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Diffstat (limited to 'lib/asn1/src/asn1ct_table.erl')
-rw-r--r-- | lib/asn1/src/asn1ct_table.erl | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/lib/asn1/src/asn1ct_table.erl b/lib/asn1/src/asn1ct_table.erl new file mode 100644 index 0000000000..a5eb6d0413 --- /dev/null +++ b/lib/asn1/src/asn1ct_table.erl @@ -0,0 +1,76 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2012. All Rights Reserved. +%% +%% The contents of this file are subject to the Erlang Public License, +%% Version 1.1, (the "License"); you may not use this file except in +%% compliance with the License. You should have received a copy of the +%% Erlang Public License along with this software. If not, it can be +%% retrieved online at http://www.erlang.org/. +%% +%% Software distributed under the License is distributed on an "AS IS" +%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +%% the License for the specific language governing rights and limitations +%% under the License. +%% +%% %CopyrightEnd% +%% +%% +-module(asn1ct_table). + +%% Table abstraction module for ASN.1 compiler + +-export([new/1]). +-export([new/2]). +-export([new_reuse/1]). +-export([new_reuse/2]). +-export([exists/1]). +-export([size/1]). +-export([insert/2]). +-export([lookup/2]). +-export([match/2]). +-export([to_list/1]). +-export([delete/1]). % TODO: Remove (since we run in a separate process) + + +%% Always creates a new table +new(Table) -> new(Table, []). +new(Table, Options) -> + TableId = case get(Table) of + undefined -> + ets:new(Table, Options); + _ -> + delete(Table), + ets:new(Table, Options) + end, + put(Table, TableId). + +%% Only create it if it doesn't exist yet +new_reuse(Table) -> new_reuse(Table, []). +new_reuse(Table, Options) -> + not exists(Table) andalso new(Table, Options). + +exists(Table) -> get(Table) =/= undefined. + +size(Table) -> ets:info(get(Table), size). + +insert(Table, Tuple) -> ets:insert(get(Table), Tuple). + +lookup(Table, Key) -> ets:lookup(get(Table), Key). + +match(Table, MatchSpec) -> ets:match(get(Table), MatchSpec). + +to_list(Table) -> ets:tab2list(get(Table)). + +delete(Tables) when is_list(Tables) -> + [delete(T) || T <- Tables], + true; +delete(Table) when is_atom(Table) -> + case get(Table) of + undefined -> + true; + TableId -> + ets:delete(TableId), + erase(Table) + end. |