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authorDan Gudmundsson <[email protected]>2014-11-28 10:58:47 +0100
committerBjörn Gustavsson <[email protected]>2015-01-12 11:40:28 +0100
commit76075cb862d629a9624ab4db98ff876e261fc796 (patch)
treef1c3b4ffec8e9a495fa3554f0de1c98593f035ca /lib/asn1/src
parent2687287372f725dfb99ca6d712b214751c419cc2 (diff)
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Clean up get_unique_fieldname/2
get_unique_fieldname/2 would throw an exception that *all* callers would catch and handle. Since all callers catch the exception, it is much easier to return a special return value. Also use the new error reporting style. While we are at it, remove all catches of {asn1,Error} which are no longer thrown.
Diffstat (limited to 'lib/asn1/src')
-rw-r--r--lib/asn1/src/asn1ct_check.erl82
1 files changed, 28 insertions, 54 deletions
diff --git a/lib/asn1/src/asn1ct_check.erl b/lib/asn1/src/asn1ct_check.erl
index fa70f7b18c..e6e6fa73c1 100644
--- a/lib/asn1/src/asn1ct_check.erl
+++ b/lib/asn1/src/asn1ct_check.erl
@@ -441,8 +441,6 @@ checko(S0,[Name|Os],Acc,ExclO,ExclOS) ->
error({type,Reason,NewS});
{'EXIT',Reason} ->
error({type,{internal_error,Reason},NewS});
- {asn1,Reason} ->
- error({type,Reason,NewS});
O ->
NewObj = Object#typedef{checked=true,typespec=O},
asn1_db:dbput(NewS#state.mname,Name,NewObj),
@@ -470,8 +468,6 @@ checko(S0,[Name|Os],Acc,ExclO,ExclOS) ->
error({type,Reason,NewS});
{'EXIT',Reason} ->
error({type,{internal_error,Reason},NewS});
- {asn1,Reason} ->
- error({type,Reason,NewS});
PO ->
NewPObj = PObject#pobjectdef{def=PO},
asn1_db:dbput(NewS#state.mname,Name,NewPObj),
@@ -486,8 +482,6 @@ checko(S0,[Name|Os],Acc,ExclO,ExclOS) ->
error({type,Reason,NewS});
{'EXIT',Reason} ->
error({type,{internal_error,Reason},NewS});
- {asn1,Reason} ->
- error({type,Reason,NewS});
POS ->
%%NewPObjSet = PObjSet#pvaluesetdef{valueset=POS},
asn1_db:dbput(NewS#state.mname,Name,POS),
@@ -765,12 +759,9 @@ check_object(S,_ObjDef,#'Object'{classname=ClassRef,def=ObjectDef}) ->
check_object(S, _, #'ObjectSet'{class=ClassRef0,set=Set0}=ObjSet0) ->
{_,ClassDef} = get_referenced_type(S, ClassRef0),
ClassRef = check_externaltypereference(S, ClassRef0),
- {UniqueFieldName,UniqueInfo} =
- case (catch get_unique_fieldname(S,ClassDef)) of
- {error,'__undefined_',_} ->
- {{unique,undefined},{unique,undefined}};
- {asn1,Msg,_} -> error({class,Msg,S});
- {'EXIT',Msg} -> error({class,{internal_error,Msg},S});
+ {UniqueFieldName,UniqueInfo} =
+ case get_unique_fieldname(S, ClassDef) of
+ no_unique -> {{unique,undefined},{unique,undefined}};
Other -> {element(1,Other),Other}
end,
OSI0 = #osi{st=S,classref=ClassRef,uniq=UniqueInfo,ext=false},
@@ -1272,10 +1263,10 @@ gen_incl_set(S,Fields,#typedef{typespec=#type{def=Eref}})
{_,CDef} = get_referenced_type(S,Eref),
gen_incl_set(S,Fields,CDef);
gen_incl_set(S,Fields,ClassDef) ->
- case catch get_unique_fieldname(S,ClassDef) of
- Tuple when tuple_size(Tuple) =:= 3 ->
+ case get_unique_fieldname(S, ClassDef) of
+ no_unique ->
false;
- _ ->
+ {_, _} ->
gen_incl_set1(S,Fields,
(ClassDef#classdef.typespec)#objectclass.fields)
end.
@@ -3009,9 +3000,9 @@ maybe_open_type(S, #objectclass{fields=Fs}=ClassSpec,
{typefieldreference,_} ->
%% Note: The constraints have not been checked yet,
%% so we must use a special lookup routine.
- case {catch get_unique_fieldname(S,#classdef{typespec=ClassSpec}),
+ case {get_unique_fieldname(S, #classdef{typespec=ClassSpec}),
get_componentrelation(Constr)} of
- {Tuple,_} when tuple_size(Tuple) =:= 3 ->
+ {no_unique,_} ->
OCFT#'ObjectClassFieldType'{fieldname=FieldNames,
type='ASN1_OPEN_TYPE'};
{_,no} ->
@@ -5045,28 +5036,18 @@ componentrelation_leadingattr(S,[C= #'ComponentType'{}|Cs],CompList,Acc,CompAcc)
{[],C};
[{ObjSet,Attr,N,ClassDef,_Path,ValueIndex}|_NewRest] ->
OS = object_set_mod_name(S,ObjSet),
- UniqueFieldName =
- case (catch get_unique_fieldname(S,#classdef{typespec=ClassDef})) of
- {error,'__undefined_',_} ->
- no_unique;
- {asn1,Msg,_} ->
- error({type,Msg,S});
- {'EXIT',Msg} ->
- error({type,{internal_error,Msg},S});
- {Other,_} -> Other
- end,
-% UsedFieldName = get_used_fieldname(S,Attr,STList),
+ UniqFN = get_unique_fieldname(S,
+ #classdef{typespec=ClassDef}),
%% Res should be done differently: even though
%% a unique field name exists it is not
%% certain that the ObjectClassFieldType of
%% the simple table constraint picks that
%% class field.
Res = #simpletableattributes{objectsetname=OS,
-%% c_name=asn1ct_gen:un_hyphen_var(Attr),
c_name=Attr,
c_index=N,
- usedclassfield=UniqueFieldName,
- uniqueclassfield=UniqueFieldName,
+ usedclassfield=UniqFN,
+ uniqueclassfield=UniqFN,
valueindex=ValueIndex},
{[Res],C#'ComponentType'{typespec=NewTSpec}}
end;
@@ -5185,15 +5166,7 @@ simple_table_info(S,#'ObjectClassFieldType'{classname=ClRef,
CDef;
_ -> #classdef{typespec=ObjectClass}
end,
- UniqueName =
- case (catch get_unique_fieldname(S,ClassDef)) of
- {error,'__undefined_',_} -> no_unique;
- {asn1,Msg,_} ->
- error({type,Msg,S});
- {'EXIT',Msg} ->
- error({type,{internal_error,Msg},S});
- {Other,_} -> Other
- end,
+ UniqueName = get_unique_fieldname(S, ClassDef),
{lists:reverse(Path),ObjectClassFieldName,UniqueName}.
%% any_component_relation searches for all component relation
@@ -5557,26 +5530,25 @@ component_index1(S,Name,[],_) ->
error({type,{asn1,"component of at-list was not"
" found in substructure",Name},S}).
-get_unique_fieldname(_S,ClassDef) when is_record(ClassDef,classdef) ->
-%% {_,Fields,_} = ClassDef#classdef.typespec,
- Fields = (ClassDef#classdef.typespec)#objectclass.fields,
- get_unique_fieldname1(Fields,[]);
+get_unique_fieldname(S, #classdef{typespec=TS}) ->
+ Fields = TS#objectclass.fields,
+ get_unique_fieldname1(S, Fields, []);
get_unique_fieldname(S,#typedef{typespec=#type{def=ClassRef}}) ->
%% A class definition may be referenced as
%% REFED-CLASS ::= DEFINED-CLASS and then REFED-CLASS is a typedef
{_M,ClassDef} = get_referenced_type(S,ClassRef),
get_unique_fieldname(S,ClassDef).
-get_unique_fieldname1([],[]) ->
- throw({error,'__undefined_',[]});
-get_unique_fieldname1([],[Name]) ->
- Name;
-get_unique_fieldname1([],Acc) ->
- throw({asn1,'only one UNIQUE field is allowed in CLASS',Acc});
-get_unique_fieldname1([{fixedtypevaluefield,Name,_,'UNIQUE',Opt}|Rest],Acc) ->
- get_unique_fieldname1(Rest,[{Name,Opt}|Acc]);
-get_unique_fieldname1([_H|T],Acc) ->
- get_unique_fieldname1(T,Acc).
+get_unique_fieldname1(S, [{fixedtypevaluefield,Name,_,'UNIQUE',Opt}|T], Acc) ->
+ get_unique_fieldname1(S, T, [{Name,Opt}|Acc]);
+get_unique_fieldname1(S, [_|T], Acc) ->
+ get_unique_fieldname1(S, T, Acc);
+get_unique_fieldname1(S, [], Acc) ->
+ case Acc of
+ [] -> no_unique;
+ [Name] -> Name;
+ [_|_] -> asn1_error(S, multiple_uniqs)
+ end.
get_tableconstraint_info(S,Type,{CheckedTs,EComps,CheckedTs2}) ->
{get_tableconstraint_info(S,Type,CheckedTs,[]),
@@ -5901,6 +5873,8 @@ format_error({missing_table_constraint,Component}) ->
[Component]);
format_error({missing_ocft,Component}) ->
io_lib:format("the component '~s' must be an ObjectClassFieldType (CLASSNAME.&field-name)", [Component]);
+format_error(multiple_uniqs) ->
+ "implementation limitation: only one UNIQUE field is allowed in CLASS";
format_error({namelist_redefinition,Name}) ->
io_lib:format("the name '~s' can not be redefined", [Name]);
format_error(reversed_range) ->