libsecurity_codesigning/antlr2/antlr/LLkParser.hpp

   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__