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| author | Sverker Eriksson <[email protected]> | 2015-01-21 18:22:58 +0100 |
|---|---|---|
| committer | Björn-Egil Dahlberg <[email protected]> | 2015-03-12 18:56:41 +0100 |
| commit | a7a0bb29fd162cdfc6cdf6eb18cb5e2cf22a430e (patch) | |
| tree | 34d3c6aa8c0de8e676ef25265e0e8f6e8516ed31 /erts/emulator | |
| parent | b0b6eff0bebd25ba371a027b824426b87bd2a1d6 (diff) | |
| download | otp-a7a0bb29fd162cdfc6cdf6eb18cb5e2cf22a430e.tar.gz otp-a7a0bb29fd162cdfc6cdf6eb18cb5e2cf22a430e.tar.bz2 otp-a7a0bb29fd162cdfc6cdf6eb18cb5e2cf22a430e.zip | |
erts: Add hashmap:find/2
Diffstat (limited to 'erts/emulator')
| -rw-r--r-- | erts/emulator/beam/bif.tab | 1 | ||||
| -rw-r--r-- | erts/emulator/beam/erl_hashmap.c | 22 |
2 files changed, 23 insertions, 0 deletions
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab index 6408883e96..c0fb1f8827 100644 --- a/erts/emulator/beam/bif.tab +++ b/erts/emulator/beam/bif.tab @@ -617,6 +617,7 @@ bif erlang:get_keys/0 # Hash Array Mappped Trie bif hashmap:put/3 bif hashmap:get/2 +bif hashmap:find/2 bif hashmap:remove/2 bif hashmap:info/1 bif hashmap:to_list/1 diff --git a/erts/emulator/beam/erl_hashmap.c b/erts/emulator/beam/erl_hashmap.c index 8e651dd776..a5d6daadd7 100644 --- a/erts/emulator/beam/erl_hashmap.c +++ b/erts/emulator/beam/erl_hashmap.c @@ -133,6 +133,28 @@ BIF_RETTYPE hashmap_get_2(BIF_ALIST_2) { BIF_ERROR(BIF_P, BADARG); } +/* hashmap:find/2 */ + +BIF_RETTYPE hashmap_find_2(BIF_ALIST_2) { + if (is_hashmap(BIF_ARG_2)) { + Eterm *hp, res; + const Eterm *value; + Uint32 hx = make_hash2(BIF_ARG_1); + + if ((value = hashmap_get(hx, BIF_ARG_1, BIF_ARG_2)) != NULL) { + hp = HAlloc(BIF_P, 3); + res = make_tuple(hp); + *hp++ = make_arityval(2); + *hp++ = am_ok; + *hp++ = *value; + BIF_RET(res); + } + BIF_RET(am_error); + } + BIF_ERROR(BIF_P, BADARG); +} + + /* hashmap:remove/2 */ BIF_RETTYPE hashmap_remove_2(BIF_ALIST_2) { |