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array: Add gdk_array_steal()

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Like gdk_array_clear() but returns the previous contents.
This commit is contained in:
Benjamin Otte 2023-09-14 18:28:25 +02:00
parent 24048dce43
commit f2a71898b1
1 changed files with 44 additions and 12 deletions
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56
gdk/gdkarrayimpl.c
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@ -82,6 +82,18 @@ gdk_array(init) (GdkArray *self)
#endif
}
G_GNUC_UNUSED static inline gsize
gdk_array(get_capacity) (const GdkArray *self)
{
return self->end_allocation - self->start;
}
G_GNUC_UNUSED static inline gsize
gdk_array(get_size) (const GdkArray *self)
{
return self->end - self->start;
}
static inline void
gdk_array(free_elements) (_T_ *start,
_T_ *end)
@ -110,6 +122,38 @@ gdk_array(clear) (GdkArray *self)
gdk_array(init) (self);
}
/*
* gdk_array_steal:
* @self: the array
*
* Steals all data in the array and clears the array.
*
* If you need to know the size of the data, you should query it
* beforehand.
*
* Returns: The array's data
**/
G_GNUC_UNUSED static inline _T_ *
gdk_array(steal) (GdkArray *self)
{
_T_ *result;
#ifdef GDK_ARRAY_PREALLOC
if (self->start == self->preallocated)
{
gsize size = GDK_ARRAY_REAL_SIZE (gdk_array(get_size) (self));
result = g_new (_T_, size);
memcpy (result, self->preallocated, sizeof (_T_) * size);
}
else
#endif
result = self->start;
gdk_array(init) (self);
return result;
}
G_GNUC_UNUSED static inline _T_ *
gdk_array(get_data) (const GdkArray *self)
{
@ -123,18 +167,6 @@ gdk_array(index) (const GdkArray *self,
return self->start + pos;
}
G_GNUC_UNUSED static inline gsize
gdk_array(get_capacity) (const GdkArray *self)
{
return self->end_allocation - self->start;
}
G_GNUC_UNUSED static inline gsize
gdk_array(get_size) (const GdkArray *self)
{
return self->end - self->start;
}
G_GNUC_UNUSED static inline gboolean
gdk_array(is_empty) (const GdkArray *self)
{