1 /* $RCSfile: walk.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:31 $
3 * Copyright (c) 1991, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
17 bool realexit = FALSE;
18 bool saw_getline = FALSE;
19 bool subretnum = FALSE;
21 bool saw_argv0 = FALSE;
28 STR *curargs = Nullstr;
31 walk(useval,level,node,numericptr,minprec)
36 int minprec; /* minimum precedence without parens */
50 int prec = P_MAX; /* assume no parens needed */
57 type = ops[node].ival;
64 while (isalpha(*namelist)) {
65 for (d = tokenbuf,s=namelist;
66 isalpha(*s) || isdigit(*s) || *s == '_';
69 while (*s && !isalpha(*s)) s++;
71 nameary[++arymax] = savestr(tokenbuf);
78 str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
79 if (do_split && need_entire && !absmaxfld)
80 split_to_array = TRUE;
81 if (do_split && split_to_array)
82 set_array_base = TRUE;
84 str_cat(str,"$[ = 1;\t\t\t# set array base to 1\n");
86 if (fswitch && !const_FS)
88 if (saw_FS > 1 || saw_RS)
90 if (saw_ORS && need_entire)
93 str_cat(str,"$FS = '");
94 if (strchr("*+?.[]()|^$\\",fswitch))
96 sprintf(tokenbuf,"%c",fswitch);
97 str_cat(str,tokenbuf);
98 str_cat(str,"';\t\t# field separator from -F switch\n");
100 else if (saw_FS && !const_FS) {
101 str_cat(str,"$FS = ' ';\t\t# set field separator\n");
104 str_cat(str,"$, = ' ';\t\t# set output field separator\n");
107 str_cat(str,"$\\ = \"\\n\";\t\t# set output record separator\n");
110 str_cat(str,"$ARGV0 = $0;\t\t# remember what we ran as\n");
112 if (str->str_cur > 20)
114 if (ops[node+2].ival) {
115 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
119 fstr = walk(0,level+1,ops[node+3].ival,&numarg,P_MIN);
120 if (*fstr->str_ptr) {
122 str_cat(str,"line: ");
123 str_cat(str,"while (<>) {\n");
125 if (saw_FS && !const_FS)
128 str_cat(str,"chop;\t# strip record separator\n");
132 emit_split(str,level);
138 str_cat(str,"continue {\n $FNRbase = $. if eof;\n}\n");
141 str_cat(str,"while (<>) { } # (no line actions)\n");
142 if (ops[node+4].ival) {
146 str_scat(str,fstr=walk(0,level,ops[node+4].ival,&numarg,P_MIN));
151 str_cat(str,"exit $ExitValue;\n");
157 for (len = 0; len < 4; len++) {
158 if (saw_getline & (1 << len)) {
159 sprintf(tokenbuf,"\nsub Getline%d {\n",len);
160 str_cat(str, tokenbuf);
163 str_cat(str," &Pick('',@_);\n");
165 str_cat(str," ($fh) = @_;\n");
169 str_cat(str," $FNRbase = $. if eof;\n");
172 str_cat(str," local($_);\n");
175 " if ($getline_ok = (($_ = <$fh>) ne ''))");
178 " if ($getline_ok = (($_ = <>) ne ''))");
179 str_cat(str, " {\n");
185 str_cat(str,"chop;\t# strip record separator\n");
188 if (do_split && !(len & 1)) {
190 emit_split(str,level);
195 str_cat(str,"}\n $_;\n}\n");
200 if (do_fancy_opens) {
203 local($mode,$name,$pipe) = @_;\n\
205 open($name,$mode.$name.$pipe) unless $opened{$name}++;\n\
211 str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
212 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
215 str_scat(str,fstr=walk(0,level,ops[node+3].ival,&numarg,P_MIN));
223 str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
225 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
233 tmpstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN);
234 /* translate \nnn to [\nnn] */
235 for (s = tmpstr->str_ptr, d = tokenbuf; *s; s++, d++) {
236 if (*s == '\\' && isdigit(s[1]) && isdigit(s[2]) && isdigit(s[3])){
248 for (d=tokenbuf; *d; d++)
250 str_cat(str,tokenbuf);
257 str = walk(0,level,oper1(OPRINT,0),&numarg,P_MIN);
259 str_scat(str,fstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN));
264 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
265 if (*tmpstr->str_ptr) {
268 str_scat(str,tmpstr);
269 str_cat(str,") {\n");
271 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
278 str = walk(0,level,ops[node+2].ival,&numarg,P_MIN);
285 str_scat(str,fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
291 str = walk(1,level,ops[node+1].ival,&numarg,prec);
293 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
295 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
300 str = walk(1,level,ops[node+1].ival,&numarg,prec);
302 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
304 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
311 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec));
316 str = walk(1,level,ops[node+1].ival,&numarg,prec);
318 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
321 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
327 str_scat(str,fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
334 str = walk(1,level,ops[node+1].ival,&numarg,prec);
337 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
339 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
344 str = walk(1,level,ops[node+1].ival,&numarg,prec);
347 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
349 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
356 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec));
362 str = walk(1,level,ops[node+2].ival,&numarg,prec+1);
364 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
365 tmp2str = walk(1,level,ops[node+3].ival,&numarg,prec+1);
368 (!numarg && (*tmp2str->str_ptr == '"' || *tmp2str->str_ptr == '\''))) {
371 str_set(tmpstr,"eq");
372 else if (strEQ(t,"!="))
373 str_set(tmpstr,"ne");
374 else if (strEQ(t,"<"))
375 str_set(tmpstr,"lt");
376 else if (strEQ(t,"<="))
377 str_set(tmpstr,"le");
378 else if (strEQ(t,">"))
379 str_set(tmpstr,"gt");
380 else if (strEQ(t,">="))
381 str_set(tmpstr,"ge");
382 if (!strchr(tmpstr->str_ptr,'\'') && !strchr(tmpstr->str_ptr,'"') &&
383 !strchr(tmp2str->str_ptr,'\'') && !strchr(tmp2str->str_ptr,'"') )
387 if (numeric & 1) /* numeric is very good guess */
395 str_scat(str,tmpstr);
398 str_scat(str,tmp2str);
405 str_scat(str,fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
412 str = walk(1,level,ops[node+2].ival,&numarg,prec+1);
414 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
415 if (strEQ(tmpstr->str_ptr,"~"))
418 str_scat(str,tmpstr);
422 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
430 fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
437 type = ops[ops[node+1].ival].ival & 255;
438 str = walk(1,level,ops[node+1].ival,&numarg,prec+(type != OCONCAT));
440 type = ops[ops[node+2].ival].ival & 255;
442 fstr=walk(1,level,ops[node+2].ival,&numarg,prec+(type != OCONCAT)));
447 str = walk(0,level,ops[node+2].ival,&numarg,prec+1);
449 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
450 str_scat(str,tmpstr);
451 if (str_len(tmpstr) > 1)
455 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec));
458 if (strEQ(str->str_ptr,"$/ = ''"))
459 str_set(str, "$/ = \"\\n\\n\"");
463 str = walk(1,level,ops[node+1].ival,&numarg,prec);
465 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
471 str = walk(1,level,ops[node+1].ival,&numarg,prec);
473 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
479 str = walk(1,level,ops[node+1].ival,&numarg,prec);
481 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
487 str = walk(1,level,ops[node+1].ival,&numarg,prec);
489 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
495 str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
497 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec));
503 str = walk(1,level,ops[node+1].ival,&numarg,prec);
505 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
511 str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
517 str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
525 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec+1));
533 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec+1));
541 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec));
552 fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
562 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
563 if (!*fstr->str_ptr) {
565 len = 2; /* a legal fiction */
572 tmpstr=walk(1,level,ops[node+3].ival,&numarg,P_MIN);
573 fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN);
574 if (!do_fancy_opens) {
576 if (*t == '"' || *t == '\'')
577 t = cpytill(tokenbuf,t+1,*t);
579 fatal("Internal error: OGETLINE %s", t);
581 s = savestr(tokenbuf);
582 for (t = tokenbuf; *t; t++) {
586 if (!isalpha(*t) && !isdigit(*t))
589 if (!strchr(tokenbuf,'_'))
591 tmp3str = hfetch(symtab,tokenbuf);
594 str_cat(opens,"open(");
595 str_cat(opens,tokenbuf);
599 str_cat(opens,tmpstr->str_ptr+1);
601 if (*fstr->str_ptr == '|')
604 if (*fstr->str_ptr == '|')
605 str_cat(opens,") || die 'Cannot pipe from \"");
607 str_cat(opens,") || die 'Cannot open file \"");
609 str_cat(opens,"'.\"");
612 str_cat(opens,"\".'");
613 str_cat(opens,"\".';\n");
614 hstore(symtab,tokenbuf,str_make("x"));
619 str_cat(tmpstr,tokenbuf);
622 if (*fstr->str_ptr == '|')
623 str_cat(tmpstr,", '|'");
627 tmpstr = str_make("");
628 sprintf(tokenbuf," = &Getline%d(%s)",len,tmpstr->str_ptr);
629 str_cat(str,tokenbuf);
632 str_cat(str,",$getline_ok)");
633 saw_getline |= 1 << len;
637 str_set(str,"sprintf(");
638 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
644 str_set(str,"substr(");
645 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_COMMA+1));
648 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_COMMA+1));
652 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,P_COMMA+1));
656 str_cat(str,"999999");
661 str_set(str,ops[node+1].cval);
667 tmpstr = walk(1,level,ops[node+2].ival,&numarg,P_MIN);
672 str_scat(str,tmpstr);
673 str_cat(str," = split(");
675 fstr = walk(1,level,ops[node+3].ival,&numarg,P_COMMA+1);
676 if (str_len(fstr) == 3 && *fstr->str_ptr == '\'') {
677 i = fstr->str_ptr[1] & 127;
678 if (strchr("*+?.[]()|^$\\",i))
679 sprintf(tokenbuf,"/\\%c/",i);
681 sprintf(tokenbuf,"' '");
683 sprintf(tokenbuf,"/%c/",i);
684 str_cat(str,tokenbuf);
691 sprintf(tokenbuf,"/[%c\\n]/",const_FS);
692 str_cat(str,tokenbuf);
701 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_COMMA+1));
711 str_set(str,"index(");
712 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_COMMA+1));
715 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_COMMA+1));
723 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MATCH+1));
726 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MATCH+1));
728 str_cat(str," && ($RLENGTH = length($&), $RSTART = length($`)+1)");
734 fstr=walk(1,level-1,ops[node+2].ival,&numarg,P_MIN);
735 curargs = str_new(0);
736 str_sset(curargs,fstr);
737 str_cat(curargs,",");
738 tmp2str=walk(1,level,ops[node+5].ival,&numarg,P_MIN);
744 t = tmp2str->str_ptr;
745 while (t = instr(t,"return "))
749 for (t = s+7; *t; t++) {
750 if (*t == ';' || *t == '}')
755 tmp2str->str_cur -= 7;
761 str_scat(str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
765 str_cat(str,"local(");
767 str_cat(str,") = @_;");
770 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,P_MIN));
773 str_scat(str,fstr=walk(1,level,ops[node+4].ival,&numarg,P_MIN));
776 str_scat(str,tmp2str);
784 tmp2str = str_new(0);
786 str_set(tmp2str,"1");
787 hstore(symtab,tmpstr->str_ptr,tmp2str);
794 str_cat(str,"return ");
795 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_UNI+1));
801 str_cat(str,"return");
806 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
809 tmpstr = hfetch(symtab,str->str_ptr+3);
810 if (tmpstr && tmpstr->str_ptr)
811 numeric |= atoi(tmpstr->str_ptr);
812 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN));
826 tmpstr = walk(1,level,ops[node+3].ival,&numarg,P_MATCH+1);
827 if (strNE(tmpstr->str_ptr,"$_")) {
828 str_cat(tmpstr, " =~ s");
832 str_set(tmpstr, "s");
835 str_set(tmpstr, "s");
836 type = ops[ops[node+2].ival].ival;
839 tmp3str = str_new(0);
841 tmp2str=walk(1,level,ops[ops[node+2].ival+1].ival,&numarg,P_MIN);
842 for (t = tmp2str->str_ptr, d=tokenbuf; *t; d++,t++) {
850 str_set(tmp2str,tokenbuf);
853 tmp2str=walk(1,level,ops[node+2].ival,&numarg,P_MIN);
854 str_set(tmp3str,"($s_ = '\"'.(");
855 str_scat(tmp3str,tmp2str);
856 str_cat(tmp3str,").'\"') =~ s/&/\\$&/g, ");
857 str_set(tmp2str,"eval $s_");
858 s = (*s == 'g' ? "ge" : "e");
861 type = ops[ops[node+1].ival].ival;
864 fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN);
865 if (type == OREGEX) {
868 str_scat(str,tmp3str);
869 str_scat(str,tmpstr);
871 str_scat(str,tmp2str);
875 else if ((type == OFLD && !split_to_array) || (type == OVAR && len == 1)) {
878 str_scat(str,tmp3str);
879 str_scat(str,tmpstr);
883 str_scat(str,tmp2str);
891 str_cat(str,"$s = ");
894 str_scat(str,tmp3str);
895 str_scat(str,tmpstr);
897 str_scat(str,tmp2str);
910 str = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
914 tmpstr = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
916 for (t = tmpstr->str_ptr, d=tokenbuf; *t; d++,t++) {
919 else if (*t == '\\') {
923 case '\\': case '"': case 'n': case 't': case '$':
925 default: /* hide this from perl */
934 str_cat(str,tokenbuf);
941 str_set(str,"defined $");
945 str_set(str,"delete $");
955 str_scat(str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
957 tmp2str = hfetch(symtab,tmpstr->str_ptr);
958 if (tmp2str && atoi(tmp2str->str_ptr))
960 if (strEQ(str->str_ptr,"$FNR")) {
963 str_set(str,"($.-$FNRbase)");
965 else if (strEQ(str->str_ptr,"$NR")) {
969 else if (strEQ(str->str_ptr,"$NF")) {
971 str_set(str,"$#Fld");
973 else if (strEQ(str->str_ptr,"$0"))
975 else if (strEQ(str->str_ptr,"$ARGC"))
976 str_set(str,"($#ARGV+1)");
981 sprintf(tokenbuf,"$%s,",tmpstr->str_ptr);
982 ??? if (instr(curargs->str_ptr,tokenbuf))
983 str_cat(str,"\377"); /* can't translate yet */
986 str_cat(tmpstr,"[]");
987 tmp2str = hfetch(symtab,tmpstr->str_ptr);
988 if (tmp2str && atoi(tmp2str->str_ptr))
992 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN));
994 if (strEQ(str->str_ptr,"$ARGV[0")) {
995 str_set(str,"$ARGV0");
999 if (tmp2str && atoi(tmp2str->str_ptr))
1000 strcpy(tokenbuf,"]");
1002 strcpy(tokenbuf,"}");
1004 str_cat(str,tokenbuf);
1011 if (split_to_array) {
1012 str_set(str,"$Fld");
1014 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
1019 i = atoi(walk(1,level,ops[node+1].ival,&numarg,P_MIN)->str_ptr);
1021 sprintf(tokenbuf,"$%s",nameary[i]);
1023 sprintf(tokenbuf,"$Fld%d",i);
1024 str_set(str,tokenbuf);
1029 str_set(str,"$Fld[");
1030 i = ops[node+1].ival;
1031 if ((ops[i].ival & 255) == OPAREN)
1033 tmpstr=walk(1,level,i,&numarg,P_MIN);
1034 str_scat(str,tmpstr);
1053 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
1054 for (s = tmpstr->str_ptr; *s && *s != '\n'; s++)
1056 str_scat(str,tmpstr);
1062 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
1063 for (s = tmpstr->str_ptr; *s && *s != '\n'; s++)
1065 str_scat(str,tmpstr);
1071 str = walk(1,level,ops[node+1].ival,&numarg,prec);
1073 str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN));
1075 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
1084 str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
1085 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
1091 str_scat(str,fstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN));
1094 tmpstr = walk(0,level,ops[node+2].ival,&numarg,P_MIN);
1095 if (*tmpstr->str_ptr == ';') {
1097 str_cat(str,tmpstr->str_ptr+1);
1104 str = str_make("close(");
1105 tmpstr = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
1106 if (!do_fancy_opens) {
1107 t = tmpstr->str_ptr;
1108 if (*t == '"' || *t == '\'')
1109 t = cpytill(tokenbuf,t+1,*t);
1111 fatal("Internal error: OCLOSE %s",t);
1112 s = savestr(tokenbuf);
1113 for (t = tokenbuf; *t; t++) {
1117 if (!isalpha(*t) && !isdigit(*t))
1120 if (!strchr(tokenbuf,'_'))
1124 str_set(str,"close ");
1125 str_cat(str,tokenbuf);
1128 sprintf(tokenbuf,"delete $opened{%s} && close(%s)",
1129 tmpstr->str_ptr, tmpstr->str_ptr);
1131 str_set(str,tokenbuf);
1136 lparen = ""; /* set to parens if necessary */
1139 if (len == 3) { /* output redirection */
1140 tmpstr = walk(1,level,ops[node+3].ival,&numarg,P_MIN);
1141 tmp2str = walk(1,level,ops[node+2].ival,&numarg,P_MIN);
1142 if (!do_fancy_opens) {
1143 t = tmpstr->str_ptr;
1144 if (*t == '"' || *t == '\'')
1145 t = cpytill(tokenbuf,t+1,*t);
1147 fatal("Internal error: OPRINT");
1149 s = savestr(tokenbuf);
1150 for (t = tokenbuf; *t; t++) {
1154 if (!isalpha(*t) && !isdigit(*t))
1157 if (!strchr(tokenbuf,'_'))
1159 tmp3str = hfetch(symtab,tokenbuf);
1161 str_cat(opens,"open(");
1162 str_cat(opens,tokenbuf);
1163 str_cat(opens,", ");
1166 str_scat(opens,tmp2str);
1167 str_cat(opens,tmpstr->str_ptr+1);
1168 if (*tmp2str->str_ptr == '|')
1169 str_cat(opens,") || die 'Cannot pipe to \"");
1171 str_cat(opens,") || die 'Cannot create file \"");
1173 str_cat(opens,"'.\"");
1176 str_cat(opens,"\".'");
1177 str_cat(opens,"\".';\n");
1178 hstore(symtab,tokenbuf,str_make("x"));
1186 sprintf(tokenbuf,"&Pick('%s', %s) &&\n",
1187 tmp2str->str_ptr, tmpstr->str_ptr);
1188 str_cat(str,tokenbuf);
1190 strcpy(tokenbuf,"$fh");
1198 strcpy(tokenbuf,"");
1199 str_cat(str,lparen); /* may be null */
1200 if (type == OPRINTF)
1201 str_cat(str,"printf");
1203 str_cat(str,"print");
1205 if (len == 3 || do_fancy_opens) {
1210 str_cat(str,tokenbuf);
1212 tmpstr = walk(1+(type==OPRINT),level,ops[node+1].ival,&numarg,P_MIN);
1213 if (!*tmpstr->str_ptr && lval_field) {
1214 t = saw_OFS ? "$," : "' '";
1215 if (split_to_array) {
1216 sprintf(tokenbuf,"join(%s,@Fld)",t);
1217 str_cat(tmpstr,tokenbuf);
1220 for (i = 1; i < maxfld; i++) {
1222 sprintf(tokenbuf,"$%s, ",nameary[i]);
1224 sprintf(tokenbuf,"$Fld%d, ",i);
1225 str_cat(tmpstr,tokenbuf);
1227 if (maxfld <= arymax)
1228 sprintf(tokenbuf,"$%s",nameary[maxfld]);
1230 sprintf(tokenbuf,"$Fld%d",maxfld);
1231 str_cat(tmpstr,tokenbuf);
1234 if (*tmpstr->str_ptr) {
1236 if (!saw_fh && *tmpstr->str_ptr == '(') {
1238 str_scat(str,tmpstr);
1242 str_scat(str,tmpstr);
1247 str_cat(str,rparen); /* may be null */
1251 str = str_make("rand(1)");
1254 str = str_make("srand(");
1257 str = str_make("atan2(");
1260 str = str_make("sin(");
1263 str = str_make("cos(");
1266 str = str_make("system(");
1269 str = str_make("length(");
1272 str = str_make("log(");
1275 str = str_make("exp(");
1278 str = str_make("sqrt(");
1281 str = str_make("int(");
1285 tmpstr = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
1287 tmpstr = str_new(0);;
1288 if (!tmpstr->str_ptr || !*tmpstr->str_ptr) {
1290 t = saw_OFS ? "$," : "' '";
1291 if (split_to_array) {
1292 sprintf(tokenbuf,"join(%s,@Fld)",t);
1293 str_cat(tmpstr,tokenbuf);
1296 sprintf(tokenbuf,"join(%s, ",t);
1297 str_cat(tmpstr,tokenbuf);
1298 for (i = 1; i < maxfld; i++) {
1300 sprintf(tokenbuf,"$%s,",nameary[i]);
1302 sprintf(tokenbuf,"$Fld%d,",i);
1303 str_cat(tmpstr,tokenbuf);
1305 if (maxfld <= arymax)
1306 sprintf(tokenbuf,"$%s)",nameary[maxfld]);
1308 sprintf(tokenbuf,"$Fld%d)",maxfld);
1309 str_cat(tmpstr,tokenbuf);
1313 str_cat(tmpstr,"$_");
1315 if (strEQ(tmpstr->str_ptr,"$_")) {
1316 if (type == OLENGTH && !do_chop) {
1317 str = str_make("(length(");
1318 str_cat(tmpstr,") - 1");
1321 str_scat(str,tmpstr);
1327 str_set(str,"last");
1331 str_set(str,"next line");
1337 str_set(str,"exit");
1342 fstr=walk(1,level,ops[node+1].ival,&numarg,prec+1));
1348 str_set(str,"$ExitValue = ");
1351 fstr=walk(1,level,ops[node+1].ival,&numarg,P_ASSIGN));
1355 str_cat(str,"last line");
1360 str_set(str,"next");
1366 str_set(str,"if (");
1367 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
1370 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
1373 i = ops[node+3].ival;
1375 if ((ops[i].ival & 255) == OBLOCK) {
1378 if ((ops[i].ival & 255) != OIF)
1387 str_scat(str,fstr=walk(0,level,i,&numarg,P_MIN));
1391 str_cat(str,"else ");
1392 str_scat(str,fstr=walk(0,level,ops[node+3].ival,&numarg,P_MIN));
1399 str_set(str,"while (");
1400 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
1403 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
1409 str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
1411 if (str->str_ptr[str->str_cur - 1] == '\n')
1413 str_cat(str," while (");
1414 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
1420 str_set(str,"for (");
1421 str_scat(str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
1424 t = s = tmpstr->str_ptr;
1425 while (isalpha(*t) || isdigit(*t) || *t == '$' || *t == '_')
1432 fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN);
1433 if (i && (t = strchr(fstr->str_ptr,0377))) {
1434 if (strnEQ(fstr->str_ptr,s,i))
1441 str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,P_MIN));
1444 str_scat(str,fstr=walk(0,level,ops[node+4].ival,&numarg,P_MIN));
1448 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
1449 d = strchr(tmpstr->str_ptr,'$');
1451 fatal("Illegal for loop: %s",tmpstr->str_ptr);
1456 fatal("Illegal for loop: %s",d);
1458 for (t = s; i = *t; t++) {
1460 if (i == '}' || i == ']')
1468 tmp2str = hfetch(symtab,str->str_ptr);
1469 if (tmp2str && atoi(tmp2str->str_ptr)) {
1471 "foreach %s ($[ .. $#%s) ",
1477 "foreach %s (keys %%%s) ",
1481 str_set(str,tokenbuf);
1482 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
1489 if (len >= 2 && ops[node+2].ival) {
1490 str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
1493 fixtab(str,++level);
1494 str_scat(str,fstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN));
1497 fixtab(str,--level);
1501 str_scat(str,fstr=walk(0,level,ops[node+3].ival,&numarg,P_MIN));
1509 fatal("Garbage length in walk");
1510 str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
1511 for (i = 2; i<= len; i++) {
1512 str_scat(str,fstr=walk(0,level,ops[node+i].ival,&numarg,P_MIN));
1524 if (useval && prec < minprec) { /* need parens? */
1525 fstr = str_new(str->str_cur+2);
1526 str_nset(fstr,"(",1);
1528 str_ncat(fstr,")",1);
1533 *numericptr = numeric;
1536 printf("%3d %5d %15s %d %4d ",level,node,opname[type],len,str->str_cur);
1537 for (t = str->str_ptr; *t && t - str->str_ptr < 40; t++)
1540 else if (*t == '\t')
1568 /* strip trailing white space */
1570 s = str->str_ptr+str->str_cur - 1;
1571 while (s >= str->str_ptr && (*s == ' ' || *s == '\t' || *s == '\n'))
1574 str->str_cur = s + 1 - str->str_ptr;
1575 if (s >= str->str_ptr && *s != '\n')
1586 s = str->str_ptr+str->str_cur - 1;
1587 while (s >= str->str_ptr && (*s == ' ' || *s == '\t' || *s == '\n'))
1589 if (s >= str->str_ptr && *s != ';' && *s != '}')
1593 emit_split(str,level)
1600 str_cat(str,"@Fld");
1603 for (i = 1; i < maxfld; i++) {
1605 sprintf(tokenbuf,"$%s,",nameary[i]);
1607 sprintf(tokenbuf,"$Fld%d,",i);
1608 str_cat(str,tokenbuf);
1610 if (maxfld <= arymax)
1611 sprintf(tokenbuf,"$%s)",nameary[maxfld]);
1613 sprintf(tokenbuf,"$Fld%d)",maxfld);
1614 str_cat(str,tokenbuf);
1617 sprintf(tokenbuf," = split(/[%c\\n]/, $_, 9999);\n",const_FS);
1618 str_cat(str,tokenbuf);
1621 str_cat(str," = split($FS, $_, 9999);\n");
1623 str_cat(str," = split(' ', $_, 9999);\n");
1627 prewalk(numit,level,node,numericptr)
1639 int numeric = FALSE;
1647 type = ops[node].ival;
1652 prewalk(0,level,ops[node+1].ival,&numarg);
1653 if (ops[node+2].ival) {
1654 prewalk(0,level,ops[node+2].ival,&numarg);
1657 prewalk(0,level,ops[node+3].ival,&numarg);
1659 if (ops[node+3].ival) {
1660 prewalk(0,level,ops[node+4].ival,&numarg);
1664 prewalk(0,level,ops[node+1].ival,&numarg);
1665 prewalk(0,level,ops[node+2].ival,&numarg);
1667 prewalk(0,level,ops[node+3].ival,&numarg);
1671 prewalk(1,level,ops[node+1].ival,&numarg);
1672 prewalk(1,level,ops[node+2].ival,&numarg);
1677 prewalk(0,level,ops[node+1].ival,&numarg);
1681 prewalk(0,level,ops[node+1].ival,&numarg);
1684 i = prewalk(0,level,ops[node+1].ival,&numarg);
1687 prewalk(0,level,ops[node+2].ival,&numarg);
1691 prewalk(0,level,ops[node+2].ival,&numarg);
1696 prewalk(0,level,ops[node+1].ival,&numarg);
1699 prewalk(0,level,ops[node+1].ival,&numarg);
1700 prewalk(0,level,ops[node+2].ival,&numarg);
1703 prewalk(0,level,ops[node+1].ival,&numarg);
1704 prewalk(0,level,ops[node+2].ival,&numarg);
1707 prewalk(0,level,ops[node+1].ival,&numarg);
1710 prewalk(0,level,ops[node+1].ival,&numarg);
1714 prewalk(0,level,ops[node+1].ival,&numarg);
1716 prewalk(0,level,ops[node+2].ival,&numarg);
1719 prewalk(0,level,ops[node+1].ival,&numarg);
1721 prewalk(0,level,ops[node+2].ival,&numarg);
1724 prewalk(0,level,ops[node+1].ival,&numarg);
1728 prewalk(0,level,ops[node+2].ival,&numarg);
1730 prewalk(0,level,ops[node+1].ival,&numarg);
1731 prewalk(0,level,ops[node+3].ival,&numarg);
1736 prewalk(0,level,ops[node+1].ival,&numarg);
1740 prewalk(0,level,ops[node+2].ival,&numarg);
1741 prewalk(0,level,ops[node+1].ival,&numarg);
1742 prewalk(0,level,ops[node+3].ival,&numarg);
1746 prewalk(0,level,ops[node+1].ival,&numarg);
1750 prewalk(0,level,ops[node+1].ival,&numarg);
1751 prewalk(0,level,ops[node+2].ival,&numarg);
1754 prewalk(0,level,ops[node+2].ival,&numarg);
1755 prewalk(0,level,ops[node+1].ival,&numarg);
1756 prewalk(0,level,ops[node+3].ival,&numarg);
1757 if (numarg || strlen(ops[ops[node+1].ival+1].cval) > 1) {
1758 numericize(ops[node+2].ival);
1760 numericize(ops[node+3].ival);
1765 prewalk(1,level,ops[node+1].ival,&numarg);
1766 prewalk(1,level,ops[node+2].ival,&numarg);
1770 prewalk(1,level,ops[node+1].ival,&numarg);
1771 prewalk(1,level,ops[node+2].ival,&numarg);
1775 prewalk(1,level,ops[node+1].ival,&numarg);
1776 prewalk(1,level,ops[node+2].ival,&numarg);
1780 prewalk(1,level,ops[node+1].ival,&numarg);
1781 prewalk(1,level,ops[node+2].ival,&numarg);
1785 prewalk(1,level,ops[node+1].ival,&numarg);
1786 prewalk(1,level,ops[node+2].ival,&numarg);
1790 prewalk(1,level,ops[node+1].ival,&numarg);
1791 prewalk(1,level,ops[node+2].ival,&numarg);
1795 prewalk(1,level,ops[node+1].ival,&numarg);
1799 prewalk(1,level,ops[node+1].ival,&numarg);
1803 prewalk(1,level,ops[node+1].ival,&numarg);
1807 prewalk(1,level,ops[node+1].ival,&numarg);
1811 prewalk(1,level,ops[node+1].ival,&numarg);
1815 prewalk(1,level,ops[node+1].ival,&numarg);
1819 prewalk(0,level,ops[node+1].ival,&numarg);
1825 prewalk(0,level,ops[node+1].ival,&numarg);
1828 prewalk(0,level,ops[node+1].ival,&numarg);
1829 prewalk(1,level,ops[node+2].ival,&numarg);
1831 prewalk(1,level,ops[node+3].ival,&numarg);
1838 prewalk(0,level,ops[node+2].ival,&numarg);
1840 prewalk(0,level,ops[node+3].ival,&numarg);
1841 prewalk(0,level,ops[node+1].ival,&numarg);
1844 prewalk(0,level,ops[node+1].ival,&numarg);
1845 prewalk(0,level,ops[node+2].ival,&numarg);
1849 prewalk(0,level,ops[node+1].ival,&numarg);
1850 prewalk(0,level,ops[node+2].ival,&numarg);
1856 tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
1858 prewalk(0,level,ops[node+2].ival,&numarg);
1859 prewalk(0,level,ops[node+4].ival,&numarg);
1860 prewalk(0,level,ops[node+5].ival,&numarg);
1862 str_cat(tmpstr,"(");
1863 tmp2str = str_new(0);
1864 if (subretnum || numarg)
1865 str_set(tmp2str,"1");
1866 hstore(symtab,tmpstr->str_ptr,tmp2str);
1872 prewalk(0,level,ops[node+1].ival,&numarg);
1878 tmp2str = str_new(0);
1879 str_scat(tmp2str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
1880 fixrargs(tmpstr->str_ptr,ops[node+2].ival,0);
1882 str_cat(tmp2str,"(");
1883 tmpstr = hfetch(symtab,tmp2str->str_ptr);
1884 if (tmpstr && tmpstr->str_ptr)
1885 numeric |= atoi(tmpstr->str_ptr);
1886 prewalk(0,level,ops[node+2].ival,&numarg);
1892 prewalk(0,level,ops[node+3].ival,&numarg);
1893 prewalk(0,level,ops[ops[node+2].ival+1].ival,&numarg);
1894 prewalk(0,level,ops[node+1].ival,&numarg);
1898 prewalk(0,level,ops[node+1].ival,&numarg);
1902 prewalk(0,level,ops[node+1].ival,&numarg);
1908 prewalk(0,level,ops[node+1].ival,&numarg);
1914 prewalk(0,level,ops[node+2].ival,&numarg);
1918 prewalk(0,level,ops[node+1].ival,&numarg);
1921 i = ops[node+1].ival;
1922 prewalk(0,level,i,&numarg);
1935 prewalk(0,level,ops[node+1].ival,&numarg);
1936 prewalk(0,level,ops[node+2].ival,&numarg);
1937 prewalk(0,level,ops[node+3].ival,&numarg);
1942 prewalk(0,level,ops[node+1].ival,&numarg);
1943 prewalk(0,level,ops[node+2].ival,&numarg);
1947 prewalk(0,level,ops[node+1].ival,&numarg);
1949 prewalk(0,level,ops[node+2].ival,&numarg);
1954 prewalk(0,level,ops[node+1].ival,&numarg);
1958 if (len == 3) { /* output redirection */
1959 prewalk(0,level,ops[node+3].ival,&numarg);
1960 prewalk(0,level,ops[node+2].ival,&numarg);
1962 prewalk(0+(type==OPRINT),level,ops[node+1].ival,&numarg);
1988 prewalk(type != OLENGTH && type != OSYSTEM,
1989 level,ops[node+1].ival,&numarg);
1997 prewalk(1,level,ops[node+1].ival,&numarg);
2005 prewalk(0,level,ops[node+1].ival,&numarg);
2006 prewalk(0,level,ops[node+2].ival,&numarg);
2008 prewalk(0,level,ops[node+3].ival,&numarg);
2012 prewalk(0,level,ops[node+1].ival,&numarg);
2013 prewalk(0,level,ops[node+2].ival,&numarg);
2016 prewalk(0,level,ops[node+1].ival,&numarg);
2017 prewalk(0,level,ops[node+2].ival,&numarg);
2018 prewalk(0,level,ops[node+3].ival,&numarg);
2019 prewalk(0,level,ops[node+4].ival,&numarg);
2022 prewalk(0,level,ops[node+2].ival,&numarg);
2023 prewalk(0,level,ops[node+1].ival,&numarg);
2027 prewalk(0,level,ops[node+2].ival,&numarg);
2030 prewalk(0,level,ops[node+1].ival,&numarg);
2037 fatal("Garbage length in prewalk");
2038 prewalk(0,level,ops[node+1].ival,&numarg);
2039 for (i = 2; i<= len; i++) {
2040 prewalk(0,level,ops[node+i].ival,&numarg);
2045 *numericptr = numeric;
2059 type = ops[node].ival;
2062 if (type == OVAR && len == 1) {
2063 tmpstr=walk(0,0,ops[node+1].ival,&numarg,P_MIN);
2064 tmp2str = str_make("1");
2065 hstore(symtab,tmpstr->str_ptr,tmp2str);