%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2012. 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([pgen/4,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([is_already_generated/2,more_genfields/1,get_class_fields/1,
get_object_field/2]).
-export([extaddgroup2sequence/1]).
-import(asn1ct_gen, [emit/1,demit/1]).
%% pgen(Erules, Module, TypeOrVal)
%% Generate Erlang module (.erl) and (.hrl) file corresponding to an ASN.1 module
%% .hrl file is only generated if necessary
%% Erules = per | ber
%% Module = atom()
%% TypeOrVal = {TypeList,ValueList}
%% TypeList = ValueList = [atom()]
pgen(OutFile,Erules,Module,TypeOrVal) ->
asn1ct_gen:pgen_module(OutFile,Erules,Module,TypeOrVal,[],true).
%% 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} ->
case InnerType of
'SET' ->
true;
'SEQUENCE' ->
true;
_ ->
emit({nl,"'enc_",asn1ct_gen:list2name(Typename),
"'({'",asn1ct_gen:list2name(Typename),
"',Val}",ObjFun,") ->",nl}),
emit({"'enc_",asn1ct_gen:list2name(Typename),
"'(Val",ObjFun,");",nl,nl})
end,
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),
case InnerType of
'SET' -> true;
'SEQUENCE' -> true;
_ ->
emit({nl,"'enc_",asn1ct_gen:list2name(Typename),"'({'",asn1ct_gen:list2name(Typename),"',Val}) ->",nl}),
emit({"'enc_",asn1ct_gen:list2name(Typename),"'(Val);",nl,nl})
end,
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});
#typereference{val=Ename} ->
emit({"'enc_",Ename,"'(Val).",nl,nl});
{notype,_} ->
emit({"'enc_",InnerType,"'(Val).",nl,nl})
end.
gen_encode_prim(Erules,D,DoTag) ->
Value = case asn1ct_name:active(val) of
true ->
asn1ct_gen:mk_var(asn1ct_name:curr(val));
false ->
"Val"
end,
gen_encode_prim(Erules,D,DoTag,Value).
gen_encode_prim(Erules,D,DoTag,Value) when is_record(D,type) ->
Constraint = D#type.constraint,
asn1ct_name:new(enumval),
case D#type.def of
'INTEGER' ->
emit({"?RT_PER:encode_integer(", %fel
{asis,asn1ct_imm:effective_constraint(integer,Constraint)},
",",Value,")"});
{'INTEGER',NamedNumberList} ->
emit({"?RT_PER:encode_integer(",
{asis,asn1ct_imm:effective_constraint(integer,Constraint)},
",",Value,",",
{asis,NamedNumberList},")"});
{'ENUMERATED',{Nlist1,Nlist2}} ->
NewList = lists:concat([[{0,X}||{X,_} <- Nlist1],['EXT_MARK'],[{1,X}||{X,_} <- Nlist2]]),
NewC = [{'ValueRange',{0,length(Nlist1)-1}}],
case Erules of
uper ->
emit(["case ",Value," of",nl]);
_ ->
emit(["case (case ",Value," of {_,",{curr,enumval},"}-> ",
{curr,enumval},";_->", Value," end) of",nl]),
asn1ct_name:new(enumval)
end,
%% emit_enc_enumerated_cases(Erules,NewC, NewList++[{asn1_enum,length(Nlist1)-1}], 0);
emit_enc_enumerated_cases(Erules,NewC, NewList, 0);
{'ENUMERATED',NamedNumberList} ->
NewList = [X||{X,_} <- NamedNumberList],
NewC = [{'ValueRange',{0,length(NewList)-1}}],
case Erules of
uper ->
emit(["case ",Value," of",nl]);
_ ->
emit(["case (case ",Value," of {_,",{curr,enumval},
"}->",{curr,enumval},";_->",Value," end) of",nl])
end,
emit_enc_enumerated_cases(Erules,NewC, NewList, 0);
'REAL' ->
emit({"?RT_PER:encode_real(",Value,")"});
{'BIT STRING',NamedNumberList} ->
emit({"?RT_PER:encode_bit_string(",
{asis,Constraint},",",Value,",",
{asis,NamedNumberList},")"});
'NULL' ->
emit("[]");
'OBJECT IDENTIFIER' ->
emit({"?RT_PER:encode_object_identifier(",Value,")"});
'RELATIVE-OID' ->
emit({"?RT_PER:encode_relative_oid(",Value,")"});
'ObjectDescriptor' ->
emit({"?RT_PER:encode_ObjectDescriptor(",{asis,Constraint},
",",Value,")"});
'BOOLEAN' ->
emit({"?RT_PER:encode_boolean(",Value,")"});
'OCTET STRING' ->
emit({"?RT_PER:encode_octet_string(",{asis,Constraint},",",Value,")"});
'NumericString' ->
emit({"?RT_PER:encode_NumericString(",{asis,Constraint},",",Value,")"});
TString when TString == 'TeletexString';
TString == 'T61String' ->
emit({"?RT_PER:encode_TeletexString(",{asis,Constraint},",",Value,")"});
'VideotexString' ->
emit({"?RT_PER:encode_VideotexString(",{asis,Constraint},",",Value,")"});
'UTCTime' ->
emit({"?RT_PER:encode_VisibleString(",{asis,Constraint},",",Value,")"});
'GeneralizedTime' ->
emit({"?RT_PER:encode_VisibleString(",{asis,Constraint},",",Value,")"});
'GraphicString' ->
emit({"?RT_PER:encode_GraphicString(",{asis,Constraint},",",Value,")"});
'VisibleString' ->
emit({"?RT_PER:encode_VisibleString(",{asis,Constraint},",",Value,")"});
'GeneralString' ->
emit({"?RT_PER:encode_GeneralString(",{asis,Constraint},
",",Value,")"});
'PrintableString' ->
emit({"?RT_PER:encode_PrintableString(",{asis,Constraint},
",",Value,")"});
'IA5String' ->
emit({"?RT_PER:encode_IA5String(",{asis,Constraint},
",",Value,")"});
'BMPString' ->
emit({"?RT_PER:encode_BMPString(",{asis,Constraint},
",",Value,")"});
'UniversalString' ->
emit({"?RT_PER:encode_UniversalString(",{asis,Constraint},
",",Value,")"});
'UTF8String' ->
emit({"?RT_PER:encode_UTF8String(",Value,")"});
'ANY' ->
emit(["?RT_PER:encode_open_type(", {asis,Constraint}, ",",
Value, ")"]);
'ASN1_OPEN_TYPE' ->
NewValue = case Constraint of
[#'Externaltypereference'{type=Tname}] ->
io_lib:format(
"?RT_PER:complete(enc_~s(~s))",[Tname,Value]);
[#type{def=#'Externaltypereference'{type=Tname}}] ->
io_lib:format(
"?RT_PER:complete(enc_~s(~s))",
[Tname,Value]);
_ -> Value
end,
emit(["?RT_PER:encode_open_type(", {asis,Constraint}, ",",
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_enumerated_cases(Erule,C, [H], Count) ->
emit_enc_enumerated_case(Erule,C, H, Count),
case H of
'EXT_MARK' -> ok;
_ ->
emit([";",nl])
end,
emit([nl,"EnumVal -> exit({error,{asn1, {enumerated_not_in_range, EnumVal}}})"]),
emit([nl,"end"]);
emit_enc_enumerated_cases(Erule, C, ['EXT_MARK'|T], _Count) ->
emit_enc_enumerated_cases(Erule, C, T, 0);
emit_enc_enumerated_cases(Erule, C, [H1,H2|T], Count) ->
emit_enc_enumerated_case(Erule, C, H1, Count),
emit([";",nl]),
emit_enc_enumerated_cases(Erule, C, [H2|T], Count+1).
emit_enc_enumerated_case(uper,_C, {asn1_enum,High}, _) ->
emit([
"{asn1_enum,EnumV} when is_integer(EnumV), EnumV > ",High," -> ",
"[<<1:1>>,?RT_PER:encode_small_number(EnumV)]"]);
emit_enc_enumerated_case(_Per,_C, {asn1_enum,High}, _) ->
emit([
"{asn1_enum,EnumV} when is_integer(EnumV), EnumV > ",High," -> ",
"[{bit,1},?RT_PER:encode_small_number(EnumV)]"]);
emit_enc_enumerated_case(_Erule, _C, 'EXT_MARK', _Count) ->
true;
emit_enc_enumerated_case(uper,_C, {1,EnumName}, Count) ->
emit(["'",EnumName,"' -> [<<1:1>>,?RT_PER:encode_small_number(",Count,")]"]);
emit_enc_enumerated_case(_Per,_C, {1,EnumName}, Count) ->
emit(["'",EnumName,"' -> [{bit,1},?RT_PER:encode_small_number(",Count,")]"]);
emit_enc_enumerated_case(uper,C, {0,EnumName}, Count) ->
emit(["'",EnumName,"' -> [<<0:1>>,?RT_PER:encode_integer(",{asis,C},", ",Count,")]"]);
emit_enc_enumerated_case(_Per,C, {0,EnumName}, Count) ->
emit(["'",EnumName,"' -> [{bit,0},?RT_PER:encode_integer(",{asis,C},", ",Count,")]"]);
emit_enc_enumerated_case(_Erule, C, EnumName, Count) ->
emit(["'",EnumName,"' -> ?RT_PER:encode_integer(",{asis,C},", ",Count,")"]).
get_constraint([{Key,V}], Key) ->
V;
get_constraint([], _) ->
no;
get_constraint(C, Key) ->
case lists:keyfind(Key, 1, C) of
false -> no;
{Key,V} -> V
end.
%% 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(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");
_ ->
emit(" [{octets,Val}]")
end,
[];
{false,{'DEFAULT',DefaultType}} ->
EmitFuncClause("Val"),
gen_encode_default_call(ClassName,Name,DefaultType);
{{Name,TypeSpec},_} ->
%% A specified field owerwrites any 'DEFAULT' or
%% 'OPTIONAL' field in the class
EmitFuncClause("Val"),
gen_encode_field_call(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(_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(ObjName,FieldName,Type) ->
Def = Type#typedef.typespec,
case Type#typedef.name of
{primitive,bif} ->
gen_encode_prim(per,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(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(per,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(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(ClassName,Name,"Bytes",DefaultType);
{{Name,TypeSpec},_} ->
%% A specified field owerwrites any 'DEFAULT' or
%% 'OPTIONAL' field in the class
EmitFuncClause("Bytes"),
gen_decode_field_call(ObjName,Name,"Bytes",TypeSpec)
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_decode_objectfields(ClassName,Rest,ObjName,ObjectFields,MaybeConstr++ConstrAcc);
gen_decode_objectfields(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(ClassName,Rest,ObjName,ObjectFields,ConstrAcc);
gen_decode_objectfields(CN,[_C|Cs],O,OF,CAcc) ->
gen_decode_objectfields(CN,Cs,O,OF,CAcc);
gen_decode_objectfields(_,[],_,_,CAcc) ->
CAcc.
gen_decode_field_call(_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(ObjName,FieldName,Bytes,Type) ->
Def = Type#typedef.typespec,
case Type#typedef.name of
{primitive,bif} ->
gen_dec_prim(per,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(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(per,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(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,ObjSName,UniqueName,[{ObjName,Val,Fields},T|Rest],
ClName,ClFields,NthObj,Acc)->
emit({"'getenc_",ObjSName,"'(",{asis,UniqueName},",",{asis,Val},
") ->",nl}),
CurrMod = get(currmod),
{InternalFunc,NewNthObj}=
case ObjName of
{no_mod,no_name} ->
gen_inlined_enc_funs(Erule,Fields,ClFields,ObjSName,NthObj);
{CurrMod,Name} ->
emit({" fun 'enc_",Name,"'/3"}),
{[],0};
{ModName,Name} ->
emit_ext_encfun(ModName,Name),
% emit([" {'",ModName,"', 'enc_",Name,"'}"]),
{[],0};
_Other ->
emit({" fun 'enc_",ObjName,"'/3"}),
{[],0}
end,
emit({";",nl}),
gen_objset_enc(Erule,ObjSName,UniqueName,[T|Rest],ClName,ClFields,
NewNthObj,InternalFunc ++ Acc);
gen_objset_enc(Erule,ObjSetName,UniqueName,
[{ObjName,Val,Fields}],_ClName,ClFields,NthObj,Acc) ->
emit({"'getenc_",ObjSetName,"'(",{asis,UniqueName},",",
{asis,Val},") ->",nl}),
CurrMod = get(currmod),
{InternalFunc,_}=
case ObjName of
{no_mod,no_name} ->
gen_inlined_enc_funs(Erule,Fields,ClFields,ObjSetName,NthObj);
{CurrMod,Name} ->
emit({" fun 'enc_",Name,"'/3"}),
{[],NthObj};
{ModName,Name} ->
emit_ext_encfun(ModName,Name),
% emit([" {'",ModName,"', 'enc_",Name,"'}"]),
{[],NthObj};
_Other ->
emit({" fun 'enc_",ObjName,"'/3"}),
{[],NthObj}
end,
emit([";",nl]),
emit_default_getenc(ObjSetName,UniqueName),
emit({".",nl,nl}),
InternalFunc++Acc;
gen_objset_enc(Erule,ObjSetName,_UniqueName,['EXTENSIONMARK'],_ClName,
_ClFields,_NthObj,Acc) ->
emit({"'getenc_",ObjSetName,"'(_, _) ->",nl}),
emit({indent(3),"fun(_, Val, _) ->",nl}),
case Erule of
uper ->
emit([indent(6),"Val",nl]);
_ ->
emit([indent(6),"[{octets,Val}]",nl])
end,
emit({indent(3),"end.",nl,nl}),
Acc;
gen_objset_enc(_,_,_,[],_,_,_,Acc) ->
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,Name,_}|Rest],ObjSetName,NthObj) ->
CurrMod = get(currmod),
InternalDefFunName = asn1ct_gen:list2name([NthObj,Name,ObjSetName]),
case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when is_record(Type,type) ->
emit({indent(3),"fun(Type, Val, _) ->",nl,
indent(6),"case Type of",nl}),
{Ret,N}=emit_inner_of_fun(Type,InternalDefFunName),
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj+N,Ret);
{value,{_,Type}} when is_record(Type,typedef) ->
emit({indent(3),"fun(Type, Val, _) ->",nl,
indent(6),"case Type of",nl}),
emit({indent(9),{asis,Name}," ->",nl}),
{Ret,N} = emit_inner_of_fun(Type,InternalDefFunName),
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj+N,Ret);
{value,{_,#'Externaltypereference'{module=CurrMod,type=T}}} ->
emit({indent(3),"fun(Type, Val, _) ->",nl,
indent(6),"case Type of",nl}),
emit({indent(9),{asis,Name}," ->",nl}),
emit([indent(12),"'enc_",T,"'(Val)"]),
% {Ret,N} = emit_inner_of_fun(TDef,InternalDefFunName),
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj,[]);
{value,{_,#'Externaltypereference'{module=M,type=T}}} ->
emit({indent(3),"fun(Type, Val, _) ->",nl,
indent(6),"case Type of",nl}),
emit({indent(9),{asis,Name}," ->",nl}),
emit([indent(12),"'",M,"'",":'enc_",T,"'(Val)"]),
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj,[]);
false when Erule =:= uper ->
emit([indent(3),"fun(Type,Val,_) ->",nl,
indent(6),"case Type of",nl,
indent(9),{asis,Name}," -> Val",nl]),
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj,[]);
false ->
emit([indent(3),"fun(Type,Val,_) ->",nl,
indent(6),"case Type of",nl,
indent(9),{asis,Name}," -> [{octets,Val}]",nl]),
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj,[])
end;
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,
NthObj,Acc) ->
CurrentMod = get(currmod),
InternalDefFunName = asn1ct_gen:list2name([NthObj,Name,ObjSetName]),
{Acc2,NAdd}=
case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when is_record(Type,type) ->
emit({";",nl}),
{Ret,N}=emit_inner_of_fun(Type,InternalDefFunName),
{Ret++Acc,N};
{value,{_,Type}} when is_record(Type,typedef) ->
emit({";",nl,indent(9),{asis,Name}," ->",nl}),
{Ret,N}=emit_inner_of_fun(Type,InternalDefFunName),
{Ret++Acc,N};
{value,{_,#'Externaltypereference'{module=CurrentMod,type=T}}} ->
emit({";",nl,indent(9),{asis,Name}," ->",nl}),
emit([indent(12),"'enc_",T,"'(Val)"]),
{Acc,0};
{value,{_,#'Externaltypereference'{module=M,type=T}}} ->
emit({";",nl,indent(9),{asis,Name}," ->",nl}),
emit([indent(12),"'",M,"'",":'enc_",T,"'(Val)"]),
{Acc,0};
false when Erule =:= uper ->
emit([";",nl,
indent(9),{asis,Name}," -> ",nl,
"Val",nl]),
{Acc,0};
false ->
emit([";",nl,
indent(9),{asis,Name}," -> ",nl,
"[{octets,Val}]",nl]),
{Acc,0}
end,
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj+NAdd,Acc2);
gen_inlined_enc_funs1(Erule,Fields,[_H|Rest],ObjSetName,NthObj,Acc)->
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj,Acc);
gen_inlined_enc_funs1(_,_,[],_,NthObj,Acc) ->
emit({nl,indent(6),"end",nl}),
emit({indent(3),"end"}),
{Acc,NthObj}.
emit_inner_of_fun(TDef=#typedef{name={ExtMod,Name},typespec=Type},
InternalDefFunName) ->
case {ExtMod,Name} of
{primitive,bif} ->
emit(indent(12)),
gen_encode_prim(per,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(#typedef{name=Name},_) ->
emit({indent(12),"'enc_",Name,"'(Val)"}),
{[],0};
emit_inner_of_fun(Type,_) when is_record(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(erules,Type,dotag,"Val");
TRef when is_record(TRef,typereference) ->
T = TRef#typereference.val,
emit({indent(9),T," ->",nl,indent(12),"'enc_",T,"'(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(ObjSName,UniqueName,[{ObjName,Val,Fields},T|Rest],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(Fields,ClFields,ObjSName,NthObj);
{CurrMod,Name} ->
emit([" fun 'dec_",Name,"'/4"]),
NthObj;
{ModName,Name} ->
emit_ext_decfun(ModName,Name),
% emit([" {'",ModName,"', 'dec_",Name,"'}"]),
NthObj;
_Other ->
emit({" fun 'dec_",ObjName,"'/4"}),
NthObj
end,
emit({";",nl}),
gen_objset_dec(ObjSName,UniqueName,[T|Rest],ClName,ClFields,NewNthObj);
gen_objset_dec(ObjSetName,UniqueName,[{ObjName,Val,Fields}],_ClName,
ClFields,NthObj) ->
emit({"'getdec_",ObjSetName,"'(",{asis,UniqueName},",",{asis,Val},
") ->",nl}),
CurrMod=get(currmod),
case ObjName of
{no_mod,no_name} ->
gen_inlined_dec_funs(Fields,ClFields,ObjSetName,NthObj);
{CurrMod,Name} ->
emit([" fun 'dec_",Name,"'/4"]);
{ModName,Name} ->
emit_ext_decfun(ModName,Name);
% emit([" {'",ModName,"', 'dec_",Name,"'}"]);
_Other ->
emit({" fun 'dec_",ObjName,"'/4"})
end,
emit([";",nl]),
emit_default_getdec(ObjSetName,UniqueName),
emit({".",nl,nl}),
ok;
gen_objset_dec(ObjSetName,_UniqueName,['EXTENSIONMARK'],_ClName,_ClFields,
_NthObj) ->
emit({"'getdec_",ObjSetName,"'(_, _) ->",nl}),
emit({indent(3),"fun(Attr1, Bytes, _,_) ->",nl}),
%% emit({indent(6),"?RT_PER:decode_open_type(Bytes,[])",nl}),
emit({indent(6),"{Bytes,Attr1}",nl}),
emit({indent(3),"end.",nl,nl}),
ok;
gen_objset_dec(_,_,[],_,_,_) ->
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(Fields,[{typefield,Name,_}|Rest],
ObjSetName,NthObj) ->
CurrMod = get(currmod),
InternalDefFunName = [NthObj,Name,ObjSetName],
case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when is_record(Type,type) ->
emit({indent(3),"fun(Type, Val, _, _) ->",nl,
indent(6),"case Type of",nl}),
N=emit_inner_of_decfun(Type,InternalDefFunName),
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj+N);
{value,{_,Type}} when is_record(Type,typedef) ->
emit({indent(3),"fun(Type, Val, _, _) ->",nl,
indent(6),"case Type of",nl}),
emit({indent(9),{asis,Name}," ->",nl}),
N=emit_inner_of_decfun(Type,InternalDefFunName),
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj+N);
{value,{_,#'Externaltypereference'{module=CurrMod,type=T}}} ->
emit({indent(3),"fun(Type, Val, _, _) ->",nl,
indent(6),"case Type of",nl}),
emit({indent(9),{asis,Name}," ->",nl}),
emit([indent(12),"'dec_",T,"'(Val, telltype)"]),
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj);
{value,{_,#'Externaltypereference'{module=M,type=T}}} ->
emit({indent(3),"fun(Type, Val, _, _) ->",nl,
indent(6),"case Type of",nl}),
emit({indent(9),{asis,Name}," ->",nl}),
emit([indent(12),"'",M,"':'dec_",T,"'(Val, telltype)"]),
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj);
false ->
emit([indent(3),"fun(Type, Val, _, _) ->",nl,
indent(6),"case Type of",nl,
indent(9),{asis,Name}," ->{Val,Type}"]),
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj)
end;
gen_inlined_dec_funs(Fields,[_|Rest],ObjSetName,NthObj) ->
gen_inlined_dec_funs(Fields,Rest,ObjSetName,NthObj);
gen_inlined_dec_funs(_,[],_,NthObj) ->
NthObj.
gen_inlined_dec_funs1(Fields,[{typefield,Name,_}|Rest],
ObjSetName,NthObj) ->
CurrentMod = get(currmod),
InternalDefFunName = [NthObj,Name,ObjSetName],
N=case lists:keysearch(Name,1,Fields) of
{value,{_,Type}} when is_record(Type,type) ->
emit({";",nl}),
emit_inner_of_decfun(Type,InternalDefFunName);
{value,{_,Type}} when is_record(Type,typedef) ->
emit({";",nl,indent(9),{asis,Name}," ->",nl}),
emit_inner_of_decfun(Type,InternalDefFunName);
{value,{_,#'Externaltypereference'{module=CurrentMod,type=T}}} ->
emit([";",nl,indent(9),{asis,Name}," ->",nl]),
emit([indent(12),"'dec_",T,"'(Val,telltype)"]),
0;
{value,{_,#'Externaltypereference'{module=M,type=T}}} ->
emit([";",nl,indent(9),{asis,Name}," ->",nl]),
emit([indent(12),"'",M,"'",":'dec_",T,"'(Val,telltype)"]),
0;
false ->
emit([";",nl,
indent(9),{asis,Name}," ->{Val,Type}"]),
0
end,
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj+N);
gen_inlined_dec_funs1(Fields,[_|Rest],ObjSetName,NthObj)->
gen_inlined_dec_funs1(Fields,Rest,ObjSetName,NthObj);
gen_inlined_dec_funs1(_,[],_,NthObj) ->
emit({nl,indent(6),"end",nl}),
emit({indent(3),"end"}),
NthObj.
emit_inner_of_decfun(#typedef{name={ExtName,Name},typespec=Type},
InternalDefFunName) ->
case {ExtName,Name} of
{primitive,bif} ->
emit(indent(12)),
gen_dec_prim(per,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(#typedef{name=Name},_) ->
emit({indent(12),"'dec_",Name,"'(Val, telltype)"}),
0;
emit_inner_of_decfun(Type,_) when is_record(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(erules,Type,"Val");
TRef when is_record(TRef,typereference) ->
T = TRef#typereference.val,
emit({indent(9),T," ->",nl,indent(12),"'dec_",T,"'(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);
#typereference{val=Dname} ->
emit({"'dec_",Dname,"'(Bytes,telltype)"}),
emit({".",nl,nl});
#'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_prim(Erules,Att,BytesVar) ->
Aligned = case Erules of
uper -> false;
per -> true
end,
Typename = Att#type.def,
Constraint = Att#type.constraint,
case Typename of
'INTEGER' ->
Imm = asn1ct_imm:per_dec_integer(Constraint, Aligned),
asn1ct_imm:dec_code_gen(Imm, BytesVar);
{'INTEGER',NamedNumberList} ->
Imm = asn1ct_imm:per_dec_named_integer(Constraint,
NamedNumberList,
Aligned),
asn1ct_imm:dec_code_gen(Imm, BytesVar);
'REAL' ->
emit({"?RT_PER:decode_real(",BytesVar,")"});
{'BIT STRING',NamedNumberList} ->
case get(compact_bit_string) of
true ->
emit({"?RT_PER:decode_compact_bit_string(",
BytesVar,",",{asis,Constraint},",",
{asis,NamedNumberList},")"});
_ ->
emit({"?RT_PER:decode_bit_string(",BytesVar,",",
{asis,Constraint},",",
{asis,NamedNumberList},")"})
end;
'NULL' ->
emit({"{'NULL',",BytesVar,"}"});
'OBJECT IDENTIFIER' ->
emit({"?RT_PER:decode_object_identifier(",
BytesVar,")"});
'RELATIVE-OID' ->
emit({"?RT_PER:decode_relative_oid(",
BytesVar,")"});
'ObjectDescriptor' ->
emit({"?RT_PER:decode_ObjectDescriptor(",
BytesVar,")"});
{'ENUMERATED',{Base,Ext}} ->
Imm = asn1ct_imm:per_dec_enumerated(Base, Ext, Aligned),
asn1ct_imm:dec_code_gen(Imm, BytesVar);
{'ENUMERATED',NamedNumberList} ->
Imm = asn1ct_imm:per_dec_enumerated(NamedNumberList, Aligned),
asn1ct_imm:dec_code_gen(Imm, BytesVar);
'BOOLEAN'->
Imm = asn1ct_imm:per_dec_boolean(),
asn1ct_imm:dec_code_gen(Imm, BytesVar);
'OCTET STRING' ->
SzConstr = get_constraint(Constraint, 'SizeConstraint'),
Imm0 = asn1ct_imm:per_dec_octet_string(SzConstr, Aligned),
Imm = {convert,binary_to_list,Imm0},
asn1ct_imm:dec_code_gen(Imm, BytesVar);
'NumericString' ->
emit({"?RT_PER:decode_NumericString(",BytesVar,",",
{asis,Constraint},")"});
TString when TString == 'TeletexString';
TString == 'T61String' ->
emit({"?RT_PER:decode_TeletexString(",BytesVar,",",
{asis,Constraint},")"});
'VideotexString' ->
emit({"?RT_PER:decode_VideotexString(",BytesVar,",",
{asis,Constraint},")"});
'UTCTime' ->
emit({"?RT_PER:decode_VisibleString(",BytesVar,",",
{asis,Constraint},")"});
'GeneralizedTime' ->
emit({"?RT_PER:decode_VisibleString(",BytesVar,",",
{asis,Constraint},")"});
'GraphicString' ->
emit({"?RT_PER:decode_GraphicString(",BytesVar,",",
{asis,Constraint},")"});
'VisibleString' ->
emit({"?RT_PER:decode_VisibleString(",BytesVar,",",
{asis,Constraint},")"});
'GeneralString' ->
emit({"?RT_PER:decode_GeneralString(",BytesVar,",",
{asis,Constraint},")"});
'PrintableString' ->
emit({"?RT_PER:decode_PrintableString(",BytesVar,",",{asis,Constraint},")"});
'IA5String' ->
emit({"?RT_PER:decode_IA5String(",BytesVar,",",{asis,Constraint},")"});
'BMPString' ->
emit({"?RT_PER:decode_BMPString(",BytesVar,",",
{asis,Constraint},")"});
'UniversalString' ->
emit({"?RT_PER:decode_UniversalString(",BytesVar,
",",{asis,Constraint},")"});
'UTF8String' ->
emit({"?RT_PER:decode_UTF8String(",BytesVar,")"});
'ANY' ->
case Erules of
per ->
emit(["fun() -> {XTerm,YTermXBytes} = ?RT_PER:decode_open_type(",BytesVar,",",{asis,Constraint}, "), {binary_to_list(XTerm),XBytes} end ()"]);
_ ->
emit(["?RT_PER:decode_open_type(",BytesVar,",",
{asis,Constraint}, ")"])
end;
'ASN1_OPEN_TYPE' ->
case Constraint of
[#'Externaltypereference'{type=Tname}] ->
emit(["fun(FBytes) ->",nl,
" {XTerm,XBytes} = "]),
emit(["?RT_PER:decode_open_type(FBytes,[]),",nl]),
emit([" {YTerm,_} = dec_",Tname,"(XTerm,mandatory),",nl]),
emit([" {YTerm,XBytes} end(",BytesVar,")"]);
[#type{def=#'Externaltypereference'{type=Tname}}] ->
emit(["fun(FBytes) ->",nl,
" {XTerm,XBytes} = "]),
emit(["?RT_PER:decode_open_type(FBytes,[]),",nl]),
emit([" {YTerm,_} = dec_",Tname,"(XTerm,mandatory),",nl]),
emit([" {YTerm,XBytes} end(",BytesVar,")"]);
_ ->
case Erules of
per ->
emit(["fun() -> {XTerm,XBytes} = ?RT_PER:decode_open_type(",BytesVar,", []), {binary_to_list(XTerm),XBytes} end()"]);
_ ->
emit(["?RT_PER:decode_open_type(",BytesVar,",[])"])
end
end;
#'ObjectClassFieldType'{} ->
case asn1ct_gen:get_inner(Att#type.def) of
{fixedtypevaluefield,_,InnerType} ->
gen_dec_prim(Erules,InnerType,BytesVar);
T ->
gen_dec_prim(Erules,Att#type{def=T},BytesVar)
end;
Other ->
exit({'cant decode' ,Other})
end.
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).
