return _ao_scheme_bool_true;
}
-ao_poly
-ao_scheme_arg(struct ao_scheme_cons *cons, int argc)
+static ao_poly
+ao_scheme_opt_arg(struct ao_scheme_cons *cons, int argc, ao_poly def)
{
- if (!cons)
- return AO_SCHEME_NIL;
- while (argc--) {
+ for (;;) {
if (!cons)
- return AO_SCHEME_NIL;
+ return def;
+ if (argc == 0)
+ return cons->car;
cons = ao_scheme_cons_cdr(cons);
+ argc--;
}
- return cons->car;
+}
+
+ao_poly
+ao_scheme_arg(struct ao_scheme_cons *cons, int argc)
+{
+ return ao_scheme_opt_arg(cons, argc, AO_SCHEME_NIL);
}
ao_poly
return i;
}
+static int32_t
+ao_scheme_opt_arg_int(ao_poly name, struct ao_scheme_cons *cons, int argc, int def)
+{
+ ao_poly p = ao_scheme_opt_arg(cons, argc, ao_scheme_int_poly(def));
+ bool fail = false;
+ int32_t i = ao_scheme_poly_integer(p, &fail);
+
+ if (fail)
+ (void) ao_scheme_error(AO_SCHEME_INVALID, "%v: arg %d invalid type %v", name, argc, p);
+ return i;
+}
+
ao_poly
ao_scheme_do_car(struct ao_scheme_cons *cons)
{
return ao_scheme_cons_poly(new);
}
+ao_poly
+ao_scheme_do_list_tail(struct ao_scheme_cons *cons)
+{
+ ao_poly list;
+ int32_t v;
+
+ if (!ao_scheme_check_argc(_ao_scheme_atom_list2dtail, cons, 2, 2))
+ return AO_SCHEME_NIL;
+ if (!ao_scheme_check_argt(_ao_scheme_atom_list2dtail, cons, 0, AO_SCHEME_CONS, 1))
+ return AO_SCHEME_NIL;
+ list = ao_scheme_arg(cons, 0);
+ v = ao_scheme_arg_int(_ao_scheme_atom_list2dtail, cons, 1);
+ if (ao_scheme_exception)
+ return AO_SCHEME_NIL;
+ while (v > 0) {
+ if (!list)
+ return ao_scheme_error(AO_SCHEME_INVALID, "%v: ran off end", _ao_scheme_atom_list2dtail);
+ if (!ao_scheme_is_cons(list))
+ return ao_scheme_error(AO_SCHEME_INVALID, "%v: invalid list", _ao_scheme_atom_list2dtail);
+ list = ao_scheme_poly_cons(list)->cdr;
+ v--;
+ }
+ return list;
+}
+
ao_poly
ao_scheme_do_quote(struct ao_scheme_cons *cons)
{
if (cons == orig_cons) {
ret = car;
- ao_scheme_cons_stash(0, cons);
+ ao_scheme_cons_stash(cons);
if (cons->cdr == AO_SCHEME_NIL) {
switch (op) {
case builtin_minus:
break;
}
}
- cons = ao_scheme_cons_fetch(0);
+ cons = ao_scheme_cons_fetch();
} else if (ao_scheme_integer_typep(rt) && ao_scheme_integer_typep(ct)) {
int32_t r = ao_scheme_poly_integer(ret, NULL);
int32_t c = ao_scheme_poly_integer(car, NULL);
case builtin_quotient:
if (c == 0)
return ao_scheme_error(AO_SCHEME_DIVIDE_BY_ZERO, "quotient by zero");
+ r = r / c;
+ break;
+ case builtin_floor_quotient:
+ if (c == 0)
+ return ao_scheme_error(AO_SCHEME_DIVIDE_BY_ZERO, "floor-quotient by zero");
if (r % c != 0 && (c < 0) != (r < 0))
r = r / c - 1;
else
default:
break;
}
- ao_scheme_cons_stash(0, cons);
+ ao_scheme_cons_stash(cons);
ret = ao_scheme_integer_poly(r);
- cons = ao_scheme_cons_fetch(0);
+ cons = ao_scheme_cons_fetch();
#ifdef AO_SCHEME_FEATURE_FLOAT
} else if (ao_scheme_number_typep(rt) && ao_scheme_number_typep(ct)) {
float r, c;
r /= c;
break;
case builtin_quotient:
+ case builtin_floor_quotient:
case builtin_remainder:
case builtin_modulo:
return ao_scheme_error(AO_SCHEME_INVALID, "non-integer value in integer divide");
default:
break;
}
- ao_scheme_cons_stash(0, cons);
+ ao_scheme_cons_stash(cons);
ret = ao_scheme_float_get(r);
- cons = ao_scheme_cons_fetch(0);
+ cons = ao_scheme_cons_fetch();
#endif
}
else if (rt == AO_SCHEME_STRING && ct == AO_SCHEME_STRING && op == builtin_plus) {
- ao_scheme_cons_stash(0, cons);
+ ao_scheme_cons_stash(cons);
ret = ao_scheme_string_poly(ao_scheme_string_cat(ao_scheme_poly_string(ret),
ao_scheme_poly_string(car)));
- cons = ao_scheme_cons_fetch(0);
+ cons = ao_scheme_cons_fetch();
if (!ret)
return ret;
}
return ao_scheme_math(cons, builtin_quotient);
}
+ao_poly
+ao_scheme_do_floor_quotient(struct ao_scheme_cons *cons)
+{
+ return ao_scheme_math(cons, builtin_floor_quotient);
+}
+
ao_poly
ao_scheme_do_modulo(struct ao_scheme_cons *cons)
{
val = ao_scheme_arg_int(_ao_scheme_atom_string2dset21, cons, 2);
if (ao_scheme_exception)
return AO_SCHEME_NIL;
+ if (!val)
+ goto fail;
while (*string && ref) {
++string;
--ref;
}
if (!*string)
- return ao_scheme_error(AO_SCHEME_INVALID, "%v: string %v ref %v invalid",
- _ao_scheme_atom_string2dset21,
- ao_scheme_arg(cons, 0),
- ao_scheme_arg(cons, 1));
+ goto fail;
*string = val;
return ao_scheme_int_poly(*string);
+fail:
+ return ao_scheme_error(AO_SCHEME_INVALID, "%v: %v[%v] = %v invalid",
+ _ao_scheme_atom_string2dset21,
+ ao_scheme_arg(cons, 0),
+ ao_scheme_arg(cons, 1),
+ ao_scheme_arg(cons, 2));
+}
+
+ao_poly
+ao_scheme_do_make_string(struct ao_scheme_cons *cons)
+{
+ int32_t len;
+ char fill;
+
+ if (!ao_scheme_check_argc(_ao_scheme_atom_make2dstring, cons, 1, 2))
+ return AO_SCHEME_NIL;
+ len = ao_scheme_arg_int(_ao_scheme_atom_make2dstring, cons, 0);
+ if (ao_scheme_exception)
+ return AO_SCHEME_NIL;
+ fill = ao_scheme_opt_arg_int(_ao_scheme_atom_make2dstring, cons, 1, ' ');
+ if (ao_scheme_exception)
+ return AO_SCHEME_NIL;
+ return ao_scheme_string_poly(ao_scheme_make_string(len, fill));
}
ao_poly
{
int32_t k;
- if (!ao_scheme_check_argc(_ao_scheme_atom_make2dvector, cons, 2, 2))
+ if (!ao_scheme_check_argc(_ao_scheme_atom_make2dvector, cons, 1, 2))
return AO_SCHEME_NIL;
k = ao_scheme_arg_int(_ao_scheme_atom_make2dvector, cons, 0);
if (ao_scheme_exception)
return AO_SCHEME_NIL;
- return ao_scheme_vector_poly(ao_scheme_vector_alloc(k, ao_scheme_arg(cons, 1)));
+ return ao_scheme_vector_poly(ao_scheme_vector_alloc(k, ao_scheme_opt_arg(cons, 1, _ao_scheme_bool_false)));
}
ao_poly
ao_poly
ao_scheme_do_vector_to_list(struct ao_scheme_cons *cons)
{
- if (!ao_scheme_check_argc(_ao_scheme_atom_vector2d3elist, cons, 1, 1))
+ int start, end;
+
+ if (!ao_scheme_check_argc(_ao_scheme_atom_vector2d3elist, cons, 1, 3))
return AO_SCHEME_NIL;
if (!ao_scheme_check_argt(_ao_scheme_atom_vector2d3elist, cons, 0, AO_SCHEME_VECTOR, 0))
return AO_SCHEME_NIL;
- return ao_scheme_cons_poly(ao_scheme_vector_to_list(ao_scheme_poly_vector(ao_scheme_arg(cons, 0))));
+ start = ao_scheme_opt_arg_int(_ao_scheme_atom_vector2d3elist, cons, 1, ao_scheme_int_poly(0));
+ if (ao_scheme_exception)
+ return AO_SCHEME_NIL;
+ end = ao_scheme_opt_arg_int(_ao_scheme_atom_vector2d3elist, cons, 2, ao_scheme_int_poly(-1));
+ if (ao_scheme_exception)
+ return AO_SCHEME_NIL;
+ return ao_scheme_cons_poly(ao_scheme_vector_to_list(ao_scheme_poly_vector(ao_scheme_arg(cons, 0)),
+ start,
+ end));
}
ao_poly
projects / fw / altos / blobdiff