rangeseparator.cs

Excel的操作,其中可以读取及写入Excel 文件

using System;
using System.Collections;

using Microsoft.Fawvw.Components.NExcel.Biff;

namespace Microsoft.Fawvw.Components.NExcel.Biff.Formula
{
	
	/// <summary> A "holding" token for a range separator.  This token gets instantiated
	/// when the lexical analyzer can't distinguish a range cleanly, eg in the
	/// case where where one of the identifiers of the range is a formula
	/// </summary>
	class RangeSeparator:BinaryOperator, ParsedThing
	{
		/// <summary> Abstract method which gets the token for this operator
		/// 
		/// </summary>
		/// <returns> the string symbol for this token
		/// </returns>
		override internal Token Token
		{
			get
			{
				return Token.RANGE;
			}
			
		}
		/// <summary> Gets the precedence for this operator.  Operator precedents run from 
		/// 1 to 5, one being the highest, 5 being the lowest
		/// 
		/// </summary>
		/// <returns> the operator precedence
		/// </returns>
		override internal int Precedence
		{
			get
			{
				return 1;
			}
			
		}
		/// <summary> Constructor</summary>
		public RangeSeparator()
		{
		}
		
		public override string getSymbol()
		{
			return ":";
		}
		
		/// <summary> Overrides the getBytes() method in the base class and prepends the 
		/// memFunc token
		/// 
		/// </summary>
		/// <returns> the bytes
		/// </returns>
		internal override sbyte[] Bytes
		{
		get
		{
		setVolatile();
		setOperandAlternateCode();
		
		sbyte[] funcBytes = base.Bytes;
		
		sbyte[] bytes = new sbyte[funcBytes.Length + 3];
		Array.Copy(funcBytes, 0, bytes, 3, funcBytes.Length);
		
		// Indicate the mem func 
		bytes[0] = Token.MEM_FUNC.Code;
		IntegerHelper.getTwoBytes(funcBytes.Length, bytes, 1);
		
		return bytes;
		}
		}
	}
}