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freebsd/contrib/perl5/x2p/walk.c

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48 KiB
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/* $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,"chomp;\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,"chomp;\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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