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oracle.javatools.parser.css
Class CSSLexer

java.lang.Object
oracle.javatools.parser.AbstractLexer
oracle.javatools.parser.css.CSSLexer

All Implemented Interfaces:

CSSTokens, LexicalUnits, Lexer

Direct Known Subclasses:

CSSAtRuleLexer, CSSDeclarationsLexer, CSSFontFaceRuleLexer, CSSImportRuleLexer, CSSMediaRuleLexer, CSSNamespaceRuleLexer, CSSPageRuleLexer, CSSPseudoRuleSetLexer, CSSRuleSetLexer

public class CSSLexer

extends AbstractLexer

implements CSSTokens

Code Editor lexer for CSS documents.

Nested Class Summary

Nested classes/interfaces inherited from class oracle.javatools.parser.AbstractLexer

AbstractLexer.DefaultLexerToken

Field Summary

protected int	_mEndOffset The ending offset of the last token found.
protected int	_mLastToken The last token found from lex() operation.
protected LineMap	_mLineMap
protected oracle.javatools.parser.css.CSSLexer.TextBufferReader	_mReader
protected int	_mStartOffset The starting offset of the last token found.
protected Tokenizer	_mTokenizer Tokenizer used to get lexical tokens.
protected boolean	_mUseLastToken Whether to use the last token that was found.

Fields inherited from class oracle.javatools.parser.AbstractLexer

currentPos, textBuffer

Fields inherited from interface oracle.javatools.parser.css.CSSTokens

TK_CSS_BLOCK, TK_CSS_RULE_SET

Fields inherited from interface oracle.javatools.parser.css.LexicalUnits

ANY, AT_KEYWORD, BEGINS, CARET, CDC, CDO, CHARSET_SYMBOL, CM, COLON, COMMA, COMMENT, CONTAINS, DASHMATCH, DEG, DIMENSION, DIVIDE, DOLLAR, DOT, EM, ENDS, EOF, EQUAL, ERROR, EX, FONT_FACE_SYMBOL, FUNCTION, GRAD, HASH, HZ, IDENTIFIER, IMPORT_SYMBOL, IMPORTANT_SYMBOL, IN, INCLUDES, INTEGER, KHZ, LEFT_BRACE, LEFT_BRACKET, LEFT_CURLY_BRACE, MEDIA_SYMBOL, MINUS, MM, MS, NAMESPACE_MATCH, NAMESPACE_SYMBOL, PAGE_SYMBOL, PC, PERCENTAGE, PLUS, PRECEDE, PT, PX, RAD, REAL, RIGHT_BRACE, RIGHT_BRACKET, RIGHT_CURLY_BRACE, S, SEMI_COLON, SPACE, STRING, TILDE, UNICODE_RANGE, URI

Fields inherited from interface oracle.javatools.parser.Lexer

TK_EOF, TK_NOT_FOUND

Constructor Summary

CSSLexer()

Method Summary

void	backup() Unlexes the last found token.
protected void	convertToken()
protected int	fillLexerToken(LexerToken lexedToken) Utility routine to fill in the LexerToken structure with the current token information we have.
protected Tokenizer	getTokenizer()
int	lex(LexerToken lexedToken) Scans the text buffer at the current position and returns the token that was found.
protected int	nextToken()
protected void	resetTokenizer()
void	setLineMap(LineMap lineMap)
void	setPosition(int offset) Sets the current lex (read) position to the given offset in the buffer.
protected int	skipAtRule()
protected int	skipBlock() Utility routine which scans through the text buffer to find the end of an CSS style rule.
protected int	skipStyleRule() Utility routine which scans through the text buffer to find the end of an CSS style rule.
protected int	TokenizerToLanguageToken(int token)
protected void	updateState()

Methods inherited from class oracle.javatools.parser.AbstractLexer

createLexerToken, getTextBuffer, setTextBuffer

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_mLastToken

protected int _mLastToken

The last token found from lex() operation.

_mStartOffset

protected int _mStartOffset

The starting offset of the last token found.

_mEndOffset

protected int _mEndOffset

The ending offset of the last token found.

_mUseLastToken

protected boolean _mUseLastToken

Whether to use the last token that was found.

_mTokenizer

protected Tokenizer _mTokenizer

Tokenizer used to get lexical tokens.

_mReader

protected oracle.javatools.parser.css.CSSLexer.TextBufferReader _mReader

_mLineMap

protected LineMap _mLineMap

Constructor Detail

CSSLexer

public CSSLexer()

Method Detail

setLineMap

public void setLineMap(LineMap lineMap)

setPosition

public void setPosition(int offset)

Description copied from class: AbstractLexer

Sets the current lex (read) position to the given offset in the buffer. It is the clients responsibility to ensure that this offset corresponds to the start of a token, otherwise unexpected (and incorrect) results may occur.

Specified by:

setPosition in interface Lexer

Overrides:

setPosition in class AbstractLexer

Parameters:

offset - the offset for the next lex() operation.

lex

public int lex(LexerToken lexedToken)

Scans the text buffer at the current position and returns the token that was found. The token and offset information is also stored in the lexedToken instance passed in to the call.

Specified by:

lex in interface Lexer

Specified by:

lex in class AbstractLexer

Parameters:

lexedToken - the instance passed in where token info is stored

Returns:

the token that was found, same as calling lexedToken.getToken() (for convenience)

backup

public void backup()

Unlexes the last found token. The next call to lex() will return the last token and offset information found.

Specified by:

backup in interface Lexer

Specified by:

backup in class AbstractLexer

skipStyleRule

protected int skipStyleRule()

Utility routine which scans through the text buffer to find the end of an CSS style rule. Sets the current position following the trailing '}', or at the end of the file.

skipBlock

protected int skipBlock()

Utility routine which scans through the text buffer to find the end of an CSS style rule. Sets the current position following the trailing '}', or at the end of the file.

skipAtRule

protected int skipAtRule()

fillLexerToken

protected int fillLexerToken(LexerToken lexedToken)

Utility routine to fill in the LexerToken structure with the current token information we have. Returns the current token.

Parameters:

lexedToken - the client-specified LexerToken

Returns:

the last token found

resetTokenizer

protected void resetTokenizer()

nextToken

protected int nextToken()

getTokenizer

protected Tokenizer getTokenizer()

updateState

protected void updateState()
                    throws ParseException

Throws:

ParseException

convertToken

protected void convertToken()

TokenizerToLanguageToken

protected int TokenizerToLanguageToken(int token)

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