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Backport from xs.

This commit is contained in:
default 2024-04-22 07:31:50 +02:00
parent 9cfce7a4bd
commit cf1c2b1ed8
2 changed files with 43 additions and 3 deletions
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44
xs.h
View File

@ -94,6 +94,7 @@ xs_list *xs_list_append_m(xs_list *list, const char *mem, int dsz);
xs_list *_xs_list_append(xs_list *list, const xs_val *vals[]);
#define xs_list_append(list, ...) _xs_list_append(list, (const xs_val *[]){ __VA_ARGS__, NULL })
int xs_list_iter(xs_list **list, xs_val **value);
int xs_list_next(const xs_list *list, xs_val **value, int *ctxt);
int xs_list_len(const xs_list *list);
xs_val *xs_list_get(const xs_list *list, int num);
xs_list *xs_list_del(xs_list *list, int num);
@ -752,6 +753,42 @@ int xs_list_iter(xs_list **list, xs_val **value)
}
int xs_list_next(const xs_list *list, xs_val **value, int *ctxt)
/* iterates a list, with context */
{
if (xs_type(list) != XSTYPE_LIST)
return 0;
int goon = 1;
char *p = (char *)list;
/* skip the start of the list */
if (*ctxt == 0)
*ctxt = 1 + _XS_TYPE_SIZE;
p += *ctxt;
/* an element? */
if (xs_type(p) == XSTYPE_LITEM) {
p++;
*value = p;
p += xs_size(*value);
}
else {
/* end of list */
goon = 0;
}
/* update the context */
*ctxt = p - list;
return goon;
}
int xs_list_len(const xs_list *list)
/* returns the number of elements in the list */
{
@ -1199,8 +1236,11 @@ double xs_number_get(const xs_number *v)
{
double f = 0.0;
if (v != NULL && v[0] == XSTYPE_NUMBER)
if (xs_type(v) == XSTYPE_NUMBER)
f = atof(&v[1]);
else
if (xs_type(v) == XSTYPE_STRING)
f = atof(v);
return f;
}
@ -1211,7 +1251,7 @@ const char *xs_number_str(const xs_number *v)
{
const char *p = NULL;
if (v != NULL && v[0] == XSTYPE_NUMBER)
if (xs_type(v) == XSTYPE_NUMBER)
p = &v[1];
return p;

2
xs_version.h
View File

@ -1 +1 @@
/* f712d1336ef427c3b56305364b2687578537543f 2024-04-14T19:11:53+02:00 */
/* 0206a65508e86f66b6aa329418ddc8f6f8c1ecb2 2024-04-22T07:31:05+02:00 */