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-rw-r--r--lib/asn1/src/asn1ct_gen.erl19
1 files changed, 18 insertions, 1 deletions
diff --git a/lib/asn1/src/asn1ct_gen.erl b/lib/asn1/src/asn1ct_gen.erl
index 4707e517b4..44b050e59d 100644
--- a/lib/asn1/src/asn1ct_gen.erl
+++ b/lib/asn1/src/asn1ct_gen.erl
@@ -1125,7 +1125,22 @@ pgen_info() ->
open_hrl(OutFile,Module) ->
File = lists:concat([OutFile,".hrl"]),
_ = open_output_file(File),
- gen_hrlhead(Module).
+ gen_hrlhead(Module),
+ Protector = hrl_protector(OutFile),
+ emit(["-ifndef(",Protector,").\n",
+ "-define(",Protector,", true).\n"
+ "\n"]).
+
+hrl_protector(OutFile) ->
+ BaseName = filename:basename(OutFile),
+ P = "_" ++ string:to_upper(BaseName) ++ "_HRL_",
+ [if
+ $A =< C, C =< $Z -> C;
+ $a =< C, C =< $a -> C;
+ $0 =< C, C =< $9 -> C;
+ true -> $_
+ end || C <- P].
+
%% EMIT functions ************************
%% ***************************************
@@ -1232,6 +1247,8 @@ pgen_hrl(Erules,Module,TypeOrVal,Options,_Indent) ->
0 ->
0;
Y ->
+ Protector = hrl_protector(get(outfile)),
+ emit(["-endif. %% ",Protector,"\n"]),
close_output_file(),
asn1ct:verbose("--~p--~n",
[{generated,lists:concat([get(outfile),".hrl"])}],