1    
2    /* ====================================================================
3     * The Apache Software License, Version 1.1
4     *
5     * Copyright (c) 2002 The Apache Software Foundation.  All rights
6     * reserved.
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9     * modification, are permitted provided that the following conditions
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13    *    notice, this list of conditions and the following disclaimer.
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15    * 2. Redistributions in binary form must reproduce the above copyright
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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.
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27    * 4. The names "Apache" and "Apache Software Foundation" and
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29    *    derived from this software without prior written permission. For
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32    * 5. Products derived from this software may not be called "Apache",
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54    */
55   
56   package org.apache.poi.hssf.record.formula;
57   
58   import java.util.List;
59   
60   /**
61    * While formula tokens are stored in RPN order and thus do not need parenthesis for 
62    * precedence reasons, Parenthesis tokens ARE written to ensure that user entered
63    * parenthesis are displayed as-is on reading back
64    *
65    * Avik Sengupta <lists@aviksengupta.com>
66    * Andrew C. Oliver (acoliver at apache dot org)
67    */
68   public class ParenthesisPtg
69       extends OperationPtg
70   {
71      
72       private final static int SIZE = 1;
73       public final static byte sid  = 0x15;
74      
75       protected ParenthesisPtg()
76       {
77       }
78   
79       public ParenthesisPtg(byte [] data, int offset)
80       {
81   
82           // doesn't need anything
83       }
84       
85     
86       
87       public void writeBytes(byte [] array, int offset)
88       {
89           array[ offset + 0 ] = sid;
90       }
91   
92       public int getSize()
93       {
94           return SIZE;
95       }
96   
97       public int getType()
98       {
99           return TYPE_BINARY;
100      }
101  
102      public int getNumberOfOperands()
103      {
104          return 1;
105      }
106  
107      public String toFormulaString()
108      {
109          return "()";
110      }
111  
112            
113      public String toFormulaString(String[] operands) {
114          return "("+operands[0]+")";
115      }  
116      
117      public byte getDefaultOperandClass() {return Ptg.CLASS_VALUE;}
118          
119  }
120  
121