| /********************************************************************* |
| * Copyright (c) 2008 The University of York. |
| * |
| * This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 |
| * which is available at https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| **********************************************************************/ |
| package org.eclipse.epsilon.eol.dom; |
| |
| import java.util.Collection; |
| |
| import org.eclipse.epsilon.eol.exceptions.EolRuntimeException; |
| import org.eclipse.epsilon.eol.execute.context.IEolContext; |
| import org.eclipse.epsilon.eol.execute.operations.contributors.IterableOperationContributor; |
| import org.eclipse.epsilon.eol.types.NumberUtil; |
| |
| public class MinusOperatorExpression extends EagerOperatorExpression { |
| |
| public MinusOperatorExpression() {} |
| |
| public MinusOperatorExpression(Expression firstOperand, Expression secondOperand) { |
| super(firstOperand, secondOperand); |
| } |
| |
| @Override |
| public Object execute(Object o1, Object o2, IEolContext context) throws EolRuntimeException { |
| if (o1 instanceof Number && o2 instanceof Number){ |
| return NumberUtil.subtract((Number) o1, (Number) o2); |
| } |
| else if (o1 instanceof Collection && o2 instanceof Collection) { |
| try (IterableOperationContributor ioc = new IterableOperationContributor((Collection<?>) o1)) { |
| return ioc.excludingAll((Collection<?>) o2); |
| } |
| } |
| return null; |
| } |
| |
| public void accept(IEolVisitor visitor) { |
| visitor.visit(this); |
| } |
| } |