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| author | Björn Gustavsson <[email protected]> | 2014-05-06 11:02:00 +0200 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2014-06-05 13:46:28 +0200 |
| commit | 82c208f42ba9263cc97e30558dc2564511e64c4d (patch) | |
| tree | 986405c9f9aef83f07404c4f8419b96891325ba7 /lib/asn1 | |
| parent | bf1f64b65555600aaed77dfd7392afcfe55b83b4 (diff) | |
| download | otp-82c208f42ba9263cc97e30558dc2564511e64c4d.tar.gz otp-82c208f42ba9263cc97e30558dc2564511e64c4d.tar.bz2 otp-82c208f42ba9263cc97e30558dc2564511e64c4d.zip | |
(U)PER: Fix decoding of named INTEGER
Diffstat (limited to 'lib/asn1')
| -rw-r--r-- | lib/asn1/src/asn1ct_imm.erl | 47 | ||||
| -rw-r--r-- | lib/asn1/test/asn1_SUITE_data/Constraints.py | 6 |
2 files changed, 38 insertions, 15 deletions
diff --git a/lib/asn1/src/asn1ct_imm.erl b/lib/asn1/src/asn1ct_imm.erl index 5191635a81..bdd14871d1 100644 --- a/lib/asn1/src/asn1ct_imm.erl +++ b/lib/asn1/src/asn1ct_imm.erl @@ -82,15 +82,8 @@ per_dec_enumerated(NamedList0, Aligned) -> Ub = length(NamedList0) - 1, Constraint = [{'ValueRange',{0,Ub}}], Int = per_dec_integer(Constraint, Aligned), - EnumTail = case matched_range(Int) of - {0,Ub} -> - %% The error case can never happen. - []; - _ -> - [enum_error] - end, - NamedList = per_dec_enumerated_fix_list(NamedList0, EnumTail, 0), - {map,Int,NamedList}. + NamedList = per_dec_enumerated_fix_list(NamedList0, [enum_error], 0), + {map,Int,opt_map(NamedList, Int)}. per_dec_enumerated(BaseNamedList, NamedListExt0, Aligned) -> Base = per_dec_enumerated(BaseNamedList, Aligned), @@ -124,7 +117,7 @@ per_dec_length(no, AllowZero, Aligned) -> per_dec_named_integer(Constraint, NamedList0, Aligned) -> Int = per_dec_integer(Constraint, Aligned), NamedList = [{K,V} || {V,K} <- NamedList0] ++ [integer_default], - {map,Int,NamedList}. + {map,Int,opt_map(NamedList, Int)}. per_dec_k_m_string(StringType, Constraint, Aligned) -> SzConstr = effective_constraint(bitstring, Constraint), @@ -588,14 +581,42 @@ per_num_bits(N) when N =< 64 -> 6; per_num_bits(N) when N =< 128 -> 7; per_num_bits(N) when N =< 255 -> 8. +opt_map(Map, Imm) -> + case matched_range(Imm) of + unknown -> Map; + {Lb,Ub} -> opt_map_1(Map, Lb, Ub) + end. + +opt_map_1([{I,_}=Pair|T], Lb, Ub) -> + if + I =:= Lb, I =< Ub -> + [Pair|opt_map_1(T, Lb+1, Ub)]; + Lb < I, I =< Ub -> + [Pair|opt_map_1(T, Lb, Ub)]; + true -> + opt_map_1(T, Lb, Ub) + end; +opt_map_1(Map, Lb, Ub) -> + if + Lb =< Ub -> + Map; + true -> + [] + end. + matched_range({get_bits,Bits0,[U|Flags]}) when is_integer(U) -> - case lists:member(signed, Flags) of - false -> + case not lists:member(signed, Flags) andalso is_integer(Bits0) of + true -> Bits = U*Bits0, {0,(1 bsl Bits) - 1}; - true -> + false -> unknown end; +matched_range({add,Imm,Add}) -> + case matched_range(Imm) of + unknown -> unknown; + {Lb,Ub} -> {Lb+Add,Ub+Add} + end; matched_range(_Op) -> unknown. string_num_bits(StringType, Constraint, Aligned) -> diff --git a/lib/asn1/test/asn1_SUITE_data/Constraints.py b/lib/asn1/test/asn1_SUITE_data/Constraints.py index 1fe658d2e2..3495cd841b 100644 --- a/lib/asn1/test/asn1_SUITE_data/Constraints.py +++ b/lib/asn1/test/asn1_SUITE_data/Constraints.py @@ -66,10 +66,12 @@ Wednesday ::= Day(wednesday) Thing ::= INTEGER {fred (0),fred2 (1),fred3 (2)} - - AnotherThing ::= Thing (fred | fred2) +OneMoreThing ::= INTEGER {wilma(0), fred(1), betty(3), barney(2)} +OneMoreThing-1 ::= OneMoreThing (wilma | fred) +OneMoreThing-2 ::= OneMoreThing (fred | barney) + I ::= INTEGER (0|15..269) -- OTP-5457 X1 ::= INTEGER (1..4 | 8 | 10 | 20) -- OTP-9946 |