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dynarray: Implement begin/end functions in the spirit of C++

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This commit is contained in:
Florian Weimer
2017-06-13 17:03:56 +02:00
parent a65ea28d18
commit f8bf87face
4 changed files with 63 additions and 0 deletions
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22
malloc/dynarray-skeleton.c
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@ -65,6 +65,8 @@
bool DYNARRAY_PREFIX##has_failed (const struct DYNARRAY_STRUCT *);
void DYNARRAY_PREFIX##mark_failed (struct DYNARRAY_STRUCT *);
size_t DYNARRAY_PREFIX##size (const struct DYNARRAY_STRUCT *);
DYNARRAY_ELEMENT *DYNARRAY_PREFIX##begin (const struct DYNARRAY_STRUCT *);
DYNARRAY_ELEMENT *DYNARRAY_PREFIX##end (const struct DYNARRAY_STRUCT *);
DYNARRAY_ELEMENT *DYNARRAY_PREFIX##at (struct DYNARRAY_STRUCT *, size_t);
void DYNARRAY_PREFIX##add (struct DYNARRAY_STRUCT *, DYNARRAY_ELEMENT);
DYNARRAY_ELEMENT *DYNARRAY_PREFIX##emplace (struct DYNARRAY_STRUCT *);
@ -248,6 +250,26 @@ DYNARRAY_NAME (at) (struct DYNARRAY_STRUCT *list, size_t index)
return list->dynarray_header.array + index;
}
/* Return a pointer to the first array element, if any. For a
zero-length array, the pointer can be NULL even though the dynamic
array has not entered the failure state. */
__attribute__ ((nonnull (1)))
static inline DYNARRAY_ELEMENT *
DYNARRAY_NAME (begin) (struct DYNARRAY_STRUCT *list)
{
return list->dynarray_header.array;
}
/* Return a pointer one element past the last array element. For a
zero-length array, the pointer can be NULL even though the dynamic
array has not entered the failure state. */
__attribute__ ((nonnull (1)))
static inline DYNARRAY_ELEMENT *
DYNARRAY_NAME (end) (struct DYNARRAY_STRUCT *list)
{
return list->dynarray_header.array + list->dynarray_header.used;
}
/* Internal function. Slow path for the add function below. */
static void
DYNARRAY_NAME (add__) (struct DYNARRAY_STRUCT *list, DYNARRAY_ELEMENT item)