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TokenStreamSelector Class Reference

#include <TokenStreamSelector.hpp>

Inheritance diagram for TokenStreamSelector:

List of all members.

Public Methods
	TokenStreamSelector ()
	~TokenStreamSelector ()
void	addInputStream (TokenStream *stream, const ANTLR_USE_NAMESPACE(std) string &key)
TokenStream *	getCurrentStream () const
	Return the stream from which tokens are being pulled at the moment.
TokenStream *	getStream (const ANTLR_USE_NAMESPACE(std) string &sname) const
RefToken	nextToken ()
TokenStream *	pop ()
void	push (TokenStream *stream)
void	push (const ANTLR_USE_NAMESPACE(std) string &sname)
void	retry ()
void	select (TokenStream *stream)
void	select (const ANTLR_USE_NAMESPACE(std) string &sname)
Protected Types
typedef TokenStream *	inputStreamNames_coll
Protected Methods
typedef	ANTLR_USE_NAMESPACE (std) map< ANTLR_USE_NAMESPACE(std) string
typedef	ANTLR_USE_NAMESPACE (std) stack< TokenStream * > streamStack_coll
Protected Attributes
inputStreamNames_coll	inputStreamNames
TokenStream *	input
streamStack_coll	streamStack

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Detailed Description

A token stream MUX (multiplexor) knows about n token streams and can multiplex them onto the same channel for use by token stream consumer like a parser. This is a way to have multiple lexers break up the same input stream for a single parser. Or, you can have multiple instances of the same lexer handle multiple input streams; this works great for includes.

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Member Typedef Documentation

typedef TokenStream* TokenStreamSelector::inputStreamNames_coll [protected]

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Constructor & Destructor Documentation

TokenStreamSelector::TokenStreamSelector (    )

A token stream MUX (multiplexor) knows about n token streams and can multiplex them onto the same channel for use by token stream consumer like a parser. This is a way to have multiple lexers break up the same input stream for a single parser. Or, you can have multiple instances of the same lexer handle multiple input streams; this works great for includes.

TokenStreamSelector::~TokenStreamSelector (    )

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Member Function Documentation

void TokenStreamSelector::addInputStream (  TokenStream *    stream, const ANTLR_USE_NAMESPACE(std) string &    key )

typedef TokenStreamSelector::ANTLR_USE_NAMESPACE (  std    )  [protected]

Used to track stack of input streams

typedef TokenStreamSelector::ANTLR_USE_NAMESPACE (  std    )  [protected]

The set of inputs to the MUX

TokenStream * TokenStreamSelector::getCurrentStream (    )

Return the stream from which tokens are being pulled at the moment.

TokenStream * TokenStreamSelector::getStream (  const ANTLR_USE_NAMESPACE(std) string &    sname )  const

RefToken TokenStreamSelector::nextToken (    )  [virtual]

Implements TokenStream.

TokenStream * TokenStreamSelector::pop (    )

void TokenStreamSelector::push (  const ANTLR_USE_NAMESPACE(std) string &    sname )

void TokenStreamSelector::push (  TokenStream *    stream )

void TokenStreamSelector::retry (    )

Abort recognition of current Token and try again. A stream can push a new stream (for include files for example, and then retry(), which will cause the current stream to abort back to this.nextToken(). this.nextToken() then asks for a token from the current stream, which is the new "substream."

void TokenStreamSelector::select (  const ANTLR_USE_NAMESPACE(std) string &    sname )

void TokenStreamSelector::select (  TokenStream *    stream )

Set the stream without pushing old stream

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Member Data Documentation

TokenStream* TokenStreamSelector::input [protected]

The currently-selected token stream input

inputStreamNames_coll TokenStreamSelector::inputStreamNames [protected]

streamStack_coll TokenStreamSelector::streamStack [protected]

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The documentation for this class was generated from the following files:

• TokenStreamSelector.hpp
• TokenStreamSelector.cpp

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