Package com.intellij.lexer

Class LayeredLexer

java.lang.Object

com.intellij.lexer.Lexer

com.intellij.lexer.LexerBase

com.intellij.lexer.DelegateLexer

com.intellij.lexer.LayeredLexer

Direct Known Subclasses:

JavaHighlightingLexer, MarkdownHighlightingLexer, PropertiesHighlightingLexer, PropertiesValueHighlightingLexer

public class LayeredLexer
extends DelegateLexer

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.ThreadLocal<java.lang.Boolean>	ourDisableLayersFlag

Fields inherited from class com.intellij.lexer.DelegateLexer

myDelegate

Constructor Summary

Constructors

Constructor and Description
LayeredLexer(Lexer baseLexer)

Method Summary

Modifier and Type	Method and Description
void	advance() Advances the lexer to the next token.
protected Lexer	findLayerLexer(IElementType baseTokenType)
LexerPosition	getCurrentPosition() Returns the current position and state of the lexer.
int	getState() Returns the current state of the lexer.
int	getTokenEnd() Returns the end offset of the current token.
int	getTokenStart() Returns the start offset of the current token.
IElementType	getTokenType() Returns the token at the current position of the lexer or null if lexing is finished.
protected boolean	isLayerActive()
void	registerLayer(Lexer lexer, IElementType... startTokens)
void	registerSelfStoppingLayer(Lexer lexer, IElementType[] startTokens, IElementType[] stopTokens)
void	restore(LexerPosition position) Restores the lexer to the specified state and position.
void	start(java.lang.CharSequence buffer, int startOffset, int endOffset, int initialState) Prepare for lexing character data from buffer passed.

Methods inherited from class com.intellij.lexer.DelegateLexer

getBufferEnd, getBufferSequence, getDelegate

Methods inherited from class com.intellij.lexer.Lexer

getTokenSequence, getTokenText, start, start

Methods inherited from class java.lang.Object

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

Field Detail

ourDisableLayersFlag

public static final java.lang.ThreadLocal<java.lang.Boolean> ourDisableLayersFlag

Constructor Detail

LayeredLexer

public LayeredLexer(Lexer baseLexer)

Method Detail

registerSelfStoppingLayer

public void registerSelfStoppingLayer(Lexer lexer,
                                      IElementType[] startTokens,
                                      IElementType[] stopTokens)

registerLayer

public void registerLayer(Lexer lexer,
                          IElementType... startTokens)

findLayerLexer

protected Lexer findLayerLexer(IElementType baseTokenType)

start

public void start(java.lang.CharSequence buffer,
                  int startOffset,
                  int endOffset,
                  int initialState)

Description copied from class: Lexer

Prepare for lexing character data from buffer passed. Internal lexer state is supposed to be initialState. It is guaranteed that the value of initialState is the same as returned by Lexer.getState() method of this lexer at condition startOffset=getTokenStart(). This method is used to incrementally re-lex changed characters using lexing data acquired from this particular lexer sometime in the past.

Overrides:

start in class DelegateLexer

Parameters:

buffer - character data for lexing.

startOffset - offset to start lexing from

endOffset - offset to stop lexing at

initialState - the initial state of the lexer.

getState

public int getState()

Description copied from class: Lexer

Returns the current state of the lexer.

Overrides:

getState in class DelegateLexer

Returns:

the lexer state.

getTokenType

public IElementType getTokenType()

Description copied from class: Lexer

Returns the token at the current position of the lexer or null if lexing is finished.

Overrides:

getTokenType in class DelegateLexer

Returns:

the current token.

getTokenStart

public int getTokenStart()

Description copied from class: Lexer

Returns the start offset of the current token.

Overrides:

getTokenStart in class DelegateLexer

Returns:

the current token start offset.

getTokenEnd

public int getTokenEnd()

Description copied from class: Lexer

Returns the end offset of the current token.

Overrides:

getTokenEnd in class DelegateLexer

Returns:

the current token end offset.

advance

public void advance()

Description copied from class: Lexer

Advances the lexer to the next token.

Overrides:

advance in class DelegateLexer

getCurrentPosition

public LexerPosition getCurrentPosition()

Description copied from class: Lexer

Returns the current position and state of the lexer.

Overrides:

getCurrentPosition in class LexerBase

Returns:

the lexer position and state.

restore

public void restore(LexerPosition position)

Description copied from class: Lexer

Restores the lexer to the specified state and position.

Overrides:

restore in class LexerBase

Parameters:

position - the state and position to restore to.

isLayerActive

protected boolean isLayerActive()