1: #
   2: /*
   3:  * pxp - Pascal execution profiler
   4:  *
   5:  * Bill Joy UCB
   6:  * Version 1.2 January 1979
   7:  */
   8: 
   9: #include "0.h"
  10: #include "tree.h"
  11: 
  12: int cntstat;
  13: int cnts = 2;
  14: 
  15: statlist(r)
  16:     int *r;
  17: {
  18:     register int *sl;
  19: 
  20:     sl = r;
  21:     if (sl != NIL)
  22:         for (;;) {
  23:             statement(sl[1]);
  24:             sl = sl[2];
  25:             if (sl == NIL)
  26:                 break;
  27:             ppsep(";");
  28:         }
  29:     else
  30:         statement(NIL);
  31: }
  32: 
  33: 
  34: statement(r)
  35:     int *r;
  36: {
  37:     register int *s;
  38: 
  39:     s = r;
  40: top:
  41:     if (cntstat) {
  42:         cntstat = 0;
  43:         getcnt();
  44:     }
  45:     if (s == NIL) {
  46:         putcm();
  47:         ppitem();
  48:         ppid("null");
  49:         return;
  50:     }
  51:     if (s[0] == T_REPEAT)
  52:         setinfo(s[1]);
  53:     else
  54:         setline(s[1]);
  55:     if (s[0] == T_LABEL) {
  56:         cntstat = 1;
  57:         ppnl();
  58:         labeled(s[2]);
  59:         statement(s[3]);
  60:         return;
  61:     }
  62:     switch (s[0]) {
  63:         default:
  64:             panic("stat");
  65:         case T_PCALL:
  66:             ppitem();
  67:             proc(s);
  68:             break;
  69:         case T_IF:
  70:         case T_IFEL:
  71:             ppnl();
  72:             indent();
  73:             ifop(s);
  74:             break;
  75:         case T_WHILE:
  76:             ppnl();
  77:             indent();
  78:             whilop(s);
  79:             break;
  80:         case T_REPEAT:
  81:             ppnl();
  82:             indent();
  83:             repop(s);
  84:             break;
  85:         case T_FORU:
  86:         case T_FORD:
  87:             ppnl();
  88:             indent();
  89:             forop(s);
  90:             break;
  91:         case T_BLOCK:
  92:             ppnl();
  93:             indent();
  94:             ppstbl(s, DECL);
  95:             break;
  96:         case T_ASGN:
  97:             ppitem();
  98:             asgnop(s);
  99:             break;
 100:         case T_GOTO:
 101:             ppitem();
 102:             gotoop(s[2]);
 103:             cntstat = 1;
 104:             break;
 105:         case T_CASE:
 106:             ppnl();
 107:             indent();
 108:             caseop(s);
 109:             break;
 110:         case T_WITH:
 111:             ppnl();
 112:             indent();
 113:             withop(s);
 114:             break;
 115:         case T_ASRT:
 116:             ppitem();
 117:             asrtop(s);
 118:             break;
 119:     }
 120:     setinfo(s[1]);
 121:     putcm();
 122: }
 123: 
 124: withop(s)
 125:     int *s;
 126: {
 127:     register *p;
 128: 
 129:     ppkw("with");
 130:     ppspac();
 131:     p = s[2];
 132:     if (p != NIL)
 133:         for (;;) {
 134:             lvalue(p[1]);
 135:             p = p[2];
 136:             if (p == NIL)
 137:                 break;
 138:             ppsep(", ");
 139:         }
 140:     else
 141:         ppid("{record variable list}");
 142:     ppstdo(s[3], DECL);
 143: }
 144: 
 145: asgnop(r)
 146:     int *r;
 147: {
 148: 
 149:     lvalue(r[2]);
 150:     ppsep(" := ");
 151:     rvalue(r[3], NIL);
 152: }
 153: 
 154: forop(r)
 155:     int *r;
 156: {
 157:     struct pxcnt scnt;
 158: 
 159:     savecnt(&scnt);
 160:     ppkw("for");
 161:     ppspac();
 162:     asgnop(r[2]);
 163:     ppspac();
 164:     ppkw(r[0] == T_FORU ? "to" : "downto");
 165:     ppspac();
 166:     rvalue(r[3], NIL);
 167:     getcnt();
 168:     ppstdo(r[4], STAT);
 169:     if (rescnt(&scnt))
 170:         getcnt();
 171: }
 172: 
 173: ifop(r)
 174:     int *r;
 175: {
 176:     register *s;
 177:     struct pxcnt scnt;
 178: 
 179:     ppkw("if");
 180:     ppspac();
 181:     rvalue(r[2], NIL);
 182:     ppspac();
 183:     ppkw("then");
 184:     ppspac();
 185:     s = r[3];
 186:     savecnt(&scnt);
 187:     getcnt();
 188:     if (s != NIL && s[0] == T_BLOCK)
 189:         ppstbl1(s, STAT);
 190:     else {
 191:         ppgoin(STAT);
 192:         statement(s);
 193:         ppgoout(STAT);
 194:     }
 195:     if (r[0] == T_IFEL) {
 196:         setcnt(cntof(&scnt)-nowcnt());
 197:         if (s == NIL || s[0] != T_BLOCK) {
 198:             ppnl();
 199:             indent();
 200:         } else {
 201:             ppstbl2();
 202:             ppspac();
 203:         }
 204:         s = r[4];
 205:         ppkw("else");
 206:         unprint();
 207:         ppspac();
 208:         if (s == NIL)
 209:             goto burp;
 210:         if (s[0] == T_BLOCK)
 211:             ppstbl1(s, STAT);
 212:         else if (s[0] == T_IF || s[0] == T_IFEL)
 213:             ifop(s);
 214:         else {
 215: burp:
 216:             ppgoin(STAT);
 217:             statement(s);
 218:             ppgoout(STAT);
 219:         }
 220:     }
 221:     if (rescnt(&scnt))
 222:         getcnt();
 223:     if (r[4] != NIL)
 224:         unprint();
 225:     if (s != NIL && s[0] == T_BLOCK)
 226:         ppstbl2();
 227: }
 228: 
 229: whilop(r)
 230:     int *r;
 231: {
 232:     struct pxcnt scnt;
 233: 
 234:     ppkw("while");
 235:     ppspac();
 236:     rvalue(r[2], NIL);
 237:     savecnt(&scnt);
 238:     getcnt();
 239:     ppstdo(r[3], STAT);
 240:     if (rescnt(&scnt))
 241:         getcnt();
 242: }
 243: 
 244: repop(r)
 245:     int *r;
 246: {
 247:     struct pxcnt scnt;
 248: 
 249:     ppkw("repeat");
 250:     ppgoin(STAT);
 251:     savecnt(&scnt);
 252:     getcnt();
 253:     statlist(r[2]);
 254:     ppgoout(DECL);
 255:     ppnl();
 256:     indent();
 257:     ppkw("until");
 258:     ppspac();
 259:     rvalue(r[3], NIL);
 260:     ppgoin(DECL);
 261:     ppgoout(STAT);
 262:     if (rescnt(&scnt))
 263:         getcnt();
 264: }
 265: 
 266: ppstbl(r, m)
 267: int *r;
 268: {
 269:     ppstbl1(r, m);
 270:     ppstbl2();
 271: }
 272: 
 273: ppstbl1(r, m)
 274: int *r;
 275: {
 276:     ppkw("begin");
 277:     ppgoin(m);
 278:     statlist(r[2]);
 279:     ppgoout(m);
 280: }
 281: 
 282: ppstbl2()
 283: {
 284:     ppnl();
 285:     indent();
 286:     ppkw("end");
 287: }
 288: 
 289: ppstdo(r, l)
 290: int *r;
 291: {
 292:     register *s;
 293: 
 294:     ppspac();
 295:     ppkw("do");
 296:     ppspac();
 297:     s = r;
 298:     if (s != NIL && s[0] == T_BLOCK)
 299:         ppstbl(s, l);
 300:     else {
 301:         ppgoin(l);
 302:         statement(s);
 303:         ppgoout(l);
 304:     }
 305: }
 306: 
 307: asrtop(s)
 308:     int *s;
 309: {
 310: 
 311:     ppkw("assert");
 312:     ppspac();
 313:     rvalue(s[2], NIL);
 314: }

Defined functions

asgnop defined in line 145; used 2 times
asrtop defined in line 307; used 1 times
forop defined in line 154; used 1 times
  • in line 89
ifop defined in line 173; used 2 times
ppstbl defined in line 266; used 2 times
ppstbl1 defined in line 273; used 4 times
ppstbl2 defined in line 282; used 4 times
ppstdo defined in line 289; used 3 times
repop defined in line 244; used 1 times
  • in line 83
statement defined in line 34; used 7 times
statlist defined in line 15; used 3 times
whilop defined in line 229; used 1 times
  • in line 78
withop defined in line 124; used 1 times

Defined variables

cnts defined in line 13; never used
cntstat defined in line 12; used 4 times
Last modified: 1986-05-31
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