namespace com.azkoss.excellite
{
    using System;

    ///<summary>
    ///Base formula token class for inheritance
    ///</summary>
    internal abstract class FormulaToken
    {
        // Methods
        ///<summary>
        ///Initializes a new instance of the <see cref="com.azkoss.excellite.FormulaToken" /> class.
        ///</summary>
        ///<param name="code">The code.</param>
        ///<param name="size">The size.</param>
        public FormulaToken(FormulaTokenCode code, int size) : this(code, size, FormulaTokenType.Empty)
        {
        }

        public FormulaToken(FormulaTokenCode code, int size, FormulaTokenType type)
        {
            this.token = code;
            this.size = size;
            this.type = new FormulaTokenTypeEx(type);
        }

        ///<summary>
        ///Convert formula token to bytes representation.
        ///</summary>
        ///<returns>bytes representation of the formula token</returns>
        public virtual byte[] ConvertToBytes()
        {
            byte[] buffer1 = new byte[this.Size];
            buffer1[0] = (byte) this.Token;
            return buffer1;
        }

        ///<summary>
        ///Make custom delay initialize.
        ///</summary>
        ///<param name="data">The data for initialization which is unique for each formula token.</param>
        public virtual void DelayInitialize(object[] data)
        {
        }

        ///<summary>
        ///Initialize formula token by reading input data from array of bytes
        ///</summary>
        ///<param name="rpnBytes">input data, array of bytes</param>
        ///<param name="startIndex">start position for array of bytes to read from</param>
        public virtual void Read(byte[] rpnBytes, int startIndex)
        {
        }

        ///<summary>
        ///Convert formula token to string representation.
        ///</summary>
        ///<returns>formula token string representation</returns>
        public override string ToString()
        {
            return string.Empty;
        }


        // Properties
        public byte Code
        {
            get
            {
                return (byte) this.Token;
            }
        }

        ///<summary>
        ///Gets the size of the formula token.
        ///</summary>
        ///<value>The size of the formula token.</value>
        public virtual int Size
        {
            get
            {
                return this.size;
            }
        }

        ///<summary>
        ///Gets the formula token code.
        ///</summary>
        ///<value>The formula token code.</value>
        protected FormulaTokenCode Token
        {
            get
            {
                return this.token;
            }
        }

        public FormulaTokenTypeEx Type
        {
            get
            {
                return this.type;
            }
        }


        // Fields
        private int size;
        private FormulaTokenCode token;
        private FormulaTokenTypeEx type;
    }
}