*
* This implementation was created using
* JFlex 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
* AbstractTokenMaker, 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 RSTA 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.
*
* * The actual algorithm generated for scanning has, of course, not been * modified. *
* * If you wish to regenerate this file yourself, keep in mind the following: *
LatexTokenMaker.java file will contain two
* definitions of both zzRefill and yyreset. 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.yylex() on the generated scanner
* directly; rather, you should use getTokenList as you would with
* any other TokenMaker instance.aState
*/
private static final int[] ZZ_ATTRIBUTE = zzUnpackAttribute();
private static final String ZZ_ATTRIBUTE_PACKED_0 = "\2\0\1\11\1\1\2\11\1\1\2\11\4\1\1\11"
+ "\1\1\1\11\2\1\4\0\2\1\4\0\2\1\2\0" + "\1\1\1\0\1\1\3\0\1\1\1\11\2\0\1\11";
private static int[] zzUnpackAttribute() {
int[] result = new int[43];
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: */
/**
* Constructor. This must be here because JFlex does not generate a no-parameter
* constructor.
*/
public LatexTokenMaker() {
}
/**
* Adds the token specified to the current linked list of tokens.
*
* @param tokenType The token's type.
* @see #addToken(int, int, int)
*/
private void addHyperlinkToken(int start, int end, int tokenType) {
int so = start + offsetShift;
addToken(zzBuffer, start, end, tokenType, so, true);
}
/**
* 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.
* @see #addHyperlinkToken(int, int, int)
*/
private void addToken(int start, int end, int tokenType) {
int so = start + offsetShift;
addToken(zzBuffer, start, end, tokenType, so, false);
}
/**
* 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.
* @param hyperlink Whether this token is a hyperlink.
*/
@Override
public void addToken(char[] array, int start, int end, int tokenType, int startOffset, boolean hyperlink) {
super.addToken(array, start, end, tokenType, startOffset, hyperlink);
zzStartRead = zzMarkedPos;
}
/**
* ${inheritDoc}
*/
@Override
public String[] getLineCommentStartAndEnd(int languageIndex) {
return new String[] { "%", null };
}
/**
* Returns the first token in the linked list of tokens generated from
* text. 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
* text starts.
* @return The first Token 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;
// Start off in the proper state.
int state = Token.NULL;
s = text;
try {
yyreset(zzReader);
yybegin(state);
return yylex();
} catch (IOException ioe) {
ioe.printStackTrace();
return new TokenImpl();
}
}
/**
* Refills the input buffer.
*
* @return true if EOF was reached, otherwise false.
* @exception IOException if any I/O-Error occurs.
*/
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 cannot be
* reused (internal buffer is discarded and lost). Lexical state is set to
* YY_INITIAL.
*
* @param reader the new input stream
*/
public final void yyreset(java.io.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 LatexTokenMaker(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 LatexTokenMaker(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 < 112) {
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 pos 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 1: {
addToken(Token.IDENTIFIER);
}
case 13:
break;
case 8: {
addToken(Token.FUNCTION);
}
case 14:
break;
case 2: {
addToken(Token.WHITESPACE);
}
case 15:
break;
case 12: {
int temp = zzStartRead;
addToken(temp, temp + 5, Token.RESERVED_WORD);
addToken(temp + 6, temp + 6, Token.SEPARATOR);
addToken(temp + 7, zzMarkedPos - 2, Token.RESERVED_WORD);
addToken(zzMarkedPos - 1, zzMarkedPos - 1, Token.SEPARATOR);
}
case 16:
break;
case 10: {
int temp = zzStartRead;
addToken(start, zzStartRead - 1, Token.COMMENT_EOL);
addHyperlinkToken(temp, zzMarkedPos - 1, Token.COMMENT_EOL);
start = zzMarkedPos;
}
case 17:
break;
case 3: {
start = zzMarkedPos - 1;
yybegin(EOL_COMMENT);
}
case 18:
break;
case 11: {
int temp = zzStartRead;
addToken(temp, temp + 3, Token.RESERVED_WORD);
addToken(temp + 4, temp + 4, Token.SEPARATOR);
addToken(temp + 5, zzMarkedPos - 2, Token.RESERVED_WORD);
addToken(zzMarkedPos - 1, zzMarkedPos - 1, Token.SEPARATOR);
}
case 19:
break;
case 5: {
addNullToken();
return firstToken;
}
case 20:
break;
case 7: {
addToken(start, zzStartRead - 1, Token.COMMENT_EOL);
addNullToken();
return firstToken;
}
case 21:
break;
case 9: {
int temp = zzStartRead;
addToken(temp, temp, Token.SEPARATOR);
addToken(temp + 1, temp + 1, Token.IDENTIFIER);
}
case 22:
break;
case 6: {
}
case 23:
break;
case 4: {
addToken(Token.SEPARATOR);
}
case 24:
break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
switch (zzLexicalState) {
case EOL_COMMENT: {
addToken(start, zzStartRead - 1, Token.COMMENT_EOL);
addNullToken();
return firstToken;
}
case 44:
break;
case YYINITIAL: {
addNullToken();
return firstToken;
}
case 45:
break;
default:
return null;
}
} else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
}