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author | Anders Svensson <[email protected]> | 2011-10-14 19:40:29 +0200 |
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committer | Anders Svensson <[email protected]> | 2011-10-17 12:30:58 +0200 |
commit | 14bf1dc855bbd973bb15578f418e37ab2d4f17fe (patch) | |
tree | ed67388edcead44b9867eb034c84b4394d0cf117 /lib/diameter/src/app/diameter_dict.erl | |
parent | f4c38ecd803451280d0021bcfa7f2ad25b96cbcd (diff) | |
download | otp-14bf1dc855bbd973bb15578f418e37ab2d4f17fe.tar.gz otp-14bf1dc855bbd973bb15578f418e37ab2d4f17fe.tar.bz2 otp-14bf1dc855bbd973bb15578f418e37ab2d4f17fe.zip |
One makefile for src build instead of recursion
Simpler, no duplication of similar makefiles and makes for
better dependencies. (Aka, recursive make considered harmful.)
Diffstat (limited to 'lib/diameter/src/app/diameter_dict.erl')
-rw-r--r-- | lib/diameter/src/app/diameter_dict.erl | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/lib/diameter/src/app/diameter_dict.erl b/lib/diameter/src/app/diameter_dict.erl deleted file mode 100644 index 3b9ba00a3f..0000000000 --- a/lib/diameter/src/app/diameter_dict.erl +++ /dev/null @@ -1,153 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2010-2011. 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% -%% - -%% -%% This module provide OTP's dict interface built on top of ets. -%% -%% Note that while the interface is the same as dict the semantics -%% aren't quite. A Dict here is just a table identifier (although -%% this fact can't be used if you want dict/ets-based implementations -%% to be interchangeable) so changes made to the Dict modify the -%% underlying table. For merge/3, the first argument table is modified. -%% -%% The underlying ets table implementing a dict is deleted when the -%% process from which new() was invoked exits and the dict is only -%% writable from this process. -%% -%% The reason for this is to be able to swap dict/ets-based -%% implementations: the former is easier to debug, the latter is -%% faster for larger tables. It's also just a nice interface even -%% when there's no need for swapability. -%% - --module(diameter_dict). - --export([append/3, - append_list/3, - erase/2, - fetch/2, - fetch_keys/1, - filter/2, - find/2, - fold/3, - from_list/1, - is_key/2, - map/2, - merge/3, - new/0, - store/3, - to_list/1, - update/3, - update/4, - update_counter/3]). - -%%% ---------------------------------------------------------- -%%% EXPORTED INTERNAL FUNCTIONS -%%% ---------------------------------------------------------- - -append(Key, Value, Dict) -> - append_list(Key, [Value], Dict). - -append_list(Key, ValueList, Dict) - when is_list(ValueList) -> - update(Key, fun(V) -> V ++ ValueList end, ValueList, Dict). - -erase(Key, Dict) -> - ets:delete(Dict, Key), - Dict. - -fetch(Key, Dict) -> - {ok, V} = find(Key, Dict), - V. - -fetch_keys(Dict) -> - ets:foldl(fun({K,_}, Acc) -> [K | Acc] end, [], Dict). - -filter(Pred, Dict) -> - lists:foreach(fun({K,V}) -> filter(Pred(K,V), K, Dict) end, to_list(Dict)), - Dict. - -find(Key, Dict) -> - case ets:lookup(Dict, Key) of - [{Key, V}] -> - {ok, V}; - [] -> - error - end. - -fold(Fun, Acc0, Dict) -> - ets:foldl(fun({K,V}, Acc) -> Fun(K, V, Acc) end, Acc0, Dict). - -from_list(List) -> - lists:foldl(fun store/2, new(), List). - -is_key(Key, Dict) -> - ets:member(Dict, Key). - -map(Fun, Dict) -> - lists:foreach(fun({K,V}) -> store(K, Fun(K,V), Dict) end, to_list(Dict)), - Dict. - -merge(Fun, Dict1, Dict2) -> - fold(fun(K2,V2,_) -> - update(K2, fun(V1) -> Fun(K2, V1, V2) end, V2, Dict1) - end, - Dict1, - Dict2). - -new() -> - ets:new(?MODULE, [set]). - -store(Key, Value, Dict) -> - store({Key, Value}, Dict). - -to_list(Dict) -> - ets:tab2list(Dict). - -update(Key, Fun, Dict) -> - store(Key, Fun(fetch(Key, Dict)), Dict). - -update(Key, Fun, Initial, Dict) -> - store(Key, map(Key, Fun, Dict, Initial), Dict). - -update_counter(Key, Increment, Dict) - when is_integer(Increment) -> - update(Key, fun(V) -> V + Increment end, Increment, Dict). - -%%% --------------------------------------------------------- -%%% INTERNAL FUNCTIONS -%%% --------------------------------------------------------- - -store({_,_} = T, Dict) -> - ets:insert(Dict, T), - Dict. - -filter(true, _, _) -> - ok; -filter(false, K, Dict) -> - erase(K, Dict). - -map(Key, Fun, Dict, Error) -> - case find(Key, Dict) of - {ok, V} -> - Fun(V); - error -> - Error - end. - |