diff options
Diffstat (limited to 'lib/asn1/src')
| -rw-r--r-- | lib/asn1/src/asn1ct_check.erl | 105 | ||||
| -rw-r--r-- | lib/asn1/src/asn1ct_constructed_ber_bin_v2.erl | 3 | ||||
| -rw-r--r-- | lib/asn1/src/asn1ct_constructed_per.erl | 71 | ||||
| -rw-r--r-- | lib/asn1/src/asn1ct_gen.erl | 44 | ||||
| -rw-r--r-- | lib/asn1/src/asn1ct_imm.erl | 23 | ||||
| -rw-r--r-- | lib/asn1/src/asn1rtt_check.erl | 91 | ||||
| -rw-r--r-- | lib/asn1/src/asn1rtt_per_common.erl | 41 |
7 files changed, 246 insertions, 132 deletions
diff --git a/lib/asn1/src/asn1ct_check.erl b/lib/asn1/src/asn1ct_check.erl index eddcda0018..04227fd23b 100644 --- a/lib/asn1/src/asn1ct_check.erl +++ b/lib/asn1/src/asn1ct_check.erl @@ -2534,89 +2534,54 @@ normalize_integer(S,Int=#'Externalvaluereference'{value=Name},Type) -> normalize_integer(_,Int,_) -> exit({'Unknown INTEGER value',Int}). -normalize_bitstring(S,Value,Type)-> - %% There are four different Erlang formats of BIT STRING: - %% 1 - a list of ones and zeros. - %% 2 - a list of atoms. - %% 3 - as an integer, for instance in hexadecimal form. - %% 4 - as a tuple {Unused, Binary} where Unused is an integer - %% and tells how many bits of Binary are unused. - %% - %% normalize_bitstring/3 transforms Value according to: - %% A to 3, - %% B to 1, - %% C to 1 or 3 - %% D to 2, - %% Value can be on format: - %% A - {hstring, String}, where String is a hexadecimal string. - %% B - {bstring, String}, where String is a string on bit format - %% C - #'Externalvaluereference'{value=V}, where V is a defined value - %% D - list of #'Externalvaluereference', where each value component - %% is an identifier corresponing to NamedBits in Type. - %% E - list of ones and zeros, if Value already is normalized. +%% normalize_bitstring(S, Value, Type) -> bitstring() +%% Convert a literal value for a BIT STRING to an Erlang bit string. +%% +normalize_bitstring(S, Value, Type)-> case Value of {hstring,String} when is_list(String) -> - hstring_to_int(String); + hstring_to_bitstring(String); {bstring,String} when is_list(String) -> - bstring_to_bitlist(String); - Rec when is_record(Rec,'Externalvaluereference') -> - get_normalized_value(S,Value,Type, - fun normalize_bitstring/3,[]); + bstring_to_bitstring(String); + #'Externalvaluereference'{} -> + get_normalized_value(S, Value, Type, + fun normalize_bitstring/3, []); RecList when is_list(RecList) -> - case Type of - NBL when is_list(NBL) -> - F = fun(#'Externalvaluereference'{value=Name}) -> - case lists:keysearch(Name,1,NBL) of - {value,{Name,_}} -> - Name; - Other -> - throw({error,Other}) - end; - (I) when I =:= 1; I =:= 0 -> - I; - (Other) -> - throw({error,Other}) - end, - case catch lists:map(F,RecList) of - {error,Reason} -> - asn1ct:warning("default value not " - "compatible with type definition ~p~n", - [Reason],S, - "default value not " - "compatible with type definition"), - Value; - NewList -> - NewList - end; - _ -> + F = fun(#'Externalvaluereference'{value=Name}) -> + case lists:keymember(Name, 1, Type) of + true -> Name; + false -> throw({error,false}) + end; + (Name) when is_atom(Name) -> + %% Already normalized. + Name; + (Other) -> + throw({error,Other}) + end, + try + lists:map(F, RecList) + catch + throw:{error,Reason} -> asn1ct:warning("default value not " "compatible with type definition ~p~n", - [RecList],S, + [Reason],S, "default value not " "compatible with type definition"), Value end; - {Name,String} when is_atom(Name) -> - normalize_bitstring(S,String,Type); - Other -> - asn1ct:warning("illegal default value ~p~n",[Other],S, - "illegal default value"), - Value + Bs when is_bitstring(Bs) -> + %% Already normalized. + Bs end. -hstring_to_int(L) when is_list(L) -> - hstring_to_int(L,0). -hstring_to_int([H|T],Acc) when H >= $A, H =< $F -> - hstring_to_int(T,(Acc bsl 4) + (H - $A + 10) ) ; -hstring_to_int([H|T],Acc) when H >= $0, H =< $9 -> - hstring_to_int(T,(Acc bsl 4) + (H - $0)); -hstring_to_int([],Acc) -> - Acc. +hstring_to_bitstring(L) -> + << <<(hex_to_int(D)):4>> || D <- L >>. -bstring_to_bitlist([H|T]) when H == $0; H == $1 -> - [H - $0 | bstring_to_bitlist(T)]; -bstring_to_bitlist([]) -> - []. +bstring_to_bitstring(L) -> + << <<(D-$0):1>> || D <- L >>. + +hex_to_int(D) when $0 =< D, D =< $9 -> D - $0; +hex_to_int(D) when $A =< D, D =< $F -> D - ($A - 10). %% normalize_octetstring/1 changes representation of input Value to a %% list of octets. diff --git a/lib/asn1/src/asn1ct_constructed_ber_bin_v2.erl b/lib/asn1/src/asn1ct_constructed_ber_bin_v2.erl index 8359b81b33..a38da8bcc2 100644 --- a/lib/asn1/src/asn1ct_constructed_ber_bin_v2.erl +++ b/lib/asn1/src/asn1ct_constructed_ber_bin_v2.erl @@ -1155,7 +1155,8 @@ gen_dec_line(Erules,TopType,Cname,CTags,Type,OptOrMand,DecObjInf) -> emit([indent(4),"_ ->",nl]), case OptOrMand of - {'DEFAULT', Def} -> + {'DEFAULT', Def0} -> + Def = asn1ct_gen:conform_value(Type, Def0), emit([indent(8),"{",{asis,Def},",",{prev,tlv},"}",nl]); 'OPTIONAL' -> emit([indent(8),"{ asn1_NOVALUE, ",{prev,tlv},"}",nl]) diff --git a/lib/asn1/src/asn1ct_constructed_per.erl b/lib/asn1/src/asn1ct_constructed_per.erl index 8d4afc0a0b..4672f7edd3 100644 --- a/lib/asn1/src/asn1ct_constructed_per.erl +++ b/lib/asn1/src/asn1ct_constructed_per.erl @@ -770,8 +770,10 @@ optionals(L) -> optionals(L,[],2). optionals([#'ComponentType'{prop='OPTIONAL'}|Rest], Acc, Pos) -> optionals(Rest, [Pos|Acc], Pos+1); -optionals([#'ComponentType'{prop={'DEFAULT',Val}}|Rest], Acc, Pos) -> - optionals(Rest, [{Pos,Val}|Acc], Pos+1); +optionals([#'ComponentType'{typespec=T,prop={'DEFAULT',Val}}|Rest], + Acc, Pos) -> + Vals = def_values(T, Val), + optionals(Rest, [{Pos,Vals}|Acc], Pos+1); optionals([#'ComponentType'{}|Rest], Acc, Pos) -> optionals(Rest, Acc, Pos+1); optionals([], Acc, _) -> @@ -888,7 +890,8 @@ gen_enc_components_call1(Erule,TopType, optional -> asn1ct_imm:enc_absent(Element, [asn1_NOVALUE], Imm1); {default,Def} -> - asn1ct_imm:enc_absent(Element, [asn1_DEFAULT,Def], Imm1) + DefValues = def_values(Type, Def), + asn1ct_imm:enc_absent(Element, DefValues, Imm1) end, Imm = case Imm2 of [] -> []; @@ -899,6 +902,38 @@ gen_enc_components_call1(_Erule,_TopType,[],Pos,_,_, Acc) -> ImmList = lists:reverse(Acc), {ImmList,Pos}. +def_values(#type{def=#'Externaltypereference'{module=Mod,type=Type}}, Def) -> + #typedef{typespec=T} = asn1_db:dbget(Mod, Type), + def_values(T, Def); +def_values(#type{def={'BIT STRING',[]}}, Bs) when is_bitstring(Bs) -> + ListBs = [B || <<B:1>> <= Bs], + IntBs = lists:foldl(fun(B, A) -> + (A bsl 1) bor B + end, 0, lists:reverse(ListBs)), + Sz = bit_size(Bs), + Compact = case 8 - Sz rem 8 of + 8 -> + {0,Bs}; + Unused -> + {Unused,<<Bs:Sz/bits,0:Unused>>} + end, + [asn1_DEFAULT,Bs,Compact,ListBs,IntBs]; +def_values(#type{def={'BIT STRING',[_|_]=Ns}}, List) when is_list(List) -> + Bs = asn1ct_gen:named_bitstring_value(List, Ns), + ListBs = [B || <<B:1>> <= Bs], + IntBs = lists:foldl(fun(B, A) -> + (A bsl 1) bor B + end, 0, lists:reverse(ListBs)), + Args = [List,Bs,ListBs,IntBs], + {call,per_common,is_default_bitstring,Args}; +def_values(#type{def={'INTEGER',Ns}}, Def) -> + [asn1_DEFAULT,Def|case lists:keyfind(Def, 2, Ns) of + false -> []; + {Val,Def} -> [Val] + end]; +def_values(_, Def) -> + [asn1_DEFAULT,Def]. + gen_enc_line_imm(Erule, TopType, Cname, Type, Element, DynamicEnc, Ext) -> Imm0 = gen_enc_line_imm_1(Erule, TopType, Cname, Type, Element, DynamicEnc), @@ -1207,7 +1242,8 @@ gen_dec_comp_call(Comp, Erule, TopType, Tpos, OptTable, DecInfObj, comp_call_pre_post(noext, mandatory, _, _, _, _, _, _) -> {[],[]}; -comp_call_pre_post(noext, Prop, _, _, TextPos, OptTable, NumOptionals, Ext) -> +comp_call_pre_post(noext, Prop, _, Type, TextPos, + OptTable, NumOptionals, Ext) -> %% OPTIONAL or DEFAULT OptPos = get_optionality_pos(TextPos, OptTable), Element = case NumOptionals - OptPos of @@ -1225,7 +1261,7 @@ comp_call_pre_post(noext, Prop, _, _, TextPos, OptTable, NumOptionals, Ext) -> emit([";",nl, "0 ->",nl, "{"]), - gen_dec_component_no_val(Ext, Prop), + gen_dec_component_no_val(Ext, Type, Prop), emit([",",{curr,bytes},"}",nl, "end"]), St @@ -1247,10 +1283,10 @@ comp_call_pre_post({ext,_,_}, Prop, Pos, Type, _, _, _, Ext) -> components=ExtGroupCompList2}} when is_integer(Number2)-> emit("{extAddGroup,"), - gen_dec_extaddGroup_no_val(Ext, ExtGroupCompList2), + gen_dec_extaddGroup_no_val(Ext, Type, ExtGroupCompList2), emit("}"); _ -> - gen_dec_component_no_val(Ext, Prop) + gen_dec_component_no_val(Ext, Type, Prop) end, emit([",",{curr,bytes},"}",nl, "end"]), @@ -1265,21 +1301,22 @@ is_mandatory_predef_tab_c(_, _, {"got objfun through args","ObjFun"}) -> is_mandatory_predef_tab_c(_,_,_) -> true. -gen_dec_extaddGroup_no_val(Ext,[#'ComponentType'{prop=Prop}])-> - gen_dec_component_no_val(Ext,Prop), +gen_dec_extaddGroup_no_val(Ext, Type, [#'ComponentType'{prop=Prop}])-> + gen_dec_component_no_val(Ext, Type, Prop), ok; -gen_dec_extaddGroup_no_val(Ext,[#'ComponentType'{prop=Prop}|Rest])-> - gen_dec_component_no_val(Ext,Prop), - emit({","}), - gen_dec_extaddGroup_no_val(Ext,Rest); -gen_dec_extaddGroup_no_val(_, []) -> +gen_dec_extaddGroup_no_val(Ext, Type, [#'ComponentType'{prop=Prop}|Rest])-> + gen_dec_component_no_val(Ext, Type, Prop), + emit(","), + gen_dec_extaddGroup_no_val(Ext, Type, Rest); +gen_dec_extaddGroup_no_val(_, _, []) -> ok. -gen_dec_component_no_val(_,{'DEFAULT',DefVal}) -> +gen_dec_component_no_val(_, Type, {'DEFAULT',DefVal0}) -> + DefVal = asn1ct_gen:conform_value(Type, DefVal0), emit([{asis,DefVal}]); -gen_dec_component_no_val(_,'OPTIONAL') -> +gen_dec_component_no_val(_, _, 'OPTIONAL') -> emit({"asn1_NOVALUE"}); -gen_dec_component_no_val({ext,_,_},mandatory) -> +gen_dec_component_no_val({ext,_,_}, _, mandatory) -> emit({"asn1_NOVALUE"}). diff --git a/lib/asn1/src/asn1ct_gen.erl b/lib/asn1/src/asn1ct_gen.erl index 3452d29085..30d337635b 100644 --- a/lib/asn1/src/asn1ct_gen.erl +++ b/lib/asn1/src/asn1ct_gen.erl @@ -33,7 +33,9 @@ insert_once/2, ct_gen_module/1, index2suffix/1, - get_record_name_prefix/0]). + get_record_name_prefix/0, + conform_value/2, + named_bitstring_value/2]). -export([pgen/5, mk_var/1, un_hyphen_var/1]). @@ -1485,8 +1487,14 @@ gen_prim_check_call(PrimType, Default, Element, Type) -> end, check_call(check_int, [Default,Element,{asis,NNL}]); 'BIT STRING' -> - {_,NBL} = Type#type.def, - check_call(check_bitstring, [Default,Element,{asis,NBL}]); + case Type#type.def of + {_,[]} -> + check_call(check_bitstring, + [Default,Element]); + {_,[_|_]=NBL} -> + check_call(check_named_bitstring, + [Default,Element,{asis,NBL}]) + end; 'OCTET STRING' -> check_call(check_octetstring, [Default,Element]); 'NULL' -> @@ -1640,9 +1648,33 @@ unify_if_string(PrimType) -> Other -> Other end. - - - +conform_value(#type{def={'BIT STRING',[]}}, Bs) -> + case asn1ct:get_bit_string_format() of + compact when is_binary(Bs) -> + {0,Bs}; + compact when is_bitstring(Bs) -> + Sz = bit_size(Bs), + Unused = 8 - bit_size(Bs), + {Unused,<<Bs:Sz/bits,0:Unused>>}; + legacy -> + [B || <<B:1>> <= Bs]; + bitstring when is_bitstring(Bs) -> + Bs + end; +conform_value(_, Value) -> Value. + +named_bitstring_value(List, Names) -> + Int = lists:foldl(fun(N, A) -> + {N,Pos} = lists:keyfind(N, 1, Names), + A bor (1 bsl Pos) + end, 0, List), + named_bitstring_value_1(<<>>, Int). + +named_bitstring_value_1(Bs, 0) -> + Bs; +named_bitstring_value_1(Bs, Int) -> + B = Int band 1, + named_bitstring_value_1(<<Bs/bitstring,B:1>>, Int bsr 1). get_inner(A) when is_atom(A) -> A; get_inner(Ext) when is_record(Ext,'Externaltypereference') -> Ext; diff --git a/lib/asn1/src/asn1ct_imm.erl b/lib/asn1/src/asn1ct_imm.erl index 892178f61b..dfa4ce0d6b 100644 --- a/lib/asn1/src/asn1ct_imm.erl +++ b/lib/asn1/src/asn1ct_imm.erl @@ -319,14 +319,22 @@ per_enc_extensions(Val0, Pos0, NumBits, Aligned) when NumBits > 0 -> {'cond',[[{eq,Bitmap,0}], ['_'|Length ++ PutBits]],{var,"Extensions"}}]. -per_enc_optional(Val0, {Pos,Def}, _Aligned) when is_integer(Pos) -> +per_enc_optional(Val0, {Pos,DefVals}, _Aligned) when is_integer(Pos), + is_list(DefVals) -> Val1 = lists:concat(["element(",Pos,", ",Val0,")"]), {B,[Val]} = mk_vars(Val1, []), Zero = {put_bits,0,1,[1]}, One = {put_bits,1,1,[1]}, - B++[{'cond',[[{eq,Val,asn1_DEFAULT},Zero], - [{eq,Val,Def},Zero], - ['_',One]]}]; + B++[{'cond', + [[{eq,Val,DefVal},Zero] || DefVal <- DefVals] ++ [['_',One]]}]; +per_enc_optional(Val0, {Pos,{call,M,F,A}}, _Aligned) when is_integer(Pos) -> + Val1 = lists:concat(["element(",Pos,", ",Val0,")"]), + {B,[Val,Tmp]} = mk_vars(Val1, [tmp]), + Zero = {put_bits,0,1,[1]}, + One = {put_bits,1,1,[1]}, + B++[{call,M,F,[Val|A],Tmp}, + {'cond', + [[{eq,Tmp,true},Zero],['_',One]]}]; per_enc_optional(Val0, Pos, _Aligned) when is_integer(Pos) -> Val1 = lists:concat(["element(",Pos,", ",Val0,")"]), {B,[Val]} = mk_vars(Val1, []), @@ -352,7 +360,12 @@ per_enc_sof(Val0, Constraint, ElementVar, ElementImm, Aligned) -> PreBlock ++ EncLen ++ Lc end. -enc_absent(Val0, AbsVals, Body) -> +enc_absent(Val0, {call,M,F,A}, Body) -> + {B,[Var,Tmp]} = mk_vars(Val0, [tmp]), + B++[{call,M,F,[Var|A],Tmp}, + {'cond', + [[{eq,Tmp,true}],['_'|Body]]}]; +enc_absent(Val0, AbsVals, Body) when is_list(AbsVals) -> {B,[Var]} = mk_vars(Val0, []), Cs = [[{eq,Var,Aval}] || Aval <- AbsVals] ++ [['_'|Body]], B++build_cond(Cs). diff --git a/lib/asn1/src/asn1rtt_check.erl b/lib/asn1/src/asn1rtt_check.erl index e78b65a8fb..be4f9c8bff 100644 --- a/lib/asn1/src/asn1rtt_check.erl +++ b/lib/asn1/src/asn1rtt_check.erl @@ -20,7 +20,7 @@ -export([check_bool/2, check_int/3, - check_bitstring/3, + check_bitstring/2,check_named_bitstring/3, check_octetstring/2, check_null/2, check_objectidentifier/2, @@ -50,31 +50,54 @@ check_int(DefValue, Value, NNL) when is_atom(Value) -> check_int(DefaultValue, _Value, _) -> throw({error,DefaultValue}). -%% Two equal lists or integers -check_bitstring(_, asn1_DEFAULT, _) -> +%% check_bitstring(Default, UserBitstring) -> true|false +%% Default = bitstring() +%% UserBitstring = integeger() | list(0|1) | {Unused,binary()} | bitstring() +check_bitstring(_, asn1_DEFAULT) -> true; -check_bitstring(V, V, _) -> - true; -%% Default value as a list of 1 and 0 and user value as an integer -check_bitstring(L=[H|T], Int, _) when is_integer(Int), is_integer(H) -> - case bit_list_to_int(L, length(T)) of - Int -> true; - _ -> throw({error,L,Int}) +check_bitstring(DefVal, {Unused,Binary}) -> + %% User value in compact format. + Sz = bit_size(Binary) - Unused, + <<Val:Sz/bitstring,_:Unused>> = Binary, + check_bitstring(DefVal, Val); +check_bitstring(DefVal, Val) when is_bitstring(Val) -> + case Val =:= DefVal of + false -> throw(error); + true -> true end; -%% Default value as an integer, val as list -check_bitstring(Int, Val, NBL) when is_integer(Int), is_list(Val) -> - BL = int_to_bit_list(Int, [], length(Val)), - check_bitstring(BL, Val, NBL); +check_bitstring(Def, Val) when is_list(Val) -> + check_bitstring_list(Def, Val); +check_bitstring(Def, Val) when is_integer(Val) -> + check_bitstring_integer(Def, Val). + +check_bitstring_list(<<H:1,T1/bitstring>>, [H|T2]) -> + check_bitstring_list(T1, T2); +check_bitstring_list(<<>>, []) -> + true; +check_bitstring_list(_, _) -> + throw(error). + +check_bitstring_integer(<<H:1,T1/bitstring>>, Int) when H =:= Int band 1 -> + check_bitstring_integer(T1, Int bsr 1); +check_bitstring_integer(<<>>, 0) -> + true; +check_bitstring_integer(_, _) -> + throw(error). + +check_named_bitstring(_, asn1_DEFAULT, _) -> + true; +check_named_bitstring(V, V, _) -> + true; %% Default value and user value as lists of ones and zeros -check_bitstring(L1=[H1|_T1], L2=[H2|_T2], NBL=[_H|_T]) when is_integer(H1), is_integer(H2) -> +check_named_bitstring(L1=[H1|_T1], L2=[H2|_T2], NBL=[_H|_T]) when is_integer(H1), is_integer(H2) -> L2new = remove_trailing_zeros(L2), - check_bitstring(L1, L2new, NBL); + check_named_bitstring(L1, L2new, NBL); %% Default value as a list of 1 and 0 and user value as a list of atoms -check_bitstring(L1=[H1|_T1], L2=[H2|_T2], NBL) when is_integer(H1), is_atom(H2) -> +check_named_bitstring(L1=[H1|_T1], L2=[H2|_T2], NBL) when is_integer(H1), is_atom(H2) -> L3 = bit_list_to_nbl(L1, NBL, 0, []), - check_bitstring(L3, L2, NBL); + check_named_bitstring(L3, L2, NBL); %% Both default value and user value as a list of atoms -check_bitstring(L1=[H1|T1], L2=[H2|_T2], _) +check_named_bitstring(L1=[H1|T1], L2=[H2|_T2], _) when is_atom(H1), is_atom(H2), length(L1) =:= length(L2) -> case lists:member(H1, L2) of true -> @@ -82,27 +105,29 @@ check_bitstring(L1=[H1|T1], L2=[H2|_T2], _) false -> throw({error,L2}) end; %% Default value as a list of atoms and user value as a list of 1 and 0 -check_bitstring(L1=[H1|_T1], L2=[H2|_T2], NBL) when is_atom(H1), is_integer(H2) -> +check_named_bitstring(L1=[H1|_T1], L2=[H2|_T2], NBL) when is_atom(H1), is_integer(H2) -> L3 = bit_list_to_nbl(L2, NBL, 0, []), - check_bitstring(L1, L3, NBL); + check_named_bitstring(L1, L3, NBL); %% User value in compact format -check_bitstring(DefVal,CBS={_,_}, NBL) -> +check_named_bitstring(DefVal,CBS={_,_}, NBL) -> NewVal = cbs_to_bit_list(CBS), - check_bitstring(DefVal, NewVal, NBL); -check_bitstring(DV, V, _) -> + check_named_bitstring(DefVal, NewVal, NBL); +%% User value as a binary +check_named_bitstring(DefVal, CBS, NBL) when is_binary(CBS) -> + NewVal = cbs_to_bit_list({0,CBS}), + check_named_bitstring(DefVal, NewVal, NBL); +%% User value as a bitstring +check_named_bitstring(DefVal, CBS, NBL) when is_bitstring(CBS) -> + BitSize = bit_size(CBS), + Unused = 8 - (BitSize band 7), + NewVal = cbs_to_bit_list({Unused,<<CBS:BitSize/bits,0:Unused>>}), + check_named_bitstring(DefVal, NewVal, NBL); +check_named_bitstring(DV, V, _) -> throw({error,DV,V}). - -bit_list_to_int([0|Bs], ShL)-> - bit_list_to_int(Bs, ShL-1) + 0; -bit_list_to_int([1|Bs], ShL) -> - bit_list_to_int(Bs, ShL-1) + (1 bsl ShL); -bit_list_to_int([], _) -> - 0. - int_to_bit_list(0, Acc, 0) -> Acc; -int_to_bit_list(Int, Acc, Len) -> +int_to_bit_list(Int, Acc, Len) when Len > 0 -> int_to_bit_list(Int bsr 1, [Int band 1|Acc], Len - 1). bit_list_to_nbl([0|T], NBL, Pos, Acc) -> diff --git a/lib/asn1/src/asn1rtt_per_common.erl b/lib/asn1/src/asn1rtt_per_common.erl index 9e9fd87ec3..3309e6a4ca 100644 --- a/lib/asn1/src/asn1rtt_per_common.erl +++ b/lib/asn1/src/asn1rtt_per_common.erl @@ -37,6 +37,7 @@ bitstring_from_positions/1,bitstring_from_positions/2, to_bitstring/1,to_bitstring/2, to_named_bitstring/1,to_named_bitstring/2, + is_default_bitstring/5, extension_bitmap/3]). -define('16K',16384). @@ -271,6 +272,36 @@ to_named_bitstring(Val, Lb) -> %% for correctness, not speed. adjust_trailing_zeroes(to_bitstring(Val), Lb). +is_default_bitstring(asn1_DEFAULT, _, _, _, _) -> + true; +is_default_bitstring({Unused,Bin}, V0, V1, V2, V3) when is_integer(Unused) -> + %% Convert compact bitstring to a bitstring. + Sz = bit_size(Bin) - Unused, + <<Bs:Sz/bitstring,_:Unused>> = Bin, + is_default_bitstring(Bs, V0, V1, V2, V3); +is_default_bitstring(Named, Named, _, _, _) -> + true; +is_default_bitstring(Bs, _, Bs, _, _) -> + true; +is_default_bitstring(List, _, _, List, _) -> + true; +is_default_bitstring(Int, _, _, _, Int) -> + true; +is_default_bitstring(Val, _, Def, _, _) when is_bitstring(Val) -> + Sz = bit_size(Def), + case Val of + <<Def:Sz/bitstring,T/bitstring>> -> + NumZeroes = bit_size(T), + case T of + <<0:NumZeroes>> -> true; + _ -> false + end; + _ -> + false + end; +is_default_bitstring(Val, _, _, List, _) when is_list(Val) -> + is_default_bitstring_list(List, Val); +is_default_bitstring(_, _, _, _, _) -> false. extension_bitmap(Val, Pos, Limit) -> extension_bitmap(Val, Pos, Limit, 0). @@ -447,6 +478,16 @@ ntz(Byte) -> 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0}, element(Byte+1, T). +is_default_bitstring_list([H|Def], [H|Val]) -> + is_default_bitstring_list(Def, Val); +is_default_bitstring_list([], []) -> + true; +is_default_bitstring_list([], [_|_]=Val) -> + lists:all(fun(0) -> true; + (_) -> false + end, Val); +is_default_bitstring_list(_, _) -> false. + extension_bitmap(_Val, Pos, Limit, Acc) when Pos >= Limit -> Acc; extension_bitmap(Val, Pos, Limit, Acc) -> |