Remarks

Filters out tokens whose Value is WhitespaceTag.Value.

Type Constraints

Token

:

IHasValue<object>

Public Member Functions
	WhitespaceFilter (ILexer< Token > lexer)

override Maybe< Token >	NextToken ()
	Returns the next (postprocessed) token. This method should set the `_current` field to the returned value. More...

Public Member Functions inherited from Loyc.Syntax.Lexing.LexerWrapper< Token >
	LexerWrapper (ILexer< Token > sourceLexer)

SourcePos	IndexToLine (int index)
	Returns the position in a source file of the specified index. More...

virtual void	Reset ()

Additional Inherited Members
Properties inherited from Loyc.Syntax.Lexing.LexerWrapper< Token >
ILexer< Token >	Lexer `[get, set]`

ISourceFile	SourceFile `[get]`

virtual IMessageSink	ErrorSink `[get, set]`

int	IndentLevel `[get]`

UString	IndentString `[get]`

int	LineNumber `[get]`

int	InputPosition `[get]`

Properties inherited from Loyc.Syntax.Lexing.ILexer< Token >
ISourceFile	SourceFile `[get]`
	The file being lexed. More...

IMessageSink	ErrorSink `[get, set]`
	Event handler for errors. More...

int	IndentLevel `[get]`
	Indentation level of the current line. This is updated after scanning the first whitespaces on a new line, and may be reset to zero when NextToken() returns a newline. More...

UString	IndentString `[get]`
	Gets a string slice that holds the spaces or tabs that were used to indent the current line. More...

int	LineNumber `[get]`
	Current line number (1 for the first line). More...

int	InputPosition `[get]`
	Current input position (an index into SourceFile.Text). More...

Protected Member Functions inherited from Loyc.Syntax.Lexing.LexerWrapper< Token >
void	WriteError (int index, string msg, params object[] args)

Protected fields inherited from Loyc.Syntax.Lexing.LexerWrapper< Token >
Maybe< Token >	_current

Member Function Documentation

override Maybe<Token> Loyc.Syntax.Lexing.WhitespaceFilter< Token >.NextToken ( )

inlinevirtual

Returns the next (postprocessed) token. This method should set the _current field to the returned value.