antlr
Class TokenStreamBasicFilter

java.lang.Object
  |
  +--antlr.TokenStreamBasicFilter

All Implemented Interfaces:

TokenStream

Direct Known Subclasses:

TokenStreamHiddenTokenFilter

public class TokenStreamBasicFilter

extends java.lang.Object

implements TokenStream

This object is a TokenStream that passes through all tokens except for those that you tell it to discard. There is no buffering of the tokens.

Field Summary

protected BitSet	discardMask The set of token types to discard
protected TokenStream	input The input stream

Constructor Summary

TokenStreamBasicFilter(TokenStream input)

Method Summary

void	discard(BitSet mask)
void	discard(int ttype)
Token	nextToken()

Methods inherited from class java.lang.Object

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

Field Detail

discardMask

protected BitSet discardMask

The set of token types to discard

input

protected TokenStream input

The input stream

Constructor Detail

TokenStreamBasicFilter

public TokenStreamBasicFilter(TokenStream input)

Method Detail

discard

public void discard(int ttype)

discard

public void discard(BitSet mask)

nextToken

public Token nextToken()
                throws TokenStreamException

Specified by:

nextToken in interface TokenStream

TokenStreamException