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