int
strm_nil_p(strm_value v)
{
if (strm_value_tag(v) != STRM_TAG_PTR)
return FALSE;
return strm_value_val(v) == 0;
}
int
strm_value_eq(strm_value a, strm_value b)
{
if (a == b) return TRUE;
if (strm_value_tag(a) != strm_value_tag(b)) goto typediff;
switch (strm_value_tag(a)) {
case STRM_TAG_STRUCT:
return strm_ary_eq(a, b);
case STRM_TAG_STRING_O:
case STRM_TAG_STRING_F:
return strm_str_eq(a, b);
case STRM_TAG_CFUNC:
return (strm_cfunc)(intptr_t)strm_value_val(a) == (strm_cfunc)(intptr_t)strm_value_val(b);
case STRM_TAG_PTR:
return strm_value_vptr(a) == strm_value_vptr(b);
typediff:
default:
if (strm_number_p(a) && strm_number_p(b)) {
return strm_value_flt(a) == strm_value_flt(b);
}
return FALSE;
}
}
int
strm_value_bool(strm_value v)
{
uint64_t i = strm_value_val(v);
if (i == 0) {
switch (strm_value_tag(v)) {
case STRM_TAG_BOOL: /* false */
case STRM_TAG_PTR: /* nil */
break;
default:
assert(strm_value_tag(v) == STRM_TAG_BOOL);
break;
}
return FALSE;
}
else {
return TRUE;
}
}
strm_string
strm_to_str(strm_value v)
{
char buf[32];
int n;
strm_state* ns = strm_value_ns(v);
if (ns) {
strm_value m;
n = strm_var_get(ns, strm_str_intern_lit("string"), &m);
if (n == STRM_OK) {
n = strm_funcall(NULL, m, 1, &v, &m);
if (n == STRM_OK && strm_string_p(m)) return m;
}
}
switch (strm_value_tag(v)) {
case STRM_TAG_INT:
n = sprintf(buf, "%d", strm_to_int(v));
return strm_str_new(buf, n);
case STRM_TAG_BOOL:
n = sprintf(buf, strm_to_int(v) ? "true" : "false");
return strm_str_new(buf, n);
case STRM_TAG_CFUNC:
n = sprintf(buf, "<cfunc:%p>", (void*)strm_value_cfunc(v));
return strm_str_new(buf, n);
case STRM_TAG_STRING_I:
case STRM_TAG_STRING_6:
case STRM_TAG_STRING_O:
case STRM_TAG_STRING_F:
return strm_value_str(v);
case STRM_TAG_ARRAY:
case STRM_TAG_STRUCT:
return strm_inspect(v);
case STRM_TAG_PTR:
if (strm_value_val(v) == 0)
return strm_str_lit("nil");
else {
void *p = strm_ptr(v);
switch (strm_ptr_type(p)) {
case STRM_PTR_STREAM:
n = sprintf(buf, "<stream:%p>", p);
break;
case STRM_PTR_IO: {
strm_io io = (strm_io)p;
char *mode;
switch (io->mode & 3) {
case STRM_IO_READ:
mode = "r"; break;
case STRM_IO_WRITE:
mode = "w"; break;
case STRM_IO_READ|STRM_IO_WRITE:
mode = "rw"; break;
default:
mode = "?"; break;
}
n = sprintf(buf, "<io: fd=%d mode=%s>", io->fd, mode);
break;
}
case STRM_PTR_LAMBDA:
n = sprintf(buf, "<lambda:%p>", p);
break;
case STRM_PTR_AUX:
n = sprintf(buf, "<obj:%p>", p);
break;
}
return strm_str_new(buf, n);
}
default:
if (strm_flt_p(v)) {
n = sprintf(buf, "%.14g", strm_to_flt(v));
return strm_str_new(buf, n);
}
n = sprintf(buf, "<%p>", strm_value_vptr(v));
return strm_str_new(buf, n);
}
/* not reached */
return strm_str_null;
}
strm_cfunc
strm_value_cfunc(strm_value v)
{
assert(strm_value_tag(v) == STRM_TAG_CFUNC);
return (strm_cfunc)(intptr_t)strm_value_val(v);
}
strm_string
strm_to_str(strm_value v)
{
char buf[32];
int n;
switch (strm_value_tag(v)) {
case STRM_TAG_INT:
n = sprintf(buf, "%d", strm_to_int(v));
return strm_str_new(buf, n);
case STRM_TAG_BOOL:
n = sprintf(buf, strm_to_int(v) ? "true" : "false");
return strm_str_new(buf, n);
case STRM_TAG_CFUNC:
n = sprintf(buf, "<cfunc:%p>", (void*)strm_value_cfunc(v));
return strm_str_new(buf, n);
case STRM_TAG_STRING_I:
case STRM_TAG_STRING_6:
case STRM_TAG_STRING_O:
case STRM_TAG_STRING_F:
return strm_value_str(v);
case STRM_TAG_ARRAY:
case STRM_TAG_STRUCT:
return strm_inspect(v);
case STRM_TAG_PTR:
if (strm_value_val(v) == 0)
return strm_str_new("nil", 3);
else {
void *p = strm_ptr(v);
switch (strm_ptr_type(p)) {
case STRM_PTR_TASK:
n = sprintf(buf, "<task:%p>", p);
break;
case STRM_PTR_IO: {
strm_io io = (strm_io)p;
char *mode;
switch (io->mode & 3) {
case STRM_IO_READ:
mode = "r"; break;
case STRM_IO_WRITE:
mode = "w"; break;
case STRM_IO_READ|STRM_IO_WRITE:
mode = "rw"; break;
}
n = sprintf(buf, "<io: fd=%d mode=%s>", io->fd, mode);
break;
}
case STRM_PTR_LAMBDA:
n = sprintf(buf, "<lambda:%p>", p);
break;
case STRM_PTR_MISC:
n = sprintf(buf, "<obj:%p>", p);
break;
}
return strm_str_new(buf, n);
break;
}
default:
if (strm_flt_p(v)) {
n = sprintf(buf, "%g", strm_to_flt(v));
return strm_str_new(buf, n);
}
n = sprintf(buf, "<%p>", strm_value_vptr(v));
return strm_str_new(buf, n);
}
/* not reached */
return strm_str_null;
}
struct strm_array*
strm_ary_struct(strm_value v)
{
return (struct strm_array*)strm_value_val(v);
}