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47 lines
965 B
47 lines
965 B
#ifndef INC_TokenStreamBasicFilter_h__
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#define INC_TokenStreamBasicFilter_h__
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/* ANTLR Translator Generator
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* Project led by Terence Parr at http://www.jGuru.com
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* Software rights: http://www.antlr.org/license.html
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*
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* $Id$
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*/
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#include <antlr/config.h>
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#include <antlr/BitSet.h>
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#include <antlr/TokenStream.h>
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
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namespace antlr {
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#endif
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/** This object is a TokenStream that passes through all
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* tokens except for those that you tell it to discard.
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* There is no buffering of the tokens.
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*/
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class ANTLR_API TokenStreamBasicFilter : public TokenStream {
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/** The set of token types to discard */
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protected:
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BitSet discardMask;
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/** The input stream */
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protected:
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TokenStream* input;
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public:
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TokenStreamBasicFilter(TokenStream& input_);
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void discard(int ttype);
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void discard(const BitSet& mask);
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RefToken nextToken();
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};
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
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}
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#endif
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#endif //INC_TokenStreamBasicFilter_h__
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