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authorBjörn Gustavsson <[email protected]>2014-08-22 10:14:02 +0200
committerBjörn Gustavsson <[email protected]>2014-09-01 14:37:15 +0200
commitdb3f8d752054d69285c318e39adb45cf4c85a3e7 (patch)
tree7f24c0a414b9c2275403447a8e46c4e54c0b222f /lib/asn1
parent9b786fc3114723d71383b184c4824d4498a1e6af (diff)
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Clean up and correct handling of parameters for parameterized types
The previous code looked at the actual parameters supplied when instantiating the type to determine the type of the argument; the correct way is to determine the type by looking at the governor and case of the formal parameter.
Diffstat (limited to 'lib/asn1')
-rw-r--r--lib/asn1/src/asn1ct_check.erl99
1 files changed, 25 insertions, 74 deletions
diff --git a/lib/asn1/src/asn1ct_check.erl b/lib/asn1/src/asn1ct_check.erl
index 2e0e4d5977..76a74aa477 100644
--- a/lib/asn1/src/asn1ct_check.erl
+++ b/lib/asn1/src/asn1ct_check.erl
@@ -3609,40 +3609,26 @@ match_args(_,_, _, _) ->
%% categorize_arg(S,FormalArg,ActualArg) -> {FormalArg,CatgorizedActualArg}
%%
categorize_arg(S,{Governor,Param},ActArg) ->
- case {governor_category(S,Governor),parameter_name_style(Param,ActArg)} of
-%% {absent,beginning_uppercase} -> %% a type
-%% categorize(S,type,ActArg);
- {type,beginning_lowercase} -> %% a value
- categorize(S,value,Governor,ActArg);
- {type,beginning_uppercase} -> %% a value set
- categorize(S,value_set,ActArg);
-%% {absent,entirely_uppercase} -> %% a class
-%% categorize(S,class,ActArg);
+ case {governor_category(S, Governor),parameter_name_style(Param)} of
+ {type,beginning_lowercase} -> %a value
+ categorize(S, value, Governor, ActArg);
+ {type,beginning_uppercase} -> %a value set
+ categorize(ActArg);
{{class,ClassRef},beginning_lowercase} ->
- categorize(S,object,ActArg,ClassRef);
+ categorize(S, object, ActArg, ClassRef);
{{class,ClassRef},beginning_uppercase} ->
- categorize(S,object_set,ActArg,ClassRef);
- _ ->
- [ActArg]
+ categorize(S, object_set, ActArg, ClassRef)
end;
-categorize_arg(S,FormalArg,ActualArg) ->
- %% governor is absent => a type or a class
- case FormalArg of
- #'Externaltypereference'{type=Name} ->
- case is_class_name(Name) of
- true ->
- categorize(S,class,ActualArg);
- _ ->
- categorize(S,type,ActualArg)
- end;
- FA ->
- throw({error,{unexpected_formal_argument,FA}})
- end.
-
-governor_category(S,#type{def=Eref})
- when is_record(Eref,'Externaltypereference') ->
- governor_category(S,Eref);
-governor_category(_S,#type{}) ->
+categorize_arg(_S, _FormalArg, ActualArg) ->
+ %% Governor is absent -- must be a type or a class. We have already
+ %% checked that the FormalArg begins with an uppercase letter.
+ categorize(ActualArg).
+
+%% governor_category(S, Item) -> type | {class,#'Externaltypereference'{}}
+%% Determine whether Item is a type or a class.
+governor_category(S, #type{def=#'Externaltypereference'{}=Eref}) ->
+ governor_category(S, Eref);
+governor_category(_S, #type{}) ->
type;
governor_category(S, #'Externaltypereference'{}=Ref) ->
case get_class_def(S, Ref) of
@@ -3657,56 +3643,20 @@ governor_category(S, #'Externaltypereference'{}=Ref) ->
%% whether it begins with a lowercase letter or is partly or entirely
%% spelled with uppercase letters. Otherwise returns undefined
%%
-parameter_name_style(_,#'Externaltypereference'{type=Name}) ->
- name_category(Name);
-parameter_name_style(_,#'Externalvaluereference'{value=Name}) ->
- name_category(Name);
-parameter_name_style(_,{valueset,_}) ->
- %% It is a object set or value set
+parameter_name_style(#'Externaltypereference'{}) ->
beginning_uppercase;
-parameter_name_style(#'Externalvaluereference'{},_) ->
- beginning_lowercase;
-parameter_name_style(#'Externaltypereference'{type=Name},_) ->
- name_category(Name);
-parameter_name_style(_,_) ->
- undefined.
-
-name_category(Atom) when is_atom(Atom) ->
- name_category(atom_to_list(Atom));
-name_category([H|T]) ->
- case is_lowercase(H) of
- true ->
- beginning_lowercase;
- _ ->
- case is_class_name(T) of
- true ->
- entirely_uppercase;
- _ ->
- beginning_uppercase
- end
- end;
-name_category(_) ->
- undefined.
+parameter_name_style(#'Externalvaluereference'{}) ->
+ beginning_lowercase.
is_lowercase(X) when X >= $A,X =< $W ->
false;
is_lowercase(_) ->
true.
-
-is_class_name(Name) when is_atom(Name) ->
- is_class_name(atom_to_list(Name));
-is_class_name(Name) ->
- case [X||X <- Name, X >= $a,X =< $w] of
- [] ->
- true;
- _ ->
- false
- end.
-%% categorize(S,Category,Parameter) -> CategorizedParameter
+%% categorize(Parameter) -> CategorizedParameter
%% If Parameter has an abstract syntax of another category than
%% Category, transform it to a known syntax.
-categorize(_S,type,{object,_,Type}) ->
+categorize({object,_,Type}) ->
%% One example of this case is an object with a parameterized type
%% having a locally defined type as parameter.
Def = fun(D = #type{}) ->
@@ -3718,11 +3668,12 @@ categorize(_S,type,{object,_,Type}) ->
D
end,
[Def(X)||X<-Type];
-categorize(_S,type,Def) when is_record(Def,type) ->
+categorize(#type{}=Def) ->
[#typedef{name = new_reference_name("type_argument"),
typespec = Def#type{inlined=yes}}];
-categorize(_,_,Def) ->
+categorize(Def) ->
[Def].
+
categorize(S,object_set,Def,ClassRef) ->
NewObjSetSpec =
check_object(S,Def,#'ObjectSet'{class = ClassRef,