diff options
Diffstat (limited to 'lib/asn1/src/asn1ct_imm.erl')
| -rw-r--r-- | lib/asn1/src/asn1ct_imm.erl | 42 |
1 files changed, 29 insertions, 13 deletions
diff --git a/lib/asn1/src/asn1ct_imm.erl b/lib/asn1/src/asn1ct_imm.erl index bdd14871d1..5bf69e9294 100644 --- a/lib/asn1/src/asn1ct_imm.erl +++ b/lib/asn1/src/asn1ct_imm.erl @@ -499,6 +499,8 @@ per_dec_enumerated_fix_list([], Tail, _) -> Tail. per_dec_integer_1([{'SingleValue',Value}], _Aligned) -> {value,Value}; +per_dec_integer_1([{'ValueRange',{'MIN',_}}], Aligned) -> + per_dec_unconstrained(Aligned); per_dec_integer_1([{'ValueRange',{Lb,'MAX'}}], Aligned) when is_integer(Lb) -> per_decode_semi_constrained(Lb, Aligned); per_dec_integer_1([{'ValueRange',{Lb,Ub}}], Aligned) when is_integer(Lb), @@ -1094,6 +1096,9 @@ per_enc_integer_1(Val0, [Constr], Aligned) -> per_enc_integer_2(Val, {'SingleValue',Sv}, Aligned) when is_integer(Sv) -> per_enc_constrained(Val, Sv, Sv, Aligned); +per_enc_integer_2(Val, {'ValueRange',{'MIN',Ub}}, Aligned) + when is_integer(Ub) -> + {[],{lt,Val,Ub+1},per_enc_unconstrained(Val, Aligned)}; per_enc_integer_2(Val0, {'ValueRange',{Lb,'MAX'}}, Aligned) when is_integer(Lb) -> {Prefix,Val} = sub_lb(Val0, Lb), @@ -1580,7 +1585,7 @@ do_combine_put_bits(_, _, _) -> throw(impossible). debit(Budget0, Alternatives) -> - case Budget0 - log2(Alternatives) of + case Budget0 - math:log2(Alternatives) of Budget when Budget > 0.0 -> Budget; _ -> @@ -1593,8 +1598,6 @@ num_clauses([_|T], N) -> num_clauses(T, N+1); num_clauses([], N) -> N. -log2(N) -> - math:log(N) / math:log(2.0). collect_put_bits(Imm) -> lists:splitwith(fun({put_bits,V,_,_}) when is_integer(V) -> true; @@ -1919,16 +1922,7 @@ enc_opt(nil, St) -> enc_opt({seq,H0,T0}, St0) -> {H,St1} = enc_opt(H0, St0), {T,St} = enc_opt(T0, St1), - case {H,T} of - {none,_} -> - {T,St}; - {{list,Imm,Data}, - {seq,{call,per,complete,[Data],_},_}} -> - %% Get rid of any explicit 'align' added by per_enc_open_type/2. - {{seq,{list,remove_trailing_align(Imm),Data},T},St}; - {_,_} -> - {{seq,H,T},St} - end; + {enc_opt_seq(H, T),St}; enc_opt({set,_,_}=Imm, St) -> {Imm,St#ost{t=undefined}}; enc_opt({sub,Src0,Int,Dst}, St0) -> @@ -1962,6 +1956,28 @@ remove_trailing_align({seq,H,T}) -> {seq,H,remove_trailing_align(T)}; remove_trailing_align(Imm) -> Imm. +enc_opt_seq(none, T) -> + T; +enc_opt_seq({list,Imm,Data}, {seq,{call,per,complete,[Data],_},_}=T) -> + %% Get rid of any explicit 'align' added by per_enc_open_type/2. + {seq,{list,remove_trailing_align(Imm),Data},T}; +enc_opt_seq({call,_,_,_,{var,_}=Dst}=H, T) -> + case is_var_unused(Dst, T) of + false -> {seq,H,T}; + true -> T + end; +enc_opt_seq(H, T) -> + {seq,H,T}. + +is_var_unused(_, align) -> + true; +is_var_unused(V, {call,_,_,Args}) -> + not lists:member(V, Args); +is_var_unused(V, {cons,H,T}) -> + is_var_unused(V, H) andalso is_var_unused(V, T); +is_var_unused(_, _) -> + false. + bit_size_propagate(Bin, Type, St) -> case t_range(Type) of any -> |