* Copyright (C) 2009 Sumit Dubey Licensed as per LGPLv3, or any other license
* at the discretion of Robert Futrell. 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 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.
*
* 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: *
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 =
"\4\0\1\11\1\1\1\11\3\1\1\11\1\1\1\11"
+ "\11\1\1\11\12\1\1\11\2\1\2\11\1\1\2\11" + "\31\1\1\11\1\1\1\0\50\1";
private static int[] zzUnpackAttribute() {
final int[] result = new int[109];
int offset = 0;
offset = zzUnpackAttribute(ZZ_ATTRIBUTE_PACKED_0, offset, result);
return result;
}
private static int zzUnpackAttribute(final String packed, final int offset,
final int[] result)
{
int i = 0; /* index in packed string */
int j = offset; /* index in unpacked array */
final int l = packed.length();
while (i < l) {
int count = packed.charAt(i++);
final 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[] = new char[ZZ_BUFFERSIZE];
/** 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;
/** number of newlines encountered up to the start of the matched text */
private int yyline;
/** the number of characters up to the start of the matched text */
private int yychar;
/**
* the number of characters from the last newline up to the start of the
* matched text
*/
private int yycolumn;
/**
* zzAtBOL == true <=> the scanner is currently at the beginning of a line
*/
private boolean zzAtBOL = true;
/** zzAtEOF == true <=> the scanner is at the EOF */
private boolean zzAtEOF;
/** denotes if the user-EOF-code has already been executed */
private boolean zzEOFDone;
/* user code: */
/**
* Constructor. This must be here because JFlex does not generate a
* no-parameter constructor.
*/
public MatlabTokenMaker() {}
/**
* 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(final int start, final int end,
final int tokenType)
{
final 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(final 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(final int start, final int end, final int tokenType) {
final 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(final char[] array, final int start, final int end,
final int tokenType, final int startOffset, final boolean hyperlink)
{
super.addToken(array, start, end, tokenType, startOffset, hyperlink);
zzStartRead = zzMarkedPos;
}
/**
* 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(final Segment text, final int initialTokenType,
final int startOffset)
{
resetTokenList();
this.offsetShift = -text.offset + startOffset;
// Start off in the proper state.
int state = TokenTypes.NULL;
switch (initialTokenType) {
case TokenTypes.COMMENT_MULTILINE:
state = MLC;
start = text.offset;
break;
/*case Token.COMMENT_DOCUMENTATION:
state = DOCCOMMENT;
start = text.offset;
break;*/
case TokenTypes.LITERAL_STRING_DOUBLE_QUOTE:
state = STRING;
start = text.offset;
break;
default:
state = TokenTypes.NULL;
}
s = text;
try {
yyreset(zzReader);
yybegin(state);
return yylex();
}
catch (final 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() throws java.io.IOException {
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(final java.io.Reader reader)
throws java.io.IOException
{
// '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;
zzAtBOL = true;
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 MatlabTokenMaker(final 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 MatlabTokenMaker(final 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(final String packed) {
final char[] map = new char[0x10000];
int i = 0; /* index in packed string */
int j = 0; /* index in unpacked array */
while (i < 156) {
int count = packed.charAt(i++);
final char value = packed.charAt(i++);
do
map[j++] = value;
while (--count > 0);
}
return map;
}
/**
* Refills the input buffer.
*
* @return false, iff there was new input.
* @exception java.io.IOException if any I/O-Error occurs
*/
/**
* 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(final 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(final 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(final int errorCode) {
String message;
try {
message = ZZ_ERROR_MSG[errorCode];
}
catch (final 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(final 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;
final char[] zzCMapL = ZZ_CMAP;
final int[] zzTransL = ZZ_TRANS;
final int[] zzRowMapL = ZZ_ROWMAP;
final int[] zzAttrL = ZZ_ATTRIBUTE;
while (true) {
zzMarkedPosL = zzMarkedPos;
zzAction = -1;
zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL;
zzState = ZZ_LEXSTATE[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;
final boolean eof = zzRefill();
// get translated positions and possibly new buffer
zzCurrentPosL = zzCurrentPos;
zzMarkedPosL = zzMarkedPos;
zzBufferL = zzBuffer;
zzEndReadL = zzEndRead;
if (eof) {
zzInput = YYEOF;
break zzForAction;
}
zzInput = zzBufferL[zzCurrentPosL++];
}
final int zzNext = zzTransL[zzRowMapL[zzState] + zzCMapL[zzInput]];
if (zzNext == -1) break zzForAction;
zzState = zzNext;
final 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 7: {
addNullToken();
return firstToken;
}
case 22:
break;
case 20: {
yybegin(YYINITIAL);
addToken(start, zzStartRead + 1, TokenTypes.COMMENT_MULTILINE);
}
case 23:
break;
case 15: {
start = zzMarkedPos - 2;
yybegin(MLC);
}
case 24:
break;
case 9: {
addToken(TokenTypes.WHITESPACE);
}
case 25:
break;
case 18: {
addToken(TokenTypes.LITERAL_NUMBER_HEXADECIMAL);
}
case 26:
break;
case 17: {
addToken(TokenTypes.LITERAL_NUMBER_FLOAT);
}
case 27:
break;
case 19: {
addToken(TokenTypes.RESERVED_WORD);
}
case 28:
break;
case 3: {
addToken(TokenTypes.SEPARATOR);
}
case 29:
break;
case 5: {
addToken(TokenTypes.IDENTIFIER);
}
case 30:
break;
case 14: {
addToken(start, zzStartRead - 1, TokenTypes.COMMENT_EOL);
addNullToken();
return firstToken;
}
case 31:
break;
case 1: {
addToken(TokenTypes.ERROR_IDENTIFIER);
}
case 32:
break;
case 21: {
addToken(TokenTypes.LITERAL_BOOLEAN);
}
case 33:
break;
case 12: {
addToken(start, zzStartRead - 1,
TokenTypes.LITERAL_STRING_DOUBLE_QUOTE);
return firstToken;
}
case 34:
break;
case 16: {
addToken(TokenTypes.ERROR_NUMBER_FORMAT);
}
case 35:
break;
case 6: {
start = zzMarkedPos - 1;
yybegin(STRING);
}
case 36:
break;
case 2: {
start = zzMarkedPos - 1;
yybegin(EOL_COMMENT);
}
case 37:
break;
case 4: {
addToken(TokenTypes.LITERAL_NUMBER_DECIMAL_INT);
}
case 38:
break;
case 8: {
addToken(TokenTypes.OPERATOR);
}
case 39:
break;
case 11: {
yybegin(YYINITIAL);
addToken(start, zzStartRead, TokenTypes.LITERAL_STRING_DOUBLE_QUOTE);
}
case 40:
break;
case 10: {}
case 41:
break;
case 13: {
addToken(start, zzStartRead - 1, TokenTypes.COMMENT_MULTILINE);
return firstToken;
}
case 42:
break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
switch (zzLexicalState) {
case EOL_COMMENT: {
addToken(start, zzStartRead - 1, TokenTypes.COMMENT_EOL);
addNullToken();
return firstToken;
}
case 110:
break;
case STRING: {
addToken(start, zzStartRead - 1,
TokenTypes.LITERAL_STRING_DOUBLE_QUOTE);
return firstToken;
}
case 111:
break;
case YYINITIAL: {
addNullToken();
return firstToken;
}
case 112:
break;
case MLC: {
addToken(start, zzStartRead - 1, TokenTypes.COMMENT_MULTILINE);
return firstToken;
}
case 113:
break;
default:
return null;
}
}
else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
}