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authorBjörn Gustavsson <[email protected]>2013-02-21 14:17:57 +0100
committerBjörn Gustavsson <[email protected]>2013-05-31 14:52:12 +0200
commiteba8580fe10c483cab3a2dc4c603ac27b3ffb4f6 (patch)
tree15243cddac7972300442c25333e94b7035e80704 /lib/asn1
parent988846bb26e652ad2272fac24a679259059bcf39 (diff)
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asn1ct_name: Simplify the data structures of the name server process
Since we no longer need to support push/1 and pop/1, we can simplify the data structures used for keeping track of the variables. Each entry in the list can be simply {Var,integer()} instead of {Var,[integer()]}. While at it, eliminate calls to the obsolete lists:keysearch/3 function, don't use integer_to_list/0 within a call to lists:concat/1, and the catch all clause in get_prev/2 and get_next/2.
Diffstat (limited to 'lib/asn1')
-rw-r--r--lib/asn1/src/asn1ct_name.erl55
1 files changed, 21 insertions, 34 deletions
diff --git a/lib/asn1/src/asn1ct_name.erl b/lib/asn1/src/asn1ct_name.erl
index 24b28ade7e..617bea759a 100644
--- a/lib/asn1/src/asn1ct_name.erl
+++ b/lib/asn1/src/asn1ct_name.erl
@@ -93,11 +93,7 @@ prev(V) ->
end.
next(V) ->
- case req({next,V}) of
- none ->
- exit('cant get next of none');
- Rep -> Rep
- end.
+ req({next,V}).
all(V) ->
Curr = curr(V),
@@ -131,45 +127,36 @@ get_digs([H|T]) ->
[]
end.
-get_curr([],Variable) ->
+get_curr([], Variable) ->
Variable;
-get_curr([{Variable,[0|_Drest]}|_Tail],Variable) ->
- Variable;
-get_curr([{Variable,[Digit|_Drest]}|_Tail],Variable) ->
- list_to_atom(lists:concat([Variable,integer_to_list(Digit)]));
-
-get_curr([_|Tail],Variable) ->
- get_curr(Tail,Variable).
+get_curr([{Variable,Digit}|_Tail], Variable) ->
+ list_to_atom(lists:concat([Variable,Digit]));
+get_curr([_|Tail], Variable) ->
+ get_curr(Tail, Variable).
-new_var(Vars,Variable) ->
- case lists:keysearch(Variable,1,Vars) of
+new_var(Vars, Variable) ->
+ case lists:keyfind(Variable, 1, Vars) of
false ->
- [{Variable,[1]}|Vars];
- {value,{Variable,[Digit|Drest]}} ->
- NewVars = lists:keydelete(Variable,1,Vars),
- [{Variable,[Digit+1|Drest]}|NewVars]
+ [{Variable,1}|Vars];
+ {Variable,Digit} ->
+ NewVars = lists:keydelete(Variable, 1, Vars),
+ [{Variable,Digit+1}|NewVars]
end.
-get_prev(Vars,Variable) ->
- case lists:keysearch(Variable,1,Vars) of
+get_prev(Vars, Variable) ->
+ case lists:keyfind(Variable, 1, Vars) of
false ->
none;
- {value,{Variable,[Digit|_]}} when Digit =< 1 ->
+ {Variable,Digit} when Digit =< 1 ->
Variable;
- {value,{Variable,[Digit|_]}} when Digit > 1 ->
- list_to_atom(lists:concat([Variable,
- integer_to_list(Digit-1)]));
- _ ->
- none
+ {Variable,Digit} when Digit > 1 ->
+ list_to_atom(lists:concat([Variable,Digit-1]))
end.
-get_next(Vars,Variable) ->
- case lists:keysearch(Variable,1,Vars) of
+get_next(Vars, Variable) ->
+ case lists:keyfind(Variable, 1, Vars) of
false ->
list_to_atom(lists:concat([Variable,"1"]));
- {value,{Variable,[Digit|_]}} when Digit >= 0 ->
- list_to_atom(lists:concat([Variable,
- integer_to_list(Digit+1)]));
- _ ->
- none
+ {Variable,Digit} when Digit >= 0 ->
+ list_to_atom(lists:concat([Variable,Digit+1]))
end.