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RSyntaxTextArea is the syntax highlighting text editor for Swing applications. Features include syntax highlighting for 40+ languages, code folding, code completion, regex find and replace, macros, code templates, undo/redo, line numbering and bracket matching.

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/*
 * 04/24/2012
 *
 * LatexFoldParser.java - Fold parser for LaTeX.
 *
 * This library is distributed under a modified BSD license.  See the included
 * RSyntaxTextArea.License.txt file for details.
 */
package org.fife.ui.rsyntaxtextarea.folding;

import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import javax.swing.text.BadLocationException;

import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
import org.fife.ui.rsyntaxtextarea.Token;


/**
 * A fold parser for LaTeX documents.  This is likely incomplete and/or not
 * quite right; feedback is appreciated.
 *
 * @author Robert Futrell
 * @version 1.0
 */
public class LatexFoldParser implements FoldParser {

	private static final char[] BEGIN = "\\begin".toCharArray();
	private static final char[] END = "\\end".toCharArray();


	/**
	 * {@inheritDoc}
	 */
	@Override
	public List getFolds(RSyntaxTextArea textArea) {

		List folds = new ArrayList();
		Stack expectedStack = new Stack();

		Fold currentFold = null;
		int lineCount = textArea.getLineCount();

		try {

			for (int line=0; line