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-rw-r--r--lib/test_server/src/erl2html2.erl65
1 files changed, 52 insertions, 13 deletions
diff --git a/lib/test_server/src/erl2html2.erl b/lib/test_server/src/erl2html2.erl
index 952036502a..b9b45cda25 100644
--- a/lib/test_server/src/erl2html2.erl
+++ b/lib/test_server/src/erl2html2.erl
@@ -88,34 +88,73 @@ convert(File, Dest, Header) ->
%%%
%%% All function clauses are also marked in order to allow
%%% possibly_enhance/2 to write these in bold.
+%%%
+%%% Use expanded preprocessor directives if possible (epp). Only if
+%%% this fails, fall back on using non-expanded code (epp_dodger).
+
parse_file(File) ->
case epp:open(File, [], []) of
{ok,Epp} ->
- Forms = parse_file(Epp,File,false),
- epp:close(Epp),
- {ok,Forms};
- {error,E} ->
- {error,E}
+ try parse_preprocessed_file(Epp,File,false) of
+ Forms ->
+ epp:close(Epp),
+ {ok,Forms}
+ catch
+ _:{error,_Reason,true} ->
+ parse_non_preprocessed_file(File);
+ _:{error,_Reason,false} ->
+ {ok,[]}
+ end;
+ Error = {error,_} ->
+ Error
end.
-
-parse_file(Epp,File,InCorrectFile) ->
+parse_preprocessed_file(Epp,File,InCorrectFile) ->
case epp:parse_erl_form(Epp) of
{ok,Form} ->
case Form of
{attribute,_,file,{File,_}} ->
- parse_file(Epp,File,true);
+ parse_preprocessed_file(Epp,File,true);
{attribute,_,file,{_OtherFile,_}} ->
- parse_file(Epp,File,false);
+ parse_preprocessed_file(Epp,File,false);
{function,L,F,A,[_|C]} when InCorrectFile ->
Clauses = [{clause,CL} || {clause,CL,_,_,_} <- C],
[{atom_to_list(F),A,L} | Clauses] ++
- parse_file(Epp,File,true);
+ parse_preprocessed_file(Epp,File,true);
+ _ ->
+ parse_preprocessed_file(Epp,File,InCorrectFile)
+ end;
+ {error,Reason={_L,epp,{undefined,_Macro,none}}} ->
+ throw({error,Reason,InCorrectFile});
+ {error,_Reason} ->
+ parse_preprocessed_file(Epp,File,InCorrectFile);
+ {eof,_Location} ->
+ []
+ end.
+
+parse_non_preprocessed_file(File) ->
+ case file:open(File, []) of
+ {ok,Epp} ->
+ Forms = parse_non_preprocessed_file(Epp, File, 1),
+ file:close(Epp),
+ {ok,Forms};
+ Error = {error,_E} ->
+ Error
+ end.
+
+parse_non_preprocessed_file(Epp, File, Location) ->
+ case epp_dodger:parse_form(Epp, Location) of
+ {ok,Tree,Location1} ->
+ case erl_syntax:revert(Tree) of
+ {function,L,F,A,[_|C]} ->
+ Clauses = [{clause,CL} || {clause,CL,_,_,_} <- C],
+ [{atom_to_list(F),A,L} | Clauses] ++
+ parse_non_preprocessed_file(Epp, File, Location1);
_ ->
- parse_file(Epp,File,InCorrectFile)
+ parse_non_preprocessed_file(Epp, File, Location1)
end;
- {error,_E} ->
- parse_file(Epp,File,InCorrectFile);
+ {error,_E,Location1} ->
+ parse_non_preprocessed_file(Epp, File, Location1);
{eof,_Location} ->
[]
end.