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superset.c
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/*
* superset builtin predicates
*/
#include <string.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include "npl.h"
int b_atom_concat(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, arg3, atom;
char str1[STRSIZE];
n = length(arglist);
ind = makeind("atom_concat", n, th);
if (n == 3) {
arg1 = car(arglist);
arg2 = cadr(arglist);
arg3 = caddr(arglist);
if (!wide_variable_p(arg1) && !atomp(arg1))
exception(NOT_ATOM, ind, arg1, th);
if (!wide_variable_p(arg2) && !atomp(arg2))
exception(NOT_ATOM, ind, arg2, th);
if (!wide_variable_p(arg3))
exception(NOT_VAR, ind, arg3, th);
if (strlen(GET_NAME(arg1)) + strlen(GET_NAME(arg2)) > STRSIZE)
exception(RESOURCE_ERR, ind, makestr("strsize"), th);
strcpy(str1, GET_NAME(arg1));
strcat(str1, GET_NAME(arg2));
atom = makeconst(str1);
if (unify(arg3, atom, th) == YES)
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_select(int arglist, int rest, int th)
{
int arg1, arg2, arg3, varYs, varY, varZs, varX, varXs, n, ind, body,
save1, save2;
save2 = sp[th];
n = length(arglist);
ind = makeind("select", n, th);
if (n == 3) {
arg1 = car(arglist);
arg2 = cadr(arglist);
arg3 = caddr(arglist);
varX = makevariant(th);
varXs = makevariant(th);
save1 = get_wp(th);
if (unify_var(arg1, varX, th) == YES
&& unify(wlistcons(varX, varXs, th), arg2, th) == YES
&& unify_var(arg3, varXs, th) == YES)
if (prove_all(rest, sp[th], th) == YES)
return (YES);
unbind(save2, th);
wp[th] = save1;
varX = makevariant(th);
varYs = makevariant(th);
varY = makevariant(th);
varZs = makevariant(th);
save1 = wp[th];
if (unify_var(arg1, varX, th) == YES
&& unify(wlistcons(varY, varYs, th), arg2, th) == YES
&& unify(wlistcons(varY, varZs, th), arg3, th) == YES) {
body =
wcons(makesys("select"),
wcons(varX, wcons(varYs, wcons(varZs, NIL, th), th),
th), th);
if (prove_all(addtail_body(rest, body, th), sp[th], th) == YES)
return (YES);
unbind(save2, th);
set_wp(save1, th);
}
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_succ(int arglist, int rest, int th)
{
int n, ind, arg1, arg2;
n = length(arglist);
ind = makeind("succ", n, th);
if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
if (wide_variable_p(arg1) && wide_variable_p(arg2))
exception(INSTANTATION_ERR, ind, arglist, th);
if (!wide_integer_p(arg1) && !wide_variable_p(arg1))
exception(NOT_INT, ind, arg1, th);
if (!wide_integer_p(arg2) && !wide_variable_p(arg2))
exception(NOT_INT, ind, arg2, th);
if (negativep(arg1))
exception(LESS_THAN_ZERO, ind, arg1, th);
if (negativep(arg2))
exception(LESS_THAN_ZERO, ind, arg2, th);
if (wide_integer_p(arg1)) {
if (unify(arg2, plus(arg1, makeint(1), th), th) == YES) {
if (prove_all(rest, sp[th], th) == YES)
return (YES);
else
return (NO);
}
} else if (wide_integer_p(arg2)) {
if (unify(arg1, minus(arg2, makeint(1), th), th) == YES) {
if (prove_all(rest, sp[th], th) == YES)
return (YES);
else
return (NO);
}
}
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_maplist(int arglist, int rest, int th)
{
int arg1, arg2, varE, varEs, varP, n, ind, pred, arg, body, save1,
save2;
save2 = sp[th];
pred = NIL;
n = length(arglist);
ind = makeind("maplist", n, th);
if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
if (!callablep(arg1))
exception(NOT_CALLABLE, ind, arg1, th);
if (!listp(arg2) && !nullp(arg2))
exception(NOT_LIST, ind, arg2, th);
if (listp(arg2) && length(arg2) == -1)
exception(WRONG_ARGS, ind, arg2, th);
varP = makevariant(th);
save1 = wp[th];
if (unify_var(varP, arg1, th) == YES && unify_nil(arg2, th) == YES)
if (prove_all(rest, sp[th], th) == YES)
return (YES);
unbind(save2, th);
wp[th] = save1;
varP = makevariant(th);
varE = makevariant(th);
varEs = makevariant(th);
save1 = wp[th];
if (unify_var(varP, arg1, th) == YES
&& unify(wlistcons(varE, varEs, th), arg2, th) == YES)
pred = deref(varP, th);
arg = deref(varE, th);
if (structurep(pred))
pred = wappend(pred, wlist1(arg, th), th);
else
pred = wlist2(pred, arg, th);
pred = list_to_structure(pred);
if (!callablep(pred))
exception(NOT_CALLABLE, ind, pred, th);
if (prove_all(pred, sp[th], th) == NO) {
unbind(save2, th);
wp[th] = save1;
return (NO);
}
body =
wcons(makesys("maplist"),
wcons(varP, wcons(varEs, NIL, th), th), th);
if (prove_all(addtail_body(rest, body, th), sp[th], th) == YES)
return (YES);
unbind(save2, th);
wp[th] = save1;
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_once(int arglist, int rest, int th)
{
int n, ind, arg1;
n = length(arglist);
ind = makeind("once", n, th);
if (n == 1) {
arg1 = car(arglist);
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (!callablep(arg1))
exception(NOT_CALLABLE, ind, arg1, th);
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (atom_constant_p(arg1))
arg1 = makeatom(GET_NAME(arg1), PRED);
if (prove_all(arg1, sp[th], th) == YES)
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_compound(int arglist, int rest, int th)
{
int n, ind, arg1;
n = length(arglist);
ind = makeind("compound", n, th);
if (n == 1) {
arg1 = car(arglist);
if (compoundp(arg1))
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_ground(int arglist, int rest, int th)
{
int n, ind, arg1;
n = length(arglist);
ind = makeind("ground", n, th);
if (n == 1) {
arg1 = car(arglist);
if (groundp(arg1))
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_member(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, x, y, l, save1, save2, body, res;
save2 = sp[th];
res = NIL;
n = length(arglist);
ind = makeind("member", n, th);
if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
if (nullp(arg2))
return (NO);
save1 = wp[th];
x = makevariant(th);
l = makevariant(th);
if (unify(arg1, x, th) == YES
&& unify(arg2, wlistcons(x, l, th), th) == YES) {
if ((res = prove(NIL, sp[th], rest, th)) == YES)
return (YES);
}
wp[th] = save1;
unbind(save2, th);
if (res == NFALSE)
return (res);
save1 = wp[th];
x = makevariant(th);
y = makevariant(th);
l = makevariant(th);
if (unify(arg1, x, th) == YES
&& unify(arg2, wlistcons(y, l, th), th) == YES) {
body = wlist3(makeatom("member", SYS), x, l, th);
if ((res = prove(body, sp[th], rest, th)) == YES)
return (YES);
}
wp[th] = save1;
unbind(save2, th);
return (res);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
//---------extention--------
int b_append(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, arg3, x, ls, ys, zs, save1, save2, body;
save2 = sp[th];
body = NIL;
n = length(arglist);
ind = makeind("append", n, th);
if (n == 3) {
arg1 = car(arglist);
arg2 = cadr(arglist);
arg3 = caddr(arglist);
if (!listp(arg1) && !nullp(arg1) && !wide_variable_p(arg1))
exception(NOT_LIST, ind, arg1, th);
if (!listp(arg2) && !nullp(arg2) && !wide_variable_p(arg2))
exception(NOT_LIST, ind, arg2, th);
if (!listp(arg3) && !nullp(arg3) && !wide_variable_p(arg3))
exception(NOT_LIST, ind, arg3, th);
save1 = wp[th];
if (unify_nil(arg1, th) == YES && unify(arg2, arg3, th) == YES) {
if (prove(NIL, sp[th], rest, th) == YES)
return (YES);
else
return (NO);
}
wp[th] = save1;
unbind(save2, th);
save1 = wp[th];
x = makevariant(th);
ls = makevariant(th);
ys = makevariant(th);
zs = makevariant(th);
if (unify_pair(arg1, wlistcons(x, ls, th), th) == YES &&
unify_var(arg2, ys, th) == YES
&& unify_pair(arg3, wlistcons(x, zs, th), th) == YES) {
body = wlist4(makeatom("append", SYS), ls, ys, zs, th);
if (prove(body, sp[th], rest, th) == YES)
return (YES);
}
wp[th] = save1;
unbind(save2, th);
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_between(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, arg3, save1, save2, save3, low, high,
betweenval;
n = length(arglist);
ind = makeind("between", n, th);
if (n == 3) {
arg1 = car(arglist); //low
arg2 = cadr(arglist); //high
arg3 = caddr(arglist); //variable
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (wide_variable_p(arg2))
exception(INSTANTATION_ERR, ind, arg2, th);
if (!wide_variable_p(arg1) && !integerp(arg1))
exception(NOT_INT, ind, arg1, th);
if (!wide_variable_p(arg2) && !integerp(arg2))
exception(NOT_INT, ind, arg2, th);
if (!wide_variable_p(arg3) && !integerp(arg3))
exception(NOT_INT, ind, arg3, th);
save1 = wp[th];
save2 = sp[th];
save3 = ac[th];
low = get_int(arg1);
high = get_int(arg2);
if (groundp(arg3)) {
betweenval = get_int(arg3);
if (betweenval >= low && betweenval <= high) {
if (prove_all(rest, sp[th], th) == YES)
return (YES);
}
return (NO);
}
while (low <= high) {
//printf("%d",low);
unify(arg3, makeint(low), th);
if (prove_all(rest, sp[th], th) == YES)
return (YES);
low++;
wp[th] = save1;
unbind(save2, th);
ac[th] = save3;
}
wp[th] = save1;
unify(arg3, arg2, th);
ac[th] = save3;
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_bagof(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, arg3, save1, save2, free, vars, nonfree, goal,
lis;
n = length(arglist);
ind = makeind("bagof", n, th);
if (n == 3) {
arg1 = car(arglist);
arg2 = cadr(arglist);
arg3 = caddr(arglist);
save1 = wp[th];
save2 = sp[th];
vars = listreverse(unique(varslist(arg2)));
free = get_free(arg2);
nonfree = get_nonfree(vars, free, arg1);
goal = get_goal(arg2);
goal =
addtail_body(list2(makesys("%bagofhelper"), arg1), goal, th);
bag_list = NIL;
nonfree_list = nonfree;
prove_all(goal, sp[th], th);
lis = reverse(bag_list);
while (!nullp(lis)) {
apply_unify(caar(lis));
unify(arg3, listreverse(cdar(lis)), th);
if (prove_all(rest, sp[th], th) == YES)
return (YES);
wp[th] = save1;
unbind(save2, th);
lis = cdr(lis);
}
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_setof(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, arg3, save1, save2, free, vars, nonfree, goal,
lis;
n = length(arglist);
ind = makeind("setof", n, th);
if (n == 3) {
arg1 = car(arglist);
arg2 = cadr(arglist);
arg3 = caddr(arglist);
save1 = wp[th];
save2 = sp[th];
vars = listreverse(unique(varslist(arg2)));
free = get_free(arg2);
nonfree = get_nonfree(vars, free, arg1);
goal = get_goal(arg2);
goal =
addtail_body(list2(makesys("%bagofhelper"), arg1), goal, th);
bag_list = NIL;
nonfree_list = nonfree;
prove_all(goal, sp[th], th);
lis = reverse(bag_list);
while (!nullp(lis)) {
apply_unify(caar(lis));
unify(arg3, sort(remove_duplicate(cdar(lis))), th);
if (prove_all(rest, sp[th], th) == YES)
return (YES);
wp[th] = save1;
unbind(save2, th);
lis = cdr(lis);
}
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_findall(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, arg3, save1, save2, goal;
n = length(arglist);
ind = makeind("findall", n, th);
if (n == 3) {
arg1 = car(arglist);
arg2 = cadr(arglist);
arg3 = caddr(arglist);
save1 = wp[th];
save2 = sp[th];
goal = get_goal(arg2);
goal =
addtail_body(list2(makesys("%bagofhelper"), arg1), goal, th);
bag_list = NIL;
nonfree_list = NIL;
prove_all(goal, sp[th], th);
unify(arg3, listreverse(cdar(bag_list)), th);
if (prove_all(rest, sp[th], th) == YES)
return (YES);
wp[th] = save1;
unbind(save2, th);
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
/*
X^Y^foo(Z) == ^(X,^(Y,foo(Z))) -> [X,Y]
*/
int get_free(int x)
{
if (car(x) == makeope("^"))
return (listcons(cadr(x), get_free(caddr(x))));
else
return (NIL);
}
/*
X^Y^foo(Z) == ^(X,^(Y,foo(Z))) -> foo(Z)
*/
int get_goal(int x)
{
if (car(x) == makeope("^"))
return (get_goal(caddr(x)));
else
return (x);
}
/*
x = [A,B,C] y = [C] -> [A,B]
*/
int get_nonfree(int x, int y, int z)
{
if (nullp(x))
return (NIL);
else if (eqlp(car(x), z))
return (get_nonfree(cdr(x), y, z));
else if (memq(car(x), y))
return (get_nonfree(cdr(x), y, z));
else
return (listcons(car(x), get_nonfree(cdr(x), y, z)));
}
/*
key = ((A.1)(B.2)) -> unify(A,1) unify(B,2)
*/
void apply_unify(int x)
{
int lis;
lis = x;
while (!nullp(lis)) {
unify(caar(lis), cdar(lis), 0);
lis = cdr(lis);
}
}
int b_bagofhelper(int arglist, int rest, int th)
{
int n, arg1, nonfree, key;
n = length(arglist);
if (n == 1) {
arg1 = car(arglist); //target var
nonfree = nonfree_list;
key = NIL;
while (!nullp(nonfree)) {
key = cons(cons(car(nonfree), deref(car(nonfree), th)), key);
nonfree = cdr(nonfree);
}
putinbag(key, deref(arg1, th));
return (NO);
}
return (NO);
}
/*
bag data structure
((key1 . data1)(key2 . data2)...)
key = ((var1 . val1)(var2 . val2)...)
data = [a,b,a,d...]
*/
void putinbag(int key, int data)
{
int lis;
lis = bag_list;
while (!nullp(lis)) {
if (equalp(key, caar(lis))) {
SET_CDR(car(lis), listcons(data, cdar(lis)));
return;
}
lis = cdr(lis);
}
bag_list = cons(cons(key, listcons(data, NIL)), bag_list);
}
int takeoutbug(int key)
{
int lis;
lis = bag_list;
while (!nullp(lis)) {
if (equalp(key, caar(lis))) {
return (cdar(lis));
}
lis = cdr(lis);
}
return (NIL);
}
int b_atom_length(int arglist, int rest, int th)
{
int n, ind, arg1, arg2;
n = length(arglist);
ind = makeind("atom_length", n, th);
if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
if (!atomp(arg1))
exception(NOT_ATOM, ind, arg1, th);
if (!wide_variable_p(arg2) && !integerp(arg2))
exception(NOT_INT, ind, arg2, th);
if (unify(arg2, makeint(atom_length(arg1)), th) == YES)
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_get_code(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, c, i, res;
char str[10];
n = length(arglist);
ind = makeind("get_code", n, th);
if (n == 1) {
arg1 = input_stream;
arg2 = car(arglist);
goto get_code;
} else if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
get_code:
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (!wide_variable_p(arg2) && !integerp(arg2))
exception(NOT_INT, ind, arg2, th);
if (!streamp(arg1) && !aliasp(arg1))
exception(NOT_STREAM, ind, arg1, th);
if (aliasp(arg1))
arg1 = GET_CAR(arg1);
c = getc(GET_PORT(arg1));
if (isUni2(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = NUL;
i = utf8_to_ucs4(str);
} else if (isUni3(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = NUL;
i = utf8_to_ucs4(str);
} else if (isUni4(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = getc(GET_PORT(arg1));
str[4] = NUL;
i = utf8_to_ucs4(str);
} else if (isUni5(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = getc(GET_PORT(arg1));
str[4] = getc(GET_PORT(arg1));
str[5] = NUL;
i = utf8_to_ucs4(str);
} else if (isUni6(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = getc(GET_PORT(arg1));
str[4] = getc(GET_PORT(arg1));
str[5] = getc(GET_PORT(arg1));
str[6] = NUL;
i = utf8_to_ucs4(str);
} else {
i = c;
}
res = NIL;
if (c == EOF)
res = unify(arg2, makeconst("end_of_file"), th);
else
res = unify(arg2, makeint(i), th);
if (res == YES)
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_get_char(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, c, res;
char str[10];
n = length(arglist);
ind = makeind("get_char", n, th);
if (n == 1) {
arg1 = input_stream;
arg2 = car(arglist);
goto get_char;
} else if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
get_char:
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (!wide_variable_p(arg2) && !atomp(arg2))
exception(NOT_INT, ind, arg2, th);
if (!streamp(arg1) && !aliasp(arg1))
exception(NOT_STREAM, ind, arg1, th);
if (aliasp(arg1))
arg1 = GET_CAR(arg1);
c = getc(GET_PORT(arg1));
str[0] = c;
if (isUni2(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = NUL;
} else if (isUni3(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = NUL;
} else if (isUni4(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = getc(GET_PORT(arg1));
str[4] = NUL;
} else if (isUni5(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = getc(GET_PORT(arg1));
str[4] = getc(GET_PORT(arg1));
str[5] = NUL;
} else if (isUni6(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
str[3] = getc(GET_PORT(arg1));
str[4] = getc(GET_PORT(arg1));
str[5] = getc(GET_PORT(arg1));
str[6] = NUL;
} else {
str[1] = NUL;
}
res = NIL;
if (c == EOF)
res = unify(arg2, makeconst("end_of_file"), th);
else
res = unify(arg2, makeconst(str), th);
if (res == YES)
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_get_byte(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, c, res;
n = length(arglist);
ind = makeind("get_byte", n, th);
if (n == 1) {
arg1 = input_stream;
arg2 = car(arglist);
goto get_byte;
} else if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
get_byte:
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (!wide_variable_p(arg2) && !integerp(arg2))
exception(NOT_INT, ind, arg2, th);
if (!streamp(arg1) && !aliasp(arg1))
exception(NOT_STREAM, ind, arg1, th);
if (aliasp(arg1))
arg1 = GET_CAR(arg1);
c = fgetc(GET_PORT(arg1));
if (c == EOF)
res = unify(arg2, makeconst("end_of_file"), th);
else
res = unify(arg2, makeint(c), th);
if (res == YES)
return (prove_all(rest, sp[th], th));
else
return (NO);
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_put_char(int arglist, int rest, int th)
{
int n, ind, arg1, arg2;
n = length(arglist);
ind = makeind("put_char", n, th);
if (n == 1) {
arg1 = output_stream;
arg2 = car(arglist);
goto put;
} else if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
put:
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (wide_variable_p(arg2))
exception(INSTANTATION_ERR, ind, arg2, th);
if (!wide_variable_p(arg1) && !characterp(arg2))
exception(NOT_CHAR, ind, arg2, th);
if (!streamp(arg1) && !aliasp(arg1))
exception(NOT_STREAM, ind, arg1, th);
fprintf(GET_PORT(arg1), "%s", GET_NAME(arg2));
return (prove_all(rest, sp[th], th));
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_put_code(int arglist, int rest, int th)
{
int n, ind, arg1, arg2;
n = length(arglist);
ind = makeind("put_code", n, th);
if (n == 1) {
arg1 = output_stream;
arg2 = car(arglist);
goto put;
} else if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
put:
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (wide_variable_p(arg2))
exception(INSTANTATION_ERR, ind, arg2, th);
if (!wide_variable_p(arg1) && !integerp(arg2))
exception(NOT_INT, ind, arg2, th);
if (!streamp(arg1) && !aliasp(arg1))
exception(NOT_STREAM, ind, arg1, th);
fprintf(GET_PORT(arg1), "%d", GET_INT(arg2));
return (prove_all(rest, sp[th], th));
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_put_byte(int arglist, int rest, int th)
{
int n, ind, arg1, arg2;
n = length(arglist);
ind = makeind("put_byte", n, th);
if (n == 1) {
arg1 = output_stream;
arg2 = car(arglist);
goto put;
} else if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
put:
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (wide_variable_p(arg2))
exception(INSTANTATION_ERR, ind, arg2, th);
if (!wide_variable_p(arg1) && !integerp(arg2))
exception(NOT_INT, ind, arg2, th);
if (!streamp(arg1) && !aliasp(arg1))
exception(NOT_STREAM, ind, arg1, th);
fprintf(GET_PORT(arg1), "%d", GET_INT(arg2));
return (prove_all(rest, sp[th], th));
}
exception(ARITY_ERR, ind, arglist, th);
return (NO);
}
int b_peek_code(int arglist, int rest, int th)
{
int n, ind, arg1, arg2, c, i, res;
char str[10];
n = length(arglist);
ind = makeind("peek_code", n, th);
if (n == 1) {
arg1 = input_stream;
arg2 = car(arglist);
goto peek_code;
} else if (n == 2) {
arg1 = car(arglist);
arg2 = cadr(arglist);
peek_code:
if (wide_variable_p(arg1))
exception(INSTANTATION_ERR, ind, arg1, th);
if (!wide_variable_p(arg2) && !integerp(arg2))
exception(NOT_INT, ind, arg2, th);
if (!streamp(arg1) && !aliasp(arg1))
exception(NOT_STREAM, ind, arg1, th);
if (aliasp(arg1))
arg1 = GET_CAR(arg1);
c = getc(GET_PORT(arg1));
ungetc(c, GET_PORT(arg1));
if (isUni2(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
ungetc(str[1], GET_PORT(arg1));
str[2] = NUL;
i = utf8_to_ucs4(str);
} else if (isUni3(c)) {
str[0] = c;
str[1] = getc(GET_PORT(arg1));
ungetc(str[1], GET_PORT(arg1));
str[2] = getc(GET_PORT(arg1));
ungetc(str[2], GET_PORT(arg1));