CLDS_ST_HASH_SET_INSERT_RESULT clds_st_hash_set_insert()

in src/clds_st_hash_set.c [122:163]

• 31 lines of code
• 4 McCabe index (conditional complexity)

CLDS_ST_HASH_SET_INSERT_RESULT clds_st_hash_set_insert(CLDS_ST_HASH_SET_HANDLE clds_st_hash_set, void* key)
{
    CLDS_ST_HASH_SET_INSERT_RESULT result;

    if (
        /* Codes_SRS_CLDS_ST_HASH_SET_01_010: [ If clds_st_hash_set is NULL, clds_st_hash_set_insert shall fail and return CLDS_HASH_TABLE_INSERT_ERROR. ]*/
        (clds_st_hash_set == NULL) ||
        /* Codes_SRS_CLDS_ST_HASH_SET_01_011: [ If key is NULL, clds_st_hash_set_insert shall fail and return CLDS_HASH_TABLE_INSERT_ERROR. ]*/
        (key == NULL)
        )
    {
        LogError("Invalid arguments: CLDS_ST_HASH_SET_HANDLE clds_st_hash_set=%p, void* key=%p", clds_st_hash_set, key);
        result = CLDS_ST_HASH_SET_INSERT_ERROR;
    }
    else
    {
        /* Codes_SRS_CLDS_ST_HASH_SET_01_012: [ clds_st_hash_set_insert shall hash the key by calling the compute_hash function passed to clds_st_hash_set_create. ]*/
        uint64_t hash = clds_st_hash_set->compute_hash_func(key);
            
        // find the bucket
        uint64_t bucket_index = hash % clds_st_hash_set->bucket_count;

        HASH_TABLE_ITEM* hash_table_item = malloc(sizeof(HASH_TABLE_ITEM));
        if (hash_table_item == NULL)
        {
            LogError("Error allocating memory for hash set item");
            result = CLDS_ST_HASH_SET_INSERT_ERROR;
        }
        else
        {
            /* Codes_SRS_CLDS_ST_HASH_SET_01_008: [ clds_st_hash_set_insert shall insert a key in the hash set. ]*/
            hash_table_item->key = key;
            hash_table_item->next = clds_st_hash_set->hash_set[bucket_index];
            clds_st_hash_set->hash_set[bucket_index] = hash_table_item;

            /* Codes_SRS_CLDS_ST_HASH_SET_01_009: [ On success clds_st_hash_set_insert shall return CLDS_HASH_TABLE_INSERT_OK. ]*/
            result = CLDS_ST_HASH_SET_INSERT_OK;
        }
    }

    return result;
}