diff options
-rw-r--r-- | include/parserutils/utils/vector.h | 2 | ||||
-rw-r--r-- | src/utils/vector.c | 20 |
2 files changed, 22 insertions, 0 deletions
diff --git a/include/parserutils/utils/vector.h b/include/parserutils/utils/vector.h index 10e8356..6bfd0fe 100644 --- a/include/parserutils/utils/vector.h +++ b/include/parserutils/utils/vector.h @@ -27,6 +27,8 @@ parserutils_error parserutils_vector_remove_last(parserutils_vector *vector); const void *parserutils_vector_iterate(const parserutils_vector *vector, int32_t *ctx); +const void *parserutils_vector_peek(const parserutils_vector *vector, + int32_t ctx); #endif diff --git a/src/utils/vector.c b/src/utils/vector.c index a289b61..1ffa8a3 100644 --- a/src/utils/vector.c +++ b/src/utils/vector.c @@ -179,6 +179,26 @@ const void *parserutils_vector_iterate(const parserutils_vector *vector, return item; } +/** + * Peek at an item in a vector + * + * \param vector The vector to iterate over + * \param ctx Integer for the iterator to use as context. + * \return Pointer to item, or NULL if no more + */ +const void *parserutils_vector_peek(const parserutils_vector *vector, + int32_t ctx) +{ + if (vector == NULL || vector->current_item < 0) + return NULL; + + if (ctx > vector->current_item) + return NULL; + + return (uint8_t *) vector->items + (ctx * vector->item_size); +} + + #ifndef NDEBUG #include <stdio.h> |