| 1 |
tim |
2469 |
#ifndef INC_LLkParser_hpp__ |
| 2 |
|
|
#define INC_LLkParser_hpp__ |
| 3 |
|
|
|
| 4 |
|
|
/* ANTLR Translator Generator |
| 5 |
|
|
* Project led by Terence Parr at http://www.jGuru.com |
| 6 |
|
|
* Software rights: http://www.antlr.org/license.html |
| 7 |
|
|
* |
| 8 |
|
|
* $Id: LLkParser.hpp,v 1.1 2005-12-02 15:38:02 tim Exp $ |
| 9 |
|
|
*/ |
| 10 |
|
|
|
| 11 |
|
|
#include <antlr/config.hpp> |
| 12 |
|
|
#include <antlr/Parser.hpp> |
| 13 |
|
|
|
| 14 |
|
|
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
| 15 |
|
|
namespace antlr { |
| 16 |
|
|
#endif |
| 17 |
|
|
|
| 18 |
|
|
/**An LL(k) parser. |
| 19 |
|
|
* |
| 20 |
|
|
* @see antlr.Token |
| 21 |
|
|
* @see antlr.TokenBuffer |
| 22 |
|
|
* @see antlr.LL1Parser |
| 23 |
|
|
*/ |
| 24 |
|
|
class ANTLR_API LLkParser : public Parser { |
| 25 |
|
|
public: |
| 26 |
|
|
LLkParser(const ParserSharedInputState& lexer, int k_); |
| 27 |
|
|
|
| 28 |
|
|
LLkParser(TokenBuffer& tokenBuf, int k_); |
| 29 |
|
|
|
| 30 |
|
|
LLkParser(TokenStream& lexer, int k_); |
| 31 |
|
|
|
| 32 |
|
|
/** Consume another token from the input stream. Can only write sequentially! |
| 33 |
|
|
* If you need 3 tokens ahead, you must consume() 3 times. |
| 34 |
|
|
* <p> |
| 35 |
|
|
* Note that it is possible to overwrite tokens that have not been matched. |
| 36 |
|
|
* For example, calling consume() 3 times when k=2, means that the first token |
| 37 |
|
|
* consumed will be overwritten with the 3rd. |
| 38 |
|
|
*/ |
| 39 |
|
|
virtual inline void consume() |
| 40 |
|
|
{ |
| 41 |
|
|
inputState->getInput().consume(); |
| 42 |
|
|
} |
| 43 |
|
|
|
| 44 |
|
|
virtual inline int LA(unsigned int i) |
| 45 |
|
|
{ |
| 46 |
|
|
return inputState->getInput().LA(i); |
| 47 |
|
|
} |
| 48 |
|
|
|
| 49 |
|
|
virtual inline RefToken LT(unsigned int i) |
| 50 |
|
|
{ |
| 51 |
|
|
return inputState->getInput().LT(i); |
| 52 |
|
|
} |
| 53 |
|
|
protected: |
| 54 |
|
|
/// the lookahead this LL(k) parser is using. |
| 55 |
|
|
int k; |
| 56 |
|
|
private: |
| 57 |
|
|
void trace(const char* ee, const char* rname); |
| 58 |
|
|
public: |
| 59 |
|
|
virtual void traceIn(const char* rname); |
| 60 |
|
|
virtual void traceOut(const char* rname); |
| 61 |
|
|
}; |
| 62 |
|
|
|
| 63 |
|
|
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
| 64 |
|
|
} |
| 65 |
|
|
#endif |
| 66 |
|
|
|
| 67 |
|
|
#endif //INC_LLkParser_hpp__ |
