/*********************************************************************
 *
 *      Copyright (C) 2003 Andrew Khan
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package org.xbib.datastructures.xslx.jxl.biff.formula;

/**
 * A dummy implementation used for typing information when tokens
 * are read when parsing strings.  These are then stored by the parser before
 * being re-stored as the appropriate RPN syntactic equivalent
 */
class StringParseItem extends ParseItem {
    /**
     * Constructor
     */
    protected StringParseItem() {
    }

    /**
     * Gets the string representation of this item.  Does nothing here
     *
     * @param buf
     */
    void getString(StringBuffer buf) {
    }

    /**
     * Gets the token representation of this item in RPN.  Does nothing here
     *
     * @return the bytes applicable to this formula
     */
    byte[] getBytes() {
        return new byte[0];
    }

    /**
     * Default behaviour is to do nothing
     *
     * @param colAdjust the amount to add on to each relative cell reference
     * @param rowAdjust the amount to add on to each relative row reference
     */
    public void adjustRelativeCellReferences(int colAdjust, int rowAdjust) {
    }

    /**
     * Default behaviour is to do nothing
     *
     * @param sheetIndex   the sheet on which the column was inserted
     * @param col          the column number which was inserted
     * @param currentSheet TRUE if this formula is on the sheet in which the
     *                     column was inserted, FALSE otherwise
     */
    void columnInserted(int sheetIndex, int col, boolean currentSheet) {
    }

    /**
     * Called when a column is inserted on the specified sheet.  Tells
     * the formula  parser to update all of its cell references beyond this
     * column
     *
     * @param sheetIndex   the sheet on which the column was removed
     * @param col          the column number which was removed
     * @param currentSheet TRUE if this formula is on the sheet in which the
     *                     column was inserted, FALSE otherwise
     */
    void columnRemoved(int sheetIndex, int col, boolean currentSheet) {
    }

    /**
     * Called when a column is inserted on the specified sheet.  Tells
     * the formula  parser to update all of its cell references beyond this
     * column
     *
     * @param sheetIndex   the sheet on which the row was inserted
     * @param row          the row number which was inserted
     * @param currentSheet TRUE if this formula is on the sheet in which the
     *                     column was inserted, FALSE otherwise
     */
    void rowInserted(int sheetIndex, int row, boolean currentSheet) {
    }

    /**
     * Called when a column is inserted on the specified sheet.  Tells
     * the formula  parser to update all of its cell references beyond this
     * column
     *
     * @param sheetIndex   the sheet on which the row was removed
     * @param row          the row number which was removed
     * @param currentSheet TRUE if this formula is on the sheet in which the
     *                     column was inserted, FALSE otherwise
     */
    void rowRemoved(int sheetIndex, int row, boolean currentSheet) {
    }

    /**
     * If this formula was on an imported sheet, check that
     * cell references to another sheet are warned appropriately
     * Does nothing
     */
    void handleImportedCellReferences() {
    }

}
