JumboTCMS_src/JumboTCMS.TEngine/Parser/TagParser.cs

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/*
 * 程序名称: JumboTCMS(将博内容管理系统通用版)
 * 
 * 程序版本: 7.x
 * 
 * 程序作者: 子木将博 (QQ：791104444@qq.com，仅限商业合作)
 * 
 * 版权申明: http://www.jumbotcms.net/about/copyright.html
 * 
 * 技术答疑: http://forum.jumbotcms.net/
 * 
 */

#region Using directives

using System;
using System.Collections.Generic;
using System.Text;

#endregion
using JumboTCMS.TEngine.Parser.AST;

namespace JumboTCMS.TEngine.Parser
{
    public class TagParser
    {
        List<Element> elements;

        public TagParser(List<Element> elements)
        {
            this.elements = elements;
        }

        public List<Element> CreateHierarchy()
        {
            List<Element> result = new List<Element>();

            for (int index = 0; index < elements.Count; index++)
            {
                Element elem = elements[index];

                if (elem is Text)
                    result.Add(elem);
                else if (elem is Expression)
                    result.Add(elem);
                else if (elem is Tag)
                {
                    result.Add(CollectForTag((Tag)elem, ref index));
                }
                else if (elem is TagClose)
                {
                    throw new ParseException("Close tag for " + ((TagClose)elem).Name + " doesn't have matching start tag.", elem.Line, elem.Col);
                }
                else
                    throw new ParseException("Invalid element: " + elem.GetType().ToString(), elem.Line, elem.Col);
            }

            return result;
        }