/**
  *
  *                      OOAS Compiler (Deprecated)
  *
  * Copyright 2015, Institute for Software Technology, Graz University of
  * Technology. Portions are copyright 2015 by the AIT Austrian Institute
  * of Technology. All rights reserved.
  *
  * SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.
  *
  * Please notice that this version of the OOAS compiler is considered de-
  * precated. Only the Java version is maintained.
  *
  * Contributors:
  *               Willibald Krenn (TU Graz/AIT)
  *               Stefan Tiran (TU Graz/AIT)
  */

using System;
using System.Collections.Generic;
using System.Text;

namespace TUG.Mogentes.Codegen
{
    /// <summary>
    /// Class that is used as text buffer during code emission
    /// </summary>
    public class OoaCodeEmitter
    {
        private StringBuilder output;
        private int indentLevel;
        private int indentTabWidth;


        public OoaCodeEmitter()
        {
            indentLevel = 0;
            indentTabWidth = 4;
            output = new StringBuilder();
        }

        public void Indent()
        {
            for (int i = 0; i < indentLevel * indentTabWidth; i++)
                output.Append(" ");
        }

        public void Append(int num)
        {
            output.Append(num);
        }

        public void Append(string text)
        {
            output.Append(text);
        }

        public void AppendLineIncIndent(string text)
        {
            indentLevel++;
            this.AppendLine(text);
        }

        public void AppendLineDecIndent(string text)
        {
            if (indentLevel > 0)
            {
                indentLevel--;
                output.Remove(output.Length - indentTabWidth, indentTabWidth);
            }
            this.AppendLine(text);
        }


        public void AppendLine(string text)
        {
            output.AppendLine(text);
            Indent();
        }

        public void AppendLine()
        {
            output.AppendLine();
            Indent();
        }



        public void IncIndent()
        {
            indentLevel++;
        }

        public void DecIndent()
        {
            indentLevel--;
        }

        public void Clear()
        {
            output = new StringBuilder();
        }


        public override string ToString()
        {
            return output.ToString();
        }

    }
}