stringfunction.cs

来自「Excel的操作,其中可以读取及写入Excel 文件」· CS 代码 · 共 43 行

using System;

namespace Microsoft.Fawvw.Components.NExcel.Biff.Formula
{
	/// <summary> Class used to hold a function when reading it in from a string.  At this
	/// stage it is unknown whether it is a BuiltInFunction or a VariableArgFunction
	/// </summary>
	class StringFunction:StringParseItem
	{
		/// <summary> The function</summary>
		private Function function;
		
		/// <summary> The function string</summary>
		private string functionString;
		
		/// <summary> Constructor
		/// 
		/// </summary>
		/// <param name="s">the lexically parsed stirng
		/// </param>
		internal StringFunction(string s)
		{
			functionString = s.Substring(0, (s.Length - 1) - (0));
		}
		
		/// <summary> Accessor for the function
		/// 
		/// </summary>
		/// <param name="ws">the workbook settings
		/// </param>
		/// <returns> the function
		/// </returns>
		internal virtual Function getFunction(WorkbookSettings ws)
		{
			if (function == null)
			{
				function = Function.getFunction(functionString, ws);
			}
			return function;
		}
	}
}