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-rw-r--r--lib/asn1/src/Makefile16
-rw-r--r--lib/asn1/src/asn1ct_check.erl20
-rw-r--r--lib/asn1/src/asn1ct_constructed_per.erl156
-rw-r--r--lib/asn1/src/asn1ct_gen_per.erl24
-rw-r--r--lib/asn1/src/asn1ct_gen_per_rt2ct.erl24
-rw-r--r--lib/asn1/src/asn1ct_parser2.erl6
6 files changed, 139 insertions, 107 deletions
diff --git a/lib/asn1/src/Makefile b/lib/asn1/src/Makefile
index 5614cbea91..4bd49aa93b 100644
--- a/lib/asn1/src/Makefile
+++ b/lib/asn1/src/Makefile
@@ -153,16 +153,16 @@ $(APPUP_TARGET): $(APPUP_SRC) ../vsn.mk
include $(ERL_TOP)/make/otp_release_targets.mk
release_spec: opt
- $(INSTALL_DIR) $(RELSYSDIR)/ebin
- $(INSTALL_DATA) $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET) $(RELSYSDIR)/ebin
- $(INSTALL_DIR) $(RELSYSDIR)/src
- $(INSTALL_DATA) $(ERL_FILES) $(HRL_FILES) $(APP_SRC) $(APPUP_SRC) $(RELSYSDIR)/src
- $(INSTALL_DIR) $(RELSYSDIR)/examples
- $(INSTALL_DATA) $(EXAMPLES) $(RELSYSDIR)/examples
+ $(INSTALL_DIR) "$(RELSYSDIR)/ebin"
+ $(INSTALL_DATA) $(TARGET_FILES) $(APP_TARGET) $(APPUP_TARGET) "$(RELSYSDIR)/ebin"
+ $(INSTALL_DIR) "$(RELSYSDIR)/src"
+ $(INSTALL_DATA) $(ERL_FILES) $(HRL_FILES) $(APP_SRC) $(APPUP_SRC) "$(RELSYSDIR)/src"
+ $(INSTALL_DIR) "$(RELSYSDIR)/examples"
+ $(INSTALL_DATA) $(EXAMPLES) "$(RELSYSDIR)/examples"
# there are no include files to be used by the user
-#$(INSTALL_DIR) $(RELSYSDIR)/include
-#$(INSTALL_DATA) $(HRL_FILES) $(RELSYSDIR)/include
+#$(INSTALL_DIR) "$(RELSYSDIR)/include"
+#$(INSTALL_DATA) $(HRL_FILES) "$(RELSYSDIR)/include"
release_docs_spec:
diff --git a/lib/asn1/src/asn1ct_check.erl b/lib/asn1/src/asn1ct_check.erl
index 187339fb53..494a2eddd9 100644
--- a/lib/asn1/src/asn1ct_check.erl
+++ b/lib/asn1/src/asn1ct_check.erl
@@ -5991,17 +5991,25 @@ generate_automatic_tags1([H|T],[TagNo|TagNos]) when is_record(H,'ComponentType')
type={default,'IMPLICIT'},
form= 0 }]}, % PRIMITIVE
[H#'ComponentType'{typespec=NewTs}|generate_automatic_tags1(T,[TagNo+1|TagNos])];
-generate_automatic_tags1([ExtMark|T],[_TagNo|TagNos]) -> % EXTENSIONMARK
+generate_automatic_tags1([ExtMark = #'EXTENSIONMARK'{}|T],[_TagNo|TagNos]) ->
[ExtMark | generate_automatic_tags1(T,TagNos)];
+generate_automatic_tags1([H|T],TagList) -> % ExtensionAdditionGroup etc are just ignored
+ [H | generate_automatic_tags1(T,TagList)];
generate_automatic_tags1([],_) ->
[].
-any_manual_tag([#'ComponentType'{typespec=#type{tag=[]}}|Rest]) ->
- any_manual_tag(Rest);
-any_manual_tag([#'EXTENSIONMARK'{}|Rest]) ->
- any_manual_tag(Rest);
-any_manual_tag([_|_Rest]) ->
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Returns true if there is at least one ComponentType with a manually
+%% specified tag. No manual tag is indicated by typespec=#type{tag=[]}
+%% so we check if we find a tag =/= [] and return true in that case
+%% all other things in the componentlist like (EXTENSIONMARK,
+%% ExtensionAdditionGroup,...) except ComponentType is simply
+%% ignored/skipped
+any_manual_tag([#'ComponentType'{typespec=#type{tag=Tag}}|_Rest])
+ when Tag =/= []->
true;
+any_manual_tag([_|Rest]) ->
+ any_manual_tag(Rest);
any_manual_tag([]) ->
false.
diff --git a/lib/asn1/src/asn1ct_constructed_per.erl b/lib/asn1/src/asn1ct_constructed_per.erl
index e07680f10b..5f5138ef23 100644
--- a/lib/asn1/src/asn1ct_constructed_per.erl
+++ b/lib/asn1/src/asn1ct_constructed_per.erl
@@ -100,18 +100,26 @@ gen_encode_constructed(Erule,Typename,D) when is_record(D,type) ->
case Ext of
{ext,_,NumExt} when NumExt > 0 ->
case extgroup_pos_and_length(CompList) of
- {extgrouppos,ExtGroupPos,ExtGroupLen} ->
- Elements = make_elements(ExtGroupPos+1,
- "Val1",lists:seq(1,ExtGroupLen)),
- emit([
- {next,val}," = case [X || X <- [",Elements,
- "],X =/= asn1_NOVALUE] of",nl,
- "[] -> ",{curr,val},";",nl,
- "_ -> setelement(",{asis,ExtGroupPos+1},",",
- {curr,val},",",
- "{extaddgroup,", Elements,"})",nl,
- "end,",nl]),
- asn1ct_name:new(val);
+ {extgrouppos,[]} -> % no extenstionAdditionGroup
+ ok;
+ {extgrouppos,ExtGroupPosLenList} ->
+ ExtGroupFun =
+ fun({ExtActualGroupPos,ExtGroupVirtualPos,ExtGroupLen}) ->
+ Elements =
+ make_elements(ExtGroupVirtualPos+1,
+ "Val1",
+ lists:seq(1,ExtGroupLen)),
+ emit([
+ {next,val}," = case [X || X <- [",Elements,
+ "],X =/= asn1_NOVALUE] of",nl,
+ "[] -> ",{curr,val},";",nl,
+ "_ -> setelement(",{asis,ExtActualGroupPos+1},",",
+ {curr,val},",",
+ "{extaddgroup,", Elements,"})",nl,
+ "end,",nl]),
+ asn1ct_name:new(val)
+ end,
+ lists:foreach(ExtGroupFun,ExtGroupPosLenList);
_ -> % no extensionAdditionGroup
ok
end,
@@ -279,9 +287,9 @@ gen_decode_constructed(Erules,Typename,D) when is_record(D,type) ->
{false,false,false}
end
end,
- NewCompList = wrap_compList(CompList),
+%% NewCompList = wrap_compList(CompList),
{AccTerm,AccBytes} =
- gen_dec_components_call(Erules,Typename,NewCompList,MaybeComma2,DecObjInf,Ext,length(Optionals)),
+ gen_dec_components_call(Erules,Typename,CompList,MaybeComma2,DecObjInf,Ext,length(Optionals)),
case asn1ct_name:all(term) of
[] -> emit(MaybeComma2); % no components at all
_ -> emit({com,nl})
@@ -689,24 +697,28 @@ ext_length([],_,Acc) ->
Acc.
extgroup_pos_and_length(CompList) when is_list(CompList) ->
- noextgroup;
+ {extgrouppos,[]};
extgroup_pos_and_length({RootList,ExtList}) ->
- extgrouppos(ExtList,length(RootList)+1);
-extgroup_pos_and_length({Rl1,Ext,_Rl2}) ->
- extgrouppos(Ext,length(Rl1)+1).
-
-extgrouppos([{'ExtensionAdditionGroup',_Num}|T],Pos) ->
- extgrouppos(T,Pos,0);
-extgrouppos([_|T],Pos) ->
- extgrouppos(T,Pos+1);
-extgrouppos([],_) ->
- noextgroup.
-
-extgrouppos(['ExtensionAdditionGroupEnd'|_T],Pos,Len) ->
- {extgrouppos,Pos,Len};
-extgrouppos([_|T],Pos,Len) ->
- extgrouppos(T,Pos,Len+1).
-
+ ActualPos = length(RootList) +1,
+ %% position to get and deliver data in the record to the user
+ VirtualPos = ActualPos,
+ %% position to encode/decode the extaddgroup as an opentype sequence
+ extgrouppos(ExtList,ActualPos,VirtualPos,[]);
+extgroup_pos_and_length({RootList,ExtList,_Rl2}) ->
+ extgroup_pos_and_length({RootList,ExtList}).
+
+extgrouppos([{'ExtensionAdditionGroup',_Num}|T],ActualPos,VirtualPos,Acc) ->
+ extgrouppos(T,ActualPos,VirtualPos,0,Acc);
+extgrouppos([_|T],ActualPos,VirtualPos,Acc) ->
+ extgrouppos(T,ActualPos+1,VirtualPos+1,Acc);
+extgrouppos([],_,_,Acc) ->
+ {extgrouppos,lists:reverse(Acc)}.
+
+extgrouppos(['ExtensionAdditionGroupEnd'|T],ActualPos,VirtualPos,Len,Acc) ->
+ extgrouppos(T,ActualPos+1,VirtualPos+Len,[{ActualPos,VirtualPos,Len}|Acc]);
+extgrouppos([_|T],ActualPos,VirtualPos,Len,Acc) ->
+ extgrouppos(T,ActualPos,VirtualPos,Len+1,Acc).
+
gen_dec_extension_value(_) ->
@@ -817,19 +829,21 @@ add_textual_order1(Cs,NumIn) ->
end,
NumIn,Cs).
-gen_enc_components_call(Erule,TopType,{Root1,ExtList,Root2},MaybeComma,DynamicEnc,Ext) ->
- gen_enc_components_call(Erule,TopType,{Root1++Root2,ExtList},MaybeComma,DynamicEnc,Ext);
-gen_enc_components_call(Erule,TopType,{CompList,ExtList},MaybeComma,DynamicEnc,Ext) ->
+gen_enc_components_call(Erule,TopType,{Root,ExtList},MaybeComma,DynamicEnc,Ext) ->
+ gen_enc_components_call(Erule,TopType,{Root,ExtList,[]},MaybeComma,DynamicEnc,Ext);
+gen_enc_components_call(Erule,TopType,CL={Root,ExtList,Root2},MaybeComma,DynamicEnc,Ext) ->
%% The type has extensionmarker
- Rpos = gen_enc_components_call1(Erule,TopType,CompList,1,MaybeComma,DynamicEnc,noext),
+ Rpos = gen_enc_components_call1(Erule,TopType,Root++Root2,1,MaybeComma,DynamicEnc,noext),
case Ext of
{ext,_,ExtNum} when ExtNum > 0 ->
emit([nl,
",Extensions",nl]);
+
_ -> true
end,
%handle extensions
- NewExtList = wrap_extensionAdditionGroups(ExtList),
+ {extgrouppos,ExtGroupPosLen} = extgroup_pos_and_length(CL),
+ NewExtList = wrap_extensionAdditionGroups(ExtList,ExtGroupPosLen),
gen_enc_components_call1(Erule,TopType,NewExtList,Rpos,MaybeComma,DynamicEnc,Ext);
gen_enc_components_call(Erule,TopType, CompList, MaybeComma, DynamicEnc, Ext) ->
%% The type has no extensionmarker
@@ -938,7 +952,7 @@ gen_enc_line(Erule,TopType,Cname,Type,Element, _Pos,DynamicEnc,Ext) ->
Atype =
case Type of
#type{def=#'ObjectClassFieldType'{type=InnerType}} ->
- InnerType;
+ InnerType;
_ ->
asn1ct_gen:get_inner(Type#type.def)
end,
@@ -948,6 +962,7 @@ gen_enc_line(Erule,TopType,Cname,Type,Element, _Pos,DynamicEnc,Ext) ->
emit(["?RT_PER:encode_open_type(dummy,?RT_PER:complete("]);
_ -> true
end,
+
case Atype of
{typefield,_} ->
case DynamicEnc of
@@ -1023,20 +1038,22 @@ gen_enc_line(Erule,TopType,Cname,Type,Element, _Pos,DynamicEnc,Ext) ->
emit("))");
_ -> true
end.
-gen_dec_components_call(Erule,TopType,{Root1,ExtList,Root2},MaybeComma,DecInfObj,Ext,NumberOfOptionals) ->
- gen_dec_components_call(Erule,TopType,{Root1++Root2,ExtList},MaybeComma,DecInfObj,Ext,NumberOfOptionals);
-gen_dec_components_call(Erule,TopType,{CompList,ExtList},MaybeComma,
+gen_dec_components_call(Erule,TopType,{Root,ExtList},MaybeComma,
DecInfObj,Ext,NumberOfOptionals) ->
+ gen_dec_components_call(Erule,TopType,{Root,ExtList,[]},MaybeComma,DecInfObj,Ext,NumberOfOptionals);
+gen_dec_components_call(Erule,TopType,CL={Root1,ExtList,Root2},MaybeComma,DecInfObj,Ext,NumberOfOptionals) ->
%% The type has extensionmarker
- OptTable = create_optionality_table(CompList),
+
+ OptTable = create_optionality_table(Root1++Root2),
{Rpos,AccTerm,AccBytes} =
- gen_dec_components_call1(Erule,TopType, CompList, 1, OptTable,
+ gen_dec_components_call1(Erule,TopType, Root1++Root2, 1, OptTable,
MaybeComma,DecInfObj,noext,[],[],
NumberOfOptionals),
emit([",",nl,"{Extensions,",{next,bytes},"} = "]),
emit(["?RT_PER:getextension(Ext,",{curr,bytes},"),",nl]),
asn1ct_name:new(bytes),
- NewExtList = wrap_extensionAdditionGroups(ExtList),
+ {extgrouppos,ExtGroupPosLen} = extgroup_pos_and_length(CL),
+ NewExtList = wrap_extensionAdditionGroups(ExtList,ExtGroupPosLen),
{_Epos,AccTermE,AccBytesE} =
gen_dec_components_call1(Erule,TopType,NewExtList,Rpos, OptTable,
"",DecInfObj,Ext,[],[],NumberOfOptionals),
@@ -1233,8 +1250,7 @@ gen_dec_line(Erule,TopType,Cname,Type,Pos,DecInfObj,Ext,Prop) ->
"} = ?RT_PER:decode_open_type(",{curr,bytes},
", []),",nl]),
emit([indent(2),"case (catch ObjFun(",
- {asis,Name},
- ",",{curr,tmpterm},",telltype,",
+ {asis,Name},",",{curr,tmpterm},",telltype,",
{asis,RestFieldNames},")) of", nl]),
emit([indent(4),"{'EXIT',",{curr,reason},"} ->",nl]),
emit([indent(6),"exit({'Type not ",
@@ -1596,42 +1612,44 @@ flat_complist({Rl1,El,Rl2}) -> Rl1 ++ El ++ Rl2;
flat_complist({Rl,El}) -> Rl ++ El;
flat_complist(CompList) -> CompList.
-wrap_compList({Root1,Ext,Root2}) ->
- {Root1,wrap_extensionAdditionGroups(Ext),Root2};
-wrap_compList({Root1,Ext}) ->
- {Root1,wrap_extensionAdditionGroups(Ext)};
-wrap_compList(CompList) ->
- CompList.
+%%wrap_compList({Root1,Ext,Root2}) ->
+%% {Root1,wrap_extensionAdditionGroups(Ext),Root2};
+%%wrap_compList({Root1,Ext}) ->
+%% {Root1,wrap_extensionAdditionGroups(Ext)};
+%%wrap_compList(CompList) ->
+%% CompList.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Will convert all componentTypes following 'ExtensionAdditionGroup'
%% up to the matching 'ExtensionAdditionGroupEnd' into one componentType
%% of type SEQUENCE with the componentTypes as components
%%
-wrap_extensionAdditionGroups(ExtCompList) ->
- wrap_extensionAdditionGroups(ExtCompList,[],0).
+wrap_extensionAdditionGroups(ExtCompList,ExtGroupPosLen) ->
+ wrap_extensionAdditionGroups(ExtCompList,ExtGroupPosLen,[],0,0).
-wrap_extensionAdditionGroups([{'ExtensionAdditionGroup',_Number}|Rest],Acc,0) ->
- {ExtGroupCompList=
- [#'ComponentType'{textual_order=TextPos}|_],
- ['ExtensionAdditionGroupEnd'|Rest2]} =
+wrap_extensionAdditionGroups([{'ExtensionAdditionGroup',_Number}|Rest],
+ [{ActualPos,_,_}|ExtGroupPosLenRest],Acc,_ExtAddGroupDiff,ExtGroupNum) ->
+ {ExtGroupCompList,['ExtensionAdditionGroupEnd'|Rest2]} =
lists:splitwith(fun(#'ComponentType'{}) -> true;
(_) -> false
end,
Rest),
- wrap_extensionAdditionGroups(Rest2,
+ wrap_extensionAdditionGroups(Rest2,ExtGroupPosLenRest,
[#'ComponentType'{
- name='ExtAddGroup', % FIXME: handles ony one ExtAddGroup
- typespec=#type{def=#'SEQUENCE'{
- extaddgroup=1,% FIXME: handles only one
+ name=list_to_atom("ExtAddGroup"++
+ integer_to_list(ExtGroupNum+1)),
+ typespec=#type{def=#'SEQUENCE'{
+ extaddgroup=ExtGroupNum+1,
components=ExtGroupCompList}},
- textual_order = TextPos,
- prop='OPTIONAL'}|Acc],length(ExtGroupCompList)-1);
-wrap_extensionAdditionGroups([H=#'ComponentType'{textual_order=Tord}|T],Acc,ExtAddGroupDiff) when is_integer(Tord) ->
- wrap_extensionAdditionGroups(T,[H#'ComponentType'{
- textual_order=Tord - ExtAddGroupDiff}|Acc],ExtAddGroupDiff);
-wrap_extensionAdditionGroups([H|T],Acc,ExtAddGroupDiff) ->
- wrap_extensionAdditionGroups(T,[H|Acc],ExtAddGroupDiff);
-wrap_extensionAdditionGroups([],Acc,_) ->
+ textual_order = ActualPos,
+ prop='OPTIONAL'}|Acc],length(ExtGroupCompList)-1,
+ ExtGroupNum+1);
+wrap_extensionAdditionGroups([H=#'ComponentType'{textual_order=Tord}|T],
+ ExtAddGrpLenPos,Acc,ExtAddGroupDiff,ExtGroupNum) when is_integer(Tord) ->
+ wrap_extensionAdditionGroups(T,ExtAddGrpLenPos,[H#'ComponentType'{
+ textual_order=Tord - ExtAddGroupDiff}|Acc],ExtAddGroupDiff,ExtGroupNum);
+wrap_extensionAdditionGroups([H|T],ExtAddGrpLenPos,Acc,ExtAddGroupDiff,ExtGroupNum) ->
+ wrap_extensionAdditionGroups(T,ExtAddGrpLenPos,[H|Acc],ExtAddGroupDiff,ExtGroupNum);
+wrap_extensionAdditionGroups([],_,Acc,_,_) ->
lists:reverse(Acc).
diff --git a/lib/asn1/src/asn1ct_gen_per.erl b/lib/asn1/src/asn1ct_gen_per.erl
index 59b4b3d261..5f42eacbdc 100644
--- a/lib/asn1/src/asn1ct_gen_per.erl
+++ b/lib/asn1/src/asn1ct_gen_per.erl
@@ -1405,19 +1405,21 @@ get_object_field(Name,ObjectFields) ->
%% have been specified within a SEQUENCE, therefore we construct a fake sequence type here
%% so that we can generate code for it
extaddgroup2sequence(ExtList) ->
- extaddgroup2sequence(ExtList,[]).
+ extaddgroup2sequence(ExtList,0,[]).
-extaddgroup2sequence([{'ExtensionAdditionGroup',Number0}|T],Acc) ->
+extaddgroup2sequence([{'ExtensionAdditionGroup',Number0}|T],ExtNum,Acc) ->
Number = case Number0 of undefined -> 1; _ -> Number0 end,
{ExtGroupComps,['ExtensionAdditionGroupEnd'|T2]} =
lists:splitwith(fun(Elem) -> is_record(Elem,'ComponentType') end,T),
- extaddgroup2sequence(T2,[#'ComponentType'{
- name='ExtAddGroup',
- typespec=#type{def=#'SEQUENCE'{
- extaddgroup=Number,
- components=ExtGroupComps}},
- prop='OPTIONAL'}|Acc]);
-extaddgroup2sequence([C|T],Acc) ->
- extaddgroup2sequence(T,[C|Acc]);
-extaddgroup2sequence([],Acc) ->
+ extaddgroup2sequence(T2,ExtNum+1,
+ [#'ComponentType'{
+ name=list_to_atom("ExtAddGroup"++
+ integer_to_list(ExtNum+1)),
+ typespec=#type{def=#'SEQUENCE'{
+ extaddgroup=Number,
+ components=ExtGroupComps}},
+ prop='OPTIONAL'}|Acc]);
+extaddgroup2sequence([C|T],ExtNum,Acc) ->
+ extaddgroup2sequence(T,ExtNum,[C|Acc]);
+extaddgroup2sequence([],_,Acc) ->
lists:reverse(Acc).
diff --git a/lib/asn1/src/asn1ct_gen_per_rt2ct.erl b/lib/asn1/src/asn1ct_gen_per_rt2ct.erl
index 4add659d79..eda0faad3c 100644
--- a/lib/asn1/src/asn1ct_gen_per_rt2ct.erl
+++ b/lib/asn1/src/asn1ct_gen_per_rt2ct.erl
@@ -1808,19 +1808,21 @@ dec_enumerated_cases([],_,_) ->
%% have been specified within a SEQUENCE, therefore we construct a fake sequence type here
%% so that we can generate code for it
extaddgroup2sequence(ExtList) ->
- extaddgroup2sequence(ExtList,[]).
+ extaddgroup2sequence(ExtList,0,[]).
-extaddgroup2sequence([{'ExtensionAdditionGroup',Number0}|T],Acc) ->
+extaddgroup2sequence([{'ExtensionAdditionGroup',Number0}|T],ExtNum,Acc) ->
Number = case Number0 of undefined -> 1; _ -> Number0 end,
{ExtGroupComps,['ExtensionAdditionGroupEnd'|T2]} =
lists:splitwith(fun(Elem) -> is_record(Elem,'ComponentType') end,T),
- extaddgroup2sequence(T2,[#'ComponentType'{
- name='ExtAddGroup',
- typespec=#type{def=#'SEQUENCE'{
- extaddgroup=Number,
- components=ExtGroupComps}},
- prop='OPTIONAL'}|Acc]);
-extaddgroup2sequence([C|T],Acc) ->
- extaddgroup2sequence(T,[C|Acc]);
-extaddgroup2sequence([],Acc) ->
+ extaddgroup2sequence(T2,ExtNum+1,
+ [#'ComponentType'{
+ name=list_to_atom("ExtAddGroup"++
+ integer_to_list(ExtNum+1)),
+ typespec=#type{def=#'SEQUENCE'{
+ extaddgroup=Number,
+ components=ExtGroupComps}},
+ prop='OPTIONAL'}|Acc]);
+extaddgroup2sequence([C|T],ExtNum,Acc) ->
+ extaddgroup2sequence(T,ExtNum,[C|Acc]);
+extaddgroup2sequence([],_,Acc) ->
lists:reverse(Acc).
diff --git a/lib/asn1/src/asn1ct_parser2.erl b/lib/asn1/src/asn1ct_parser2.erl
index 007d390a1b..7301f49085 100644
--- a/lib/asn1/src/asn1ct_parser2.erl
+++ b/lib/asn1/src/asn1ct_parser2.erl
@@ -769,9 +769,11 @@ resolve_module(_Type, Current, undefined) ->
Current;
resolve_module(Type, Current, Imports) ->
case [Mod || #'SymbolsFromModule'{symbols = S, module = Mod} <- Imports,
- #'Externaltypereference'{type = T} <- S,
+ #'Externaltypereference'{type = T} <- S,
Type == T] of
- [#'Externaltypereference'{type = Mod}] -> Mod;
+ [#'Externaltypereference'{type = Mod}|_] -> Mod;
+ %% This allows the same symbol to be imported several times
+ %% which ought to be checked elsewhere and flagged as an error
[] -> Current
end.