org.codehaus.groovy.syntax.lexer
Class GStringLexer

java.lang.Object
  org.codehaus.groovy.syntax.lexer.LexerBase
      org.codehaus.groovy.syntax.lexer.GStringLexer

All Implemented Interfaces:

Lexer

public class GStringLexer

extends LexerBase

A lexer for GStrings, usually run on a LexerFilter base.

Author:

Chris Poirier

Field Summary

protected GroovyExpressionLexer	child
protected java.lang.StringBuffer	fullText
protected int	fullTextStartColumn
protected int	fullTextStartLine
protected boolean	inExpression
protected boolean	sentEndToken
protected boolean	sentStartToken

Fields inherited from class org.codehaus.groovy.syntax.lexer.LexerBase

delegate, source, startColumn, startLine

Constructor Summary

GStringLexer()

Method Summary

char	consume() Eats a character from the input stream.
void	delegate(Lexer to) Delegates our duties to another Lexer.
void	setSource(Lexer source) Sets the source lexer.
protected void	sourceDelimiting(boolean delimit) Coordinates with our source about delimiting.
void	undelegate() Retakes responsibility for our duties.
protected Token	undelegatedNextToken() Finds and returns (consuming) the next token from the underlying stream.
void	unsetSource() Unsets the source lexer.

Methods inherited from class org.codehaus.groovy.syntax.lexer.LexerBase

getColumn, getDelegate, getLine, getSource, getStartColumn, getStartLine, isDelegated, isExternallySourced, la, la, mark, nextToken, readEOL, readEOL, reset, symbol, symbol, tokenizeEOL, unexpected, unexpected, unexpected

Methods inherited from class java.lang.Object

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

Field Detail

sentStartToken

protected boolean sentStartToken

sentEndToken

protected boolean sentEndToken

fullText

protected java.lang.StringBuffer fullText

fullTextStartLine

protected int fullTextStartLine

fullTextStartColumn

protected int fullTextStartColumn

child

protected GroovyExpressionLexer child

inExpression

protected boolean inExpression

Constructor Detail

GStringLexer

public GStringLexer()

Method Detail

undelegatedNextToken

protected Token undelegatedNextToken()
                              throws ReadException,
                                     LexerException

Finds and returns (consuming) the next token from the underlying stream. Returns null when out of tokens.

Overrides:

undelegatedNextToken in class LexerBase

Throws:

ReadException

LexerException

sourceDelimiting

protected void sourceDelimiting(boolean delimit)

Coordinates with our source about delimiting. When entering or processing sub-expressions, source delimiting should be off.

delegate

public void delegate(Lexer to)

Delegates our duties to another Lexer.

Specified by:

delegate in interface Lexer

Overrides:

delegate in class LexerBase

undelegate

public void undelegate()

Retakes responsibility for our duties.

Specified by:

undelegate in interface Lexer

Overrides:

undelegate in class LexerBase

setSource

public void setSource(Lexer source)

Sets the source lexer.

Specified by:

setSource in interface Lexer

Overrides:

setSource in class LexerBase

unsetSource

public void unsetSource()

Unsets the source lexer.

Specified by:

unsetSource in interface Lexer

Overrides:

unsetSource in class LexerBase

consume

public char consume()
             throws LexerException,
                    ReadException

Eats a character from the input stream.

Specified by:

consume in interface Lexer

Overrides:

consume in class LexerBase

Throws:

LexerException

ReadException