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  1. %{
  2. #include "y.tab.h"
  3. %}
  4.  
  5. %%
  6. "if"            { return IF; }
  7. "else"          { return ELSE; }
  8. "while"         { return WHILE; }
  9. "for"           { return FOR; }
  10. "int"           { return INT; }
  11. "float"         { return FLOAT; }
  12. "char"          { return CHAR; }
  13. "return"        { return RETURN; }
  14.  
  15. [0-9]+          { return NUMBER; }
  16. [a-zA-Z_][a-zA-Z0-9_]*   { return ID; }
  17.  
  18. "=="            { return EQ; }
  19. "!="            { return NEQ; }
  20. "<="            { return LE; }
  21. ">="            { return GE; }
  22. "<"             { return LT; }
  23. ">"             { return GT; }
  24.  
  25. "="             { return ASSIGN; }
  26. ";"             { return SEMI; }
  27. ","             { return COMMA; }
  28. "("             { return LPAREN; }
  29. ")"             { return RPAREN; }
  30. "{"             { return LBRACE; }
  31. "}"             { return RBRACE; }
  32.  
  33. "+"             { return PLUS; }
  34. "-"             { return MINUS; }
  35. "*"             { return MUL; }
  36. "/"             { return DIV; }
  37.  
  38. [ \t\n]+        ;     /* ignore whitespace */
  39.  
  40. .               { return yytext[0]; }
  41.  
  42. %%
  43.  
  44. int yywrap() {
  45.     return 1;
  46. }
  47.  
Success #stdin #stdout #stderr 0.04s 6952KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/dP3Lkf/prog:2:1: Syntax error: Operator expected
ERROR: /home/dP3Lkf/prog:46:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/V99rHy
language:
Prolog (swi 7.6.4)
created:
9 days ago
visibility:
public

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