LiteralValueNode.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Irony.Parsing;
using Irony.Interpreter;

namespace Irony.Interpreter.Ast {
  public class LiteralValueNode : AstNode {
    public object Value; 

    public override void Init(ParsingContext context, ParseTreeNode treeNode) {
      base.Init(context, treeNode); 
      Value = treeNode.Token.Value;
      AsString = Value == null ? "null" : Value.ToString();
      if (Value is string)
        AsString = "\"" + AsString + "\""; 
    }

    public override void EvaluateNode(EvaluationContext context, AstMode mode) {
      switch (mode) {
        case AstMode.Read: 
          context.Data.Push(Value); 
          break;
        case AstMode.Write: 
          context.ThrowError(Resources.ErrAssignLiteralValue);  
          break;  
      }
    }
  
  }//class
}