diff options
Diffstat (limited to 'core')
| -rw-r--r-- | core/runtime/dynamic_map_internal.odin | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/core/runtime/dynamic_map_internal.odin b/core/runtime/dynamic_map_internal.odin index 465c5bfb7..6f6a17f11 100644 --- a/core/runtime/dynamic_map_internal.odin +++ b/core/runtime/dynamic_map_internal.odin @@ -692,7 +692,30 @@ map_lookup_dynamic :: proc "contextless" (m: Raw_Map, #no_alias info: ^Map_Info, d += 1 } } - +@(optimization_mode="speed") +map_exists_dynamic :: proc "contextless" (m: Raw_Map, #no_alias info: ^Map_Info, k: uintptr) -> (ok: bool) { + if map_len(m) == 0 { + return false + } + h := info.key_hasher(rawptr(k), 0) + p := map_desired_position(m, h) + d := uintptr(0) + c := (uintptr(1) << map_log2_cap(m)) - 1 + ks, _, hs, _, _ := map_kvh_data_dynamic(m, info) + info_ks := &info.ks + for { + element_hash := hs[p] + if map_hash_is_empty(element_hash) { + return false + } else if d > map_probe_distance(m, element_hash, p) { + return false + } else if element_hash == h && info.key_equal(rawptr(k), rawptr(map_cell_index_dynamic(ks, info_ks, p))) { + return true + } + p = (p + 1) & c + d += 1 + } +} |