projects / apple / security.git / blame
| Commit | Line | Data |
|---|---|---|
| 427c49bc A |
1 | #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: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/antlr/LLkParser.hpp#2 $ | |
| 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__ |