diff options
Diffstat (limited to 'lib/syntax_tools/src/epp_dodger.erl')
| -rw-r--r-- | lib/syntax_tools/src/epp_dodger.erl | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/lib/syntax_tools/src/epp_dodger.erl b/lib/syntax_tools/src/epp_dodger.erl index 0a12e8fd8b..7e741cc649 100644 --- a/lib/syntax_tools/src/epp_dodger.erl +++ b/lib/syntax_tools/src/epp_dodger.erl @@ -502,6 +502,10 @@ quickscan_form([{'-', _L}, {atom, La, ifdef} | _Ts]) -> kill_form(La); quickscan_form([{'-', _L}, {atom, La, ifndef} | _Ts]) -> kill_form(La); +quickscan_form([{'-', _L}, {'if', La} | _Ts]) -> + kill_form(La); +quickscan_form([{'-', _L}, {atom, La, elif} | _Ts]) -> + kill_form(La); quickscan_form([{'-', _L}, {atom, La, else} | _Ts]) -> kill_form(La); quickscan_form([{'-', _L}, {atom, La, endif} | _Ts]) -> @@ -615,8 +619,13 @@ filter_form(T) -> %% --------------------------------------------------------------------- %% Normal parsing - try to preserve all information -normal_parser(Ts, Opt) -> - rewrite_form(parse_tokens(scan_form(Ts, Opt))). +normal_parser(Ts0, Opt) -> + case scan_form(Ts0, Opt) of + Ts when is_list(Ts) -> + rewrite_form(parse_tokens(Ts)); + Node -> + Node + end. scan_form([{'-', _L}, {atom, La, define} | Ts], Opt) -> [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La}, @@ -636,12 +645,26 @@ scan_form([{'-', _L}, {atom, La, ifdef} | Ts], Opt) -> scan_form([{'-', _L}, {atom, La, ifndef} | Ts], Opt) -> [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La}, {atom, La, ifndef} | scan_macros(Ts, Opt)]; +scan_form([{'-', _L}, {'if', La} | Ts], Opt) -> + [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La}, + {atom, La, 'if'} | scan_macros(Ts, Opt)]; +scan_form([{'-', _L}, {atom, La, elif} | Ts], Opt) -> + [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La}, + {atom, La, 'elif'} | scan_macros(Ts, Opt)]; scan_form([{'-', _L}, {atom, La, else} | Ts], Opt) -> [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La}, {atom, La, else} | scan_macros(Ts, Opt)]; scan_form([{'-', _L}, {atom, La, endif} | Ts], Opt) -> [{atom, La, ?pp_form}, {'(', La}, {')', La}, {'->', La}, {atom, La, endif} | scan_macros(Ts, Opt)]; +scan_form([{'-', _L}, {atom, La, error} | Ts], _Opt) -> + Desc = build_info_string("-error", Ts), + ErrorInfo = {La, ?MODULE, {error, Desc}}, + erl_syntax:error_marker(ErrorInfo); +scan_form([{'-', _L}, {atom, La, warning} | Ts], _Opt) -> + Desc = build_info_string("-warning", Ts), + ErrorInfo = {La, ?MODULE, {warning, Desc}}, + erl_syntax:error_marker(ErrorInfo); scan_form([{'-', L}, {'?', L1}, {Type, _, _}=N | [{'(', _} | _]=Ts], Opt) when Type =:= atom; Type =:= var -> %% minus, macro and open parenthesis at start of form - assume that @@ -657,6 +680,11 @@ scan_form([{'?', L}, {Type, _, _}=N | [{'(', _} | _]=Ts], Opt) scan_form(Ts, Opt) -> scan_macros(Ts, Opt). +build_info_string(Prefix, Ts0) -> + Ts = lists:droplast(Ts0), + String = lists:droplast(tokens_to_string(Ts)), + Prefix ++ " " ++ String ++ ".". + scan_macros(Ts, Opt) -> scan_macros(Ts, [], Opt). @@ -865,6 +893,10 @@ tokens_to_string([]) -> format_error(macro_args) -> errormsg("macro call missing end parenthesis"); +format_error({error, Error}) -> + Error; +format_error({warning, Error}) -> + Error; format_error({unknown, Reason}) -> errormsg(io_lib:format("unknown error: ~tP", [Reason, 15])). |