2.9BSD - /usr/src/ucb/pascal/pxp/yyprint.c

   1: #
   2: /*
   3:  * pi - Pascal interpreter code translator
   4:  *
   5:  * Charles Haley, Bill Joy UCB
   6:  * Version 1.2 January 1979
   7:  *
   8:  *
   9:  * pxp - Pascal execution profiler
  10:  *
  11:  * Bill Joy UCB
  12:  * Version 1.2 January 1979
  13:  */
  14: 
  15: #include "0.h"
  16: #include "yy.h"
  17: 
  18: long    tokname();
  19: 
  20: STATIC  char bounce;
  21: 
  22: /*
  23:  * Printing representation of a
  24:  * "character" - a lexical token
  25:  * not in a yytok structure.
  26:  */
  27: long
  28: charname(ch)
  29:     int ch;
  30: {
  31:     struct yytok Ych;
  32: 
  33:     Ych.Yychar = ch;
  34:     Ych.Yylval = nullsem(ch);
  35:     return (tokname(&Ych));
  36: }
  37: 
  38: /*
  39:  * Printing representation of a token
  40:  */
  41: long
  42: tokname(tp)
  43:     register struct yytok *tp;
  44: {
  45:     register char *cp;
  46:     register struct kwtab *kp;
  47:     long l;
  48: 
  49:     (&l)->pint2 = "";
  50:     switch (tp->Yychar) {
  51:         case YCASELAB:
  52:             cp = "case-label";
  53:             break;
  54:         case YEOF:
  55:             cp = "end-of-file";
  56:             break;
  57:         case YILLCH:
  58:             cp = "illegal character";
  59:             break;
  60:         case 256:
  61:             /* error token */
  62:             cp = "error";
  63:             break;
  64:         case YID:
  65:             cp = "identifier";
  66:             break;
  67:         case YNUMB:
  68:             cp = "real number";
  69:             break;
  70:         case YINT:
  71:         case YBINT:
  72:             cp = "number";
  73:             break;
  74:         case YSTRING:
  75:             cp = tp->Yylval;
  76:             cp = cp == NIL || cp[1] == 0 ? "character" : "string";
  77:             break;
  78:         case YDOTDOT:
  79:             cp = "'..'";
  80:             break;
  81:         default:
  82:             if (tp->Yychar < 256) {
  83:                 cp = "'x'\0'x'";
  84:                 if (bounce = ((bounce + 1) & 1))
  85:                     cp =+ 4;
  86:                 cp[1] = tp->Yychar;
  87:                 break;
  88:             }
  89:             for (kp = yykey; kp->kw_str != NIL && kp->kw_val != tp->Yychar; kp++)
  90:                 continue;
  91:             cp = "keyword ";
  92:             (&l)->pint2 = kp->kw_str;
  93:     }
  94:     (&l)->pint = cp;
  95:     return (l);
  96: }

Defined functions

Defined variables