1 2 /* ==================================================================== 3 * The Apache Software License, Version 1.1 4 * 5 * Copyright (c) 2002 The Apache Software Foundation. All rights 6 * reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. The end-user documentation included with the redistribution, 21 * if any, must include the following acknowledgment: 22 * "This product includes software developed by the 23 * Apache Software Foundation (http://www.apache.org/)." 24 * Alternately, this acknowledgment may appear in the software itself, 25 * if and wherever such third-party acknowledgments normally appear. 26 * 27 * 4. The names "Apache" and "Apache Software Foundation" and 28 * "Apache POI" must not be used to endorse or promote products 29 * derived from this software without prior written permission. For 30 * written permission, please contact apache@apache.org. 31 * 32 * 5. Products derived from this software may not be called "Apache", 33 * "Apache POI", nor may "Apache" appear in their name, without 34 * prior written permission of the Apache Software Foundation. 35 * 36 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 37 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 38 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 39 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 43 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 44 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 45 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 46 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 47 * SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This software consists of voluntary contributions made by many 51 * individuals on behalf of the Apache Software Foundation. For more 52 * information on the Apache Software Foundation, please see 53 * <http://www.apache.org/>. 54 */ 55 56 package org.apache.poi.hssf.record.formula; 57 58 import java.util.List; 59 60 import org.apache.poi.hssf.util.SheetReferences; 61 62 /** 63 * While formula tokens are stored in RPN order and thus do not need parenthesis for 64 * precedence reasons, Parenthesis tokens ARE written to ensure that user entered 65 * parenthesis are displayed as-is on reading back 66 * 67 * Avik Sengupta <lists@aviksengupta.com> 68 * Andrew C. Oliver (acoliver at apache dot org) 69 * @author Jason Height (jheight at chariot dot net dot au) 70 */ 71 public class ParenthesisPtg 72 extends OperationPtg 73 { 74 75 private final static int SIZE = 1; 76 public final static byte sid = 0x15; 77 78 public ParenthesisPtg() 79 { 80 } 81 82 public ParenthesisPtg(byte [] data, int offset) 83 { 84 85 // doesn't need anything 86 } 87 88 89 90 public void writeBytes(byte [] array, int offset) 91 { 92 array[ offset + 0 ] = sid; 93 } 94 95 public int getSize() 96 { 97 return SIZE; 98 } 99 100 public int getType() 101 { 102 return TYPE_BINARY; 103 } 104 105 public int getNumberOfOperands() 106 { 107 return 1; 108 } 109 110 public String toFormulaString(SheetReferences refs) 111 { 112 return "()"; 113 } 114 115 116 public String toFormulaString(String[] operands) { 117 return "("+operands[0]+")"; 118 } 119 120 public byte getDefaultOperandClass() {return Ptg.CLASS_VALUE;} 121 122 public Object clone() { 123 return new ParenthesisPtg(); 124 } 125 126 } 127 128