VTemplate.Engine/VariableExpression.cs

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/* ***********************************************
 * Author		:  kingthy
 * Email		:  kingthy@gmail.com
 * Description	:  VariableField
 *
 * ***********************************************/
using System;
using System.Collections.Generic;
using System.Text;

namespace VTemplate.Engine
{
    /// <summary>
    /// 变量表达式,如:{$:name.age} 变量元素中的变量表达式则是".age"
    /// </summary>
    public class VariableExpression : IExpression
    {
        /// <summary>
        /// 变量表达式
        /// </summary>
        /// <param name="variableId"></param>
        /// <param name="needCacheData"></param>
        internal VariableExpression(VariableIdentity variableId, bool needCacheData) 
            : this(variableId, null, false, needCacheData)
        { }
        /// <summary>
        /// 变量表达式
        /// </summary>
        /// <param name="variableId"></param>
        /// <param name="fieldName"></param>
        /// <param name="isMethod"></param>
        /// <param name="needCacheData"></param>
        internal VariableExpression(VariableIdentity variableId, string fieldName, bool isMethod, bool needCacheData)
        {
            this.VariableId = variableId;
            this.FieldName = fieldName;
            this.IsMethod = isMethod;
            this.NeedCacheData = needCacheData;
        }
        /// <summary>
        /// 变量表达式
        /// </summary>
        /// <param name="parentExp"></param>
        /// <param name="fieldName"></param>
        /// <param name="isMethod"></param>
        internal VariableExpression(VariableExpression parentExp, string fieldName, bool isMethod)
        {
            parentExp.NextExpression = this;
            this.ParentExpression = parentExp;
            this.VariableId = parentExp.VariableId;
            this.FieldName = fieldName;
            this.IsMethod = isMethod;
            this.NeedCacheData = parentExp.NeedCacheData;
        }
        /// <summary>
        /// 变量标识
        /// </summary>
        public VariableIdentity VariableId { get; private set; }
        /// <summary>
        /// 字段名