org.fife.ui.rsyntaxtextarea.modes.BBCodeTokenMaker Maven / Gradle / Ivy
/* The following code was generated by JFlex 1.4.1 on 11/18/09 4:41 PM */
/*
* 11/18/2009
*
* BBCodeTokenMaker.java - Generates tokens for BBCode syntax highlighting.
*
* This library is distributed under a modified BSD license. See the included
* LICENSE file for details.
*/
package org.fife.ui.rsyntaxtextarea.modes;
import java.io.*;
import javax.swing.text.Segment;
import org.fife.ui.rsyntaxtextarea.*;
/**
* Scanner for BBCode.
*
* 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:
*
* - The generated
BBCodeTokenMaker.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.
* - 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.
* - You should NOT call
yylex() on the generated scanner
* directly; rather, you should use getTokenList as you would
* with any other TokenMaker instance.
*
*
* @author Robert Futrell
* @version 0.7
*
*/
public class BBCodeTokenMaker extends AbstractMarkupTokenMaker {
/** This character denotes the end of file */
public static final int YYEOF = -1;
/** lexical states */
public static final int INTAG = 1;
public static final int YYINITIAL = 0;
/**
* Translates characters to character classes
*/
private static final String ZZ_CMAP_PACKED =
"\11\0\1\1\1\2\1\0\1\1\23\0\1\1\16\0\1\27\15\0"+
"\1\30\35\0\1\3\1\0\1\4\4\0\1\5\1\13\1\26\1\12"+
"\1\0\1\23\1\0\1\6\2\0\1\15\1\22\1\17\1\14\1\0"+
"\1\21\1\16\1\10\1\20\1\7\1\25\2\0\1\24\1\11\uff85\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\1\1\1\2\1\3\1\4\1\5\1\6\1\7"+
"\4\10\6\5\1\11\1\12\1\4\23\5";
private static int [] zzUnpackAction() {
int [] result = new int[41];
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\31\0\62\0\113\0\144\0\175\0\226\0\144"+
"\0\144\0\226\0\257\0\310\0\341\0\372\0\u0113\0\u012c"+
"\0\u0145\0\u015e\0\u0177\0\u0190\0\144\0\144\0\u01a9\0\u01c2"+
"\0\u01db\0\u01f4\0\u020d\0\u0226\0\u023f\0\u0258\0\u0271\0\u028a"+
"\0\u02a3\0\u02bc\0\u02d5\0\u02ee\0\u0307\0\u0320\0\u0339\0\u0352"+
"\0\u036b";
private static int [] zzUnpackRowMap() {
int [] result = new int[41];
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\25\3\1\7\1\4\1\0"+
"\1\10\1\11\1\12\1\13\1\14\1\15\2\7\1\16"+
"\1\17\1\20\3\7\1\21\1\7\1\22\1\23\2\7"+
"\1\24\1\25\1\3\3\0\25\3\1\0\1\4\107\0"+
"\1\26\1\0\1\7\4\0\22\7\2\0\1\7\4\0"+
"\15\7\1\27\4\7\2\0\1\7\4\0\10\7\1\12"+
"\1\17\10\7\2\0\1\7\4\0\1\7\1\30\20\7"+
"\2\0\1\7\4\0\5\7\1\31\1\7\1\32\12\7"+
"\2\0\1\7\4\0\10\7\1\12\11\7\2\0\1\7"+
"\4\0\1\7\1\12\20\7\2\0\1\7\4\0\2\7"+
"\1\33\17\7\2\0\1\7\4\0\20\7\1\34\1\7"+
"\2\0\1\7\4\0\7\7\1\35\12\7\6\0\1\11"+
"\24\0\1\7\4\0\16\7\1\12\3\7\2\0\1\7"+
"\4\0\4\7\1\36\15\7\2\0\1\7\4\0\12\7"+
"\1\37\7\7\2\0\1\7\4\0\10\7\1\40\11\7"+
"\2\0\1\7\4\0\7\7\1\41\12\7\2\0\1\7"+
"\4\0\1\7\1\42\20\7\2\0\1\7\4\0\2\7"+
"\1\43\17\7\2\0\1\7\4\0\5\7\1\12\14\7"+
"\2\0\1\7\4\0\13\7\1\44\6\7\2\0\1\7"+
"\4\0\7\7\1\45\12\7\2\0\1\7\4\0\13\7"+
"\1\36\6\7\2\0\1\7\4\0\21\7\1\46\2\0"+
"\1\7\4\0\13\7\1\47\6\7\2\0\1\7\4\0"+
"\5\7\1\45\14\7\2\0\1\7\4\0\11\7\1\12"+
"\10\7\2\0\1\7\4\0\5\7\1\50\14\7\2\0"+
"\1\7\4\0\2\7\1\51\17\7\2\0\1\7\4\0"+
"\7\7\1\12\12\7\2\0\1\7\4\0\1\36\21\7"+
"\2\0";
private static int [] zzUnpackTrans() {
int [] result = new int[900];
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 aState
*/
private static final int [] ZZ_ATTRIBUTE = zzUnpackAttribute();
private static final String ZZ_ATTRIBUTE_PACKED_0 =
"\2\0\2\1\1\11\2\1\2\11\13\1\2\11\23\1";
private static int [] zzUnpackAttribute() {
int [] result = new int[41];
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: */
/**
* Token type specific to BBCodeTokenMaker; this signals that the user has
* ended a line with an unclosed tag; thus a new line is beginning
* still inside of the tag.
*/
public static final int INTERNAL_INTAG = -1;
/**
* Whether closing markup tags are automatically completed for BBCode.
*/
private static boolean completeCloseTags = true;
/**
* Constructor. This must be here because JFlex does not generate a
* no-parameter constructor.
*/
public BBCodeTokenMaker() {
}
/**
* 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;
}
/**
* Sets whether markup close tags should be completed. The default value
* for BBCode is true.
*
* @return Whether closing markup tags are completed.
* @see #setCompleteCloseTags(boolean)
*/
@Override
public boolean getCompleteCloseTags() {
return completeCloseTags;
}
/**
* Returns null since BBCode has no comments.
*
* @return null always.
*/
@Override
public String[] getLineCommentStartAndEnd(int languageIndex) {
return 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;
switch (initialTokenType) {
case INTERNAL_INTAG:
state = INTAG;
start = text.offset;
break;
default:
state = Token.NULL;
}
s = text;
try {
yyreset(zzReader);
yybegin(state);
return yylex();
} catch (IOException ioe) {
ioe.printStackTrace();
return new TokenImpl();
}
}
/**
* Sets whether markup close tags should be completed.
*
* @param complete Whether closing markup tags are completed.
* @see #getCompleteCloseTags()
*/
public static void setCompleteCloseTags(boolean complete) {
completeCloseTags = complete;
}
/**
* Refills the input buffer.
*
* @return true if EOF was reached, otherwise
* false.
*/
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 BBCodeTokenMaker(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 BBCodeTokenMaker(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 < 80) {
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 11: break;
case 9:
{ addToken(Token.MARKUP_TAG_DELIMITER);
}
case 12: break;
case 2:
{ addToken(Token.WHITESPACE);
}
case 13: break;
case 10:
{ addToken(Token.OPERATOR);
}
case 14: break;
case 8:
{ addToken(Token.MARKUP_TAG_NAME);
}
case 15: break;
case 4:
{ addToken(Token.MARKUP_TAG_DELIMITER); yybegin(INTAG);
}
case 16: break;
case 6:
{ addToken(Token.IDENTIFIER); /* Unhandled chars, not likely */
}
case 17: break;
case 5:
{ addToken(Token.MARKUP_TAG_ATTRIBUTE);
}
case 18: break;
case 3:
{ addNullToken(); return firstToken;
}
case 19: break;
case 7:
{ yybegin(YYINITIAL); addToken(Token.MARKUP_TAG_DELIMITER);
}
case 20: break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
switch (zzLexicalState) {
case INTAG: {
addToken(zzMarkedPos,zzMarkedPos, INTERNAL_INTAG); return firstToken;
}
case 42: break;
case YYINITIAL: {
addNullToken(); return firstToken;
}
case 43: break;
default:
return null;
}
}
else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
}