%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2013. 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(asn1ct_gen_per).
%% Generate erlang module which handles (PER) encode and decode for
%% all types in an ASN.1 module
-include("asn1_records.hrl").
%-compile(export_all).
-export([gen_dec_imm/2]).
-export([gen_dec_prim/3,gen_encode_prim/4]).
-export([gen_obj_code/3,gen_objectset_code/2]).
-export([gen_decode/2, gen_decode/3]).
-export([gen_encode/2, gen_encode/3]).
-export([extaddgroup2sequence/1]).
-import(asn1ct_gen, [emit/1,demit/1]).
-import(asn1ct_func, [call/3]).
%% Generate ENCODING ******************************
%%****************************************x
gen_encode(Erules,Type) when is_record(Type,typedef) ->
gen_encode_user(Erules,Type).
%% case Type#typedef.typespec of
%% Def when is_record(Def,type) ->
%% gen_encode_user(Erules,Type);
%% Def when is_tuple(Def),(element(1,Def) == 'Object') ->
%% gen_encode_object(Erules,Type);
%% Other ->
%% exit({error,{asn1,{unknown,Other}}})
%% end.
gen_encode(Erules,Typename,#'ComponentType'{name=Cname,typespec=Type}) ->
NewTypename = [Cname|Typename],
gen_encode(Erules,NewTypename,Type);
gen_encode(Erules,Typename,Type) when is_record(Type,type) ->
InnerType = asn1ct_gen:get_inner(Type#type.def),
ObjFun =
case lists:keysearch(objfun,1,Type#type.tablecinf) of
{value,{_,_Name}} ->
%% lists:concat([", ObjFun",Name]);
", ObjFun";
false ->
""
end,
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
emit({"'enc_",asn1ct_gen:list2name(Typename),"'(Val",ObjFun,
") ->",nl}),
asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,Type);
_ ->
true
end.
gen_encode_user(Erules,D) when is_record(D,typedef) ->
CurrMod = get(currmod),
Typename = [D#typedef.name],
Def = D#typedef.typespec,
InnerType = asn1ct_gen:get_inner(Def#type.def),
emit({"'enc_",asn1ct_gen:list2name(Typename),"'(Val) ->",nl}),
case asn1ct_gen:type(InnerType) of
{primitive,bif} ->
gen_encode_prim(Erules,Def,"false"),
emit({".",nl});
'ASN1_OPEN_TYPE' ->
gen_encode_prim(Erules,Def#type{def='ASN1_OPEN_TYPE'},"false"),
emit({".",nl});
{constructed,bif} ->
asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,D);
#'Externaltypereference'{module=CurrMod,type=Etype} ->
emit({"'enc_",Etype,"'(Val).",nl,nl});
#'Externaltypereference'{module=Emod,type=Etype} ->
emit({"'",Emod,"':'enc_",Etype,"'(Val).",nl,nl});
{notype,_} ->
emit({"'enc_",InnerType,"'(Val).",nl,nl})
end.
gen_encode_prim(Erules,D,DoTag) ->
Value = asn1ct_gen:mk_var(asn1ct_name:curr(val)),
gen_encode_prim(Erules,D,DoTag,Value).
gen_encode_prim(Erules, #type{def={'ENUMERATED',{N1,N2}}}, _, Value) ->
NewList = [{0,X} || {X,_} <- N1] ++ ['EXT_MARK'] ++
[{1,X} || {X,_} <- N2],
NewC = {0,length(N1)-1},
emit(["case ",Value," of",nl]),
emit_enc_enumerated_cases(Erules, NewC, NewList, 0);
gen_encode_prim(Erules, #type{def={'ENUMERATED',NNL}}, _, Value) ->
NewList = [X || {X,_} <- NNL],
NewC = {0,length(NewList)-1},
emit(["case ",Value," of",nl]),
emit_enc_enumerated_cases(Erules, NewC, NewList, 0);
gen_encode_prim(per=Erules, D, DoTag, Value) ->
asn1ct_gen_per_rt2ct:gen_encode_prim(Erules, D, DoTag, Value);
gen_encode_prim(Erules,D,DoTag,Value) when is_record(D,type) ->
Constraint = D#type.constraint,
SizeConstr = asn1ct_imm:effective_constraint(bitstring, Constraint),
Pa = case lists:keyfind('PermittedAlphabet', 1, Constraint) of
false -> no;
{_,Pa0} -> Pa0
end,
asn1ct_name:new(enumval),
case D#type.def of
'INTEGER' ->
Args = [{asis,asn1ct_imm:effective_constraint(integer,Constraint)},
Value],
call(Erules, encode_integer, Args);
{'INTEGER',NamedNumberList} ->
Args = [{asis,asn1ct_imm:effective_constraint(integer,Constraint)},
Value,{asis,NamedNumberList}],
call(Erules, encode_integer, Args);
'REAL' ->
emit_enc_real(Erules, Value);
{'BIT STRING',NamedNumberList} ->
call(Erules, encode_bit_string,
[{asis,SizeConstr},Value,
{asis,NamedNumberList}]);
'NULL' ->
emit("[]");
'OBJECT IDENTIFIER' ->
call(Erules, encode_object_identifier, [Value]);
'RELATIVE-OID' ->
call(Erules, encode_relative_oid, [Value]);
'ObjectDescriptor' ->
call(Erules, encode_ObjectDescriptor,
[{asis,Constraint},Value]);
'BOOLEAN' ->
call(Erules, encode_boolean, [Value]);
'OCTET STRING' ->
case SizeConstr of
0 ->
emit("[]");
no ->
call(Erules, encode_octet_string, [Value]);
C ->
call(Erules, encode_octet_string, [{asis,C},Value])
end;
'NumericString' ->
call(Erules, encode_NumericString, [{asis,SizeConstr},
{asis,Pa},Value]);
TString when TString == 'TeletexString';
TString == 'T61String' ->
call(Erules, encode_TeletexString, [{asis,Constraint},Value]);
'VideotexString' ->
call(Erules, encode_VideotexString, [{asis,Constraint},Value]);
'UTCTime' ->
call(Erules, encode_VisibleString, [{asis,SizeConstr},
{asis,Pa},Value]);
'GeneralizedTime' ->
call(Erules, encode_VisibleString, [{asis,SizeConstr},
{asis,Pa},Value]);
'GraphicString' ->
call(Erules, encode_GraphicString, [{asis,Constraint},Value]);
'VisibleString' ->
call(Erules, encode_VisibleString, [{asis,SizeConstr},
{asis,Pa},Value]);
'GeneralString' ->
call(Erules, encode_GeneralString, [{asis,Constraint},Value]);
'PrintableString' ->
call(Erules, encode_PrintableString, [{asis,SizeConstr},
{asis,Pa},Value]);
'IA5String' ->
call(Erules, encode_IA5String, [{asis,SizeConstr},
{asis,Pa},Value]);
'BMPString' ->
call(Erules, encode_BMPString, [{asis,SizeConstr},
{asis,Pa},Value]);
'UniversalString' ->
call(Erules, encode_UniversalString, [{asis,SizeConstr},
{asis,Pa},Value]);
'UTF8String' ->
call(Erules, encode_UTF8String, [Value]);
'ASN1_OPEN_TYPE' ->
NewValue = case Constraint of
[#'Externaltypereference'{type=Tname}] ->
asn1ct_func:need({Erules,complete,1}),
io_lib:format(
"complete(enc_~s(~s))",[Tname,Value]);
[#type{def=#'Externaltypereference'{type=Tname}}] ->
asn1ct_func:need({Erules,complete,1}),
io_lib:format(
"complete(enc_~s(~s))",
[Tname,Value]);
_ -> Value
end,
call(Erules, encode_open_type, [NewValue]);
#'ObjectClassFieldType'{} ->
case asn1ct_gen:get_inner(D#type.def) of
{fixedtypevaluefield,_,InnerType} ->
gen_encode_prim(Erules,InnerType,DoTag,Value);
T -> %% 'ASN1_OPEN_TYPE'
gen_encode_prim(Erules,D#type{def=T},DoTag,Value)
end;
XX ->
exit({asn1_error,nyi,XX})
end.
emit_enc_real(Erules, Real) ->
asn1ct_name:new(tmpval),
asn1ct_name:new(tmplen),
emit(["begin",nl,
"{",{curr,tmpval},com,{curr,tmplen},"} = ",
{call,real_common,encode_real,[Real]},com,nl,
"[",{call,Erules,encode_length,[{curr,tmplen}]},",",
{curr,tmpval},"]",nl,
"end"]).
emit_enc_enumerated_cases(Erules, C, ['EXT_MARK'|T], _Count) ->
%% Reset enumeration counter.
emit_enc_enumerated_cases(Erules, C, T, 0);
emit_enc_enumerated_cases(Erules, C, [H|T], Count) ->
emit_enc_enumerated_case(Erules, C, H, Count),
emit([";",nl]),
emit_enc_enumerated_cases(Erules, C, T, Count+1);
emit_enc_enumerated_cases(_Erules, _, [], _Count) ->
emit(["EnumVal -> "
"exit({error,{asn1,{enumerated_not_in_range, EnumVal}}})",nl,
"end"]).
emit_enc_enumerated_case(Erules, C, {0,EnumName}, Count) ->
%% ENUMERATED with extensionmark; the value lies within then extension root
Enc = enc_ext_and_val(Erules, 0, encode_constrained_number, [C,Count]),
emit(["'",EnumName,"' -> ",{asis,Enc}]);
emit_enc_enumerated_case(Erules, _C, {1,EnumName}, Count) ->
%% ENUMERATED with extensionmark; the value is higher than extension root
Enc = enc_ext_and_val(Erules, 1, encode_small_number, [Count]),
emit(["'",EnumName,"' -> ",{asis,Enc}]);
emit_enc_enumerated_case(Erules, C, EnumName, Count) ->
%% ENUMERATED without extension
EvalMod = eval_module(Erules),
emit(["'",EnumName,"' -> ",
{asis,EvalMod:encode_constrained_number(C, Count)}]).
enc_ext_and_val(per, E, F, Args) ->
[E|apply(asn1ct_eval_per, F, Args)];
enc_ext_and_val(uper, E, F, Args) ->
<<E:1,(apply(asn1ct_eval_uper, F, Args))/bitstring>>.
%% Object code generating for encoding and decoding
%% ------------------------------------------------
gen_obj_code(Erules,_Module,Obj) when is_record(Obj,typedef) ->
ObjName = Obj#typedef.name,
Def = Obj#typedef.typespec,
#'Externaltypereference'{module=Mod,type=ClassName} =
Def#'Object'.classname,
Class = asn1_db:dbget(Mod,ClassName),
{object,_,Fields} = Def#'Object'.def,
emit({nl,nl,nl,"%%================================"}),
emit({nl,"%% ",ObjName}),
emit({nl,"%%================================",nl}),
EncConstructed =
gen_encode_objectfields(Erules, ClassName,get_class_fields(Class),
ObjName,Fields,[]),
emit(nl),
gen_encode_constr_type(Erules,EncConstructed),
emit(nl),
DecConstructed =
gen_decode_objectfields(Erules, ClassName, get_class_fields(Class),
ObjName, Fields, []),
emit(nl),
gen_decode_constr_type(Erules,DecConstructed),
emit(nl);
gen_obj_code(_,_,Obj) when is_record(Obj,pobjectdef) ->
ok.
gen_encode_objectfields(Erule, ClassName,
[{typefield,Name,OptOrMand}|Rest],
ObjName, ObjectFields, ConstrAcc) ->
EmitFuncClause =
fun(V) ->
emit(["'enc_",ObjName,"'(",{asis,Name},
",",V,",_RestPrimFieldName) ->",nl])
end,
% emit(["'enc_",ObjName,"'(",{asis,Name},
% ", Val, _RestPrimFieldName) ->",nl]),
MaybeConstr =
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} -> %% this case is illegal
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause("Val"),
case Erule of
uper ->
emit(" Val");
per ->
emit([" if",nl,
" is_list(Val) ->",nl,
" NewVal = list_to_binary(Val),",nl,
" [20,byte_size(NewVal),NewVal];",nl,
" is_binary(Val) ->",nl,
" [20,byte_size(Val),Val]",nl,
" end"])
end,
[];
{false,{'DEFAULT',DefaultType}} ->
EmitFuncClause("Val"),
gen_encode_default_call(Erule, ClassName, Name, DefaultType);
{{Name,TypeSpec},_} ->
%% A specified field owerwrites any 'DEFAULT' or
%% 'OPTIONAL' field in the class
EmitFuncClause("Val"),
gen_encode_field_call(Erule, ObjName, Name, TypeSpec)
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_encode_objectfields(Erule,ClassName,Rest,ObjName,ObjectFields,
MaybeConstr++ConstrAcc);
gen_encode_objectfields(Erule,ClassName,[{objectfield,Name,_,_,OptOrMand}|Rest],
ObjName,ObjectFields,ConstrAcc) ->
CurrentMod = get(currmod),
EmitFuncClause =
fun(Attrs) ->
emit(["'enc_",ObjName,"'(",{asis,Name},
",",Attrs,") ->",nl])
end,
% emit(["'enc_",ObjName,"'(",{asis,Name},
% ", Val,[H|T]) ->",nl]),
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} ->
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause("_,_"),
emit([" exit({error,{'use of missing field in object', ",{asis,Name},
"}})"]);
{false,{'DEFAULT',_DefaultObject}} ->
exit({error,{asn1,{"not implemented yet",Name}}});
{{Name,#'Externalvaluereference'{module=CurrentMod,
value=TypeName}},_} ->
EmitFuncClause(" Val, [H|T]"),
emit({indent(3),"'enc_",TypeName,"'(H, Val, T)"});
{{Name,#'Externalvaluereference'{module=M,value=TypeName}},_} ->
EmitFuncClause(" Val, [H|T]"),
emit({indent(3),"'",M,"':'enc_",TypeName,"'(H, Val, T)"});
{{Name,TypeSpec},_} ->
EmitFuncClause("Val,[H|T]"),
case TypeSpec#typedef.name of
{ExtMod,TypeName} ->
emit({indent(3),"'",ExtMod,"':'enc_",TypeName,
"'(H, Val, T)"});
TypeName ->
emit({indent(3),"'enc_",TypeName,"'(H, Val, T)"})
end
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_encode_objectfields(Erule,ClassName,Rest,ObjName,ObjectFields,ConstrAcc);
gen_encode_objectfields(Erule,ClassName,[_C|Cs],O,OF,Acc) ->
gen_encode_objectfields(Erule,ClassName,Cs,O,OF,Acc);
gen_encode_objectfields(_, _,[],_,_,Acc) ->
Acc.
gen_encode_constr_type(Erules,[TypeDef|Rest]) when is_record(TypeDef,typedef) ->
case is_already_generated(enc,TypeDef#typedef.name) of
true -> ok;
_ ->
%% FuncName = list_to_atom(lists:concat(["enc_",TypeDef#typedef.name])),
FuncName = asn1ct_gen:list2rname(TypeDef#typedef.name ++ [enc]),
emit(["'",FuncName,"'(Val) ->",nl]),
Def = TypeDef#typedef.typespec,
InnerType = asn1ct_gen:get_inner(Def#type.def),
asn1ct_gen:gen_encode_constructed(Erules,TypeDef#typedef.name,
InnerType,Def),
gen_encode_constr_type(Erules,Rest)
end;
gen_encode_constr_type(_,[]) ->
ok.
gen_encode_field_call(_Erules, _ObjName, _FieldName,
#'Externaltypereference'{module=M,type=T}) ->
CurrentMod = get(currmod),
if
M == CurrentMod ->
emit({" 'enc_",T,"'(Val)"}),
[];
true ->
emit({" '",M,"':'enc_",T,"'(Val)"}),
[]
end;
gen_encode_field_call(Erules, ObjName, FieldName, Type) ->
Def = Type#typedef.typespec,
case Type#typedef.name of
{primitive,bif} ->
gen_encode_prim(Erules, Def, "false", "Val"),
[];
{constructed,bif} ->
emit({" 'enc_",ObjName,'_',FieldName,
"'(Val)"}),
%% [Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}];
[Type#typedef{name=[FieldName,ObjName]}];
{ExtMod,TypeName} ->
emit({" '",ExtMod,"':'enc_",TypeName,
"'(Val)"}),
[];
TypeName ->
emit({" 'enc_",TypeName,"'(Val)"}),
[]
end.
gen_encode_default_call(Erules, ClassName, FieldName, Type) ->
CurrentMod = get(currmod),
InnerType = asn1ct_gen:get_inner(Type#type.def),
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
%% asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,Type);
emit([" 'enc_",ClassName,'_',FieldName,"'(Val)"]),
%% [#typedef{name=list_to_atom(lists:concat([ClassName,'_',FieldName])),
[#typedef{name=[FieldName,ClassName],
typespec=Type}];
{primitive,bif} ->
gen_encode_prim(Erules, Type, "false", "Val"),
[];
#'Externaltypereference'{module=CurrentMod,type=Etype} ->
emit([" 'enc_",Etype,"'(Val)",nl]),
[];
#'Externaltypereference'{module=Emod,type=Etype} ->
emit([" '",Emod,"':'enc_",Etype,"'(Val)",nl]),
[]
end.
gen_decode_objectfields(Erules, ClassName,
[{typefield,Name,OptOrMand}|Rest],
ObjName, ObjectFields, ConstrAcc) ->
EmitFuncClause =
fun(Bytes) ->
emit(["'dec_",ObjName,"'(",{asis,Name},",",Bytes,
",_,_RestPrimFieldName) ->",nl])
end,
MaybeConstr=
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} -> %% this case is illegal
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause("Bytes"),
emit([" {Bytes,[]}"]),
[];
{false,{'DEFAULT',DefaultType}} ->
EmitFuncClause("Bytes"),
gen_decode_default_call(Erules, ClassName, Name, "Bytes",
DefaultType);
{{Name,TypeSpec},_} ->
%% A specified field owerwrites any 'DEFAULT' or
%% 'OPTIONAL' field in the class
EmitFuncClause("Bytes"),
gen_decode_field_call(Erules, ObjName, Name, "Bytes", TypeSpec)
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_decode_objectfields(Erules, ClassName, Rest, ObjName,
ObjectFields, MaybeConstr++ConstrAcc);
gen_decode_objectfields(Erules, ClassName,
[{objectfield,Name,_,_,OptOrMand}|Rest],
ObjName, ObjectFields, ConstrAcc) ->
CurrentMod = get(currmod),
EmitFuncClause =
fun(Attrs) ->
emit(["'dec_",ObjName,"'(",{asis,Name},
",",Attrs,") ->",nl])
end,
% emit(["'dec_",ObjName,"'(",{asis,Name},
% ", Bytes,_,[H|T]) ->",nl]),
case {get_object_field(Name,ObjectFields),OptOrMand} of
{false,'MANDATORY'} ->
exit({error,{asn1,{"missing mandatory field in object",
ObjName}}});
{false,'OPTIONAL'} ->
EmitFuncClause("_,_,_"),
emit([" exit({error,{'illegal use of missing field in object', ",{asis,Name},
"}})"]);
{false,{'DEFAULT',_DefaultObject}} ->
exit({error,{asn1,{"not implemented yet",Name}}});
{{Name,#'Externalvaluereference'{module=CurrentMod,
value=TypeName}},_} ->
EmitFuncClause("Bytes,_,[H|T]"),
emit({indent(3),"'dec_",TypeName,"'(H, Bytes, telltype, T)"});
{{Name,#'Externalvaluereference'{module=M,value=TypeName}},_} ->
EmitFuncClause("Bytes,_,[H|T]"),
emit({indent(3),"'",M,"':'dec_",TypeName,
"'(H, Bytes, telltype, T)"});
{{Name,TypeSpec},_} ->
EmitFuncClause("Bytes,_,[H|T]"),
case TypeSpec#typedef.name of
{ExtMod,TypeName} ->
emit({indent(3),"'",ExtMod,"':'dec_",TypeName,
"'(H, Bytes, telltype, T)"});
TypeName ->
emit({indent(3),"'dec_",TypeName,"'(H, Bytes, telltype, T)"})
end
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_decode_objectfields(Erules, ClassName, Rest, ObjName,
ObjectFields, ConstrAcc);
gen_decode_objectfields(Erules, CN, [_C|Cs], O, OF, CAcc) ->
gen_decode_objectfields(Erules, CN, Cs, O, OF, CAcc);
gen_decode_objectfields(_, _, [], _, _, CAcc) ->
CAcc.
gen_decode_field_call(_Erules, _ObjName, _FieldName, Bytes,
#'Externaltypereference'{module=M,type=T}) ->
CurrentMod = get(currmod),
if
M == CurrentMod ->
emit([" 'dec_",T,"'(",Bytes,", telltype)"]),
[];
true ->
emit([" '",M,"':'dec_",T,"'(",Bytes,", telltype)"]),
[]
end;
gen_decode_field_call(Erules, ObjName, FieldName, Bytes, Type) ->
Def = Type#typedef.typespec,
case Type#typedef.name of
{primitive,bif} ->
gen_dec_prim(Erules, Def, Bytes),
[];
{constructed,bif} ->
emit({" 'dec_",ObjName,'_',FieldName,
"'(",Bytes,",telltype)"}),
%% [Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}];
[Type#typedef{name=[FieldName,ObjName]}];
{ExtMod,TypeName} ->
emit({" '",ExtMod,"':'dec_",TypeName,
"'(",Bytes,", telltype)"}),
[];
TypeName ->
emit({" 'dec_",TypeName,"'(",Bytes,", telltype)"}),
[]
end.
gen_decode_default_call(Erules, ClassName, FieldName, Bytes, Type) ->
CurrentMod = get(currmod),
InnerType = asn1ct_gen:get_inner(Type#type.def),
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
emit([" 'dec_",ClassName,'_',FieldName,"'(",Bytes,", telltype)"]),
%% [#typedef{name=list_to_atom(lists:concat([ClassName,'_',FieldName])),
[#typedef{name=[FieldName,ClassName],
typespec=Type}];
{primitive,bif} ->
gen_dec_prim(Erules, Type, Bytes),
[];
#'Externaltypereference'{module=CurrentMod,type=Etype} ->
emit([" 'dec_",Etype,"'(",Bytes,", telltype)",nl]),
[];
#'Externaltypereference'{module=Emod,type=Etype} ->
emit([" '",Emod,"':'dec_",Etype,"'(",Bytes,", telltype)",nl]),
[]
end.
gen_decode_constr_type(Erules,[TypeDef|Rest]) when is_record(TypeDef,typedef) ->
case is_already_generated(dec,TypeDef#typedef.name) of
true -> ok;
_ ->
gen_decode(Erules,TypeDef#typedef{name=asn1ct_gen:list2rname(TypeDef#typedef.name)})
end,
gen_decode_constr_type(Erules,Rest);
gen_decode_constr_type(_,[]) ->
ok.
more_genfields([]) ->
false;
more_genfields([Field|Fields]) ->
case element(1,Field) of
typefield ->
true;
objectfield ->
true;
_ ->
more_genfields(Fields)
end.
%% Object Set code generating for encoding and decoding
%% ----------------------------------------------------
gen_objectset_code(Erules,ObjSet) ->
ObjSetName = ObjSet#typedef.name,
Def = ObjSet#typedef.typespec,
%% {ClassName,ClassDef} = Def#'ObjectSet'.class,
#'Externaltypereference'{module=ClassModule,
type=ClassName} = Def#'ObjectSet'.class,
ClassDef = asn1_db:dbget(ClassModule,ClassName),
UniqueFName = Def#'ObjectSet'.uniquefname,
Set = Def#'ObjectSet'.set,
emit({nl,nl,nl,"%%================================"}),
emit({nl,"%% ",ObjSetName}),
emit({nl,"%%================================",nl}),
case ClassName of
{_Module,ExtClassName} ->
gen_objset_code(Erules,ObjSetName,UniqueFName,Set,
ExtClassName,ClassDef);
_ ->
gen_objset_code(Erules,ObjSetName,UniqueFName,Set,
ClassName,ClassDef)
end,
emit(nl).
gen_objset_code(Erules,ObjSetName,UniqueFName,Set,ClassName,ClassDef)->
ClassFields = (ClassDef#classdef.typespec)#objectclass.fields,
InternalFuncs=
gen_objset_enc(Erules,ObjSetName,UniqueFName,Set,ClassName,ClassFields,1,[]),
gen_objset_dec(Erules, ObjSetName,UniqueFName,Set,ClassName,ClassFields,1),
gen_internal_funcs(Erules,InternalFuncs).
%% gen_objset_enc iterates over the objects of the object set
gen_objset_enc(_,_,{unique,undefined},_,_,_,_,_) ->
%% There is no unique field in the class of this object set
%% don't bother about the constraint
[];
gen_objset_enc(Erule, ObjSetName, UniqueName, [{ObjName,Val,Fields}|T],
ClName, ClFields, NthObj, Acc)->
emit(["'getenc_",ObjSetName,"'(",{asis,UniqueName},",",{asis,Val},
") ->",nl]),
CurrMod = get(currmod),
{InternalFunc,NewNthObj}=
case ObjName of
{no_mod,no_name} ->
gen_inlined_enc_funs(Erule, Fields, ClFields,
ObjSetName, NthObj);
{CurrMod,Name} ->
emit({" fun 'enc_",Name,"'/3"}),
{[],0};
{ModName,Name} ->
emit_ext_encfun(ModName,Name),
{[],0};
_Other ->
emit({" fun 'enc_",ObjName,"'/3"}),
{[],0}
end,
emit({";",nl}),
gen_objset_enc(Erule, ObjSetName, UniqueName, T, ClName, ClFields,
NewNthObj, InternalFunc ++ Acc);
gen_objset_enc(uper, ObjSetName, _UniqueName, ['EXTENSIONMARK'],
_ClName, _ClFields, _NthObj, Acc) ->
emit({"'getenc_",ObjSetName,"'(_, _) ->",nl}),
emit({indent(3),"fun(_, Val, _) ->",nl}),
emit([indent(6),"Val",nl,
indent(3),"end.",nl,nl]),
Acc;
gen_objset_enc(per, ObjSetName, _UniqueName, ['EXTENSIONMARK'],
_ClName, _ClFields, _NthObj, Acc) ->
emit(["'getenc_",ObjSetName,"'(_, _) ->",nl,
indent(3),"fun(_, Val, _) ->",nl,
indent(6),"BinVal = if",nl,
indent(9),"is_list(Val) -> list_to_binary(Val);",nl,
indent(9),"true -> Val",nl,
indent(6),"end,",nl,
indent(6),"Size = byte_size(BinVal),",nl,
indent(6),"if",nl,
indent(9),"Size < 256 ->",nl,
indent(12),"[20,Size,BinVal];",nl,
indent(9),"true ->",nl,
indent(12),"[21,<<Size:16>>,Val]",nl,
indent(6),"end",nl,
indent(3),"end.",nl,nl]),
Acc;
gen_objset_enc(_, ObjSetName, UniqueName, [], _, _, _, Acc) ->
emit_default_getenc(ObjSetName, UniqueName),
emit([".",nl,nl]),
Acc.
emit_ext_encfun(ModuleName,Name) ->
emit([indent(4),"fun(T,V,O) -> '",ModuleName,"':'enc_",
Name,"'(T,V,O) end"]).
emit_default_getenc(ObjSetName,UniqueName) ->
emit(["'getenc_",ObjSetName,"'(",{asis,UniqueName},", ErrV) ->",nl]),
emit([indent(4),"fun(C,V,_) -> exit({'Type not compatible with table constraint',{component,C},{value,V},{unique_name_and_value,",{asis,UniqueName},",ErrV}}) end"]).
%% gen_inlined_enc_funs for each object iterates over all fields of a
%% class, and for each typefield it checks if the object has that
%% field and emits the proper code.
gen_inlined_enc_funs(Erule, Fields, [{typefield,_,_}|_]=T,
ObjSetName, NthObj) ->
emit([indent(3),"fun(Type, Val, _) ->",nl,
indent(6),"case Type of",nl]),
gen_inlined_enc_funs1(Erule, Fields, T, ObjSetName, [], NthObj, []);
gen_inlined_enc_funs(Erule,Fields,[_H|Rest],ObjSetName,NthObj) ->
gen_inlined_enc_funs(Erule,Fields,Rest,ObjSetName,NthObj);
gen_inlined_enc_funs(_,_,[],_,NthObj) ->
{[],NthObj}.
gen_inlined_enc_funs1(Erule, Fields, [{typefield,Name,_}|Rest], ObjSetName,
Sep0, NthObj, Acc0) ->
emit(Sep0),
Sep = [";",nl],
CurrentMod = get(currmod),
InternalDefFunName = asn1ct_gen:list2name([NthObj,Name,ObjSetName]),
{Acc,NAdd} =
case lists:keyfind(Name, 1, Fields) of
{_,#type{}=Type} ->
{Ret,N} = emit_inner_of_fun(Erule, Type, InternalDefFunName),
{Ret++Acc0,N};
{_,#typedef{}=Type} ->
emit([indent(9),{asis,Name}," ->",nl]),
{Ret,N} = emit_inner_of_fun(Erule, Type, InternalDefFunName),
{Ret++Acc0,N};
{_,#'Externaltypereference'{module=CurrentMod,type=T}} ->
emit([indent(9),{asis,Name}," ->",nl,
indent(12),"'enc_",T,"'(Val)"]),
{Acc0,0};
{_,#'Externaltypereference'{module=M,type=T}} ->
emit([indent(9),{asis,Name}," ->",nl,
indent(12),"'",M,"'",":'enc_",T,"'(Val)"]),
{Acc0,0};
false when Erule =:= uper ->
emit([indent(9),{asis,Name}," ->",nl,
indent(12),"Val",nl]),
{Acc0,0};
false when Erule =:= per ->
emit([indent(9),{asis,Name}," ->",nl,
indent(12),"Size = case Val of",nl,
indent(15),"B when is_binary(B) -> size(B);",nl,
indent(15),"_ -> length(Val)",nl,
indent(12),"end,",nl,
indent(12),"if",nl,
indent(15),"Size < 256 -> [20,Size,Val];",nl,
indent(15),"true -> [21,<<Size:16>>,Val]",nl,
indent(12),"end"]),
{Acc0,0}
end,
gen_inlined_enc_funs1(Erule, Fields, Rest, ObjSetName, Sep,
NthObj+NAdd, Acc);
gen_inlined_enc_funs1(Erule, Fields, [_|T], ObjSetName, Sep, NthObj, Acc)->
gen_inlined_enc_funs1(Erule, Fields, T, ObjSetName, Sep, NthObj, Acc);
gen_inlined_enc_funs1(_, _, [], _, _, NthObj, Acc) ->
emit([nl,indent(6),"end",nl,
indent(3),"end"]),
{Acc,NthObj}.
emit_inner_of_fun(Erule, #typedef{name={ExtMod,Name},typespec=Type}=TDef,
InternalDefFunName) ->
case {ExtMod,Name} of
{primitive,bif} ->
emit(indent(12)),
gen_encode_prim(Erule, Type, dotag, "Val"),
{[],0};
{constructed,bif} ->
emit([indent(12),"'enc_",
InternalDefFunName,"'(Val)"]),
{[TDef#typedef{name=InternalDefFunName}],1};
_ ->
emit({indent(12),"'",ExtMod,"':'enc_",Name,"'(Val)"}),
{[],0}
end;
emit_inner_of_fun(_Erule, #typedef{name=Name}, _) ->
emit({indent(12),"'enc_",Name,"'(Val)"}),
{[],0};
emit_inner_of_fun(Erule, #type{}=Type, _) ->
CurrMod = get(currmod),
case Type#type.def of
Def when is_atom(Def) ->
emit({indent(9),Def," ->",nl,indent(12)}),
gen_encode_prim(Erule, Type, dotag, "Val");
#'Externaltypereference'{module=CurrMod,type=T} ->
emit({indent(9),T," ->",nl,indent(12),"'enc_",T,"'(Val)"});
#'Externaltypereference'{module=ExtMod,type=T} ->
emit({indent(9),T," ->",nl,indent(12),ExtMod,":'enc_",
T,"'(Val)"})
end,
{[],0}.
indent(N) ->
lists:duplicate(N,32). % 32 = space
gen_objset_dec(_, _, {unique,undefined}, _, _, _, _) ->
%% There is no unique field in the class of this object set
%% don't bother about the constraint
ok;
gen_objset_dec(Erule, ObjSName, UniqueName, [{ObjName,Val,Fields}|T], ClName,
ClFields, NthObj)->
emit({"'getdec_",ObjSName,"'(",{asis,UniqueName},",",{asis,Val},
") ->",nl}),
CurrMod = get(currmod),
NewNthObj=
case ObjName of
{no_mod,no_name} ->
gen_inlined_dec_funs(Erule, Fields, ClFields,
ObjSName, NthObj);
{CurrMod,Name} ->
emit([" fun 'dec_",Name,"'/4"]),
NthObj;
{ModName,Name} ->
emit_ext_decfun(ModName,Name),
NthObj;
_Other ->
emit({" fun 'dec_",ObjName,"'/4"}),
NthObj
end,
emit({";",nl}),
gen_objset_dec(Erule, ObjSName, UniqueName, T, ClName, ClFields, NewNthObj);
gen_objset_dec(_Erule, ObjSetName, _UniqueName, ['EXTENSIONMARK'],
_ClName, _ClFields, _NthObj) ->
emit({"'getdec_",ObjSetName,"'(_, _) ->",nl}),
emit({indent(3),"fun(Attr1, Bytes, _,_) ->",nl}),
emit({indent(6),"{Bytes,Attr1}",nl}),
emit({indent(3),"end.",nl,nl}),
ok;
gen_objset_dec(_Erule, ObjSetName, UniqueName, [], _, _, _) ->
emit_default_getdec(ObjSetName, UniqueName),
emit([".",nl,nl]),
ok.
emit_ext_decfun(ModuleName,Name) ->
emit([indent(3),"fun(T,V,O1,O2) -> '",ModuleName,"':'dec_",
Name,"'(T,V,O1,O2) end"]).
emit_default_getdec(ObjSetName,UniqueName) ->
emit(["'getdec_",ObjSetName,"'(",{asis,UniqueName},", ErrV) ->",nl]),
emit([indent(2), "fun(C,V,_,_) -> exit({{component,C},{value,V},{unique_name_and_value,",{asis,UniqueName},",ErrV}}) end"]).
gen_inlined_dec_funs(Erule, Fields, List, ObjSetName, NthObj0) ->
emit([indent(3),"fun(Type, Val, _, _) ->",nl,
indent(6),"case Type of",nl]),
NthObj = gen_inlined_dec_funs1(Erule, Fields, List,
ObjSetName, "", NthObj0),
emit([nl,indent(6),"end",nl,
indent(3),"end"]),
NthObj.
gen_inlined_dec_funs1(Erule, Fields, [{typefield,Name,_}|Rest],
ObjSetName, Sep0, NthObj) ->
CurrentMod = get(currmod),
InternalDefFunName = [NthObj,Name,ObjSetName],
emit(Sep0),
Sep = [";",nl],
N = case lists:keyfind(Name, 1, Fields) of
{_,#type{}=Type} ->
emit_inner_of_decfun(Erule, Type, InternalDefFunName);
{_,#typedef{}=Type} ->
emit([indent(9),{asis,Name}," ->",nl]),
emit_inner_of_decfun(Erule, Type, InternalDefFunName);
{_,#'Externaltypereference'{module=CurrentMod,type=T}} ->
emit([indent(9),{asis,Name}," ->",nl,
indent(12),"'dec_",T,"'(Val,telltype)"]),
0;
{_,#'Externaltypereference'{module=M,type=T}} ->
emit([indent(9),{asis,Name}," ->",nl,
indent(12),"'",M,"':'dec_",T,"'(Val,telltype)"]),
0;
false ->
emit([indent(9),{asis,Name}," -> {Val,Type}"]),
0
end,
gen_inlined_dec_funs1(Erule, Fields, Rest, ObjSetName, Sep, NthObj+N);
gen_inlined_dec_funs1(Erule, Fields, [_|Rest], ObjSetName, Sep, NthObj) ->
gen_inlined_dec_funs1(Erule, Fields, Rest, ObjSetName, Sep, NthObj);
gen_inlined_dec_funs1(_, _, [], _, _, NthObj) -> NthObj.
emit_inner_of_decfun(Erule, #typedef{name={ExtName,Name},typespec=Type},
InternalDefFunName) ->
case {ExtName,Name} of
{primitive,bif} ->
emit(indent(12)),
gen_dec_prim(Erule, Type, "Val"),
0;
{constructed,bif} ->
emit({indent(12),"'dec_",
asn1ct_gen:list2name(InternalDefFunName),"'(Val)"}),
1;
_ ->
emit({indent(12),"'",ExtName,"':'dec_",Name,"'(Val, telltype)"}),
0
end;
emit_inner_of_decfun(_Erule, #typedef{name=Name}, _) ->
emit({indent(12),"'dec_",Name,"'(Val, telltype)"}),
0;
emit_inner_of_decfun(Erule, #type{}=Type, _) ->
CurrMod = get(currmod),
case Type#type.def of
Def when is_atom(Def) ->
emit({indent(9),Def," ->",nl,indent(12)}),
gen_dec_prim(Erule, Type, "Val");
#'Externaltypereference'{module=CurrMod,type=T} ->
emit({indent(9),T," ->",nl,indent(12),"'dec_",T,"'(Val)"});
#'Externaltypereference'{module=ExtMod,type=T} ->
emit({indent(9),T," ->",nl,indent(12),ExtMod,":'dec_",
T,"'(Val)"})
end,
0.
gen_internal_funcs(_,[]) ->
ok;
gen_internal_funcs(Erules,[TypeDef|Rest]) ->
gen_encode_user(Erules,TypeDef),
emit([nl,nl,"'dec_",TypeDef#typedef.name,"'(Bytes) ->",nl]),
gen_decode_user(Erules,TypeDef),
gen_internal_funcs(Erules,Rest).
%% DECODING *****************************
%%***************************************
gen_decode(Erules,Type) when is_record(Type,typedef) ->
D = Type,
emit({nl,nl}),
emit({"'dec_",Type#typedef.name,"'(Bytes,_) ->",nl}),
dbdec(Type#typedef.name),
gen_decode_user(Erules,D).
gen_decode(Erules,Tname,#'ComponentType'{name=Cname,typespec=Type}) ->
NewTname = [Cname|Tname],
gen_decode(Erules,NewTname,Type);
gen_decode(Erules,Typename,Type) when is_record(Type,type) ->
InnerType = asn1ct_gen:get_inner(Type#type.def),
case asn1ct_gen:type(InnerType) of
{constructed,bif} ->
ObjFun =
case Type#type.tablecinf of
[{objfun,_}|_R] ->
", ObjFun";
_ ->
""
end,
emit({nl,"'dec_",asn1ct_gen:list2name(Typename),
"'(Bytes,_",ObjFun,") ->",nl}),
dbdec(Typename),
asn1ct_gen:gen_decode_constructed(Erules,Typename,InnerType,Type);
_ ->
true
end.
dbdec(Type) when is_list(Type)->
demit({"io:format(\"decoding: ",asn1ct_gen:list2name(Type),"~w~n\",[Bytes]),",nl});
dbdec(Type) ->
demit({"io:format(\"decoding: ",{asis,Type},"~w~n\",[Bytes]),",nl}).
gen_decode_user(Erules,D) when is_record(D,typedef) ->
CurrMod = get(currmod),
Typename = [D#typedef.name],
Def = D#typedef.typespec,
InnerType = asn1ct_gen:get_inner(Def#type.def),
case asn1ct_gen:type(InnerType) of
{primitive,bif} ->
gen_dec_prim(Erules,Def,"Bytes"),
emit({".",nl,nl});
'ASN1_OPEN_TYPE' ->
gen_dec_prim(Erules,Def#type{def='ASN1_OPEN_TYPE'},"Bytes"),
emit({".",nl,nl});
{constructed,bif} ->
asn1ct_gen:gen_decode_constructed(Erules,Typename,InnerType,D);
#'Externaltypereference'{module=CurrMod,type=Etype} ->
emit({"'dec_",Etype,"'(Bytes,telltype).",nl,nl});
#'Externaltypereference'{module=Emod,type=Etype} ->
emit({"'",Emod,"':'dec_",Etype,"'(Bytes,telltype).",nl,nl});
Other ->
exit({error,{asn1,{unknown,Other}}})
end.
gen_dec_imm(Erule, #type{def=Name,constraint=C}) ->
Aligned = case Erule of
uper -> false;
per -> true
end,
gen_dec_imm_1(Name, C, Aligned).
gen_dec_imm_1('ASN1_OPEN_TYPE', Constraint, Aligned) ->
imm_decode_open_type(Constraint, Aligned);
gen_dec_imm_1({'BIT STRING',NNL}, Constr0, Aligned) ->
Constr = asn1ct_imm:effective_constraint(bitstring, Constr0),
Imm = asn1ct_imm:per_dec_raw_bitstring(Constr, Aligned),
case NNL of
[] ->
case asn1ct:get_bit_string_format() of
compact ->
gen_dec_bit_string(decode_compact_bit_string,
Imm);
legacy ->
gen_dec_bit_string(decode_legacy_bit_string,
Imm);
bitstring ->
gen_dec_copy_bitstring(Imm)
end;
[_|_] ->
D = fun(V, Buf) ->
As = [V,{asis,NNL}],
Call = {call,per_common,decode_named_bit_string,As},
emit(["{",Call,com,Buf,"}"])
end,
{call,D,Imm}
end;
gen_dec_imm_1('NULL', _Constr, _Aligned) ->
{value,'NULL'};
gen_dec_imm_1('BOOLEAN', _Constr, _Aligned) ->
asn1ct_imm:per_dec_boolean();
gen_dec_imm_1({'ENUMERATED',{Base,Ext}}, _Constr, Aligned) ->
asn1ct_imm:per_dec_enumerated(Base, Ext, Aligned);
gen_dec_imm_1({'ENUMERATED',NamedNumberList}, _Constr, Aligned) ->
asn1ct_imm:per_dec_enumerated(NamedNumberList, Aligned);
gen_dec_imm_1('INTEGER', Constr, Aligned) ->
asn1ct_imm:per_dec_integer(Constr, Aligned);
gen_dec_imm_1({'INTEGER',NamedNumberList}, Constraint, Aligned) ->
asn1ct_imm:per_dec_named_integer(Constraint,
NamedNumberList,
Aligned);
gen_dec_imm_1('BMPString'=Type, Constraint, Aligned) ->
gen_dec_k_m_string(Type, Constraint, Aligned);
gen_dec_imm_1('NumericString'=Type, Constraint, Aligned) ->
gen_dec_k_m_string(Type, Constraint, Aligned);
gen_dec_imm_1('PrintableString'=Type, Constraint, Aligned) ->
gen_dec_k_m_string(Type, Constraint, Aligned);
gen_dec_imm_1('VisibleString'=Type, Constraint, Aligned) ->
gen_dec_k_m_string(Type, Constraint, Aligned);
gen_dec_imm_1('IA5String'=Type, Constraint, Aligned) ->
gen_dec_k_m_string(Type, Constraint, Aligned);
gen_dec_imm_1('UniversalString'=Type, Constraint, Aligned) ->
gen_dec_k_m_string(Type, Constraint, Aligned);
gen_dec_imm_1('UTCTime', Constraint, Aligned) ->
gen_dec_k_m_string('VisibleString', Constraint, Aligned);
gen_dec_imm_1('GeneralizedTime', Constraint, Aligned) ->
gen_dec_k_m_string('VisibleString', Constraint, Aligned);
gen_dec_imm_1('OCTET STRING', Constraint, Aligned) ->
SzConstr = asn1ct_imm:effective_constraint(bitstring, Constraint),
Imm = asn1ct_imm:per_dec_octet_string(SzConstr, Aligned),
{convert,binary_to_list,Imm};
gen_dec_imm_1('TeletexString', _Constraint, Aligned) ->
gen_dec_restricted_string(Aligned);
gen_dec_imm_1('T61String', _Constraint, Aligned) ->
gen_dec_restricted_string(Aligned);
gen_dec_imm_1('VideotexString', _Constraint, Aligned) ->
gen_dec_restricted_string(Aligned);
gen_dec_imm_1('GraphicString', _Constraint, Aligned) ->
gen_dec_restricted_string(Aligned);
gen_dec_imm_1('GeneralString', _Constraint, Aligned) ->
gen_dec_restricted_string(Aligned);
gen_dec_imm_1('ObjectDescriptor', _Constraint, Aligned) ->
gen_dec_restricted_string(Aligned);
gen_dec_imm_1('OBJECT IDENTIFIER', _Constraint, Aligned) ->
Dec = fun(V, Buf) ->
emit(["{",{call,per_common,decode_oid,[V]},com,
Buf,"}"])
end,
{call,Dec,gen_dec_restricted_string(Aligned)};
gen_dec_imm_1('RELATIVE-OID', _Constraint, Aligned) ->
Dec = fun(V, Buf) ->
emit(["{",{call,per_common,decode_relative_oid,[V]},com,
Buf,"}"])
end,
{call,Dec,gen_dec_restricted_string(Aligned)};
gen_dec_imm_1('UTF8String', _Constraint, Aligned) ->
asn1ct_imm:per_dec_restricted_string(Aligned);
gen_dec_imm_1('REAL', _Constraint, Aligned) ->
asn1ct_imm:per_dec_real(Aligned);
gen_dec_imm_1(#'ObjectClassFieldType'{}=TypeName, _Constraint, Aligned) ->
case asn1ct_gen:get_inner(TypeName) of
{fixedtypevaluefield,_,#type{def=InnerType,constraint=C}} ->
gen_dec_imm_1(InnerType, C, Aligned);
#type{def=T,constraint=C} ->
gen_dec_imm_1(T, C, Aligned)
end.
gen_dec_bit_string(F, Imm) ->
D = fun(V, Buf) ->
emit(["{",{call,per_common,F,[V]},com,Buf,"}"])
end,
{call,D,Imm}.
gen_dec_copy_bitstring(Imm) ->
D = fun(V, Buf) ->
emit(["{list_to_bitstring([",V,"]),",Buf,"}"])
end,
{call,D,Imm}.
gen_dec_k_m_string(Type, Constraint, Aligned) ->
asn1ct_imm:per_dec_k_m_string(Type, Constraint, Aligned).
gen_dec_restricted_string(Aligned) ->
Imm = asn1ct_imm:per_dec_restricted_string(Aligned),
{convert,binary_to_list,Imm}.
gen_dec_prim(Erule, Type, BytesVar) ->
Imm = gen_dec_imm(Erule, Type),
asn1ct_imm:dec_code_gen(Imm, BytesVar).
is_already_generated(Operation,Name) ->
case get(class_default_type) of
undefined ->
put(class_default_type,[{Operation,Name}]),
false;
GeneratedList ->
case lists:member({Operation,Name},GeneratedList) of
true ->
true;
false ->
put(class_default_type,[{Operation,Name}|GeneratedList]),
false
end
end.
get_class_fields(#classdef{typespec=ObjClass}) ->
ObjClass#objectclass.fields;
get_class_fields(#objectclass{fields=Fields}) ->
Fields;
get_class_fields(_) ->
[].
get_object_field(Name,ObjectFields) ->
case lists:keysearch(Name,1,ObjectFields) of
{value,Field} -> Field;
false -> false
end.
%% For PER the ExtensionAdditionGroup notation has significance for the encoding and decoding
%% the components within the ExtensionAdditionGroup is treated in a similar way as if they
%% 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,0,[]).
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,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).
imm_decode_open_type([#'Externaltypereference'{type=Tname}], Aligned) ->
imm_dec_open_type_1(Tname, Aligned);
imm_decode_open_type([#type{def=#'Externaltypereference'{type=Tname}}],
Aligned) ->
imm_dec_open_type_1(Tname, Aligned);
imm_decode_open_type(_, Aligned) ->
asn1ct_imm:per_dec_open_type(Aligned).
imm_dec_open_type_1(Type, Aligned) ->
D = fun(OpenType, Buf) ->
asn1ct_name:new(tmpval),
emit(["begin",nl,
"{",{curr,tmpval},",_} = ",
"dec_",Type,"(",OpenType,", mandatory),",nl,
"{",{curr,tmpval},com,Buf,"}",nl,
"end"])
end,
{call,D,asn1ct_imm:per_dec_open_type(Aligned)}.
eval_module(per) -> asn1ct_eval_per;
eval_module(uper) -> asn1ct_eval_uper.
