%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2002-2013. 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_rt2ct).
%% 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([extaddgroup2sequence/1]).
-import(asn1ct_gen, [emit/1,demit/1]).
-import(asn1ct_gen_per, [is_already_generated/2,more_genfields/1,
get_class_fields/1,get_object_field/2]).
-import(asn1ct_func, [call/3]).
%% 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).
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}} ->
", 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});
#typereference{val=Ename} ->
emit({"'enc_",Ename,"'(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,D,DoTag,Value) when is_record(D,type) ->
Constraint = D#type.constraint,
case D#type.def of
'INTEGER' ->
EffectiveConstr = effective_constraint(integer,Constraint),
emit([" %%INTEGER with effective constraint: ",
{asis,EffectiveConstr},nl]),
emit_enc_integer(Erules,EffectiveConstr,Value);
{'INTEGER',NamedNumberList} ->
EffectiveConstr = effective_constraint(integer,Constraint),
%% maybe an emit_enc_NNL_integer
emit([" %%INTEGER with effective constraint: ",
{asis,EffectiveConstr},nl]),
emit_enc_integer_NNL(Erules,EffectiveConstr,Value,NamedNumberList);
{'ENUMERATED',_} ->
asn1ct_gen_per:gen_encode_prim(Erules, D, DoTag, Value);
'REAL' ->
emit_enc_real(Erules, Value);
{'BIT STRING',NamedNumberList} ->
EffectiveC = effective_constraint(bitstring,Constraint),
case EffectiveC of
0 ->
emit({"[]"});
_ ->
call(Erules, encode_bit_string,
[{asis,EffectiveC},Value,
{asis,NamedNumberList}])
end;
'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' ->
emit({"case ",Value," of",nl,
" true -> [1];",nl,
" false -> [0];",nl,
" _ -> exit({error,{asn1,{encode_boolean,",Value,"}}})",nl,
"end"});
'OCTET STRING' ->
emit_enc_octet_string(Erules,Constraint,Value);
'NumericString' ->
emit_enc_known_multiplier_string('NumericString',Constraint,Value);
TString when TString == 'TeletexString';
TString == 'T61String' ->
call(Erules, encode_TeletexString, [{asis,Constraint},Value]);
'VideotexString' ->
call(Erules, encode_VideotexString, [{asis,Constraint},Value]);
'UTCTime' ->
emit_enc_known_multiplier_string('VisibleString',Constraint,Value);
'GeneralizedTime' ->
emit_enc_known_multiplier_string('VisibleString',Constraint,Value);
'GraphicString' ->
call(Erules, encode_GraphicString, [{asis,Constraint},Value]);
'VisibleString' ->
emit_enc_known_multiplier_string('VisibleString',Constraint,Value);
'GeneralString' ->
call(Erules, encode_GeneralString, [{asis,Constraint},Value]);
'PrintableString' ->
emit_enc_known_multiplier_string('PrintableString',Constraint,Value);
'IA5String' ->
emit_enc_known_multiplier_string('IA5String',Constraint,Value);
'BMPString' ->
emit_enc_known_multiplier_string('BMPString',Constraint,Value);
'UniversalString' ->
emit_enc_known_multiplier_string('UniversalString',Constraint,Value);
'UTF8String' ->
call(Erules, encode_UTF8String, [Value]);
'ANY' ->
call(Erules, encode_open_type, [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}]},",",nl,
{call,Erules,octets_to_complete,
[{curr,tmplen},{curr,tmpval}]},"]",nl,
"end"]).
emit_enc_known_multiplier_string(StringType,C,Value) ->
SizeC =
case get_constraint(C,'SizeConstraint') of
L when is_list(L) -> {lists:min(L),lists:max(L)};
L -> L
end,
PAlphabC = get_constraint(C,'PermittedAlphabet'),
case {StringType,PAlphabC} of
{'UniversalString',{_,_}} ->
exit({error,{asn1,{'not implemented',"UniversalString with "
"PermittedAlphabet constraint"}}});
{'BMPString',{_,_}} ->
exit({error,{asn1,{'not implemented',"BMPString with "
"PermittedAlphabet constraint"}}});
_ -> ok
end,
NumBits = get_NumBits(C,StringType),
CharOutTab = get_CharOutTab(C,StringType),
%% NunBits and CharOutTab for chars_encode
emit_enc_k_m_string(SizeC, NumBits, CharOutTab, Value).
emit_enc_k_m_string(0, _NumBits, _CharOutTab, _Value) ->
emit({"[]"});
emit_enc_k_m_string(SizeC, NumBits, CharOutTab, Value) ->
call(per, encode_known_multiplier_string,
[{asis,SizeC},NumBits,{asis,CharOutTab},Value]).
%% copied from run time module
get_CharOutTab(C, StringType) ->
case get_constraint(C,'PermittedAlphabet') of
{'SingleValue',Sv} ->
get_CharTab2(C, StringType, hd(Sv), lists:max(Sv), Sv);
no ->
case StringType of
'IA5String' ->
{0,16#7F,notab};
'VisibleString' ->
get_CharTab2(C, StringType, 16#20, 16#7F, notab);
'PrintableString' ->
Chars = lists:sort(
" '()+,-./0123456789:=?ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"),
get_CharTab2(C, StringType, hd(Chars),
lists:max(Chars), Chars);
'NumericString' ->
get_CharTab2(C, StringType, 16#20, $9, " 0123456789");
'UniversalString' ->
{0,16#FFFFFFFF,notab};
'BMPString' ->
{0,16#FFFF,notab}
end
end.
get_CharTab2(C, StringType, Min, Max, Chars) ->
BitValMax = (1 bsl get_NumBits(C,StringType))-1,
if
Max =< BitValMax ->
{0,Max,notab};
true ->
{Min,Max,create_char_tab(Min,Chars)}
end.
create_char_tab(Min,L) ->
list_to_tuple(create_char_tab(Min,L,0)).
create_char_tab(Min,[Min|T],V) ->
[V|create_char_tab(Min+1,T,V+1)];
create_char_tab(_Min,[],_V) ->
[];
create_char_tab(Min,L,V) ->
[false|create_char_tab(Min+1,L,V)].
get_NumBits(C,StringType) ->
case get_constraint(C,'PermittedAlphabet') of
{'SingleValue',Sv} ->
charbits(length(Sv),aligned);
no ->
case StringType of
'IA5String' ->
charbits(128,aligned); % 16#00..16#7F
'VisibleString' ->
charbits(95,aligned); % 16#20..16#7E
'PrintableString' ->
charbits(74,aligned); % [$\s,$',$(,$),$+,$,,$-,$.,$/,"0123456789",$:,$=,$?,$A..$Z,$a..$z
'NumericString' ->
charbits(11,aligned); % $ ,"0123456789"
'UniversalString' ->
32;
'BMPString' ->
16
end
end.
charbits(NumOfChars,aligned) ->
case charbits(NumOfChars) of
1 -> 1;
2 -> 2;
B when B =< 4 -> 4;
B when B =< 8 -> 8;
B when B =< 16 -> 16;
B when B =< 32 -> 32
end.
charbits(NumOfChars) when NumOfChars =< 2 -> 1;
charbits(NumOfChars) when NumOfChars =< 4 -> 2;
charbits(NumOfChars) when NumOfChars =< 8 -> 3;
charbits(NumOfChars) when NumOfChars =< 16 -> 4;
charbits(NumOfChars) when NumOfChars =< 32 -> 5;
charbits(NumOfChars) when NumOfChars =< 64 -> 6;
charbits(NumOfChars) when NumOfChars =< 128 -> 7;
charbits(NumOfChars) when NumOfChars =< 256 -> 8;
charbits(NumOfChars) when NumOfChars =< 512 -> 9;
charbits(NumOfChars) when NumOfChars =< 1024 -> 10;
charbits(NumOfChars) when NumOfChars =< 2048 -> 11;
charbits(NumOfChars) when NumOfChars =< 4096 -> 12;
charbits(NumOfChars) when NumOfChars =< 8192 -> 13;
charbits(NumOfChars) when NumOfChars =< 16384 -> 14;
charbits(NumOfChars) when NumOfChars =< 32768 -> 15;
charbits(NumOfChars) when NumOfChars =< 65536 -> 16;
charbits(NumOfChars) when is_integer(NumOfChars) ->
16 + charbits1(NumOfChars bsr 16).
charbits1(0) ->
0;
charbits1(NumOfChars) ->
1 + charbits1(NumOfChars bsr 1).
%% copied from run time module
emit_enc_octet_string(Erules, Constraint, Value) ->
case get_constraint(Constraint,'SizeConstraint') of
0 ->
emit({" []"});
1 ->
asn1ct_name:new(tmpval),
emit({" begin",nl}),
emit({" [",{curr,tmpval},"] = ",Value,",",nl}),
emit([" [[10,8],",{curr,tmpval},"]",nl]),
emit(" end");
2 ->
asn1ct_name:new(tmpval),
emit([" begin",nl,
" ",{curr,tmpval}," = ",Value,",",nl,
" case length(",{curr,tmpval},") of",nl,
" 2 ->",nl,
" [[45,16,2]|",{curr,tmpval},"];",nl,
" _ ->",nl,
" exit({error,{value_out_of_bounds,",
{curr,tmpval},"}})",nl,
" end",nl,
" end"]);
Sv when is_integer(Sv), Sv < 256 ->
asn1ct_name:new(tmpval),
asn1ct_name:new(tmplen),
emit([" begin",nl,
" ",{curr,tmpval}," = ",Value,",",nl,
" case length(",{curr,tmpval},") of",nl,
" ",Sv,"=",{curr,tmplen}," ->",nl,
" [20,",{curr,tmplen},"|",{curr,tmpval},"];",nl,
" _ ->",nl,
" exit({error,{value_out_of_bounds,",
{curr,tmpval},"}})",nl,
" end",nl,
" end"]);
Sv when is_integer(Sv),Sv =< 65535 ->
asn1ct_name:new(tmpval),
asn1ct_name:new(tmplen),
emit([" begin",nl,
" ",{curr,tmpval}," = ",Value,",",nl,
" case length(",{curr,tmpval},") of",nl,
" ",Sv,"=",{curr,tmplen}," ->",nl,
" [<<21,",{curr,tmplen},":16>>|",Value,"];",nl,
" _ ->",nl,
" exit({error,{value_out_of_bounds,",
{curr,tmpval},"}})",nl,
" end",nl,
" end"]);
C ->
call(Erules, encode_octet_string,
[{asis,C},false,Value])
end.
emit_enc_integer_case(Value) ->
case get(component_type) of
{true,#'ComponentType'{prop=Prop}} ->
emit({" begin",nl}),
case Prop of
Opt when Opt=='OPTIONAL';
is_tuple(Opt),element(1,Opt)=='DEFAULT' ->
emit({" case ",Value," of",nl}),
ok;
_ ->
emit({" ",{curr,tmpval},"=",Value,",",nl}),
emit({" case ",{curr,tmpval}," of",nl}),
asn1ct_name:new(tmpval)
end;
% asn1ct_name:new(tmpval);
_ ->
emit({" case ",Value," of ",nl})
end.
emit_enc_integer_end_case() ->
case get(component_type) of
{true,_} ->
emit({nl," end"}); % end of begin ... end
_ -> ok
end.
emit_enc_integer_NNL(Erules,C,Value,NNL) ->
EncVal = enc_integer_NNL_cases(Value,NNL),
emit_enc_integer(Erules,C,EncVal).
enc_integer_NNL_cases(Value,NNL) ->
asn1ct_name:new(tmpval),
TmpVal = asn1ct_gen:mk_var(asn1ct_name:curr(tmpval)),
Cases=enc_integer_NNL_cases1(NNL),
lists:flatten(io_lib:format("(case ~s of "++Cases++
"~s when is_atom(~s)->exit({error,{asn1,{namednumber,~s}}});_->~s end)",[Value,TmpVal,TmpVal,TmpVal,Value])).
enc_integer_NNL_cases1([{NNo,No}|Rest]) ->
io_lib:format("~w->~w;",[NNo,No])++enc_integer_NNL_cases1(Rest);
enc_integer_NNL_cases1([]) ->
"".
emit_enc_integer(_Erule,[{'SingleValue',Int}],Value) ->
asn1ct_name:new(tmpval),
emit_enc_integer_case(Value),% emit([" case ",Value," of",nl]),
emit([" ",Int," -> [];",nl]),
emit([" ",{curr,tmpval}," ->",nl]),
emit([" exit({error,{value_out_of_bounds,",{curr,tmpval},"}})",
nl," end",nl]),
emit_enc_integer_end_case();
emit_enc_integer(_Erule,[{_,{Lb,Ub},_Range,{bits,NoBs}}],Value) -> % Range =< 255
asn1ct_name:new(tmpval),
emit_enc_integer_case(Value),
emit([" ",{curr,tmpval}," when ",{curr,tmpval},"=<",Ub,",",
{curr,tmpval},">=",Lb," ->",nl]),
emit([" [10,",NoBs,",",{curr,tmpval},"- ",Lb,"];",nl]),
emit([" ",{curr,tmpval}," ->",nl]),
emit([" exit({error,{value_out_of_bounds,",
{curr,tmpval},"}})",nl," end",nl]),
emit_enc_integer_end_case();
emit_enc_integer(_Erule,[{_,{Lb,Ub},Range,_}],Value) when Range =< 256 ->
asn1ct_name:new(tmpval),
emit_enc_integer_case(Value),
emit([" ",{curr,tmpval}," when ",{curr,tmpval},"=<",Ub,",",
{curr,tmpval},">=",Lb," ->",nl]),
emit([" [20,1,",{curr,tmpval},"- ",Lb,"];",nl]),
emit([" ",{curr,tmpval}," ->",nl]),
emit([" exit({error,{value_out_of_bounds,",{curr,tmpval},"}})",
nl," end",nl]),
emit_enc_integer_end_case();
emit_enc_integer(_Erule,[{_,{Lb,Ub},Range,_}],Value) when Range =< 65536 ->
asn1ct_name:new(tmpval),
emit_enc_integer_case(Value),
emit([" ",{curr,tmpval}," when ",{curr,tmpval},"=<",Ub,",",
{curr,tmpval},">=",Lb," ->",nl]),
emit([" [20,2,<<(",{curr,tmpval},"- ",Lb,"):16>>];",nl]),
emit([" ",{curr,tmpval}," ->",nl]),
emit([" exit({error,{value_out_of_bounds,",{curr,tmpval},"}})",
nl," end",nl]),
emit_enc_integer_end_case();
emit_enc_integer(Erule, [{'ValueRange',{Lb,Ub}=VR}], Value)
when is_integer(Lb), is_integer(Ub) ->
call(Erule, encode_constrained_number, [{asis,VR},Value]);
emit_enc_integer(Erule, C, Value) ->
call(Erule, encode_integer, [{asis,C},Value]).
get_constraint([{Key,V}],Key) ->
V;
get_constraint([],_) ->
no;
get_constraint(C,Key) ->
case lists:keysearch(Key,1,C) of
false ->
no;
{value,{_,V}} ->
V
end.
%% effective_constraint(Type,C)
%% Type = atom()
%% C = [C1,...]
%% C1 = {'SingleValue',SV} | {'ValueRange',VR} | {atom(),term()}
%% SV = integer() | [integer(),...]
%% VR = {Lb,Ub}
%% Lb = 'MIN' | integer()
%% Ub = 'MAX' | integer()
%% Returns a single value if C only has a single value constraint, and no
%% value range constraints, that constrains to a single value, otherwise
%% returns a value range that has the lower bound set to the lowest value
%% of all single values and lower bound values in C and the upper bound to
%% the greatest value.
effective_constraint(integer,[C={{_,_},_}|_Rest]) -> % extension
[C]; %% [C|effective_constraint(integer,Rest)]; XXX what is possible ???
effective_constraint(integer,C) ->
pre_encode(integer, asn1ct_imm:effective_constraint(integer, C));
effective_constraint(bitstring,C) ->
asn1ct_imm:effective_constraint(bitstring, C).
pre_encode(integer,[]) ->
[];
pre_encode(integer,C=[{'SingleValue',_}]) ->
C;
pre_encode(integer,C=[{'ValueRange',VR={Lb,Ub}}]) when is_integer(Lb),is_integer(Ub)->
Range = Ub-Lb+1,
if
Range =< 255 ->
NoBits = no_bits(Range),
[{'ValueRange',VR,Range,{bits,NoBits}}];
Range =< 256 ->
[{'ValueRange',VR,Range,{octets,1}}];
Range =< 65536 ->
[{'ValueRange',VR,Range,{octets,2}}];
true ->
C
end;
pre_encode(integer,C) ->
C.
no_bits(2) -> 1;
no_bits(N) when N=<4 -> 2;
no_bits(N) when N=<8 -> 3;
no_bits(N) when N=<16 -> 4;
no_bits(N) when N=<32 -> 5;
no_bits(N) when N=<64 -> 6;
no_bits(N) when N=<128 -> 7;
no_bits(N) when N=<255 -> 8.
%% 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(_Erules,_Module,Obj) when is_record(Obj,pobjectdef) ->
ok.
gen_encode_objectfields(Erules,ClassName,[{typefield,Name,OptOrMand}|Rest],
ObjName,ObjectFields,ConstrAcc) ->
EmitFuncClause =
fun(V) ->
emit(["'enc_",ObjName,"'(",{asis,Name},
",",V,",_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("Val"),
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"]),
[];
{false,{'DEFAULT',DefaultType}} ->
EmitFuncClause("Val"),
gen_encode_default_call(Erules,ClassName,Name,DefaultType);
{{Name,TypeSpec},_} ->
%% A specified field owerwrites any 'DEFAULT' or
%% 'OPTIONAL' field in the class
EmitFuncClause("Val"),
gen_encode_field_call(Erules,ObjName,Name,TypeSpec)
end,
case more_genfields(Rest) of
true ->
emit([";",nl]);
false ->
emit([".",nl])
end,
gen_encode_objectfields(Erules,ClassName,Rest,ObjName,ObjectFields,
MaybeConstr++ConstrAcc);
gen_encode_objectfields(Erules,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(Erules,ClassName,Rest,ObjName,ObjectFields,ConstrAcc);
gen_encode_objectfields(Erules,ClassName,[_C|Cs],O,OF,Acc) ->
gen_encode_objectfields(Erules,ClassName,Cs,O,OF,Acc);
gen_encode_objectfields(_Erules,_,[],_,_,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;
_ ->
Name = lists:concat(["enc_",TypeDef#typedef.name]),
emit({Name,"(Val) ->",nl}),
Def = TypeDef#typedef.typespec,
InnerType = asn1ct_gen:get_inner(Def#type.def),
asn1ct_gen:gen_encode_constructed(Erules,Name,InnerType,Def),
gen_encode_constr_type(Erules,Rest)
end;
gen_encode_constr_type(_,[]) ->
ok.
gen_encode_field_call(_Erule,_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(Erule,ObjName,FieldName,Type) ->
Def = Type#typedef.typespec,
case Type#typedef.name of
{primitive,bif} ->
gen_encode_prim(Erule,Def,"false",
"Val"),
[];
{constructed,bif} ->
emit({" 'enc_",ObjName,'_',FieldName,
"'(Val)"}),
[Type#typedef{name=list_to_atom(lists:concat([ObjName,'_',FieldName]))}];
{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])),
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(ClassName,[{typefield,Name,OptOrMand}|Rest],
ObjName,ObjectFields,ConstrAcc) ->
EmitFuncClause =
fun(Bytes) ->
emit(["'dec_",ObjName,"'(",{asis,Name},",",Bytes,
",_,_RestPrimFieldName) ->",nl])
end,
% emit(["'dec_",ObjName,"'(",{asis,Name},
% ", Bytes, _, 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("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]))}];
{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])),
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)
end,
gen_decode_constr_type(Erules,Rest);
gen_decode_constr_type(_,[]) ->
ok.
%% 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(Erule,ObjSetName,UniqueFName,Set,ClassName,ClassDef)->
ClassFields = (ClassDef#classdef.typespec)#objectclass.fields,
InternalFuncs=
gen_objset_enc(Erule,ObjSetName,UniqueFName,Set,ClassName,
ClassFields,1,[]),
gen_objset_dec(ObjSetName,UniqueFName,Set,ClassName,ClassFields,1),
gen_internal_funcs(Erule,InternalFuncs).
gen_objset_enc(_Erule,_,{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"}),
{[],NthObj};
{ModName,Name} ->
emit_ext_encfun(ModName,Name),
{[],NthObj};
_ ->
emit({" fun 'enc_",ObjName,"'/3"}),
{[],NthObj}
end,
emit({";",nl}),
gen_objset_enc(Erule, ObjSetName, UniqueName, T, ClName, ClFields,
NewNthObj, InternalFunc++Acc);
gen_objset_enc(_Erule,ObjSetName,_UniqueName,['EXTENSIONMARK'],_ClName,
_ClFields,_NthObj,Acc) ->
emit({"'getenc_",ObjSetName,"'(_, _) ->",nl}),
emit({indent(3),"fun(_, Val, _) ->",nl}),
emit({indent(6),"BinVal = if",nl}),
emit({indent(9),"is_list(Val) -> list_to_binary(Val);",nl}),
emit({indent(9),"true -> Val",nl}),
emit({indent(6),"end,",nl}),
emit({indent(6),"Size = byte_size(BinVal),",nl}),
emit({indent(6),"if",nl}),
emit({indent(9),"Size < 256 ->",nl}),
emit({indent(12),"[20,Size,BinVal];",nl}),
emit({indent(9),"true ->",nl}),
emit({indent(12),"[21,<<Size:16>>,Val]",nl}),
emit({indent(6),"end",nl}),
emit({indent(3),"end.",nl,nl}),
Acc;
gen_objset_enc(_Erule, 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,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(Erule,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(Erule,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(Erule,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 ->
emit([indent(3),"fun(Type, Val, _) ->",nl,
indent(6),"case Type of",nl,
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"]),
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj,[])
end;
gen_inlined_enc_funs(Erule,Fields,[_|Rest],ObjSetName,NthObj) ->
gen_inlined_enc_funs(Erule,Fields,Rest,ObjSetName,NthObj);
gen_inlined_enc_funs(_Erule,_,[],_,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(Erule,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(Erule,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 ->
emit([";",nl,
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"]),
{Acc,0}
end,
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj+NAdd,Acc2);
gen_inlined_enc_funs1(Erule,Fields,[_|Rest],ObjSetName,NthObj,Acc)->
gen_inlined_enc_funs1(Erule,Fields,Rest,ObjSetName,NthObj,Acc);
gen_inlined_enc_funs1(_Erule,_,[],_,NthObj,Acc) ->
emit({nl,indent(6),"end",nl}),
emit({indent(3),"end"}),
{Acc,NthObj}.
emit_inner_of_fun(Erule,TDef=#typedef{name={ExtMod,Name},typespec=Type},
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,_) 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(Erule,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;
_ ->
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,"'}"]);
_ ->
emit({" fun 'dec_",ObjName,"'/4"})
end,
emit([";",nl]),
emit_default_getdec(ObjSetName,UniqueName),
emit({".",nl,nl}),
ok;
gen_objset_dec(ObjSetName,_,['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(_,_,[],_,_,_) ->
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, List, ObjSetName, NthObj0) ->
emit([indent(3),"fun(Type, Val, _, _) ->",nl,
indent(6),"case Type of",nl]),
NthObj = gen_inlined_dec_funs1(Fields, List, ObjSetName, "", NthObj0),
emit([nl,indent(6),"end",nl,
indent(3),"end"]),
NthObj.
gen_inlined_dec_funs1(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(Type, InternalDefFunName);
{_,#typedef{}=Type} ->
emit([indent(9),{asis,Name}," ->",nl]),
emit_inner_of_decfun(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(Fields, Rest, ObjSetName, Sep, NthObj+N);
gen_inlined_dec_funs1(Fields, [_|Rest], ObjSetName, Sep, NthObj) ->
gen_inlined_dec_funs1(Fields, Rest, ObjSetName, Sep, NthObj);
gen_inlined_dec_funs1(_, [], _, _, NthObj) -> 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(per, 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(_Erules,[]) ->
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) ->
asn1ct_gen_per:gen_dec_prim(Erules, Att, BytesVar).
%% 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).
