1 /*********************************************************************
2 *
3 * Copyright (C) 2003 Andrew Khan
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 ***************************************************************************/
19
20 package jxl.biff.formula;
21
22 /**
23 * A dummy implementation used for typing information when tokens
24 * are read when parsing strings. These are then stored by the parser before
25 * being re-stored as the appropriate RPN syntactic equivalent
26 */
27 class StringParseItem extends ParseItem
28 {
29 /**
30 * Constructor
31 */
32 protected StringParseItem()
33 {
34 }
35
36 /**
37 * Gets the string representation of this item. Does nothing here
38 *
39 * @param buf
40 */
41 void getString(StringBuffer buf)
42 {
43 }
44
45 /**
46 * Gets the token representation of this item in RPN. Does nothing here
47 *
48 * @return the bytes applicable to this formula
49 */
50 byte[] getBytes()
51 {
52 return new byte[0];
53 }
54
55 /**
56 * Default behaviour is to do nothing
57 *
58 * @param colAdjust the amount to add on to each relative cell reference
59 * @param rowAdjust the amount to add on to each relative row reference
60 */
61 public void adjustRelativeCellReferences(int colAdjust, int rowAdjust)
62 {
63 }
64
65 /**
66 * Default behaviour is to do nothing
67 *
68 * @param sheetIndex the sheet on which the column was inserted
69 * @param col the column number which was inserted
70 * @param currentSheet TRUE if this formula is on the sheet in which the
71 * column was inserted, FALSE otherwise
72 */
73 void columnInserted(int sheetIndex, int col, boolean currentSheet)
74 {
75 }
76
77 /**
78 * Called when a column is inserted on the specified sheet. Tells
79 * the formula parser to update all of its cell references beyond this
80 * column
81 *
82 * @param sheetIndex the sheet on which the column was removed
83 * @param col the column number which was removed
84 * @param currentSheet TRUE if this formula is on the sheet in which the
85 * column was inserted, FALSE otherwise
86 */
87 void columnRemoved(int sheetIndex, int col, boolean currentSheet)
88 {
89 }
90
91 /**
92 * Called when a column is inserted on the specified sheet. Tells
93 * the formula parser to update all of its cell references beyond this
94 * column
95 *
96 * @param sheetIndex the sheet on which the row was inserted
97 * @param row the row number which was inserted
98 * @param currentSheet TRUE if this formula is on the sheet in which the
99 * column was inserted, FALSE otherwise
100 */
101 void rowInserted(int sheetIndex, int row, boolean currentSheet)
102 {
103 }
104
105 /**
106 * Called when a column is inserted on the specified sheet. Tells
107 * the formula parser to update all of its cell references beyond this
108 * column
109 *
110 * @param sheetIndex the sheet on which the row was removed
111 * @param row the row number which was removed
112 * @param currentSheet TRUE if this formula is on the sheet in which the
113 * column was inserted, FALSE otherwise
114 */
115 void rowRemoved(int sheetIndex, int row, boolean currentSheet)
116 {
117 }
118
119 /**
120 * If this formula was on an imported sheet, check that
121 * cell references to another sheet are warned appropriately
122 * Does nothing
123 */
124 void handleImportedCellReferences()
125 {
126 }
127
128 }
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