JumboTCMS_src/JumboTCMS.TEngine/Parser/TemplateParser.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 TemplateParser
    {
        TemplateLexer lexer;
        Token current;
        List<Element> elements;

        public TemplateParser(TemplateLexer lexer)
        {
            this.lexer = lexer;
            this.elements = new List<Element>();
        }

        Token Consume()
        {
            Token old = current;
            current = lexer.Next();
            return old;
        }

        Token Consume(TokenKind kind)
        {
            Token old = current;
            current = lexer.Next();

            if (old.TokenKind != kind)
                throw new ParseException("Unexpected token: " + current.TokenKind.ToString() + ". Was expecting: " + kind, current.Line, current.Col);

            return old;
        }

        Token Current
        {
            get { return current; }
        }