BN089-BS开发框架MVC4版/source20131023/Zephyr.Net/Zephyr.Utils/Document/Excel/NPOI/SS/Formula/OperationEvaluationContext.cs

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namespace Zephyr.Utils.NPOI.SS.Formula
{
    using System;
    using Zephyr.Utils.NPOI.SS.Formula.Eval;
    using Zephyr.Utils.NPOI.SS.Formula.Functions;
    using Zephyr.Utils.NPOI.SS.Util;
    using Zephyr.Utils.NPOI.SS.Formula;
    using Zephyr.Utils.NPOI.SS.Formula.PTG;
    using System.Globalization;
    /**
     * Contains all the contextual information required to Evaluate an operation
     * within a formula
     *
     * For POI internal use only
     *
     * @author Josh Micich
     */
    public class OperationEvaluationContext
    {
        public static FreeRefFunction UDF = UserDefinedFunction.instance;
        private IEvaluationWorkbook _workbook;
        private int _sheetIndex;
        private int _rowIndex;
        private int _columnIndex;
        private EvaluationTracker _tracker;
        private WorkbookEvaluator _bookEvaluator;

        public OperationEvaluationContext(WorkbookEvaluator bookEvaluator, IEvaluationWorkbook workbook, int sheetIndex, int srcRowNum,
                int srcColNum, EvaluationTracker tracker)
        {
            _bookEvaluator = bookEvaluator;
            _workbook = workbook;
            _sheetIndex = sheetIndex;
            _rowIndex = srcRowNum;
            _columnIndex = srcColNum;
            _tracker = tracker;
        }

        public IEvaluationWorkbook GetWorkbook()
        {
            return _workbook;
        }

        public int RowIndex
        {
            get
            {
                return _rowIndex;
            }
        }

        public int ColumnIndex
        {
            get
            {
                return _columnIndex;
            }
        }

        SheetRefEvaluator CreateExternSheetRefEvaluator(IExternSheetReferenceToken ptg)
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