Optimize encoding of ENUMERATED in per and uper

Always pre-encode the values for the enumeration. Clean up the
code and let the per and uper back-ends share the code.

7 files changed, 50 insertions, 122 deletions

diff --git a/lib/asn1/src/Makefile b/lib/asn1/src/Makefile
index b1500d9ea6..4bf6eabce6 100644
--- a/lib/asn1/src/Makefile
+++ b/lib/asn1/src/Makefile
@@ -44,7 +44,8 @@ RELSYSDIR = $(RELEASE_PATH)/lib/asn1-$(VSN)
 EBIN = ../ebin
 
 EVAL_CT_MODULES = asn1ct_eval_ext \
-		  asn1ct_eval_per
+		  asn1ct_eval_per \
+		  asn1ct_eval_uper
 
 CT_MODULES= \
 	asn1ct \
diff --git a/lib/asn1/src/asn1ct_eval_per.funcs b/lib/asn1/src/asn1ct_eval_per.funcs
index 353424c231..a1ea5cd043 100644
--- a/lib/asn1/src/asn1ct_eval_per.funcs
+++ b/lib/asn1/src/asn1ct_eval_per.funcs
@@ -1 +1,2 @@
-{per,encode_integer,2}.
+{per,encode_constrained_number,2}.
+{per,encode_small_number,1}.
diff --git a/lib/asn1/src/asn1ct_eval_uper.funcs b/lib/asn1/src/asn1ct_eval_uper.funcs
new file mode 100644
index 0000000000..884a486f40
--- /dev/null
+++ b/lib/asn1/src/asn1ct_eval_uper.funcs
@@ -0,0 +1,2 @@
+{uper,encode_constrained_number,2}.
+{uper,encode_small_number,1}.
diff --git a/lib/asn1/src/asn1ct_gen_per.erl b/lib/asn1/src/asn1ct_gen_per.erl
index 08b65d466d..5dda5e9c5d 100644
--- a/lib/asn1/src/asn1ct_gen_per.erl
+++ b/lib/asn1/src/asn1ct_gen_per.erl
@@ -143,28 +143,16 @@ gen_encode_prim(Erules,D,DoTag,Value) when is_record(D,type) ->
 		    Value,{asis,NamedNumberList}],
 	    call(Erules, encode_integer, Args);
 	{'ENUMERATED',{Nlist1,Nlist2}} ->
-	    NewList = lists:concat([[{0,X}||{X,_} <- Nlist1],['EXT_MARK'],[{1,X}||{X,_} <- Nlist2]]),
-	    NewC = [{'ValueRange',{0,length(Nlist1)-1}}],
-	    case Erules of
-		uper ->
-		    emit(["case ",Value," of",nl]);
-		_ ->
-		    emit(["case (case ",Value," of {_,",{curr,enumval},"}-> ",
-			  {curr,enumval},";_->", Value," end) of",nl]),
-		    asn1ct_name:new(enumval)
-	    end,
-	    emit_enc_enumerated_cases(Erules,NewC, NewList, 0);
+	    NewList = [{0,X} || {X,_} <- Nlist1] ++ ['EXT_MARK'] ++
+		[{1,X} || {X,_} <- Nlist2],
+	    NewC = {0,length(Nlist1)-1},
+	    emit(["case ",Value," of",nl]),
+	    emit_enc_enumerated_cases(Erules, NewC, NewList, 0);
 	{'ENUMERATED',NamedNumberList} ->
-	    NewList = [X||{X,_} <- NamedNumberList],
-	    NewC = [{'ValueRange',{0,length(NewList)-1}}],
-	    case Erules of
-		uper ->
-		    emit(["case ",Value," of",nl]);
-		_ ->
-		    emit(["case (case ",Value," of {_,",{curr,enumval},
-			  "}->",{curr,enumval},";_->",Value," end) of",nl])
-	    end,
-	    emit_enc_enumerated_cases(Erules,NewC, NewList, 0);
+	    NewList = [X || {X,_} <- NamedNumberList],
+	    NewC = {0,length(NewList)-1},
+	    emit(["case ",Value," of",nl]),
+	    emit_enc_enumerated_cases(Erules, NewC, NewList, 0);
 	
 	'REAL' ->
 	    emit_enc_real(Erules, Value);
@@ -250,34 +238,37 @@ emit_enc_real(Erules, Real) ->
 	  {curr,tmpval},"]",nl,
 	  "end"]).
 
-emit_enc_enumerated_cases(Erule,C, [H], Count) ->
-    emit_enc_enumerated_case(Erule,C, H, Count),
-    case H of
-	'EXT_MARK' -> ok;
-	_ ->
-	    emit([";",nl])
-    end,
-    emit([nl,"EnumVal -> exit({error,{asn1, {enumerated_not_in_range, EnumVal}}})"]),
-    emit([nl,"end"]);
-emit_enc_enumerated_cases(Erule, C, ['EXT_MARK'|T], _Count) ->
-    emit_enc_enumerated_cases(Erule, C, T, 0);
-emit_enc_enumerated_cases(Erule, C, [H1,H2|T], Count) ->
-    emit_enc_enumerated_case(Erule, C, H1, Count),
+emit_enc_enumerated_cases(Erules, C, ['EXT_MARK'|T], _Count) ->
+    %% Reset enumeration counter.
+    emit_enc_enumerated_cases(Erules, C, T, 0);
+emit_enc_enumerated_cases(Erules, C, [H|T], Count) ->
+    emit_enc_enumerated_case(Erules, C, H, Count),
     emit([";",nl]),
-    emit_enc_enumerated_cases(Erule, C, [H2|T], Count+1).
+    emit_enc_enumerated_cases(Erules, C, T, Count+1);
+emit_enc_enumerated_cases(_Erules, _, [], _Count) ->
+    emit(["EnumVal -> "
+	  "exit({error,{asn1,{enumerated_not_in_range, EnumVal}}})",nl,
+	  "end"]).
     
-
-emit_enc_enumerated_case(_Erule, _C, 'EXT_MARK', _Count) ->
-    true;
-emit_enc_enumerated_case(uper=Erules,_C, {1,EnumName}, Count) ->
-    emit(["'",EnumName,"' -> [<<1:1>>,",
-	  {call,Erules,encode_small_number,[Count]},"]"]);
-emit_enc_enumerated_case(uper=Erules, C, {0,EnumName}, Count) ->
-    emit(["'",EnumName,"' -> [<<0:1>>,",
-	  {call,Erules,encode_integer,[{asis,C},Count]},"]"]);
+emit_enc_enumerated_case(Erules, C, {0,EnumName}, Count) ->
+    %% ENUMERATED with extensionmark; the value lies within then extension root
+    Enc = enc_ext_and_val(Erules, 0, encode_constrained_number, [C,Count]),
+    emit(["'",EnumName,"' -> ",{asis,Enc}]);
+emit_enc_enumerated_case(Erules, _C, {1,EnumName}, Count) ->
+    %% ENUMERATED with extensionmark; the value is higher than extension root
+    Enc = enc_ext_and_val(Erules, 1, encode_small_number, [Count]),
+    emit(["'",EnumName,"' -> ",{asis,Enc}]);
 emit_enc_enumerated_case(Erules, C, EnumName, Count) ->
+    %% ENUMERATED without extension
+    EvalMod = eval_module(Erules),
     emit(["'",EnumName,"' -> ",
-	  {call,Erules,encode_integer,[{asis,C},Count]}]).
+	  {asis,EvalMod:encode_constrained_number(C, Count)}]).
+
+enc_ext_and_val(per, E, F, Args) ->
+    [E|apply(asn1ct_eval_per, F, Args)];
+enc_ext_and_val(uper, E, F, Args) ->
+    <<E:1,(apply(asn1ct_eval_uper, F, Args))/bitstring>>.
+
 
 get_constraint([{Key,V}], Key) ->
     V;
@@ -1262,3 +1253,6 @@ imm_dec_open_type_1(Type, Aligned) ->
 		      "end"])
 	end,
     {call,D,asn1ct_imm:per_dec_open_type(Aligned)}.
+
+eval_module(per) -> asn1ct_eval_per;
+eval_module(uper) -> asn1ct_eval_uper.
diff --git a/lib/asn1/src/asn1ct_gen_per_rt2ct.erl b/lib/asn1/src/asn1ct_gen_per_rt2ct.erl
index 7d00f2e817..88e9bc6020 100644
--- a/lib/asn1/src/asn1ct_gen_per_rt2ct.erl
+++ b/lib/asn1/src/asn1ct_gen_per_rt2ct.erl
@@ -138,20 +138,8 @@ gen_encode_prim(Erules,D,DoTag,Value) when is_record(D,type) ->
 	    emit(["  %%INTEGER with effective constraint: ",
 		  {asis,EffectiveConstr},nl]),
 	    emit_enc_integer_NNL(Erules,EffectiveConstr,Value,NamedNumberList);
-	{'ENUMERATED',{Nlist1,Nlist2}} ->
-	    NewList = lists:append([[{0,X}||{X,_} <- Nlist1],['EXT_MARK'],[{1,X}||{X,_} <- Nlist2]]),
-	    NewC = [{'ValueRange',{0,length(Nlist1)-1}}],
-	    emit(["case ",Value," of",nl]),
-%%	    emit_enc_enumerated_cases(Erules,NewC, NewList++[{asn1_enum,length(Nlist1)-1}], 0);
-	    emit_enc_enumerated_cases(Erules,NewC, NewList, 0);
-	{'ENUMERATED',NamedNumberList} ->
-	    NewList = [X||{X,_} <- NamedNumberList],
-	    NewC = effective_constraint(integer,
-					[{'ValueRange',
-					  {0,length(NewList)-1}}]),
-	    NewVal = enc_enum_cases(Value,NewList),
-	    emit_enc_integer(Erules,NewC,NewVal);
-
+	{'ENUMERATED',_} ->
+	    asn1ct_gen_per:gen_encode_prim(Erules, D, DoTag, Value);
 	'REAL' ->
 	    emit_enc_real(Erules, Value);
 
@@ -551,66 +539,6 @@ emit_enc_integer(Erule, C, Value) ->
     call(Erule, encode_integer, [{asis,C},Value]).
 
 
-
-enc_enum_cases(Value,NewList) ->
-    asn1ct_name:new(tmpval),
-    TmpVal = asn1ct_gen:mk_var(asn1ct_name:curr(tmpval)),
-    Cases=enc_enum_cases1(NewList),
-    lists:flatten(io_lib:format("(case ~s of "++Cases++
-				"~s ->exit({error,"
-				"{asn1,{enumerated,~s}}})"
-				" end)",
-				[Value,TmpVal,TmpVal])).
-enc_enum_cases1(NNL) ->
-    enc_enum_cases1(NNL,0).
-enc_enum_cases1([H|T],Index) ->
-    io_lib:format("~w->~w;",[H,Index])++enc_enum_cases1(T,Index+1);
-enc_enum_cases1([],_) ->
-    "".
-
-
-emit_enc_enumerated_cases(Erule, C, [H], Count) ->
-    emit_enc_enumerated_case(Erule, C, H, Count),
-    case H of
-	'EXT_MARK' ->
-	    ok;
-	_ ->
-	    emit([";",nl])
-    end,
-    emit([nl,"EnumVal -> exit({error,{asn1, {enumerated_not_in_range, EnumVal}}})"]),
-    emit([nl,"end"]);
-emit_enc_enumerated_cases(Erule, C, ['EXT_MARK'|T], _Count) ->
-    emit_enc_enumerated_cases(Erule, C, T, 0);
-emit_enc_enumerated_cases(Erule, C, [H1,H2|T], Count) ->
-    emit_enc_enumerated_case(Erule, C, H1, Count),
-    emit([";",nl]),
-    emit_enc_enumerated_cases(Erule, C, [H2|T], Count+1).
-
-
-%% The function clauses matching on tuples with first element 
-%% asn1_enum, 1 or 0 and the atom 'EXT_MARK' are for ENUMERATED
-%% with extension mark.
-%% emit_enc_enumerated_case(_Erule,_C, {asn1_enum,High}, _) -> 
-%%     %% ENUMERATED with extensionmark
-%%     %% value higher than the extension base and not 
-%%     %% present in the extension range.
-emit_enc_enumerated_case(Erule,_C, {1,EnumName}, Count) ->
-    %% ENUMERATED with extensionmark
-    %% values higher than extension root
-    emit(["'",EnumName,"' -> [1,"]),
-    call(Erule, encode_small_number, [Count]),
-    emit("]");
-emit_enc_enumerated_case(_Erule,C, {0,EnumName}, Count) ->
-    %% ENUMERATED with extensionmark
-    %% values within extension root
-    emit(["'",EnumName,"' -> ",{asis,[0|asn1ct_eval_per:encode_integer(C, Count)]}]);
-emit_enc_enumerated_case(_Erule, _C, 'EXT_MARK', _Count) ->
-    true.
-%% %% This clause is invoked in case of an ENUMERATED without extension mark
-%% emit_enc_enumerated_case(_Erule,_C, EnumName, Count) ->
-%%     emit(["'",EnumName,"' -> ",Count]).
-
-
 get_constraint([{Key,V}],Key) ->
     V;
 get_constraint([],_) ->
diff --git a/lib/asn1/src/asn1rtt_per.erl b/lib/asn1/src/asn1rtt_per.erl
index 8234121934..a7bbc33a19 100644
--- a/lib/asn1/src/asn1rtt_per.erl
+++ b/lib/asn1/src/asn1rtt_per.erl
@@ -22,6 +22,7 @@
 	 skipextensions/3, getbit/1, getchoice/3,
 	 set_choice/3,encode_integer/2,
 	 encode_small_number/1,
+	 encode_constrained_number/2,
 	 encode_length/1,
 	 encode_length/2,
 	 decode_compact_bit_string/3,
diff --git a/lib/asn1/src/asn1rtt_uper.erl b/lib/asn1/src/asn1rtt_uper.erl
index bcc11da63a..d4e2fece67 100644
--- a/lib/asn1/src/asn1rtt_uper.erl
+++ b/lib/asn1/src/asn1rtt_uper.erl
@@ -23,7 +23,8 @@
 	 fixextensions/2,
 	 skipextensions/3, getbit/1, getchoice/3 ]).
 -export([set_choice/3, encode_integer/2, encode_integer/3]).
--export([encode_small_number/1, encode_boolean/1,
+-export([encode_small_number/1, encode_constrained_number/2,
+	 encode_boolean/1,
 	 encode_length/1, encode_length/2,
 	 decode_compact_bit_string/3]).
 -export([encode_bit_string/3, decode_bit_string/3]).