diff options
Diffstat (limited to 'lib/asn1/src/asn1ct_name.erl')
| -rw-r--r-- | lib/asn1/src/asn1ct_name.erl | 152 |
1 files changed, 42 insertions, 110 deletions
diff --git a/lib/asn1/src/asn1ct_name.erl b/lib/asn1/src/asn1ct_name.erl index 3ab6f7b0ed..c0c2ed302c 100644 --- a/lib/asn1/src/asn1ct_name.erl +++ b/lib/asn1/src/asn1ct_name.erl @@ -21,13 +21,8 @@ %%-compile(export_all). -export([start/0, - stop/0, - push/1, - pop/1, curr/1, clear/0, - delete/1, - active/1, prev/1, next/1, all/1, @@ -43,30 +38,19 @@ start() -> end)), ok; _Pid -> - already_started + %% Already started. Clear the variables. + clear() end. -stop() -> - req(stop), - erase(?MODULE). - name_server_loop({Ref, Parent} = Monitor,Vars) -> %% io:format("name -- ~w~n",[Vars]), receive + {_From,clear} -> + name_server_loop(Monitor, []); {From,{current,Variable}} -> From ! {?MODULE,get_curr(Vars,Variable)}, name_server_loop(Monitor,Vars); - {From,{pop,Variable}} -> - From ! {?MODULE,done}, - name_server_loop(Monitor,pop_var(Vars,Variable)); - {From,{push,Variable}} -> - From ! {?MODULE,done}, - name_server_loop(Monitor,push_var(Vars,Variable)); - {From,{delete,Variable}} -> - From ! {?MODULE,done}, - name_server_loop(Monitor,delete_var(Vars,Variable)); - {From,{new,Variable}} -> - From ! {?MODULE,done}, + {_From,{new,Variable}} -> name_server_loop(Monitor,new_var(Vars,Variable)); {From,{prev,Variable}} -> From ! {?MODULE,get_prev(Vars,Variable)}, @@ -74,32 +58,29 @@ name_server_loop({Ref, Parent} = Monitor,Vars) -> {From,{next,Variable}} -> From ! {?MODULE,get_next(Vars,Variable)}, name_server_loop(Monitor,Vars); - {'DOWN', Ref, process, Parent, Reason} -> - exit(Reason); - {From,stop} -> - From ! {?MODULE,stopped} - end. - -active(V) -> - case curr(V) of - nil -> false; - _ -> true + {'DOWN', Ref, process, Parent, Reason} -> + exit(Reason) end. req(Req) -> - get(?MODULE) ! {self(), Req}, + Pid = get(?MODULE), + Ref = monitor(process, Pid), + Pid ! {self(), Req}, receive - {?MODULE, Reply} -> Reply - after 5000 -> - exit(name_server_timeout) + {?MODULE, Reply} -> + Reply; + {'DOWN', Ref, process, Pid, Reason} -> + error({name_server_died,Reason}) end. -pop(V) -> req({pop,V}). -push(V) -> req({push,V}). -clear() -> stop(), start(). +cast(Req) -> + get(?MODULE) ! {self(), Req}, + ok. + +clear() -> cast(clear). curr(V) -> req({current,V}). -new(V) -> req({new,V}). -delete(V) -> req({delete,V}). +new(V) -> cast({new,V}). + prev(V) -> case req({prev,V}) of none -> @@ -108,11 +89,7 @@ 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), @@ -146,81 +123,36 @@ get_digs([H|T]) -> [] end. -push_var(Vars,Variable) -> - case lists:keysearch(Variable,1,Vars) of - false -> - [{Variable,[0]}|Vars]; - {value,{Variable,[Digit|Drest]}} -> - NewVars = lists:keydelete(Variable,1,Vars), - [{Variable,[Digit,Digit|Drest]}|NewVars] - end. - -pop_var(Vars,Variable) -> - case lists:keysearch(Variable,1,Vars) of - false -> - ok; - {value,{Variable,[_Dig]}} -> - lists:keydelete(Variable,1,Vars); - {value,{Variable,[_Dig|Digits]}} -> - NewVars = lists:keydelete(Variable,1,Vars), - [{Variable,Digits}|NewVars] - 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). - -new_var(Vars,Variable) -> - case lists:keysearch(Variable,1,Vars) of - false -> - [{Variable,[1]}|Vars]; - {value,{Variable,[Digit|Drest]}} -> - NewVars = lists:keydelete(Variable,1,Vars), - [{Variable,[Digit+1|Drest]}|NewVars] - end. +get_curr([{Variable,Digit}|_Tail], Variable) -> + list_to_atom(lists:concat([Variable,Digit])); +get_curr([_|Tail], Variable) -> + get_curr(Tail, Variable). -delete_var(Vars,Variable) -> - case lists:keysearch(Variable,1,Vars) of +new_var(Vars, Variable) -> + case lists:keyfind(Variable, 1, Vars) of false -> - Vars; - {value,{Variable,[N]}} when N =< 1 -> - lists:keydelete(Variable,1,Vars); - {value,{Variable,[Digit|Drest]}} -> - case Digit of - 0 -> - Vars; - _ -> - NewVars = lists:keydelete(Variable,1,Vars), - [{Variable,[Digit-1|Drest]}|NewVars] - end + [{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. |