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();

	}

}