File 2434-asn1ct_gen_ber_bin_v2-Remove-unused-code.p... of Package erlang

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File 2434-asn1ct_gen_ber_bin_v2-Remove-unused-code.patch of Package erlang (Revision 6a6e740c0161086d7407fd293e77c355)

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From f76696a77fbf0ff4af3beec3567d27121ce8061c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Thu, 2 Mar 2017 10:34:48 +0100
Subject: [PATCH 03/10] asn1ct_gen_ber_bin_v2: Remove unused code

The code is not covered. The code is also not present
in the PER backend.

Here is a somewhat more formal proof that the code cannot
be reached:

asn1ct_gen_ber_bin_v2:gen_encode_user/3 calls
asn1ct_gen:gen_encode_constructed/4 where Typename is a list
of one element.

asn1ct_gen:gen_encode_constructed/4 will call
asn1ct_gen_ber_bin_v2:gen_encode/3 via asn1ct_gen:gen_types/4.

Note that if InnerType in asn1ct_gen:gen_encode_constructed/4
is 'SEQUENCE OF' or 'SET OF', Typename will be extended to a
list with two elements.

If InnerType in asn1ct_gen:gen_encode_constructed/4 is
'SET', 'SEQUENCE', or 'CHOICE', then asn1ct_gen_ber_bin_v2:gen_encode/3
will be called with the last argument being a #'ComponentType'{}.
asn1ct_gen_ber_bin_v2:gen_encode/3 will in that cause extend
Typename before calling itself recursively.

Therefore, Typename is always a list with at least two elements
when the removed code is called.
---
 lib/asn1/src/asn1ct_gen_ber_bin_v2.erl | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl b/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl
index 6c6d4193f..4b25b474f 100644
--- a/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl
+++ b/lib/asn1/src/asn1ct_gen_ber_bin_v2.erl
@@ -110,15 +110,6 @@ gen_encode(Erules,Typename,Type) when is_record(Type,type) ->
 	    emit([nl,nl,nl,"%%================================"]),
 	    emit([nl,"%%  ",asn1ct_gen:list2name(Typename)]),
 	    emit([nl,"%%================================",nl]),
-	    case length(Typename) of
-		1 -> % top level type
-		    emit(["'enc_",asn1ct_gen:list2name(Typename),
-			  "'(Val",ObjFun,") ->",nl]),
-		    emit(["    'enc_",asn1ct_gen:list2name(Typename),
-			  "'(Val, ", {asis,lists:reverse(Type#type.tag)},ObjFun,").",nl,nl]);
-		_ -> % embedded type with constructed name
-		    true
-	    end,
 	    emit(["'enc_",asn1ct_gen:list2name(Typename),
 		  "'(Val, TagIn",ObjFun,") ->",nl,"   "]),
 	    asn1ct_gen:gen_encode_constructed(Erules,Typename,InnerType,Type);
-- 
2.12.0

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