%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2010. 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(dict_test_lib).
-export([new/2]).
new(Mod, Eq) ->
fun (enter, {K,V,D}) -> enter(Mod, K, V, D);
(empty, []) -> empty(Mod);
(equal, {D1,D2}) -> Eq(D1, D2);
(from_list, L) -> from_list(Mod, L);
(module, []) -> Mod;
(size, D) -> Mod:size(D);
(to_list, D) -> to_list(Mod, D)
end.
empty(Mod) ->
case erlang:function_exported(Mod, new, 0) of
false -> Mod:empty();
true -> Mod:new()
end.
to_list(Mod, D) ->
Mod:to_list(D).
from_list(Mod, L) ->
case erlang:function_exported(Mod, from_orddict, 1) of
false ->
Mod:from_list(L);
true ->
%% The gb_trees module has no from_list/1 function.
%%
%% The keys in S are not unique. To make sure
%% that we pick the same key/value pairs as
%% dict/orddict, first convert the list to an orddict.
Orddict = orddict:from_list(L),
Mod:from_orddict(Orddict)
end.
%% Store new value into dictionary or update previous value in dictionary.
enter(Mod, Key, Val, Dict) ->
case erlang:function_exported(Mod, store, 3) of
false ->
Mod:enter(Key, Val, Dict);
true ->
Mod:store(Key, Val, Dict)
end.
