NVelocity/Runtime/Parser/Node/ASTDivNode.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

namespace NVelocity.Runtime.Parser.Node
{
	using System;
	using Context;

	/// <summary> Handles integer division of nodes
	/// 
	/// Please look at the Parser.jjt file which is
	/// what controls the generation of this class.
	/// </summary>
	/// <author> <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> </author>
	/// <author> <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a> </author>
	/// <version> $Id: ASTDivNode.cs,v 1.3 2003/10/27 13:54:10 corts Exp $ </version>
	public class ASTDivNode : SimpleNode
	{
		public ASTDivNode(int id) : base(id)
		{
		}

		public ASTDivNode(Parser p, int id) : base(p, id)
		{
		}

		/// <summary>
		/// Accept the visitor.
		/// </summary>
		public override Object Accept(IParserVisitor visitor, Object data)
		{
			return visitor.Visit(this, data);
		}

		/// <summary>
		/// Computes the result of the division. Currently limited to Integers.
		/// </summary>
		/// <returns>Integer(value) or null</returns>
		public override Object Value(IInternalContextAdapter context)
		{
			// get the two args
			Object left = GetChild(0).Value(context);
			Object right = GetChild(1).Value(context);

			// if either is null, lets log and bail
			if (left == null || right == null)
			{
				rsvc.Error((left == null ? "Left" : "Right") + " side (" + GetChild((left == null ? 0 : 1)).Literal +
				           ") of division operation has null value." + " Operation not possible. " + context.CurrentTemplateName +
				           " [line " + Line + ", column " + Column + "]");
				return null;
			}

			// if not an Integer, not much we can do either
//			if (!(left is Int32) || !(right is Int32))
//			{
//				rsvc.Error((!(left is Int32) ? "Left" : "Right") + " side of division operation is not a valid type. " + "Currently only integers (1,2,3...) and Integer type is supported. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
//
//				return null;
//			}

			Type maxType = MathUtil.ToMaxType(left.GetType(), right.GetType());