/* The following code was generated by JFlex 1.4.1 on 8/9/13 11:40 AM */
/*
 * 09/20/2008
 * MakefileTokenMaker.java - Scanner for makefiles.
 * This library is distributed under a modified BSD license. See the included
 * RSyntaxTextArea.License.txt file for details.
 */
package org.fife.ui.rsyntaxtextarea.modes;

import java.io.IOException;
import java.io.Reader;
import java.util.Stack;

import javax.swing.text.Segment;

import org.fife.ui.rsyntaxtextarea.AbstractJFlexTokenMaker;
import org.fife.ui.rsyntaxtextarea.Token;
import org.fife.ui.rsyntaxtextarea.TokenImpl;

/**
 * Scanner for makefiles.
 * <p>
 *
 * This implementation was created using
 * <a href="http://www.jflex.de/">JFlex</a> 1.4.1; however, the generated file
 * was modified for performance. Memory allocation needs to be almost completely
 * removed to be competitive with the handwritten lexers (subclasses of
 * <code>AbstractTokenMaker</code>, so this class has been modified so that
 * Strings are never allocated (via yytext()), and the scanner never has to
 * worry about refilling its buffer (needlessly copying chars around). We can
 * achieve this because RText always scans exactly 1 line of tokens at a time,
 * and hands the scanner this line as an array of characters (a Segment really).
 * Since tokens contain pointers to char arrays instead of Strings holding their
 * contents, there is no need for allocating new memory for Strings.
 * <p>
 *
 * The actual algorithm generated for scanning has, of course, not been
 * modified.
 * <p>
 *
 * If you wish to regenerate this file yourself, keep in mind the following:
 * <ul>
 * <li>The generated <code>MakefileTokenMaker.java</code> file will contain two
 * definitions of both <code>zzRefill</code> and <code>yyreset</code>. You
 * should hand-delete the second of each definition (the ones generated by the
 * lexer), as these generated methods modify the input buffer, which we'll never
 * have to do.</li>
 * <li>You should also change the declaration/definition of zzBuffer to NOT be
 * initialized. This is a needless memory allocation for us since we will be
 * pointing the array somewhere else anyway.</li>
 * <li>You should NOT call <code>yylex()</code> on the generated scanner
 * directly; rather, you should use <code>getTokenList</code> as you would with
 * any other <code>TokenMaker</code> instance.</li>
 * </ul>
 *
 * @author Robert Futrell
 * @version 0.5
 *
 */
public class MakefileTokenMaker extends AbstractJFlexTokenMaker {

	/** This character denotes the end of file */
	public static final int YYEOF = -1;
	/** lexical states */
	public static final int VAR = 1;
	public static final int YYINITIAL = 0;
	/**
	 * Translates characters to character classes
	 */
	private static final String ZZ_CMAP_PACKED = "\11\0\1\10\1\7\1\0\1\10\23\0\1\10\1\0\1\13\1\15"
			+ "\1\4\2\0\1\11\1\6\1\47\1\0\1\16\1\0\1\37\1\1" + "\1\0\12\2\1\3\2\0\1\17\1\0\1\16\1\0\32\1\1\0"
			+ "\1\12\2\0\1\1\1\14\1\20\1\32\1\43\1\21\1\24\1\25" + "\1\41\1\44\1\26\1\45\1\1\1\35\1\34\1\33\1\40\1\22"
			+ "\1\46\1\23\1\30\1\36\1\31\1\1\1\42\1\27\2\1\1\5" + "\1\0\1\50\uff82\0";
	/**
	 * Translates characters to character classes
	 */
	private static final char[] ZZ_CMAP = zzUnpackCMap(ZZ_CMAP_PACKED);
	/**
	 * Translates DFA states to action switch labels.
	 */
	private static final int[] ZZ_ACTION = zzUnpackAction();
	private static final String ZZ_ACTION_PACKED_0 = "\2\0\2\1\1\2\2\1\1\3\1\4\1\5\1\6"
			+ "\1\1\1\7\1\10\14\1\2\11\1\12\1\13\1\14" + "\1\15\1\16\1\17\1\20\1\5\1\6\1\21\2\0"
			+ "\1\22\23\1\1\23\1\24\1\20\1\21\1\22\2\1" + "\1\25\43\1\1\25\14\1\1\25\5\1\1\0\2\1" + "\1\0\1\1\1\0\1\25";

	private static int[] zzUnpackAction() {
		int[] result = new int[129];
		int offset = 0;
		offset = zzUnpackAction(ZZ_ACTION_PACKED_0, offset, result);
		return result;
	}

	private static int zzUnpackAction(String packed, int offset, int[] result) {
		int i = 0; /* index in packed string */
		int j = offset; /* index in unpacked array */
		int l = packed.length();
		while (i < l) {
			int count = packed.charAt(i++);
			int value = packed.charAt(i++);
			do
				result[j++] = value;
			while (--count > 0);
		}
		return j;
	}

	/**
	 * Translates a state to a row index in the transition table
	 */
	private static final int[] ZZ_ROWMAP = zzUnpackRowMap();
	private static final String ZZ_ROWMAP_PACKED_0 = "\0\0\0\51\0\122\0\173\0\244\0\315\0\366\0\122"
			+ "\0\u011f\0\u0148\0\u0171\0\u019a\0\u01c3\0\122\0\u01ec\0\u0215"
			+ "\0\u023e\0\u0267\0\u0290\0\u02b9\0\u02e2\0\u030b\0\u0334\0\u035d"
			+ "\0\u0386\0\u03af\0\u03d8\0\u0401\0\u042a\0\122\0\122\0\122"
			+ "\0\122\0\122\0\122\0\u0453\0\u047c\0\122\0\u019a\0\u04a5"
			+ "\0\122\0\u04ce\0\u04f7\0\u0520\0\u0549\0\u0572\0\u059b\0\u05c4"
			+ "\0\u05ed\0\u0616\0\u063f\0\u0668\0\u0691\0\u06ba\0\u06e3\0\u070c"
			+ "\0\u0735\0\u075e\0\u0787\0\u07b0\0\122\0\122\0\u0148\0\u0171"
			+ "\0\u019a\0\u07d9\0\u0802\0\173\0\u082b\0\u0854\0\u087d\0\u08a6"
			+ "\0\u08cf\0\u08f8\0\u0921\0\u094a\0\u0973\0\u099c\0\u09c5\0\u09ee"
			+ "\0\u0a17\0\u0a40\0\u0a69\0\u0a92\0\u0abb\0\u0ae4\0\u0b0d\0\u0b36"
			+ "\0\u0b5f\0\u0b88\0\u0bb1\0\u0bda\0\u0c03\0\u0c2c\0\u0c55\0\u0c7e"
			+ "\0\u0ca7\0\u0cd0\0\u0cf9\0\u0d22\0\u0d4b\0\u0d74\0\u0d9d\0\u0dc6"
			+ "\0\u0def\0\u0e18\0\u0e41\0\u0e6a\0\u0e93\0\u0ebc\0\u0ee5\0\u0f0e"
			+ "\0\u0f37\0\u0f60\0\u0f89\0\u0fb2\0\u0fdb\0\u1004\0\u102d\0\u1056"
			+ "\0\u107f\0\u10a8\0\u10d1\0\u10fa\0\u1123\0\u114c\0\u1175\0\u119e" + "\0\122";

	private static int[] zzUnpackRowMap() {
		int[] result = new int[129];
		int offset = 0;
		offset = zzUnpackRowMap(ZZ_ROWMAP_PACKED_0, offset, result);
		return result;
	}

	private static int zzUnpackRowMap(String packed, int offset, int[] result) {
		int i = 0; /* index in packed string */
		int j = offset; /* index in unpacked array */
		int l = packed.length();
		while (i < l) {
			int high = packed.charAt(i++) << 16;
			result[j++] = high | packed.charAt(i++);
		}
		return j;
	}

	/**
	 * The transition table of the DFA
	 */
	private static final int[] ZZ_TRANS = zzUnpackTrans();
	private static final String ZZ_TRANS_PACKED_0 = "\1\3\1\4\1\5\1\6\1\7\2\3\1\10\1\11"
			+ "\1\12\1\3\1\13\1\14\1\15\1\6\1\16\1\17" + "\1\20\1\21\1\4\1\22\1\23\1\24\1\4\1\25"
			+ "\1\4\1\26\1\27\3\4\1\3\1\30\1\4\1\31" + "\2\4\1\32\1\4\2\3\4\33\1\34\10\33\1\35"
			+ "\31\33\1\36\1\37\52\0\2\4\1\40\14\0\17\4" + "\1\0\7\4\4\0\1\5\65\0\1\16\36\0\1\41"
			+ "\1\42\52\0\1\11\40\0\7\12\1\0\1\12\1\43" + "\1\44\36\12\7\13\1\0\2\13\1\45\1\46\35\13"
			+ "\7\47\1\0\2\47\1\50\1\47\1\51\34\47\7\15" + "\1\0\41\15\1\0\2\4\1\40\14\0\1\4\1\52"
			+ "\15\4\1\0\7\4\3\0\2\4\1\40\14\0\4\4" + "\1\53\1\4\1\54\10\4\1\0\7\4\3\0\2\4"
			+ "\1\40\14\0\1\55\16\4\1\0\7\4\3\0\2\4" + "\1\40\14\0\13\4\1\56\1\4\1\57\1\4\1\0"
			+ "\7\4\3\0\2\4\1\40\14\0\6\4\1\60\10\4" + "\1\0\1\61\6\4\3\0\2\4\1\40\14\0\5\4"
			+ "\1\62\11\4\1\0\7\4\3\0\2\4\1\40\14\0" + "\11\4\1\63\4\4\1\64\1\0\1\65\3\4\1\66"
			+ "\2\4\3\0\2\4\1\40\14\0\1\67\16\4\1\0" + "\7\4\3\0\2\4\1\40\14\0\17\4\1\0\1\70"
			+ "\6\4\3\0\2\4\1\40\14\0\3\4\1\71\13\4" + "\1\0\7\4\3\0\2\4\1\40\14\0\6\4\1\72"
			+ "\10\4\1\0\1\73\6\4\3\0\2\4\1\40\14\0" + "\17\4\1\0\1\74\6\4\2\0\4\33\1\0\10\33"
			+ "\1\0\31\33\7\0\1\75\1\76\42\0\7\35\1\0" + "\41\35\7\12\1\0\1\12\1\77\1\44\36\12\7\13"
			+ "\1\0\2\13\1\45\1\100\35\13\7\47\1\0\2\47" + "\1\50\1\47\1\101\34\47\1\0\2\4\1\40\14\0"
			+ "\1\4\1\102\15\4\1\0\7\4\3\0\2\4\1\40" + "\14\0\5\4\1\103\11\4\1\0\7\4\3\0\2\4"
			+ "\1\40\14\0\3\4\1\104\13\4\1\0\7\4\3\0" + "\2\4\1\40\14\0\16\4\1\105\1\0\7\4\3\0"
			+ "\2\4\1\40\14\0\1\4\1\106\15\4\1\0\7\4" + "\3\0\2\4\1\40\14\0\10\4\1\107\6\4\1\0"
			+ "\7\4\3\0\2\4\1\40\14\0\3\4\1\110\7\4" + "\1\111\1\4\1\112\1\4\1\0\7\4\3\0\2\4"
			+ "\1\40\14\0\3\4\1\113\13\4\1\0\7\4\3\0" + "\2\4\1\40\14\0\1\4\1\114\2\4\1\115\6\4"
			+ "\1\116\3\4\1\0\7\4\3\0\2\4\1\40\14\0" + "\5\4\1\117\11\4\1\0\7\4\3\0\2\4\1\40"
			+ "\14\0\3\4\1\120\13\4\1\0\7\4\3\0\2\4" + "\1\40\14\0\3\4\1\121\13\4\1\0\7\4\3\0"
			+ "\2\4\1\40\14\0\4\4\1\122\12\4\1\0\7\4" + "\3\0\2\4\1\40\14\0\10\4\1\123\6\4\1\0"
			+ "\7\4\3\0\2\4\1\40\14\0\16\4\1\124\1\0" + "\7\4\3\0\2\4\1\40\14\0\6\4\1\125\10\4"
			+ "\1\0\7\4\3\0\2\4\1\40\14\0\15\4\1\126" + "\1\4\1\0\7\4\3\0\2\4\1\40\14\0\3\4"
			+ "\1\127\13\4\1\0\7\4\3\0\2\4\1\40\14\0" + "\6\4\1\130\10\4\1\0\7\4\3\0\2\4\1\40"
			+ "\14\0\2\4\1\131\5\4\1\132\6\4\1\0\7\4" + "\3\0\2\4\1\40\14\0\6\4\1\133\10\4\1\0"
			+ "\7\4\3\0\2\4\1\40\14\0\17\4\1\0\4\4" + "\1\134\2\4\3\0\2\4\1\40\14\0\4\4\1\135"
			+ "\1\4\1\135\10\4\1\0\7\4\3\0\2\4\1\40" + "\14\0\4\4\1\104\12\4\1\0\7\4\3\0\2\4"
			+ "\1\40\14\0\10\4\1\136\6\4\1\0\7\4\3\0" + "\2\4\1\40\14\0\1\4\1\137\15\4\1\0\7\4"
			+ "\3\0\2\4\1\40\14\0\16\4\1\140\1\0\7\4" + "\3\0\2\4\1\40\14\0\4\4\1\141\12\4\1\0"
			+ "\7\4\3\0\2\4\1\40\14\0\4\4\1\135\12\4" + "\1\0\7\4\3\0\2\4\1\40\14\0\17\4\1\0"
			+ "\6\4\1\104\3\0\2\4\1\40\14\0\1\4\1\114" + "\2\4\1\115\12\4\1\0\7\4\3\0\2\4\1\40"
			+ "\14\0\5\4\1\142\11\4\1\0\7\4\3\0\2\4" + "\1\40\14\0\6\4\1\143\10\4\1\0\7\4\3\0"
			+ "\2\4\1\40\14\0\16\4\1\104\1\0\7\4\3\0" + "\2\4\1\40\14\0\15\4\1\144\1\4\1\0\7\4"
			+ "\3\0\2\4\1\40\14\0\4\4\1\145\12\4\1\0" + "\7\4\3\0\2\4\1\40\14\0\1\4\1\146\15\4"
			+ "\1\0\7\4\3\0\2\4\1\40\14\0\17\4\1\0" + "\1\4\1\74\5\4\3\0\2\4\1\40\14\0\1\4"
			+ "\1\147\15\4\1\0\7\4\3\0\2\4\1\40\14\0" + "\1\4\1\150\15\4\1\0\7\4\3\0\2\4\1\40"
			+ "\14\0\13\4\1\104\3\4\1\0\7\4\3\0\2\4" + "\1\40\14\0\3\4\1\151\13\4\1\0\7\4\3\0"
			+ "\2\4\1\40\14\0\11\4\1\63\5\4\1\0\7\4" + "\3\0\2\4\1\40\14\0\13\4\1\107\3\4\1\0"
			+ "\7\4\3\0\2\4\1\40\14\0\10\4\1\152\6\4" + "\1\0\7\4\3\0\2\4\1\40\14\0\5\4\1\104"
			+ "\11\4\1\0\7\4\3\0\2\4\1\40\14\0\16\4" + "\1\153\1\0\7\4\3\0\2\4\1\40\14\0\10\4"
			+ "\1\154\6\4\1\0\7\4\3\0\2\4\1\40\14\0" + "\4\4\1\155\12\4\1\0\7\4\3\0\2\4\1\40"
			+ "\14\0\1\156\16\4\1\0\7\4\3\0\2\4\1\40" + "\14\0\6\4\1\157\10\4\1\0\7\4\3\0\2\4"
			+ "\1\40\14\0\2\4\1\104\14\4\1\0\7\4\3\0" + "\2\4\1\40\14\0\15\4\1\104\1\4\1\0\7\4"
			+ "\3\0\2\4\1\40\14\0\13\4\1\160\3\4\1\0" + "\7\4\3\0\2\4\1\40\14\0\6\4\1\54\10\4"
			+ "\1\0\7\4\3\0\2\4\1\40\14\0\17\4\1\0" + "\3\4\1\161\3\4\3\0\2\4\1\40\14\0\10\4"
			+ "\1\104\6\4\1\0\7\4\3\0\2\4\1\40\14\0" + "\4\4\1\117\12\4\1\0\7\4\3\0\2\4\1\40"
			+ "\14\0\11\4\1\162\5\4\1\0\7\4\3\0\2\4" + "\1\40\14\0\17\4\1\0\2\4\1\163\4\4\3\0"
			+ "\2\4\1\40\14\0\16\4\1\164\1\0\7\4\3\0" + "\2\4\1\40\14\0\3\4\1\165\13\4\1\0\7\4"
			+ "\3\0\2\4\1\40\14\0\17\4\1\0\3\4\1\166" + "\3\4\3\0\2\4\1\40\14\0\7\4\1\104\7\4"
			+ "\1\0\7\4\3\0\2\4\1\40\14\0\1\167\16\4" + "\1\0\7\4\3\0\2\4\1\40\14\0\1\170\16\4"
			+ "\1\0\7\4\3\0\2\4\1\40\14\0\12\4\1\171" + "\4\4\1\0\7\4\3\0\2\4\1\40\14\0\17\4"
			+ "\1\0\1\170\6\4\3\0\2\4\1\40\14\0\3\4" + "\1\172\13\4\1\0\7\4\3\0\2\4\1\40\14\0"
			+ "\17\4\1\173\7\4\3\0\2\4\1\40\14\0\17\4" + "\1\0\4\4\1\104\2\4\3\0\2\4\1\40\14\0"
			+ "\14\4\1\107\2\4\1\0\7\4\3\0\2\4\1\40" + "\14\0\3\4\1\174\13\4\1\0\7\4\3\0\2\4"
			+ "\1\40\14\0\10\4\1\121\6\4\1\0\7\4\3\0" + "\2\4\1\40\14\0\6\4\1\175\10\4\1\0\7\4"
			+ "\42\0\1\176\11\0\2\4\1\40\14\0\1\4\1\104" + "\15\4\1\0\7\4\3\0\2\4\1\40\14\0\13\4"
			+ "\1\177\3\4\1\0\7\4\33\0\1\200\20\0\2\4" + "\1\40\14\0\17\4\1\0\1\4\1\104\5\4\40\0" + "\1\201\12\0";

	private static int[] zzUnpackTrans() {
		int[] result = new int[4551];
		int offset = 0;
		offset = zzUnpackTrans(ZZ_TRANS_PACKED_0, offset, result);
		return result;
	}

	private static int zzUnpackTrans(String packed, int offset, int[] result) {
		int i = 0; /* index in packed string */
		int j = offset; /* index in unpacked array */
		int l = packed.length();
		while (i < l) {
			int count = packed.charAt(i++);
			int value = packed.charAt(i++);
			value--;
			do
				result[j++] = value;
			while (--count > 0);
		}
		return j;
	}

	/* error codes */
	private static final int ZZ_UNKNOWN_ERROR = 0;
	private static final int ZZ_NO_MATCH = 1;
	private static final int ZZ_PUSHBACK_2BIG = 2;
	/* error messages for the codes above */
	private static final String ZZ_ERROR_MSG[] = { "Unkown internal scanner error", "Error: could not match input",
			"Error: pushback value was too large" };
	/**
	 * ZZ_ATTRIBUTE[aState] contains the attributes of state <code>aState</code>
	 */
	private static final int[] ZZ_ATTRIBUTE = zzUnpackAttribute();
	private static final String ZZ_ATTRIBUTE_PACKED_0 = "\2\0\1\11\4\1\1\11\5\1\1\11\17\1\6\11"
			+ "\2\1\1\11\2\0\1\11\23\1\2\11\74\1\1\0" + "\2\1\1\0\1\1\1\0\1\11";

	private static int[] zzUnpackAttribute() {
		int[] result = new int[129];
		int offset = 0;
		offset = zzUnpackAttribute(ZZ_ATTRIBUTE_PACKED_0, offset, result);
		return result;
	}

	private static int zzUnpackAttribute(String packed, int offset, int[] result) {
		int i = 0; /* index in packed string */
		int j = offset; /* index in unpacked array */
		int l = packed.length();
		while (i < l) {
			int count = packed.charAt(i++);
			int value = packed.charAt(i++);
			do
				result[j++] = value;
			while (--count > 0);
		}
		return j;
	}

	/** the input device */
	private java.io.Reader zzReader;
	/** the current state of the DFA */
	private int zzState;
	/** the current lexical state */
	private int zzLexicalState = YYINITIAL;
	/**
	 * this buffer contains the current text to be matched and is the source of the
	 * yytext() string
	 */
	private char zzBuffer[];
	/** the textposition at the last accepting state */
	private int zzMarkedPos;
	/** the current text position in the buffer */
	private int zzCurrentPos;
	/** startRead marks the beginning of the yytext() string in the buffer */
	private int zzStartRead;
	/**
	 * endRead marks the last character in the buffer, that has been read from input
	 */
	private int zzEndRead;
	/** zzAtEOF == true <=> the scanner is at the EOF */
	private boolean zzAtEOF;
	/* user code: */
	private Stack<Boolean> varDepths;

	/**
	 * Constructor. This must be here because JFlex does not generate a no-parameter
	 * constructor.
	 */
	public MakefileTokenMaker() {
	}

	/**
	 * Adds the token specified to the current linked list of tokens.
	 *
	 * @param tokenType The token's type.
	 */
	private void addToken(int tokenType) {
		addToken(zzStartRead, zzMarkedPos - 1, tokenType);
	}

	/**
	 * Adds the token specified to the current linked list of tokens.
	 *
	 * @param tokenType The token's type.
	 */
	private void addToken(int start, int end, int tokenType) {
		int so = start + offsetShift;
		addToken(zzBuffer, start, end, tokenType, so);
	}

	/**
	 * Adds the token specified to the current linked list of tokens.
	 *
	 * @param array       The character array.
	 * @param start       The starting offset in the array.
	 * @param end         The ending offset in the array.
	 * @param tokenType   The token's type.
	 * @param startOffset The offset in the document at which this token occurs.
	 */
	@Override
	public void addToken(char[] array, int start, int end, int tokenType, int startOffset) {
		super.addToken(array, start, end, tokenType, startOffset);
		zzStartRead = zzMarkedPos;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public String[] getLineCommentStartAndEnd(int languageIndex) {
		return new String[] { "#", null };
	}

	/**
	 * Returns whether tokens of the specified type should have "mark occurrences"
	 * enabled for the current programming language.
	 *
	 * @param type The token type.
	 * @return Whether tokens of this type should have "mark occurrences" enabled.
	 */
	@Override
	public boolean getMarkOccurrencesOfTokenType(int type) {
		return type == Token.IDENTIFIER || type == Token.VARIABLE;
	}

	/**
	 * Returns the first token in the linked list of tokens generated from
	 * <code>text</code>. This method must be implemented by subclasses so they can
	 * correctly implement syntax highlighting.
	 *
	 * @param text             The text from which to get tokens.
	 * @param initialTokenType The token type we should start with.
	 * @param startOffset      The offset into the document at which
	 *                         <code>text</code> starts.
	 * @return The first <code>Token</code> in a linked list representing the syntax
	 *         highlighted text.
	 */
	@Override
	public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
		resetTokenList();
		this.offsetShift = -text.offset + startOffset;
		s = text;
		try {
			yyreset(zzReader);
			yybegin(Token.NULL);
			return yylex();
		} catch (IOException ioe) {
			ioe.printStackTrace();
			return new TokenImpl();
		}
	}

	/**
	 * Refills the input buffer.
	 *
	 * @return <code>true</code> if EOF was reached, otherwise <code>false</code>.
	 */
	private boolean zzRefill() {
		return zzCurrentPos >= s.offset + s.count;
	}

	/**
	 * Resets the scanner to read from a new input stream. Does not close the old
	 * reader.
	 *
	 * All internal variables are reset, the old input stream <b>cannot</b> be
	 * reused (internal buffer is discarded and lost). Lexical state is set to
	 * <tt>YY_INITIAL</tt>.
	 *
	 * @param reader the new input stream
	 */
	public final void yyreset(Reader reader) {
		// 's' has been updated.
		zzBuffer = s.array;
		/*
		 * We replaced the line below with the two below it because zzRefill no longer
		 * "refills" the buffer (since the way we do it, it's always "full" the first
		 * time through, since it points to the segment's array). So, we assign
		 * zzEndRead here.
		 */
		// zzStartRead = zzEndRead = s.offset;
		zzStartRead = s.offset;
		zzEndRead = zzStartRead + s.count - 1;
		zzCurrentPos = zzMarkedPos = s.offset;
		zzLexicalState = YYINITIAL;
		zzReader = reader;
		zzAtEOF = false;
	}

	/**
	 * Creates a new scanner There is also a java.io.InputStream version of this
	 * constructor.
	 *
	 * @param in the java.io.Reader to read input from.
	 */
	public MakefileTokenMaker(java.io.Reader in) {
		this.zzReader = in;
	}

	/**
	 * Creates a new scanner. There is also java.io.Reader version of this
	 * constructor.
	 *
	 * @param in the java.io.Inputstream to read input from.
	 */
	public MakefileTokenMaker(java.io.InputStream in) {
		this(new java.io.InputStreamReader(in));
	}

	/**
	 * Unpacks the compressed character translation table.
	 *
	 * @param packed the packed character translation table
	 * @return the unpacked character translation table
	 */
	private static char[] zzUnpackCMap(String packed) {
		char[] map = new char[0x10000];
		int i = 0; /* index in packed string */
		int j = 0; /* index in unpacked array */
		while (i < 126) {
			int count = packed.charAt(i++);
			char value = packed.charAt(i++);
			do
				map[j++] = value;
			while (--count > 0);
		}
		return map;
	}

	/**
	 * Closes the input stream.
	 */
	public final void yyclose() throws java.io.IOException {
		zzAtEOF = true; /* indicate end of file */
		zzEndRead = zzStartRead; /* invalidate buffer */
		if (zzReader != null)
			zzReader.close();
	}

	/**
	 * Returns the current lexical state.
	 */
	public final int yystate() {
		return zzLexicalState;
	}

	/**
	 * Enters a new lexical state
	 *
	 * @param newState the new lexical state
	 */
	@Override
	public final void yybegin(int newState) {
		zzLexicalState = newState;
	}

	/**
	 * Returns the text matched by the current regular expression.
	 */
	public final String yytext() {
		return new String(zzBuffer, zzStartRead, zzMarkedPos - zzStartRead);
	}

	/**
	 * Returns the character at position <tt>pos</tt> from the matched text.
	 *
	 * It is equivalent to yytext().charAt(pos), but faster
	 *
	 * @param pos the position of the character to fetch. A value from 0 to
	 *            yylength()-1.
	 *
	 * @return the character at position pos
	 */
	public final char yycharat(int pos) {
		return zzBuffer[zzStartRead + pos];
	}

	/**
	 * Returns the length of the matched text region.
	 */
	public final int yylength() {
		return zzMarkedPos - zzStartRead;
	}

	/**
	 * Reports an error that occured while scanning.
	 *
	 * In a wellformed scanner (no or only correct usage of yypushback(int) and a
	 * match-all fallback rule) this method will only be called with things that
	 * "Can't Possibly Happen". If this method is called, something is seriously
	 * wrong (e.g. a JFlex bug producing a faulty scanner etc.).
	 *
	 * Usual syntax/scanner level error handling should be done in error fallback
	 * rules.
	 *
	 * @param errorCode the code of the errormessage to display
	 */
	private void zzScanError(int errorCode) {
		String message;
		try {
			message = ZZ_ERROR_MSG[errorCode];
		} catch (ArrayIndexOutOfBoundsException e) {
			message = ZZ_ERROR_MSG[ZZ_UNKNOWN_ERROR];
		}
		throw new Error(message);
	}

	/**
	 * Pushes the specified amount of characters back into the input stream.
	 *
	 * They will be read again by then next call of the scanning method
	 *
	 * @param number the number of characters to be read again. This number must not
	 *               be greater than yylength()!
	 */
	public void yypushback(int number) {
		if (number > yylength())
			zzScanError(ZZ_PUSHBACK_2BIG);
		zzMarkedPos -= number;
	}

	/**
	 * Resumes scanning until the next regular expression is matched, the end of
	 * input is encountered or an I/O-Error occurs.
	 *
	 * @return the next token
	 * @exception java.io.IOException if any I/O-Error occurs
	 */
	public org.fife.ui.rsyntaxtextarea.Token yylex() throws java.io.IOException {
		int zzInput;
		int zzAction;
		// cached fields:
		int zzCurrentPosL;
		int zzMarkedPosL;
		int zzEndReadL = zzEndRead;
		char[] zzBufferL = zzBuffer;
		char[] zzCMapL = ZZ_CMAP;
		int[] zzTransL = ZZ_TRANS;
		int[] zzRowMapL = ZZ_ROWMAP;
		int[] zzAttrL = ZZ_ATTRIBUTE;
		while (true) {
			zzMarkedPosL = zzMarkedPos;
			zzAction = -1;
			zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL;
			zzState = zzLexicalState;
			zzForAction: {
				while (true) {
					if (zzCurrentPosL < zzEndReadL)
						zzInput = zzBufferL[zzCurrentPosL++];
					else if (zzAtEOF) {
						zzInput = YYEOF;
						break zzForAction;
					} else {
						// store back cached positions
						zzCurrentPos = zzCurrentPosL;
						zzMarkedPos = zzMarkedPosL;
						boolean eof = zzRefill();
						// get translated positions and possibly new buffer
						zzCurrentPosL = zzCurrentPos;
						zzMarkedPosL = zzMarkedPos;
						zzBufferL = zzBuffer;
						zzEndReadL = zzEndRead;
						if (eof) {
							zzInput = YYEOF;
							break zzForAction;
						} else {
							zzInput = zzBufferL[zzCurrentPosL++];
						}
					}
					int zzNext = zzTransL[zzRowMapL[zzState] + zzCMapL[zzInput]];
					if (zzNext == -1)
						break zzForAction;
					zzState = zzNext;
					int zzAttributes = zzAttrL[zzState];
					if ((zzAttributes & 1) == 1) {
						zzAction = zzState;
						zzMarkedPosL = zzCurrentPosL;
						if ((zzAttributes & 8) == 8)
							break zzForAction;
					}
				}
			}
			// store back cached position
			zzMarkedPos = zzMarkedPosL;
			switch (zzAction < 0 ? zzAction : ZZ_ACTION[zzAction]) {
			case 13: {
				addToken(Token.PREPROCESSOR);
			}
			case 22:
				break;
			case 15: {
				if (varDepths == null) {
					varDepths = new Stack<Boolean>();
				} else {
					varDepths.clear();
				}
				varDepths.push(Boolean.FALSE);
				start = zzMarkedPos - 2;
				yybegin(VAR);
			}
			case 23:
				break;
			case 3: {
				addNullToken();
				return firstToken;
			}
			case 24:
				break;
			case 16: {
				addToken(Token.LITERAL_CHAR);
			}
			case 25:
				break;
			case 12: {
				if (!varDepths.empty() && varDepths.peek() == Boolean.TRUE) {
					varDepths.pop();
					if (varDepths.empty()) {
						addToken(start, zzStartRead, Token.VARIABLE);
						yybegin(YYINITIAL);
					}
				}
			}
			case 26:
				break;
			case 11: {
				if (!varDepths.empty() && varDepths.peek() == Boolean.FALSE) {
					varDepths.pop();
					if (varDepths.empty()) {
						addToken(start, zzStartRead, Token.VARIABLE);
						yybegin(YYINITIAL);
					}
				}
			}
			case 27:
				break;
			case 4: {
				addToken(Token.WHITESPACE);
			}
			case 28:
				break;
			case 21: {
				addToken(Token.RESERVED_WORD);
			}
			case 29:
				break;
			case 20: {
				varDepths.push(Boolean.FALSE);
			}
			case 30:
				break;
			case 18: {
				addToken(Token.LITERAL_BACKQUOTE);
			}
			case 31:
				break;
			case 19: {
				varDepths.push(Boolean.TRUE);
			}
			case 32:
				break;
			case 1: {
				addToken(Token.IDENTIFIER);
			}
			case 33:
				break;
			case 14: {
				if (varDepths == null) {
					varDepths = new Stack<Boolean>();
				} else {
					varDepths.clear();
				}
				varDepths.push(Boolean.TRUE);
				start = zzMarkedPos - 2;
				yybegin(VAR);
			}
			case 34:
				break;
			case 5: {
				addToken(Token.ERROR_CHAR);
				addNullToken();
				return firstToken;
			}
			case 35:
				break;
			case 6: {
				addToken(Token.ERROR_STRING_DOUBLE);
				addNullToken();
				return firstToken;
			}
			case 36:
				break;
			case 10: {
				int temp1 = zzStartRead;
				int temp2 = zzMarkedPos;
				addToken(start, zzStartRead - 1, Token.VARIABLE);
				addToken(temp1, temp2 - 1, Token.COMMENT_EOL);
				addNullToken();
				return firstToken;
			}
			case 37:
				break;
			case 17: {
				addToken(Token.LITERAL_STRING_DOUBLE_QUOTE);
			}
			case 38:
				break;
			case 7: {
				addToken(Token.COMMENT_EOL);
				addNullToken();
				return firstToken;
			}
			case 39:
				break;
			case 2: {
				addToken(Token.LITERAL_NUMBER_DECIMAL_INT);
			}
			case 40:
				break;
			case 8: {
				addToken(Token.OPERATOR);
			}
			case 41:
				break;
			case 9: {
			}
			case 42:
				break;
			default:
				if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
					zzAtEOF = true;
					switch (zzLexicalState) {
					case VAR: {
						addToken(start, zzStartRead - 1, Token.VARIABLE);
						addNullToken();
						return firstToken;
					}
					case 130:
						break;
					case YYINITIAL: {
						addNullToken();
						return firstToken;
					}
					case 131:
						break;
					default:
						return null;
					}
				} else {
					zzScanError(ZZ_NO_MATCH);
				}
			}
		}
	}
}