OoasTools

/**

  *

  *                      OOAS Compiler

  *

  *       Copyright 2015, AIT Austrian Institute of Technology.

  * This code is based on the C# Version of the OOAS Compiler, which is

  * copyright 2015 by the Institute of Software Technology, Graz University

  * of Technology with portions copyright by the AIT Austrian Institute of

  * Technology. All rights reserved.

  *

  * SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.

  *

  * If you modify the file please update the list of contributors below to in-

  * clude your name. Please also stick to the coding convention of using TABs

  * to do the basic (block-level) indentation and spaces for anything after

  * that. (Enable the display of special chars and it should be pretty obvious

  * what this means.) Also, remove all trailing whitespace.

  *

  * Contributors:

  *               Willibald Krenn (AIT)

  *               Stephan Zimmerer (AIT)

  *               Markus Demetz (AIT)

  *               Christoph Czurda (AIT)

  *

  */

package org.momut.ooas.codegen;

/// <summary>

/// Class that is used as text buffer during code emission

/// </summary>

public class OoasCodeEmitter

{

        private StringBuilder output;

        private int indentLevel;

        private final int indentTabWidth;

        public OoasCodeEmitter()

        {

                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--;

                        int startIndex = output.length() - indentTabWidth;

                        output.delete(startIndex, output.length());

                }

                this.AppendLine(text);

        }

        public void AppendLine(String text)

        {

                output.append(text);

                output.append("\n");

                Indent();

        }

        public void AppendLine()

        {

                output.append("\n");

                Indent();

        }

        public void IncIndent()

        {

                indentLevel++;

        }

        public void DecIndent()

        {

                indentLevel--;

        }

        public void Clear()

        {

                output = new StringBuilder();

        }

        @Override

        public String toString()

        {

                return output.toString();

        }

}