diff options
author | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-01-04 07:49:00 +0000 |
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committer | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-01-04 07:49:00 +0000 |
commit | 87e628d66b7bf98f276dbd38b810f0197f821081 (patch) | |
tree | d1afccc0c05406018af35ef0b110b84e2b7ac47c /hash.c | |
parent | 784df9e6fd41a73cbdfc22222c5917991aa0825e (diff) |
skip to calculate hash value on empty Hash ar_table lookup.
* hash.c (ar_lookup): don't calculate hash_value if ar_table is empty.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66702 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'hash.c')
-rw-r--r-- | hash.c | 21 |
1 files changed, 13 insertions, 8 deletions
@@ -928,18 +928,23 @@ ar_insert(VALUE hash, st_data_t key, st_data_t value) static int ar_lookup(VALUE hash, st_data_t key, st_data_t *value) { - st_hash_t hash_value = do_hash(key); - unsigned bin = find_entry(hash, hash_value, key); - - if (bin == RHASH_AR_TABLE_MAX_BOUND) { + if (RHASH_AR_TABLE_SIZE(hash) == 0) { return 0; } else { - HASH_ASSERT(bin < RHASH_AR_TABLE_MAX_BOUND); - if (value != NULL) { - *value = RHASH_AR_TABLE_REF(hash, bin)->record; + st_hash_t hash_value = do_hash(key); + unsigned bin = find_entry(hash, hash_value, key); + + if (bin == RHASH_AR_TABLE_MAX_BOUND) { + return 0; + } + else { + HASH_ASSERT(bin < RHASH_AR_TABLE_MAX_BOUND); + if (value != NULL) { + *value = RHASH_AR_TABLE_REF(hash, bin)->record; + } + return 1; } - return 1; } } |