home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
CICA 1995 May
/
cica_0595_4.zip
/
cica_0595_4
/
UTIL
/
MSWSRC35
/
LISTS.CPP
< prev
next >
Wrap
C/C++ Source or Header
|
1993-08-19
|
15KB
|
715 lines
/*
* lists.c logo list functions module dvb
*
* Copyright (C) 1989 The Regents of the University of California
* This Software may be copied and distributed for educational,
* research, and not for profit purposes provided that this
* copyright and statement are included in all such copies.
*/
#include "logo.h"
#include "globals.h"
typedef char *(*kludge_type)(char *, char *, int);
NODE *bfable_arg(NODE *args)
{
NODE *arg = car(args);
while ((arg == NIL || arg == UNBOUND || arg == Null_Word ||
nodetype(arg) == ARRAY) && NOT_THROWING) {
setcar(args, err_logo(BAD_DATA, arg));
arg = car(args);
}
return arg;
}
NODE *list_arg(NODE *args)
{
NODE *arg = car(args);
while (!(arg == NIL || is_list(arg)) && NOT_THROWING) {
setcar(args, err_logo(BAD_DATA, arg));
arg = car(args);
}
return arg;
}
NODE *lbutfirst(NODE *args)
{
NODE *val = UNBOUND, *arg;
arg = bfable_arg(args);
if (NOT_THROWING) {
if (is_list(arg))
val = cdr(arg);
else {
setcar(args, cnv_node_to_strnode(arg));
arg = car(args);
if (getstrlen(arg) > 1)
val = make_strnode(getstrptr(arg) + 1,
getstrhead(arg),
getstrlen(arg) - 1,
nodetype(arg),
strnzcpy);
else
val = Null_Word;
}
}
return(val);
}
NODE *lbutlast(NODE *args)
{
NODE *val = UNBOUND, *lastnode, *tnode, *arg;
arg = bfable_arg(args);
if (NOT_THROWING) {
if (is_list(arg)) {
args = arg;
val = NIL;
while (cdr(args) != NIL) {
tnode = cons(car(args), NIL);
if (val == NIL) {
val = tnode;
lastnode = tnode;
} else {
setcdr(lastnode, tnode);
lastnode = tnode;
}
args = cdr(args);
if (check_throwing) break;
}
} else {
setcar(args, cnv_node_to_strnode(arg));
arg = car(args);
if (getstrlen(arg) > 1)
val = make_strnode(getstrptr(arg),
getstrhead(arg),
getstrlen(arg) - 1,
nodetype(arg),
strnzcpy);
else
val = Null_Word;
}
}
return(val);
}
NODE *lfirst(NODE *args)
{
NODE *val = UNBOUND, *arg;
if (nodetype(car(args)) == ARRAY) {
return make_intnode((FIXNUM)getarrorg(car(args)));
}
arg = bfable_arg(args);
if (NOT_THROWING) {
if (is_list(arg))
val = car(arg);
else {
setcar(args, cnv_node_to_strnode(arg));
arg = car(args);
val = make_strnode(getstrptr(arg), getstrhead(arg), 1,
nodetype(arg), strnzcpy);
}
}
return(val);
}
NODE *lfirsts(NODE *args)
{
NODE *val = UNBOUND, *arg, *argp, *tail;
arg = list_arg(args);
if (car(args) == NIL) return(NIL);
if (NOT_THROWING) {
val = cons(lfirst(arg), NIL);
tail = val;
for (argp = cdr(arg); argp != NIL; argp = cdr(argp)) {
setcdr(tail, cons(lfirst(argp), NIL));
tail = cdr(tail);
if (check_throwing) break;
}
if (stopping_flag == THROWING) {
gcref(val);
return UNBOUND;
}
}
return(val);
}
NODE *lbfs(NODE *args)
{
NODE *val = UNBOUND, *arg, *argp, *tail;
arg = list_arg(args);
if (car(args) == NIL) return(NIL);
if (NOT_THROWING) {
val = cons(lbutfirst(arg), NIL);
tail = vref(val);
for (argp = cdr(arg); argp != NIL; argp = cdr(argp)) {
setcdr(tail, cons(lbutfirst(argp), NIL));
tail = cdr(tail);
if (check_throwing) break;
}
if (stopping_flag == THROWING) {
gcref(val);
return UNBOUND;
}
}
return(val);
}
NODE *llast(NODE *args)
{
NODE *val = UNBOUND, *arg;
arg = bfable_arg(args);
if (NOT_THROWING) {
if (is_list(arg)) {
args = arg;
while (cdr(args) != NIL) {
args = cdr(args);
if (check_throwing) break;
}
val = car(args);
}
else {
setcar(args, cnv_node_to_strnode(arg));
arg = car(args);
val = make_strnode(getstrptr(arg) + getstrlen(arg) - 1,
getstrhead(arg), 1, nodetype(arg), strnzcpy);
}
}
return(val);
}
NODE *llist(NODE *args)
{
return(args);
}
NODE *lemptyp(NODE *arg)
{
return torf(car(arg) == NIL || car(arg) == Null_Word);
}
NODE *char_arg(NODE *args)
{
NODE *arg = car(args), *val;
val = cnv_node_to_strnode(arg);
while ((val == UNBOUND || getstrlen(val) != 1) && NOT_THROWING) {
gcref(val);
setcar(args, err_logo(BAD_DATA, arg));
arg = car(args);
val = cnv_node_to_strnode(arg);
}
setcar(args,val);
return(val);
}
NODE *lascii(NODE *args)
{
FIXNUM i;
NODE *val = UNBOUND, *arg;
arg = char_arg(args);
if (NOT_THROWING) {
i = (FIXNUM)clearparity(*getstrptr(arg)) & 0377;
val = make_intnode(i);
}
return(val);
}
NODE *lbackslashedp(NODE *args)
{
char i;
NODE *arg;
arg = char_arg(args);
if (NOT_THROWING) {
i = *getstrptr(arg);
return torf(getparity(i));
}
return(UNBOUND);
}
NODE *lchar(NODE *args)
{
NODE *val = UNBOUND, *arg;
char c;
arg = pos_int_arg(args);
if (NOT_THROWING) {
c = getint(arg);
val = make_strnode(&c, (char *)NULL, 1,
(getparity(c) ? STRING : BACKSLASH_STRING), strnzcpy);
}
return(val);
}
NODE *lcount(NODE *args)
{
int cnt = 0;
NODE *arg;
arg = car(args);
if (arg != NIL && arg != Null_Word) {
if (is_list(arg)) {
args = arg;
for (; args != NIL; cnt++) {
args = cdr(args);
if (check_throwing) break;
}
} else if (nodetype(arg) == ARRAY) {
cnt = getarrdim(arg);
} else {
setcar(args, cnv_node_to_strnode(arg));
cnt = getstrlen(car(args));
}
}
return(make_intnode((FIXNUM)cnt));
}
NODE *lfput(NODE *args)
{
NODE *lst, *arg;
arg = car(args);
lst = list_arg(cdr(args));
if (NOT_THROWING)
return cons(arg,lst);
else
return UNBOUND;
}
NODE *llput(NODE *args)
{
NODE *lst, *arg, *val = UNBOUND, *lastnode = NIL, *tnode = NIL;
arg = car(args);
lst = list_arg(cdr(args));
if (NOT_THROWING) {
val = NIL;
while (lst != NIL) {
tnode = cons(car(lst), NIL);
if (val == NIL) {
val = tnode;
} else {
setcdr(lastnode, tnode);
}
lastnode = tnode;
lst = cdr(lst);
if (check_throwing) break;
}
if (val == NIL)
val = cons(arg, NIL);
else
setcdr(lastnode, cons(arg, NIL));
}
return(val);
}
NODE *string_arg(NODE *args)
{
NODE *arg = car(args), *val;
val = cnv_node_to_strnode(arg);
while (val == UNBOUND && NOT_THROWING) {
gcref(val);
setcar(args, err_logo(BAD_DATA, arg));
arg = car(args);
val = cnv_node_to_strnode(arg);
}
setcar(args,val);
return(val);
}
NODE *lword(NODE *args)
{
NODE *val = NIL, *arg = NIL;
// NODE *tnode = NIL;
// NODE *lastnode = NIL;
int cnt = 0;
NODETYPES str_type = STRING;
if (args == NIL) return Null_Word;
val = args;
while (val != NIL && NOT_THROWING) {
arg = string_arg(val);
val = cdr(val);
if (NOT_THROWING) {
if (backslashed(arg))
str_type = VBAR_STRING;
cnt += getstrlen(arg);
}
}
if (NOT_THROWING)
val = make_strnode((char *)args, (char *)NULL,
cnt, str_type, (kludge_type)word_strnzcpy); /* kludge */
else
val = UNBOUND;
return(val);
}
NODE *lsentence(NODE *args)
{
NODE *tnode = NIL, *lastnode = NIL, *val = NIL, *arg = NIL;
while (args != NIL && NOT_THROWING) {
arg = car(args);
while (nodetype(arg) == ARRAY && NOT_THROWING) {
setcar(args, err_logo(BAD_DATA, arg));
arg = car(args);
}
args = cdr(args);
if (stopping_flag == THROWING) break;
if (is_list(arg)) {
while (arg != NIL && NOT_THROWING) {
tnode = cons(car(arg), NIL);
arg = cdr(arg);
if (val == NIL) val = tnode;
else setcdr(lastnode, tnode);
lastnode = tnode;
}
} else {
tnode = cons(arg, NIL);
if (val == NIL) val = tnode;
else setcdr(lastnode, tnode);
lastnode = tnode;
}
}
if (stopping_flag == THROWING) {
gcref(val);
return UNBOUND;
}
return(val);
}
NODE *lwordp(NODE *arg)
{
arg = car(arg);
return torf(arg != UNBOUND && !aggregate(arg));
}
NODE *llistp(NODE *arg)
{
arg = car(arg);
return torf(is_list(arg));
}
NODE *lnumberp(NODE *arg)
{
setcar(arg, cnv_node_to_numnode(car(arg)));
return torf(car(arg) != UNBOUND);
}
NODE *larrayp(NODE *arg)
{
return torf(nodetype(car(arg)) == ARRAY);
}
NODE *memberp_help(NODE *args, BOOLEAN notp)
{
NODE *obj1, *obj2;
// NODE *val;
int leng;
int caseig = (compare_node(valnode__caseobj(Caseignoredp),
Truex, TRUE) == 0);
// val = Falsex;
obj1 = car(args);
obj2 = cadr(args);
if (is_list(obj2)) {
while (obj2 != NIL && NOT_THROWING) {
if (equalp_help(obj1, car(obj2), caseig))
return (notp ? obj2 : Truex);
obj2 = cdr(obj2);
if (check_throwing) break;
}
return (notp ? NIL : Falsex);
}
else if (nodetype(obj2) == ARRAY) {
int len = getarrdim(obj2);
NODE **data = getarrptr(obj2);
if (notp)
err_logo(BAD_DATA_UNREC,obj2);
while (--len >= 0 && NOT_THROWING) {
if (equalp_help(obj1, *data++, caseig)) return Truex;
}
return Falsex;
} else {
NODE *tmp;
int i;
if (aggregate(obj1)) return (notp ? Null_Word : Falsex);
setcar (cdr(args), cnv_node_to_strnode(obj2));
obj2 = cadr(args);
setcar (args, cnv_node_to_strnode(obj1));
obj1 = car(args);
tmp = NIL;
if (obj1 != UNBOUND && obj2 != UNBOUND &&
getstrlen(obj1) <= getstrlen(obj2)) {
leng = getstrlen(obj2) - getstrlen(obj1);
setcar(cdr(args),make_strnode(getstrptr(obj2), getstrhead(obj2),
getstrlen(obj1), nodetype(obj2),
strnzcpy));
tmp = cadr(args);
for (i = 0; i <= leng; i++) {
if (equalp_help(obj1, tmp, caseig)) {
if (notp) {
setstrlen(tmp,leng+getstrlen(obj1)-i);
return tmp;
} else return Truex;
}
setstrptr(tmp, getstrptr(tmp) + 1);
}
}
return (notp ? Null_Word : Falsex);
}
}
NODE *lmemberp(NODE *args)
{
return(memberp_help(args, FALSE));
}
NODE *lmember(NODE *args)
{
return(memberp_help(args, TRUE));
}
NODE *integer_arg(NODE *args)
{
NODE *arg = car(args), *val;
val = cnv_node_to_numnode(arg);
while (nodetype(val) != INT && NOT_THROWING) {
gcref(val);
setcar(args, err_logo(BAD_DATA, arg));
arg = car(args);
val = cnv_node_to_numnode(arg);
}
setcar(args,val);
if (nodetype(val) == INT) return(val);
return UNBOUND;
}
FIXNUM int_arg(NODE *args)
{
NODE *arg =integer_arg(args);
if (NOT_THROWING) return getint(arg);
return 0;
}
NODE *litem(NODE *args)
{
int i;
NODE *obj, *val;
val = integer_arg(args);
obj = cadr(args);
while ((obj == NIL || obj == Null_Word) && NOT_THROWING) {
setcar(cdr(args), err_logo(BAD_DATA, obj));
obj = cadr(args);
}
if (NOT_THROWING) {
i = getint(val);
if (is_list(obj)) {
if (i <= 0) {
err_logo(BAD_DATA_UNREC, val);
return UNBOUND;
}
while (--i > 0) {
obj = cdr(obj);
if (obj == NIL) {
err_logo(BAD_DATA_UNREC, val);
return UNBOUND;
}
}
return car(obj);
}
else if (nodetype(obj) == ARRAY) {
i -= getarrorg(obj);
if (i < 0 || i >= getarrdim(obj)) {
err_logo(BAD_DATA_UNREC, val);
return UNBOUND;
}
return (getarrptr(obj))[i];
}
else {
if (i <= 0) {
err_logo(BAD_DATA_UNREC, val);
return UNBOUND;
}
setcar (cdr(args), cnv_node_to_strnode(obj));
obj = cadr(args);
if (i > getstrlen(obj)) {
err_logo(BAD_DATA_UNREC, val);
return UNBOUND;
}
return make_strnode(getstrptr(obj) + i - 1, getstrhead(obj),
1, nodetype(obj), strnzcpy);
}
}
return(UNBOUND);
}
int circular(NODE *arr, NODE *newx)
{
if (newx == NIL) return(0);
else if (nodetype(newx) == ARRAY) {
int i = getarrdim(newx);
NODE **p = getarrptr(newx);
if (newx == arr) return(1);
while (--i >= 0) {
if (circular(arr,*p++)) return(1);
}
return(0);
} else if (is_list(newx)) {
while (newx != NIL) {
if (circular(arr,car(newx))) return(1);
newx = cdr(newx);
}
return(0);
} else return(0);
}
NODE *setitem_helper(NODE *args, BOOLEAN safe)
{
int i;
NODE *obj, *val, *cont;
val = integer_arg(args);
obj = cadr(args);
while (nodetype(obj) != ARRAY && NOT_THROWING) {
setcar(cdr(args), err_logo(BAD_DATA, obj));
obj = cadr(args);
}
cont = car(cddr(args));
if (NOT_THROWING) {
i = getint(val);
if (safe) {
while (circular(obj,cont) && NOT_THROWING) {
setcar(cddr(args), err_logo(BAD_DATA, cont));
cont = car(cddr(args));
}
}
if (NOT_THROWING) {
i -= getarrorg(obj);
if (i < 0 || i >= getarrdim(obj))
err_logo(BAD_DATA_UNREC, val);
else {
val = (getarrptr(obj))[i];
(getarrptr(obj))[i] = vref(cont);
deref(val);
}
}
}
return(UNBOUND);
}
NODE *lsetitem(NODE *args) {
return setitem_helper(args, TRUE);
}
NODE *l_setitem(NODE *args) {
return setitem_helper(args, FALSE);
}
NODE *larray(NODE *args)
{
NODE *arg;
int d, o;
arg = pos_int_arg(args);
if (cdr(args) != NIL) o = int_arg(cdr(args));
else o = 1;
if (NOT_THROWING) {
d = getint(arg);
arg = make_array(d);
setarrorg(arg,o);
return arg;
}
return UNBOUND;
}
FLONUM float_arg(NODE *args)
{
NODE *arg = car(args), *val;
val = cnv_node_to_numnode(arg);
while (!is_number(val) && NOT_THROWING) {
gcref(val);
setcar(args, err_logo(BAD_DATA, arg));
arg = car(args);
val = cnv_node_to_numnode(arg);
}
setcar(args,val);
if (nodetype(val) == FLOAT) return getfloat(val);
if (nodetype(val) == INT) return (FLONUM)getint(val);
return 0.0;
}
NODE *lform(NODE *args)
{
FLONUM number;
int width, precision;
char result[100];
char format[20];
number = float_arg(args);
width = (int)int_arg(cdr(args));
if (width < 0) {
print_stringptr = format;
print_stringlen = 20;
ndprintf((FILE *)NULL,"%p\n",string_arg(cddr(args)));
*print_stringptr = '\0';
} else
precision = (int)int_arg(cddr(args));
if (NOT_THROWING) {
if (width >= 100) width = 99;
if (width < 0)
sprintf(result,format,number);
else
sprintf(result,"%*.*f",width,precision,number);
return(make_strnode(result, (char *)NULL, (int)strlen(result),
STRING, strnzcpy));
}
return(UNBOUND);
}
NODE *l_setfirst(NODE *args)
{
NODE *list, *newval;
list = car(args);
newval = cadr(args);
while (NOT_THROWING && (list == NIL || !is_list(list))) {
setcar(args, err_logo(BAD_DATA,list));
list = car(args);
}
setcar(list,newval);
return(UNBOUND);
}
NODE *l_setbf(NODE *args)
{
NODE *list, *newval;
list = car(args);
newval = cadr(args);
while (NOT_THROWING && (list == NIL || !is_list(list))) {
setcar(args, err_logo(BAD_DATA,list));
list = car(args);
}
setcdr(list,newval);
return(UNBOUND);
}