static void eforinst(Tobj co, int ci)
{
volatile jmp_buf *opljbufp;
volatile jmp_buf pljbuf;
volatile Tobj tblo, c1o;
volatile Tkvindex_t tkvi;
volatile tnk_t tnk;
volatile long km, t;
volatile int ei1, ei2, si;
c1o = (volatile Tobj) co; /* protect argument from longjmp */
ei1 = TCgetfp(c1o, ci);
ei2 = TCgetnext(c1o, ei1);
si = TCgetnext(c1o, ei2);
if (getvar((Tobj) c1o, ei1, (tnk_t *) & tnk) == -1) {
err(ERRNOLHS, ERR3, c1o, ei1);
return;
}
if (tnk.type == TNK_O)
km = Mpushmark(tnk.u.tnko.ko);
if (!(tblo = (volatile Tobj) eeval((Tobj) c1o, ei2))) {
if (tnk.type == TNK_O)
Mpopmark(km);
err(ERRNORHS, ERR4, c1o, ei2);
return;
}
if (Tgettype(tblo) != T_TABLE) {
err(ERRNOTATABLE, ERR1, c1o, ei2);
return;
}
PUSHJMP(opljbufp, pljbufp1, pljbuf);
t = Tgettime(tblo);
for (Tgetfirst((Tobj) tblo, (Tkvindex_t *) & tkvi); tkvi.kvp;
Tgetnext((Tkvindex_t *) & tkvi)) {
setvar(tnk, tkvi.kvp->ko);
if (setjmp(*pljbufp1) != 0) {
if (pljtype == PLJ_CONTINUE)
continue;
else if (pljtype == PLJ_BREAK)
break;
}
eeval((Tobj) c1o, si);
if (t != Tgettime(tblo)) {
err(ERRTABLECHANGED, ERR1, c1o, ei2);
break;
}
}
POPJMP(opljbufp, pljbufp1);
if (tnk.type == TNK_O)
Mpopmark(km);
}
/* LEFTY builtin */
int C2Lreadcsmessage (int argc, lvar_t *argv) {
#if 0 /* not finished yet */
io_t *p;
int ioi, n;
Msg_call_t msg;
Tobj to;
int tm;
ioi = Tgetnumber (argv[0].o);
if (ioi < 0 || ioi >= ion)
return L_FAILURE;
p = &iop[ioi];
fseek (p->ofp, 0L, 1);
if ((n = msgrecv (fileno (p->ifp), &msg)) <= 0)
return L_FAILURE;
to = Ttable (6);
tm = Mpushmark (to);
Tinss (to, "id", Tinteger (MSG_CHANNEL_USR (msg.channel)));
Tinss (to, "pid", Tinteger (MSG_CHANNEL_SYS (msg.channel)));
rtno = to;
Mpopmark (tm);
#endif
return L_SUCCESS;
}
void Eterm(void)
{
Marrayfree(sinfop), sinfop = NULL, sinfon = 0, sinfoi = 0;
Marrayfree(lvarp), lvarp = NULL, lvarn = 0, llvari = 0, flvari = 0;
rtno = NULL;
null = NULL;
Mpopmark(rootm);
}
Tobj Eunit(Tobj co)
{
volatile jmp_buf *oeljbufp;
volatile int ownsinfoi;
volatile long m;
volatile Tobj lrtno;
jmp_buf eljbuf;
#if 0
if (running && !Eoktorun) {
err(ERRRECRUN, ERR2, NULL, 0);
return NULL;
}
#endif
Eoktorun = FALSE;
if (!co)
return NULL;
if (Tgettype(co) != T_CODE)
panic1(POS, "Eunit", "argument type is not T_CODE");
m = Mpushmark(co);
PUSHJMP(oeljbufp, eljbufp, eljbuf);
ownsinfoi = sinfoi++;
if (sinfoi == sinfon) {
sinfop =
Marraygrow(sinfop, (long) (sinfon + SINFOINCR) * SINFOSIZE);
sinfon += SINFOINCR;
}
sinfop[ownsinfoi].co = co;
sinfop[ownsinfoi].ci = TCgetfp(co, 0);
sinfop[ownsinfoi].fco = NULL;
sinfop[ownsinfoi].flvari = flvari;
sinfop[ownsinfoi].llvari = llvari;
running++;
if (setjmp(*eljbufp))
lrtno = NULL;
else
lrtno = eeval(co, TCgetfp(co, 0));
running--;
rtno = NULL;
flvari = sinfop[ownsinfoi].flvari;
llvari = sinfop[ownsinfoi].llvari;
sinfoi = ownsinfoi;
POPJMP(oeljbufp, eljbufp);
Mpopmark(m);
Erun = TRUE;
return lrtno;
}
static int getvar(Tobj co, int ci, tnk_t * tnkp)
{
Tobj cvo, cko, cto;
Ctype_t ct, vt;
long m;
int vi, ovi, nn, ni;
if ((ct = TCgettype(co, ci)) == C_LVAR) {
nn = (int) TCgetinteger(co, (ni = TCgetnext(co, TCgetfp(co, ci))));
cvo = cto = lvarp[flvari + nn].o;
vi = TCgetnext(co, ni);
if (vi != C_NULL && (!cvo || Tgettype(cvo) != T_TABLE))
Mresetmark(lvarp[flvari + nn].m,
(lvarp[flvari + nn].o = cvo = cto = Ttable(0)));
} else if (ct == C_GVAR) { /* else it's a global variable */
cvo = root;
vi = TCgetfp(co, ci);
} else {
return -1;
}
ovi = -1;
while (vi != C_NULL) {
cto = cvo;
if ((vt = TCgettype(co, vi)) == C_STRING) {
cvo = Tfinds(cto, TCgetstring(co, vi));
} else if (vt == C_INTEGER) {
cvo = Tfindi(cto, TCgetinteger(co, vi));
} else if (vt == C_REAL) {
cvo = Tfindr(cto, TCgetreal(co, vi));
} else {
if (!(cko = eeval(co, vi)) || !(T_ISSTRING(cko) ||
T_ISNUMBER(cko)))
return -1;
cvo = Tfindo(cto, cko);
}
ovi = vi, vi = TCgetnext(co, vi);
if (vi != C_NULL && (!cvo || Tgettype(cvo) != T_TABLE)) {
if (vt == C_STRING)
Tinss(cto, TCgetstring(co, ovi), (cvo = Ttable(0)));
else if (vt == C_INTEGER)
Tinsi(cto, TCgetinteger(co, ovi), (cvo = Ttable(0)));
else if (vt == C_REAL)
Tinsr(cto, TCgetreal(co, ovi), (cvo = Ttable(0)));
else
m = Mpushmark(cko), Tinso(cto, cko, (cvo = Ttable(0))),
Mpopmark(m);
}
}
if (ct == C_LVAR && ovi == -1) {
tnkp->type = TNK_LI;
tnkp->u.li = nn;
} else {
switch (vt) {
case C_STRING:
case C_INTEGER:
case C_REAL:
tnkp->type = TNK_S;
tnkp->u.tnks.kt = vt;
tnkp->u.tnks.to = cto;
tnkp->u.tnks.co = co;
tnkp->u.tnks.vi = ovi;
break;
default:
tnkp->type = TNK_O;
tnkp->u.tnko.to = cto;
tnkp->u.tnko.ko = cko;
break;
}
}
return 0;
}
static Tobj efcall(Tobj co, int ci)
{
volatile jmp_buf *opljbufp1, *opljbufp2;
volatile long m;
volatile int bi, ownsinfoi, li, ln;
jmp_buf pljbuf;
Tobj fdo, vo, lrtno;
int i, fci, ai, di, di1, fid;
ownsinfoi = sinfoi++;
if (sinfoi == sinfon) {
sinfop =
Marraygrow(sinfop, (long) (sinfon + SINFOINCR) * SINFOSIZE);
sinfon += SINFOINCR;
}
sinfop[ownsinfoi].co = co;
sinfop[ownsinfoi].ci = ci;
sinfop[ownsinfoi].fco = NULL;
sinfop[ownsinfoi].flvari = flvari;
sinfop[ownsinfoi].llvari = llvari;
fci = TCgetfp(co, ci);
if (!(fdo = getval(co, fci)) || Tgettype(fdo) != T_CODE) {
err(ERRNOSUCHFUNC, ERR2, co, fci);
sinfoi = ownsinfoi;
return NULL;
}
m = Mpushmark((Tobj) fdo);
ai = TCgetfp(co, TCgetnext(co, fci));
ln = (int) TCgetinteger(fdo, (li = TCgetnext(fdo, TCgetfp(fdo, 0))));
di = TCgetnext(fdo, li);
bi = TCgetnext(fdo, di);
if (bi != C_NULL && TCgettype(fdo, bi) == C_INTERNAL) {
for (i = 0; ai != C_NULL; ai = TCgetnext(co, ai), i++) {
if (!(vo = eeval(co, ai))) {
err(ERRBADARG, ERR2, co, ai);
Mpopmark(m);
llvari = sinfop[ownsinfoi].llvari;
sinfoi = ownsinfoi;
return NULL;
}
if (llvari + 1 > lvarn) {
lvarp = Marraygrow(lvarp, (long) (llvari + 1) * LVARSIZE);
lvarn = llvari + 1;
}
lvarp[llvari].m = Mpushmark((lvarp[llvari].o = vo));
llvari++;
}
fid = (int) TCgetinteger(fdo, TCgetfp(fdo, bi));
if (Ifuncs[fid].min > i || Ifuncs[fid].max < i) {
err(ERRARGMIS, ERR2, co, ci);
Mpopmark(m);
llvari = sinfop[ownsinfoi].llvari;
sinfoi = ownsinfoi;
return NULL;
}
flvari = sinfop[ownsinfoi].llvari;
sinfop[ownsinfoi].fco = fdo;
sinfop[ownsinfoi].fci = bi;
if (fid < 0 || fid >= Ifuncn)
panic1(POS, "efcall", "no such internal function: %d", fid);
rtno = Ttrue;
if ((*Ifuncs[fid].func) (i, &lvarp[flvari]) == L_FAILURE) {
rtno = NULL;
err(ERRIFUNCERR, ERR2, co, ci);
}
} else {
if (llvari + ln > lvarn) {
lvarp = Marraygrow(lvarp, (long) (llvari + ln) * LVARSIZE);
lvarn = llvari + ln;
}
di1 = TCgetfp(fdo, di);
for (i = 0; i < ln && di1 != C_NULL && ai != C_NULL;
i++, ai = TCgetnext(co, ai)) {
if (!(vo = eeval(co, ai))) {
err(ERRBADARG, ERR2, co, ai);
Mpopmark(m);
llvari = sinfop[ownsinfoi].llvari;
sinfoi = ownsinfoi;
return NULL;
}
lvarp[llvari].m = Mpushmark((lvarp[llvari].o = vo));
llvari++;
di1 = TCgetnext(fdo, di1);
}
if (di1 != C_NULL || ai != C_NULL) {
err(ERRARGMIS, ERR2, co, ci);
Mpopmark(m);
llvari = sinfop[ownsinfoi].llvari;
sinfoi = ownsinfoi;
return NULL;
}
for (; i < ln; i++, llvari++)
lvarp[llvari].m = Mpushmark((lvarp[llvari].o = NULL));
flvari = sinfop[ownsinfoi].llvari;
PUSHJMP(opljbufp2, pljbufp2, pljbuf);
opljbufp1 = (volatile jmp_buf *) pljbufp1;
if (setjmp(*pljbufp2)) {
;
} else {
sinfop[ownsinfoi].fco = fdo;
for (; bi != C_NULL; bi = TCgetnext(fdo, bi)) {
sinfop[ownsinfoi].fci = bi;
if (TCgettype(fdo, bi) != C_DECL)
eeval((Tobj) fdo, bi);
}
}
POPJMP(opljbufp2, pljbufp2);
pljbufp1 = (jmp_buf *) opljbufp1;
}
flvari = sinfop[ownsinfoi].flvari;
llvari = sinfop[ownsinfoi].llvari;
sinfoi = ownsinfoi;
Mpopmark(m);
lrtno = rtno, rtno = NULL;
errdo = TRUE;
return lrtno;
}
static Tobj eeval(Tobj co, int ci)
{
Tobj v1o, v2o, v3o;
Ttype_t ttype;
Ctype_t ctype;
tnk_t tnk;
num_tt lnum, rnum;
long m1, m2;
int i1, i2, res;
tailrec:
errdo = TRUE;
v1o = NULL;
ctype = TCgettype(co, ci);
switch (ctype) {
case C_ASSIGN:
i1 = TCgetfp(co, ci);
if ((v1o = eeval(co, TCgetnext(co, i1))) == NULL) {
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
return NULL;
}
m1 = Mpushmark(v1o);
res = getvar(co, i1, &tnk);
Mpopmark(m1);
if (res == -1) {
err(ERRNOLHS, ERR3, co, i1);
return NULL;
}
setvar(tnk, v1o);
return v1o;
case C_OR:
case C_AND:
case C_NOT:
i1 = TCgetfp(co, ci);
if ((v1o = eeval(co, i1)) == NULL)
err(ERRNORHS, ERR4, co, i1);
switch (ctype) {
case C_OR:
if (boolop(v1o) == TRUE)
return Ttrue;
if ((v1o = eeval(co, TCgetnext(co, i1))) == NULL)
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
return (boolop(v1o) == TRUE) ? Ttrue : Tfalse;
case C_AND:
if (boolop(v1o) == FALSE)
return Tfalse;
if ((v1o = eeval(co, TCgetnext(co, i1))) == NULL)
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
return (boolop(v1o) == FALSE) ? Tfalse : Ttrue;
case C_NOT:
return (boolop(v1o) == TRUE) ? Tfalse : Ttrue;
}
/* NOT REACHED */
return Tfalse;
case C_EQ:
case C_NE:
case C_LT:
case C_LE:
case C_GT:
case C_GE:
i1 = TCgetfp(co, ci);
if ((v1o = eeval(co, i1)) == NULL)
err(ERRNORHS, ERR4, co, i1);
else
m1 = Mpushmark(v1o);
if ((v2o = eeval(co, TCgetnext(co, i1))) == NULL)
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
if (v1o)
Mpopmark(m1);
return (orderop(v1o, ctype, v2o) == TRUE) ? Ttrue : Tfalse;
case C_PLUS:
case C_MINUS:
case C_MUL:
case C_DIV:
case C_MOD:
case C_UMINUS:
i1 = TCgetfp(co, ci);
if ((lnum.type = TCgettype(co, i1)) == C_INTEGER)
lnum.u.i = TCgetinteger(co, i1);
else if (lnum.type == C_REAL)
lnum.u.d = TCgetreal(co, i1);
else if ((lnum.u.no = eeval(co, i1)) == NULL) {
err(ERRNORHS, ERR4, co, i1);
return NULL;
}
if (ctype == C_UMINUS) {
if (!(v1o = arithop(&lnum, ctype, NULL)))
err(ERRNORHS, ERR4, co, ci);
return v1o;
}
if (lnum.type != C_INTEGER && lnum.type != C_REAL)
m1 = Mpushmark(lnum.u.no);
i1 = TCgetnext(co, i1);
if ((rnum.type = TCgettype(co, i1)) == C_INTEGER)
rnum.u.i = TCgetinteger(co, i1);
else if (rnum.type == C_REAL)
rnum.u.d = TCgetreal(co, i1);
else if ((rnum.u.no = eeval(co, i1)) == NULL)
err(ERRNORHS, ERR4, co, i1);
if (lnum.type != C_INTEGER && lnum.type != C_REAL)
Mpopmark(m1);
if (!(v1o = arithop(&lnum, ctype, &rnum)))
err(ERRNORHS, ERR4, co, ci);
return v1o;
case C_PEXPR:
ci = TCgetfp(co, ci);
goto tailrec;
case C_FCALL:
return efcall(co, ci);
case C_INTEGER:
return Tinteger(TCgetinteger(co, ci));
case C_REAL:
return Treal(TCgetreal(co, ci));
case C_STRING:
return Tstring(TCgetstring(co, ci));
case C_GVAR:
case C_LVAR:
case C_PVAR:
return getval(co, ci);
case C_FUNCTION:
return Tcode(TCgetaddr(co, ci), ci,
(int) TCgetinteger(co, TCgetfp(co, ci)));
case C_TCONS:
v1o = Ttable(0);
m1 = Mpushmark(v1o);
for (i1 = TCgetfp(co, ci); i1 != C_NULL;
i1 = TCgetnext(co, TCgetnext(co, i1))) {
if (!(v3o = eeval(co, TCgetnext(co, i1)))) {
err(ERRNORHS, ERR4, co, TCgetnext(co, i1));
continue;
}
m2 = Mpushmark(v3o);
if (!(v2o = eeval(co, i1))) {
err(ERRNOLHS, ERR3, co, i1);
Mpopmark(m2);
continue;
}
ttype = Tgettype(v2o);
if (ttype == T_INTEGER || ttype == T_REAL || ttype == T_STRING)
Tinso(v1o, v2o, v3o);
else
err(ERRNOLHS, ERR1, co, i1);
}
Mpopmark(m1);
return v1o;
case C_STMT:
for (i1 = TCgetfp(co, ci); i1 != C_NULL;)
if ((i2 = TCgetnext(co, i1)) != C_NULL) {
eeval(co, i1);
i1 = i2;
} else {
ci = i1;
goto tailrec;
}
/* NOT REACHED */
break;
case C_IF:
i1 = TCgetfp(co, ci);
if (!(v1o = eeval(co, i1)))
err(ERRNORHS, ERR5, co, i1);
if (boolop(v1o) == TRUE) {
ci = TCgetnext(co, i1);
goto tailrec;
} else if ((ci = TCgetnext(co, TCgetnext(co, i1))) != C_NULL)
goto tailrec;
break;
case C_WHILE:
ewhilest(co, ci);
break;
case C_FOR:
eforst(co, ci);
break;
case C_FORIN:
eforinst(co, ci);
break;
case C_BREAK:
pljtype = PLJ_BREAK;
longjmp(*pljbufp1, 1);
/* NOT REACHED */
break;
case C_CONTINUE:
pljtype = PLJ_CONTINUE;
longjmp(*pljbufp1, 1);
/* NOT REACHED */
break;
case C_RETURN:
if ((i1 = TCgetfp(co, ci)) != C_NULL)
rtno = eeval(co, i1);
pljtype = PLJ_RETURN;
longjmp(*pljbufp2, 1);
/* NOT REACHED */
break;
default:
panic1(POS, "eeval", "unknown program token type %d", ctype);
}
return v1o;
}
int Isplit (int argc, lvar_t *argv) {
Tobj so, fo;
char *sp, *sp2, *s;
char fc, tc, qmode;
long rtnm, rtni;
int bufi, qflag;
if (
Tgettype ((so = argv[0].o)) != T_STRING ||
Tgettype ((fo = argv[1].o)) != T_STRING
)
return L_FAILURE;
qflag = (argc == 3) ? FALSE : TRUE;
sp = Tgetstring (so);
s = Tgetstring (fo);
if (s[0] == '\\' && s[1] == 'n')
fc = '\n';
else
fc = s[0];
rtno = Ttable (4);
rtnm = Mpushmark (rtno);
rtni = 0;
if (s[0] == 0) {
for (sp2 = sp; *sp2; sp2++) {
tc = *(sp2 + 1), *(sp2 + 1) = '\000';
Tinsi (rtno, rtni++, Tstring (sp2));
*(sp2 + 1) = tc;
}
} else if (qflag && (fc == ' ' || fc == ' ')) {
while (*sp == fc)
sp++;
while (*sp) {
bufi = 0;
qmode = 0;
for (sp2 = sp; *sp2; sp2++) {
if (bufi == bufn)
growbufp (bufn + BUFINCR);
if (*sp2 == '"' || *sp2 == '\'') {
if (qmode) {
if (qmode == *sp2)
qmode = 0;
else
bufp[bufi++] = *sp2;
} else
qmode = *sp2;
} else if (*sp2 == fc && !qmode)
break;
else
bufp[bufi++] = *sp2;
}
if (bufi == bufn)
growbufp (bufn + BUFINCR);
bufp[bufi] = 0;
Tinsi (rtno, rtni++, Tstring (bufp));
while (*sp2 == fc)
sp2++;
sp = sp2;
}
} else {
while (*sp) {
for (sp2 = sp; *sp2 && *sp2 != fc; sp2++)
;
tc = *sp2, *sp2 = '\000';
Tinsi (rtno, rtni++, Tstring (sp));
*sp2 = tc;
if (*sp2) {
sp2++;
if (!*sp2)
Tinsi (rtno, rtni++, Tstring (""));
}
sp = sp2;
}
}
Mpopmark (rtnm);
return L_SUCCESS;
}
