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a guest May 25th, 2019 72 Never
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  1. %{
  2. #include <string>
  3. #include "node.h"
  4. #include "parser.hpp"
  5. #define SAVE_TOKEN yylval.string = new std::string(yytext, yyleng)
  6. #define TOKEN(t) (yylval.token = t)
  7. extern "C" int yywrap() { }
  8. %}
  9.  
  10. %%
  11.  
  12. [ \t\n]                 ;
  13. "str"           return TOKEN(STRINGIDENTIFIER);
  14. "num"           return TOKEN(INTIDENTIFIER);
  15. "if"            return TOKEN(IF);
  16. "next"          return TOKEN(NEXT);
  17. "for"           return TOKEN(FOR);
  18. "fnc"           return TOKEN(FUNC);
  19. [a-zA-Z_][a-zA-Z0-9_]*  SAVE_TOKEN; return TIDENTIFIER;
  20. [0-9]+                  SAVE_TOKEN; return TINTEGER;
  21. (\".*\")        SAVE_TOKEN; return TSTRING
  22. "+"                     return TOKEN(TPLUS);
  23. "="                     return TOKEN(TEQUAL);
  24. "-"                     return TOKEN(TMINUS);
  25. "("         return TOKEN(LEFTPARENTHESIS);
  26. ")"         return TOKEN(RIGHTPARENTHESIS);
  27. "{"         return TOKEN(LEFTBRACE);
  28. "{"         return TOKEN(RIGHTBRACE);
  29. ","         return TOKEN(COMMA);
  30. .                       printf("Unknown token!n"); yyterminate();
  31.  
  32. %%
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