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