ANTLR Support Libraries 2.7.1+
Public Member Functions | Protected Member Functions | Protected Attributes | Private Member Functions | Private Attributes
TokenStreamHiddenTokenFilter Class Reference

#include <TokenStreamHiddenTokenFilter.hpp>

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List of all members.

Public Member Functions

 TokenStreamHiddenTokenFilter (TokenStream &input)
BitSet getDiscardMask () const
RefToken getHiddenAfter (RefToken t)
RefToken getHiddenBefore (RefToken t)
BitSet getHideMask () const
RefToken getInitialHiddenToken ()
void hide (int m)
void hide (const BitSet &mask)
RefToken nextToken ()

Protected Member Functions

void consume ()
RefToken LA (int i)

Protected Attributes

BitSet hideMask
RefToken lastHiddenToken
RefToken firstHidden

Private Member Functions

void consumeFirst ()

Private Attributes

RefToken nextMonitoredToken

Detailed Description

This object filters a token stream coming from a lexer or another TokenStream so that only certain token channels get transmitted to the parser.

Any of the channels can be filtered off as "hidden" channels whose tokens can be accessed from the parser.


Constructor & Destructor Documentation

This object filters a token stream coming from a lexer or another TokenStream so that only certain token channels get transmitted to the parser.

Any of the channels can be filtered off as "hidden" channels whose tokens can be accessed from the parser.


Member Function Documentation

Return a ptr to the hidden token appearing immediately after token t in the input stream.

Return a ptr to the hidden token appearing immediately before token t in the input stream.

Return the first hidden token if one appears before any monitored token.

Return the next monitored token. Test the token following the monitored token. If following is another monitored token, save it for the next invocation of nextToken (like a single lookahead token) and return it then. If following is unmonitored, nondiscarded (hidden) channel token, add it to the monitored token.

Note: EOF must be a monitored Token.

Reimplemented from TokenStreamBasicFilter.


Member Data Documentation

track tail of hidden list emanating from previous monitored token


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