UNIX 7th Ed. - /usr/src/cmd/cpp/cpy.y

   1: %term number stop DEFINED
   2: %term EQ NE LE GE LS RS
   3: %term ANDAND OROR
   4: %left ','
   5: %right '='
   6: %right '?' ':'
   7: %left OROR
   8: %left ANDAND
   9: %left '|' '^'
  10: %left '&'
  11: %binary EQ NE
  12: %binary '<' '>' LE GE
  13: %left LS RS
  14: %left '+' '-'
  15: %left '*' '/' '%'
  16: %right '!' '~' UMINUS
  17: %left '(' '.'
  18: %%
  19: S:  e stop  ={return($1);}
  20: 
  21: 
  22: e:    e '*' e
  23:         ={$$ = $1 * $3;}
  24:     | e '/' e
  25:         ={$$ = $1 / $3;}
  26:     | e '%' e
  27:         ={$$ = $1 % $3;}
  28:     | e '+' e
  29:         ={$$ = $1 + $3;}
  30:     | e '-' e
  31:         ={$$ = $1 - $3;}
  32:     | e LS e
  33:         ={$$ = $1 << $3;}
  34:     | e RS e
  35:         ={$$ = $1 >> $3;}
  36:     | e '<' e
  37:         ={$$ = $1 < $3;}
  38:     | e '>' e
  39:         ={$$ = $1 > $3;}
  40:     | e LE e
  41:         ={$$ = $1 <= $3;}
  42:     | e GE e
  43:         ={$$ = $1 >= $3;}
  44:     | e EQ e
  45:         ={$$ = $1 == $3;}
  46:     | e NE e
  47:         ={$$ = $1 != $3;}
  48:     | e '&' e
  49:         ={$$ = $1 & $3;}
  50:     | e '^' e
  51:         ={$$ = $1 ^ $3;}
  52:     | e '|' e
  53:         ={$$ = $1 | $3;}
  54:     | e ANDAND e
  55:         ={$$ = $1 && $3;}
  56:     | e OROR e
  57:         ={$$ = $1 || $3;}
  58:     | e '?' e ':' e
  59:         ={$$ = $1 ? $3 : $5;}
  60:     | e ',' e
  61:         ={$$ = $3;}
  62:     | term
  63:         ={$$ = $1;}
  64: term:
  65:       '-' term %prec UMINUS
  66:         ={$$ = -$1;}
  67:     | '!' term
  68:         ={$$ = !$1;}
  69:     | '~' term
  70:         ={$$ = ~$1;}
  71:     | '(' e ')'
  72:         ={$$ = $2;}
  73:     | DEFINED '(' number ')'
  74:         ={$$= $3;}
  75:     | DEFINED number
  76:         ={$$ = $2;}
  77:     | number
  78:         ={$$= $1;}
  79: %%
  80: # include "yylex.c"