org.fife.ui.rsyntaxtextarea.modes.CSSTokenMaker Maven / Gradle / Ivy
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/* The following code was generated by JFlex 1.4.1 on 12/23/13 10:07 PM */ /* * 09/03/2005 * * CSSTokenMaker.java - Token maker for CSS 3 files. * * 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.*; import javax.swing.text.Segment; import org.fife.ui.rsyntaxtextarea.*; /** * This class splits up text into tokens representing a CSS 3 file. It's * written with a few extra internal states so that it can easily be copy * and pasted into HTML, PHP, and JSP TokenMakres when it is updated.file will contain 2 * definitions of both* * 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 CSSTokenMaker.java
zzRefillandyyreset. * 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\1\3\0\1\11\4\1\1\11\2\1\7\11"+
"\2\1\1\11\1\1\4\11\4\1\1\11\1\1\2\11"+
"\1\1\1\11\2\1\2\11\1\1\2\11\5\1\1\11"+
"\15\0\2\1\1\11\2\0\1\11\3\0\1\1\1\0"+
"\2\11\41\0\1\11\17\0\1\1\47\0\1\11";
private static int [] zzUnpackAttribute() {
int [] result = new int[168];
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: */
/**
* Internal type denoting a line ending in a CSS property.
*/
public static final int INTERNAL_CSS_PROPERTY = -1;
/**
* Internal type denoting a line ending in a CSS property value.
*/
public static final int INTERNAL_CSS_VALUE = -2;
/**
* Internal type denoting line ending in a CSS double-quote string.
* The state to return to is embedded in the actual end token type.
*/
public static final int INTERNAL_CSS_STRING = -(1<<11);
/**
* Internal type denoting line ending in a CSS single-quote string.
* The state to return to is embedded in the actual end token type.
*/
public static final int INTERNAL_CSS_CHAR = -(2<<11);
/**
* Internal type denoting line ending in a CSS multi-line comment.
* The state to return to is embedded in the actual end token type.
*/
public static final int INTERNAL_CSS_MLC = -(3<<11);
/**
* The state previous CSS-related state we were in before going into a CSS
* string, multi-line comment, etc.
*/
private int cssPrevState;
/**
* Constructor. This must be here because JFlex does not generate a
* no-parameter constructor.
*/
public CSSTokenMaker() {
super();
}
/**
* Adds the token specified to the current linked list of tokens as an
* "end token;" that is, at zzMarkedPos.
*
* @param tokenType The token's type.
*/
private void addEndToken(int tokenType) {
addToken(zzMarkedPos,zzMarkedPos, tokenType);
}
/**
* 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.
*/
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;
}
/**
* Returns the closest {@link TokenTypes "standard" token type} for a given
* "internal" token type (e.g. one whose value is < 0).
*/
@Override
public int getClosestStandardTokenTypeForInternalType(int type) {
switch (type) {
case INTERNAL_CSS_STRING:
case INTERNAL_CSS_CHAR:
return TokenTypes.LITERAL_STRING_DOUBLE_QUOTE;
case INTERNAL_CSS_MLC:
return TokenTypes.COMMENT_MULTILINE;
}
return type;
}
/**
* Returns true since CSS uses curly braces.
*
* @return true always.
*/
public boolean getCurlyBracesDenoteCodeBlocks() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public boolean getMarkOccurrencesOfTokenType(int type) {
return type==Token.RESERVED_WORD; // Used for CSS keys
}
/**
* {@inheritDoc}
*/
@Override
public boolean getShouldIndentNextLineAfter(Token t) {
if (t!=null && t.length()==1) {
char ch = t.charAt(0);
return ch=='{' || ch=='(';
}
return false;
}
/**
* 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.
*/
public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
resetTokenList();
this.offsetShift = -text.offset + startOffset;
cssPrevState = YYINITIAL; // Shouldn't be necessary
// Start off in the proper state.
int state = Token.NULL;
switch (initialTokenType) {
case Token.LITERAL_STRING_DOUBLE_QUOTE:
state = CSS_STRING;
break;
case Token.LITERAL_CHAR:
state = CSS_CHAR_LITERAL;
break;
case Token.COMMENT_MULTILINE:
state = CSS_C_STYLE_COMMENT;
break;
case INTERNAL_CSS_PROPERTY:
state = CSS_PROPERTY;
break;
case INTERNAL_CSS_VALUE:
state = CSS_VALUE;
break;
default:
if (initialTokenType<-1024) {
int main = -(-initialTokenType & 0xffffff00);
switch (main) {
default: // Should never happen
case INTERNAL_CSS_STRING:
state = CSS_STRING;
break;
case INTERNAL_CSS_CHAR:
state = CSS_CHAR_LITERAL;
break;
case INTERNAL_CSS_MLC:
state = CSS_C_STYLE_COMMENT;
break;
}
cssPrevState = -initialTokenType&0xff;
}
else {
state = Token.NULL;
}
}
start = text.offset;
s = text;
try {
yyreset(zzReader);
yybegin(state);
return yylex();
} catch (IOException ioe) {
ioe.printStackTrace();
return new TokenImpl();
}
}
/**
* Overridden to accept letters, digits, underscores, and hyphens.
*/
@Override
public boolean isIdentifierChar(int languageIndex, char ch) {
return Character.isLetterOrDigit(ch) || ch=='-' || ch=='.' || ch=='_';
}
/**
* 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 CSSTokenMaker(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 CSSTokenMaker(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 < 134) {
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 37: break;
case 2:
{ /*System.out.println("yyinitial: " + yytext());*/ addToken(Token.IDENTIFIER);
}
case 38: break;
case 22:
{ addEndToken(INTERNAL_CSS_VALUE); return firstToken;
}
case 39: break;
case 36:
{ addToken(Token.ANNOTATION);
}
case 40: break;
case 32:
{ addToken(Token.VARIABLE);
}
case 41: break;
case 8:
{ addToken(Token.SEPARATOR); yybegin(CSS_PROPERTY);
}
case 42: break;
case 26:
{ addToken(start,zzStartRead, Token.LITERAL_STRING_DOUBLE_QUOTE); yybegin(cssPrevState);
}
case 43: break;
case 29:
{ addToken(start,zzStartRead-1, Token.LITERAL_CHAR); addEndToken(INTERNAL_CSS_CHAR - cssPrevState); return firstToken;
}
case 44: break;
case 33:
{ start = zzMarkedPos-2; cssPrevState = zzLexicalState; yybegin(CSS_C_STYLE_COMMENT);
}
case 45: break;
case 28:
{ addToken(start,zzStartRead, Token.LITERAL_CHAR); yybegin(cssPrevState);
}
case 46: break;
case 34:
{ addToken(start,zzStartRead+1, Token.COMMENT_MULTILINE); yybegin(cssPrevState);
}
case 47: break;
case 9:
{ start = zzMarkedPos-1; cssPrevState = zzLexicalState; yybegin(CSS_STRING);
}
case 48: break;
case 14:
{ addToken(Token.OPERATOR); yybegin(CSS_VALUE);
}
case 49: break;
case 4:
{ /* Unknown pseudo class */ addToken(Token.DATA_TYPE);
}
case 50: break;
case 20:
{ addToken(Token.OPERATOR); yybegin(CSS_PROPERTY);
}
case 51: break;
case 25:
{ /* Skip escaped chars. */
}
case 52: break;
case 31:
{ addToken(Token.REGEX);
}
case 53: break;
case 16:
{ addEndToken(INTERNAL_CSS_PROPERTY); return firstToken;
}
case 54: break;
case 21:
{ int temp = zzMarkedPos - 2;
addToken(zzStartRead, temp, Token.FUNCTION);
addToken(zzMarkedPos-1, zzMarkedPos-1, Token.SEPARATOR);
zzStartRead = zzCurrentPos = zzMarkedPos;
}
case 55: break;
case 6:
{ addToken(Token.WHITESPACE);
}
case 56: break;
case 17:
{ addToken(Token.SEPARATOR); yybegin(YYINITIAL);
}
case 57: break;
case 3:
{ addToken(Token.DATA_TYPE);
}
case 58: break;
case 15:
{ addToken(Token.SEPARATOR); /* helps with auto-closing curlies when editing CSS */
}
case 59: break;
case 19:
{ addToken(Token.LITERAL_NUMBER_DECIMAL_INT);
}
case 60: break;
case 27:
{ addToken(start,zzStartRead-1, Token.LITERAL_STRING_DOUBLE_QUOTE); addEndToken(INTERNAL_CSS_STRING - cssPrevState); return firstToken;
}
case 61: break;
case 30:
{ addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addEndToken(INTERNAL_CSS_MLC - cssPrevState); return firstToken;
}
case 62: break;
case 23:
{ /* End of a function */ addToken(Token.SEPARATOR);
}
case 63: break;
case 12:
{ /*System.out.println("css_property: " + yytext());*/ addToken(Token.IDENTIFIER);
}
case 64: break;
case 13:
{ addToken(Token.RESERVED_WORD);
}
case 65: break;
case 35:
{ int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_MULTILINE); start = zzMarkedPos;
}
case 66: break;
case 10:
{ start = zzMarkedPos-1; cssPrevState = zzLexicalState; yybegin(CSS_CHAR_LITERAL);
}
case 67: break;
case 5:
{ addToken(Token.SEPARATOR);
}
case 68: break;
case 11:
{ addNullToken(); return firstToken;
}
case 69: break;
case 7:
{ addToken(Token.OPERATOR);
}
case 70: break;
case 18:
{ /*System.out.println("css_value: " + yytext());*/ addToken(Token.IDENTIFIER);
}
case 71: break;
case 24:
{
}
case 72: break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
switch (zzLexicalState) {
case CSS_C_STYLE_COMMENT: {
addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addEndToken(INTERNAL_CSS_MLC - cssPrevState); return firstToken;
}
case 169: break;
case YYINITIAL: {
addNullToken(); return firstToken;
}
case 170: break;
case CSS_STRING: {
addToken(start,zzStartRead-1, Token.LITERAL_STRING_DOUBLE_QUOTE); addEndToken(INTERNAL_CSS_STRING - cssPrevState); return firstToken;
}
case 171: break;
case CSS_VALUE: {
addEndToken(INTERNAL_CSS_VALUE); return firstToken;
}
case 172: break;
case CSS_PROPERTY: {
addEndToken(INTERNAL_CSS_PROPERTY); return firstToken;
}
case 173: break;
case CSS_CHAR_LITERAL: {
addToken(start,zzStartRead-1, Token.LITERAL_CHAR); addEndToken(INTERNAL_CSS_CHAR - cssPrevState); return firstToken;
}
case 174: break;
default:
return null;
}
}
else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
}