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-rw-r--r--lib/stdlib/src/ets.erl121
1 files changed, 62 insertions, 59 deletions
diff --git a/lib/stdlib/src/ets.erl b/lib/stdlib/src/ets.erl
index 9f84e3639f..1d033f6f7b 100644
--- a/lib/stdlib/src/ets.erl
+++ b/lib/stdlib/src/ets.erl
@@ -1,19 +1,19 @@
%%
%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
-%%
+%%
+%% Copyright Ericsson AB 1996-2010. 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(ets).
@@ -42,10 +42,15 @@
-export([i/0, i/1, i/2, i/3]).
-%%------------------------------------------------------------------------------
+-export_type([tab/0, tid/0]).
+
+%%-----------------------------------------------------------------------------
-type tab() :: atom() | tid().
+%% a similar definition is also in erl_types
+-opaque tid() :: integer().
+
-type ext_info() :: 'md5sum' | 'object_count'.
-type protection() :: 'private' | 'protected' | 'public'.
-type type() :: 'bag' | 'duplicate_bag' | 'ordered_set' | 'set'.
@@ -63,7 +68,7 @@
-type match_pattern() :: atom() | tuple().
-type match_specs() :: [{match_pattern(), [_], [_]}].
-%%------------------------------------------------------------------------------
+%%-----------------------------------------------------------------------------
%% The following functions used to be found in this module, but
%% are now BIFs (i.e. implemented in C).
@@ -230,7 +235,7 @@ from_dets(EtsTable, DetsTable) ->
erlang:error(Unexpected,[EtsTable,DetsTable])
end.
--spec to_dets(tab(), dets:tab_name()) -> tab().
+-spec to_dets(tab(), dets:tab_name()) -> dets:tab_name().
to_dets(EtsTable, DetsTable) ->
case (catch dets:from_ets(DetsTable, EtsTable)) of
@@ -622,14 +627,14 @@ do_read_and_verify(ReadFun,InitState,Tab,FtOptions,HeadCount,Verify) ->
end,
{ok,Tab};
{ok,{FinalMD5State,FinalCount,['$end_of_table',LastInfo],_}} ->
- ECount = case lists:keysearch(count,1,LastInfo) of
- {value,{count,N}} ->
+ ECount = case lists:keyfind(count,1,LastInfo) of
+ {count,N} ->
N;
_ ->
false
end,
- EMD5 = case lists:keysearch(md5,1,LastInfo) of
- {value,{md5,M}} ->
+ EMD5 = case lists:keyfind(md5,1,LastInfo) of
+ {md5,M} ->
M;
_ ->
false
@@ -742,22 +747,21 @@ get_header_data(Name,true) ->
false ->
throw(badfile);
true ->
- Major = case lists:keysearch(major,1,L) of
- {value,{major,Maj}} ->
+ Major = case lists:keyfind(major,1,L) of
+ {major,Maj} ->
Maj;
_ ->
0
end,
- Minor = case lists:keysearch(minor,1,L) of
- {value,{minor,Min}} ->
+ Minor = case lists:keyfind(minor,1,L) of
+ {minor,Min} ->
Min;
_ ->
0
end,
FtOptions =
- case lists:keysearch(extended_info,1,L) of
- {value,{extended_info,I}}
- when is_list(I) ->
+ case lists:keyfind(extended_info,1,L) of
+ {extended_info,I} when is_list(I) ->
#filetab_options
{
object_count =
@@ -786,29 +790,28 @@ get_header_data(Name,true) ->
end;
get_header_data(Name, false) ->
- case wrap_chunk(Name,start,1,false) of
+ case wrap_chunk(Name, start, 1, false) of
{C,[Tup]} when is_tuple(Tup) ->
L = tuple_to_list(Tup),
case verify_header_mandatory(L) of
false ->
throw(badfile);
true ->
- Major = case lists:keysearch(major_version,1,L) of
- {value,{major_version,Maj}} ->
+ Major = case lists:keyfind(major_version, 1, L) of
+ {major_version, Maj} ->
Maj;
_ ->
0
end,
- Minor = case lists:keysearch(minor_version,1,L) of
- {value,{minor_version,Min}} ->
+ Minor = case lists:keyfind(minor_version, 1, L) of
+ {minor_version, Min} ->
Min;
_ ->
0
end,
FtOptions =
- case lists:keysearch(extended_info,1,L) of
- {value,{extended_info,I}}
- when is_list(I) ->
+ case lists:keyfind(extended_info, 1, L) of
+ {extended_info, I} when is_list(I) ->
#filetab_options
{
object_count =
@@ -825,25 +828,26 @@ get_header_data(Name, false) ->
throw(badfile)
end.
-md5_and_convert([],MD5State,Count) ->
+md5_and_convert([], MD5State, Count) ->
{[],MD5State,Count,[]};
-md5_and_convert([H|T],MD5State,Count) when is_binary(H) ->
+md5_and_convert([H|T], MD5State, Count) when is_binary(H) ->
case (catch binary_to_term(H)) of
{'EXIT', _} ->
md5_and_convert(T,MD5State,Count);
- ['$end_of_table',Dat] ->
- {[],MD5State,Count,['$end_of_table',Dat]};
+ ['$end_of_table',_Dat] = L ->
+ {[],MD5State,Count,L};
Term ->
- X = erlang:md5_update(MD5State,H),
- {Rest,NewMD5,NewCount,NewLast} = md5_and_convert(T,X,Count+1),
+ X = erlang:md5_update(MD5State, H),
+ {Rest,NewMD5,NewCount,NewLast} = md5_and_convert(T, X, Count+1),
{[Term | Rest],NewMD5,NewCount,NewLast}
end.
-scan_for_endinfo([],Count) ->
+
+scan_for_endinfo([], Count) ->
{[],Count,[]};
-scan_for_endinfo([['$end_of_table',Dat]],Count) ->
+scan_for_endinfo([['$end_of_table',Dat]], Count) ->
{['$end_of_table',Dat],Count,[]};
-scan_for_endinfo([Term|T],Count) ->
- {NewLast,NCount,Rest} = scan_for_endinfo(T,Count+1),
+scan_for_endinfo([Term|T], Count) ->
+ {NewLast,NCount,Rest} = scan_for_endinfo(T, Count+1),
{NewLast,NCount,[Term | Rest]}.
load_table(ReadFun, State, Tab) ->
@@ -852,19 +856,19 @@ load_table(ReadFun, State, Tab) ->
[] ->
{ok,NewState};
List ->
- ets:insert(Tab,List),
- load_table(ReadFun,NewState,Tab)
+ ets:insert(Tab, List),
+ load_table(ReadFun, NewState, Tab)
end.
create_tab(I) ->
- {value, {name, Name}} = lists:keysearch(name, 1, I),
- {value, {type, Type}} = lists:keysearch(type, 1, I),
- {value, {protection, P}} = lists:keysearch(protection, 1, I),
- {value, {named_table, Val}} = lists:keysearch(named_table, 1, I),
- {value, {keypos, Kp}} = lists:keysearch(keypos, 1, I),
- {value, {size, Sz}} = lists:keysearch(size, 1, I),
+ {name, Name} = lists:keyfind(name, 1, I),
+ {type, Type} = lists:keyfind(type, 1, I),
+ {protection, P} = lists:keyfind(protection, 1, I),
+ {named_table, Val} = lists:keyfind(named_table, 1, I),
+ {keypos, _Kp} = Keypos = lists:keyfind(keypos, 1, I),
+ {size, Sz} = lists:keyfind(size, 1, I),
try
- Tab = ets:new(Name, [Type, P, {keypos, Kp} | named_table(Val)]),
+ Tab = ets:new(Name, [Type, P, Keypos | named_table(Val)]),
{ok, Tab, Sz}
catch
_:_ ->
@@ -905,9 +909,9 @@ tabfile_info(File) when is_list(File) ; is_atom(File) ->
{value, Val} = lists:keysearch(named_table, 1, FullHeader),
{value, Kp} = lists:keysearch(keypos, 1, FullHeader),
{value, Sz} = lists:keysearch(size, 1, FullHeader),
- Ei = case lists:keysearch(extended_info, 1, FullHeader) of
- {value, Ei0} -> Ei0;
- _ -> {extended_info, []}
+ Ei = case lists:keyfind(extended_info, 1, FullHeader) of
+ false -> {extended_info, []};
+ Ei0 -> Ei0
end,
{ok, [N,Type,P,Val,Kp,Sz,Ei,{version,{Major,Minor}}]}
catch
@@ -1021,21 +1025,20 @@ options(Option, Keys) ->
options([Option], Keys, []).
options(Options, [Key | Keys], L) when is_list(Options) ->
- V = case lists:keysearch(Key, 1, Options) of
- {value, {n_objects, default}} ->
+ V = case lists:keyfind(Key, 1, Options) of
+ {n_objects, default} ->
{ok, default_option(Key)};
- {value, {n_objects, NObjs}} when is_integer(NObjs),
- NObjs >= 1 ->
+ {n_objects, NObjs} when is_integer(NObjs), NObjs >= 1 ->
{ok, NObjs};
- {value, {traverse, select}} ->
+ {traverse, select} ->
{ok, select};
- {value, {traverse, {select, MS}}} ->
- {ok, {select, MS}};
- {value, {traverse, first_next}} ->
+ {traverse, {select, _MS} = Select} ->
+ {ok, Select};
+ {traverse, first_next} ->
{ok, first_next};
- {value, {traverse, last_prev}} ->
+ {traverse, last_prev} ->
{ok, last_prev};
- {value, {Key, _}} ->
+ {Key, _} ->
badarg;
false ->
Default = default_option(Key),
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 08:22:42 +0000