Island.StandardLib/EXTS/SyntaxException.cs

using System;

namespace EXTS
{
    public class SyntaxException : Exception
    {
        string mg;

        public int ErrorPos { get; private set; }
        public override string Message => mg;

        public SyntaxException(string msg, int pos)
        {
            ErrorPos = pos;
            mg = msg;
        }

        public override string ToString() => "EXTS 编译错误：在第 " + ErrorPos + "字符：" + Message;
    }
}