpressionNode rightOperand) { |
| this.operator = operator; |
| this.leftOperand = leftOperand; |
| this.rightOperand = rightOperand; |
| } |
| |
| /** |
| * Creates a {@code BinaryOperation}. |
| * |
| * @param operator the operator |
| * @param leftOperand the left operand |
| * @param rightOperand the right operand |
| * @param parentExpression the parent expression of this operation |
| */ |
| public BinaryOperation(BinaryOperator operator, ExpressionNode leftOperand, ExpressionNode rightOperand, Expression parentExpression) { |
| this(operator, leftOperand, rightOperand); |
| this.parentExpression = parentExpression; |
| } |
| |
| /** |
| * Returns the operator of the operation. |
| * |
| * @return the operator |
| */ |
| public BinaryOperator getOperator() { |
| return operator; |
| } |
| |
| /** |
| * Returns the left operand. |
| * |
| * @return the left operand |
| */ |
| public ExpressionNode getLeftOperand() { |
| return leftOperand; |
| } |
| |
| /** |
| * Returns the right operand. |
| * |
| * @return the right operand. |
| */ |
| public ExpressionNode getRightOperand() { |
| return rightOperand; |
| } |
| |
| /** |
| * Returns the parent expression, if any. |
| * |
| * @return the parent expression or {@code null} |
| */ |
| public Expression getParentExpression() { |
| return parentExpression; |
| } |
| |
| /** |
| * Returns a copy of this {@code BinaryOperation} that contains information about the node's parent expression. |
| * |
| * @param parentExpression the parent expression |
| * @return a copy of the original {@code BinaryOperation} |
| */ |
| public BinaryOperation withParentExpression(Expression parentExpression) { |
| return new BinaryOperation(operator, leftOperand, rightOperand, parentExpression); |
| } |
| |
| @Override |
| public <T> T accept(NodeVisitor<T> visitor) { |
| return visitor.evaluate(this); |
| } |
| |
| @Override |
| public String toString() { |
| return "BinaryOperation{" + |
| "operator=" + operator + |
| ", leftOperand=" + leftOperand + |
| ", rightOperand=" + rightOperand + |
| '}'; |
| } |
| |
| } |