42 lines
1.3 KiB
Erlang
42 lines
1.3 KiB
Erlang
%%--------------------------------------------------------------------
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%% Copyright (c) 2022 EMQ Technologies Co., Ltd. All Rights Reserved.
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%%
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%% Licensed under the Apache License, Version 2.0 (the "License");
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%% you may not use this file except in compliance with the License.
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%% You may obtain a copy of the License at
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%%
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%% http://www.apache.org/licenses/LICENSE-2.0
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%%
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%% Unless required by applicable law or agreed to in writing, software
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%% distributed under the License is distributed on an "AS IS" BASIS,
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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%% See the License for the specific language governing permissions and
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%% limitations under the License.
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%%--------------------------------------------------------------------
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%% Note: this module CAN'T be hot-patched to avoid invalidating the
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%% closures, so it must not be changed.
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-module(emqx_secret).
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%% API:
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-export([wrap/1, unwrap/1]).
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%%================================================================================
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%% API funcions
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%%================================================================================
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wrap(undefined) ->
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undefined;
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wrap(Func) when is_function(Func) ->
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Func;
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wrap(Term) ->
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fun() ->
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Term
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end.
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unwrap(Term) when is_function(Term, 0) ->
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%% Handle potentially nested funs
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unwrap(Term());
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unwrap(Term) ->
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Term.
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