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-rw-r--r--contrib/perl5/x2p/walk.c2066
1 files changed, 2066 insertions, 0 deletions
diff --git a/contrib/perl5/x2p/walk.c b/contrib/perl5/x2p/walk.c
new file mode 100644
index 0000000..0b40655
--- /dev/null
+++ b/contrib/perl5/x2p/walk.c
@@ -0,0 +1,2066 @@
+/* $RCSfile: walk.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:31 $
+ *
+ * Copyright (c) 1991-1997, Larry Wall
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Artistic License, as specified in the README file.
+ *
+ * $Log: walk.c,v $
+ */
+
+#include "EXTERN.h"
+#include "a2p.h"
+#include "util.h"
+
+bool exitval = FALSE;
+bool realexit = FALSE;
+bool saw_getline = FALSE;
+bool subretnum = FALSE;
+bool saw_FNR = FALSE;
+bool saw_argv0 = FALSE;
+bool saw_fh = FALSE;
+int maxtmp = 0;
+char *lparen;
+char *rparen;
+char *limit;
+STR *subs;
+STR *curargs = Nullstr;
+
+static void addsemi _(( STR *str ));
+static void emit_split _(( STR *str, int level ));
+static void fixtab _(( STR *str, int lvl ));
+static void numericize _(( int node ));
+static void tab _(( STR *str, int lvl ));
+
+int prewalk _(( int numit, int level, int node, int *numericptr ));
+STR * walk _(( int useval, int level, int node, int *numericptr, int minprec ));
+
+
+STR *
+walk(int useval, int level, register int node, int *numericptr, int minprec)
+
+
+
+
+ /* minimum precedence without parens */
+{
+ register int len;
+ register STR *str;
+ register int type;
+ register int i;
+ register STR *tmpstr;
+ STR *tmp2str;
+ STR *tmp3str;
+ char *t;
+ char *d, *s;
+ int numarg;
+ int numeric = FALSE;
+ STR *fstr;
+ int prec = P_MAX; /* assume no parens needed */
+
+ if (!node) {
+ *numericptr = 0;
+ return str_make("");
+ }
+ type = ops[node].ival;
+ len = type >> 8;
+ type &= 255;
+ switch (type) {
+ case OPROG:
+ arymax = 0;
+ if (namelist) {
+ while (isalpha(*namelist)) {
+ for (d = tokenbuf,s=namelist;
+ isalpha(*s) || isdigit(*s) || *s == '_';
+ *d++ = *s++) ;
+ *d = '\0';
+ while (*s && !isalpha(*s)) s++;
+ namelist = s;
+ nameary[++arymax] = savestr(tokenbuf);
+ }
+ }
+ if (maxfld < arymax)
+ maxfld = arymax;
+ opens = str_new(0);
+ subs = str_new(0);
+ str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ if (do_split && need_entire && !absmaxfld)
+ split_to_array = TRUE;
+ if (do_split && split_to_array)
+ set_array_base = TRUE;
+ if (set_array_base) {
+ str_cat(str,"$[ = 1;\t\t\t# set array base to 1\n");
+ }
+ if (fswitch && !const_FS)
+ const_FS = fswitch;
+ if (saw_FS > 1 || saw_RS)
+ const_FS = 0;
+ if (saw_ORS && need_entire)
+ do_chop = TRUE;
+ if (fswitch) {
+ str_cat(str,"$FS = '");
+ if (strchr("*+?.[]()|^$\\",fswitch))
+ str_cat(str,"\\");
+ sprintf(tokenbuf,"%c",fswitch);
+ str_cat(str,tokenbuf);
+ str_cat(str,"';\t\t# field separator from -F switch\n");
+ }
+ else if (saw_FS && !const_FS) {
+ str_cat(str,"$FS = ' ';\t\t# set field separator\n");
+ }
+ if (saw_OFS) {
+ str_cat(str,"$, = ' ';\t\t# set output field separator\n");
+ }
+ if (saw_ORS) {
+ str_cat(str,"$\\ = \"\\n\";\t\t# set output record separator\n");
+ }
+ if (saw_argv0) {
+ str_cat(str,"$ARGV0 = $0;\t\t# remember what we ran as\n");
+ }
+ if (str->str_cur > 20)
+ str_cat(str,"\n");
+ if (ops[node+2].ival) {
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,"\n\n");
+ }
+ fstr = walk(0,level+1,ops[node+3].ival,&numarg,P_MIN);
+ if (*fstr->str_ptr) {
+ if (saw_line_op)
+ str_cat(str,"line: ");
+ str_cat(str,"while (<>) {\n");
+ tab(str,++level);
+ if (saw_FS && !const_FS)
+ do_chop = TRUE;
+ if (do_chop) {
+ str_cat(str,"chop;\t# strip record separator\n");
+ tab(str,level);
+ }
+ if (do_split)
+ emit_split(str,level);
+ str_scat(str,fstr);
+ str_free(fstr);
+ fixtab(str,--level);
+ str_cat(str,"}\n");
+ if (saw_FNR)
+ str_cat(str,"continue {\n $FNRbase = $. if eof;\n}\n");
+ }
+ else if (old_awk)
+ str_cat(str,"while (<>) { } # (no line actions)\n");
+ if (ops[node+4].ival) {
+ realexit = TRUE;
+ str_cat(str,"\n");
+ tab(str,level);
+ str_scat(str,fstr=walk(0,level,ops[node+4].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,"\n");
+ }
+ if (exitval)
+ str_cat(str,"exit $ExitValue;\n");
+ if (subs->str_ptr) {
+ str_cat(str,"\n");
+ str_scat(str,subs);
+ }
+ if (saw_getline) {
+ for (len = 0; len < 4; len++) {
+ if (saw_getline & (1 << len)) {
+ sprintf(tokenbuf,"\nsub Getline%d {\n",len);
+ str_cat(str, tokenbuf);
+ if (len & 2) {
+ if (do_fancy_opens)
+ str_cat(str," &Pick('',@_);\n");
+ else
+ str_cat(str," ($fh) = @_;\n");
+ }
+ else {
+ if (saw_FNR)
+ str_cat(str," $FNRbase = $. if eof;\n");
+ }
+ if (len & 1)
+ str_cat(str," local($_);\n");
+ if (len & 2)
+ str_cat(str,
+ " if ($getline_ok = (($_ = <$fh>) ne ''))");
+ else
+ str_cat(str,
+ " if ($getline_ok = (($_ = <>) ne ''))");
+ str_cat(str, " {\n");
+ level += 2;
+ tab(str,level);
+ i = 0;
+ if (do_chop) {
+ i++;
+ str_cat(str,"chop;\t# strip record separator\n");
+ tab(str,level);
+ }
+ if (do_split && !(len & 1)) {
+ i++;
+ emit_split(str,level);
+ }
+ if (!i)
+ str_cat(str,";\n");
+ fixtab(str,--level);
+ str_cat(str,"}\n $_;\n}\n");
+ --level;
+ }
+ }
+ }
+ if (do_fancy_opens) {
+ str_cat(str,"\n\
+sub Pick {\n\
+ local($mode,$name,$pipe) = @_;\n\
+ $fh = $name;\n\
+ open($name,$mode.$name.$pipe) unless $opened{$name}++;\n\
+}\n\
+");
+ }
+ break;
+ case OHUNKS:
+ str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ if (len == 3) {
+ str_scat(str,fstr=walk(0,level,ops[node+3].ival,&numarg,P_MIN));
+ str_free(fstr);
+ }
+ else {
+ }
+ break;
+ case ORANGE:
+ prec = P_DOTDOT;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
+ str_cat(str," .. ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ break;
+ case OPAT:
+ goto def;
+ case OREGEX:
+ str = str_new(0);
+ str_set(str,"/");
+ tmpstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ /* translate \nnn to [\nnn] */
+ for (s = tmpstr->str_ptr, d = tokenbuf; *s; s++, d++) {
+ if (*s == '\\' && isdigit(s[1]) && isdigit(s[2]) && isdigit(s[3])){
+ *d++ = '[';
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s++;
+ *d++ = *s;
+ *d = ']';
+ }
+ else
+ *d = *s;
+ }
+ *d = '\0';
+ for (d=tokenbuf; *d; d++)
+ *d += 128;
+ str_cat(str,tokenbuf);
+ str_free(tmpstr);
+ str_cat(str,"/");
+ break;
+ case OHUNK:
+ if (len == 1) {
+ str = str_new(0);
+ str = walk(0,level,oper1(OPRINT,0),&numarg,P_MIN);
+ str_cat(str," if ");
+ str_scat(str,fstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,";");
+ }
+ else {
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ if (*tmpstr->str_ptr) {
+ str = str_new(0);
+ str_set(str,"if (");
+ str_scat(str,tmpstr);
+ str_cat(str,") {\n");
+ tab(str,++level);
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ fixtab(str,--level);
+ str_cat(str,"}\n");
+ tab(str,level);
+ }
+ else {
+ str = walk(0,level,ops[node+2].ival,&numarg,P_MIN);
+ }
+ }
+ break;
+ case OPPAREN:
+ str = str_new(0);
+ str_set(str,"(");
+ str_scat(str,fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,")");
+ break;
+ case OPANDAND:
+ prec = P_ANDAND;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," && ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
+ str_free(fstr);
+ break;
+ case OPOROR:
+ prec = P_OROR;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," || ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
+ str_free(fstr);
+ break;
+ case OPNOT:
+ prec = P_UNARY;
+ str = str_new(0);
+ str_set(str,"!");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec));
+ str_free(fstr);
+ break;
+ case OCOND:
+ prec = P_COND;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," ? ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ str_cat(str," : ");
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
+ str_free(fstr);
+ break;
+ case OCPAREN:
+ str = str_new(0);
+ str_set(str,"(");
+ str_scat(str,fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ numeric |= numarg;
+ str_cat(str,")");
+ break;
+ case OCANDAND:
+ prec = P_ANDAND;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ numeric = 1;
+ str_cat(str," && ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
+ str_free(fstr);
+ break;
+ case OCOROR:
+ prec = P_OROR;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ numeric = 1;
+ str_cat(str," || ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
+ str_free(fstr);
+ break;
+ case OCNOT:
+ prec = P_UNARY;
+ str = str_new(0);
+ str_set(str,"!");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case ORELOP:
+ prec = P_REL;
+ str = walk(1,level,ops[node+2].ival,&numarg,prec+1);
+ numeric |= numarg;
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ tmp2str = walk(1,level,ops[node+3].ival,&numarg,prec+1);
+ numeric |= numarg;
+ if (!numeric ||
+ (!numarg && (*tmp2str->str_ptr == '"' || *tmp2str->str_ptr == '\''))) {
+ t = tmpstr->str_ptr;
+ if (strEQ(t,"=="))
+ str_set(tmpstr,"eq");
+ else if (strEQ(t,"!="))
+ str_set(tmpstr,"ne");
+ else if (strEQ(t,"<"))
+ str_set(tmpstr,"lt");
+ else if (strEQ(t,"<="))
+ str_set(tmpstr,"le");
+ else if (strEQ(t,">"))
+ str_set(tmpstr,"gt");
+ else if (strEQ(t,">="))
+ str_set(tmpstr,"ge");
+ if (!strchr(tmpstr->str_ptr,'\'') && !strchr(tmpstr->str_ptr,'"') &&
+ !strchr(tmp2str->str_ptr,'\'') && !strchr(tmp2str->str_ptr,'"') )
+ numeric |= 2;
+ }
+ if (numeric & 2) {
+ if (numeric & 1) /* numeric is very good guess */
+ str_cat(str," ");
+ else
+ str_cat(str,"\377");
+ numeric = 1;
+ }
+ else
+ str_cat(str," ");
+ str_scat(str,tmpstr);
+ str_free(tmpstr);
+ str_cat(str," ");
+ str_scat(str,tmp2str);
+ str_free(tmp2str);
+ numeric = 1;
+ break;
+ case ORPAREN:
+ str = str_new(0);
+ str_set(str,"(");
+ str_scat(str,fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ numeric |= numarg;
+ str_cat(str,")");
+ break;
+ case OMATCHOP:
+ prec = P_MATCH;
+ str = walk(1,level,ops[node+2].ival,&numarg,prec+1);
+ str_cat(str," ");
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ if (strEQ(tmpstr->str_ptr,"~"))
+ str_cat(str,"=~");
+ else {
+ str_scat(str,tmpstr);
+ str_free(tmpstr);
+ }
+ str_cat(str," ");
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OMPAREN:
+ str = str_new(0);
+ str_set(str,"(");
+ str_scat(str,
+ fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ numeric |= numarg;
+ str_cat(str,")");
+ break;
+ case OCONCAT:
+ prec = P_ADD;
+ type = ops[ops[node+1].ival].ival & 255;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec+(type != OCONCAT));
+ str_cat(str," . ");
+ type = ops[ops[node+2].ival].ival & 255;
+ str_scat(str,
+ fstr=walk(1,level,ops[node+2].ival,&numarg,prec+(type != OCONCAT)));
+ str_free(fstr);
+ break;
+ case OASSIGN:
+ prec = P_ASSIGN;
+ str = walk(0,level,ops[node+2].ival,&numarg,prec+1);
+ str_cat(str," ");
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ str_scat(str,tmpstr);
+ if (str_len(tmpstr) > 1)
+ numeric = 1;
+ str_free(tmpstr);
+ str_cat(str," ");
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec));
+ str_free(fstr);
+ numeric |= numarg;
+ if (strEQ(str->str_ptr,"$/ = ''"))
+ str_set(str, "$/ = \"\\n\\n\"");
+ break;
+ case OADD:
+ prec = P_ADD;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," + ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OSUBTRACT:
+ prec = P_ADD;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," - ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OMULT:
+ prec = P_MUL;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," * ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case ODIV:
+ prec = P_MUL;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," / ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OPOW:
+ prec = P_POW;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
+ str_cat(str," ** ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OMOD:
+ prec = P_MUL;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str," % ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OPOSTINCR:
+ prec = P_AUTO;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
+ str_cat(str,"++");
+ numeric = 1;
+ break;
+ case OPOSTDECR:
+ prec = P_AUTO;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec+1);
+ str_cat(str,"--");
+ numeric = 1;
+ break;
+ case OPREINCR:
+ prec = P_AUTO;
+ str = str_new(0);
+ str_set(str,"++");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OPREDECR:
+ prec = P_AUTO;
+ str = str_new(0);
+ str_set(str,"--");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec+1));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OUMINUS:
+ prec = P_UNARY;
+ str = str_new(0);
+ str_set(str,"-");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,prec));
+ str_free(fstr);
+ numeric = 1;
+ break;
+ case OUPLUS:
+ numeric = 1;
+ goto def;
+ case OPAREN:
+ str = str_new(0);
+ str_set(str,"(");
+ str_scat(str,
+ fstr=walk(useval != 0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,")");
+ numeric |= numarg;
+ break;
+ case OGETLINE:
+ str = str_new(0);
+ if (useval)
+ str_cat(str,"(");
+ if (len > 0) {
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ if (!*fstr->str_ptr) {
+ str_cat(str,"$_");
+ len = 2; /* a legal fiction */
+ }
+ str_free(fstr);
+ }
+ else
+ str_cat(str,"$_");
+ if (len > 1) {
+ tmpstr=walk(1,level,ops[node+3].ival,&numarg,P_MIN);
+ fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN);
+ if (!do_fancy_opens) {
+ t = tmpstr->str_ptr;
+ if (*t == '"' || *t == '\'')
+ t = cpytill(tokenbuf,t+1,*t);
+ else
+ fatal("Internal error: OGETLINE %s", t);
+ d = savestr(t);
+ s = savestr(tokenbuf);
+ for (t = tokenbuf; *t; t++) {
+ *t &= 127;
+ if (islower(*t))
+ *t = toupper(*t);
+ if (!isalpha(*t) && !isdigit(*t))
+ *t = '_';
+ }
+ if (!strchr(tokenbuf,'_'))
+ strcpy(t,"_FH");
+ tmp3str = hfetch(symtab,tokenbuf);
+ if (!tmp3str) {
+ do_opens = TRUE;
+ str_cat(opens,"open(");
+ str_cat(opens,tokenbuf);
+ str_cat(opens,", ");
+ d[1] = '\0';
+ str_cat(opens,d);
+ str_cat(opens,tmpstr->str_ptr+1);
+ opens->str_cur--;
+ if (*fstr->str_ptr == '|')
+ str_cat(opens,"|");
+ str_cat(opens,d);
+ if (*fstr->str_ptr == '|')
+ str_cat(opens,") || die 'Cannot pipe from \"");
+ else
+ str_cat(opens,") || die 'Cannot open file \"");
+ if (*d == '"')
+ str_cat(opens,"'.\"");
+ str_cat(opens,s);
+ if (*d == '"')
+ str_cat(opens,"\".'");
+ str_cat(opens,"\".';\n");
+ hstore(symtab,tokenbuf,str_make("x"));
+ }
+ safefree(s);
+ safefree(d);
+ str_set(tmpstr,"'");
+ str_cat(tmpstr,tokenbuf);
+ str_cat(tmpstr,"'");
+ }
+ if (*fstr->str_ptr == '|')
+ str_cat(tmpstr,", '|'");
+ str_free(fstr);
+ }
+ else
+ tmpstr = str_make("");
+ sprintf(tokenbuf," = &Getline%d(%s)",len,tmpstr->str_ptr);
+ str_cat(str,tokenbuf);
+ str_free(tmpstr);
+ if (useval)
+ str_cat(str,",$getline_ok)");
+ saw_getline |= 1 << len;
+ break;
+ case OSPRINTF:
+ str = str_new(0);
+ str_set(str,"sprintf(");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,")");
+ break;
+ case OSUBSTR:
+ str = str_new(0);
+ str_set(str,"substr(");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_COMMA+1));
+ str_free(fstr);
+ str_cat(str,", ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_COMMA+1));
+ str_free(fstr);
+ str_cat(str,", ");
+ if (len == 3) {
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,P_COMMA+1));
+ str_free(fstr);
+ }
+ else
+ str_cat(str,"999999");
+ str_cat(str,")");
+ break;
+ case OSTRING:
+ str = str_new(0);
+ str_set(str,ops[node+1].cval);
+ break;
+ case OSPLIT:
+ str = str_new(0);
+ limit = ", 9999)";
+ numeric = 1;
+ tmpstr = walk(1,level,ops[node+2].ival,&numarg,P_MIN);
+ if (useval)
+ str_set(str,"(@");
+ else
+ str_set(str,"@");
+ str_scat(str,tmpstr);
+ str_cat(str," = split(");
+ if (len == 3) {
+ fstr = walk(1,level,ops[node+3].ival,&numarg,P_COMMA+1);
+ if (str_len(fstr) == 3 && *fstr->str_ptr == '\'') {
+ i = fstr->str_ptr[1] & 127;
+ if (strchr("*+?.[]()|^$\\",i))
+ sprintf(tokenbuf,"/\\%c/",i);
+ else if (i == ' ')
+ sprintf(tokenbuf,"' '");
+ else
+ sprintf(tokenbuf,"/%c/",i);
+ str_cat(str,tokenbuf);
+ }
+ else
+ str_scat(str,fstr);
+ str_free(fstr);
+ }
+ else if (const_FS) {
+ sprintf(tokenbuf,"/[%c\\n]/",const_FS);
+ str_cat(str,tokenbuf);
+ }
+ else if (saw_FS)
+ str_cat(str,"$FS");
+ else {
+ str_cat(str,"' '");
+ limit = ")";
+ }
+ str_cat(str,", ");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_COMMA+1));
+ str_free(fstr);
+ str_cat(str,limit);
+ if (useval) {
+ str_cat(str,")");
+ }
+ str_free(tmpstr);
+ break;
+ case OINDEX:
+ str = str_new(0);
+ str_set(str,"index(");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_COMMA+1));
+ str_free(fstr);
+ str_cat(str,", ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_COMMA+1));
+ str_free(fstr);
+ str_cat(str,")");
+ numeric = 1;
+ break;
+ case OMATCH:
+ str = str_new(0);
+ prec = P_ANDAND;
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MATCH+1));
+ str_free(fstr);
+ str_cat(str," =~ ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MATCH+1));
+ str_free(fstr);
+ str_cat(str," && ($RLENGTH = length($&), $RSTART = length($`)+1)");
+ numeric = 1;
+ break;
+ case OUSERDEF:
+ str = str_new(0);
+ subretnum = FALSE;
+ fstr=walk(1,level-1,ops[node+2].ival,&numarg,P_MIN);
+ curargs = str_new(0);
+ str_sset(curargs,fstr);
+ str_cat(curargs,",");
+ tmp2str=walk(1,level,ops[node+5].ival,&numarg,P_MIN);
+ str_free(curargs);
+ curargs = Nullstr;
+ level--;
+ subretnum |= numarg;
+ s = Nullch;
+ t = tmp2str->str_ptr;
+ while (t = instr(t,"return "))
+ s = t++;
+ if (s) {
+ i = 0;
+ for (t = s+7; *t; t++) {
+ if (*t == ';' || *t == '}')
+ i++;
+ }
+ if (i == 1) {
+ strcpy(s,s+7);
+ tmp2str->str_cur -= 7;
+ }
+ }
+ str_set(str,"\n");
+ tab(str,level);
+ str_cat(str,"sub ");
+ str_scat(str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ str_cat(str," {\n");
+ tab(str,++level);
+ if (fstr->str_cur) {
+ str_cat(str,"local(");
+ str_scat(str,fstr);
+ str_cat(str,") = @_;");
+ }
+ str_free(fstr);
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,P_MIN));
+ str_free(fstr);
+ fixtab(str,level);
+ str_scat(str,fstr=walk(1,level,ops[node+4].ival,&numarg,P_MIN));
+ str_free(fstr);
+ fixtab(str,level);
+ str_scat(str,tmp2str);
+ str_free(tmp2str);
+ fixtab(str,--level);
+ str_cat(str,"}\n");
+ tab(str,level);
+ str_scat(subs,str);
+ str_set(str,"");
+ str_cat(tmpstr,"(");
+ tmp2str = str_new(0);
+ if (subretnum)
+ str_set(tmp2str,"1");
+ hstore(symtab,tmpstr->str_ptr,tmp2str);
+ str_free(tmpstr);
+ level++;
+ break;
+ case ORETURN:
+ str = str_new(0);
+ if (len > 0) {
+ str_cat(str,"return ");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_UNI+1));
+ str_free(fstr);
+ if (numarg)
+ subretnum = TRUE;
+ }
+ else
+ str_cat(str,"return");
+ break;
+ case OUSERFUN:
+ str = str_new(0);
+ str_set(str,"&");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,"(");
+ tmpstr = hfetch(symtab,str->str_ptr+3);
+ if (tmpstr && tmpstr->str_ptr)
+ numeric |= atoi(tmpstr->str_ptr);
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,")");
+ break;
+ case OGSUB:
+ case OSUB:
+ if (type == OGSUB)
+ s = "g";
+ else
+ s = "";
+ str = str_new(0);
+ tmpstr = str_new(0);
+ i = 0;
+ if (len == 3) {
+ tmpstr = walk(1,level,ops[node+3].ival,&numarg,P_MATCH+1);
+ if (strNE(tmpstr->str_ptr,"$_")) {
+ str_cat(tmpstr, " =~ s");
+ i++;
+ }
+ else
+ str_set(tmpstr, "s");
+ }
+ else
+ str_set(tmpstr, "s");
+ type = ops[ops[node+2].ival].ival;
+ len = type >> 8;
+ type &= 255;
+ tmp3str = str_new(0);
+ if (type == OSTR) {
+ tmp2str=walk(1,level,ops[ops[node+2].ival+1].ival,&numarg,P_MIN);
+ for (t = tmp2str->str_ptr, d=tokenbuf; *t; d++,t++) {
+ if (*t == '&')
+ *d++ = '$' + 128;
+ else if (*t == '$')
+ *d++ = '\\' + 128;
+ *d = *t + 128;
+ }
+ *d = '\0';
+ str_set(tmp2str,tokenbuf);
+ }
+ else {
+ tmp2str=walk(1,level,ops[node+2].ival,&numarg,P_MIN);
+ str_set(tmp3str,"($s_ = '\"'.(");
+ str_scat(tmp3str,tmp2str);
+ str_cat(tmp3str,").'\"') =~ s/&/\\$&/g, ");
+ str_set(tmp2str,"eval $s_");
+ s = (*s == 'g' ? "ge" : "e");
+ i++;
+ }
+ type = ops[ops[node+1].ival].ival;
+ len = type >> 8;
+ type &= 255;
+ fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN);
+ if (type == OREGEX) {
+ if (useval && i)
+ str_cat(str,"(");
+ str_scat(str,tmp3str);
+ str_scat(str,tmpstr);
+ str_scat(str,fstr);
+ str_scat(str,tmp2str);
+ str_cat(str,"/");
+ str_cat(str,s);
+ }
+ else if ((type == OFLD && !split_to_array) || (type == OVAR && len == 1)) {
+ if (useval && i)
+ str_cat(str,"(");
+ str_scat(str,tmp3str);
+ str_scat(str,tmpstr);
+ str_cat(str,"/");
+ str_scat(str,fstr);
+ str_cat(str,"/");
+ str_scat(str,tmp2str);
+ str_cat(str,"/");
+ str_cat(str,s);
+ }
+ else {
+ i++;
+ if (useval)
+ str_cat(str,"(");
+ str_cat(str,"$s = ");
+ str_scat(str,fstr);
+ str_cat(str,", ");
+ str_scat(str,tmp3str);
+ str_scat(str,tmpstr);
+ str_cat(str,"/$s/");
+ str_scat(str,tmp2str);
+ str_cat(str,"/");
+ str_cat(str,s);
+ }
+ if (useval && i)
+ str_cat(str,")");
+ str_free(fstr);
+ str_free(tmpstr);
+ str_free(tmp2str);
+ str_free(tmp3str);
+ numeric = 1;
+ break;
+ case ONUM:
+ str = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
+ numeric = 1;
+ break;
+ case OSTR:
+ tmpstr = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
+ s = "'";
+ for (t = tmpstr->str_ptr, d=tokenbuf; *t; d++,t++) {
+ if (*t == '\'')
+ s = "\"";
+ else if (*t == '\\') {
+ s = "\"";
+ *d++ = *t++ + 128;
+ switch (*t) {
+ case '\\': case '"': case 'n': case 't': case '$':
+ break;
+ default: /* hide this from perl */
+ *d++ = '\\' + 128;
+ }
+ }
+ *d = *t + 128;
+ }
+ *d = '\0';
+ str = str_new(0);
+ str_set(str,s);
+ str_cat(str,tokenbuf);
+ str_free(tmpstr);
+ str_cat(str,s);
+ break;
+ case ODEFINED:
+ prec = P_UNI;
+ str = str_new(0);
+ str_set(str,"defined $");
+ goto addvar;
+ case ODELETE:
+ str = str_new(0);
+ str_set(str,"delete $");
+ goto addvar;
+ case OSTAR:
+ str = str_new(0);
+ str_set(str,"*");
+ goto addvar;
+ case OVAR:
+ str = str_new(0);
+ str_set(str,"$");
+ addvar:
+ str_scat(str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ if (len == 1) {
+ tmp2str = hfetch(symtab,tmpstr->str_ptr);
+ if (tmp2str && atoi(tmp2str->str_ptr))
+ numeric = 2;
+ if (strEQ(str->str_ptr,"$FNR")) {
+ numeric = 1;
+ saw_FNR++;
+ str_set(str,"($.-$FNRbase)");
+ }
+ else if (strEQ(str->str_ptr,"$NR")) {
+ numeric = 1;
+ str_set(str,"$.");
+ }
+ else if (strEQ(str->str_ptr,"$NF")) {
+ numeric = 1;
+ str_set(str,"$#Fld");
+ }
+ else if (strEQ(str->str_ptr,"$0"))
+ str_set(str,"$_");
+ else if (strEQ(str->str_ptr,"$ARGC"))
+ str_set(str,"($#ARGV+1)");
+ }
+ else {
+#ifdef NOTDEF
+ if (curargs) {
+ sprintf(tokenbuf,"$%s,",tmpstr->str_ptr);
+ ??? if (instr(curargs->str_ptr,tokenbuf))
+ str_cat(str,"\377"); /* can't translate yet */
+ }
+#endif
+ str_cat(tmpstr,"[]");
+ tmp2str = hfetch(symtab,tmpstr->str_ptr);
+ if (tmp2str && atoi(tmp2str->str_ptr))
+ str_cat(str,"[");
+ else
+ str_cat(str,"{");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ if (strEQ(str->str_ptr,"$ARGV[0")) {
+ str_set(str,"$ARGV0");
+ saw_argv0++;
+ }
+ else {
+ if (tmp2str && atoi(tmp2str->str_ptr))
+ strcpy(tokenbuf,"]");
+ else
+ strcpy(tokenbuf,"}");
+ *tokenbuf += 128;
+ str_cat(str,tokenbuf);
+ }
+ }
+ str_free(tmpstr);
+ break;
+ case OFLD:
+ str = str_new(0);
+ if (split_to_array) {
+ str_set(str,"$Fld");
+ str_cat(str,"[");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,"]");
+ }
+ else {
+ i = atoi(walk(1,level,ops[node+1].ival,&numarg,P_MIN)->str_ptr);
+ if (i <= arymax)
+ sprintf(tokenbuf,"$%s",nameary[i]);
+ else
+ sprintf(tokenbuf,"$Fld%d",i);
+ str_set(str,tokenbuf);
+ }
+ break;
+ case OVFLD:
+ str = str_new(0);
+ str_set(str,"$Fld[");
+ i = ops[node+1].ival;
+ if ((ops[i].ival & 255) == OPAREN)
+ i = ops[i+1].ival;
+ tmpstr=walk(1,level,i,&numarg,P_MIN);
+ str_scat(str,tmpstr);
+ str_free(tmpstr);
+ str_cat(str,"]");
+ break;
+ case OJUNK:
+ goto def;
+ case OSNEWLINE:
+ str = str_new(2);
+ str_set(str,";\n");
+ tab(str,level);
+ break;
+ case ONEWLINE:
+ str = str_new(1);
+ str_set(str,"\n");
+ tab(str,level);
+ break;
+ case OSCOMMENT:
+ str = str_new(0);
+ str_set(str,";");
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ for (s = tmpstr->str_ptr; *s && *s != '\n'; s++)
+ *s += 128;
+ str_scat(str,tmpstr);
+ str_free(tmpstr);
+ tab(str,level);
+ break;
+ case OCOMMENT:
+ str = str_new(0);
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ for (s = tmpstr->str_ptr; *s && *s != '\n'; s++)
+ *s += 128;
+ str_scat(str,tmpstr);
+ str_free(tmpstr);
+ tab(str,level);
+ break;
+ case OCOMMA:
+ prec = P_COMMA;
+ str = walk(1,level,ops[node+1].ival,&numarg,prec);
+ str_cat(str,", ");
+ str_scat(str,fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,prec+1));
+ str_free(fstr);
+ break;
+ case OSEMICOLON:
+ str = str_new(1);
+ str_set(str,";\n");
+ tab(str,level);
+ break;
+ case OSTATES:
+ str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ break;
+ case OSTATE:
+ str = str_new(0);
+ if (len >= 1) {
+ str_scat(str,fstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ if (len >= 2) {
+ tmpstr = walk(0,level,ops[node+2].ival,&numarg,P_MIN);
+ if (*tmpstr->str_ptr == ';') {
+ addsemi(str);
+ str_cat(str,tmpstr->str_ptr+1);
+ }
+ str_free(tmpstr);
+ }
+ }
+ break;
+ case OCLOSE:
+ str = str_make("close(");
+ tmpstr = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
+ if (!do_fancy_opens) {
+ t = tmpstr->str_ptr;
+ if (*t == '"' || *t == '\'')
+ t = cpytill(tokenbuf,t+1,*t);
+ else
+ fatal("Internal error: OCLOSE %s",t);
+ s = savestr(tokenbuf);
+ for (t = tokenbuf; *t; t++) {
+ *t &= 127;
+ if (islower(*t))
+ *t = toupper(*t);
+ if (!isalpha(*t) && !isdigit(*t))
+ *t = '_';
+ }
+ if (!strchr(tokenbuf,'_'))
+ strcpy(t,"_FH");
+ str_free(tmpstr);
+ safefree(s);
+ str_set(str,"close ");
+ str_cat(str,tokenbuf);
+ }
+ else {
+ sprintf(tokenbuf,"delete $opened{%s} && close(%s)",
+ tmpstr->str_ptr, tmpstr->str_ptr);
+ str_free(tmpstr);
+ str_set(str,tokenbuf);
+ }
+ break;
+ case OPRINTF:
+ case OPRINT:
+ lparen = ""; /* set to parens if necessary */
+ rparen = "";
+ str = str_new(0);
+ if (len == 3) { /* output redirection */
+ tmpstr = walk(1,level,ops[node+3].ival,&numarg,P_MIN);
+ tmp2str = walk(1,level,ops[node+2].ival,&numarg,P_MIN);
+ if (!do_fancy_opens) {
+ t = tmpstr->str_ptr;
+ if (*t == '"' || *t == '\'')
+ t = cpytill(tokenbuf,t+1,*t);
+ else
+ fatal("Internal error: OPRINT");
+ d = savestr(t);
+ s = savestr(tokenbuf);
+ for (t = tokenbuf; *t; t++) {
+ *t &= 127;
+ if (islower(*t))
+ *t = toupper(*t);
+ if (!isalpha(*t) && !isdigit(*t))
+ *t = '_';
+ }
+ if (!strchr(tokenbuf,'_'))
+ strcpy(t,"_FH");
+ tmp3str = hfetch(symtab,tokenbuf);
+ if (!tmp3str) {
+ str_cat(opens,"open(");
+ str_cat(opens,tokenbuf);
+ str_cat(opens,", ");
+ d[1] = '\0';
+ str_cat(opens,d);
+ str_scat(opens,tmp2str);
+ str_cat(opens,tmpstr->str_ptr+1);
+ if (*tmp2str->str_ptr == '|')
+ str_cat(opens,") || die 'Cannot pipe to \"");
+ else
+ str_cat(opens,") || die 'Cannot create file \"");
+ if (*d == '"')
+ str_cat(opens,"'.\"");
+ str_cat(opens,s);
+ if (*d == '"')
+ str_cat(opens,"\".'");
+ str_cat(opens,"\".';\n");
+ hstore(symtab,tokenbuf,str_make("x"));
+ }
+ str_free(tmpstr);
+ str_free(tmp2str);
+ safefree(s);
+ safefree(d);
+ }
+ else {
+ sprintf(tokenbuf,"&Pick('%s', %s) &&\n",
+ tmp2str->str_ptr, tmpstr->str_ptr);
+ str_cat(str,tokenbuf);
+ tab(str,level+1);
+ strcpy(tokenbuf,"$fh");
+ str_free(tmpstr);
+ str_free(tmp2str);
+ lparen = "(";
+ rparen = ")";
+ }
+ }
+ else
+ strcpy(tokenbuf,"");
+ str_cat(str,lparen); /* may be null */
+ if (type == OPRINTF)
+ str_cat(str,"printf");
+ else
+ str_cat(str,"print");
+ saw_fh = 0;
+ if (len == 3 || do_fancy_opens) {
+ if (*tokenbuf) {
+ str_cat(str," ");
+ saw_fh = 1;
+ }
+ str_cat(str,tokenbuf);
+ }
+ tmpstr = walk(1+(type==OPRINT),level,ops[node+1].ival,&numarg,P_MIN);
+ if (!*tmpstr->str_ptr && lval_field) {
+ t = saw_OFS ? "$," : "' '";
+ if (split_to_array) {
+ sprintf(tokenbuf,"join(%s,@Fld)",t);
+ str_cat(tmpstr,tokenbuf);
+ }
+ else {
+ for (i = 1; i < maxfld; i++) {
+ if (i <= arymax)
+ sprintf(tokenbuf,"$%s, ",nameary[i]);
+ else
+ sprintf(tokenbuf,"$Fld%d, ",i);
+ str_cat(tmpstr,tokenbuf);
+ }
+ if (maxfld <= arymax)
+ sprintf(tokenbuf,"$%s",nameary[maxfld]);
+ else
+ sprintf(tokenbuf,"$Fld%d",maxfld);
+ str_cat(tmpstr,tokenbuf);
+ }
+ }
+ if (*tmpstr->str_ptr) {
+ str_cat(str," ");
+ if (!saw_fh && *tmpstr->str_ptr == '(') {
+ str_cat(str,"(");
+ str_scat(str,tmpstr);
+ str_cat(str,")");
+ }
+ else
+ str_scat(str,tmpstr);
+ }
+ else {
+ str_cat(str," $_");
+ }
+ str_cat(str,rparen); /* may be null */
+ str_free(tmpstr);
+ break;
+ case ORAND:
+ str = str_make("rand(1)");
+ break;
+ case OSRAND:
+ str = str_make("srand(");
+ goto maybe0;
+ case OATAN2:
+ str = str_make("atan2(");
+ goto maybe0;
+ case OSIN:
+ str = str_make("sin(");
+ goto maybe0;
+ case OCOS:
+ str = str_make("cos(");
+ goto maybe0;
+ case OSYSTEM:
+ str = str_make("system(");
+ goto maybe0;
+ case OLENGTH:
+ str = str_make("length(");
+ goto maybe0;
+ case OLOG:
+ str = str_make("log(");
+ goto maybe0;
+ case OEXP:
+ str = str_make("exp(");
+ goto maybe0;
+ case OSQRT:
+ str = str_make("sqrt(");
+ goto maybe0;
+ case OINT:
+ str = str_make("int(");
+ maybe0:
+ numeric = 1;
+ if (len > 0)
+ tmpstr = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
+ else
+ tmpstr = str_new(0);;
+ if (!tmpstr->str_ptr || !*tmpstr->str_ptr) {
+ if (lval_field) {
+ t = saw_OFS ? "$," : "' '";
+ if (split_to_array) {
+ sprintf(tokenbuf,"join(%s,@Fld)",t);
+ str_cat(tmpstr,tokenbuf);
+ }
+ else {
+ sprintf(tokenbuf,"join(%s, ",t);
+ str_cat(tmpstr,tokenbuf);
+ for (i = 1; i < maxfld; i++) {
+ if (i <= arymax)
+ sprintf(tokenbuf,"$%s,",nameary[i]);
+ else
+ sprintf(tokenbuf,"$Fld%d,",i);
+ str_cat(tmpstr,tokenbuf);
+ }
+ if (maxfld <= arymax)
+ sprintf(tokenbuf,"$%s)",nameary[maxfld]);
+ else
+ sprintf(tokenbuf,"$Fld%d)",maxfld);
+ str_cat(tmpstr,tokenbuf);
+ }
+ }
+ else
+ str_cat(tmpstr,"$_");
+ }
+ if (strEQ(tmpstr->str_ptr,"$_")) {
+ if (type == OLENGTH && !do_chop) {
+ str = str_make("(length(");
+ str_cat(tmpstr,") - 1");
+ }
+ }
+ str_scat(str,tmpstr);
+ str_free(tmpstr);
+ str_cat(str,")");
+ break;
+ case OBREAK:
+ str = str_new(0);
+ str_set(str,"last");
+ break;
+ case ONEXT:
+ str = str_new(0);
+ str_set(str,"next line");
+ break;
+ case OEXIT:
+ str = str_new(0);
+ if (realexit) {
+ prec = P_UNI;
+ str_set(str,"exit");
+ if (len == 1) {
+ str_cat(str," ");
+ exitval = TRUE;
+ str_scat(str,
+ fstr=walk(1,level,ops[node+1].ival,&numarg,prec+1));
+ str_free(fstr);
+ }
+ }
+ else {
+ if (len == 1) {
+ str_set(str,"$ExitValue = ");
+ exitval = TRUE;
+ str_scat(str,
+ fstr=walk(1,level,ops[node+1].ival,&numarg,P_ASSIGN));
+ str_free(fstr);
+ str_cat(str,"; ");
+ }
+ str_cat(str,"last line");
+ }
+ break;
+ case OCONTINUE:
+ str = str_new(0);
+ str_set(str,"next");
+ break;
+ case OREDIR:
+ goto def;
+ case OIF:
+ str = str_new(0);
+ str_set(str,"if (");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,") ");
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ if (len == 3) {
+ i = ops[node+3].ival;
+ if (i) {
+ if ((ops[i].ival & 255) == OBLOCK) {
+ i = ops[i+1].ival;
+ if (i) {
+ if ((ops[i].ival & 255) != OIF)
+ i = 0;
+ }
+ }
+ else
+ i = 0;
+ }
+ if (i) {
+ str_cat(str,"els");
+ str_scat(str,fstr=walk(0,level,i,&numarg,P_MIN));
+ str_free(fstr);
+ }
+ else {
+ str_cat(str,"else ");
+ str_scat(str,fstr=walk(0,level,ops[node+3].ival,&numarg,P_MIN));
+ str_free(fstr);
+ }
+ }
+ break;
+ case OWHILE:
+ str = str_new(0);
+ str_set(str,"while (");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,") ");
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ break;
+ case ODO:
+ str = str_new(0);
+ str_set(str,"do ");
+ str_scat(str,fstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ if (str->str_ptr[str->str_cur - 1] == '\n')
+ --str->str_cur;;
+ str_cat(str," while (");
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,");");
+ break;
+ case OFOR:
+ str = str_new(0);
+ str_set(str,"for (");
+ str_scat(str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ i = numarg;
+ if (i) {
+ t = s = tmpstr->str_ptr;
+ while (isalpha(*t) || isdigit(*t) || *t == '$' || *t == '_')
+ t++;
+ i = t - s;
+ if (i < 2)
+ i = 0;
+ }
+ str_cat(str,"; ");
+ fstr=walk(1,level,ops[node+2].ival,&numarg,P_MIN);
+ if (i && (t = strchr(fstr->str_ptr,0377))) {
+ if (strnEQ(fstr->str_ptr,s,i))
+ *t = ' ';
+ }
+ str_scat(str,fstr);
+ str_free(fstr);
+ str_free(tmpstr);
+ str_cat(str,"; ");
+ str_scat(str,fstr=walk(1,level,ops[node+3].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_cat(str,") ");
+ str_scat(str,fstr=walk(0,level,ops[node+4].ival,&numarg,P_MIN));
+ str_free(fstr);
+ break;
+ case OFORIN:
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ d = strchr(tmpstr->str_ptr,'$');
+ if (!d)
+ fatal("Illegal for loop: %s",tmpstr->str_ptr);
+ s = strchr(d,'{');
+ if (!s)
+ s = strchr(d,'[');
+ if (!s)
+ fatal("Illegal for loop: %s",d);
+ *s++ = '\0';
+ for (t = s; i = *t; t++) {
+ i &= 127;
+ if (i == '}' || i == ']')
+ break;
+ }
+ if (*t)
+ *t = '\0';
+ str = str_new(0);
+ str_set(str,d+1);
+ str_cat(str,"[]");
+ tmp2str = hfetch(symtab,str->str_ptr);
+ if (tmp2str && atoi(tmp2str->str_ptr)) {
+ sprintf(tokenbuf,
+ "foreach %s ($[ .. $#%s) ",
+ s,
+ d+1);
+ }
+ else {
+ sprintf(tokenbuf,
+ "foreach %s (keys %%%s) ",
+ s,
+ d+1);
+ }
+ str_set(str,tokenbuf);
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ str_free(tmpstr);
+ break;
+ case OBLOCK:
+ str = str_new(0);
+ str_set(str,"{");
+ if (len >= 2 && ops[node+2].ival) {
+ str_scat(str,fstr=walk(0,level,ops[node+2].ival,&numarg,P_MIN));
+ str_free(fstr);
+ }
+ fixtab(str,++level);
+ str_scat(str,fstr=walk(0,level,ops[node+1].ival,&numarg,P_MIN));
+ str_free(fstr);
+ addsemi(str);
+ fixtab(str,--level);
+ str_cat(str,"}\n");
+ tab(str,level);
+ if (len >= 3) {
+ str_scat(str,fstr=walk(0,level,ops[node+3].ival,&numarg,P_MIN));
+ str_free(fstr);
+ }
+ break;
+ default:
+ def:
+ if (len) {
+ if (len > 5)
+ fatal("Garbage length in walk");
+ str = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ for (i = 2; i<= len; i++) {
+ str_scat(str,fstr=walk(0,level,ops[node+i].ival,&numarg,P_MIN));
+ str_free(fstr);
+ }
+ }
+ else {
+ str = Nullstr;
+ }
+ break;
+ }
+ if (!str)
+ str = str_new(0);
+
+ if (useval && prec < minprec) { /* need parens? */
+ fstr = str_new(str->str_cur+2);
+ str_nset(fstr,"(",1);
+ str_scat(fstr,str);
+ str_ncat(fstr,")",1);
+ str_free(str);
+ str = fstr;
+ }
+
+ *numericptr = numeric;
+#ifdef DEBUGGING
+ if (debug & 4) {
+ printf("%3d %5d %15s %d %4d ",level,node,opname[type],len,str->str_cur);
+ for (t = str->str_ptr; *t && t - str->str_ptr < 40; t++)
+ if (*t == '\n')
+ printf("\\n");
+ else if (*t == '\t')
+ printf("\\t");
+ else
+ putchar(*t);
+ putchar('\n');
+ }
+#endif
+ return str;
+}
+
+static void
+tab(register STR *str, register int lvl)
+{
+ while (lvl > 1) {
+ str_cat(str,"\t");
+ lvl -= 2;
+ }
+ if (lvl)
+ str_cat(str," ");
+}
+
+static void
+fixtab(register STR *str, register int lvl)
+{
+ register char *s;
+
+ /* strip trailing white space */
+
+ s = str->str_ptr+str->str_cur - 1;
+ while (s >= str->str_ptr && (*s == ' ' || *s == '\t' || *s == '\n'))
+ s--;
+ s[1] = '\0';
+ str->str_cur = s + 1 - str->str_ptr;
+ if (s >= str->str_ptr && *s != '\n')
+ str_cat(str,"\n");
+
+ tab(str,lvl);
+}
+
+static void
+addsemi(register STR *str)
+{
+ register char *s;
+
+ s = str->str_ptr+str->str_cur - 1;
+ while (s >= str->str_ptr && (*s == ' ' || *s == '\t' || *s == '\n'))
+ s--;
+ if (s >= str->str_ptr && *s != ';' && *s != '}')
+ str_cat(str,";");
+}
+
+static void
+emit_split(register STR *str, int level)
+{
+ register int i;
+
+ if (split_to_array)
+ str_cat(str,"@Fld");
+ else {
+ str_cat(str,"(");
+ for (i = 1; i < maxfld; i++) {
+ if (i <= arymax)
+ sprintf(tokenbuf,"$%s,",nameary[i]);
+ else
+ sprintf(tokenbuf,"$Fld%d,",i);
+ str_cat(str,tokenbuf);
+ }
+ if (maxfld <= arymax)
+ sprintf(tokenbuf,"$%s)",nameary[maxfld]);
+ else
+ sprintf(tokenbuf,"$Fld%d)",maxfld);
+ str_cat(str,tokenbuf);
+ }
+ if (const_FS) {
+ sprintf(tokenbuf," = split(/[%c\\n]/, $_, 9999);\n",const_FS);
+ str_cat(str,tokenbuf);
+ }
+ else if (saw_FS)
+ str_cat(str," = split($FS, $_, 9999);\n");
+ else
+ str_cat(str," = split(' ', $_, 9999);\n");
+ tab(str,level);
+}
+
+int
+prewalk(int numit, int level, register int node, int *numericptr)
+{
+ register int len;
+ register int type;
+ register int i;
+ int numarg;
+ int numeric = FALSE;
+ STR *tmpstr;
+ STR *tmp2str;
+
+ if (!node) {
+ *numericptr = 0;
+ return 0;
+ }
+ type = ops[node].ival;
+ len = type >> 8;
+ type &= 255;
+ switch (type) {
+ case OPROG:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ if (ops[node+2].ival) {
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ }
+ ++level;
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ --level;
+ if (ops[node+3].ival) {
+ prewalk(0,level,ops[node+4].ival,&numarg);
+ }
+ break;
+ case OHUNKS:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ if (len == 3) {
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ }
+ break;
+ case ORANGE:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ break;
+ case OPAT:
+ goto def;
+ case OREGEX:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OHUNK:
+ if (len == 1) {
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ }
+ else {
+ i = prewalk(0,level,ops[node+1].ival,&numarg);
+ if (i) {
+ ++level;
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ --level;
+ }
+ else {
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ }
+ }
+ break;
+ case OPPAREN:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OPANDAND:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ break;
+ case OPOROR:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ break;
+ case OPNOT:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OCPAREN:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric |= numarg;
+ break;
+ case OCANDAND:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ break;
+ case OCOROR:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ break;
+ case OCNOT:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case ORELOP:
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ numeric |= numarg;
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ numeric |= numarg;
+ numeric = 1;
+ break;
+ case ORPAREN:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric |= numarg;
+ break;
+ case OMATCHOP:
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ numeric = 1;
+ break;
+ case OMPAREN:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric |= numarg;
+ break;
+ case OCONCAT:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ break;
+ case OASSIGN:
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ if (numarg || strlen(ops[ops[node+1].ival+1].cval) > (Size_t)1) {
+ numericize(ops[node+2].ival);
+ if (!numarg)
+ numericize(ops[node+3].ival);
+ }
+ numeric |= numarg;
+ break;
+ case OADD:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case OSUBTRACT:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case OMULT:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case ODIV:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case OPOW:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case OMOD:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case OPOSTINCR:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case OPOSTDECR:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case OPREINCR:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case OPREDECR:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case OUMINUS:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case OUPLUS:
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case OPAREN:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric |= numarg;
+ break;
+ case OGETLINE:
+ break;
+ case OSPRINTF:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OSUBSTR:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(1,level,ops[node+2].ival,&numarg);
+ if (len == 3) {
+ prewalk(1,level,ops[node+3].ival,&numarg);
+ }
+ break;
+ case OSTRING:
+ break;
+ case OSPLIT:
+ numeric = 1;
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ if (len == 3)
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OINDEX:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case OMATCH:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ numeric = 1;
+ break;
+ case OUSERDEF:
+ subretnum = FALSE;
+ --level;
+ tmpstr = walk(0,level,ops[node+1].ival,&numarg,P_MIN);
+ ++level;
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ prewalk(0,level,ops[node+4].ival,&numarg);
+ prewalk(0,level,ops[node+5].ival,&numarg);
+ --level;
+ str_cat(tmpstr,"(");
+ tmp2str = str_new(0);
+ if (subretnum || numarg)
+ str_set(tmp2str,"1");
+ hstore(symtab,tmpstr->str_ptr,tmp2str);
+ str_free(tmpstr);
+ level++;
+ break;
+ case ORETURN:
+ if (len > 0) {
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ if (numarg)
+ subretnum = TRUE;
+ }
+ break;
+ case OUSERFUN:
+ tmp2str = str_new(0);
+ str_scat(tmp2str,tmpstr=walk(1,level,ops[node+1].ival,&numarg,P_MIN));
+ fixrargs(tmpstr->str_ptr,ops[node+2].ival,0);
+ str_free(tmpstr);
+ str_cat(tmp2str,"(");
+ tmpstr = hfetch(symtab,tmp2str->str_ptr);
+ if (tmpstr && tmpstr->str_ptr)
+ numeric |= atoi(tmpstr->str_ptr);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ str_free(tmp2str);
+ break;
+ case OGSUB:
+ case OSUB:
+ if (len >= 3)
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ prewalk(0,level,ops[ops[node+2].ival+1].ival,&numarg);
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case ONUM:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ numeric = 1;
+ break;
+ case OSTR:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case ODEFINED:
+ case ODELETE:
+ case OSTAR:
+ case OVAR:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ if (len == 1) {
+ if (numit)
+ numericize(node);
+ }
+ else {
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ }
+ break;
+ case OFLD:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OVFLD:
+ i = ops[node+1].ival;
+ prewalk(0,level,i,&numarg);
+ break;
+ case OJUNK:
+ goto def;
+ case OSNEWLINE:
+ break;
+ case ONEWLINE:
+ break;
+ case OSCOMMENT:
+ break;
+ case OCOMMENT:
+ break;
+ case OCOMMA:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ break;
+ case OSEMICOLON:
+ break;
+ case OSTATES:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ break;
+ case OSTATE:
+ if (len >= 1) {
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ if (len >= 2) {
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ }
+ }
+ break;
+ case OCLOSE:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OPRINTF:
+ case OPRINT:
+ if (len == 3) { /* output redirection */
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ }
+ prewalk(0+(type==OPRINT),level,ops[node+1].ival,&numarg);
+ break;
+ case ORAND:
+ break;
+ case OSRAND:
+ goto maybe0;
+ case OATAN2:
+ goto maybe0;
+ case OSIN:
+ goto maybe0;
+ case OCOS:
+ goto maybe0;
+ case OSYSTEM:
+ goto maybe0;
+ case OLENGTH:
+ goto maybe0;
+ case OLOG:
+ goto maybe0;
+ case OEXP:
+ goto maybe0;
+ case OSQRT:
+ goto maybe0;
+ case OINT:
+ maybe0:
+ numeric = 1;
+ if (len > 0)
+ prewalk(type != OLENGTH && type != OSYSTEM,
+ level,ops[node+1].ival,&numarg);
+ break;
+ case OBREAK:
+ break;
+ case ONEXT:
+ break;
+ case OEXIT:
+ if (len == 1) {
+ prewalk(1,level,ops[node+1].ival,&numarg);
+ }
+ break;
+ case OCONTINUE:
+ break;
+ case OREDIR:
+ goto def;
+ case OIF:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ if (len == 3) {
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ }
+ break;
+ case OWHILE:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ break;
+ case OFOR:
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ prewalk(0,level,ops[node+3].ival,&numarg);
+ prewalk(0,level,ops[node+4].ival,&numarg);
+ break;
+ case OFORIN:
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ break;
+ case OBLOCK:
+ if (len == 2) {
+ prewalk(0,level,ops[node+2].ival,&numarg);
+ }
+ ++level;
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ --level;
+ break;
+ default:
+ def:
+ if (len) {
+ if (len > 5)
+ fatal("Garbage length in prewalk");
+ prewalk(0,level,ops[node+1].ival,&numarg);
+ for (i = 2; i<= len; i++) {
+ prewalk(0,level,ops[node+i].ival,&numarg);
+ }
+ }
+ break;
+ }
+ *numericptr = numeric;
+ return 1;
+}
+
+static void
+numericize(register int node)
+{
+ register int len;
+ register int type;
+ STR *tmpstr;
+ STR *tmp2str;
+ int numarg;
+
+ type = ops[node].ival;
+ len = type >> 8;
+ type &= 255;
+ if (type == OVAR && len == 1) {
+ tmpstr=walk(0,0,ops[node+1].ival,&numarg,P_MIN);
+ tmp2str = str_make("1");
+ hstore(symtab,tmpstr->str_ptr,tmp2str);
+ }
+}
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