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#ifndef INC_LLkParser_hpp__ |
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#define INC_LLkParser_hpp__ |
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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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gezelter |
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* $Id$ |
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tim |
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*/ |
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#include <antlr/config.hpp> |
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#include <antlr/Parser.hpp> |
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
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namespace antlr { |
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#endif |
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/**An LL(k) parser. |
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* |
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* @see antlr.Token |
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* @see antlr.TokenBuffer |
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* @see antlr.LL1Parser |
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*/ |
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class ANTLR_API LLkParser : public Parser { |
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public: |
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LLkParser(const ParserSharedInputState& lexer, int k_); |
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LLkParser(TokenBuffer& tokenBuf, int k_); |
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LLkParser(TokenStream& lexer, int k_); |
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/** Consume another token from the input stream. Can only write sequentially! |
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* If you need 3 tokens ahead, you must consume() 3 times. |
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* <p> |
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* Note that it is possible to overwrite tokens that have not been matched. |
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* For example, calling consume() 3 times when k=2, means that the first token |
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* consumed will be overwritten with the 3rd. |
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*/ |
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virtual inline void consume() |
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{ |
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inputState->getInput().consume(); |
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} |
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virtual inline int LA(unsigned int i) |
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{ |
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return inputState->getInput().LA(i); |
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} |
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virtual inline RefToken LT(unsigned int i) |
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{ |
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return inputState->getInput().LT(i); |
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} |
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protected: |
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/// the lookahead this LL(k) parser is using. |
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int k; |
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private: |
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void trace(const char* ee, const char* rname); |
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public: |
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virtual void traceIn(const char* rname); |
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virtual void traceOut(const char* rname); |
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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_LLkParser_hpp__ |
