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68 lines
1.5 KiB
68 lines
1.5 KiB
#ifndef INC_LLkParser_h__
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#define INC_LLkParser_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/Parser.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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/**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_h__
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