1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: static char sccsid[] = "@(#)stat.c	5.1 (Berkeley) 6/5/85";
   9: #endif not lint
  10: 
  11: /*
  12:  * pxp - Pascal execution profiler
  13:  *
  14:  * Bill Joy UCB
  15:  * Version 1.2 January 1979
  16:  */
  17: 
  18: #include "0.h"
  19: #include "tree.h"
  20: 
  21: int cntstat;
  22: int cnts = 3;
  23: 
  24: statlist(r)
  25:     int *r;
  26: {
  27:     register int *sl;
  28: 
  29:     sl = r;
  30:     if (sl != NIL)
  31:         for (;;) {
  32:             statement(sl[1]);
  33:             sl = sl[2];
  34:             if (sl == NIL)
  35:                 break;
  36:             ppsep(";");
  37:         }
  38:     else
  39:         statement(NIL);
  40: }
  41: 
  42: 
  43: statement(r)
  44:     int *r;
  45: {
  46:     register int *s;
  47: 
  48:     s = r;
  49: top:
  50:     if (cntstat) {
  51:         cntstat = 0;
  52:         getcnt();
  53:     }
  54:     if (s == NIL) {
  55:         putcm();
  56:         ppitem();
  57:         ppid("null");
  58:         return;
  59:     }
  60:     if (s[0] == T_REPEAT)
  61:         setinfo(s[1]);
  62:     else
  63:         setline(s[1]);
  64:     if (s[0] == T_LABEL) {
  65:         cntstat = 1;
  66:         ppnl();
  67:         labeled(s[2]);
  68:         statement(s[3]);
  69:         return;
  70:     }
  71:     switch (s[0]) {
  72:         default:
  73:             panic("stat");
  74:         case T_PCALL:
  75:             ppitem();
  76:             proc(s);
  77:             break;
  78:         case T_IF:
  79:         case T_IFEL:
  80:             ppnl();
  81:             indent();
  82:             ifop(s);
  83:             break;
  84:         case T_WHILE:
  85:             ppnl();
  86:             indent();
  87:             whilop(s);
  88:             break;
  89:         case T_REPEAT:
  90:             ppnl();
  91:             indent();
  92:             repop(s);
  93:             break;
  94:         case T_FORU:
  95:         case T_FORD:
  96:             ppnl();
  97:             indent();
  98:             forop(s);
  99:             break;
 100:         case T_BLOCK:
 101:             ppnl();
 102:             indent();
 103:             ppstbl(s, DECL);
 104:             break;
 105:         case T_ASGN:
 106:             ppitem();
 107:             asgnop(s);
 108:             break;
 109:         case T_GOTO:
 110:             ppitem();
 111:             gotoop(s[2]);
 112:             cntstat = 1;
 113:             break;
 114:         case T_CASE:
 115:             ppnl();
 116:             indent();
 117:             caseop(s);
 118:             break;
 119:         case T_WITH:
 120:             ppnl();
 121:             indent();
 122:             withop(s);
 123:             break;
 124:     }
 125:     setinfo(s[1]);
 126:     putcm();
 127: }
 128: 
 129: withop(s)
 130:     int *s;
 131: {
 132:     register *p;
 133: 
 134:     ppkw("with");
 135:     ppspac();
 136:     p = s[2];
 137:     if (p != NIL)
 138:         for (;;) {
 139:             lvalue(p[1]);
 140:             p = p[2];
 141:             if (p == NIL)
 142:                 break;
 143:             ppsep(", ");
 144:         }
 145:     else
 146:         ppid("{record variable list}");
 147:     ppstdo(s[3], DECL);
 148: }
 149: 
 150: asgnop(r)
 151:     int *r;
 152: {
 153: 
 154:     lvalue(r[2]);
 155:     ppsep(" := ");
 156:     rvalue(r[3], NIL);
 157: }
 158: 
 159: forop(r)
 160:     int *r;
 161: {
 162:     struct pxcnt scnt;
 163: 
 164:     savecnt(&scnt);
 165:     ppkw("for");
 166:     ppspac();
 167:     asgnop(r[2]);
 168:     ppspac();
 169:     ppkw(r[0] == T_FORU ? "to" : "downto");
 170:     ppspac();
 171:     rvalue(r[3], NIL);
 172:     getcnt();
 173:     ppstdo(r[4], STAT);
 174:     if (rescnt(&scnt))
 175:         getcnt();
 176: }
 177: 
 178: ifop(r)
 179:     int *r;
 180: {
 181:     register *s;
 182:     struct pxcnt scnt;
 183: 
 184:     ppkw("if");
 185:     ppspac();
 186:     rvalue(r[2], NIL);
 187:     ppspac();
 188:     ppkw("then");
 189:     ppspac();
 190:     s = r[3];
 191:     savecnt(&scnt);
 192:     getcnt();
 193:     if (s != NIL && s[0] == T_BLOCK)
 194:         ppstbl1(s, STAT);
 195:     else {
 196:         ppgoin(STAT);
 197:         statement(s);
 198:         ppgoout(STAT);
 199:     }
 200:     if (r[0] == T_IFEL) {
 201:         setcnt(cntof(&scnt)-nowcnt());
 202:         if (s == NIL || s[0] != T_BLOCK) {
 203:             ppnl();
 204:             indent();
 205:         } else {
 206:             ppstbl2();
 207:             ppspac();
 208:         }
 209:         s = r[4];
 210:         ppkw("else");
 211:         unprint();
 212:         ppspac();
 213:         if (s == NIL)
 214:             goto burp;
 215:         if (s[0] == T_BLOCK)
 216:             ppstbl1(s, STAT);
 217:         else if (s[0] == T_IF || s[0] == T_IFEL)
 218:             ifop(s);
 219:         else {
 220: burp:
 221:             ppgoin(STAT);
 222:             statement(s);
 223:             ppgoout(STAT);
 224:         }
 225:     }
 226:     if (rescnt(&scnt))
 227:         getcnt();
 228:     if (r[4] != NIL)
 229:         unprint();
 230:     if (s != NIL && s[0] == T_BLOCK)
 231:         ppstbl2();
 232: }
 233: 
 234: whilop(r)
 235:     int *r;
 236: {
 237:     struct pxcnt scnt;
 238: 
 239:     ppkw("while");
 240:     ppspac();
 241:     rvalue(r[2], NIL);
 242:     savecnt(&scnt);
 243:     getcnt();
 244:     ppstdo(r[3], STAT);
 245:     if (rescnt(&scnt))
 246:         getcnt();
 247: }
 248: 
 249: repop(r)
 250:     int *r;
 251: {
 252:     struct pxcnt scnt;
 253: 
 254:     ppkw("repeat");
 255:     ppgoin(STAT);
 256:     savecnt(&scnt);
 257:     getcnt();
 258:     statlist(r[2]);
 259:     ppgoout(DECL);
 260:     ppnl();
 261:     indent();
 262:     ppkw("until");
 263:     ppspac();
 264:     rvalue(r[3], NIL);
 265:     ppgoin(DECL);
 266:     ppgoout(STAT);
 267:     if (rescnt(&scnt))
 268:         getcnt();
 269: }
 270: 
 271: ppstbl(r, m)
 272: int *r;
 273: {
 274:     ppstbl1(r, m);
 275:     ppstbl2();
 276: }
 277: 
 278: ppstbl1(r, m)
 279: int *r;
 280: {
 281:     ppkw("begin");
 282:     ppgoin(m);
 283:     statlist(r[2]);
 284:     ppgoout(m);
 285: }
 286: 
 287: ppstbl2()
 288: {
 289:     ppnl();
 290:     indent();
 291:     ppkw("end");
 292: }
 293: 
 294: ppstdo(r, l)
 295: int *r;
 296: {
 297:     register *s;
 298: 
 299:     ppspac();
 300:     ppkw("do");
 301:     ppspac();
 302:     s = r;
 303:     if (s != NIL && s[0] == T_BLOCK)
 304:         ppstbl(s, l);
 305:     else {
 306:         ppgoin(l);
 307:         statement(s);
 308:         ppgoout(l);
 309:     }
 310: }

Defined functions

asgnop defined in line 150; used 2 times
forop defined in line 159; used 1 times
  • in line 98
ifop defined in line 178; used 2 times
ppstbl defined in line 271; used 2 times
ppstdo defined in line 294; used 3 times
repop defined in line 249; used 1 times
  • in line 92
statement defined in line 43; used 9 times
statlist defined in line 24; used 3 times
whilop defined in line 234; used 1 times
  • in line 87
withop defined in line 129; used 1 times

Defined variables

cnts defined in line 22; never used
cntstat defined in line 21; used 4 times
sccsid defined in line 8; never used
Last modified: 1985-06-06
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