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#ifndef INC_TokenStreamBasicFilter_hpp__
#define INC_TokenStreamBasicFilter_hpp__
#include "antlr/config.hpp"
#include "antlr/BitSet.hpp"
#include "antlr/TokenStream.hpp"
ANTLR_BEGIN_NAMESPACE(antlr)
/** 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.
*/
class TokenStreamBasicFilter : public TokenStream {
/** The set of token types to discard */
protected:
BitSet discardMask;
/** The input stream */
protected:
TokenStream* input;
public:
TokenStreamBasicFilter(TokenStream& input_);
void discard(int ttype);
void discard(const BitSet& mask);
RefToken nextToken();
};
ANTLR_END_NAMESPACE
#endif //INC_TokenStreamBasicFilter_hpp__
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