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-rw-r--r--lib/asn1/src/asn1ct_constructed_per.erl38
1 files changed, 37 insertions, 1 deletions
diff --git a/lib/asn1/src/asn1ct_constructed_per.erl b/lib/asn1/src/asn1ct_constructed_per.erl
index c1b6aa5713..72c8a3fd9a 100644
--- a/lib/asn1/src/asn1ct_constructed_per.erl
+++ b/lib/asn1/src/asn1ct_constructed_per.erl
@@ -469,7 +469,8 @@ gen_decode_sof(Erules,Typename,SeqOrSetOf,D) when is_record(D,type) ->
_ ->
""
end,
- emit({nl,"{Num,Bytes1} = ?RT_PER:decode_length(Bytes,",{asis,SizeConstraint},"),",nl}),
+ gen_decode_length(SizeConstraint,
+ is_optimized(Erules)),
emit({"'dec_",asn1ct_gen:list2name(Typename),
"_components'(Num, Bytes1, telltype",ObjFun,", []).",nl}),
NewComponentType =
@@ -480,6 +481,41 @@ gen_decode_sof(Erules,Typename,SeqOrSetOf,D) when is_record(D,type) ->
end,
gen_decode_sof_components(Erules,Typename,SeqOrSetOf,NewComponentType).
+%% Logic copied from asn1_per_bin_rt2ct:decode_constrained_number
+gen_decode_length({Lb,Ub},true) when Ub =< 65535, Lb >= 0 ->
+ Range = Ub - Lb + 1,
+ Call = if
+ Range == 1 ->
+ "{0,Bytes}";
+ Range == 2 ->
+ "?RT_PER:getbits(Bytes,1)";
+ Range =< 4 ->
+ "?RT_PER:getbits(Bytes,2)";
+ Range =< 8 ->
+ "?RT_PER:getbits(Bytes,3)";
+ Range =< 16 ->
+ "?RT_PER:getbits(Bytes,4)";
+ Range =< 32 ->
+ "?RT_PER:getbits(Bytes,5)";
+ Range =< 64 ->
+ "?RT_PER:getbits(Bytes,6)";
+ Range =< 128 ->
+ "?RT_PER:getbits(Bytes,7)";
+ Range =< 255 ->
+ "?RT_PER:getbits(Bytes,8)";
+ Range =< 256 ->
+ "?RT_PER:getoctets(Bytes,1)";
+ Range =< 65536 ->
+ "?RT_PER:getoctets(Bytes,2)";
+ true ->
+ ["exit({not_supported,{integer_range,",Range,"}}"]
+ end,
+ emit({nl,"{Val,Remain} = ",Call,",",nl}),
+ emit({nl,"{Num,Bytes1} = {Val+",Lb,",Remain},",nl});
+gen_decode_length(SizeConstraint,_) ->
+ emit({nl,"{Num,Bytes1} = ?RT_PER:decode_length(Bytes,",
+ {asis,SizeConstraint},"),",nl}).
+
gen_encode_sof_components(Erule,Typename,SeqOrSetOf,Cont) ->
{ObjFun,ObjFun_Var} =
case Cont#type.tablecinf of