Test suites for Dialyzer

This is a transcription of most of the cvs.srv.it.uu.se:/hipe repository
dialyzer_tests into test suites that use the test server framework.

See README for information on how to use the included scripts for
modifications and updates.

When testing Dialyzer it's important that several OTP modules
are included in the plt. The suites takes care of that too.

1 files changed, 1904 insertions, 0 deletions

diff --git a/lib/dialyzer/test/r9c_tests_SUITE_data/src/asn1/asn1ct.erl b/lib/dialyzer/test/r9c_tests_SUITE_data/src/asn1/asn1ct.erl
new file mode 100644
index 0000000000..37189e3780
--- /dev/null
+++ b/lib/dialyzer/test/r9c_tests_SUITE_data/src/asn1/asn1ct.erl
@@ -0,0 +1,1904 @@
+%% ``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 via the world wide web 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.
+%% 
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%% 
+%%     $Id: asn1ct.erl,v 1.1 2008/12/17 09:53:29 mikpe Exp $
+%%
+-module(asn1ct).
+
+%% Compile Time functions for ASN.1 (e.g ASN.1 compiler).
+
+%%-compile(export_all).
+%% Public exports
+-export([compile/1, compile/2]).
+-export([start/0, start/1, stop/0]).
+-export([encode/2, encode/3, decode/3]).
+-export([test/1, test/2, test/3, value/2]).
+%% Application internal exports
+-export([compile_asn/3,compile_asn1/3,compile_py/3,compile/3,value/1,vsn/0,
+	 create_ets_table/2,get_name_of_def/1,get_pos_of_def/1]).
+-export([read_config_data/1,get_gen_state_field/1,get_gen_state/0,
+	 partial_inc_dec_toptype/1,save_gen_state/1,update_gen_state/2,
+	 get_tobe_refed_func/1,reset_gen_state/0,is_function_generated/1,
+	 generated_refed_func/1,next_refed_func/0,pop_namelist/0,
+	 next_namelist_el/0,update_namelist/1,step_in_constructed/0,
+	 add_tobe_refed_func/1,add_generated_refed_func/1]).
+
+-include("asn1_records.hrl").
+-include_lib("stdlib/include/erl_compile.hrl").
+
+-import(asn1ct_gen_ber_bin_v2,[encode_tag_val/3,decode_class/1]).
+
+-define(unique_names,0).
+-define(dupl_uniquedefs,1).
+-define(dupl_equaldefs,2).
+-define(dupl_eqdefs_uniquedefs,?dupl_equaldefs bor ?dupl_uniquedefs).
+
+-define(CONSTRUCTED, 2#00100000). 
+
+%% macros used for partial decode commands
+-define(CHOOSEN,choosen).
+-define(SKIP,skip).
+-define(SKIP_OPTIONAL,skip_optional).
+
+%% macros used for partial incomplete decode commands
+-define(MANDATORY,mandatory).
+-define(DEFAULT,default).
+-define(OPTIONAL,opt).
+-define(PARTS,parts).
+-define(UNDECODED,undec).
+-define(ALTERNATIVE,alt).
+-define(ALTERNATIVE_UNDECODED,alt_undec).
+-define(ALTERNATIVE_PARTS,alt_parts).
+%-define(BINARY,bin).
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% This is the interface to the compiler
+%% 
+%% 
+
+
+compile(File) ->
+    compile(File,[]).
+
+compile(File,Options) when list(Options) ->
+    Options1 =
+	case {lists:member(optimize,Options),lists:member(ber_bin,Options)} of
+	    {true,true} -> 
+		[ber_bin_v2|Options--[ber_bin]];
+	    _ -> Options
+	end,
+    case (catch input_file_type(File)) of
+	{single_file,PrefixedFile} ->
+	    (catch compile1(PrefixedFile,Options1));
+	{multiple_files_file,SetBase,FileName} ->
+	    FileList = get_file_list(FileName),
+	    (catch compile_set(SetBase,filename:dirname(FileName),
+			       FileList,Options1));
+	Err = {input_file_error,_Reason} ->
+	    {error,Err}
+    end.
+
+
+compile1(File,Options) when list(Options) ->
+    io:format("Erlang ASN.1 version ~p compiling ~p ~n",[?vsn,File]),
+    io:format("Compiler Options: ~p~n",[Options]),
+    Ext = filename:extension(File),
+    Base = filename:basename(File,Ext),
+    OutFile = outfile(Base,"",Options),
+    DbFile = outfile(Base,"asn1db",Options),
+    Includes = [I || {i,I} <- Options],
+    EncodingRule = get_rule(Options),
+    create_ets_table(asn1_functab,[named_table]),
+    Continue1 = scan({true,true},File,Options),
+    Continue2 = parse(Continue1,File,Options),
+    Continue3 = check(Continue2,File,OutFile,Includes,EncodingRule,
+		      DbFile,Options,[]),
+    Continue4 = generate(Continue3,OutFile,EncodingRule,Options),
+    delete_tables([asn1_functab]),
+    compile_erl(Continue4,OutFile,Options).
+
+%%****************************************************************************%%
+%% functions dealing with compiling of several input files to one output file %%
+%%****************************************************************************%%
+compile_set(SetBase,DirName,Files,Options) when list(hd(Files)),list(Options) ->
+    %% case when there are several input files in a list
+    io:format("Erlang ASN.1 version ~p compiling ~p ~n",[?vsn,Files]),    
+    io:format("Compiler Options: ~p~n",[Options]),
+    OutFile = outfile(SetBase,"",Options),
+    DbFile = outfile(SetBase,"asn1db",Options),
+    Includes = [I || {i,I} <- Options],
+    EncodingRule = get_rule(Options),
+    create_ets_table(asn1_functab,[named_table]),
+    ScanRes = scan_set(DirName,Files,Options),
+    ParseRes = parse_set(ScanRes,Options),
+    Result = 
+	case [X||X <- ParseRes,element(1,X)==true] of
+	    [] -> %% all were false, time to quit
+		lists:map(fun(X)->element(2,X) end,ParseRes);
+	    ParseRes -> %% all were true, continue with check
+		InputModules = 
+		    lists:map(
+		      fun(F)->
+			      E = filename:extension(F),
+			      B = filename:basename(F,E),
+			      if
+				  list(B) -> list_to_atom(B);
+				  true -> B
+			      end
+		      end,
+		      Files),
+		check_set(ParseRes,SetBase,OutFile,Includes,
+			  EncodingRule,DbFile,Options,InputModules);
+	    Other ->
+		{error,{'unexpected error in scan/parse phase',
+			lists:map(fun(X)->element(3,X) end,Other)}}
+	end,
+    delete_tables([asn1_functab]),
+    Result.
+
+check_set(ParseRes,SetBase,OutFile,Includes,EncRule,DbFile,
+	  Options,InputModules) ->
+    lists:foreach(fun({_T,M,File})->
+			  cmp(M#module.name,File)
+		  end,
+		  ParseRes),
+    MergedModule = merge_modules(ParseRes,SetBase),
+    SetM = MergedModule#module{name=SetBase},
+    Continue1 = check({true,SetM},SetBase,OutFile,Includes,EncRule,DbFile,
+		      Options,InputModules),
+    Continue2 = generate(Continue1,OutFile,EncRule,Options),
+
+    delete_tables([renamed_defs,original_imports,automatic_tags]),
+
+    compile_erl(Continue2,OutFile,Options).
+
+%% merge_modules/2 -> returns a module record where the typeorval lists are merged,
+%% the exports lists are merged, the imports lists are merged when the 
+%% elements come from other modules than the merge set, the tagdefault 
+%% field gets the shared value if all modules have same tagging scheme,
+%% otherwise a tagging_error exception is thrown, 
+%% the extensiondefault ...(not handled yet).
+merge_modules(ParseRes,CommonName) ->
+    ModuleList = lists:map(fun(X)->element(2,X) end,ParseRes),
+    NewModuleList = remove_name_collisions(ModuleList),
+    case ets:info(renamed_defs,size) of
+	0 -> ets:delete(renamed_defs);
+	_ -> ok
+    end,
+    save_imports(NewModuleList),
+%    io:format("~p~n~p~n~p~n~n",[ets:lookup(original_imports,'M1'),ets:lookup(original_imports,'M2'),ets:tab2list(original_imports)]),
+    TypeOrVal = lists:append(lists:map(fun(X)->X#module.typeorval end,
+				       NewModuleList)),
+    InputMNameList = lists:map(fun(X)->X#module.name end,
+			       NewModuleList),
+    CExports = common_exports(NewModuleList),
+   
+    ImportsModuleNameList = lists:map(fun(X)->
+					      {X#module.imports,
+					       X#module.name} end,
+				      NewModuleList),
+    %% ImportsModuleNameList: [{Imports,ModuleName},...]
+    %% Imports is a tuple {imports,[#'SymbolsFromModule'{},...]}
+    CImports = common_imports(ImportsModuleNameList,InputMNameList),
+    TagDefault = check_tagdefault(NewModuleList),
+    #module{name=CommonName,tagdefault=TagDefault,exports=CExports,
+	    imports=CImports,typeorval=TypeOrVal}.
+
+%% causes an exit if duplicate definition names exist in a module
+remove_name_collisions(Modules) ->
+    create_ets_table(renamed_defs,[named_table]),
+    %% Name duplicates in the same module is not allowed.
+    lists:foreach(fun exit_if_nameduplicate/1,Modules),
+    %% Then remove duplicates in different modules and return the
+    %% new list of modules.
+    remove_name_collisions2(Modules,[]).
+
+%% For each definition in the first module in module list, find
+%% all definitons with same name and rename both definitions in
+%% the first module and in rest of modules
+remove_name_collisions2([M|Ms],Acc) ->
+    TypeOrVal = M#module.typeorval,
+    MName = M#module.name,
+    %% Test each name in TypeOrVal on all modules in Ms
+    {NewM,NewMs} = remove_name_collisions2(MName,TypeOrVal,Ms,[]),
+    remove_name_collisions2(NewMs,[M#module{typeorval=NewM}|Acc]);
+remove_name_collisions2([],Acc) ->
+    finished_warn_prints(),
+    Acc.
+
+%% For each definition in list of defs find definitions in (rest of)
+%% modules that have same name. If duplicate was found rename def.
+%% Test each name in [T|Ts] on all modules in Ms
+remove_name_collisions2(ModName,[T|Ts],Ms,Acc) ->
+    Name = get_name_of_def(T),
+    case discover_dupl_in_mods(Name,T,Ms,[],?unique_names) of
+	{_,?unique_names} -> % there was no name collision
+	    remove_name_collisions2(ModName,Ts,Ms,[T|Acc]);
+	{NewMs,?dupl_uniquedefs} -> % renamed defs in NewMs
+	    %% rename T
+	    NewT = set_name_of_def(ModName,Name,T), %rename def
+	    warn_renamed_def(ModName,get_name_of_def(NewT),Name),
+	    ets:insert(renamed_defs,{get_name_of_def(NewT),Name,ModName}),
+	    remove_name_collisions2(ModName,Ts,NewMs,[NewT|Acc]);
+	{NewMs,?dupl_equaldefs} -> % name duplicates, but identical defs
+	    %% keep name of T
+	    warn_kept_def(ModName,Name),
+	    remove_name_collisions2(ModName,Ts,NewMs,[T|Acc]);
+	{NewMs,?dupl_eqdefs_uniquedefs} ->
+	    %% keep name of T, renamed defs in NewMs
+	    warn_kept_def(ModName,Name),
+	    remove_name_collisions2(ModName,Ts,NewMs,[T|Acc])
+    end;
+remove_name_collisions2(_,[],Ms,Acc) ->
+    {Acc,Ms}.
+
+%% Name is the name of a definition. If a definition with the same name
+%% is found in the modules Ms the definition will be renamed and returned.
+discover_dupl_in_mods(Name,Def,[M=#module{name=N,typeorval=TorV}|Ms],
+			      Acc,AnyRenamed) ->
+    Fun = fun(T,RenamedOrDupl)->
+		  case {get_name_of_def(T),compare_defs(Def,T)} of
+		      {Name,not_equal} ->
+			  %% rename def
+			  NewT=set_name_of_def(N,Name,T),
+			  warn_renamed_def(N,get_name_of_def(NewT),Name),
+			  ets:insert(renamed_defs,{get_name_of_def(NewT),
+						   Name,N}),
+			  {NewT,?dupl_uniquedefs bor RenamedOrDupl};
+		      {Name,equal} ->
+			  %% delete def
+			  warn_deleted_def(N,Name),
+			  {[],?dupl_equaldefs bor RenamedOrDupl};
+		      _ ->
+			  {T,RenamedOrDupl}
+		  end
+	  end,
+    {NewTorV,NewAnyRenamed} = lists:mapfoldl(Fun,AnyRenamed,TorV),
+    %% have to flatten the NewTorV to remove any empty list elements
+    discover_dupl_in_mods(Name,Def,Ms,
+			  [M#module{typeorval=lists:flatten(NewTorV)}|Acc],
+			  NewAnyRenamed);
+discover_dupl_in_mods(_,_,[],Acc,AnyRenamed) ->
+    {Acc,AnyRenamed}.
+
+warn_renamed_def(ModName,NewName,OldName) ->
+    maybe_first_warn_print(),
+    io:format("NOTICE: The ASN.1 definition in module ~p with name ~p has been renamed in generated module. New name is ~p.~n",[ModName,OldName,NewName]).
+
+warn_deleted_def(ModName,DefName) ->
+    maybe_first_warn_print(),
+    io:format("NOTICE: The ASN.1 definition in module ~p with name ~p has been deleted in generated module.~n",[ModName,DefName]).
+
+warn_kept_def(ModName,DefName) ->
+    maybe_first_warn_print(),
+    io:format("NOTICE: The ASN.1 definition in module ~p with name ~p has kept its name due to equal definition as duplicate.~n",[ModName,DefName]).
+
+maybe_first_warn_print() ->
+    case get(warn_duplicate_defs) of
+	undefined ->
+	    put(warn_duplicate_defs,true),
+	    io:format("~nDue to multiple occurrences of a definition name in "
+		      "multi-file compiled files:~n");
+	_ ->
+	    ok
+    end.
+finished_warn_prints() ->
+    put(warn_duplicate_defs,undefined).
+
+
+exit_if_nameduplicate(#module{typeorval=TorV}) ->
+    exit_if_nameduplicate(TorV);
+exit_if_nameduplicate([]) ->
+    ok;
+exit_if_nameduplicate([Def|Rest]) ->
+    Name=get_name_of_def(Def),
+    exit_if_nameduplicate2(Name,Rest),
+    exit_if_nameduplicate(Rest).
+
+exit_if_nameduplicate2(Name,Rest) ->
+    Pred=fun(Def)->
+		 case get_name_of_def(Def) of
+		     Name -> true;
+		     _ -> false
+		 end
+	 end,
+        case lists:any(Pred,Rest) of
+	true ->
+	    throw({error,{"more than one definition with same name",Name}});
+	_ ->
+	    ok
+    end.
+
+compare_defs(D1,D2) ->
+    compare_defs2(unset_pos(D1),unset_pos(D2)).
+compare_defs2(D,D) ->
+    equal;
+compare_defs2(_,_) ->
+    not_equal.
+
+unset_pos(Def) when record(Def,typedef) ->
+    Def#typedef{pos=undefined};
+unset_pos(Def) when record(Def,classdef) ->
+    Def#classdef{pos=undefined};
+unset_pos(Def) when record(Def,valuedef) ->
+    Def#valuedef{pos=undefined};
+unset_pos(Def) when record(Def,ptypedef) ->
+    Def#ptypedef{pos=undefined};
+unset_pos(Def) when record(Def,pvaluedef) ->
+    Def#pvaluedef{pos=undefined};
+unset_pos(Def) when record(Def,pvaluesetdef) ->
+    Def#pvaluesetdef{pos=undefined};
+unset_pos(Def) when record(Def,pobjectdef) ->
+    Def#pobjectdef{pos=undefined};
+unset_pos(Def) when record(Def,pobjectsetdef) ->
+    Def#pobjectsetdef{pos=undefined}.
+
+get_pos_of_def(#typedef{pos=Pos}) ->
+    Pos;
+get_pos_of_def(#classdef{pos=Pos}) ->
+    Pos;
+get_pos_of_def(#valuedef{pos=Pos}) ->
+    Pos;
+get_pos_of_def(#ptypedef{pos=Pos}) ->
+    Pos;
+get_pos_of_def(#pvaluedef{pos=Pos}) ->
+    Pos;
+get_pos_of_def(#pvaluesetdef{pos=Pos}) ->
+    Pos;
+get_pos_of_def(#pobjectdef{pos=Pos}) ->
+    Pos;
+get_pos_of_def(#pobjectsetdef{pos=Pos}) ->
+    Pos.
+    
+    
+get_name_of_def(#typedef{name=Name}) ->
+    Name;
+get_name_of_def(#classdef{name=Name}) ->
+    Name;
+get_name_of_def(#valuedef{name=Name}) ->
+    Name;
+get_name_of_def(#ptypedef{name=Name}) ->
+    Name;
+get_name_of_def(#pvaluedef{name=Name}) ->
+    Name;
+get_name_of_def(#pvaluesetdef{name=Name}) ->
+    Name;
+get_name_of_def(#pobjectdef{name=Name}) ->
+    Name;
+get_name_of_def(#pobjectsetdef{name=Name}) ->
+    Name.
+
+set_name_of_def(ModName,Name,OldDef) ->
+    NewName = list_to_atom(lists:concat([Name,ModName])),
+    case OldDef of
+	#typedef{} -> OldDef#typedef{name=NewName};
+	#classdef{} -> OldDef#classdef{name=NewName};
+	#valuedef{} -> OldDef#valuedef{name=NewName};
+	#ptypedef{} -> OldDef#ptypedef{name=NewName};
+	#pvaluedef{} -> OldDef#pvaluedef{name=NewName};
+	#pvaluesetdef{} -> OldDef#pvaluesetdef{name=NewName};
+	#pobjectdef{} -> OldDef#pobjectdef{name=NewName};
+	#pobjectsetdef{} -> OldDef#pobjectsetdef{name=NewName}
+    end.
+
+save_imports(ModuleList)->
+    Fun = fun(M) ->
+		  case M#module.imports of
+		      {_,[]} -> [];
+		      {_,I} -> 
+			  {M#module.name,I}
+		  end
+	  end,
+    ImportsList = lists:map(Fun,ModuleList),
+    case lists:flatten(ImportsList) of
+	[] ->
+	    ok;
+	ImportsList2 ->
+	    create_ets_table(original_imports,[named_table]),
+	    ets:insert(original_imports,ImportsList2)
+    end.
+				    
+	    
+common_exports(ModuleList) ->
+    %% if all modules exports 'all' then export 'all', 
+    %% otherwise export each typeorval name
+    case lists:filter(fun(X)->
+			      element(2,X#module.exports) /= all
+		      end,
+		      ModuleList) of
+	[]->
+	    {exports,all};
+	ModsWithExpList ->
+	    CExports1 = 
+		lists:append(lists:map(fun(X)->element(2,X#module.exports) end,
+				       ModsWithExpList)),
+	    CExports2 = export_all(lists:subtract(ModuleList,ModsWithExpList)),
+	    {exports,CExports1++CExports2}
+    end.
+
+export_all([])->[];
+export_all(ModuleList) ->
+    ExpList =
+	lists:map(
+	  fun(M)->
+		  TorVL=M#module.typeorval,
+		  MName = M#module.name,
+		  lists:map(
+		    fun(Def)->
+			    case Def of
+				T when record(T,typedef)->
+				    #'Externaltypereference'{pos=0,
+							     module=MName,
+							     type=T#typedef.name};
+				V when record(V,valuedef) ->
+				    #'Externalvaluereference'{pos=0,
+							      module=MName,
+							      value=V#valuedef.name};
+				C when record(C,classdef) ->
+				    #'Externaltypereference'{pos=0,
+							     module=MName,
+							     type=C#classdef.name};
+				P when record(P,ptypedef) ->
+				    #'Externaltypereference'{pos=0,
+							     module=MName,
+							     type=P#ptypedef.name};
+				PV when record(PV,pvaluesetdef) ->
+				    #'Externaltypereference'{pos=0,
+							     module=MName,
+							     type=PV#pvaluesetdef.name};
+				PO when record(PO,pobjectdef) ->
+				    #'Externalvaluereference'{pos=0,
+							      module=MName,
+							      value=PO#pobjectdef.name}
+			    end
+		    end,
+		    TorVL)
+	  end,
+	  ModuleList),
+    lists:append(ExpList).
+
+%% common_imports/2
+%% IList is a list of tuples, {Imports,MName}, where Imports is the imports of
+%% the module with name MName.
+%% InputMNameL holds the names of all merged modules.
+%% Returns an import tuple with a list of imports that are external the merged
+%% set of modules.
+common_imports(IList,InputMNameL) ->
+    SetExternalImportsList = remove_in_set_imports(IList,InputMNameL,[]),
+    {imports,remove_import_doubles(SetExternalImportsList)}.
+
+check_tagdefault(ModList) ->
+    case have_same_tagdefault(ModList) of
+	{true,TagDefault}  -> TagDefault;
+	{false,TagDefault} ->
+	    create_ets_table(automatic_tags,[named_table]),
+	    save_automatic_tagged_types(ModList),
+	    TagDefault
+    end.
+
+have_same_tagdefault([#module{tagdefault=T}|Ms]) ->
+    have_same_tagdefault(Ms,{true,T}).
+
+have_same_tagdefault([],TagDefault) ->
+    TagDefault;
+have_same_tagdefault([#module{tagdefault=T}|Ms],TDefault={_,T}) ->
+    have_same_tagdefault(Ms,TDefault);
+have_same_tagdefault([#module{tagdefault=T1}|Ms],{_,T2}) ->
+    have_same_tagdefault(Ms,{false,rank_tagdef([T1,T2])}).
+
+rank_tagdef(L) ->
+    case lists:member('EXPLICIT',L) of
+	true -> 'EXPLICIT';
+	_ -> 'IMPLICIT'
+    end.
+
+save_automatic_tagged_types([])->
+    done;
+save_automatic_tagged_types([#module{tagdefault='AUTOMATIC',
+				     typeorval=TorV}|Ms]) ->
+    Fun =
+	fun(T) ->
+		ets:insert(automatic_tags,{get_name_of_def(T)})
+	end,
+    lists:foreach(Fun,TorV),
+    save_automatic_tagged_types(Ms);
+save_automatic_tagged_types([_M|Ms]) ->
+    save_automatic_tagged_types(Ms).
+
+%% remove_in_set_imports/3 :
+%% input: list with tuples of each module's imports and module name 
+%% respectively.
+%% output: one list with same format but each occured import from a
+%% module in the input set (IMNameL) is removed.
+remove_in_set_imports([{{imports,ImpL},_ModName}|Rest],InputMNameL,Acc) ->
+    NewImpL = remove_in_set_imports1(ImpL,InputMNameL,[]),
+    remove_in_set_imports(Rest,InputMNameL,NewImpL++Acc);
+remove_in_set_imports([],_,Acc) ->
+    lists:reverse(Acc).
+
+remove_in_set_imports1([I|Is],InputMNameL,Acc) ->
+    case I#'SymbolsFromModule'.module of
+	#'Externaltypereference'{type=MName} ->
+	    case lists:member(MName,InputMNameL) of
+		true ->
+		    remove_in_set_imports1(Is,InputMNameL,Acc);
+		false ->
+		    remove_in_set_imports1(Is,InputMNameL,[I|Acc])
+	    end;
+	_ ->
+	    remove_in_set_imports1(Is,InputMNameL,[I|Acc])
+    end;
+remove_in_set_imports1([],_,Acc) ->
+    lists:reverse(Acc).
+
+remove_import_doubles([]) ->
+    [];
+%% If several modules in the merge set imports symbols from
+%% the same external module it might be doubled.
+%% ImportList has #'SymbolsFromModule' elements
+remove_import_doubles(ImportList) ->
+    MergedImportList = 
+	merge_symbols_from_module(ImportList,[]),
+%%    io:format("MergedImportList: ~p~n",[MergedImportList]),
+    delete_double_of_symbol(MergedImportList,[]).
+
+merge_symbols_from_module([Imp|Imps],Acc) ->
+    #'Externaltypereference'{type=ModName} = Imp#'SymbolsFromModule'.module,
+    IfromModName = 
+	lists:filter(
+	  fun(I)->
+		  case I#'SymbolsFromModule'.module of
+		      #'Externaltypereference'{type=ModName} ->
+			  true;
+		      #'Externalvaluereference'{value=ModName} ->
+			  true;
+		      _ -> false
+		  end
+	  end,
+	  Imps),
+    NewImps = lists:subtract(Imps,IfromModName),
+%%    io:format("Imp: ~p~nIfromModName: ~p~n",[Imp,IfromModName]),
+    NewImp =
+	Imp#'SymbolsFromModule'{
+	  symbols = lists:append(
+		      lists:map(fun(SL)->
+					SL#'SymbolsFromModule'.symbols 
+				end,[Imp|IfromModName]))},
+    merge_symbols_from_module(NewImps,[NewImp|Acc]);
+merge_symbols_from_module([],Acc) ->
+    lists:reverse(Acc).
+
+delete_double_of_symbol([I|Is],Acc) ->
+    SymL=I#'SymbolsFromModule'.symbols,
+    NewSymL = delete_double_of_symbol1(SymL,[]),
+    delete_double_of_symbol(Is,[I#'SymbolsFromModule'{symbols=NewSymL}|Acc]);
+delete_double_of_symbol([],Acc) ->
+    Acc.
+
+delete_double_of_symbol1([TRef=#'Externaltypereference'{type=TrefName}|Rest],Acc)->
+    NewRest = 
+	lists:filter(fun(S)->
+			     case S of
+				 #'Externaltypereference'{type=TrefName}->
+				     false;
+				 _ -> true
+			     end
+		     end,
+		     Rest),
+    delete_double_of_symbol1(NewRest,[TRef|Acc]);
+delete_double_of_symbol1([VRef=#'Externalvaluereference'{value=VName}|Rest],Acc) ->
+    NewRest = 
+	lists:filter(fun(S)->
+			     case S of
+				 #'Externalvaluereference'{value=VName}->
+				     false;
+				 _ -> true
+			     end
+		     end,
+		     Rest),
+    delete_double_of_symbol1(NewRest,[VRef|Acc]);
+delete_double_of_symbol1([TRef={#'Externaltypereference'{type=MRef},
+				#'Externaltypereference'{type=TRef}}|Rest],
+			 Acc)->
+    NewRest = 
+	lists:filter(
+	  fun(S)->
+		  case S of
+		      {#'Externaltypereference'{type=MRef},
+		       #'Externaltypereference'{type=TRef}}->
+			  false;
+		      _ -> true
+		  end
+	  end,
+	  Rest),
+    delete_double_of_symbol1(NewRest,[TRef|Acc]);
+delete_double_of_symbol1([],Acc) ->
+    Acc.
+
+
+scan_set(DirName,Files,Options) ->
+    lists:map(
+      fun(F)->
+	      case scan({true,true},filename:join([DirName,F]),Options) of
+		  {false,{error,Reason}} ->
+		      throw({error,{'scan error in file:',F,Reason}});
+		  {TrueOrFalse,Res} ->
+		      {TrueOrFalse,Res,F}
+	      end
+      end,
+      Files).
+
+parse_set(ScanRes,Options) ->
+    lists:map(
+      fun({TorF,Toks,F})->
+	      case parse({TorF,Toks},F,Options) of
+		  {false,{error,Reason}} ->
+		      throw({error,{'parse error in file:',F,Reason}});
+		  {TrueOrFalse,Res} ->
+		      {TrueOrFalse,Res,F}
+	      end
+      end,
+      ScanRes).
+
+
+%%***********************************
+
+
+scan({true,_}, File,Options) ->
+    case asn1ct_tok:file(File) of
+	{error,Reason} ->
+	    io:format("~p~n",[Reason]),
+	    {false,{error,Reason}};
+        Tokens ->
+	    case lists:member(ss,Options) of
+		true -> % we terminate after scan
+		    {false,Tokens};
+		false -> % continue with next pass
+		    {true,Tokens}
+	    end
+    end;
+scan({false,Result},_,_) ->
+    Result.
+
+
+parse({true,Tokens},File,Options) ->
+    %Presult = asn1ct_parser2:parse(Tokens),
+    %%case lists:member(p1,Options) of
+    %%		  true ->
+    %%		      asn1ct_parser:parse(Tokens);
+    %%		  _ ->
+    %%		      asn1ct_parser2:parse(Tokens)
+    %%	      end,
+    case catch asn1ct_parser2:parse(Tokens) of
+	{error,{{Line,_Mod,Message},_TokTup}} ->
+	    if 
+		integer(Line) ->
+		    BaseName = filename:basename(File),
+		    io:format("syntax error at line ~p in module ~s:~n",
+			      [Line,BaseName]);
+		true ->
+		    io:format("syntax error in module ~p:~n",[File])
+	    end,
+	    print_error_message(Message),
+	    {false,{error,Message}};
+	{error,{Line,_Mod,[Message,Token]}} ->
+	    io:format("syntax error: ~p ~p at line ~p~n",
+		      [Message,Token,Line]),
+	    {false,{error,{Line,[Message,Token]}}};
+	{ok,M} ->
+	    case lists:member(sp,Options) of
+		true -> % terminate after parse
+		    {false,M};
+		false -> % continue with next pass
+		    {true,M}
+	    end;
+	OtherError ->
+	    io:format("~p~n",[OtherError])
+    end;
+parse({false,Tokens},_,_) ->
+    {false,Tokens}.
+
+check({true,M},File,OutFile,Includes,EncodingRule,DbFile,Options,InputMods) ->
+    cmp(M#module.name,File),
+    start(["."|Includes]),
+    case asn1ct_check:storeindb(M) of 
+	ok   ->
+	    Module = asn1_db:dbget(M#module.name,'MODULE'),
+	    State = #state{mname=Module#module.name,
+			   module=Module#module{typeorval=[]},
+			   erule=EncodingRule,
+			   inputmodules=InputMods,
+			   options=Options},
+	    Check = asn1ct_check:check(State,Module#module.typeorval),
+	    case {Check,lists:member(abs,Options)} of
+		{{error,Reason},_} ->
+		    {false,{error,Reason}};
+		{{ok,NewTypeOrVal,_},true} ->
+		    NewM = Module#module{typeorval=NewTypeOrVal},
+		    asn1_db:dbput(NewM#module.name,'MODULE',NewM),
+		    pretty2(M#module.name,lists:concat([OutFile,".abs"])),
+		    {false,ok};
+		{{ok,NewTypeOrVal,GenTypeOrVal},_} ->
+		    NewM = Module#module{typeorval=NewTypeOrVal},
+		    asn1_db:dbput(NewM#module.name,'MODULE',NewM),
+		    asn1_db:dbsave(DbFile,M#module.name),
+		    io:format("--~p--~n",[{generated,DbFile}]),
+		    {true,{M,NewM,GenTypeOrVal}}
+	    end
+    end;
+check({false,M},_,_,_,_,_,_,_) ->
+    {false,M}.
+
+generate({true,{M,_Module,GenTOrV}},OutFile,EncodingRule,Options) ->
+    debug_on(Options),
+    case lists:member(compact_bit_string,Options) of
+	true -> put(compact_bit_string,true);
+	_ -> ok
+    end,
+    put(encoding_options,Options),
+    create_ets_table(check_functions,[named_table]),
+
+    %% create decoding function names and taglists for partial decode
+    %% For the time being leave errors unnoticed !!!!!!!!!
+%    io:format("Options: ~p~n",[Options]),
+    case catch specialized_decode_prepare(EncodingRule,M,GenTOrV,Options) of
+	{error, enoent} -> ok;
+	{error, Reason} -> io:format("WARNING: Error in configuration"
+				     "file: ~n~p~n",[Reason]);
+	{'EXIT',Reason} -> io:format("WARNING: Internal error when "
+				     "analyzing configuration"
+				     "file: ~n~p~n",[Reason]);
+	_ -> ok
+    end,
+
+    asn1ct_gen:pgen(OutFile,EncodingRule,M#module.name,GenTOrV),
+    debug_off(Options),
+    put(compact_bit_string,false),
+    erase(encoding_options),
+    erase(tlv_format), % used in ber_bin, optimize
+    erase(class_default_type),% used in ber_bin, optimize
+    ets:delete(check_functions),
+    case lists:member(sg,Options) of
+	true -> % terminate here , with .erl file generated
+	    {false,true};
+	false ->
+	    {true,true}
+    end;
+generate({false,M},_,_,_) ->
+    {false,M}.
+
+compile_erl({true,_},OutFile,Options) ->
+    erl_compile(OutFile,Options);
+compile_erl({false,true},_,_) ->
+    ok;
+compile_erl({false,Result},_,_) ->
+    Result.
+
+input_file_type([]) ->
+    {empty_name,[]};
+input_file_type(File) ->
+    case filename:extension(File) of
+	[] ->
+	    case file:read_file_info(lists:concat([File,".asn1"])) of
+		{ok,_FileInfo} ->
+		    {single_file, lists:concat([File,".asn1"])};
+		_Error ->
+		    case file:read_file_info(lists:concat([File,".asn"])) of
+			{ok,_FileInfo} ->
+			    {single_file, lists:concat([File,".asn"])};
+			_Error ->
+			    {single_file, lists:concat([File,".py"])}
+		    end
+	    end;
+	".asn1config" ->
+	    case read_config_file(File,asn1_module) of
+		{ok,Asn1Module} -> 
+		    put(asn1_config_file,File),
+		    input_file_type(Asn1Module);
+		Error ->
+		    Error
+	    end;
+	Asn1PFix ->
+	    Base = filename:basename(File,Asn1PFix),
+	    case filename:extension(Base) of
+		[] ->
+		    {single_file,File};
+		SetPFix when (SetPFix == ".set") ->
+		    {multiple_files_file,
+		     filename:basename(Base,SetPFix),
+		     File};
+		_Error ->
+		    throw({input_file_error,{'Bad input file',File}})
+	    end
+    end.
+
+get_file_list(File) ->
+    case file:open(File, [read]) of
+	{error,Reason} ->
+	    {error,{File,file:format_error(Reason)}};
+	{ok,Stream} ->
+	    get_file_list1(Stream,[])
+    end.
+
+get_file_list1(Stream,Acc) ->
+    Ret = io:get_line(Stream,''),
+    case Ret of
+	eof ->
+	    file:close(Stream),
+	    lists:reverse(Acc);
+	FileName ->
+	    PrefixedNameList =
+		case (catch input_file_type(lists:delete($\n,FileName))) of
+		    {empty_name,[]} -> [];
+		    {single_file,Name} -> [Name];
+		    {multiple_files_file,Name} ->
+			get_file_list(Name);
+		    Err = {input_file_error,_Reason} ->
+			throw(Err)
+		end,
+	    get_file_list1(Stream,PrefixedNameList++Acc)
+    end.
+
+get_rule(Options) ->
+    case [Rule ||Rule <-[per,ber,ber_bin,ber_bin_v2,per_bin],
+		 Opt <- Options,
+		 Rule==Opt] of
+	[Rule] ->
+	    Rule;
+	[Rule|_] ->
+	    Rule;
+	[] ->
+	    ber
+    end.
+
+erl_compile(OutFile,Options) ->
+%    io:format("Options:~n~p~n",[Options]),
+    case lists:member(noobj,Options) of
+	true ->
+	    ok;
+	_ ->
+	    ErlOptions = remove_asn_flags(Options),
+	    case c:c(OutFile,ErlOptions) of
+		{ok,_Module} ->
+		    ok;
+		_ ->
+		    {error,'no_compilation'}
+	    end
+    end.
+
+remove_asn_flags(Options) ->
+    [X || X <- Options,
+	  X /= get_rule(Options),
+	  X /= optimize,
+	  X /= compact_bit_string,
+	  X /= debug,
+	  X /= keyed_list].
+	  
+debug_on(Options) ->
+    case lists:member(debug,Options) of
+	true ->
+	    put(asndebug,true);
+	_ ->
+	    true
+    end,
+    case lists:member(keyed_list,Options) of
+	true ->
+	    put(asn_keyed_list,true);
+	_ ->
+	    true
+    end.
+
+
+debug_off(_Options) ->
+    erase(asndebug),
+    erase(asn_keyed_list).
+
+
+outfile(Base, Ext, Opts) when atom(Ext) ->
+    outfile(Base, atom_to_list(Ext), Opts);
+outfile(Base, Ext, Opts) ->
+    Obase = case lists:keysearch(outdir, 1, Opts) of
+		{value, {outdir, Odir}} -> filename:join(Odir, Base);
+		_NotFound -> Base % Not found or bad format
+	    end,
+    case Ext of
+	[] ->
+	    Obase;
+	_ ->
+	    Obase++"."++Ext
+    end.
+
+%% compile(AbsFileName, Options)
+%%   Compile entry point for erl_compile.
+
+compile_asn(File,OutFile,Options) ->
+    compile(lists:concat([File,".asn"]),OutFile,Options).
+
+compile_asn1(File,OutFile,Options) ->
+    compile(lists:concat([File,".asn1"]),OutFile,Options).
+
+compile_py(File,OutFile,Options) ->
+    compile(lists:concat([File,".py"]),OutFile,Options).
+
+compile(File, _OutFile, Options) ->
+    case catch compile(File, make_erl_options(Options)) of
+	Exit = {'EXIT',_Reason} ->
+	    io:format("~p~n~s~n",[Exit,"error"]),
+	    error;
+	{error,_Reason} ->
+	    %% case occurs due to error in asn1ct_parser2,asn1ct_check
+%%	    io:format("~p~n",[_Reason]),
+%%	    io:format("~p~n~s~n",[_Reason,"error"]),
+	    error;
+	ok -> 
+	    io:format("ok~n"),
+	    ok;
+	ParseRes when tuple(ParseRes) ->
+	    io:format("~p~n",[ParseRes]),
+	    ok;
+	ScanRes when list(ScanRes) ->
+	    io:format("~p~n",[ScanRes]),
+	    ok;
+	Unknown -> 
+	    io:format("~p~n~s~n",[Unknown,"error"]),
+	    error
+    end.
+
+%% Converts generic compiler options to specific options.
+
+make_erl_options(Opts) ->
+
+    %% This way of extracting will work even if the record passed
+    %% has more fields than known during compilation.
+
+    Includes = Opts#options.includes,
+    Defines = Opts#options.defines,
+    Outdir = Opts#options.outdir,
+%%    Warning = Opts#options.warning,
+    Verbose = Opts#options.verbose,
+    Specific = Opts#options.specific,
+    Optimize = Opts#options.optimize,
+    OutputType = Opts#options.output_type,
+    Cwd = Opts#options.cwd,
+
+    Options =
+	case Verbose of
+	    true ->  [verbose];
+	    false -> []
+	end ++
+%%%	case Warning of
+%%%	    0 -> [];
+%%%	    _ -> [report_warnings]
+%%%	end ++
+	[] ++
+	case Optimize of
+	    1 -> [optimize];
+	    999 -> [];
+	    _ -> [{optimize,Optimize}]
+	end ++
+	lists:map(
+	  fun ({Name, Value}) ->
+		  {d, Name, Value};
+	      (Name) ->
+		  {d, Name}
+	  end,
+	  Defines) ++
+	case OutputType of
+	    undefined -> [ber]; % temporary default (ber when it's ready)
+	    ber -> [ber];
+	    ber_bin -> [ber_bin];
+	    ber_bin_v2 -> [ber_bin_v2];
+	    per -> [per];
+	    per_bin -> [per_bin]
+	end,
+
+    Options++[report_errors, {cwd, Cwd}, {outdir, Outdir}|
+	      lists:map(fun(Dir) -> {i, Dir} end, Includes)]++Specific.
+
+pretty2(Module,AbsFile) ->
+    start(),
+    {ok,F} = file:open(AbsFile, [write]),
+    M = asn1_db:dbget(Module,'MODULE'),
+    io:format(F,"%%%%%%%%%%%%%%%%%%%   ~p  %%%%%%%%%%%%%%%%%%%~n",[Module]),
+    io:format(F,"~s\n",[asn1ct_pretty_format:term(M#module.defid)]),
+    io:format(F,"~s\n",[asn1ct_pretty_format:term(M#module.tagdefault)]),
+    io:format(F,"~s\n",[asn1ct_pretty_format:term(M#module.exports)]),
+    io:format(F,"~s\n",[asn1ct_pretty_format:term(M#module.imports)]),
+    io:format(F,"~s\n\n",[asn1ct_pretty_format:term(M#module.extensiondefault)]),
+
+    {Types,Values,ParameterizedTypes,Classes,Objects,ObjectSets} = M#module.typeorval,
+    io:format(F,"%%%%%%%%%%%%%%%%%%% TYPES in ~p  %%%%%%%%%%%%%%%%%%%~n",[Module]),
+    lists:foreach(fun(T)-> io:format(F,"~s\n",
+				     [asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
+		  end,Types),
+    io:format(F,"%%%%%%%%%%%%%%%%%%% VALUES in ~p  %%%%%%%%%%%%%%%%%%%~n",[Module]),
+    lists:foreach(fun(T)-> io:format(F,"~s\n",
+				     [asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])
+		  end,Values),
+    io:format(F,"%%%%%%%%%%%%%%%%%%% Parameterized Types in ~p  %%%%%%%%%%%%%%%%%%%~n",[Module]),
+    lists:foreach(fun(T)-> io:format(F,"~s\n",
+				     [asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])			   
+		  end,ParameterizedTypes),
+    io:format(F,"%%%%%%%%%%%%%%%%%%% Classes in ~p  %%%%%%%%%%%%%%%%%%%~n",[Module]),
+    lists:foreach(fun(T)-> io:format(F,"~s\n",
+				     [asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])			   
+		  end,Classes),
+    io:format(F,"%%%%%%%%%%%%%%%%%%% Objects in ~p  %%%%%%%%%%%%%%%%%%%~n",[Module]),
+    lists:foreach(fun(T)-> io:format(F,"~s\n",
+				     [asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])			   
+		  end,Objects),
+    io:format(F,"%%%%%%%%%%%%%%%%%%% Object Sets in ~p  %%%%%%%%%%%%%%%%%%%~n",[Module]),
+    lists:foreach(fun(T)-> io:format(F,"~s\n",
+				     [asn1ct_pretty_format:term(asn1_db:dbget(Module,T))])			   
+		  end,ObjectSets).
+start() ->
+    Includes = ["."],
+    start(Includes).
+
+
+start(Includes) when list(Includes) ->
+    asn1_db:dbstart(Includes).
+
+stop() ->
+    save(),
+    asn1_db:stop_server(ns),
+    asn1_db:stop_server(rand),
+    stopped.
+
+save() ->
+    asn1_db:dbstop().
+
+%%clear() ->
+%%    asn1_db:dbclear().
+
+encode(Module,Term) ->
+    asn1rt:encode(Module,Term).
+
+encode(Module,Type,Term) when list(Module) ->
+    asn1rt:encode(list_to_atom(Module),Type,Term);
+encode(Module,Type,Term) ->
+    asn1rt:encode(Module,Type,Term).
+
+decode(Module,Type,Bytes) when list(Module) ->
+    asn1rt:decode(list_to_atom(Module),Type,Bytes);
+decode(Module,Type,Bytes) ->
+    asn1rt:decode(Module,Type,Bytes).
+
+
+test(Module) ->
+    start(),
+    M = asn1_db:dbget(Module,'MODULE'),
+    {Types,_Values,_Ptypes,_Classes,_Objects,_ObjectSets} = M#module.typeorval,
+    test_each(Module,Types).
+
+test_each(Module,[Type | Rest]) ->
+    case test(Module,Type) of
+	{ok,_Result} ->
+	    test_each(Module,Rest);
+	Error ->
+	    Error
+    end;
+test_each(_,[]) ->
+    ok.
+
+test(Module,Type) ->
+    io:format("~p:~p~n",[Module,Type]),
+    case (catch value(Module,Type)) of 
+	{ok,Val} -> 
+	    %%	    io:format("asn1ct:test/2: ~w~n",[Val]),
+	    test(Module,Type,Val);
+	{'EXIT',Reason} -> 
+	    {error,{asn1,{value,Reason}}}
+    end.
+
+
+test(Module,Type,Value) ->
+    case catch encode(Module,Type,Value) of
+	{ok,Bytes} ->
+	    %%	    io:format("test 1: ~p~n",[{Bytes}]),
+	    M = if 
+		    list(Module) ->
+			list_to_atom(Module);
+		    true ->
+			Module
+		end,
+	    NewBytes = 
+		case M:encoding_rule() of
+		    ber ->
+			lists:flatten(Bytes);
+		    ber_bin when binary(Bytes) ->
+			Bytes;
+		    ber_bin ->
+			list_to_binary(Bytes);
+		    ber_bin_v2 when binary(Bytes) ->
+			Bytes;
+		    ber_bin_v2 ->
+			list_to_binary(Bytes);
+		    per ->
+			lists:flatten(Bytes);
+		    per_bin when binary(Bytes) ->
+			Bytes;
+		    per_bin ->
+			list_to_binary(Bytes)
+		end,
+	    case decode(Module,Type,NewBytes) of
+		{ok,Value} -> 
+		    {ok,{Module,Type,Value}};
+		{ok,Res} -> 
+		    {error,{asn1,{encode_decode_mismatch,
+				  {{Module,Type,Value},Res}}}};
+		Error -> 
+		    {error,{asn1,{{decode,
+				   {Module,Type,Value},Error}}}}
+	    end;
+	Error ->
+	    {error,{asn1,{encode,{{Module,Type,Value},Error}}}}
+    end.
+
+value(Module) ->
+    start(),
+    M = asn1_db:dbget(Module,'MODULE'),
+    {Types,_Values,_Ptypes,_Classes,_Objects,_ObjectSets} = M#module.typeorval,
+    lists:map(fun(A) ->value(Module,A) end,Types).
+
+value(Module,Type) ->
+    start(),
+    case catch asn1ct_value:get_type(Module,Type,no) of
+	{error,Reason} ->
+	    {error,Reason};
+	{'EXIT',Reason} ->
+	    {error,Reason};
+	Result ->
+	    {ok,Result}
+    end.
+
+cmp(Module,InFile) ->
+    Base = filename:basename(InFile),
+    Dir = filename:dirname(InFile),
+    Ext = filename:extension(Base),
+    Finfo = file:read_file_info(InFile),
+    Minfo = file:read_file_info(filename:join(Dir,lists:concat([Module,Ext]))),
+    case Finfo of
+	Minfo ->
+	    ok;
+	_ ->
+	    io:format("asn1error: Modulename and filename must be equal~n",[]),
+	    throw(error)
+    end.
+
+vsn() ->
+    ?vsn.
+
+print_error_message([got,H|T]) when list(H) ->
+    io:format(" got:"),
+    print_listing(H,"and"),
+    print_error_message(T);
+print_error_message([expected,H|T]) when list(H) ->
+    io:format(" expected one of:"),
+    print_listing(H,"or"),
+    print_error_message(T);
+print_error_message([H|T])  ->
+    io:format(" ~p",[H]),
+    print_error_message(T);
+print_error_message([]) ->
+    io:format("~n").
+
+print_listing([H1,H2|[]],AndOr) ->
+    io:format(" ~p ~s ~p",[H1,AndOr,H2]);
+print_listing([H1,H2|T],AndOr) ->
+    io:format(" ~p,",[H1]),
+    print_listing([H2|T],AndOr);
+print_listing([H],_AndOr) ->
+    io:format(" ~p",[H]);
+print_listing([],_) ->
+    ok.
+
+
+%% functions to administer ets tables
+
+%% Always creates a new table
+create_ets_table(Name,Options) when atom(Name) ->
+    case ets:info(Name) of
+	undefined ->
+	    ets:new(Name,Options);
+	_  ->
+	    ets:delete(Name),
+	    ets:new(Name,Options)
+    end.
+
+%% Creates a new ets table only if no table exists
+create_if_no_table(Name,Options) ->
+    case ets:info(Name) of
+	undefined ->
+	    %% create a new table
+	    create_ets_table(Name,Options);
+	_ -> ok
+    end.
+    
+
+delete_tables([Table|Ts]) ->
+    case ets:info(Table) of
+	undefined -> ok;
+	_ -> ets:delete(Table)
+    end,
+    delete_tables(Ts);
+delete_tables([]) ->
+    ok.
+
+
+specialized_decode_prepare(Erule,M,TsAndVs,Options) ->
+%     Asn1confMember = 
+% 	fun([{asn1config,File}|_],_) ->
+% 		{true,File};
+% 	   ([],_) -> false;
+% 	   ([_H|T],Fun) ->
+% 		Fun(T,Fun)
+% 	end,
+%     case Asn1confMember(Options,Asn1confMember) of
+%	{true,File} ->
+    case lists:member(asn1config,Options) of
+	true ->
+	    partial_decode_prepare(Erule,M,TsAndVs,Options);
+	_ ->
+	    ok
+    end.
+%% Reads the configuration file if it exists and stores information
+%% about partial decode and incomplete decode
+partial_decode_prepare(ber_bin_v2,M,TsAndVs,Options) when tuple(TsAndVs) ->
+    %% read configure file
+%    Types = element(1,TsAndVs),
+    CfgList = read_config_file(M#module.name),
+    SelectedDecode = get_config_info(CfgList,partial_decode),
+    ExclusiveDecode = get_config_info(CfgList,exclusive_decode),
+    CommandList = 
+	create_partial_decode_gen_info(M#module.name,SelectedDecode),
+%    io:format("partial_decode = ~p~n",[CommandList]),
+    
+    save_config(partial_decode,CommandList),
+    CommandList2 = 
+	create_partial_inc_decode_gen_info(M#module.name,ExclusiveDecode),
+%    io:format("partial_incomplete_decode = ~p~n",[CommandList2]),
+    Part_inc_tlv_tags = tag_format(ber_bin_v2,Options,CommandList2),
+%    io:format("partial_incomplete_decode: tlv_tags = ~p~n",[Part_inc_tlv_tags]),
+    save_config(partial_incomplete_decode,Part_inc_tlv_tags),
+    save_gen_state(ExclusiveDecode,Part_inc_tlv_tags);
+partial_decode_prepare(_,_,_,_) ->
+    ok.
+
+
+
+%% create_partial_inc_decode_gen_info/2
+%%
+%% Creats a list of tags out of the information in TypeNameList that
+%% tells which value will be incomplete decoded, i.e. each end
+%% component/type in TypeNameList. The significant types/components in
+%% the path from the toptype must be specified in the
+%% TypeNameList. Significant elements are all constructed types that
+%% branches the path to the leaf and the leaf it selfs.
+%%
+%% Returns a list of elements, where an element may be one of
+%% mandatory|[opt,Tag]|[bin,Tag]. mandatory correspond to a mandatory
+%% element that shall be decoded as usual. [opt,Tag] matches an
+%% OPTIONAL or DEFAULT element that shall be decoded as
+%% usual. [bin,Tag] corresponds to an element, mandatory, OPTIONAL or
+%% DEFAULT, that shall be left encoded (incomplete decoded).
+create_partial_inc_decode_gen_info(ModName,{Mod,[{Name,L}|Ls]}) when list(L) ->
+    TopTypeName = partial_inc_dec_toptype(L),
+    [{Name,TopTypeName,
+      create_partial_inc_decode_gen_info1(ModName,TopTypeName,{Mod,L})}|
+     create_partial_inc_decode_gen_info(ModName,{Mod,Ls})];
+create_partial_inc_decode_gen_info(_,{_,[]}) ->
+    [];
+create_partial_inc_decode_gen_info(_,[]) ->
+    [].
+
+create_partial_inc_decode_gen_info1(ModName,TopTypeName,{ModName,
+					    [_TopType|Rest]}) ->
+    case asn1_db:dbget(ModName,TopTypeName) of
+	#typedef{typespec=TS} ->
+	    TagCommand = get_tag_command(TS,?MANDATORY,mandatory),
+	    create_pdec_inc_command(ModName,get_components(TS#type.def),
+				    Rest,[TagCommand]);
+	_ ->
+	    throw({error,{"wrong type list in asn1 config file",
+			  TopTypeName}})
+    end;
+create_partial_inc_decode_gen_info1(M1,_,{M2,_}) when M1 /= M2 ->
+    throw({error,{"wrong module name in asn1 config file",
+		  M2}});
+create_partial_inc_decode_gen_info1(_,_,TNL) ->
+    throw({error,{"wrong type list in asn1 config file",
+		  TNL}}).
+
+%%
+%% Only when there is a 'ComponentType' the config data C1 may be a
+%% list, where the incomplete decode is branched. So, C1 may be a
+%% list, a "binary tuple", a "parts tuple" or an atom. The second
+%% element of a binary tuple and a parts tuple is an atom.
+create_pdec_inc_command(_ModName,_,[],Acc) ->
+    lists:reverse(Acc);
+create_pdec_inc_command(ModName,{Comps1,Comps2},TNL,Acc) 
+  when list(Comps1),list(Comps2) ->
+    create_pdec_inc_command(ModName,Comps1 ++ Comps2,TNL,Acc);
+create_pdec_inc_command(ModN,Clist,[CL|_Rest],Acc) when list(CL) ->
+    create_pdec_inc_command(ModN,Clist,CL,Acc);
+create_pdec_inc_command(ModName,
+			CList=[#'ComponentType'{name=Name,typespec=TS,
+						prop=Prop}|Comps],
+			TNL=[C1|Cs],Acc)  ->
+    case C1 of
+% 	Name ->
+% 	    %% In this case C1 is an atom
+% 	    TagCommand = get_tag_command(TS,?MANDATORY,Prop),
+% 	    create_pdec_inc_command(ModName,get_components(TS#type.def),Cs,[TagCommand|Acc]);
+	{Name,undecoded} ->
+	    TagCommand = get_tag_command(TS,?UNDECODED,Prop),
+	    create_pdec_inc_command(ModName,Comps,Cs,[TagCommand|Acc]);
+	{Name,parts} ->
+	    TagCommand = get_tag_command(TS,?PARTS,Prop),
+	    create_pdec_inc_command(ModName,Comps,Cs,[TagCommand|Acc]);
+	L when list(L) ->
+	    %% This case is only possible as the first element after
+	    %% the top type element, when top type is SEGUENCE or SET.
+	    %% Follow each element in L. Must note every tag on the
+	    %% way until the last command is reached, but it ought to
+	    %% be enough to have a "complete" or "complete optional"
+	    %% command for each component that is not specified in the
+	    %% config file. Then in the TLV decode the components with
+	    %% a "complete" command will be decoded by an ordinary TLV
+	    %% decode.
+	    create_pdec_inc_command(ModName,CList,L,Acc);
+	{Name,RestPartsList} when list(RestPartsList) ->
+	    %% Same as previous, but this may occur at any place in
+	    %% the structure. The previous is only possible as the
+	    %% second element.
+	    case get_tag_command(TS,?MANDATORY,Prop) of
+		?MANDATORY ->
+		    InnerDirectives=
+			create_pdec_inc_command(ModName,TS#type.def,
+						RestPartsList,[]),
+		    create_pdec_inc_command(ModName,Comps,Cs,
+					    [[?MANDATORY,InnerDirectives]|Acc]);
+%		    create_pdec_inc_command(ModName,Comps,Cs,
+%					    [InnerDirectives,?MANDATORY|Acc]);
+		[Opt,EncTag] ->
+		    InnerDirectives = 
+			create_pdec_inc_command(ModName,TS#type.def,
+						RestPartsList,[]),
+		    create_pdec_inc_command(ModName,Comps,Cs,
+					    [[Opt,EncTag,InnerDirectives]|Acc])
+	    end;
+%	    create_pdec_inc_command(ModName,CList,RestPartsList,Acc);
+%%	    create_pdec_inc_command(ModName,TS#type.def,RestPartsList,Acc);
+	_ -> %% this component may not be in the config list
+	    TagCommand = get_tag_command(TS,?MANDATORY,Prop),
+	    create_pdec_inc_command(ModName,Comps,TNL,[TagCommand|Acc])
+    end;
+create_pdec_inc_command(ModName,
+			{'CHOICE',[#'ComponentType'{name=C1,
+						    typespec=TS,
+						    prop=Prop}|Comps]},
+			[{C1,Directive}|Rest],Acc) ->
+    case Directive of
+	List when list(List) ->
+	    [Command,Tag] = get_tag_command(TS,?ALTERNATIVE,Prop),
+	    CompAcc = create_pdec_inc_command(ModName,TS#type.def,List,[]),
+	    create_pdec_inc_command(ModName,{'CHOICE',Comps},Rest,
+				    [[Command,Tag,CompAcc]|Acc]);
+	undecoded ->
+	    TagCommand = get_tag_command(TS,?ALTERNATIVE_UNDECODED,Prop),
+	    create_pdec_inc_command(ModName,{'CHOICE',Comps},Rest,
+				    [TagCommand|Acc]);
+	parts ->
+	    TagCommand = get_tag_command(TS,?ALTERNATIVE_PARTS,Prop),
+	    create_pdec_inc_command(ModName,{'CHOICE',Comps},Rest,
+				    [TagCommand|Acc])
+    end;
+create_pdec_inc_command(ModName,
+			{'CHOICE',[#'ComponentType'{typespec=TS,
+						    prop=Prop}|Comps]},
+			TNL,Acc) ->
+    TagCommand = get_tag_command(TS,?ALTERNATIVE,Prop),
+    create_pdec_inc_command(ModName,{'CHOICE',Comps},TNL,[TagCommand|Acc]);
+create_pdec_inc_command(M,{'CHOICE',{Cs1,Cs2}},TNL,Acc) 
+  when list(Cs1),list(Cs2) ->
+    create_pdec_inc_command(M,{'CHOICE',Cs1 ++ Cs2},TNL,Acc);
+create_pdec_inc_command(ModName,#'Externaltypereference'{module=M,type=Name},
+			TNL,Acc) ->
+    #type{def=Def} = get_referenced_type(M,Name),
+    create_pdec_inc_command(ModName,get_components(Def),TNL,Acc);
+create_pdec_inc_command(_,_,TNL,_) ->
+    throw({error,{"unexpected error when creating partial "
+		  "decode command",TNL}}).
+
+partial_inc_dec_toptype([T|_]) when atom(T) ->
+    T;
+partial_inc_dec_toptype([{T,_}|_]) when atom(T) ->
+    T;
+partial_inc_dec_toptype([L|_]) when list(L) ->
+    partial_inc_dec_toptype(L);
+partial_inc_dec_toptype(_) ->
+    throw({error,{"no top type found for partial incomplete decode"}}).
+
+
+%% Creats a list of tags out of the information in TypeList and Types
+%% that tells which value will be decoded.  Each constructed type that
+%% is in the TypeList will get a "choosen" command. Only the last
+%% type/component in the TypeList may be a primitive type. Components
+%% "on the way" to the final element may get the "skip" or the
+%% "skip_optional" command.
+%% CommandList = [Elements]
+%% Elements = {choosen,Tag}|{skip_optional,Tag}|skip
+%% Tag is a binary with the tag BER encoded.
+create_partial_decode_gen_info(ModName,{{_,ModName},TypeList}) ->
+    case TypeList of
+	[TopType|Rest] ->
+	    case asn1_db:dbget(ModName,TopType) of
+		#typedef{typespec=TS} ->
+		    TagCommand = get_tag_command(TS,?CHOOSEN),
+		    create_pdec_command(ModName,get_components(TS#type.def),
+					Rest,[TagCommand]);
+		_ ->
+		    throw({error,{"wrong type list in asn1 config file",
+				  TypeList}})
+	    end;
+	_ ->
+	    []
+    end;
+create_partial_decode_gen_info(_,[]) ->
+    [];
+create_partial_decode_gen_info(_M1,{{_,M2},_}) ->
+    throw({error,{"wrong module name in asn1 config file",
+				  M2}}).
+
+%% create_pdec_command/4 for each name (type or component) in the
+%% third argument, TypeNameList, a command is created. The command has
+%% information whether the component/type shall be skipped, looked
+%% into or returned. The list of commands is returned.
+create_pdec_command(_ModName,_,[],Acc) ->
+    lists:reverse(Acc);
+create_pdec_command(ModName,[#'ComponentType'{name=C1,typespec=TS}|_Comps],
+		    [C1|Cs],Acc) ->
+    %% this component is a constructed type or the last in the
+    %% TypeNameList otherwise the config spec is wrong
+    TagCommand = get_tag_command(TS,?CHOOSEN),
+    create_pdec_command(ModName,get_components(TS#type.def),
+			Cs,[TagCommand|Acc]);
+create_pdec_command(ModName,[#'ComponentType'{typespec=TS,
+					      prop=Prop}|Comps],
+		    [C2|Cs],Acc) ->
+    TagCommand = 
+	case Prop of
+	    mandatory ->
+		get_tag_command(TS,?SKIP);
+	    _ ->
+		get_tag_command(TS,?SKIP_OPTIONAL)
+	end,
+    create_pdec_command(ModName,Comps,[C2|Cs],[TagCommand|Acc]);
+create_pdec_command(ModName,{'CHOICE',[Comp=#'ComponentType'{name=C1}|_]},TNL=[C1|_Cs],Acc) ->
+    create_pdec_command(ModName,[Comp],TNL,Acc);
+create_pdec_command(ModName,{'CHOICE',[#'ComponentType'{}|Comps]},TNL,Acc) ->
+    create_pdec_command(ModName,{'CHOICE',Comps},TNL,Acc);
+create_pdec_command(ModName,#'Externaltypereference'{module=M,type=C1},
+		    TypeNameList,Acc) ->
+    case get_referenced_type(M,C1) of
+	#type{def=Def} ->
+	    create_pdec_command(ModName,get_components(Def),TypeNameList,
+				Acc);
+	Err ->
+	    throw({error,{"unexpected result when fetching "
+			  "referenced element",Err}})
+    end;
+create_pdec_command(ModName,TS=#type{def=Def},[C1|Cs],Acc) ->
+    %% This case when we got the "components" of a SEQUENCE/SET OF
+    case C1 of
+	[1] ->
+	    %% A list with an integer is the only valid option in a 'S
+	    %% OF', the other valid option would be an empty
+	    %% TypeNameList saying that the entire 'S OF' will be
+	    %% decoded.
+	    TagCommand = get_tag_command(TS,?CHOOSEN),
+	    create_pdec_command(ModName,Def,Cs,[TagCommand|Acc]);
+	[N] when integer(N) ->
+	    TagCommand = get_tag_command(TS,?SKIP),
+	    create_pdec_command(ModName,Def,[[N-1]|Cs],[TagCommand|Acc]);
+	Err ->
+	    throw({error,{"unexpected error when creating partial "
+			  "decode command",Err}})
+    end;
+create_pdec_command(_,_,TNL,_) ->
+    throw({error,{"unexpected error when creating partial "
+		  "decode command",TNL}}).
+	    
+% get_components({'CHOICE',Components}) ->
+%     Components;
+get_components(#'SEQUENCE'{components=Components}) ->
+    Components;
+get_components(#'SET'{components=Components}) ->
+    Components;
+get_components({'SEQUENCE OF',Components}) ->
+    Components;
+get_components({'SET OF',Components}) ->
+    Components;
+get_components(Def) ->
+    Def.
+			   
+%% get_tag_command(Type,Command)
+
+%% Type is the type that has information about the tag Command tells
+%% what to do with the encoded value with the tag of Type when
+%% decoding. 
+get_tag_command(#type{tag=[]},_) ->
+    [];
+get_tag_command(#type{tag=[_Tag]},?SKIP) ->
+    ?SKIP;
+get_tag_command(#type{tag=[Tag]},Command) ->
+    %% encode the tag according to BER
+    [Command,encode_tag_val(decode_class(Tag#tag.class),Tag#tag.form, 
+			    Tag#tag.number)];
+get_tag_command(T=#type{tag=[Tag|Tags]},Command) ->
+    [get_tag_command(T#type{tag=Tag},Command)|
+     get_tag_command(T#type{tag=Tags},Command)].
+
+%% get_tag_command/3 used by create_pdec_inc_command
+get_tag_command(#type{tag=[]},_,_) ->
+    [];
+get_tag_command(#type{tag=[Tag]},?MANDATORY,Prop) ->
+    case Prop of
+	mandatory ->
+	    ?MANDATORY;
+	{'DEFAULT',_} ->
+	    [?DEFAULT,encode_tag_val(decode_class(Tag#tag.class),
+				     Tag#tag.form,Tag#tag.number)];
+	_ -> [?OPTIONAL,encode_tag_val(decode_class(Tag#tag.class),
+				       Tag#tag.form,Tag#tag.number)]
+    end;
+get_tag_command(#type{tag=[Tag]},Command,_) ->
+    [Command,encode_tag_val(decode_class(Tag#tag.class),Tag#tag.form, 
+			    Tag#tag.number)].
+
+
+get_referenced_type(M,Name) ->
+    case asn1_db:dbget(M,Name) of
+	#typedef{typespec=TS} ->
+	    case TS of
+		#type{def=#'Externaltypereference'{module=M2,type=Name2}} ->
+		    %% The tags have already been taken care of in the
+		    %% first reference where they were gathered in a
+		    %% list of tags.
+		    get_referenced_type(M2,Name2);
+		#type{} -> TS;
+		_  ->
+		    throw({error,{"unexpected element when"
+				  " fetching referenced type",TS}})
+	    end;
+	T ->
+	    throw({error,{"unexpected element when fetching "
+			  "referenced type",T}})
+    end.
+
+tag_format(EncRule,_Options,CommandList) ->
+    case EncRule of
+	ber_bin_v2 ->
+	    tlv_tags(CommandList);
+	_ ->
+	    CommandList
+    end.
+
+tlv_tags([]) ->
+    [];
+tlv_tags([mandatory|Rest]) ->
+    [mandatory|tlv_tags(Rest)];
+tlv_tags([[Command,Tag]|Rest]) when atom(Command),binary(Tag) ->
+    [[Command,tlv_tag(Tag)]|tlv_tags(Rest)];
+tlv_tags([[Command,Directives]|Rest]) when atom(Command),list(Directives) ->
+    [[Command,tlv_tags(Directives)]|tlv_tags(Rest)];
+%% remove all empty lists
+tlv_tags([[]|Rest]) ->
+    tlv_tags(Rest);
+tlv_tags([{Name,TopType,L1}|Rest]) when list(L1),atom(TopType) ->
+    [{Name,TopType,tlv_tags(L1)}|tlv_tags(Rest)];
+tlv_tags([[Command,Tag,L1]|Rest]) when list(L1),binary(Tag) ->
+    [[Command,tlv_tag(Tag),tlv_tags(L1)]|tlv_tags(Rest)];
+tlv_tags([L=[L1|_]|Rest]) when list(L1) ->
+    [tlv_tags(L)|tlv_tags(Rest)].
+
+tlv_tag(<<Cl:2,_:1,TagNo:5>>) when TagNo < 31 ->
+    (Cl bsl 16) + TagNo;
+tlv_tag(<<Cl:2,_:1,31:5,0:1,TagNo:7>>) ->
+    (Cl bsl 16) + TagNo;
+tlv_tag(<<Cl:2,_:1,31:5,Buffer/binary>>) ->
+    TagNo = tlv_tag1(Buffer,0),
+    (Cl bsl 16) + TagNo.
+tlv_tag1(<<0:1,PartialTag:7>>,Acc) ->
+    (Acc bsl 7) bor PartialTag;
+tlv_tag1(<<1:1,PartialTag:7,Buffer/binary>>,Acc) ->
+    tlv_tag1(Buffer,(Acc bsl 7) bor PartialTag).
+    
+%% reads the content from the configuration file and returns the
+%% selected part choosen by InfoType. Assumes that the config file
+%% content is an Erlang term.
+read_config_file(ModuleName,InfoType) when atom(InfoType) ->
+    CfgList = read_config_file(ModuleName),
+    get_config_info(CfgList,InfoType).
+
+
+read_config_file(ModuleName) ->
+    case file:consult(lists:concat([ModuleName,'.asn1config'])) of
+%    case file:consult(ModuleName) of
+	{ok,CfgList} ->
+	    CfgList;
+	{error,enoent} ->
+	    Options = get(encoding_options),
+	    Includes = [I || {i,I} <- Options],
+	    read_config_file1(ModuleName,Includes);
+	{error,Reason} ->
+	    file:format_error(Reason),
+	    throw({error,{"error reading asn1 config file",Reason}})
+    end.
+read_config_file1(ModuleName,[]) ->
+    case filename:extension(ModuleName) of
+	".asn1config" ->
+	    throw({error,enoent});
+	_ ->
+	    read_config_file(lists:concat([ModuleName,".asn1config"]))
+    end;
+read_config_file1(ModuleName,[H|T]) ->
+%    File = filename:join([H,lists:concat([ModuleName,'.asn1config'])]),
+    File = filename:join([H,ModuleName]),
+    case file:consult(File) of
+	{ok,CfgList} ->
+	    CfgList;
+	{error,enoent} ->
+	    read_config_file1(ModuleName,T);
+	{error,Reason} ->
+	    file:format_error(Reason),
+	    throw({error,{"error reading asn1 config file",Reason}})
+    end.
+    
+get_config_info(CfgList,InfoType) ->
+    case InfoType of
+	all ->
+	    CfgList;
+	_ ->
+	    case lists:keysearch(InfoType,1,CfgList) of
+		{value,{InfoType,Value}} ->
+		    Value;
+		false ->
+		    []
+	    end
+    end.
+
+%% save_config/2 saves the Info with the key Key
+%% Before saving anything check if a table exists
+save_config(Key,Info) ->
+    create_if_no_table(asn1_general,[named_table]),
+    ets:insert(asn1_general,{{asn1_config,Key},Info}).
+
+read_config_data(Key) ->
+    case ets:info(asn1_general) of
+	undefined -> undefined;
+	_ ->
+	    case ets:lookup(asn1_general,{asn1_config,Key}) of
+		[{_,Data}] -> Data;
+		Err -> 
+		    io:format("strange data from config file ~w~n",[Err]),
+		    Err
+	    end
+    end.
+
+
+%%
+%% Functions to manipulate the gen_state record saved in the
+%% asn1_general ets table.
+%%
+
+%% saves input data in a new gen_state record
+save_gen_state({_,ConfList},PartIncTlvTagList) ->
+    %ConfList=[{FunctionName,PatternList}|Rest]
+    StateRec = #gen_state{inc_tag_pattern=PartIncTlvTagList,
+			  inc_type_pattern=ConfList},
+    save_config(gen_state,StateRec);
+save_gen_state(_,_) ->
+%%    ok.
+    save_config(gen_state,#gen_state{}).
+
+save_gen_state(GenState) when record(GenState,gen_state) ->
+    save_config(gen_state,GenState).
+
+
+%% get_gen_state_field returns undefined if no gen_state exists or if
+%% Field is undefined or the data at the field.
+get_gen_state_field(Field) ->
+    case read_config_data(gen_state) of
+	undefined ->
+	    undefined;
+	GenState -> 
+	    get_gen_state_field(GenState,Field)
+    end.
+get_gen_state_field(#gen_state{active=Active},active) ->
+    Active;
+get_gen_state_field(_,active) ->
+    false;
+get_gen_state_field(GS,prefix) ->
+    GS#gen_state.prefix;
+get_gen_state_field(GS,inc_tag_pattern) ->
+    GS#gen_state.inc_tag_pattern;
+get_gen_state_field(GS,tag_pattern) ->
+    GS#gen_state.tag_pattern;
+get_gen_state_field(GS,inc_type_pattern) ->
+    GS#gen_state.inc_type_pattern;
+get_gen_state_field(GS,type_pattern) ->
+    GS#gen_state.type_pattern;
+get_gen_state_field(GS,func_name) ->
+    GS#gen_state.func_name;
+get_gen_state_field(GS,namelist) ->
+    GS#gen_state.namelist;
+get_gen_state_field(GS,tobe_refed_funcs) ->
+    GS#gen_state.tobe_refed_funcs;
+get_gen_state_field(GS,gen_refed_funcs) ->
+    GS#gen_state.gen_refed_funcs.
+    
+
+get_gen_state() ->
+    read_config_data(gen_state).
+
+
+update_gen_state(Field,Data) ->
+    case get_gen_state() of
+	State when record(State,gen_state) ->
+	    update_gen_state(Field,State,Data);
+	_ ->
+	    exit({error,{asn1,{internal,
+			       "tried to update nonexistent gen_state",Field,Data}}})
+    end.
+update_gen_state(active,State,Data) ->
+    save_gen_state(State#gen_state{active=Data});
+update_gen_state(prefix,State,Data) ->
+    save_gen_state(State#gen_state{prefix=Data});
+update_gen_state(inc_tag_pattern,State,Data) ->
+    save_gen_state(State#gen_state{inc_tag_pattern=Data});
+update_gen_state(tag_pattern,State,Data) ->
+    save_gen_state(State#gen_state{tag_pattern=Data});
+update_gen_state(inc_type_pattern,State,Data) ->
+    save_gen_state(State#gen_state{inc_type_pattern=Data});
+update_gen_state(type_pattern,State,Data) ->
+    save_gen_state(State#gen_state{type_pattern=Data});
+update_gen_state(func_name,State,Data) ->
+    save_gen_state(State#gen_state{func_name=Data});
+update_gen_state(namelist,State,Data) ->
+%     SData =
+% 	case Data of
+% 	    [D] when list(D) -> D;
+% 	    _ -> Data
+% 	end,
+    save_gen_state(State#gen_state{namelist=Data});
+update_gen_state(tobe_refed_funcs,State,Data) ->
+    save_gen_state(State#gen_state{tobe_refed_funcs=Data});
+update_gen_state(gen_refed_funcs,State,Data) ->
+    save_gen_state(State#gen_state{gen_refed_funcs=Data}).
+
+update_namelist(Name) ->
+    case get_gen_state_field(namelist) of
+	[Name,Rest] -> update_gen_state(namelist,Rest);
+	[Name|Rest] -> update_gen_state(namelist,Rest);
+	[{Name,List}] when list(List) -> update_gen_state(namelist,List);
+	[{Name,Atom}|Rest] when atom(Atom) -> update_gen_state(namelist,Rest);
+	Other -> Other
+    end.
+
+pop_namelist() ->
+    DeepTail = %% removes next element in order
+	fun([[{_,A}]|T],_Fun) when atom(A) -> T;
+	   ([{_N,L}|T],_Fun) when list(L) -> [L|T];
+	   ([[]|T],Fun) -> Fun(T,Fun);
+	   ([L1|L2],Fun) when list(L1) ->
+		case lists:flatten(L1) of
+		    [] -> Fun([L2],Fun);
+		    _ -> [Fun(L1,Fun)|L2]
+		end;
+	   ([_H|T],_Fun) -> T
+	end,
+    {Pop,NewNL} =
+	case get_gen_state_field(namelist) of
+	    [] -> {[],[]};
+	    L ->
+		{next_namelist_el(L),
+		 DeepTail(L,DeepTail)}
+	end,
+    update_gen_state(namelist,NewNL),
+    Pop.
+
+%% next_namelist_el fetches the next type/component name in turn in
+%% the namelist, without changing the namelist.
+next_namelist_el() ->
+    case get_gen_state_field(namelist) of
+	undefined -> undefined;
+	L when list(L) -> next_namelist_el(L)
+    end.
+
+next_namelist_el([]) ->
+    [];
+next_namelist_el([L]) when list(L) ->
+    next_namelist_el(L);
+next_namelist_el([H|_]) when atom(H) ->
+    H;
+next_namelist_el([L|T]) when list(L) ->
+    case next_namelist_el(L) of
+	[] ->
+	    next_namelist_el([T]);
+	R ->
+	    R
+    end;
+next_namelist_el([H={_,A}|_]) when atom(A) ->
+    H.
+
+%% removes a bracket from the namelist
+step_in_constructed() ->
+    case get_gen_state_field(namelist) of
+	[L] when list(L) ->
+	    update_gen_state(namelist,L);
+	_ -> ok
+    end.
+			
+is_function_generated(Name) ->
+    case get_gen_state_field(gen_refed_funcs) of
+	L when list(L) ->
+	    lists:member(Name,L);
+	_ ->
+	    false
+    end.
+			       
+get_tobe_refed_func(Name) ->
+    case get_gen_state_field(tobe_refed_funcs) of
+	L when list(L) ->
+	    case lists:keysearch(Name,1,L) of
+		{_,Element} ->
+		    Element;
+		_ ->
+		    undefined
+	    end;
+	_ ->
+	    undefined
+    end.
+
+add_tobe_refed_func(Data) ->
+    L = get_gen_state_field(tobe_refed_funcs),
+    update_gen_state(tobe_refed_funcs,[Data|L]).
+
+%% moves Name from the to be list to the generated list.
+generated_refed_func(Name) ->
+    L = get_gen_state_field(tobe_refed_funcs),
+    NewL = lists:keydelete(Name,1,L),
+    update_gen_state(tobe_refed_funcs,NewL),
+    L2 = get_gen_state_field(gen_refed_funcs),
+    update_gen_state(gen_refed_funcs,[Name|L2]).
+
+add_generated_refed_func(Data) ->
+    L = get_gen_state_field(gen_refed_funcs),
+    update_gen_state(gen_refed_funcs,[Data|L]).
+
+
+next_refed_func() ->
+    case get_gen_state_field(tobe_refed_funcs) of
+	[] ->
+	    [];
+	[H|T] ->
+	    update_gen_state(tobe_refed_funcs,T),
+	    H
+    end.
+
+reset_gen_state() ->
+    save_gen_state(#gen_state{}).